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Goosecoid facilitates the metastasis of pancreatic adenocarcinoma by enhancing EMT and stemness via regulating TGF-β/SMAD2/3 signaling. Goosecoid通过调节TGF-β/SMAD2/3信号通路增强EMT和干性,促进胰腺腺癌转移。
IF 3.4 3区 生物学
Cell Cycle Pub Date : 2026-12-15 Epub Date: 2026-01-14 DOI: 10.1080/15384101.2025.2604772
Yong Meng, Rui Li, Weirong Jiang, Wenhao Chen, Zhen Xu, Zhiwen Li, Yisen Hou, Tianfei Wang
{"title":"Goosecoid facilitates the metastasis of pancreatic adenocarcinoma by enhancing EMT and stemness via regulating TGF-β/SMAD2/3 signaling.","authors":"Yong Meng, Rui Li, Weirong Jiang, Wenhao Chen, Zhen Xu, Zhiwen Li, Yisen Hou, Tianfei Wang","doi":"10.1080/15384101.2025.2604772","DOIUrl":"10.1080/15384101.2025.2604772","url":null,"abstract":"<p><p>Pancreatic adenocarcinoma (PAAD) is a highly aggressive malignant tumor of the gastrointestinal tract. Goosecoid (GSC), translated from a homeobox gene, is a protein participating in metastasis of assorted tumors. This study explores the role of GSC implicated in tumor metastasis, in PAAD progression. GSC expression in PAAD tissues and cells were tested by quantitative polymerase chain reaction (PCR) and western blot. GSC mRNA and protein expressions were elevated in PAAD tissues and cells. The impacts of GSC depletion or upregulation on PAAD cell proliferation, migration, invasion, cell cycle, and apoptosis were determined by colony formation assay, transwell assay, and flow cytometry. E-cadherin and N-cadherin expressions were tested through immunofluorescence to evaluate the epithelial-mesenchymal transition (EMT) process. The results showed that GSC depletion notably restrained cell proliferative and migratory capabilities and cell cycle, declined MMP2 and MMP9 activity, suppressed EMT process, and enhanced cell apoptosis. Nevertheless, GSC overexpression showed the opposite functions. Stem cell markers CD44 and CD133 were suppressed by GSC depletion and enhanced by GSC overexpression. Additionally, a sphere formation assay was implemented to test cell stemness. The levels of key proteins on TGF-β signaling were tested by western blot. GSC could activate TGF-β signaling in cells by promoting SMAD2/3 phosphorylation. The pathway inhibitor SIS3 notably counteracted the functions on cell malignant phenotypes induced by GSC overexpression. Moreover, xenograft tumor-bearing mouse models were established using male BALB/c nude mice to explore the effects of GSC knockdown on tumor growth and metastasis <i>in vivo</i>, and we found that GSC knockdown inhibited PAAD tumor growth and metastasis in xenograft models. GSC is expressed at a high level in PAAD and can facilitate PAAD metastasis by enhancing EMT and stemness via regulating TGF-β/SMAD2/3 signaling.</p>","PeriodicalId":9686,"journal":{"name":"Cell Cycle","volume":" ","pages":"1-17"},"PeriodicalIF":3.4,"publicationDate":"2026-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12915849/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145965249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A fasting-mimicking environment enhances procaspase-activating compound 1 in 2D and 3D glioma cell models. 在2D和3D胶质瘤细胞模型中,禁食模拟环境增强了procaspase激活化合物1。
IF 3.4 3区 生物学
Cell Cycle Pub Date : 2026-12-15 Epub Date: 2026-01-16 DOI: 10.1080/15384101.2026.2614017
Kiarn Roughley, Abass Khochaiche, Ari Landstra, Michael Valceski, Carolyn Hollis, Michael Lerch, Stéphanie Corde, Moeava Tehei
{"title":"A fasting-mimicking environment enhances procaspase-activating compound 1 in 2D and 3D glioma cell models.","authors":"Kiarn Roughley, Abass Khochaiche, Ari Landstra, Michael Valceski, Carolyn Hollis, Michael Lerch, Stéphanie Corde, Moeava Tehei","doi":"10.1080/15384101.2026.2614017","DOIUrl":"10.1080/15384101.2026.2614017","url":null,"abstract":"<p><p>Glioblastoma multiforme (GBM) is the most common form of malignant brain cancer and is generally approached with palliative intent. Preclinical studies suggest that short-term fasting may be an effective tool for enhancing existing cancer therapies by disrupting the glucose-dependent, oncogenic phenotype of many cancers. In this study, we investigated whether a fasting-mimicking environment (FME) enhances the efficacy of an emerging proapoptotic drug, procaspase-activating compound 1 (PAC-1), in 2D and 3D GBM cell models. Ad libitum food consumption (Fed) and FME conditions were simulated <i>in vitro</i> by modifying glucose, ketone and serum concentrations. The FME conditions enhanced PAC-1 in U87-MG, T98G and 9L-GS monolayer experiments by significantly reducing the PAC-1 50% inhibitory concentration (IC<sub>50</sub>), delaying cell growth and increasing apoptosis. Similarly, in the 3D spheroid models, the minimum concentration of PAC-1 required to reduce U87-MG and 9L-GS spheroid area was lower in the FME conditions than the Fed conditions. Additionally, we discovered that serum restriction was primarily responsible for the FME-induced PAC-1 enhancement. These finding are the first to demonstrate that fasting-mimicking conditions sensitize 2D and 3D glioma cell models to PAC-1, supporting the use of short-term fasting as a low-cost and widely accessible strategy for enhancing cancer therapies.</p>","PeriodicalId":9686,"journal":{"name":"Cell Cycle","volume":" ","pages":"1-12"},"PeriodicalIF":3.4,"publicationDate":"2026-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12915821/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145988393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Locus-specific transcriptional regulation of transposable elements by p53. p53对转座因子的基因座特异性转录调控。
IF 3.4 3区 生物学
Cell Cycle Pub Date : 2026-12-15 Epub Date: 2026-01-08 DOI: 10.1080/15384101.2026.2614019
Julia M Freewoman, Andrew J Rosato, Thomas M Russell, Feng Cui
{"title":"Locus-specific transcriptional regulation of transposable elements by p53.","authors":"Julia M Freewoman, Andrew J Rosato, Thomas M Russell, Feng Cui","doi":"10.1080/15384101.2026.2614019","DOIUrl":"10.1080/15384101.2026.2614019","url":null,"abstract":"<p><p>The tumor suppressor p53 protects genomic integrity in part by regulating transposable elements (TEs). Studies of p53-TE interactions rely on synthetic DNA and reporter assays, estimating expression only at the family or subfamily level and lacking locus-specific resolution. To address this limitation, we developed a computational pipeline for ChIP-seq and RNA-seq analysis that employs advanced algorithms to accurately assign short reads mapping to multiple genomic locations. This approach enables precise quantification of TE transcripts at the locus level. By integrating p53 ChIP peaks with differentially expressed TE transcripts, we performed a global analysis of TE expression upon p53 binding. Applying this framework to lung fibroblast IMR90 and colon cancer HCT116 cells treated with p53 activators, we observed a striking pattern: TEs were predominantly activated in normal IMR90 cells but repressed in HCT116 cancer cells. Further analysis of 24 transcriptomes and 10 cistromes confirmed this trend as a distinguishing hallmark between normal and cancer cells. At the family level, normal cells showed broad TE upregulation, whereas cancer cells exhibited selective repression of Alu and LINE elements. These findings provide the first comprehensive, locus-specific view of TE expression associated with p53 binding, implicating a potential role of chromatin context in TE regulation.</p>","PeriodicalId":9686,"journal":{"name":"Cell Cycle","volume":" ","pages":"1-17"},"PeriodicalIF":3.4,"publicationDate":"2026-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12915865/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145931616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamic changes in cellular mechanics and membrane microviscosity during migration of colorectal cancer cells. 结直肠癌细胞迁移过程中细胞力学和膜微粘度的动态变化。
IF 3.4 3区 生物学
Cell Cycle Pub Date : 2026-12-15 Epub Date: 2026-01-14 DOI: 10.1080/15384101.2026.2614023
Liubov Shimolina, Yuri M Efremov, Alexandra Khlynova, Nadezhda Ignatova, Marina K Kuimova, Peter S Timashev, Marina Shirmanova
{"title":"Dynamic changes in cellular mechanics and membrane microviscosity during migration of colorectal cancer cells.","authors":"Liubov Shimolina, Yuri M Efremov, Alexandra Khlynova, Nadezhda Ignatova, Marina K Kuimova, Peter S Timashev, Marina Shirmanova","doi":"10.1080/15384101.2026.2614023","DOIUrl":"10.1080/15384101.2026.2614023","url":null,"abstract":"<p><p>The ability of tumor cells to migrate and invade adjacent tissue is a key property underlying the metastatic process. To ensure greater deformability and to facilitate movement, migratory cells undergo multiple changes in biophysical parameters, including those of stiffness and membrane viscosity. However, reports on correlations between cell motility and stiffness, or between cell motility and membrane microviscosity are rather limited and conflicting. Here, using atomic force microscopy (AFM) and fluorescence lifetime imaging (FLIM), we have investigated alterations in the mechanical properties of cancer cells and in the microviscosity of their plasma membranes that are associated with the migration process. It was found that upon activation of migration either through a \"wound healing\" test or by inducing epithelial-mesenchymal transition, human colorectal cancer cells undergo profound biomechanical remodeling characterized by simultaneous decreases in cell stiffness and in plasma membrane microviscosity. Our findings, therefore, support the results of previous studies that have shown cell softening and membrane fluidization to be critical adaptive responses enabling cell movement and that these can be regarded as potential biomarkers of tumor cell motility, offering scope for identifying new therapeutic targets.</p>","PeriodicalId":9686,"journal":{"name":"Cell Cycle","volume":" ","pages":"1-19"},"PeriodicalIF":3.4,"publicationDate":"2026-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12915877/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145965241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The interplay between autophagy, p16INK4a, and senescence in tumor cells: a systematic review. 肿瘤细胞自噬、p16INK4a和衰老之间的相互作用:一项系统综述。
IF 3.4 3区 生物学
Cell Cycle Pub Date : 2026-12-15 Epub Date: 2025-11-29 DOI: 10.1080/15384101.2025.2597989
Ahmet Alperen Palabiyik, Esra Palabiyik
{"title":"The interplay between autophagy, p16<sup>INK4a</sup>, and senescence in tumor cells: a systematic review.","authors":"Ahmet Alperen Palabiyik, Esra Palabiyik","doi":"10.1080/15384101.2025.2597989","DOIUrl":"10.1080/15384101.2025.2597989","url":null,"abstract":"<p><p>Autophagy and cellular senescence are fundamental determinants of tumor cell fate. p16<sup>INK4a</sup> has emerged as a key regulator at the intersection of these processes, yet its mechanistic role in the autophagy - senescence axis remains incompletely defined. Understanding this interaction is essential for identifying novel therapeutic opportunities in oncology. A systematic literature search was conducted across PubMed, Web of Science, and Scopus for studies published between January 2000 and April 2025, yielding 10 eligible studies after the application of predefined criteria. Evidence shows a dual role of autophagy in tumor biology. In some models, autophagy increased p16<sup>INK4a</sup> and senescence-associated β-gal activity, leading to stable growth arrest. Under stress conditions, however, it supported tumor cell survival despite senescence signals. Mechanistically, p16<sup>INK4a</sup> acted both upstream, modulating autophagic flux, and downstream, as an effector of autophagy-induced senescence. Study heterogeneity limited direct comparisons. Autophagy and p16<sup>INK4a</sup> interact bidirectionally to regulate senescence, representing a critical axis that can shift tumor cells between suppression and survival. Future research should prioritize standardized protocols, longitudinal models, and therapeutic evaluations to clarify whether targeting this pathway can be translated into effective cancer interventions.</p>","PeriodicalId":9686,"journal":{"name":"Cell Cycle","volume":" ","pages":"1-11"},"PeriodicalIF":3.4,"publicationDate":"2026-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12915883/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145630449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
TimeVault turns vault particles into molecular memory of transcriptional states: how to decode the cellular black box. TimeVault将vault粒子转化为转录状态的分子记忆:如何解码细胞黑盒子。
IF 3.4 3区 生物学
Cell Cycle Pub Date : 2026-12-01 Epub Date: 2026-03-06 DOI: 10.1080/15384101.2026.2639760
Gaetano Santulli
{"title":"TimeVault turns vault particles into molecular memory of transcriptional states: how to decode the cellular black box.","authors":"Gaetano Santulli","doi":"10.1080/15384101.2026.2639760","DOIUrl":"10.1080/15384101.2026.2639760","url":null,"abstract":"<p><p>Cellular phenotypes are shaped not only by current molecular states but by transient transcriptional programs that encode prior experiences and influence future behavior. Conventional transcriptomic approaches, including bulk and single-cell RNA sequencing, provide high-resolution snapshots of gene expression but are intrinsically destructive, precluding direct linkage between past transcriptional states and downstream cellular fate. In this context, \"TimeVault\" introduces a fundamentally new paradigm by enabling intracellular storage of endogenous transcriptomes within living cells. By repurposing vault ribonucleoprotein particles to sequester and stabilize polyadenylated mRNA, TimeVault preserves unbiased, transcriptome-wide records of transcriptional states over timescales far exceeding native mRNA half-lives. This capability allows retrospective reconstruction of molecular histories that would otherwise be lost, bridging a critical gap between transient gene expression and long-term phenotypic outcomes. Application of TimeVault to canonical stress responses demonstrates precise temporal gating and durable transcript preservation, while its use in cancer models reveals preexisting transcriptional programs that predict drug-tolerant persister cell formation prior to therapy. These findings highlight the power of molecular memory devices to uncover causal relationships that remain invisible to conventional endpoint analyses. TimeVault establishes intracellular transcriptome archiving as a versatile tool with broad implications for developmental biology, stress adaptation, and therapeutic resistance.</p>","PeriodicalId":9686,"journal":{"name":"Cell Cycle","volume":"25 1","pages":"1-4"},"PeriodicalIF":3.4,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12969733/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147364072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
EP300 attenuates ferroptosis and stimulates proliferation, migration, and fibrosis of keloid fibroblasts via YY1/GPX4 axis. EP300通过YY1/GPX4轴减弱铁下垂,刺激瘢痕疙瘩成纤维细胞增殖、迁移和纤维化。
IF 3.4 3区 生物学
Cell Cycle Pub Date : 2026-12-01 Epub Date: 2026-02-19 DOI: 10.1080/15384101.2026.2627885
Jun Jin, Kai Wang, Chenxi Lu, Chenghao Yao, Feng Xie
{"title":"EP300 attenuates ferroptosis and stimulates proliferation, migration, and fibrosis of keloid fibroblasts <i>via</i> YY1/GPX4 axis.","authors":"Jun Jin, Kai Wang, Chenxi Lu, Chenghao Yao, Feng Xie","doi":"10.1080/15384101.2026.2627885","DOIUrl":"10.1080/15384101.2026.2627885","url":null,"abstract":"<p><p>The aim of this investigation was to identify the hub genes associated with ferroptosis in keloid. We analyzed the correlation between differentially expressed genes Yin Yang-1 (YY1) and glutathione peroxidase-4 (GPX4) with keloid by quantitative Real‑Time PCR and Western blot. Molecular biological experiments were conducted to identify the role of YY1 and GPX4 in human keloid fibroblasts (HKFs). glutathione and oxidized glutathione kit, Malondialdehyde Assay Kit and C11-BODIPY (581/591) fluorescence probe were applied to monitor ferroptosis. Gain-of-function and loss-of-function assay demonstrated that YY1 regulated proliferation, migration, fibrosis of HKFs <i>in vitro</i>. YY1 bind to the promoter sequence of target gene GPX4. YY1-induced HKFs ferroptosis was dependent on GPX4 pathway. Furthermore, we discovered that the UCSC Genome Browser Database included an enrichment of H3K27ac signals at the YY1 promoter region. The inhibition of proliferation, migration, fibrosis, and the activation of ferroptosis in knockdown of YY1 HKFs was reversed by EP300 overexpression.</p>","PeriodicalId":9686,"journal":{"name":"Cell Cycle","volume":"25 1","pages":"1-16"},"PeriodicalIF":3.4,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12928658/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146218689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
KCMF1 promotes malignant progression by NXN ubiquitin-dependent degradation in ovarian cancer. KCMF1通过卵巢癌中NXN泛素依赖性降解促进恶性进展。
IF 3.4 3区 生物学
Cell Cycle Pub Date : 2026-12-01 Epub Date: 2026-02-21 DOI: 10.1080/15384101.2026.2630888
Xinyu Xu, Ling Ouyang, Jiayuan Wang, Yan Dong, Xiaochuan Yu, Ju Zhou, Meng Jiang
{"title":"KCMF1 promotes malignant progression by NXN ubiquitin-dependent degradation in ovarian cancer.","authors":"Xinyu Xu, Ling Ouyang, Jiayuan Wang, Yan Dong, Xiaochuan Yu, Ju Zhou, Meng Jiang","doi":"10.1080/15384101.2026.2630888","DOIUrl":"10.1080/15384101.2026.2630888","url":null,"abstract":"<p><p>Ovarian cancer, one of the most lethal gynecologic malignancies, exhibits marked tumor heterogeneity. Potassium channel modulatory factor 1 (KCMF1), a RING zinc-finger protein with E3 ubiquitin ligase activity, has been implicated in tumorigenesis. However, the role of KCMF1 in ovarian cancer remains unclear. In this study, we found that KCMF1 was up-regulated in ovarian cancer tissues and that high KCMF1 expression correlated with poor survival of patients. Functional assays revealed that KCMF1 knockdown suppressed cell viability, hampered cell cycle progression, and inhibited proliferation in ovarian cancer cells. Moreover, silencing KCMF1 inhibited epithelial-mesenchymal transition (EMT), migration, and invasion in vitro. In vivo experiments confirmed that KCMF1 knockdown inhibited tumor growth and metastasis in nude mice. Conversely, KCMF1 overexpression had opposite effects in vitro and in vivo. IP-LC/MS and Label-free proteomic analysis identified nucleoredoxin (NXN), a multifunctional redox-active protein, as a potential substrate of KCMF1. Silencing NXN facilitated cell proliferation, migration, and invasion through activating the β-catenin signaling pathway. Mechanistically, we discovered that KCMF1 interacted with NXN and facilitates its degradation through K63-linked ubiquitination, thereby reducing NXN expression. Taken together, our study showed that KCMF1 promotes ovarian cancer progression through NXN, and KCMF1 might be a novel target for ovarian cancer therapy.</p>","PeriodicalId":9686,"journal":{"name":"Cell Cycle","volume":"25 1","pages":"1-19"},"PeriodicalIF":3.4,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12928634/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146257281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dysregulation of the Cyclin D/E2F activity as a core mechanism driving cancer stem cell plasticity and cell cycle dynamics. Cyclin D/E2F活性失调是驱动癌症干细胞可塑性和细胞周期动力学的核心机制。
IF 3.4 3区 生物学
Cell Cycle Pub Date : 2026-12-01 Epub Date: 2025-12-14 DOI: 10.1080/15384101.2025.2599081
Yasin Ahmadi, Trefa Mohammed, Sakhavat Abolhasani, Shwan Abdullah Hamad, Tahran Faiq
{"title":"Dysregulation of the Cyclin D/E2F activity as a core mechanism driving cancer stem cell plasticity and cell cycle dynamics.","authors":"Yasin Ahmadi, Trefa Mohammed, Sakhavat Abolhasani, Shwan Abdullah Hamad, Tahran Faiq","doi":"10.1080/15384101.2025.2599081","DOIUrl":"10.1080/15384101.2025.2599081","url":null,"abstract":"<p><p>Cancer stem cells (CSCs) represent a highly specialized intratumoral compartment responsible for tumor initiation, metastatic dissemination, therapeutic resistance, and disease recurrence. A central conceptual challenge in CSC biology is their capacity to oscillate between a quiescent G<sub>0</sub> state and a proliferative, stem-like phenotype, reflecting a high degree of phenotypic plasticity. Although dysregulation of the G1/S checkpoint is a hallmark of malignant transformation, its mechanistic contribution to CSC identity and plastic behavior remains poorly defined.This review outlines a conceptual model that integrates aberrant G1/S control with CSC state transitions. We propose that defective checkpoint regulation accelerates CSC proliferation, leading to the progressive intracellular accumulation of Cyclin D, which in turn drives a self-reinforcing, rapid G1 progression through phosphorylation-dependent pathways that operate independently of the slower, transcription-driven Cyclin D-Rb-E2F regulatory axis. With continued cycling, depletion of key E2F-regulated DNA replication factors ensues, eventually forcing CSCs into a quiescent, biosynthetic restoration phase. During this interval, essential genomic replication and cell cycle machinery are replenished until microenvironmental or intracellular cues trigger reentry into the proliferative cycle, giving rise to another burst of accelerated division.Through these cyclical perturbations in the Cyclin D/E2F balance, CSCs undergo temporally governed shifts between quiescent and proliferative states, thereby sustaining plasticity, intratumoral heterogeneity, and treatment-resistant phenotypes. This model also identifies potential therapeutic strategies, such as leveraging stimuli-responsive delivery systems that exploit cyclic CSC vulnerabilities.</p>","PeriodicalId":9686,"journal":{"name":"Cell Cycle","volume":" ","pages":"1-29"},"PeriodicalIF":3.4,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12915881/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145755134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Circular RNA circ_0050102 promotes colorectal cancer progression via modulation of the miR-3622a-3p/BIRC5 signaling pathway. 环状RNA circ_0050102通过调节miR-3622a-3p/BIRC5信号通路促进结直肠癌的进展。
IF 3.4 3区 生物学
Cell Cycle Pub Date : 2026-12-01 Epub Date: 2026-01-02 DOI: 10.1080/15384101.2025.2592659
Boyang Wang, Bin Zhang
{"title":"Circular RNA circ_0050102 promotes colorectal cancer progression via modulation of the miR-3622a-3p/BIRC5 signaling pathway.","authors":"Boyang Wang, Bin Zhang","doi":"10.1080/15384101.2025.2592659","DOIUrl":"10.1080/15384101.2025.2592659","url":null,"abstract":"<p><strong>Background: </strong>Colorectal cancer (CRC) represents a significant global health burden, requiring a deeper understanding of the molecular mechanisms that drive its progression. Circular RNAs (circRNAs) have appeared as crucial regulators in cancer, with circ_0050102 as a potential functional molecule in CRC. The present study aimed to determine the diagnostic and functional implications of circ_0050102 in CRC pathogenesis.</p><p><strong>Methods: </strong>The GSE172229, GSE205094, and GSE134834 datasets were used for the comprehensive analyses of circRNAs, microRNAs (miRNAs), and messenger RNAs (mRNAs) in CRC tumor samples. Functional experiments, including fluorescence in situ hybridization, knockdown assays, flow cytometric analysis, and luciferase reporter assay, were conducted to investigate the effect of circ_0050102 on CRC cell behavior. CircRNA - miRNA - mRNA interaction analysis provided information about the regulatory network that involved circ_0050102, miR-3622a-3p, and baculoviral IAP repeat-containing 5 (BIRC5). Furthermore, the functional impact of circ_0050102 on CRC tumor growth was investigated using in vivo xenograft models.</p><p><strong>Results: </strong>Our analysis determined circ_0050102 as a significantly differentially expressed circRNA in CRC, with a high area under the receiver operating characteristic curve value, indicating its diagnostic potential. Functional experiments revealed that circ_0050102 is predominantly localized in the cytoplasm of CRC tumor cells, and its knockdown significantly attenuates various CRC cell behavior aspects, including viability, invasion, and migration (p < 0.05). The interaction analysis revealed a potential regulatory axis that involves circ_0050102, miR-3622a-3p, and BIRC5. In vivo experiments demonstrated that circ_0050102 knockdown significantly attenuated CRC tumor development.</p><p><strong>Conclusion: </strong>Our results revealed that circ_0050102 promotes CRC progression through miR-3622a-3p and BIRC5. The circ_0050102-mediated regulatory network provides valuable information about the intricate mechanisms contributing to CRC pathogenesis.</p>","PeriodicalId":9686,"journal":{"name":"Cell Cycle","volume":" ","pages":"1-19"},"PeriodicalIF":3.4,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12915872/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145888738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","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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