Pub Date : 2025-09-06DOI: 10.1016/j.gendis.2025.101843
Samrat Roy Choudhury , Akhilesh Kaushal , Pritam Biswas , Cory Padilla , Jay F. Sarthy , Arundhati Chavan , Giselle Almeida Gonzalez , Soheil Meshinchi , Jason E. Farrar
Resistance to chemotherapy and subsequent relapse remain the primary challenge in pediatric acute myeloid leukemia (pAML), particularly in CBFA2T3-GLIS2 (C/G) fusion-positive acute megakaryoblastic leukemia. Here we demonstrate that the C/G fusion drives extensive DNA methylation changes and oncogenic enhancer activation at cis-regulatory elements (CREs), reshaping gene expression. This multi-omics analysis reveals a distinct hypermethylation pattern at promoters of up-regulated genes in C/G+ pAML across patient samples (n = 24) and representative cell lines, notably enriched in adhesion-related, TGFβ, or Wnt signaling pathways. Hypermethylated regions adjacent to transcription start sites (TSS) maintain open chromatin with H3K27ac enrichment, supporting a mechanism of de novo chromatin looping and active transcription in a non-canonical manner. Additionally, C/G fusion binding near the DNA methyltransferase 3B (DNMT3B) promoter correlates with elevated DNMT3B expression, implicating its role in aberrant DNA methylation changes at CREs. This study elucidates the epigenetic mechanisms driving C/G+ pAML, showing how the fusion reshapes chromatin and DNA methylation landscapes by impacting the expression (and likely activity) of epigenetic modifiers like DNMT3B. Functionally, DNMT3B inhibition enhances apoptotic sensitivity to BCL2 blockade, indicating that targeting DNMT3B may overcome apoptotic resistance in C/G+ leukemic cells and offer a therapeutic strategy for this high-risk subtype.
{"title":"Transcriptional rewiring by enhancer methylation in CBFA2T3-GLIS2–driven pediatric acute megakaryoblastic leukemia","authors":"Samrat Roy Choudhury , Akhilesh Kaushal , Pritam Biswas , Cory Padilla , Jay F. Sarthy , Arundhati Chavan , Giselle Almeida Gonzalez , Soheil Meshinchi , Jason E. Farrar","doi":"10.1016/j.gendis.2025.101843","DOIUrl":"10.1016/j.gendis.2025.101843","url":null,"abstract":"<div><div>Resistance to chemotherapy and subsequent relapse remain the primary challenge in pediatric acute myeloid leukemia (pAML), particularly in CBFA2T3-GLIS2 (C/G) fusion-positive acute megakaryoblastic leukemia. Here we demonstrate that the C/G fusion drives extensive DNA methylation changes and oncogenic enhancer activation at cis-regulatory elements (CREs), reshaping gene expression. This multi-omics analysis reveals a distinct hypermethylation pattern at promoters of up-regulated genes in C/G<sup>+</sup> pAML across patient samples (<em>n</em> = 24) and representative cell lines, notably enriched in adhesion-related, TGFβ, or Wnt signaling pathways. Hypermethylated regions adjacent to transcription start sites (TSS) maintain open chromatin with H3K27ac enrichment, supporting a mechanism of <em>de novo</em> chromatin looping and active transcription in a non-canonical manner. Additionally, C/G fusion binding near the DNA methyltransferase 3B (<em>DNMT3B</em>) promoter correlates with elevated <em>DNMT3B</em> expression, implicating its role in aberrant DNA methylation changes at CREs. This study elucidates the epigenetic mechanisms driving C/G<sup>+</sup> pAML, showing how the fusion reshapes chromatin and DNA methylation landscapes by impacting the expression (and likely activity) of epigenetic modifiers like DNMT3B. Functionally, DNMT3B inhibition enhances apoptotic sensitivity to BCL2 blockade, indicating that targeting DNMT3B may overcome apoptotic resistance in C/G<sup>+</sup> leukemic cells and offer a therapeutic strategy for this high-risk subtype.</div></div>","PeriodicalId":12689,"journal":{"name":"Genes & Diseases","volume":"13 1","pages":"Article 101843"},"PeriodicalIF":9.4,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145321366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-03DOI: 10.1016/j.gendis.2025.101840
Athar Khalil , Trang Dinh , Meaghan Parks , Rebecca C. Obeng , Berkley Gryder , Adam Kresak , Yuxiang Wang , Jeff Maltas , Madeline Bedrock , Xiangzhen Wei , Zachary Faber , Mira Rahm , Jacob Scott , Thomas LaFramboise , Zhenghe Wang , Christopher McFarland
The TBX2 subfamily of T-box transcription factors (e.g., Tbx2, Tbx3, Tbx4, Tbx5) plays an essential role in lung development. Down-regulation of these genes in human lung adenocarcinoma suggests that these genes may be tumor-suppressive; however, because down-regulation appears to occur primarily via epigenetic change, it remains unclear if these changes causally drive tumor progression or are merely the consequence of upstream events. Herein, we developed the first multiplexed mouse model to study the impact of TBX2 subfamily loss, alongside associated signaling genes (Egr1, Chd2, Tnfaip3a, and Atf3) in Ras-driven lung cancer. Using tumor-barcoding with high-throughput barcode sequencing (TuBa-seq), a high-throughput tumor-barcoding system, we quantified the growth effects of these knockouts during early and late tumorigenesis. Chd2 knockout suppressed both tumor initiation and progression, whereas Tnfaip3 knockout enhanced tumor initiation and overall tumor growth. Tbx2 loss showed stage-specific effects on tumor development. Notably, Egr1 emerged as a strong tumor suppressor and its knockout resulted in approximately a fivefold increase in tumor size at 20 weeks (two-sample t-test, p < 0.05), exceeding the impact observed with Rb1 loss. Transcriptomic analyses of Egr1-deficient tumors suggested immune dysregulation, including heightened inflammation and potential markers of T cell exhaustion in the tumor microenvironment. These findings indicate that Egr1 may play a role in suppressing tumor growth through modulating immune dynamics, offering new insights into the interplay between tumor progression and immune regulation in lung adenocarcinoma.
{"title":"In vivo multiplexed modeling reveals diverse roles of the TBX2 subfamily and Egr1 in Kras-driven lung adenocarcinoma","authors":"Athar Khalil , Trang Dinh , Meaghan Parks , Rebecca C. Obeng , Berkley Gryder , Adam Kresak , Yuxiang Wang , Jeff Maltas , Madeline Bedrock , Xiangzhen Wei , Zachary Faber , Mira Rahm , Jacob Scott , Thomas LaFramboise , Zhenghe Wang , Christopher McFarland","doi":"10.1016/j.gendis.2025.101840","DOIUrl":"10.1016/j.gendis.2025.101840","url":null,"abstract":"<div><div>The TBX2 subfamily of T-box transcription factors (<em>e.g.</em>, <em>Tbx2</em>, <em>Tbx3</em>, <em>Tbx4</em>, <em>Tbx5</em>) plays an essential role in lung development. Down-regulation of these genes in human lung adenocarcinoma suggests that these genes may be tumor-suppressive; however, because down-regulation appears to occur primarily via epigenetic change, it remains unclear if these changes causally drive tumor progression or are merely the consequence of upstream events. Herein, we developed the first multiplexed mouse model to study the impact of TBX2 subfamily loss, alongside associated signaling genes (<em>Egr1</em>, <em>Chd2</em>, <em>Tnfaip3a</em>, and <em>Atf3</em>) in <em>Ras</em>-driven lung cancer. Using tumor-barcoding with high-throughput barcode sequencing (TuBa-seq), a high-throughput tumor-barcoding system, we quantified the growth effects of these knockouts during early and late tumorigenesis. <em>Chd2</em> knockout suppressed both tumor initiation and progression, whereas <em>Tnfaip3</em> knockout enhanced tumor initiation and overall tumor growth. <em>Tbx2</em> loss showed stage-specific effects on tumor development. Notably, <em>Egr1</em> emerged as a strong tumor suppressor and its knockout resulted in approximately a fivefold increase in tumor size at 20 weeks (two-sample <em>t</em>-test, <em>p</em> < 0.05), exceeding the impact observed with <em>Rb1</em> loss. Transcriptomic analyses of <em>Egr1</em>-deficient tumors suggested immune dysregulation, including heightened inflammation and potential markers of T cell exhaustion in the tumor microenvironment. These findings indicate that <em>Egr1</em> may play a role in suppressing tumor growth through modulating immune dynamics, offering new insights into the interplay between tumor progression and immune regulation in lung adenocarcinoma.</div></div>","PeriodicalId":12689,"journal":{"name":"Genes & Diseases","volume":"13 3","pages":"Article 101840"},"PeriodicalIF":9.4,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
SUMOylation, a post-translational protein modification, plays a crucial role in regulating various biological processes. Dysregulation of SUMOylation has been linked to glioblastoma progression, impacting key signaling pathways. This review summarizes the current knowledge on SUMOylation's role in glioma malignancy, highlighting its influence on cell cycle regulation, PKB/AKT signaling pathway, and microRNA expression. Our work identifies Ubc9 as a promising therapeutic target due to its role in enhancing SUMOylation, promoting glioblastoma aggressiveness, and facilitating tumor proliferation. Additionally, SAE1 correlates with glioblastoma grade and affects cell cycle regulators, while SUMOylation stabilizes CDK6, driving the G1/S transition. Targeting these pathways with inhibitors, such as topotecan and chlorogenic acid, may provide novel treatment strategies. Furthermore, SUMOylation-driven alterations in transcription factors and DNA repair mechanisms contribute to therapy resistance. Understanding these mechanisms could pave the way for innovative interventions in glioblastoma management.
{"title":"Targeting SUMOylation in glioblastoma: A novel avenue for therapy and biomarker discovery","authors":"Wiktoria Dubanosow, Bartosz Lenda, Marta Żebrowska-Nawrocka, Dagmara Szmajda-Krygier, Rafał Świechowski, Ewa Balcerczak","doi":"10.1016/j.gendis.2025.101841","DOIUrl":"10.1016/j.gendis.2025.101841","url":null,"abstract":"<div><div>SUMOylation, a post-translational protein modification, plays a crucial role in regulating various biological processes. Dysregulation of SUMOylation has been linked to glioblastoma progression, impacting key signaling pathways. This review summarizes the current knowledge on SUMOylation's role in glioma malignancy, highlighting its influence on cell cycle regulation, PKB/AKT signaling pathway, and microRNA expression. Our work identifies Ubc9 as a promising therapeutic target due to its role in enhancing SUMOylation, promoting glioblastoma aggressiveness, and facilitating tumor proliferation. Additionally, SAE1 correlates with glioblastoma grade and affects cell cycle regulators, while SUMOylation stabilizes CDK6, driving the G1/S transition. Targeting these pathways with inhibitors, such as topotecan and chlorogenic acid, may provide novel treatment strategies. Furthermore, SUMOylation-driven alterations in transcription factors and DNA repair mechanisms contribute to therapy resistance. Understanding these mechanisms could pave the way for innovative interventions in glioblastoma management.</div></div>","PeriodicalId":12689,"journal":{"name":"Genes & Diseases","volume":"13 3","pages":"Article 101841"},"PeriodicalIF":9.4,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01DOI: 10.1016/j.gendis.2025.101839
Rui Mi , Jinnan Chen , Tianxiang Zhu , Huiqin Bian , Rong Wei , Rushuang Deng , Tiaotiao Han , Qian Wang , Yaojuan Lu , Longwei Qiao , Yuting Liang , Qiping Zheng
MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression post-transcriptionally, often playing critical roles in various biological processes. Recent studies have highlighted the involvement of miRNAs in chondrogenesis by targeting key marker genes. Among these, miR-101a has been identified as a significant regulator, previously reported to target cyclooxygenase-2 (Cox-2, ptgs2) in various contexts. Here, we investigate the role of miR-101a in chondrocyte hypertrophy and osteoarthritis (OA) progression, focusing on its regulation of Col10a1 expression. Using multiple web-based tools (TargetScan, PicTar, miRDB, and miRCODE), we identified miR-101a as a potential regulator of Col10a1. Our in vitro experiments demonstrated that miR-101a was down-regulated during chondrocyte hypertrophy in MCT and ATDC5 cells, while Col10a1 and Cox-2 expression levels were up-regulated. Overexpression of miR-101a via mimics resulted in a significant decrease in Col10a1 and Cox-2 at both mRNA and protein levels, whereas inhibition of miR-101a led to their up-regulation. Additionally, MMP-13 protein levels were reduced upon miR-101a overexpression, with no significant changes in Sox9 and Runx2 expression. Luciferase reporter assays confirmed that Cox-2 was a direct target of miR-101a, suggesting that miR-101a indirectly regulates Col10a1 expression via Cox-2. In vivo, intra-articular injection of miR-101a mimics in a medial meniscus-induced OA mouse model resulted in decreased Col10a1 expression and reduced articular damage, supporting the protective role of miR-101a in OA progression. Our findings highlight miR-101a as a negative regulator of chondrocyte hypertrophy through Cox-2, and could be a potential target for further exploration in OA therapy.
{"title":"Role of miR-101a in targeting Cox-2 to attenuate chondrocyte hypertrophic differentiation and osteoarthritis progression","authors":"Rui Mi , Jinnan Chen , Tianxiang Zhu , Huiqin Bian , Rong Wei , Rushuang Deng , Tiaotiao Han , Qian Wang , Yaojuan Lu , Longwei Qiao , Yuting Liang , Qiping Zheng","doi":"10.1016/j.gendis.2025.101839","DOIUrl":"10.1016/j.gendis.2025.101839","url":null,"abstract":"<div><div>MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression post-transcriptionally, often playing critical roles in various biological processes. Recent studies have highlighted the involvement of miRNAs in chondrogenesis by targeting key marker genes. Among these, miR-101a has been identified as a significant regulator, previously reported to target cyclooxygenase-2 (Cox-2, ptgs2) in various contexts. Here, we investigate the role of miR-101a in chondrocyte hypertrophy and osteoarthritis (OA) progression, focusing on its regulation of Col10a1 expression. Using multiple web-based tools (TargetScan, PicTar, miRDB, and miRCODE), we identified miR-101a as a potential regulator of Col10a1. Our <em>in vitro</em> experiments demonstrated that miR-101a was down-regulated during chondrocyte hypertrophy in MCT and ATDC5 cells, while Col10a1 and Cox-2 expression levels were up-regulated. Overexpression of miR-101a via mimics resulted in a significant decrease in Col10a1 and Cox-2 at both mRNA and protein levels, whereas inhibition of miR-101a led to their up-regulation. Additionally, MMP-13 protein levels were reduced upon miR-101a overexpression, with no significant changes in Sox9 and Runx2 expression. Luciferase reporter assays confirmed that Cox-2 was a direct target of miR-101a, suggesting that miR-101a indirectly regulates Col10a1 expression via Cox-2. <em>In vivo</em>, intra-articular injection of miR-101a mimics in a medial meniscus-induced OA mouse model resulted in decreased Col10a1 expression and reduced articular damage, supporting the protective role of miR-101a in OA progression. Our findings highlight miR-101a as a negative regulator of chondrocyte hypertrophy through Cox-2, and could be a potential target for further exploration in OA therapy.</div></div>","PeriodicalId":12689,"journal":{"name":"Genes & Diseases","volume":"13 3","pages":"Article 101839"},"PeriodicalIF":9.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146167234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-28DOI: 10.1016/j.gendis.2025.101827
Min Hou , Yujie Ding , Xuan Bao , Liangping Liu , Yulan Wang , Mingxing Wu
The ocular lens serves as an exemplary biological model for investigating mechanisms of fibrotic disease, particularly through its well-characterized epithelial–mesenchymal transition (EMT) process. In lens capsular fibrosis, lens epithelial cells (LECs) undergo phenotypic transformation mediated by the dysregulation of a complex signaling network. While multiple interconnected pathways have been implicated in this pathogenic process, current therapeutic strategies for anterior subcapsular cataract and postoperative capsular opacification remain predominantly surgical, underscoring the urgent need for targeted pharmacological interventions. SUMOylation, an essential post-translational modification system, orchestrates critical cellular processes, including gene expression, genome integrity, and cell cycle progression. Emerging evidence positions SUMOylation as a critical regulator of EMT in both fibrotic disorders and oncogenesis. Building on these insights, we hypothesized that SUMO-mediated post-transitional modifications may drive LEC transdifferentiation in lens fibrotic pathologies. Our experimental findings demonstrated that elevated global SUMOylation (SUMO1/2/3 conjugates) in human anterior subcapsular cataract specimens correlated with fibrotic progression. Sole SUMO isoform deficiency partially mitigated TGFβ2-driven EMT and injury-induced anterior subcapsular cataract. SUMO E1 overexpression enhanced LEC proliferative capacity, migration potential, and EMT progression. Pharmacological SUMO E1 inhibition (ML792) suppressed TGFβ2-induced SMAD4 SUMOylation, nuclear translocation, a critical TGFβ/SMAD signaling event. ML792 also eliminated TGFβ2-induced LEC EMT and experimental anterior subcapsular cataract. Our results establish SMAD4 SUMOylation as a pivotal molecular switch in lens fibrosis pathogenesis. Employing inhibitory drugs of SUMO conjugation in the years to come has the potential to be a novel therapeutic strategy for fibrotic cataracts.
{"title":"Blockage of SUMO E1 enzyme inhibits ocular lens fibrosis by mediating SMAD4 SUMOylation","authors":"Min Hou , Yujie Ding , Xuan Bao , Liangping Liu , Yulan Wang , Mingxing Wu","doi":"10.1016/j.gendis.2025.101827","DOIUrl":"10.1016/j.gendis.2025.101827","url":null,"abstract":"<div><div>The ocular lens serves as an exemplary biological model for investigating mechanisms of fibrotic disease, particularly through its well-characterized epithelial–mesenchymal transition (EMT) process. In lens capsular fibrosis, lens epithelial cells (LECs) undergo phenotypic transformation mediated by the dysregulation of a complex signaling network. While multiple interconnected pathways have been implicated in this pathogenic process, current therapeutic strategies for anterior subcapsular cataract and postoperative capsular opacification remain predominantly surgical, underscoring the urgent need for targeted pharmacological interventions. SUMOylation, an essential post-translational modification system, orchestrates critical cellular processes, including gene expression, genome integrity, and cell cycle progression. Emerging evidence positions SUMOylation as a critical regulator of EMT in both fibrotic disorders and oncogenesis. Building on these insights, we hypothesized that SUMO-mediated post-transitional modifications may drive LEC transdifferentiation in lens fibrotic pathologies. Our experimental findings demonstrated that elevated global SUMOylation (SUMO1/2/3 conjugates) in human anterior subcapsular cataract specimens correlated with fibrotic progression. Sole SUMO isoform deficiency partially mitigated TGFβ<sub>2</sub>-driven EMT and injury-induced anterior subcapsular cataract. SUMO E1 overexpression enhanced LEC proliferative capacity, migration potential, and EMT progression. Pharmacological SUMO E1 inhibition (ML792) suppressed TGFβ<sub>2</sub>-induced SMAD4 SUMOylation, nuclear translocation, a critical TGFβ/SMAD signaling event. ML792 also eliminated TGFβ<sub>2</sub>-induced LEC EMT and experimental anterior subcapsular cataract. Our results establish SMAD4 SUMOylation as a pivotal molecular switch in lens fibrosis pathogenesis. Employing inhibitory drugs of SUMO conjugation in the years to come has the potential to be a novel therapeutic strategy for fibrotic cataracts.</div></div>","PeriodicalId":12689,"journal":{"name":"Genes & Diseases","volume":"13 3","pages":"Article 101827"},"PeriodicalIF":9.4,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146167245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-26DOI: 10.1016/j.gendis.2025.101834
Zizhuo Li , Jiapeng Deng , Hai Wang , Tao Liu , Yuyang Zhou , Pei Ouyang , Xuan Liang , Xian Zhang , Songtao Qi , Yaomin Li
As a critical metabolite in the tumor microenvironment, glutamine plays a crucial role in tumor progression, and its dual effects on promoting and inhibiting tumors have garnered increasing attention in recent years. Glutamine metabolism in tumor cells has been extensively studied; however, there is currently a lack of a comprehensive description of how it interacts with tumor stromal components in the tumor microenvironment. This review focuses on the interaction of glutamine metabolism and a range of tumor stromal components, such as macrophages, dendritic cells, T cells, fibroblasts, collagen, and blood vessels in the tumor microenvironment, as well as a summary of current prospective anti-tumor therapeutics targeting glutamine metabolism. Furthermore, this study discusses the shortcomings of mechanism research, metabolic complexity, and metabolic therapy for glutamine metabolism and proposes future research directions that are expected to provide a theoretical foundation for clinical cancer treatment strategies.
{"title":"Overview of glutamine metabolism in stromal components of the tumor microenvironment and potential anti-tumor therapies","authors":"Zizhuo Li , Jiapeng Deng , Hai Wang , Tao Liu , Yuyang Zhou , Pei Ouyang , Xuan Liang , Xian Zhang , Songtao Qi , Yaomin Li","doi":"10.1016/j.gendis.2025.101834","DOIUrl":"10.1016/j.gendis.2025.101834","url":null,"abstract":"<div><div>As a critical metabolite in the tumor microenvironment, glutamine plays a crucial role in tumor progression, and its dual effects on promoting and inhibiting tumors have garnered increasing attention in recent years. Glutamine metabolism in tumor cells has been extensively studied; however, there is currently a lack of a comprehensive description of how it interacts with tumor stromal components in the tumor microenvironment. This review focuses on the interaction of glutamine metabolism and a range of tumor stromal components, such as macrophages, dendritic cells, T cells, fibroblasts, collagen, and blood vessels in the tumor microenvironment, as well as a summary of current prospective anti-tumor therapeutics targeting glutamine metabolism. Furthermore, this study discusses the shortcomings of mechanism research, metabolic complexity, and metabolic therapy for glutamine metabolism and proposes future research directions that are expected to provide a theoretical foundation for clinical cancer treatment strategies.</div></div>","PeriodicalId":12689,"journal":{"name":"Genes & Diseases","volume":"13 3","pages":"Article 101834"},"PeriodicalIF":9.4,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-25DOI: 10.1016/j.gendis.2025.101832
Yongle Xu , Shuangyue Ma , Manyi Xu , Hongbo Zhu , Yuncong Wang , Wenbo Dong , Jing Gan , Yusen Zhao , Xinrong Li , Shuangshuang Wang , Haoyu Hu , Jiaheng He , Shangwei Ning , Hui Zhi
5-Methylcytosine (5-mC) is the most prevalent DNA methylation modification in the human genome, and its abnormal patterns are strongly associated with tumor progression. Intratumoral and intertumoral DNA methylation heterogeneity (DNAmeH) primarily arises from cancer epigenome heterogeneity and the diverse cell compositions within the tumor microenvironment (TME). Furthermore, recent advancements in high-throughput sequencing and microarray technologies have facilitated the development of quantitative methods for measuring DNAmeH, enabling a more thorough exploration of the factors influencing it. Moreover, investigating various DNA methylation patterns at the single-cell level within the intricate TME sheds light on DNAmeH being driven by cellular heterogeneity. In addition, accumulating studies on the selection of methylation biomarkers in tissue or circulating DNA elucidate the cell specificity of DNA methylation, which is valuable for early cancer detection and personalized therapy. In this review, we elucidate the characteristics of intratumoral and intertumoral DNAmeH, considering DNAmeH differences across cancer types, among individual cells, and at allele-specific hemimethylation sites. Several metrics are summarized to quantitatively assess DNAmeH. We evaluate the factors that influence DNAmeH via these metrics, including the cell cycle phase, tumor mutational burden (TMB), cellular stemness, copy number variation (CNV), tumor subtype, tumor characteristics, tumor stage, state of tumor cells, hypoxia, and tumor purity. Finally, we highlight the deconvolution of TME cellular components and the application of predictive methylation biomarkers in cancer clinical research.
{"title":"DNA methylation heterogeneity in complex tumor microenvironment: Quantitative methods, influencing factors, and clinical implications","authors":"Yongle Xu , Shuangyue Ma , Manyi Xu , Hongbo Zhu , Yuncong Wang , Wenbo Dong , Jing Gan , Yusen Zhao , Xinrong Li , Shuangshuang Wang , Haoyu Hu , Jiaheng He , Shangwei Ning , Hui Zhi","doi":"10.1016/j.gendis.2025.101832","DOIUrl":"10.1016/j.gendis.2025.101832","url":null,"abstract":"<div><div>5-Methylcytosine (5-mC) is the most prevalent DNA methylation modification in the human genome, and its abnormal patterns are strongly associated with tumor progression. Intratumoral and intertumoral DNA methylation heterogeneity (DNAmeH) primarily arises from cancer epigenome heterogeneity and the diverse cell compositions within the tumor microenvironment (TME). Furthermore, recent advancements in high-throughput sequencing and microarray technologies have facilitated the development of quantitative methods for measuring DNAmeH, enabling a more thorough exploration of the factors influencing it. Moreover, investigating various DNA methylation patterns at the single-cell level within the intricate TME sheds light on DNAmeH being driven by cellular heterogeneity. In addition, accumulating studies on the selection of methylation biomarkers in tissue or circulating DNA elucidate the cell specificity of DNA methylation, which is valuable for early cancer detection and personalized therapy. In this review, we elucidate the characteristics of intratumoral and intertumoral DNAmeH, considering DNAmeH differences across cancer types, among individual cells, and at allele-specific hemimethylation sites. Several metrics are summarized to quantitatively assess DNAmeH. We evaluate the factors that influence DNAmeH via these metrics, including the cell cycle phase, tumor mutational burden (TMB), cellular stemness, copy number variation (CNV), tumor subtype, tumor characteristics, tumor stage, state of tumor cells, hypoxia, and tumor purity. Finally, we highlight the deconvolution of TME cellular components and the application of predictive methylation biomarkers in cancer clinical research.</div></div>","PeriodicalId":12689,"journal":{"name":"Genes & Diseases","volume":"13 3","pages":"Article 101832"},"PeriodicalIF":9.4,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}