Pub Date : 2025-12-01DOI: 10.1016/j.apsb.2025.10.017
Kaiyi Wang , Xinhai Chen , Nan Li , Huimin Feng , Xiaoyi Liu , Yifei Wang , Yanfei Wu , Yufeng Guo , Shuoshuo Xu , Lu Yao , Zhaohua Zhang , Jun Jia , Zhishu Tang , Zhisheng Wu
{"title":"Author correction to “AI-integrated IQPD framework of quality prediction and diagnostics in small-sample multi-unit pharmaceutical manufacturing: advancing from experience-driven to data-driven manufacturing” [Acta Pharm Sin B 15 (2025) 4193–4209]","authors":"Kaiyi Wang , Xinhai Chen , Nan Li , Huimin Feng , Xiaoyi Liu , Yifei Wang , Yanfei Wu , Yufeng Guo , Shuoshuo Xu , Lu Yao , Zhaohua Zhang , Jun Jia , Zhishu Tang , Zhisheng Wu","doi":"10.1016/j.apsb.2025.10.017","DOIUrl":"10.1016/j.apsb.2025.10.017","url":null,"abstract":"","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":"15 12","pages":"Pages 6743-6744"},"PeriodicalIF":14.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145736082","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}
Pub Date : 2025-12-01DOI: 10.1016/j.apsb.2025.09.012
Xiaoguo Suo , Qinglin Ge , Lijin Peng , Qi Zhu , Mengmeng Zhang , Xinran Cheng , Fang Wang , Juan Jin , Jianan Wang , Xiaoming Meng
Chronic kidney disease (CKD) has emerged as a formidable global health challenge, with a marked increase in its incidence, prevalence, and mortality rates. Renal fibrosis is a central pathophysiological process that drives the progression of CKD to end-stage renal disease. Despite its crucial role in CKD progression, effective clinical interventions to delay or mitigate renal fibrosis remain limited. A deeper understanding of the molecular mechanisms underlying renal fibrosis, along with the identification of potential drug targets and the development of novel therapeutics, holds immense research significance and clinical value for the prevention and treatment of CKD. In recent years, epigenetic research has garnered widespread attention and plays a pivotal role in various disease processes. Against this backdrop, the mechanisms by which epigenetic modifications exert their effects on renal fibrosis are gradually being elucidated, offering novel insights into the understanding of CKD. In this review, we summarize and analyze the intricate regulatory network of epigenetic modifications in renal fibrosis. We explore the promising antifibrotic effects demonstrated by various epigenetically modified drugs in fibrotic kidney models and discuss the challenges and opportunities in current research. These findings provide crucial insights for a deeper understanding of the molecular mechanisms underlying renal fibrosis and the development of novel therapeutic approaches.
{"title":"Emerging epigenetic modifications in renal fibrosis: From mechanisms to treatments","authors":"Xiaoguo Suo , Qinglin Ge , Lijin Peng , Qi Zhu , Mengmeng Zhang , Xinran Cheng , Fang Wang , Juan Jin , Jianan Wang , Xiaoming Meng","doi":"10.1016/j.apsb.2025.09.012","DOIUrl":"10.1016/j.apsb.2025.09.012","url":null,"abstract":"<div><div>Chronic kidney disease (CKD) has emerged as a formidable global health challenge, with a marked increase in its incidence, prevalence, and mortality rates. Renal fibrosis is a central pathophysiological process that drives the progression of CKD to end-stage renal disease. Despite its crucial role in CKD progression, effective clinical interventions to delay or mitigate renal fibrosis remain limited. A deeper understanding of the molecular mechanisms underlying renal fibrosis, along with the identification of potential drug targets and the development of novel therapeutics, holds immense research significance and clinical value for the prevention and treatment of CKD. In recent years, epigenetic research has garnered widespread attention and plays a pivotal role in various disease processes. Against this backdrop, the mechanisms by which epigenetic modifications exert their effects on renal fibrosis are gradually being elucidated, offering novel insights into the understanding of CKD. In this review, we summarize and analyze the intricate regulatory network of epigenetic modifications in renal fibrosis. We explore the promising antifibrotic effects demonstrated by various epigenetically modified drugs in fibrotic kidney models and discuss the challenges and opportunities in current research. These findings provide crucial insights for a deeper understanding of the molecular mechanisms underlying renal fibrosis and the development of novel therapeutic approaches.</div></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":"15 12","pages":"Pages 6141-6162"},"PeriodicalIF":14.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145736085","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}
Pub Date : 2025-12-01DOI: 10.1016/j.apsb.2025.08.017
Ranran Yuan , Zhen Mu , Houqian Zhang , Yu Tian , Quanlin Xin , Qingchao Tu , Yan Zhang , Yanqiu Li , Zhiwen Zhang , Yongchao Chu , Aiping Wang , Jingwei Tian , Hongbo Wang , Chong Qiu , Yanan Shi
Idiopathic pulmonary fibrosis (IPF) is a complex interstitial lung disease in which myofibroblasts are the primary effector cells. FK506-binding protein (FKBP10), a procollagen chaperone, is upregulated in IPF and primarily localizes to myofibroblasts. Exosomes have garnered significant attention as novel drug delivery vehicles, particularly when engineered. However, myofibroblasts remain underexplored in terms of engineered exosome-based therapies and associated drug targets. In this study, RDYH58, a peptide that targets myofibroblasts, was conjugated to the exosomal membrane protein Lamp2b to produce RDYH58-linked exosomes (RDYH58-exo). In vitro and in vivo experiments demonstrated that compared to unmodified exosomes (unm-exo), RDYH58-exo preferentially localized to myofibroblasts. A small interfering RNA targeting FKBP10 (siFKBP10) was loaded into exosomes using ultrasonic microfluidics method, and the antifibrotic effects of RDYH58-exo carrying siFKBP10 (RDYH58-siFKBP10) were assessed both in vitro and in vivo. The results demonstrated that RDYH58-siFKBP10 effectively silenced FKBP10 gene expression, significantly inhibiting fibroblast activation and extracellular matrix deposition, with superior antifibrotic efficacy compared to unmodified exosome vectors (unm-siFKBP10). RNA-seq analysis confirmed the pivotal regulatory role of FKBP10, providing critical evidence for the development of targeted therapeutic strategies. The RDYH58-siFKBP10 delivery system developed in this study demonstrates remarkable clinical translation potential.
{"title":"RDYH58 functional exosomes targeting myofibroblasts loaded with siFKBP10 for inhibition of collagen biosynthesis and secretion of IPF","authors":"Ranran Yuan , Zhen Mu , Houqian Zhang , Yu Tian , Quanlin Xin , Qingchao Tu , Yan Zhang , Yanqiu Li , Zhiwen Zhang , Yongchao Chu , Aiping Wang , Jingwei Tian , Hongbo Wang , Chong Qiu , Yanan Shi","doi":"10.1016/j.apsb.2025.08.017","DOIUrl":"10.1016/j.apsb.2025.08.017","url":null,"abstract":"<div><div>Idiopathic pulmonary fibrosis (IPF) is a complex interstitial lung disease in which myofibroblasts are the primary effector cells. FK506-binding protein (FKBP10), a procollagen chaperone, is upregulated in IPF and primarily localizes to myofibroblasts. Exosomes have garnered significant attention as novel drug delivery vehicles, particularly when engineered. However, myofibroblasts remain underexplored in terms of engineered exosome-based therapies and associated drug targets. In this study, RDYH58, a peptide that targets myofibroblasts, was conjugated to the exosomal membrane protein Lamp2b to produce RDYH58-linked exosomes (RDYH58-exo). <em>In vitro</em> and <em>in vivo</em> experiments demonstrated that compared to unmodified exosomes (unm-exo), RDYH58-exo preferentially localized to myofibroblasts. A small interfering RNA targeting FKBP10 (siFKBP10) was loaded into exosomes using ultrasonic microfluidics method, and the antifibrotic effects of RDYH58-exo carrying siFKBP10 (RDYH58-siFKBP10) were assessed both <em>in vitro</em> and <em>in vivo</em>. The results demonstrated that RDYH58-siFKBP10 effectively silenced FKBP10 gene expression, significantly inhibiting fibroblast activation and extracellular matrix deposition, with superior antifibrotic efficacy compared to unmodified exosome vectors (unm-siFKBP10). RNA-seq analysis confirmed the pivotal regulatory role of FKBP10, providing critical evidence for the development of targeted therapeutic strategies. The RDYH58-siFKBP10 delivery system developed in this study demonstrates remarkable clinical translation potential.</div></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":"15 12","pages":"Pages 6681-6697"},"PeriodicalIF":14.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145736608","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}
Pub Date : 2025-12-01DOI: 10.1016/j.apsb.2025.05.041
Jian Rong , Chunyu Zhao , Ahmad F. Chaudhary , Tim Ware , Richard S. Van , Yinlong Li , Erick R. Calderon Leon , Vivi Dang , Jiahui Chen , Zhiwei Xiao , Xin Zhou , Wei Zhang , Chunyang Bi , Kuo Zhang , Jimmy S. Patel , Yihan Shao , Chongzhao Ran , Ludovic Collin , Achi Haider , Benjamin F. Cravatt , Steven H. Liang
Monoacylglycerol lipase (MAGL) constitutes a crucial serine hydrolase within the endocannabinoid system, which has been suggested as a potential therapeutic target for the treatment of various neurodegenerative disorders. While MAGL inhibitors have entered the clinical arena, a highly selective and MAGL-specific positron emission tomography (PET) ligand holds promise to significantly facilitate clinical drug development by allowing the quantification of MAGL levels and the assessment of target occupancy in patients. Accordingly, this study aimed to develop a new series of reversible MAGL inhibitor candidates, based on a piperazinyl azetidine diamide scaffold. Compound 3 demonstrated the most promising performance characteristics in pharmacological evaluations compared to other MAGL inhibitor candidates. Subsequently, it was labeled with fluorine-18 and further assessed through autoradiography and PET imaging, as well as ex vivo biodistribution and metabolite analysis experiments in rodents. Compound 3 exhibited a heterogeneous radioactivity distribution, favorable brain uptake, and excellent in vivo binding specificity. Target occupancy studies with a therapeutic MAGL inhibitor demonstrated a dose-dependent PET signal reduction of [18F]3 in rat brains. In conclusion, [18F]3 ([18F]MAGL-2011) has the potential to serve as an effective MAGL PET ligand.
{"title":"Development of a novel 18F-labeled reversible-binding radioligand for imaging monoacylglycerol lipase with positron emission tomography","authors":"Jian Rong , Chunyu Zhao , Ahmad F. Chaudhary , Tim Ware , Richard S. Van , Yinlong Li , Erick R. Calderon Leon , Vivi Dang , Jiahui Chen , Zhiwei Xiao , Xin Zhou , Wei Zhang , Chunyang Bi , Kuo Zhang , Jimmy S. Patel , Yihan Shao , Chongzhao Ran , Ludovic Collin , Achi Haider , Benjamin F. Cravatt , Steven H. Liang","doi":"10.1016/j.apsb.2025.05.041","DOIUrl":"10.1016/j.apsb.2025.05.041","url":null,"abstract":"<div><div>Monoacylglycerol lipase (MAGL) constitutes a crucial serine hydrolase within the endocannabinoid system, which has been suggested as a potential therapeutic target for the treatment of various neurodegenerative disorders. While MAGL inhibitors have entered the clinical arena, a highly selective and MAGL-specific positron emission tomography (PET) ligand holds promise to significantly facilitate clinical drug development by allowing the quantification of MAGL levels and the assessment of target occupancy in patients. Accordingly, this study aimed to develop a new series of reversible MAGL inhibitor candidates, based on a piperazinyl azetidine diamide scaffold. Compound <strong>3</strong> demonstrated the most promising performance characteristics in pharmacological evaluations compared to other MAGL inhibitor candidates. Subsequently, it was labeled with fluorine-18 and further assessed through autoradiography and PET imaging, as well as <em>ex vivo</em> biodistribution and metabolite analysis experiments in rodents. Compound <strong>3</strong> exhibited a heterogeneous radioactivity distribution, favorable brain uptake, and excellent <em>in vivo</em> binding specificity. Target occupancy studies with a therapeutic MAGL inhibitor demonstrated a dose-dependent PET signal reduction of [<sup>18</sup>F]<strong>3</strong> in rat brains. In conclusion, [<sup>18</sup>F]<strong>3</strong> ([<sup>18</sup>F]MAGL-2011) has the potential to serve as an effective MAGL PET ligand.</div></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":"15 12","pages":"Pages 6714-6726"},"PeriodicalIF":14.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145736059","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}
Pub Date : 2025-12-01DOI: 10.1016/j.apsb.2025.10.012
Nan Wang , Lingling Wu , Yaya Su , Chi Zhang , Xu Chen , Hailong Yuan
Atopic dermatitis (AD) is a prevalent cutaneous condition with chronic inflammation and immune dysregulation, posing a public health concern owing to its long-lasting and recurrent nature. Butyrate, a short-chain fatty acid produced by gut microbiota, exhibits significant anti-inflammatory effects in AD. Yet, its delivery via butyrylated starch for prolonged release in the colon has not been adequately investigated. In this study, butyrylated Smilax glabra starch (BSGS) was synthesized and its therapeutic potential against AD via modulation of the gut–skin axis was examined. BSGS exhibited a C-type crystalline structure and highly resistance to gastrointestinal digestion. In vitro anaerobic fermentation showed that BSGS effectively promoted the generation of short-chain fatty acids, especially butyrate, and positively influenced the gut microbial composition. In AD mice, BSGS administration considerably mitigated cutaneous inflammation, lowered serum proinflammatory cytokines, restored intestinal barrier integrity, and modulated gut microbiota by increasing Bacteroides and norank_f__Prevotellaceae while decreasing Alistipes and norank_o__RF39. This therapeutic effect was associated with butyrate release and NF-κB pathway suppression, as evidenced by the reduced phosphorylation of p65 and IκBα. These findings establish that BSGS, a novel colon-targeted butyrate donor, holds promising potential in AD treatment by modulating the immune system via the gut–skin axis.
{"title":"Butyrylated Smilax glabra starch relieves atopic dermatitis through gut–skin axis modulation via colon-targeted delivery","authors":"Nan Wang , Lingling Wu , Yaya Su , Chi Zhang , Xu Chen , Hailong Yuan","doi":"10.1016/j.apsb.2025.10.012","DOIUrl":"10.1016/j.apsb.2025.10.012","url":null,"abstract":"<div><div>Atopic dermatitis (AD) is a prevalent cutaneous condition with chronic inflammation and immune dysregulation, posing a public health concern owing to its long-lasting and recurrent nature. Butyrate, a short-chain fatty acid produced by gut microbiota, exhibits significant anti-inflammatory effects in AD. Yet, its delivery <em>via</em> butyrylated starch for prolonged release in the colon has not been adequately investigated. In this study, butyrylated <em>Smilax glabra</em> starch (BSGS) was synthesized and its therapeutic potential against AD <em>via</em> modulation of the gut–skin axis was examined. BSGS exhibited a C-type crystalline structure and highly resistance to gastrointestinal digestion. <em>In vitro</em> anaerobic fermentation showed that BSGS effectively promoted the generation of short-chain fatty acids, especially butyrate, and positively influenced the gut microbial composition. In AD mice, BSGS administration considerably mitigated cutaneous inflammation, lowered serum proinflammatory cytokines, restored intestinal barrier integrity, and modulated gut microbiota by increasing <em>Bacteroides</em> and <em>norank_f__Prevotellaceae</em> while decreasing <em>Alistipes</em> and <em>norank_o__RF39</em>. This therapeutic effect was associated with butyrate release and NF-<em>κ</em>B pathway suppression, as evidenced by the reduced phosphorylation of p65 and I<em>κ</em>B<em>α</em>. These findings establish that BSGS, a novel colon-targeted butyrate donor, holds promising potential in AD treatment by modulating the immune system <em>via</em> the gut–skin axis.</div></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":"15 12","pages":"Pages 6587-6606"},"PeriodicalIF":14.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145736067","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}
Pub Date : 2025-12-01DOI: 10.1016/j.apsb.2025.08.023
Bo Huang , Emily Gregory-Lott , Bingbing X. Li , Timothy H. Tran , Sihao Li , Menglin Xue , Shaohui Wang , Anabanadam Asokan , Ning Shen , Xingming Sun , Chuanhai Cao , Xiangshu Xiao , Gary Daughdrill , Jianfeng Cai
Cyclic AMP-response element binding protein (CREB), a downstream transcription factor of multiple signaling pathways, is overexpressed in many different types of cancers. Thus, targeting CREB has great potential for the development of antitumor agents. Peptidic foldamers have emerged as a powerful tool to disrupt disease-related protein–protein interactions (PPIs) with chemodiversity and high stability towards enzymatic degradation. Herein, we harnessed several hydrophobic groups of helical sulfonyl-γ-AApeptide foldamer targeting the hydrophobic grooves on the surface of the KIX domain of CREB binding protein (CBP), to disrupt CREB/CBP PPI. We showed that several stapled sulfonyl-γ-AApeptides could suppress CREB-mediated gene transcription and exhibit effective antiproliferative activity in cell-based assays and demonstrate its potency in inhibiting tumor growth in vivo. Our studies suggest that sulfonyl-γ-AApeptides as a class of helical foldamer could mimic the helical kinase-inducible activation domain of CREB (KID) to target the hydrophobic grooves on the surface of CBP KIX domain, and thereby inhibiting KIX–KID interaction, which provides a new strategy for the development of antitumor agent by targeting PPIs involving intrinsically disordered proteins (IDPs).
{"title":"Discovery of peptidomimetic inhibitors of CREB/CBP by targeting hydrophobic grooves on the surface of the CBP KIX domain","authors":"Bo Huang , Emily Gregory-Lott , Bingbing X. Li , Timothy H. Tran , Sihao Li , Menglin Xue , Shaohui Wang , Anabanadam Asokan , Ning Shen , Xingming Sun , Chuanhai Cao , Xiangshu Xiao , Gary Daughdrill , Jianfeng Cai","doi":"10.1016/j.apsb.2025.08.023","DOIUrl":"10.1016/j.apsb.2025.08.023","url":null,"abstract":"<div><div>Cyclic AMP-response element binding protein (CREB), a downstream transcription factor of multiple signaling pathways, is overexpressed in many different types of cancers. Thus, targeting CREB has great potential for the development of antitumor agents. Peptidic foldamers have emerged as a powerful tool to disrupt disease-related protein–protein interactions (PPIs) with chemodiversity and high stability towards enzymatic degradation. Herein, we harnessed several hydrophobic groups of helical sulfonyl-<em>γ</em>-AApeptide foldamer targeting the hydrophobic grooves on the surface of the KIX domain of CREB binding protein (CBP), to disrupt CREB/CBP PPI. We showed that several stapled sulfonyl-<em>γ</em>-AApeptides could suppress CREB-mediated gene transcription and exhibit effective antiproliferative activity in cell-based assays and demonstrate its potency in inhibiting tumor growth <em>in vivo</em>. Our studies suggest that sulfonyl-<em>γ</em>-AApeptides as a class of helical foldamer could mimic the helical kinase-inducible activation domain of CREB (KID) to target the hydrophobic grooves on the surface of CBP KIX domain, and thereby inhibiting KIX–KID interaction, which provides a new strategy for the development of antitumor agent by targeting PPIs involving intrinsically disordered proteins (IDPs).</div></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":"15 12","pages":"Pages 6529-6545"},"PeriodicalIF":14.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145736070","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}
Pub Date : 2025-12-01DOI: 10.1016/j.apsb.2025.09.017
Yingying Xu , Jiajia Gui , Yunxiao Zhang , Simin Nan , Yujie Che , Xi Cao , Xianjun Fang , Tao Gong , Zhirong Zhang , Yao Fu
The kidneys are susceptible to hypoxia, proteinuria, and toxins, which can trigger acute kidney injury (AKI). Maladaptive repair of AKI results in the development of chronic kidney disease (CKD). Epithelial-mesenchymal transition (EMT) represents a pivotal mechanism underlying renal interstitial fibrosis (RIF). Myofibroblasts represent the primary effector cells of RIF with over 30% derived from renal tubular epithelial cells (RTECs). RTECs play a crucial role in CKD by generating part of EMT, while Snail1 is an effective inducer of EMT. Therefore, silencing Snail1 in RTECs and blocking the EMT process represents an original approach for treating RIF. Here, the positively charged l-arginine (L-Arg) and the hydrophobic fragment stearic acid (SA) were introduced on the chitosan oligosaccharide to afford a dual-targeted COA-SA micelle via size-, charge- and active targeting effects. The micelle overcomes the substantial disparity in physical and chemical properties between hydrophilic nucleic acid macromolecules and the anti-inflammatory small molecule celastrol and successfully establishes a codelivery platform. In vivo, COA-SA micelles can traverse the blood circulation, and glomerular filter, and overcome intracellular barriers to achieve efficient and precise drug delivery to RTECs. This results in the successful reversal of the EMT process in RTECs, thereby achieving a favorable anti-fibrosis effect.
{"title":"Targeting renal tubular epithelial cells via a dual functionalized oligosaccharide self-assembly in the management of acute and chronic kidney diseases","authors":"Yingying Xu , Jiajia Gui , Yunxiao Zhang , Simin Nan , Yujie Che , Xi Cao , Xianjun Fang , Tao Gong , Zhirong Zhang , Yao Fu","doi":"10.1016/j.apsb.2025.09.017","DOIUrl":"10.1016/j.apsb.2025.09.017","url":null,"abstract":"<div><div>The kidneys are susceptible to hypoxia, proteinuria, and toxins, which can trigger acute kidney injury (AKI). Maladaptive repair of AKI results in the development of chronic kidney disease (CKD). Epithelial-mesenchymal transition (EMT) represents a pivotal mechanism underlying renal interstitial fibrosis (RIF). Myofibroblasts represent the primary effector cells of RIF with over 30% derived from renal tubular epithelial cells (RTECs). RTECs play a crucial role in CKD by generating part of EMT, while Snail1 is an effective inducer of EMT. Therefore, silencing Snail1 in RTECs and blocking the EMT process represents an original approach for treating RIF. Here, the positively charged <span>l</span>-arginine (L-Arg) and the hydrophobic fragment stearic acid (SA) were introduced on the chitosan oligosaccharide to afford a dual-targeted COA-SA micelle <em>via</em> size-, charge- and active targeting effects. The micelle overcomes the substantial disparity in physical and chemical properties between hydrophilic nucleic acid macromolecules and the anti-inflammatory small molecule celastrol and successfully establishes a codelivery platform. <em>In vivo</em>, COA-SA micelles can traverse the blood circulation, and glomerular filter, and overcome intracellular barriers to achieve efficient and precise drug delivery to RTECs. This results in the successful reversal of the EMT process in RTECs, thereby achieving a favorable anti-fibrosis effect.</div></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":"15 12","pages":"Pages 6607-6625"},"PeriodicalIF":14.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145736094","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}
Pub Date : 2025-12-01DOI: 10.1016/j.apsb.2025.09.038
Ju Hwan Yang , Sumin Sohn , Sunghyun Kim , Jieun Kim , Su Yeon Seo , Aqsa Kazmi , Hanwoong Woo , John Q. Wang , Eun Sang Choe
Glutamine synthetase (GS) in astrocytes regulates glutamatergic neurotransmission by maintaining glutamate clearance in the brain. This study determined that GS in astrocytes of the caudate and putamen (CPu) regulates locomotor sensitization after repeated nicotine exposure. Nicotine increased phosphorylated c-Jun N-terminal kinase (pJNK) by stimulating α7 nicotinic acetylcholine receptors in cultured glioma C6 cells and primary astrocytes in a Ca2+-dependent manner. Active JNK phosphorylated metabotropic glutamate receptor 1a (mGluR1a) at the carboxyl terminus of glutathione S-transferase-tagged mGluR1a in vitro. Interference with the pJNK–mGluR1a interaction using the inhibitory peptide, Tat-mGluR1a-i (10 μmol/L), decreased the nicotine-induced increase in GS activity in glioma C6 cells and primary astrocytes. Similar results were obtained by bilateral intra-CPu infusion of the inhibitory peptide (2 nmol/side). Inhibition of GS activity by bilateral intra-CPu infusion of methionine sulfoximine (50 nmol/side) decreased the repeated nicotine-induced increase in locomotor activity. These findings suggest that astrocytes in the CPu upregulate locomotor sensitization by activating GS via the pJNK–mGluR1a interaction, which is linked to α7 nicotinic acetylcholine receptors in response to nicotine.
星形胶质细胞中的谷氨酰胺合成酶(GS)通过维持大脑中的谷氨酸清除来调节谷氨酸能神经传递。本研究确定尾状核和壳核(CPu)星形胶质细胞中的GS调节尼古丁反复暴露后的运动致敏。尼古丁通过刺激培养的胶质瘤C6细胞和原代星形胶质细胞中的α7烟碱乙酰胆碱受体,以Ca2+依赖的方式增加磷酸化的c-Jun n -末端激酶(pJNK)。活性JNK在体外磷酸化谷胱甘肽s转移酶标记的mGluR1a的羧基末端的代谢性谷氨酸受体1a (mGluR1a)。抑制肽Tat-mGluR1a-i (10 μmol/L)干扰pJNK-mGluR1a相互作用,可降低尼古丁诱导的胶质瘤C6细胞和初代星形胶质细胞中GS活性的增加。双侧cpu内注射抑制肽(2 nmol/侧)获得了类似的结果。双侧cpu内输注蛋氨酸亚砜胺(50 nmol/侧)对GS活性的抑制降低了尼古丁引起的运动活性的反复增加。这些发现表明,CPu中的星形胶质细胞通过pJNK-mGluR1a相互作用激活GS,从而上调运动敏化,而pJNK-mGluR1a相互作用与α7尼古丁乙酰胆碱受体有关。
{"title":"Glutamine synthetase in astrocytes of the caudate and putamen is responsible for locomotor sensitization after nicotine exposure","authors":"Ju Hwan Yang , Sumin Sohn , Sunghyun Kim , Jieun Kim , Su Yeon Seo , Aqsa Kazmi , Hanwoong Woo , John Q. Wang , Eun Sang Choe","doi":"10.1016/j.apsb.2025.09.038","DOIUrl":"10.1016/j.apsb.2025.09.038","url":null,"abstract":"<div><div>Glutamine synthetase (GS) in astrocytes regulates glutamatergic neurotransmission by maintaining glutamate clearance in the brain. This study determined that GS in astrocytes of the caudate and putamen (CPu) regulates locomotor sensitization after repeated nicotine exposure. Nicotine increased phosphorylated c-Jun N-terminal kinase (pJNK) by stimulating <em>α</em>7 nicotinic acetylcholine receptors in cultured glioma C6 cells and primary astrocytes in a Ca<sup>2+</sup>-dependent manner. Active JNK phosphorylated metabotropic glutamate receptor 1a (mGluR1a) at the carboxyl terminus of glutathione <em>S</em>-transferase-tagged mGluR1a <em>in vitro</em>. Interference with the pJNK–mGluR1a interaction using the inhibitory peptide, Tat-mGluR1a-i (10 μmol/L), decreased the nicotine-induced increase in GS activity in glioma C6 cells and primary astrocytes. Similar results were obtained by bilateral intra-CPu infusion of the inhibitory peptide (2 nmol/side). Inhibition of GS activity by bilateral intra-CPu infusion of methionine sulfoximine (50 nmol/side) decreased the repeated nicotine-induced increase in locomotor activity. These findings suggest that astrocytes in the CPu upregulate locomotor sensitization by activating GS <em>via</em> the pJNK–mGluR1a interaction, which is linked to <em>α</em>7 nicotinic acetylcholine receptors in response to nicotine.</div></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":"15 12","pages":"Pages 6399-6414"},"PeriodicalIF":14.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145736609","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}