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USP14 inhibition by degrasyn induces YAP1 degradation and suppresses the progression of radioresistant esophageal cancer degrasyn 对 USP14 的抑制可诱导 YAP1 降解并抑制耐放射性食管癌的进展。
IF 4.8 2区 医学 Q1 Biochemistry, Genetics and Molecular Biology Pub Date : 2025-02-01 DOI: 10.1016/j.neo.2024.101101
Fang Yuan , Juan Xu , Lingmei Xuan , Chan Deng , Wei Wang , Rong Yang
<div><h3>Background</h3><div>Radiotherapy is a major modality for esophageal cancer (ESCA) treatment, yet radioresistance severely hampers its therapeutic efficacy. Ubiquitin-specific peptidase 14 (USP14) is a novel deubiquitinase and can mediate cancer cells’ response to irradiation, although the underlying mechanism remains unclear, including in ESCA.</div></div><div><h3>Methods</h3><div>To evaluate the expression of USP14 in ESCA tissues or cells, we used RNA-Seq, immunoblotting, co-immunoprecipitation (Co-IP), ubiquitination, quantitative real-time polymerase chain reaction (qRT-PCR), and immunofluorescence assays in this investigation. Additionally, we used CCK8, cloning, and migration tests to examine the proliferation and migration of ESCA cells. We also used transplantation tumor mouse model to investigate the course of the cancer cell growth. Finally, we looked into the biological processes linked to USP14 using gene set enrichment analysis (GSEA), which was later verified.</div></div><div><h3>Results</h3><div>We observed a significant upregulation of USP14 in human ESCA tissues and cell lines, especially in those with radioresistance. Moreover, USP14 knockdown significantly restrained the proliferation and inhibited the radiation tolerance of ESCC cells. Here, we identified a potential inhibitor of USP14, Degrasyn (DGS), and investigated its regulatory effects on ESCA radioresistance and progression. We found that DGS had marked antiproliferative effects in radiosensitive ESCA cell lines. Notably, a low dose of DGS significantly enhanced the sensitivity of radioresistant ESCA cells to irradiation, as shown by the significantly reduced cell proliferation, migration, and invasion. Furthermore, the combination of DGS and X-ray irradiation strongly induced DNA damage in radioresistant ESCA cell lines by increasing the phosphorylation levels of H2AX (γ-H2AX) and checkpoint kinase 1/ataxia-telangiectasia-mutated-and-Rad3-related kinase (CHK1/ATR) signaling. Animal experiments confirmed the effective role of the DGS and X-ray combined treatment in reducing tumor growth and irradiation tolerance of ESCA <em>in vivo</em> with undetectable toxicity. Importantly, the promotive and malignant biological behaviors of ESCA cells suppressed by the DGS/X-ray combination treatment were almost eliminated by USP14 overexpression, along with the abolished DNA damage process. Mechanistically, we found that USP14 could interact with Yes-associated protein 1 (YAP1) and induce its deubiquitination in radioresistant ESCA cells. Interestingly, we discovered that DGS/X-ray co-therapy significantly reduced the stability of YAP1 and induced its ubiquitination in radioresistant ESCA cells. More importantly, the proliferation, epithelial-mesenchymal tansition (EMT) process, and DNA damage regulated by DGS/X-ray and USP14 knockdown were significantly eliminated when YAP1 was overexpressed in radioresistant ESCA cells.</div></div><div><h3>Conclusions</h3><div>These data
背景:放疗是食管癌(ESCA)治疗的主要方式,但放射抗性严重影响了其疗效。泛素特异性肽酶 14(USP14)是一种新型的去泛素化酶,可介导癌细胞对辐照的反应,但其潜在机制仍不清楚,包括在食管癌中:为了评估 USP14 在 ESCA 组织或细胞中的表达情况,我们使用了 RNA-Seq、免疫印迹、共免疫沉淀(Co-IP)、泛素化、实时定量聚合酶链反应(qRT-PCR)和免疫荧光检测等方法。此外,我们还使用了 CCK8、克隆和迁移试验来检测 ESCA 细胞的增殖和迁移。我们还利用移植肿瘤小鼠模型来研究癌细胞的生长过程。最后,我们利用基因组富集分析(GSEA)研究了与 USP14 相关的生物学过程,并进行了验证:结果:我们观察到 USP14 在人类 ESCA 组织和细胞系中明显上调,尤其是在具有放射抗性的组织和细胞系中。此外,敲除 USP14 能明显抑制 ESCC 细胞的增殖并抑制其辐射耐受性。在这里,我们发现了USP14的潜在抑制剂Degrasyn(DGS),并研究了它对ESCCA放射抗性和进展的调控作用。我们发现,DGS 对辐射敏感的 ESCA 细胞系有明显的抗增殖作用。值得注意的是,低剂量的DGS能显著增强耐放射ESCA细胞对辐照的敏感性,表现为细胞增殖、迁移和侵袭明显减少。此外,DGS 和 X 射线照射的组合通过增加 H2AX(γ-H2AX)的磷酸化水平和检查点激酶 1/ataxia-telangiectasia-mutated-and-Rad3-related kinase(CHK1/ATR)信号转导,强烈诱导耐放射ESCA细胞系的DNA损伤。动物实验证实,DGS 和 X 射线联合疗法能有效降低 ESCA 在体内的肿瘤生长和辐照耐受性,且毒性检测不到。重要的是,USP14 的过表达几乎消除了 DGS/X 射线联合治疗所抑制的 ESCA 细胞的促进性和恶性生物学行为,同时 DNA 损伤过程也被废除。从机理上讲,我们发现 USP14 可与 Yes-associated protein 1 (YAP1) 相互作用,并诱导其在抗放射 ESCA 细胞中去泛素化。有趣的是,我们发现 DGS/X 射线联合疗法能显著降低 YAP1 的稳定性,并诱导其在耐放射性 ESCA 细胞中泛素化。更重要的是,在耐放射ESCA细胞中过表达YAP1时,DGS/X-射线和USP14敲除所调控的增殖、上皮-间充质转化(EMT)过程和DNA损伤均明显消失:这些数据揭示了 DGS/X 射线联合疗法通过抑制 USP14/YAP1 轴在控制 ESCA 放射治疗耐药性方面的潜在作用,为 ESCA 治疗提供了一种候选策略。
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引用次数: 0
Galectin-3 secreted by triple-negative breast cancer cells regulates T cell function 三阴性乳腺癌细胞分泌半乳糖凝集素-3调节T细胞功能。
IF 4.8 2区 医学 Q1 Biochemistry, Genetics and Molecular Biology Pub Date : 2025-02-01 DOI: 10.1016/j.neo.2024.101117
Annat Raiter , Yael Barhum , Julia Lipovetsky , Chen Menachem , Sharona Elgavish , Shmuel Ruppo , Yehudit Birger , Shai Izraeli , Orna Steinberg-Shemer , Rinat Yerushalmi
Triple-negative breast cancer (TNBC) is an aggressive subtype that accounts for 10-15 % of breast cancer. Current treatment of high-risk early-stage TNBC includes neoadjuvant chemo-immune therapy. However, the substantial variation in immune response prompts an urgent need for new immune-targeting agents. This requires a comprehensive understanding of TNBC's tumor microenvironment. We recently demonstrated that Galectin-3 (Gal-3) binding protein/Gal-3 complex secreted by TNBC cells induces immunosuppression, through inhibiting CD45 signaling in T cells. Here, we further investigated the interaction between secreted Gal-3 and T cells in TNBC.
Using CRISPR/Cas9 gene editing of the TNBC MDA-MB-231 cell-line, we obtained Gal-3 negative(neg) clones. We studied these in an in-vitro model, co-cultured with peripheral blood mononuclear cells (PBMC) to imitate immune-tumor interaction, and in an in-vivo model, when implanted in mice.
Gal-3neg tumors in mice had decelerated tumor growth after PBMC inoculation. In contrast, the Gal-3 positive(pos) tumors continued growing despite PBMC inoculation, and tumor T regulatory cell (CD4/FoxP3+) infiltration increased. RNA sequencing of T cells from women with TNBC with elevated plasma levels of Gal-3 revealed significantly lower expression of oxidative phosphorylation genes than in T cells from healthy women. Similarly, in our in-vitro model, the decreased expression of oxidative phosphorylation genes and mitochondrial dysfunction resulted in a significant increase in CD8 intracellular reactive oxygen species. Consequently, T exhausted cells (CD8/PD1/Tim3/Lag3+) significantly increased in PBMC co-cultured with Gal-3pos TNBCs.
To conclude, we revealed a novel TNBC-related Gal-3 suppressor mechanism that involved upregulation of CD4 T regulatory and of CD8 T exhausted cells.
三阴性乳腺癌(TNBC)是一种侵袭性亚型,占乳腺癌的10- 15%。目前高危早期TNBC的治疗包括新辅助化疗-免疫治疗。然而,免疫反应的巨大变化促使迫切需要新的免疫靶向药物。这需要对TNBC的肿瘤微环境有全面的了解。我们最近证明TNBC细胞分泌的半乳糖凝集素-3 (Gal-3)结合蛋白/Gal-3复合物通过抑制T细胞中的CD45信号传导诱导免疫抑制。在这里,我们进一步研究了TNBC中分泌的Gal-3和T细胞之间的相互作用。利用CRISPR/Cas9基因编辑TNBC MDA-MB-231细胞系,我们获得了Gal-3阴性(neg)克隆。我们在体外模型中研究了这些,与外周血单核细胞(PBMC)共培养以模拟免疫-肿瘤相互作用,并在体内模型中植入小鼠。小鼠接种PBMC后,gal -3阴性肿瘤的生长速度减慢。相比之下,接种PBMC后,Gal-3阳性(pos)肿瘤继续生长,肿瘤T调节细胞(CD4/FoxP3+)浸润增加。对血浆Gal-3水平升高的TNBC女性的T细胞进行RNA测序发现,氧化磷酸化基因的表达明显低于健康女性的T细胞。同样,在我们的体外模型中,氧化磷酸化基因表达减少和线粒体功能障碍导致细胞内CD8活性氧显著增加。因此,在与Gal-3pos tnbc共培养的PBMC中,T耗竭细胞(CD8/PD1/Tim3/Lag3+)显著增加。总之,我们揭示了一种新的tnbc相关的Gal-3抑制机制,该机制涉及CD4 T调节和CD8 T耗竭细胞的上调。
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引用次数: 0
Global, regional, and national burden of very early-onset colorectal cancer and its risk factors from 1990 to 2019: A systematic analysis for the global burden of disease study 2019 1990 - 2019年极早发性结直肠癌的全球、区域和国家负担及其危险因素:2019年全球疾病负担研究的系统分析
IF 4.8 2区 医学 Q1 Biochemistry, Genetics and Molecular Biology Pub Date : 2025-02-01 DOI: 10.1016/j.neo.2024.101114
Zhen Junhai , Meng Yang , Tan Zongbiao , Yan Wenxuan , Li Tiange , Wu Yanrui , Liu Chuan , Dong Weiguo

Aims

Very early-onset colorectal cancer (EOCRC) was defined as CRC diagnosed before the age of 35 proposed by the latest EOCRC management guideline. Until now, the disease burden of very EOCRC has never been reported. This study aimed to explore the burden of very EOCRC across the past three decades.

Methods

We extracted the data from Global Burden of Disease Study to analyze the disease burden of very EOCRC. Risk factors for the burden of deaths and disability-adjusted life years (DALYs) due to very EOCRC were also explored in this study. Additionally, decomposition analysis and frontier analysis were also conducted.

Results

Despite regional and gender variations, the global very EOCRC incidence cases increased from 21,874 (95 % UI: 20,386-23,470) to 41,545 (95 % UI: 37,978-45,523). Besides, the deaths cases also increased from 11,445 (95 % UI: 10,545-12,374) to 15,486 (95 % UI: 14,289-16,803), and the DALYs cases increased from 718,136 (95 % UI: 659,858-778,283) to 961,460 (95 % UI: 886,807-1,042,734). Decomposition analysis revealed the epidemiological change contributed most to the incidence burden of very EOCRC. Countries or regions with Sociodemographic Index (SDI) between 0.4 and 0.8 had greater disease burden improvement potential through frontier analysis. Diet low in milk, diet low in calcium, alcohol use, and high body-mass index were the main contributors to deaths and DALYs.

Conclusions

The increase in CRC burden among populations younger than 35 years globally requires vigilance from policy makers, physicians, and young individuals themselves, especially those regions experiencing faster growth burden of very EOCRC.
目的:非常早发性结直肠癌(Very early-onset colorectal cancer, EOCRC)被最新的EOCRC管理指南定义为35岁之前诊断的结直肠癌。到目前为止,很少有EOCRC的疾病负担报告。本研究旨在探讨过去三十年中每个EOCRC的负担。方法:我们从全球疾病负担研究中提取数据,分析每个EOCRC的疾病负担。本研究还探讨了由于非常EOCRC导致的死亡负担和残疾调整生命年(DALYs)的风险因素。此外,还进行了分解分析和前沿分析。结果:尽管存在地区和性别差异,全球非常EOCRC发病率从21,874例(95% UI: 20,384 -23,470)增加到41,545例(95% UI: 37,978-45,523)。此外,死亡病例也从11,445例(95%死亡率:10,545-12,374)增加到15,486例(95%死亡率:14,289-16,803),残疾残疾者病例从718,136例(95%死亡率:659,858-778,283)增加到961,460例(95%死亡率:886,807-1,042,734)。分解分析表明,流行病学变化对所有EOCRC的发病负担贡献最大。前沿分析表明,社会人口指数(SDI)在0.4 ~ 0.8之间的国家或地区疾病负担改善潜力较大。低牛奶饮食、低钙饮食、饮酒和高体重指数是导致死亡和伤残调整生命年的主要因素。结论:全球35岁以下人群结直肠癌负担的增加需要政策制定者、医生和年轻人自身的警惕,特别是那些非常严重的结直肠癌负担增长更快的地区。
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引用次数: 0
Microbial molecules, metabolites, and malignancy 微生物分子、代谢物和恶性肿瘤。
IF 4.8 2区 医学 Q1 Biochemistry, Genetics and Molecular Biology Pub Date : 2025-02-01 DOI: 10.1016/j.neo.2025.101128
Ryan M. Thomas
Research elucidating the role of the microbiome in carcinogenesis has grown exponentially over the past decade. Initially isolated to associative studies on colon cancer development, the field has expanded to encompass nearly every solid and liquid malignancy that may afflict the human body. Investigations are rapidly progressing from association to causation and one particular area of causal effect relates to microbial metabolites and how they influence cancer development, progression, and treatment response. These metabolites can be produced de novo from individual members of the microbiome, whether that be bacteria, fungi, archaea, or other microbial organisms, or they can be through metabolic processing of dietary compounds or even host-derived molecules. In this review, contemporary research elucidating mechanisms whereby microbial-derived molecules and metabolites impact carcinogenesis and cancer treatment efficacy will be presented. While many of the examples focus on bacterial metabolites in colon carcinogenesis, this simply illustrates the accelerated nature of these investigations that occurred early in microbiome research but provides an opportunity for growth in other cancer areas. Indeed, research into the interaction of microbiome-derived metabolites in other malignancies is growing as well as investigations that involve non-bacterial metabolites. This review will provide the reader a framework to expand their knowledge regarding this complex and exciting field of cancer research.
在过去十年中,阐明微生物群在致癌作用的研究呈指数级增长。该领域最初仅局限于结肠癌发展的相关研究,现在已经扩展到几乎所有可能影响人体的固体和液体恶性肿瘤。研究正在迅速从关联发展到因果关系,其中一个特定的因果关系领域涉及微生物代谢物及其如何影响癌症的发生、进展和治疗反应。这些代谢物可以从微生物组的个体成员(无论是细菌、真菌、古生菌还是其他微生物)中重新产生,也可以通过饮食化合物甚至宿主衍生分子的代谢过程产生。在这篇综述中,当代研究阐明了微生物衍生分子和代谢物影响致癌和癌症治疗效果的机制。虽然许多例子都集中在结肠癌发生中的细菌代谢物上,但这仅仅说明了这些研究的加速性质,这些研究发生在微生物组研究的早期,但为其他癌症领域的发展提供了机会。事实上,对微生物衍生代谢物在其他恶性肿瘤中的相互作用的研究正在增加,涉及非细菌代谢物的研究也在增加。这篇综述将为读者提供一个框架来扩展他们对这个复杂而令人兴奋的癌症研究领域的知识。
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引用次数: 0
Global, regional and national burden of neuroblastoma and other peripheral nervous system tumors, 1990 to 2021 and predictions to 2035: visualizing epidemiological characteristics based on GBD 2021
IF 4.8 2区 医学 Q1 Biochemistry, Genetics and Molecular Biology Pub Date : 2025-02-01 DOI: 10.1016/j.neo.2025.101122
Chaoyan Yue , Qi Zhang , Fenyong Sun , Qiuhui Pan

Background

Neuroblastoma (NB) is the most common extracranial malignant solid tumor in children, accounting for >15 % of cancer-related deaths in children. We analyzed the epidemiological statistical indicators of neuroblastoma and other peripheral nervous system tumors patients from 1990 to 2021 in Global Burden of Disease (GBD) 2021 database, aiming to provide valuable insights for public health interventions and clinical practices.

Methods

Based on the GBD 2021 database, this study analyzed the incidence, mortality, prevalence, and Disability-Adjusted Life-Years (DALYs) of neuroblastoma and other peripheral nervous system tumors from 1990 to 2021, stratified by sociodemographic development index (SDI) and geographic regions. Cross-country inequalities analysis was conducted to quantify the SDI-related inequality of disease burden across countries. In addition, the average annual percentage change (AAPC) and Age-Period-Cohort (APC) model were used to evaluate the trend of disease burden, while the global burden of disease to 2035 was predicted by Bayesian Age-Period-Cohort (BAPC) model.

Findings

This study reported the disease burden of neuroblastoma and other peripheral nervous system tumors in GBD 2021 database for the first time. Globally, the incidence and mortality of neuroblastoma have increased year by year from 1990 to 2021, especially in regions with low SDI, such as South Asia and sub-Saharan Africa, where the burden of disease has increased significantly. Regions with high SDI, such as North America and Western Europe, have seen a reduction in disease burden due to higher levels of medical care and earlier diagnosis. The age distribution shows that children under 5 years of age are mainly affected, especially in low- and middle-income areas. In addition, the incidence is slightly higher in men than in women. The BAPC model predicts that the global incidence, mortality, and DALYs of neuroblastoma will continue to increase until 2035.

Interpretation

Significant regional and population variation in neuroblastoma and other peripheral nervous system tumors worldwide, with a particularly high disease burden in low SDI areas with limited medical resources. This trend highlights the urgent need for global public health interventions and resource allocation, particularly in low-income countries. Future research should focus on improving early diagnosis, risk stratification and target therapy in order to reduce the global burden of disease and improve patients’ prognosis.

Funding

This study was supported by National Natural Science Foundation of China (No. 82293662, No 82172357 and No 81930066), Key project of Shanghai "Science and Technology Innovation Action Plan (22JC1402304) and Research fund of Shanghai Municipal Health Bureau (No. 2019cxjq03).
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引用次数: 0
Corrigendum to “Depletion of ß1,6-N-acetylglucosaminyltransferase reduces E-selectin binding capacity and migratory potential of human gastrointestinal adenocarcinoma cells” [Neoplasia 59 (2024) 10183] “耗尽ß1,6- n -乙酰氨基葡萄糖转移酶降低人胃肠道腺癌细胞e -选择素结合能力和迁移潜力”[Neoplasia 59(2024) 10183]的更正。
IF 4.8 2区 医学 Q1 Biochemistry, Genetics and Molecular Biology Pub Date : 2025-02-01 DOI: 10.1016/j.neo.2025.101124
Lisa Staffeldt , Hanna Maar , Julia Beimdiek , Samuel Chambers , Kristoffer Riecken , Mark von Itzstein , Falk FR Buettner , Arun Everest-Dass , Tobias Lange
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引用次数: 0
Comparison of differences in transcriptional and genetic profiles between intra-central nervous system and extra-central nervous system large B-cell lymphoma 中枢神经系统内大 B 细胞淋巴瘤与中枢神经系统外大 B 细胞淋巴瘤转录和遗传特征差异比较。
IF 4.8 2区 医学 Q1 Biochemistry, Genetics and Molecular Biology Pub Date : 2025-02-01 DOI: 10.1016/j.neo.2024.101119
Shu Wang , Hong Chen , Bo Dai , Kang Zheng , Jiajun Zheng , Yuqi Zhu , Yan Yuan , Tianling Ding , Qian Wang , Liqian Xie , Rui Feng , Fengping Zhu , Jianbin Xiang , Weiqun Ding , Hong Ding , Yuan Li , Xiaodong Gu , Kunpeng Wu , Yifan Yuan , Jianping Song , Tong Chen
Primary central nervous system diffused large B-cell lymphoma (PCNS-DLBCL) is a rare type of non-Hodgkin lymphoma restricted to the central nervous system (CNS). To explore its specific pathogenesis and therapeutic targets, we performed multi-omics sequencing on tumor samples from patients diagnosed with PCNS-DLBCL, secondary CNS-DLBCL or extracranial (ec) DLBCL.By single-cell RNA sequencing, highly proliferated and dark zone (DZ)-related B cell subclusters, MKI67_B1, PTTG1_B2 and BTG1_B3, were predominant significantly in PCNS-DLBCL. Compared to SCNS-DLBCL and ecDLBCL, an immune-suppressive tumor microenvironment was observed in PCNS-DLBCL by analysis of immune-stimulating/inhibitory ligand‒receptor (L-R) pairs. By performing whole-exome sequencing in 93 patients, mutations enriched in BCR-NFkB and TLR pathways and the cooperation of these two pathways were found to be predominant in PCNS-DLBCL comparing to nonGCB-ecDLBCL. In summary, our study provides comprehensive insights into the transcriptomic and genetic characteristics of PCNS-DLBCL in contrast to ecDLBCL and will help dissect the oncogenic mechanism of this disease.
原发性中枢神经系统弥漫性大b细胞淋巴瘤(PCNS-DLBCL)是一种罕见的局限于中枢神经系统的非霍奇金淋巴瘤。为了探索其具体的发病机制和治疗靶点,我们对诊断为PCNS-DLBCL、继发性CNS-DLBCL或颅外(ec) DLBCL的患者的肿瘤样本进行了多组学测序。单细胞RNA测序结果显示,PCNS-DLBCL中存在与暗区(DZ)相关的高增殖B细胞亚群MKI67_B1、PTTG1_B2和BTG1_B3。与SCNS-DLBCL和ecDLBCL相比,PCNS-DLBCL通过免疫刺激/抑制配体受体(L-R)对分析,观察到免疫抑制肿瘤微环境。通过对93例患者进行全外显子组测序,发现PCNS-DLBCL中富集BCR-NFkB和TLR通路的突变以及这两种通路的协同作用在PCNS-DLBCL中比在non - cb - ecdlbcl中更为突出。总之,我们的研究提供了与ecDLBCL相比,PCNS-DLBCL的转录组学和遗传学特征的全面见解,并将有助于剖析该疾病的致癌机制。
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引用次数: 0
Tumor-Infiltrating Immune Cells in Colorectal Cancer 肿瘤浸润性免疫细胞在结直肠癌中的作用
IF 4.8 2区 医学 Q1 Biochemistry, Genetics and Molecular Biology Pub Date : 2025-01-01 DOI: 10.1016/j.neo.2024.101091
Sonia A.M. Ferkel, Elizabeth A. Holman, Raoul S. Sojwal, Samuel J.S. Rubin, Stephan Rogalla
Colorectal cancer encompasses a heterogeneous group of malignancies that differ in pathophysiological mechanisms, immune response and infiltration, therapeutic response, and clinical prognosis. Numerous studies have highlighted the clinical relevance of tumor-infiltrating immune cells among different types of colorectal tumors yet vary in cell type definitions and cell identification strategies. The distinction of immune signatures is particularly challenging when several immune subtypes are involved but crucial to identify novel intercellular mechanisms within the tumor microenvironment. In this review, we compile human and non-human studies on tumor-infiltrating immune cells and provide an overview of immune subtypes, their pathophysiological functions, and their prognostic role in colorectal cancer. We discuss how differentiating immune signatures can guide the development of immunotherapeutic targets and personalized treatment regimens. We analyzed comprehensive human protein biomarker profiles across the entire immune spectrum to improve interpretability and application of tumor studies and to ultimately enhance immunotherapy and advance precision medicine for colorectal cancer patients.
结直肠癌是一种异质性的恶性肿瘤,在病理生理机制、免疫反应和浸润、治疗反应和临床预后方面存在差异。许多研究强调了肿瘤浸润免疫细胞在不同类型结直肠肿瘤中的临床相关性,但在细胞类型定义和细胞识别策略上存在差异。当涉及几种免疫亚型时,免疫特征的区分尤其具有挑战性,但对于确定肿瘤微环境中新的细胞间机制至关重要。在这篇综述中,我们汇编了肿瘤浸润免疫细胞的人类和非人类研究,并概述了免疫亚型、它们的病理生理功能以及它们在结直肠癌中的预后作用。我们讨论如何区分免疫信号可以指导免疫治疗靶点和个性化治疗方案的发展。我们在整个免疫谱中分析了全面的人类蛋白质生物标志物谱,以提高肿瘤研究的可解释性和应用,并最终增强结直肠癌患者的免疫治疗和推进精准医学。
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引用次数: 0
circUBR5 promotes ribosome biogenesis and induces docetaxel resistance in triple-negative breast cancer cell lines via the miR-340-5p/CMTM6/c-MYC axis 在三阴性乳腺癌细胞系中,circUBR5通过miR-340-5p/CMTM6/c-MYC轴促进核糖体生物发生并诱导多西他赛耐药。
IF 4.8 2区 医学 Q1 Biochemistry, Genetics and Molecular Biology Pub Date : 2025-01-01 DOI: 10.1016/j.neo.2024.101062
Xuedong Wang , Xinping Wang , Juan Gu , Yilei Wei , Yueping Wang

Objective

Docetaxel (DTX) represents an effective chemotherapeutic agent for treating triple-negative breast cancer (TNBC), but the efficacy is strongly limited by drug resistance. c-MYC-mediated ribosome biogenesis is considered a feasible strategy to confront chemoresistance in BC. We elucidated the impact of CMTM6 on TNBC DTX chemoresistance by governing c-MYC-mediated ribosome biogenesis, and its upstream ceRNA regulatory pathways.

Methods

DTX-resistant TNBC cells MDA-MB-231R and HCC1937R were generated by exposing sensitive cells MDA-MB-231 and HCC1937 to escalating doses of DTX. The expression patterns of CMTM6 and c-MYC were assessed by Western blot. The relationships between CMTM6 and miR-340-5p, circUBR5 and miR-340-5p were determined using bioinformatics analysis, luciferase assay, RIP, RNA in situ hybridization and biotin-labeled miR co-precipitation assay. Following ectopic expression and depletion experiments in DTX-resistant cells, cell chemoresistance, apoptosis, colony formation and nascent protein synthesis were evaluated.

Results

CMTM6 expression was elevated in DTX-resistant TNBC cells. CMTM6 knockdown enhanced apoptosis of DTX-resistant TNBC cells and increased their sensitivity to DTX by blocking c-MYC-mediated ribosome biogenesis. Mechanistically, miR-340-5p targeted CMTM6 and negatively regulated the expression of CMTM6 in DTX-resistant TNBC cells. Moreover, circUBR5 attenuated the repression on CMTM6 expression as a ceRNA for miR-340-5p. circUBR5 knockdown inactivated c-MYC-mediated ribosome biogenesis, and therefore enhanced DTX efficacy by promoting miR-340-5p binding to CMTM6.

Conclusion

circUBR5 knockdown facilitated miR-340-5p-targeted CMTM6 via a ceRNA mechanism, thereby reducing c-MYC-mediated ribosome biogenesis and accelerating chemosensitization of DTX-resistant TNBC cells, which offered a theoretical guideline for clinical research on the feasibility of inhibiting ribosome biogenesis to reduce TNBC chemoresistance.
目的:多西他赛(Docetaxel, DTX)是治疗三阴性乳腺癌(triple negative breast cancer, TNBC)的有效化疗药物,但其疗效受到耐药性的强烈限制。c- myc介导的核糖体生物发生被认为是对抗BC化疗耐药的可行策略。我们通过调控c- myc介导的核糖体生物发生及其上游ceRNA调控途径,阐明了CMTM6对TNBC DTX化学耐药的影响。方法:将敏感细胞MDA-MB-231和HCC1937暴露于剂量递增的DTX,产生耐药TNBC细胞MDA-MB-231R和HCC1937R。Western blot检测CMTM6和c-MYC的表达模式。采用生物信息学分析、荧光素酶测定、RIP、RNA原位杂交和生物素标记miR共沉淀法测定CMTM6与miR-340-5p、cirbr5和miR-340-5p之间的关系。通过dtx耐药细胞的异位表达和耗尽实验,评估了细胞的化学耐药、凋亡、集落形成和新生蛋白合成。结果:CMTM6在dtx耐药TNBC细胞中表达升高。CMTM6敲低可通过阻断c- myc介导的核糖体生物发生,增强DTX耐药TNBC细胞的凋亡并增加其对DTX的敏感性。在机制上,miR-340-5p靶向CMTM6并负向调节CMTM6在dtx耐药TNBC细胞中的表达。此外,作为miR-340-5p的ceRNA, circUBR5减弱了对CMTM6表达的抑制。circUBR5敲低使c- myc介导的核糖体生物发生失活,因此通过促进miR-340-5p与CMTM6的结合增强了DTX的功效。结论:cirbr5敲低通过ceRNA机制促进mir -340-5p靶向CMTM6,从而减少c- myc介导的核糖体生物生成,加速dtx耐药TNBC细胞的化疗增敏,为临床研究抑制核糖体生物生成降低TNBC化疗耐药的可行性提供了理论指导。
{"title":"circUBR5 promotes ribosome biogenesis and induces docetaxel resistance in triple-negative breast cancer cell lines via the miR-340-5p/CMTM6/c-MYC axis","authors":"Xuedong Wang ,&nbsp;Xinping Wang ,&nbsp;Juan Gu ,&nbsp;Yilei Wei ,&nbsp;Yueping Wang","doi":"10.1016/j.neo.2024.101062","DOIUrl":"10.1016/j.neo.2024.101062","url":null,"abstract":"<div><h3>Objective</h3><div>Docetaxel (DTX) represents an effective chemotherapeutic agent for treating triple-negative breast cancer (TNBC), but the efficacy is strongly limited by drug resistance. c-MYC-mediated ribosome biogenesis is considered a feasible strategy to confront chemoresistance in BC. We elucidated the impact of CMTM6 on TNBC DTX chemoresistance by governing c-MYC-mediated ribosome biogenesis, and its upstream ceRNA regulatory pathways.</div></div><div><h3>Methods</h3><div>DTX-resistant TNBC cells MDA-MB-231R and HCC1937R were generated by exposing sensitive cells MDA-MB-231 and HCC1937 to escalating doses of DTX. The expression patterns of CMTM6 and c-MYC were assessed by Western blot. The relationships between CMTM6 and miR-340-5p, circUBR5 and miR-340-5p were determined using bioinformatics analysis, luciferase assay, RIP, RNA in situ hybridization and biotin-labeled miR co-precipitation assay. Following ectopic expression and depletion experiments in DTX-resistant cells, cell chemoresistance, apoptosis, colony formation and nascent protein synthesis were evaluated.</div></div><div><h3>Results</h3><div>CMTM6 expression was elevated in DTX-resistant TNBC cells. CMTM6 knockdown enhanced apoptosis of DTX-resistant TNBC cells and increased their sensitivity to DTX by blocking c-MYC-mediated ribosome biogenesis. Mechanistically, miR-340-5p targeted CMTM6 and negatively regulated the expression of CMTM6 in DTX-resistant TNBC cells. Moreover, circUBR5 attenuated the repression on CMTM6 expression as a ceRNA for miR-340-5p. circUBR5 knockdown inactivated c-MYC-mediated ribosome biogenesis, and therefore enhanced DTX efficacy by promoting miR-340-5p binding to CMTM6.</div></div><div><h3>Conclusion</h3><div>circUBR5 knockdown facilitated miR-340-5p-targeted CMTM6 via a ceRNA mechanism, thereby reducing c-MYC-mediated ribosome biogenesis and accelerating chemosensitization of DTX-resistant TNBC cells, which offered a theoretical guideline for clinical research on the feasibility of inhibiting ribosome biogenesis to reduce TNBC chemoresistance.</div></div>","PeriodicalId":18917,"journal":{"name":"Neoplasia","volume":"59 ","pages":"Article 101062"},"PeriodicalIF":4.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11697786/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142822730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ovulation sources ROS to confer mutagenic activities on the TP53 gene in the fallopian tube epithelium 排卵源ROS赋予输卵管上皮TP53基因诱变活性。
IF 4.8 2区 医学 Q1 Biochemistry, Genetics and Molecular Biology Pub Date : 2025-01-01 DOI: 10.1016/j.neo.2024.101085
Kanchana Subramani , Hsuan-Shun Huang , Pao-Chu Chen , Dah-Ching Ding , Tang-Yuan Chu

Introduction

Epidemiological studies have implicated ovulation as a risk factor for ovarian high-grade serous carcinoma (HGSC) at the initiation stage. Precancerous lesions of HGSC commonly exhibit TP53 mutations attributed to DNA deamination and are frequently localized in the fallopian tube epithelium (FTE), a site regularly exposed to ovulatory follicular fluid (FF). This study aimed to assess the mutagenic potential of FF and investigate the expression levels and functional role of activation-induced cytidine deaminase (AID) following ovulation, along with the resulting TP53 DNA deamination.

Methods

The mutagenic activity of FF toward premalignant and malignant FTE cells was determined using the hypoxanthine phosphoribosyl transferase (HPRT) mutation assay with or without AID knockdown. The sequential activation of AID, including expressional induction, nuclear localization, DNA binding, and deamination, was determined. AID inducers in FF were identified, and the times of action and signaling pathways were determined.

Results

FF induced AID activation and de novo FTE cell mutagenesis in two waves of activity in accordance with post-ovulation FF exposure. The ERK-mediated early activity started at 2 min and peaked at 45 min, and the NF-κB-mediated late activity started at 6 h and peaked at 8.5 h after exposure. ROS, TNF-α, and estradiol, which are abundant in FF, all induced the two activities, while all activities were abolished by antioxidant cotreatment. AID physically bound to and biochemically deaminated the TP53 gene, regardless of known mutational hotspots. It did not act on other prevalent tumor-suppressor genes of HGSC.

Conclusion

This study revealed the ROS-dependent AID-mediated mutagenic activity of the ovulatory FF. The results filled up the missing link between ovulation and the initial TP53 mutation and invited a strategy of antioxidation in prevention of HGSC.
流行病学研究表明,排卵是卵巢高级别浆液性癌(HGSC)发病阶段的危险因素。HGSC癌前病变通常表现为DNA脱氨引起的TP53突变,并且通常局限于输卵管上皮(FTE),这是一个经常暴露于排卵卵泡液(FF)的部位。本研究旨在评估FF的致突变潜力,并研究排卵后激活诱导胞苷脱氨酶(AID)的表达水平和功能作用,以及由此导致的TP53 DNA脱氨。方法:采用次黄嘌呤磷酸糖苷转移酶(HPRT)突变试验检测FF对恶性和恶性FTE细胞的致突变活性。确定了AID的顺序激活,包括表达诱导、核定位、DNA结合和脱胺作用。鉴定了FF中的AID诱导剂,确定了作用时间和信号通路。结果:FF诱导AID激活和新生FTE细胞突变的两波活性与排卵后FF暴露一致。erk介导的早期活性在暴露后2 min开始,45 min达到峰值;NF-κ b介导的晚期活性在暴露后6 h开始,8.5 h达到峰值。FF中富含的ROS、TNF-α和雌二醇均能诱导这两种活性,而抗氧化共处理均能消除这两种活性。AID与TP53基因物理结合并生化脱胺,而不考虑已知的突变热点。它不作用于其他常见的HGSC肿瘤抑制基因。结论:本研究揭示了排卵FF具有ros依赖性的aid介导的致突变活性。这些结果填补了排卵和初始TP53突变之间的缺失环节,并提出了抗氧化预防HGSC的策略。
{"title":"Ovulation sources ROS to confer mutagenic activities on the TP53 gene in the fallopian tube epithelium","authors":"Kanchana Subramani ,&nbsp;Hsuan-Shun Huang ,&nbsp;Pao-Chu Chen ,&nbsp;Dah-Ching Ding ,&nbsp;Tang-Yuan Chu","doi":"10.1016/j.neo.2024.101085","DOIUrl":"10.1016/j.neo.2024.101085","url":null,"abstract":"<div><h3>Introduction</h3><div>Epidemiological studies have implicated ovulation as a risk factor for ovarian high-grade serous carcinoma (HGSC) at the initiation stage. Precancerous lesions of HGSC commonly exhibit TP53 mutations attributed to DNA deamination and are frequently localized in the fallopian tube epithelium (FTE), a site regularly exposed to ovulatory follicular fluid (FF). This study aimed to assess the mutagenic potential of FF and investigate the expression levels and functional role of activation-induced cytidine deaminase (AID) following ovulation, along with the resulting TP53 DNA deamination.</div></div><div><h3>Methods</h3><div>The mutagenic activity of FF toward premalignant and malignant FTE cells was determined using the hypoxanthine phosphoribosyl transferase (HPRT) mutation assay with or without AID knockdown. The sequential activation of AID, including expressional induction, nuclear localization, DNA binding, and deamination, was determined. AID inducers in FF were identified, and the times of action and signaling pathways were determined.</div></div><div><h3>Results</h3><div>FF induced AID activation and <em>de novo</em> FTE cell mutagenesis in two waves of activity in accordance with post-ovulation FF exposure. The ERK-mediated early activity started at 2 min and peaked at 45 min, and the NF-κB-mediated late activity started at 6 h and peaked at 8.5 h after exposure. ROS, TNF-α, and estradiol, which are abundant in FF, all induced the two activities, while all activities were abolished by antioxidant cotreatment. AID physically bound to and biochemically deaminated the <em>TP53</em> gene, regardless of known mutational hotspots. It did not act on other prevalent tumor-suppressor genes of HGSC.</div></div><div><h3>Conclusion</h3><div>This study revealed the ROS-dependent AID-mediated mutagenic activity of the ovulatory FF. The results filled up the missing link between ovulation and the initial <em>TP53</em> mutation and invited a strategy of antioxidation in prevention of HGSC.</div></div>","PeriodicalId":18917,"journal":{"name":"Neoplasia","volume":"59 ","pages":"Article 101085"},"PeriodicalIF":4.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11664131/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142787442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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Neoplasia
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