首页 > 最新文献

Cellular and Molecular Gastroenterology and Hepatology最新文献

英文 中文
Reduced Intestinal GLP-1+ Cell Numbers Are Associated With an Inflammation-related Epithelial Metabolic Signature 肠道GLP-1+细胞数量的减少与炎症相关的上皮代谢特征有关。
IF 7.1 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2025-10-03 DOI: 10.1016/j.jcmgh.2025.101656
Elisabeth Urbauer , Doriane Aguanno , Katharina Kuellmer , Amira Metwaly , Nadine Waldschmitt , Mohamed Ahmed , Sevana Khaloian , Gabriele Hörmannsperger , Julien Planchais , Tobias Fromme , R. Balfour Sartor , Harry Sokol , Dirk Haller , Eva Rath

Background & Aims

Enteroendocrine cells (EECs) are known for their role in digestion and metabolism, yet their role in intestinal inflammation remains unclear. In inflammatory bowel diseases, a contribution of EECs to pathogenesis is indicated by autoantibodies affecting EEC function and general disease symptoms like insulin resistance and altered intestinal motility. Particularly, the L cell-derived hormone glucagon-like peptide 1 (GLP-1), suggested to orchestrate metabolic-inflammatory responses may influence inflammatory pathways in the intestine.

Methods

We quantified numbers of GLP-1+ cells in 4 different mouse models of intestinal inflammation and performed transcriptional analyses of colonic epithelial cells from inflamed interleukin-10-deficient mice. Using a publicly available single-cell RNA sequencing dataset including mucosal biopsies from patients with Crohn’s disease, we confirmed findings from the murine models. A model of mitochondrial dysfunction (ClpPΔIEC mice) as well as murine and human intestinal organoids were used to study molecular mechanisms.

Results

Numbers of GLP-1 expressing cells are consistently reduced at the site of active disease in mouse models and patients with Crohn’s disease. Despite this reduction, L cells from inflamed interleukin-10-deficient mice remained functional regarding GLP-1 secretion. Transcriptional analyses of intestinal epithelial cells indicate altered differentiation correlating with an inflammatory metabolic fingerprint. Reduced GLP-1+ cells in ClpPΔIEC mice and inhibition of respiration in organoid cultures supports a causative role for metabolism in steering differentiation.

Conclusions

Reduction of GLP-1+ cells represents a general feature of ileal and colonic inflammation in mice and humans. Given the numerous properties of GLP-1, this reduction likely affects inflammatory processes in the mucosa and disease-related symptoms on multiple levels, and therefore, should be considered a therapeutic target in inflammatory bowel diseases.
背景与目的:众所周知,肠内分泌细胞(EECs)在消化和代谢中起着重要作用,但它们在肠道炎症中的作用尚不清楚。在炎症性肠病(IBD)中,通过自身抗体影响EEC功能和一般疾病症状(如胰岛素抵抗和肠蠕动改变)表明EEC对发病机制的贡献。特别是,L细胞衍生的激素胰高血糖素样肽1 (GLP-1),被认为可以协调代谢炎症反应,可能影响肠道的炎症途径。方法:我们量化了4种不同肠道炎症小鼠模型中GLP-1+细胞的数量,并对炎症性白细胞介素(IL)10缺陷小鼠的结肠上皮细胞进行了转录分析。使用公开可用的单细胞RNA测序数据集,包括克罗恩病(CD)患者的粘膜活检,我们证实了小鼠模型的发现。使用线粒体功能障碍模型(ClpPΔIEC小鼠)以及小鼠和人类肠道类器官来研究分子机制。结果:在小鼠模型和CD患者的活动性疾病部位,GLP-1表达细胞的数量持续减少。尽管这种减少,炎性il -10缺陷小鼠的L细胞在GLP-1分泌方面仍保持功能。肠上皮细胞的转录分析表明分化改变与炎症代谢指纹相关。ClpPΔIEC小鼠中GLP-1+细胞的减少和类器官培养中呼吸的抑制支持了代谢在引导分化中的致病作用。结论:GLP-1+细胞减少是小鼠和人回肠和结肠炎症的一个普遍特征。考虑到GLP-1的众多特性,这种减少可能会在多个层面上影响粘膜的炎症过程和疾病相关症状,因此,应将其视为IBD的治疗靶点。
{"title":"Reduced Intestinal GLP-1+ Cell Numbers Are Associated With an Inflammation-related Epithelial Metabolic Signature","authors":"Elisabeth Urbauer ,&nbsp;Doriane Aguanno ,&nbsp;Katharina Kuellmer ,&nbsp;Amira Metwaly ,&nbsp;Nadine Waldschmitt ,&nbsp;Mohamed Ahmed ,&nbsp;Sevana Khaloian ,&nbsp;Gabriele Hörmannsperger ,&nbsp;Julien Planchais ,&nbsp;Tobias Fromme ,&nbsp;R. Balfour Sartor ,&nbsp;Harry Sokol ,&nbsp;Dirk Haller ,&nbsp;Eva Rath","doi":"10.1016/j.jcmgh.2025.101656","DOIUrl":"10.1016/j.jcmgh.2025.101656","url":null,"abstract":"<div><h3>Background &amp; Aims</h3><div>Enteroendocrine cells (EECs) are known for their role in digestion and metabolism, yet their role in intestinal inflammation remains unclear. In inflammatory bowel diseases, a contribution of EECs to pathogenesis is indicated by autoantibodies affecting EEC function and general disease symptoms like insulin resistance and altered intestinal motility. Particularly, the L cell-derived hormone glucagon-like peptide 1 (GLP-1), suggested to orchestrate metabolic-inflammatory responses may influence inflammatory pathways in the intestine.</div></div><div><h3>Methods</h3><div>We quantified numbers of GLP-1<sup>+</sup> cells in 4 different mouse models of intestinal inflammation and performed transcriptional analyses of colonic epithelial cells from inflamed interleukin-10-deficient mice. Using a publicly available single-cell RNA sequencing dataset including mucosal biopsies from patients with Crohn’s disease, we confirmed findings from the murine models. A model of mitochondrial dysfunction (ClpP<sup>ΔIEC</sup> mice) as well as murine and human intestinal organoids were used to study molecular mechanisms.</div></div><div><h3>Results</h3><div>Numbers of GLP-1 expressing cells are consistently reduced at the site of active disease in mouse models and patients with Crohn’s disease. Despite this reduction, L cells from inflamed interleukin-10-deficient mice remained functional regarding GLP-1 secretion. Transcriptional analyses of intestinal epithelial cells indicate altered differentiation correlating with an inflammatory metabolic fingerprint. Reduced GLP-1<sup>+</sup> cells in ClpP<sup>ΔIEC</sup> mice and inhibition of respiration in organoid cultures supports a causative role for metabolism in steering differentiation.</div></div><div><h3>Conclusions</h3><div>Reduction of GLP-1<sup>+</sup> cells represents a general feature of ileal and colonic inflammation in mice and humans. Given the numerous properties of GLP-1, this reduction likely affects inflammatory processes in the mucosa and disease-related symptoms on multiple levels, and therefore, should be considered a therapeutic target in inflammatory bowel diseases.</div></div>","PeriodicalId":55974,"journal":{"name":"Cellular and Molecular Gastroenterology and Hepatology","volume":"20 2","pages":"Article 101656"},"PeriodicalIF":7.1,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145233609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Human-length Telomeres Limit Regeneration of Liver Epithelial Cells in Mice 人类长度的端粒限制小鼠肝上皮细胞再生。
IF 7.1 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2025-09-30 DOI: 10.1016/j.jcmgh.2025.101655
Michael Y. Hu , Melissa Rowe , Mark Tigue , Yitzhak Reizel , Riham Smoom , Yehuda Tzfati , Klaus H. Kaestner

Background & Aims

Telomeres, or the ends of linear chromosomes, are critical for maintaining genomic integrity. The commonly used C57BL/6 mouse strain has telomeres about 5 times longer than those present in humans. We recently engineered the C57BL/6 “Telomouse” to enable the study of human length telomeres, which we used here to study the effects of shortened telomeres on liver regeneration.

Methods

We performed partial hepatectomy experiments with Telomice using wild type C57BL/6 mice as controls. Staggered injections of the thymidine analogs 5-chloro-2'-deoxyuridine (CldU) and 5-iodo-2'-deoxyuridine (IdU) were used to analyze their incorporation into nuclear DNA during cells’ S-phase to assess proliferation. In a second model, we employed a competitive hepatocyte repopulation assay in fumarylacetoacetate hydrolase (Fah) null mice.

Results

We found that human-length telomeres limit the proliferative capacity of cholangiocytes and hepatocytes in short-term liver regeneration. Control mice exhibited significant cholangiocyte proliferation at 36 hours post-partial hepatectomy (PHx), which remained stable at 46 hours post-PHx. In contrast, Telomice exhibited decreased cholangiocyte proliferation at 36 hours post-PHx, which further decreased at 46 hours post-PHx. Both control and Telomice exhibit increased hepatocyte proliferation at 46 hours compared with 36 hours post-PHx. However, Telomice exhibit less proliferation than controls at both time points. Compared with controls, Telomice exhibit an increased DNA damage response in the liver after partial hepatectomy. In a second model, Telomice hepatocytes also exhibited reduced efficacy in a competitive repopulation study using the Fah null mouse model of conditional hepatocyte ablation.

Conclusions

Short telomeres induce DNA damage in the regenerating liver, hampering its ability to accelerate cell proliferation and regenerate the liver.
背景与目的:端粒,或线性染色体的末端,对于维持基因组的完整性至关重要。常用的C57BL/6小鼠菌株的端粒比人类的端粒长约5倍。我们最近设计了C57BL/6“端粒”来研究人类长度的端粒,我们在这里用它来研究缩短的端粒对肝脏再生的影响。方法:以野生型C57BL/6小鼠为对照,采用Telomice进行肝部分切除实验。交叉注射胸腺嘧啶类似物CldU和IdU,分析它们在细胞s期与细胞核DNA的结合情况,以评估增殖情况。在第二个模型中,我们在Fah(富马酰乙酸水解酶)缺失的小鼠中采用竞争性肝细胞再生实验。结果:我们发现人类长度的端粒限制了短期肝再生中胆管细胞和肝细胞的增殖能力。对照组小鼠在phx后36小时表现出显著的胆管细胞增殖,并在phx后46小时保持稳定。相比之下,端粒在phx后36小时表现出胆管细胞增殖下降,并在phx后46小时进一步下降。与phx后36小时相比,对照组和端粒组在46小时时均表现出肝细胞增殖增加。然而,端粒在两个时间点上的增殖都低于对照组。与对照组相比,部分肝切除术后,端粒在肝脏中表现出增加的DNA损伤反应。在第二个模型中,端粒肝细胞在使用Fah null小鼠模型的条件肝细胞消融的竞争性再种群研究中也表现出降低的疗效。结论:短端粒诱导再生肝脏DNA损伤,阻碍其加速细胞增殖和再生肝脏的能力。
{"title":"Human-length Telomeres Limit Regeneration of Liver Epithelial Cells in Mice","authors":"Michael Y. Hu ,&nbsp;Melissa Rowe ,&nbsp;Mark Tigue ,&nbsp;Yitzhak Reizel ,&nbsp;Riham Smoom ,&nbsp;Yehuda Tzfati ,&nbsp;Klaus H. Kaestner","doi":"10.1016/j.jcmgh.2025.101655","DOIUrl":"10.1016/j.jcmgh.2025.101655","url":null,"abstract":"<div><h3>Background &amp; Aims</h3><div>Telomeres, or the ends of linear chromosomes, are critical for maintaining genomic integrity. The commonly used C57BL/6 mouse strain has telomeres about 5 times longer than those present in humans. We recently engineered the C57BL/6 “Telomouse” to enable the study of human length telomeres, which we used here to study the effects of shortened telomeres on liver regeneration.</div></div><div><h3>Methods</h3><div>We performed partial hepatectomy experiments with Telomice using wild type C57BL/6 mice as controls. Staggered injections of the thymidine analogs 5-chloro-2'-deoxyuridine (CldU) and 5-iodo-2'-deoxyuridine (IdU) were used to analyze their incorporation into nuclear DNA during cells’ S-phase to assess proliferation. In a second model, we employed a competitive hepatocyte repopulation assay in fumarylacetoacetate hydrolase (Fah) null mice.</div></div><div><h3>Results</h3><div>We found that human-length telomeres limit the proliferative capacity of cholangiocytes and hepatocytes in short-term liver regeneration. Control mice exhibited significant cholangiocyte proliferation at 36 hours post-partial hepatectomy (PHx), which remained stable at 46 hours post-PHx. In contrast, Telomice exhibited decreased cholangiocyte proliferation at 36 hours post-PHx, which further decreased at 46 hours post-PHx. Both control and Telomice exhibit increased hepatocyte proliferation at 46 hours compared with 36 hours post-PHx. However, Telomice exhibit less proliferation than controls at both time points. Compared with controls, Telomice exhibit an increased DNA damage response in the liver after partial hepatectomy. In a second model, Telomice hepatocytes also exhibited reduced efficacy in a competitive repopulation study using the Fah null mouse model of conditional hepatocyte ablation.</div></div><div><h3>Conclusions</h3><div>Short telomeres induce DNA damage in the regenerating liver, hampering its ability to accelerate cell proliferation and regenerate the liver.</div></div>","PeriodicalId":55974,"journal":{"name":"Cellular and Molecular Gastroenterology and Hepatology","volume":"20 2","pages":"Article 101655"},"PeriodicalIF":7.1,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145214081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Activation and Spatial Redistribution of RNA Splicing Factors Trigger Hepatic Regeneration RNA剪接因子的激活和空间再分配触发肝脏再生。
IF 7.1 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2025-09-29 DOI: 10.1016/j.jcmgh.2025.101654
Yachun An , Jiabei Lian , Wenjing Wei , Yunuo Mao , Longxin Qiao , Tingting Li , Ruijian Li , Shumin Li , Shigang Zhao , Xuena Chen , Han Zhao , Huili Hu

Background & Aims

Tissue injury with regenerative obstacle leads to liver failure and inevitable consequent hepatic diseases. Yet, precise spatial and molecular alterations to initiate liver regeneration remain unknown.

Methods

We employed spatiotemporal sequencing of regenerating liver combined with high-throughput single-cell RNA sequencing of established hepatocyte organoids (Hep-Orgs) mimicking the regenerative start, elucidate that splicing factors (SFs) were key factors responsible for liver regeneration. Additionally, we verify the function of splicing factors in knockout mice models in vivo.

Results

We observed that the upregulation of SFs in regenerative zone of liver and precycling or cycling hepatocytes subpopulation of Hep-Orgs. We demonstrated that the splicing inhibitors suppress liver regeneration by increasing ribosomal proteins. Moreover, we identified HNRNPU as the key SF for liver regeneration benefit to preventing chronic liver diseases like metabolic dysfunction-associated steatotic liver disease.

Conclusions

The spatial remodeling of upregulated RNA SFs drives the first regenerative wave from the periportal zone. The reprogrammed subpopulations defined by highly expressed SFs represent original repopulating hepatocytes. Inhibiting RNA splicing leads to cellular upregulation of ribosomal proteins (RPs), less proliferative signals, and abnormal lipid accumulation. Knockout of SFs leads to failure of liver regeneration and zonal disorder. SF reduction marks severe metabolic dysfunction-associated steatotic liver disease in patients and knockout mouse models. Our results lay the molecular foundation for tissue repair initiation and further developing potential therapeutic targets for liver disease.
背景与目的:组织损伤伴再生障碍导致肝功能衰竭和不可避免的肝脏疾病。然而,启动肝脏再生的精确空间和分子改变仍然未知。方法:采用再生肝脏的时空测序结合高通量单细胞RNA测序,对已建立的模拟再生开始的肝细胞类器官(Hep-Orgs)进行测序,阐明剪接因子(SFs)是肝脏再生的关键因素。此外,我们在敲除小鼠体内模型中验证了剪接因子的功能。结果:我们观察到肝脏再生区和Hep-Orgs的预循环或循环肝细胞亚群中SFs的上调。我们证明剪接抑制剂通过增加核糖体蛋白来抑制肝脏再生。此外,我们发现Hnrnpu是肝再生的关键SF,可以预防慢性肝脏疾病,如代谢功能障碍相关的脂肪变性肝病(MASLD)。结论:上调RNA剪接因子的空间重塑驱动第一个再生波来自门静脉周围区。由高表达的SFs定义的重编程亚群代表原始的重新填充的肝细胞。抑制RNA剪接导致细胞核糖体蛋白(RPs)上调,增殖信号减少和异常脂质积累。敲除SFs导致肝脏再生失败和区域性疾病。SF减少标志着患者和敲除小鼠模型严重的MASLD。我们的研究结果为肝脏疾病组织修复启动和进一步开发潜在治疗靶点奠定了分子基础。
{"title":"Activation and Spatial Redistribution of RNA Splicing Factors Trigger Hepatic Regeneration","authors":"Yachun An ,&nbsp;Jiabei Lian ,&nbsp;Wenjing Wei ,&nbsp;Yunuo Mao ,&nbsp;Longxin Qiao ,&nbsp;Tingting Li ,&nbsp;Ruijian Li ,&nbsp;Shumin Li ,&nbsp;Shigang Zhao ,&nbsp;Xuena Chen ,&nbsp;Han Zhao ,&nbsp;Huili Hu","doi":"10.1016/j.jcmgh.2025.101654","DOIUrl":"10.1016/j.jcmgh.2025.101654","url":null,"abstract":"<div><h3>Background &amp; Aims</h3><div>Tissue injury with regenerative obstacle leads to liver failure and inevitable consequent hepatic diseases. Yet, precise spatial and molecular alterations to initiate liver regeneration remain unknown.</div></div><div><h3>Methods</h3><div>We employed spatiotemporal sequencing of regenerating liver combined with high-throughput single-cell RNA sequencing of established hepatocyte organoids (Hep-Orgs) mimicking the regenerative start, elucidate that splicing factors (SFs) were key factors responsible for liver regeneration. Additionally, we verify the function of splicing factors in knockout mice models in vivo.</div></div><div><h3>Results</h3><div>We observed that the upregulation of SFs in regenerative zone of liver and precycling or cycling hepatocytes subpopulation of Hep-Orgs. We demonstrated that the splicing inhibitors suppress liver regeneration by increasing ribosomal proteins. Moreover, we identified HNRNPU as the key SF for liver regeneration benefit to preventing chronic liver diseases like metabolic dysfunction-associated steatotic liver disease.</div></div><div><h3>Conclusions</h3><div>The spatial remodeling of upregulated RNA SFs drives the first regenerative wave from the periportal zone. The reprogrammed subpopulations defined by highly expressed SFs represent original repopulating hepatocytes. Inhibiting RNA splicing leads to cellular upregulation of ribosomal proteins (RPs), less proliferative signals, and abnormal lipid accumulation. Knockout of SFs leads to failure of liver regeneration and zonal disorder. SF reduction marks severe metabolic dysfunction-associated steatotic liver disease in patients and knockout mouse models. Our results lay the molecular foundation for tissue repair initiation and further developing potential therapeutic targets for liver disease.</div></div>","PeriodicalId":55974,"journal":{"name":"Cellular and Molecular Gastroenterology and Hepatology","volume":"20 2","pages":"Article 101654"},"PeriodicalIF":7.1,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145208176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Long Noncoding RNA uc173 is a Novel Regulator of Mitochondrial Metabolism Driving Intestinal Mucosal Growth 长链非编码RNA uc173是一种新的线粒体代谢调节因子,驱动肠粘膜生长。
IF 7.1 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2025-09-29 DOI: 10.1016/j.jcmgh.2025.101653
Lan Xiao , Song Ah Chae , Dongyoon Yoo , Hee K. Chung , Min S. Kwon , Amy VanderStoep , Ting-Xi Yu , Bridgette Warner , Myriam Gorospe , Jian-Ying Wang

Background & Aims

Long noncoding RNA uc.173, transcribed from ultraconserved regions, modulates many cell processes central to human pathologies, but the mechanism underlying uc.173 in the homeostasis of the intestinal epithelium is underexplored. Here, we investigated the role of uc.173 in regulating mitochondrial metabolism and defined the implication of altered mitochondrial activity by uc.173 in renewal of the intestinal mucosa.

Methods

Studies were conducted in CRISPR-Cas9 knock-in mice, primary enterocytes, and Caco-2 cells. Mitochondrial structure and function were elucidated by measuring mitochondria-associated proteins and mitochondrial respiratory capacity. Intestinal mucosal growth was measured by Ki67 immunostaining or BrdU incorporation assays.

Results

Transient and specific deletion of uc.173 in the intestinal epithelium of mice by CRISPR-Cas9 knock-in using small guide RNA decreased the levels of several mitochondria-associated proteins including PGC-1α, along with disrupted mucosal growth. Decreasing the levels of uc.173 in cultured intestinal epithelial cells also decreased mitochondrial proteins and caused defects in the mitochondrial respiratory capacity. Reinforcing mitochondrial activity by using a mitochondrial activator or by overexpressing PGC-1α rescued growth of uc.173-deficient intestinal organoids. Mechanistic studies revealed that uc.173 increased PGC-1α expression by acting as a molecular decoy for miR-29b, thereby preventing the repressive interaction of miR-29b with PGC-1α mRNA.

Conclusions

These findings indicate that uc.173 is a novel regulator of mitochondrial metabolism in the intestinal epithelium and highlight a role of deregulation of uc.173, miR-29b, and PGC-1α in the suppressed renewal of intestinal mucosa in patients with critical illnesses.
背景与目的:长链非编码RNA。173从超保守区域转录,调节许多对人类病理至关重要的细胞过程,但uc的潜在机制。173在肠上皮内稳态中的作用尚不清楚。在这里,我们研究了uc的作用。173在调节线粒体代谢中的作用,并定义了uc改变线粒体活性的意义。173在肠粘膜的更新。方法:在CRISPR-Cas9敲入小鼠、原代肠细胞和Caco-2细胞中进行研究。通过测定线粒体相关蛋白和线粒体呼吸能力来阐明线粒体结构和功能。采用Ki67免疫染色法或BrdU掺入法测定肠黏膜生长。结果:uc的瞬时特异性缺失。使用小向导RNA通过CRISPR-Cas9敲入小鼠肠上皮中的173,降低了包括PGC-1α在内的几种线粒体相关蛋白的水平,同时破坏了粘膜生长。降低uc的水平。173在培养的肠上皮细胞中也降低了线粒体蛋白,导致线粒体呼吸能力缺陷。通过使用线粒体激活剂或过表达PGC-1α来增强线粒体活性可挽救uc的生长。173缺乏肠道类器官。机理研究表明,uc。173通过作为miR-29b的分子诱饵增加PGC-1α的表达,从而阻止miR-29b与PGC-1α mRNA的抑制性相互作用。结论:这些发现提示uc。173是一种新的肠上皮线粒体代谢调节因子,并在uc的解除管制中发挥重要作用。173、miR-29b和PGC-1α在危重症患者肠黏膜更新抑制中的作用。
{"title":"Long Noncoding RNA uc173 is a Novel Regulator of Mitochondrial Metabolism Driving Intestinal Mucosal Growth","authors":"Lan Xiao ,&nbsp;Song Ah Chae ,&nbsp;Dongyoon Yoo ,&nbsp;Hee K. Chung ,&nbsp;Min S. Kwon ,&nbsp;Amy VanderStoep ,&nbsp;Ting-Xi Yu ,&nbsp;Bridgette Warner ,&nbsp;Myriam Gorospe ,&nbsp;Jian-Ying Wang","doi":"10.1016/j.jcmgh.2025.101653","DOIUrl":"10.1016/j.jcmgh.2025.101653","url":null,"abstract":"<div><h3>Background &amp; Aims</h3><div>Long noncoding RNA <em>uc.173</em>, transcribed from ultraconserved regions, modulates many cell processes central to human pathologies, but the mechanism underlying <em>uc.173</em> in the homeostasis of the intestinal epithelium is underexplored. Here, we investigated the role of <em>uc.173</em> in regulating mitochondrial metabolism and defined the implication of altered mitochondrial activity by <em>uc.173</em> in renewal of the intestinal mucosa.</div></div><div><h3>Methods</h3><div>Studies were conducted in CRISPR-Cas9 knock-in mice, primary enterocytes, and Caco-2 cells. Mitochondrial structure and function were elucidated by measuring mitochondria-associated proteins and mitochondrial respiratory capacity. Intestinal mucosal growth was measured by Ki67 immunostaining or BrdU incorporation assays.</div></div><div><h3>Results</h3><div>Transient and specific deletion of <em>uc.173</em> in the intestinal epithelium of mice by CRISPR-Cas9 knock-in using small guide RNA decreased the levels of several mitochondria-associated proteins including PGC-1α, along with disrupted mucosal growth. Decreasing the levels of <em>uc.173</em> in cultured intestinal epithelial cells also decreased mitochondrial proteins and caused defects in the mitochondrial respiratory capacity. Reinforcing mitochondrial activity by using a mitochondrial activator or by overexpressing PGC-1α rescued growth of <em>uc.173</em>-deficient intestinal organoids. Mechanistic studies revealed that <em>uc.173</em> increased PGC-1α expression by acting as a molecular decoy for miR-29b, thereby preventing the repressive interaction of miR-29b with <em>PGC-1α</em> mRNA.</div></div><div><h3>Conclusions</h3><div>These findings indicate that <em>uc.173</em> is a novel regulator of mitochondrial metabolism in the intestinal epithelium and highlight a role of deregulation of <em>uc.173</em>, miR-29b, and PGC-1α in the suppressed renewal of intestinal mucosa in patients with critical illnesses.</div></div>","PeriodicalId":55974,"journal":{"name":"Cellular and Molecular Gastroenterology and Hepatology","volume":"20 2","pages":"Article 101653"},"PeriodicalIF":7.1,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145208284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
HIF-2α-driven Lipogenesis and Inflammation in Metabolic Dysfunction-associated Steatotic Liver Disease: Role of ATF4 Signaling hif -2α驱动的脂肪生成和MASLD中的炎症:ATF4信号的作用。
IF 7.1 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2025-09-29 DOI: 10.1016/j.jcmgh.2025.101651
Zhe Yang , Niujian Wu , Xin Li , Yun Li , Zhanjin Lu , Taoping Sun , Zhixing Cao , Xianghong Wang , Chen Yang , Shisong Han , Hongyun Lu

Background & Aims

Metabolic dysfunction-associated steatotic liver disease (MASLD) is characterized by an imbalance of lipid metabolism and chronic inflammation. Emerging evidence suggests a role for hypoxia-inducible factor 2α (HIF-2α) in MASLD progression. However, the mechanistic linkage between HIF-2α and steatohepatitis progression remains largely elusive.

Methods

Here, hepatocyte-specific HIF-2α knockout mice were used to investigate the pathophysiological role of HIF-2α in MASLD. Multiple gain- and loss-of-function experiments in primary hepatocytes and established human hepatocyte cell lines were performed to elucidate the molecular mechanisms by which HIF-2α contributes to MASLD progression.

Results

Compared with their wild-type littermates, hepatocyte-specific HIF-2α knockout mice exhibited a substantial reduction in high-fat diet-induced hepatic steatosis and inflammatory signaling. Furthermore, HIF-2ɑ deficiency in primary hepatocytes and both L02 and MIHA cell lines markedly inhibited the lipid accumulation, inflammation, and endoplasmic reticulum stress in vitro upon free fatty acids challenge. Mechanistically, HIF-2 directly bound to the promoter region of protein kinase RNA-like ER kinase, leading to the activation of the activating transcription factor 4 signaling under metabolic stress, thereby aggravating lipogenesis while inhibiting lipid oxidation in hepatocytes.

Conclusions

These data indicate that HIF-2α acts as a contributing factor to MASLD progression via activating transcription factor 4 signaling.
背景与目的:代谢功能障碍相关的脂肪变性肝病(MASLD)以脂质代谢失衡和慢性炎症为特征。新出现的证据表明缺氧诱导因子2α (HIF-2α)在MASLD进展中的作用。然而,HIF-2α与脂肪性肝炎进展之间的机制联系在很大程度上仍然难以捉摸。方法:采用肝细胞特异性HIF-2α敲除小鼠,研究HIF-2α在MASLD中的病理生理作用。在原代肝细胞和已建立的人肝细胞系中进行了多次功能增益和功能丧失实验,以阐明HIF-2α促进MASLD进展的分子机制。结果:与野生型小鼠相比,肝细胞特异性HIF-2α敲除小鼠表现出hfd诱导的肝脏脂肪变性和炎症信号的显著减少。此外,原代肝细胞、L02和MIHA细胞系的HIF-2缺乏显著抑制体外FFAs攻击下的脂质积累、炎症和内质网应激。在机制上,HIF-2直接结合到蛋白激酶rna样ER激酶(PERK)的启动子区域,导致代谢应激下激活激活转录因子4 (ATF4)信号,从而在抑制肝细胞脂质氧化的同时加剧脂肪生成。结论:这些数据表明HIF-2α通过ATF4信号通路促进了MASLD的进展。
{"title":"HIF-2α-driven Lipogenesis and Inflammation in Metabolic Dysfunction-associated Steatotic Liver Disease: Role of ATF4 Signaling","authors":"Zhe Yang ,&nbsp;Niujian Wu ,&nbsp;Xin Li ,&nbsp;Yun Li ,&nbsp;Zhanjin Lu ,&nbsp;Taoping Sun ,&nbsp;Zhixing Cao ,&nbsp;Xianghong Wang ,&nbsp;Chen Yang ,&nbsp;Shisong Han ,&nbsp;Hongyun Lu","doi":"10.1016/j.jcmgh.2025.101651","DOIUrl":"10.1016/j.jcmgh.2025.101651","url":null,"abstract":"<div><h3>Background &amp; Aims</h3><div>Metabolic dysfunction-associated steatotic liver disease (MASLD) is characterized by an imbalance of lipid metabolism and chronic inflammation. Emerging evidence suggests a role for hypoxia-inducible factor 2α (HIF-2α) in MASLD progression. However, the mechanistic linkage between HIF-2α and steatohepatitis progression remains largely elusive.</div></div><div><h3>Methods</h3><div>Here, hepatocyte-specific HIF-2α knockout mice were used to investigate the pathophysiological role of HIF-2α in MASLD. Multiple gain- and loss-of-function experiments in primary hepatocytes and established human hepatocyte cell lines were performed to elucidate the molecular mechanisms by which HIF-2α contributes to MASLD progression.</div></div><div><h3>Results</h3><div>Compared with their wild-type littermates, hepatocyte-specific HIF-2α knockout mice exhibited a substantial reduction in high-fat diet-induced hepatic steatosis and inflammatory signaling. Furthermore, HIF-2ɑ deficiency in primary hepatocytes and both L02 and MIHA cell lines markedly inhibited the lipid accumulation, inflammation, and endoplasmic reticulum stress in vitro upon free fatty acids challenge. Mechanistically, HIF-2 directly bound to the promoter region of protein kinase RNA-like ER kinase, leading to the activation of the activating transcription factor 4 signaling under metabolic stress, thereby aggravating lipogenesis while inhibiting lipid oxidation in hepatocytes.</div></div><div><h3>Conclusions</h3><div>These data indicate that HIF-2α acts as a contributing factor to MASLD progression via activating transcription factor 4 signaling.</div></div>","PeriodicalId":55974,"journal":{"name":"Cellular and Molecular Gastroenterology and Hepatology","volume":"20 2","pages":"Article 101651"},"PeriodicalIF":7.1,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145208189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
How First Foods Promote Intestinal Epithelial Maturation: Lessons Learned From Suckling Rabbits 初食如何促进肠上皮细胞成熟:从乳兔身上得到的经验教训。
IF 7.1 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2025-09-29 DOI: 10.1016/j.jcmgh.2025.101649
Vanesa Muncan
{"title":"How First Foods Promote Intestinal Epithelial Maturation: Lessons Learned From Suckling Rabbits","authors":"Vanesa Muncan","doi":"10.1016/j.jcmgh.2025.101649","DOIUrl":"10.1016/j.jcmgh.2025.101649","url":null,"abstract":"","PeriodicalId":55974,"journal":{"name":"Cellular and Molecular Gastroenterology and Hepatology","volume":"20 1","pages":"Article 101649"},"PeriodicalIF":7.1,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145208313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Etomidate Improves Antitumor Immunity by Suppressing PD-L1 Expression in Hepatocellular Carcinoma Cells 依托咪酯通过抑制肝癌细胞中PD-L1的表达来提高抗肿瘤免疫。
IF 7.1 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2025-09-29 DOI: 10.1016/j.jcmgh.2025.101652
Jiali Xu , Qing Ji , Yining Chen , Yu Xu , Zhihui Wang , Zhenyu Yuan , Dapeng Gao , Lidong Zhang , Cunming Liu , Qing Li , Liren Zhang , Jingjing Dai

Background & Aims

Etomidate, a prevalent intravenous anesthetic agent, has been implicated in the attenuation of tumorigenesis. Our recent investigations elucidated its capacity to impede the malignant progression of hepatocellular carcinoma (HCC). This study aims to elucidate how etomidate modulates the immunosuppressive tumor microenvironment in HCC.

Methods

To investigate the multifaceted effects and underlying molecular mechanisms of etomidate, we employed an integrative approach encompassing in vitro and in vivo systems, including patient-derived HCC organoids, 3-dimensional co-culture platforms, patient-derived xenografts, and orthotopic HCC models. A suite of advanced methodologies such as single-cell cytometry by time-of-flight (CyTOF), multiplex immunohistochemistry, and flow cytometric analyses were applied.

Results

Our data reveal that etomidate suppresses programmed death-ligand 1 (PD-L1) expression in HCC cells, thereby potentiating antitumor immunity. Mechanistically, etomidate inhibits the Janus kinase 2/signal transducer and activator of transcription 3 axis in tumor cells, leading to reduced PD-L1 transcription and increased infiltration and activation of cytotoxic CD8+ T lymphocytes.

Conclusions

These findings support the hypothesis that etomidate enhances antitumor immunity and boosts the therapeutic efficacy of immune checkpoint blockade, thereby laying a theoretical foundation for precision immunotherapy in HCC.
背景与目的:依托咪酯是一种常用的静脉麻醉药,与肿瘤发生的衰减有关。我们最近的研究阐明了其阻碍肝细胞癌(HCC)恶性进展的能力。本研究旨在阐明依托咪酯如何调节HCC中免疫抑制的肿瘤微环境。方法:为了研究依托咪酯的多方面作用和潜在的分子机制,我们采用了一种包括体外和体内系统的综合方法,包括患者来源的肝细胞癌类器官、三维共培养平台、患者来源的异种移植物和原位肝细胞癌模型。一套先进的方法,如单细胞细胞术飞行时间(CyTOF),多重免疫组织化学和流式细胞术分析应用。结果:我们的数据显示依托咪酯抑制HCC细胞中PD-L1的表达,从而增强抗肿瘤免疫。在机制上,依托咪酯抑制肿瘤细胞的JAK2/STAT3轴,导致PD-L1转录减少,细胞毒性CD8+ T淋巴细胞浸润和活化增加。结论:本研究结果支持依托咪酯增强抗肿瘤免疫,提高免疫检查点阻断治疗效果的假说,为HCC的精准免疫治疗奠定理论基础。
{"title":"Etomidate Improves Antitumor Immunity by Suppressing PD-L1 Expression in Hepatocellular Carcinoma Cells","authors":"Jiali Xu ,&nbsp;Qing Ji ,&nbsp;Yining Chen ,&nbsp;Yu Xu ,&nbsp;Zhihui Wang ,&nbsp;Zhenyu Yuan ,&nbsp;Dapeng Gao ,&nbsp;Lidong Zhang ,&nbsp;Cunming Liu ,&nbsp;Qing Li ,&nbsp;Liren Zhang ,&nbsp;Jingjing Dai","doi":"10.1016/j.jcmgh.2025.101652","DOIUrl":"10.1016/j.jcmgh.2025.101652","url":null,"abstract":"<div><h3>Background &amp; Aims</h3><div>Etomidate, a prevalent intravenous anesthetic agent, has been implicated in the attenuation of tumorigenesis. Our recent investigations elucidated its capacity to impede the malignant progression of hepatocellular carcinoma (HCC). This study aims to elucidate how etomidate modulates the immunosuppressive tumor microenvironment in HCC.</div></div><div><h3>Methods</h3><div>To investigate the multifaceted effects and underlying molecular mechanisms of etomidate, we employed an integrative approach encompassing in vitro and in vivo systems, including patient-derived HCC organoids, 3-dimensional co-culture platforms, patient-derived xenografts, and orthotopic HCC models. A suite of advanced methodologies such as single-cell cytometry by time-of-flight (CyTOF), multiplex immunohistochemistry, and flow cytometric analyses were applied.</div></div><div><h3>Results</h3><div>Our data reveal that etomidate suppresses programmed death-ligand 1 (PD-L1) expression in HCC cells, thereby potentiating antitumor immunity. Mechanistically, etomidate inhibits the Janus kinase 2/signal transducer and activator of transcription 3 axis in tumor cells, leading to reduced <em>PD-L1</em> transcription and increased infiltration and activation of cytotoxic CD8<sup>+</sup> T lymphocytes.</div></div><div><h3>Conclusions</h3><div>These findings support the hypothesis that etomidate enhances antitumor immunity and boosts the therapeutic efficacy of immune checkpoint blockade, thereby laying a theoretical foundation for precision immunotherapy in HCC.</div></div>","PeriodicalId":55974,"journal":{"name":"Cellular and Molecular Gastroenterology and Hepatology","volume":"20 2","pages":"Article 101652"},"PeriodicalIF":7.1,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145208196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anesthetic Agents as Modulators of Antitumor Immunity: Repurposing Etomidate for Hepatocellular Carcinoma Therapy. 麻醉药物作为抗肿瘤免疫的调节剂:依托咪酯用于肝细胞癌治疗。
IF 7.1 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2025-09-29 DOI: 10.1016/j.jcmgh.2025.101650
Hanchao Lin, Qiongzhu Dong
{"title":"Anesthetic Agents as Modulators of Antitumor Immunity: Repurposing Etomidate for Hepatocellular Carcinoma Therapy.","authors":"Hanchao Lin, Qiongzhu Dong","doi":"10.1016/j.jcmgh.2025.101650","DOIUrl":"10.1016/j.jcmgh.2025.101650","url":null,"abstract":"","PeriodicalId":55974,"journal":{"name":"Cellular and Molecular Gastroenterology and Hepatology","volume":" ","pages":"101650"},"PeriodicalIF":7.1,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145208129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cell Adhesion Molecule 1 Emerges as a Biomarker and Therapeutic Opportunity in Inflammatory Bowel Disease CADM1成为炎症性肠病的生物标志物和治疗机会
IF 7.1 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2025-09-26 DOI: 10.1016/j.jcmgh.2025.101648
Randy S. Longman
{"title":"Cell Adhesion Molecule 1 Emerges as a Biomarker and Therapeutic Opportunity in Inflammatory Bowel Disease","authors":"Randy S. Longman","doi":"10.1016/j.jcmgh.2025.101648","DOIUrl":"10.1016/j.jcmgh.2025.101648","url":null,"abstract":"","PeriodicalId":55974,"journal":{"name":"Cellular and Molecular Gastroenterology and Hepatology","volume":"20 1","pages":"Article 101648"},"PeriodicalIF":7.1,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145187593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
R-Spondin1 Regulates Fate of Enteric Neural Progenitors via Differential LGR4/5/6 Expression in Mice and Humans R-Spondin1通过lgr4 /5/6在小鼠和人中的差异表达调控肠神经祖细胞的命运。
IF 7.1 1区 医学 Q1 GASTROENTEROLOGY & HEPATOLOGY Pub Date : 2025-09-24 DOI: 10.1016/j.jcmgh.2025.101642
Melanie Scharr , Simon Scherer , Jörg Fuchs , Bernhard Hirt , Peter H. Neckel

Background & Aims

Regeneration and cytodifferentiation of various adult epithelial stem cell compartments are controlled by the WNT agonist R-Spondin1 (RSPO1) and the Leucin-rich-repeat-containing G-protein-coupled receptors (LGR4/5/6). We hypothesized that RSPO1-LGR signaling is also involved in regulating neuroregeneration and homeostasis of the postnatal enteric nervous system (ENS).

Methods

We isolated neural crest-derived ENS cells from wnt1-tomato mice and patient samples, which were evaluated using pharmacological in vitro studies under RSPO1 stimulation. We use proliferation assays (BrdU incorporation, Ki67 staining), as well as neuronal differentiation screenings. We performed fluorescence-activated cell sorting-based in vitro assays to stratify human ENS cells for LGR receptor expression, and to characterize them by immunofluorescence colabeling studies in vivo.

Results

If applied to murine and human ENS progenitors, RSPO1 led to an increased proliferation (P = .002), followed by enhanced enteric neurogenesis (P < .001). This coincided with an upregulation of LGR4 expression during ENS progenitor proliferation (P ≤ .001) in vitro. In contrast, we observed a reduced proliferation in ENS progenitors expressing LGR5 (P ≤ .001), whereas LGR6 was not expressed by proliferative ENS progenitors (P ≤ .05). Instead, LGR5 and LGR6 expression increased over the course of induced neuronal differentiation (LGR5: P ≤ .001 and LGR6: P ≤ .05), consistent with the in vivo expression.

Conclusions

LGR receptor expression therefore might represent a previously unknown mechanism influencing the fate decision of ENS progenitor cells between proliferation and neuronal differentiation. Thus, our study is essential for our understanding of regenerative aspects of the postnatal ENS in health and disease.
背景与目的:各种成体上皮干细胞区室的再生和细胞分化受wnt激动剂R-Spondin1 (RSPO1)和富含亮素的含重复g蛋白偶联受体(LGR4/5/6)的调控。我们假设rspo1 - lgr信号也参与调节出生后肠神经系统(ENS)的神经再生和体内平衡。方法:我们从wnt1-番茄小鼠和患者样本中分离神经嵴源性ens细胞,在RSPO1刺激下进行体外药理学研究。我们使用增殖试验(brdu掺入,ki67染色),以及神经元分化筛选。我们进行了基于facs的体外实验,对人ens细胞进行分层,分析lgr受体的表达,并在体内通过免疫荧光共标记研究对其进行表征。结果:如果将RSPO1应用于小鼠和人类ens -祖细胞,RSPO1导致增殖增加(P= 0.002),随后肠内神经发生增强(P结论:因此lgr受体表达可能代表了一种以前未知的机制,影响ens -祖细胞在增殖和神经元分化之间的命运决定。因此,我们的研究对于我们理解出生后ENS在健康和疾病方面的再生方面至关重要。
{"title":"R-Spondin1 Regulates Fate of Enteric Neural Progenitors via Differential LGR4/5/6 Expression in Mice and Humans","authors":"Melanie Scharr ,&nbsp;Simon Scherer ,&nbsp;Jörg Fuchs ,&nbsp;Bernhard Hirt ,&nbsp;Peter H. Neckel","doi":"10.1016/j.jcmgh.2025.101642","DOIUrl":"10.1016/j.jcmgh.2025.101642","url":null,"abstract":"<div><h3>Background &amp; Aims</h3><div>Regeneration and cytodifferentiation of various adult epithelial stem cell compartments are controlled by the WNT agonist R-Spondin1 (RSPO1) and the Leucin-rich-repeat-containing G-protein-coupled receptors (LGR4/5/6). We hypothesized that RSPO1-LGR signaling is also involved in regulating neuroregeneration and homeostasis of the postnatal enteric nervous system (ENS).</div></div><div><h3>Methods</h3><div>We isolated neural crest-derived ENS cells from wnt1-tomato mice and patient samples, which were evaluated using pharmacological in vitro studies under RSPO1 stimulation. We use proliferation assays (BrdU incorporation, Ki67 staining), as well as neuronal differentiation screenings. We performed fluorescence-activated cell sorting-based in vitro assays to stratify human ENS cells for LGR receptor expression, and to characterize them by immunofluorescence colabeling studies in vivo.</div></div><div><h3>Results</h3><div>If applied to murine and human ENS progenitors, RSPO1 led to an increased proliferation (<em>P</em> = .002), followed by enhanced enteric neurogenesis (<em>P</em> &lt; .001). This coincided with an upregulation of LGR4 expression during ENS progenitor proliferation (<em>P ≤</em> .001) in vitro. In contrast, we observed a reduced proliferation in ENS progenitors expressing LGR5 (<em>P</em> ≤ .001), whereas LGR6 was not expressed by proliferative ENS progenitors (<em>P</em> ≤ .05). Instead, LGR5 and LGR6 expression increased over the course of induced neuronal differentiation (LGR5: <em>P</em> ≤ .001 and LGR6: <em>P</em> ≤ .05), consistent with the in vivo expression.</div></div><div><h3>Conclusions</h3><div>LGR receptor expression therefore might represent a previously unknown mechanism influencing the fate decision of ENS progenitor cells between proliferation and neuronal differentiation. Thus, our study is essential for our understanding of regenerative aspects of the postnatal ENS in health and disease.</div></div>","PeriodicalId":55974,"journal":{"name":"Cellular and Molecular Gastroenterology and Hepatology","volume":"20 2","pages":"Article 101642"},"PeriodicalIF":7.1,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145152129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Cellular and Molecular Gastroenterology and Hepatology
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1