1
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Sabour-Takanlou M, Sabour-Takanlou L, Biray-Avci C. EZH2-associated tumor malignancy: A prominent target for cancer treatment. Clin Genet 2024; 106:377-385. [PMID: 38881299 DOI: 10.1111/cge.14576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 05/29/2024] [Accepted: 06/05/2024] [Indexed: 06/18/2024]
Abstract
The discussion in this review centers around the significant relationships between EZH2 and the initiation, progression, metastasis, metabolism, drug resistance, and immune regulation of cancer. Polycomb group (PcG) proteins, which encompass two primary Polycomb repressor complexes (PRC1 and PRC2), have been categorized. PRC2 consists mainly of four subunits, namely EZH2, EED, SUZ12, and RbAp46/48. As the crucial catalytic component within the PRC2 complex, EZH2 plays a pivotal role in controlling a wide range of biological processes. Overexpression/mutations of EZH2 have been detected in a wide variety of tumors. Several mechanisms of EZH regulation have been identified, including regulation EZH2 mRNA by miRNAs, LncRNAs, accessibility to DNA via DNA-binding proteins, post-translational modifications, and transcriptional regulation. EZH2 signaling triggers cancer progression and may intervene with anti-tumor immunity; therefore it has charmed attention as an effective therapeutic target in cancer therapy. Numerous nucleic acid-based therapies have been used in the modification of EZH2. In addition to gene therapy approaches, pharmaceutical compounds can be used to target the EZH2 signaling pathway in the treatment of cancer. EZH2-associated tumor cells and immune cells enhance the effects of the immune response in a variety of human malignancies. The combination of epigenetic modifying agents, such as anti-EZH2 compounds with immunotherapy, could potentially be efficacious even in the context of immunosuppressive tumors. Summary, understanding the mechanisms underlying resistance to EZH2 inhibitors may facilitate the development of novel drugs to prevent or treat relapse in treated patients.
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Affiliation(s)
| | | | - Cigir Biray-Avci
- Department of Medical Biology, Faculty of Medicine, Ege University, Izmir, Turkey
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2
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Cai L, Liu Y, Li Y, Liu B, Cao Y, Yang W, Wang B, Sun T. TRIM37 interacts with EZH2 to epigenetically suppress PTCH1 and regulate stemness in glioma stem cells through sonic hedgehog pathway. J Neurooncol 2024; 169:269-279. [PMID: 38884661 DOI: 10.1007/s11060-024-04726-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 05/25/2024] [Indexed: 06/18/2024]
Abstract
BACKGROUND Glioma stem cells (GSCs), which are known for their therapy resistance, play a substantial role in treatment inefficacy for glioblastoma multiforme (GBM). TRIM37, a member of the tripartite motif (TRIM) protein family initially linked to a rare growth disorder, has been recognized for its oncogenic role. However, the mechanism by which TRIM37 regulates tumor growth in glioma and GSCs is unclear. METHODS For the in vitro experiments, gene expression was measured by western blotting, RT-qPCR, and immunofluorescence. Cell viability was detected by CCK-8, and cell apoptosis was detected by flow cytometry. The interaction between Enhancer of Zeste Homolog 2 (EZH2) and TRIM37 was verified by co-immunoprecipitation (Co-IP). The interaction between EZH2 and the PTCH1 promoter was verified using dual-luciferase reporter assay and chromatin immunoprecipitation (ChIP). For the in vivo experiments, an orthotopically implanted glioma mouse model was used to validate tumor growth. RESULTS The expression of TRIM37 is higher in GSCs compared with matched non-GSCs. TRIM37 knockdown promotes apoptosis, decreased stemness in GSCs, and reduces tumor growth in GSCs xenografts of nude mice. TRIM37 and EZH2 co-localize in the nucleus and interact with each other. TRIM37 knockdown or EZH2 inhibition downregulates the protein expressions associated with the Sonic Hedgehog (SHH) pathway. EZH2 epigenetically downregulates PTCH1 to activate SHH pathway in GSCs. CONCLUSIONS TRIM37 maintains the cell growth and stemness in GSCs through the interaction with EZH2. EZH2 activates SHH stem cell signaling pathway by downregulating the expression of SHH pathway suppressor PTCH1. Our findings suggest that TRIM37 may be a potential therapeutic target for GBM.
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Affiliation(s)
- Lize Cai
- Neurosurgery and Brain and Nerve Research Laboratory, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Yongsheng Liu
- Neurosurgery and Brain and Nerve Research Laboratory, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Yanyan Li
- Neurosurgery and Brain and Nerve Research Laboratory, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Bin Liu
- Department of Neurosurgery, Qinghai Provincial People's Hospital, Xining, Qinghai, China
| | - YuFei Cao
- Neurosurgery and Brain and Nerve Research Laboratory, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Wei Yang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, China.
| | - Bo Wang
- Department of Oncology, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China.
| | - Ting Sun
- Neurosurgery and Brain and Nerve Research Laboratory, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China.
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3
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Leone GM, Mangano K, Caponnetto S, Fagone P, Nicoletti F. Identification of Poliovirus Receptor-like 3 Protein as a Prognostic Factor in Triple-Negative Breast Cancer. Cells 2024; 13:1299. [PMID: 39120328 PMCID: PMC11312209 DOI: 10.3390/cells13151299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 06/07/2024] [Accepted: 08/02/2024] [Indexed: 08/10/2024] Open
Abstract
Triple-negative breast cancer (TNBC) represents an aggressive subtype of breast cancer, with a bad prognosis and lack of targeted therapeutic options. Characterized by the absence of estrogen receptors, progesterone receptors, and HER2 expression, TNBC is often associated with a significantly lower survival rate compared to other breast cancer subtypes. Our study aimed to explore the prognostic significance of 83 immune-related genes, by using transcriptomic data from the TCGA database. Our analysis identified the Poliovirus Receptor-Like 3 protein (PVRL3) as a critical negative prognostic marker in TNBC patients. Furthermore, we found that the Enhancer of Zeste Homolog 2 (EZH2), a well-known epigenetic regulator, plays a pivotal role in modulating PVRL3 levels in TNBC cancer cell lines expressing EZH2 along with high levels of PVRL3. The elucidation of the EZH2-PVRL3 regulatory axis provides valuable insights into the molecular mechanisms underlying TNBC aggressiveness and opens up potential pathways for personalized therapeutic intervention.
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Affiliation(s)
- Gian Marco Leone
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 97, 95123 Catania, Italy; (G.M.L.); (K.M.); (F.N.)
| | - Katia Mangano
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 97, 95123 Catania, Italy; (G.M.L.); (K.M.); (F.N.)
| | - Salvatore Caponnetto
- Medical Oncology Unit B, Department of Radiology, Oncology and Pathology, Policlinico Umberto I, Sapienza University of Rome, 00161 Rome, Italy;
| | - Paolo Fagone
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 97, 95123 Catania, Italy; (G.M.L.); (K.M.); (F.N.)
| | - Ferdinando Nicoletti
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 97, 95123 Catania, Italy; (G.M.L.); (K.M.); (F.N.)
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4
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Wei L, Mei D, Hu S, Du S. Dual-target EZH2 inhibitor: latest advances in medicinal chemistry. Future Med Chem 2024; 16:1561-1582. [PMID: 39082677 DOI: 10.1080/17568919.2024.2380243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 07/09/2024] [Indexed: 09/03/2024] Open
Abstract
Enhancer of zeste homolog 2 (EZH2), a histone methyltransferase, plays a crucial role in tumor progression by regulating gene expression. EZH2 inhibitors have emerged as promising anti-tumor agents due to their potential in cancer treatment strategies. However, single-target inhibitors often face limitations such as drug resistance and side effects. Dual-target inhibitors, exemplified by EZH1/2 inhibitor HH-2853(28), offer enhanced efficacy and reduced adverse effects. This review highlights recent advancements in dual inhibitors targeting EZH2 and other proteins like BRD4, PARP1, and EHMT2, emphasizing rational design, structure-activity relationships, and safety profiles, suggesting their potential in clinical applications.
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Affiliation(s)
- Lai Wei
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology Department of Orthodontics, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Dan Mei
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology Department of Orthodontics, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Sijia Hu
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology Department of Orthodontics, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Shufang Du
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology Department of Orthodontics, Sichuan University, Chengdu, 610041, Sichuan, China
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5
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Chen Y, Zhu H, Luo Y, Tong S, Liu Y. EZH2: The roles in targeted therapy and mechanisms of resistance in breast cancer. Biomed Pharmacother 2024; 175:116624. [PMID: 38670045 DOI: 10.1016/j.biopha.2024.116624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 04/04/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Drug resistance presents a formidable challenge in the realm of breast cancer therapy. Accumulating evidence suggests that enhancer of zeste homolog 2 (EZH2), a component of the polycomb repressive complex 2 (PRC2), may serve as a key regulator in controlling drug resistance. EZH2 overexpression has been observed in breast cancer and many other malignancies, showing a strong correlation with poor outcomes. This review aims to summarize the mechanisms by which EZH2 regulates drug resistance, with a specific focus on breast cancer, in order to provide a comprehensive understanding of the underlying molecular processes. Additionally, we will discuss the current strategies and outcomes of targeting EZH2 using both single agents and combination therapies, with the goal of offering improved guidance for the clinical treatment of breast cancer patients who have developed drug resistance.
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Affiliation(s)
- Yun Chen
- Department of Clinical Pharmacy, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China; Clinical Pharmacy Innovation Institute, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China.
| | - Hongyan Zhu
- Department of Clinical Pharmacy, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China; Clinical Pharmacy Innovation Institute, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China.
| | - Yi Luo
- Clinical Pharmacy Innovation Institute, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China; Biotheus Inc., Guangdong Province, Zhuhai 519080, PR China.
| | - Shuangmei Tong
- Department of Clinical Pharmacy, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China; Clinical Pharmacy Innovation Institute, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China.
| | - Yan Liu
- Department of Clinical Pharmacy, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China; Clinical Pharmacy Innovation Institute, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China.
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Zhou L, Yu CW. Epigenetic modulations in triple-negative breast cancer: Therapeutic implications for tumor microenvironment. Pharmacol Res 2024; 204:107205. [PMID: 38719195 DOI: 10.1016/j.phrs.2024.107205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 04/23/2024] [Accepted: 04/30/2024] [Indexed: 06/01/2024]
Abstract
Triple-negative breast cancer (TNBC) is an aggressive subtype lacking estrogen receptors, progesterone receptors and lacks HER2 overexpression. This absence of critical molecular targets poses significant challenges for conventional therapies. Immunotherapy, remarkably immune checkpoint blockade, offers promise for TNBC treatment, but its efficacy remains limited. Epigenetic dysregulation, including altered DNA methylation, histone modifications, and imbalances in regulators such as BET proteins, plays a crucial role in TNBC development and resistance to treatment. Hypermethylation of tumor suppressor gene promoters and the imbalance of histone methyltransferases such as EZH2 and histone deacetylases (HDACs) profoundly influence tumor cell proliferation, survival, and metastasis. In addition, epigenetic alterations critically shape the tumor microenvironment (TME), including immune cell composition, cytokine signaling, and immune checkpoint expression, ultimately contributing to immune evasion. Targeting these epigenetic mechanisms with specific inhibitors such as EZH2 and HDAC inhibitors in combination with immunotherapy represents a compelling strategy to remodel the TME, potentially overcoming immune evasion and enhancing therapeutic outcomes in TNBC. This review aims to comprehensively elucidate the current understanding of epigenetic modulation in TNBC, its influence on the TME, and the potential of combining epigenetic therapies with immunotherapy to overcome the challenges posed by this aggressive breast cancer subtype.
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Affiliation(s)
- Linlin Zhou
- Institute of Immunotherapy, Fujian Medical University, Fuzhou, China; School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Chen-Wei Yu
- Department of Statistics and Information Science, Fu Jen Catholic University, New Taipei City, Taiwan.
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Monterroza L, Parrilla MM, Samaranayake SG, Rivera-Rodriguez DE, Yoon SB, Bommireddy R, Hosten J, Barragan LC, Marcus A, Dobosh BS, Selvaraj P, Tirouvanziam R. Tumor-Intrinsic Enhancer of Zeste Homolog 2 Controls Immune Cell Infiltration, Tumor Growth, and Lung Metastasis in a Triple-Negative Breast Cancer Model. Int J Mol Sci 2024; 25:5392. [PMID: 38791429 PMCID: PMC11121204 DOI: 10.3390/ijms25105392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 05/06/2024] [Accepted: 05/12/2024] [Indexed: 05/26/2024] Open
Abstract
Triple-negative breast cancer (TNBC) is an aggressive and highly metastatic type of tumor. TNBC is often enriched in tumor-infiltrating neutrophils (TINs), which support cancer growth in part by counteracting tumor-infiltrating lymphocytes (TILs). Prior studies identified the enhancer of zeste homolog 2 (EZH2) as a pro-tumor methyltransferase in primary and metastatic TNBCs. We hypothesized that EZH2 inhibition in TNBC cells per se would exert antitumor activity by altering the tumor immune microenvironment. To test this hypothesis, we used CRISPR to generate EZH2 gene knockout (KO) and overexpressing (OE) lines from parent (wild-type-WT) 4T1 cells, an established murine TNBC model, resulting in EZH2 protein KO and OE, respectively. In vitro, EZH2 KO and OE cells showed early, transient changes in replicative capacity and invasiveness, and marked changes in surface marker profile and cytokine/chemokine secretion compared to WT cells. In vivo, EZH2 KO cells showed significantly reduced primary tumor growth and a 10-fold decrease in lung metastasis compared to WT cells, while EZH2 OE cells were unchanged. Compared to WT tumors, TIN:TIL ratios were greatly reduced in EZH2 KO tumors but unchanged in EZH2 OE tumors. Thus, EZH2 is key to 4T1 aggressiveness as its tumor-intrinsic knockout alters their in vitro secretome and in vivo primary tumor growth, TIN/TIL poise, and metastasis.
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Affiliation(s)
- Lenore Monterroza
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA; (L.M.); (M.M.P.); (J.H.); (B.S.D.)
- Department of Pathology & Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA;
| | - Maria M. Parrilla
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA; (L.M.); (M.M.P.); (J.H.); (B.S.D.)
| | | | - Dormarie E. Rivera-Rodriguez
- Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA; (D.E.R.-R.); (L.C.B.)
| | - Sung Bo Yoon
- Department of Hematology & Medical Oncology, Emory University School of Medicine, Atlanta, GA 30322, USA; (S.B.Y.); (A.M.)
| | - Ramireddy Bommireddy
- Department of Pathology & Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA;
| | - Justin Hosten
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA; (L.M.); (M.M.P.); (J.H.); (B.S.D.)
| | - Luisa Cervantes Barragan
- Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA; (D.E.R.-R.); (L.C.B.)
| | - Adam Marcus
- Department of Hematology & Medical Oncology, Emory University School of Medicine, Atlanta, GA 30322, USA; (S.B.Y.); (A.M.)
| | - Brian S. Dobosh
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA; (L.M.); (M.M.P.); (J.H.); (B.S.D.)
| | - Periasamy Selvaraj
- Department of Pathology & Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA;
| | - Rabindra Tirouvanziam
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA; (L.M.); (M.M.P.); (J.H.); (B.S.D.)
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8
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El Baba R, Herbein G. EZH2-Myc Hallmark in Oncovirus/Cytomegalovirus Infections and Cytomegalovirus' Resemblance to Oncoviruses. Cells 2024; 13:541. [PMID: 38534385 DOI: 10.3390/cells13060541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 03/09/2024] [Accepted: 03/15/2024] [Indexed: 03/28/2024] Open
Abstract
Approximately 15-20% of global cancer cases are attributed to virus infections. Oncoviruses employ various molecular strategies to enhance replication and persistence. Human cytomegalovirus (HCMV), acting as an initiator or promoter, enables immune evasion, supporting tumor growth. HCMV activates pro-oncogenic pathways within infected cells and direct cellular transformation. Thus, HCMV demonstrates characteristics reminiscent of oncoviruses. Cumulative evidence emphasizes the crucial roles of EZH2 and Myc in oncogenesis and stemness. EZH2 and Myc, pivotal regulators of cellular processes, gain significance in the context of oncoviruses and HCMV infections. This axis becomes a central focus for comprehending the mechanisms driving virus-induced oncogenesis. Elevated EZH2 expression is evident in various cancers, making it a prospective target for cancer therapy. On the other hand, Myc, deregulated in over 50% of human cancers, serves as a potent transcription factor governing cellular processes and contributing to tumorigenesis; Myc activates EZH2 expression and induces global gene expression. The Myc/EZH2 axis plays a critical role in promoting tumor growth in oncoviruses. Considering that HCMV has been shown to manipulate the Myc/EZH2 axis, there is emerging evidence suggesting that HCMV could be regarded as a potential oncovirus due to its ability to exploit this critical pathway implicated in tumorigenesis.
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Affiliation(s)
- Ranim El Baba
- Department Pathogens & Inflammation-EPILAB EA4266, University of Franche-Comté UFC, 25000 Besançon, France
| | - Georges Herbein
- Department Pathogens & Inflammation-EPILAB EA4266, University of Franche-Comté UFC, 25000 Besançon, France
- Department of Virology, CHU Besançon, 25030 Besançon, France
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9
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Swaminathan G, Rogel-Ayala DG, Armich A, Barreto G. Implications in Cancer of Nuclear Micro RNAs, Long Non-Coding RNAs, and Circular RNAs Bound by PRC2 and FUS. Cancers (Basel) 2024; 16:868. [PMID: 38473229 DOI: 10.3390/cancers16050868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/13/2024] [Accepted: 02/16/2024] [Indexed: 03/14/2024] Open
Abstract
The eukaryotic genome is mainly transcribed into non-coding RNAs (ncRNAs), including different RNA biotypes, such as micro RNAs (miRNAs), long non-coding RNAs (lncRNAs), and circular RNAs (circRNAs), among others. Although miRNAs are assumed to act primarily in the cytosol, mature miRNAs have been reported and functionally characterized in the nuclei of different cells. Further, lncRNAs are important regulators of different biological processes in the cell nucleus as part of different ribonucleoprotein complexes. CircRNAs constitute a relatively less-characterized RNA biotype that has a circular structure as result of a back-splicing process. However, circRNAs have recently attracted attention in different scientific fields due to their involvement in various biological processes and pathologies. In this review, we will summarize recent studies that link to cancer miRNAs that have been functionally characterized in the cell nucleus, as well as lncRNAs and circRNAs that are bound by core components of the polycomb repressive complex 2 (PRC2) or the protein fused in sarcoma (FUS), highlighting mechanistic aspects and their diagnostic and therapeutic potential.
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Affiliation(s)
| | - Diana G Rogel-Ayala
- Université de Lorraine, CNRS, Laboratoire IMoPA, UMR 7365, F-54000 Nancy, France
- Lung Cancer Epigenetics, Max-Planck-Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Amine Armich
- Université de Lorraine, CNRS, Laboratoire IMoPA, UMR 7365, F-54000 Nancy, France
| | - Guillermo Barreto
- Université de Lorraine, CNRS, Laboratoire IMoPA, UMR 7365, F-54000 Nancy, France
- Lung Cancer Epigenetics, Max-Planck-Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
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10
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Rhodes CT, Asokumar D, Sohn M, Naskar S, Elisha L, Stevenson P, Lee DR, Zhang Y, Rocha PP, Dale RK, Lee S, Petros TJ. Loss of Ezh2 in the medial ganglionic eminence alters interneuron fate, cell morphology and gene expression profiles. Front Cell Neurosci 2024; 18:1334244. [PMID: 38419656 PMCID: PMC10899338 DOI: 10.3389/fncel.2024.1334244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/31/2024] [Indexed: 03/02/2024] Open
Abstract
Introduction Enhancer of zeste homolog 2 (Ezh2) is responsible for trimethylation of histone 3 at lysine 27 (H3K27me3), resulting in repression of gene expression. Here, we explore the role of Ezh2 in forebrain GABAergic interneuron development. Methods We removed Ezh2 in the MGE by generating Nkx2-1Cre;Ezh2 conditional knockout mice. We then characterized changes in MGE-derived interneuron fate and electrophysiological properties in juvenile mice, as well as alterations in gene expression, chromatin accessibility and histone modifications in the MGE. Results Loss of Ezh2 increases somatostatin-expressing (SST+) and decreases parvalbumin-expressing (PV+) interneurons in the forebrain. We observe fewer MGE-derived interneurons in the first postnatal week, indicating reduced interneuron production. Intrinsic electrophysiological properties in SST+ and PV+ interneurons are normal, but PV+ interneurons display increased axonal complexity in Ezh2 mutant mice. Single nuclei multiome analysis revealed differential gene expression patterns in the embryonic MGE that are predictive of these cell fate changes. Lastly, CUT&Tag analysis revealed that some genomic loci are particularly resistant or susceptible to shifts in H3K27me3 levels in the absence of Ezh2, indicating differential selectivity to epigenetic perturbation. Discussion Thus, loss of Ezh2 in the MGE alters interneuron fate, morphology, and gene expression and regulation. These findings have important implications for both normal development and potentially in disease etiologies.
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Affiliation(s)
- Christopher T Rhodes
- Unit on Cellular and Molecular Neurodevelopment, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), NIH, Bethesda, MD, United States
| | - Dhanya Asokumar
- Unit on Cellular and Molecular Neurodevelopment, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), NIH, Bethesda, MD, United States
- Unit on Genome Structure and Regulation, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), NIH, Bethesda, MD, United States
| | - Mira Sohn
- Bioinformatics and Scientific Programming Core, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), NIH, Bethesda, MD, United States
| | - Shovan Naskar
- Unit on Functional Neural Circuits, National Institute of Mental Health (NIMH), NIH, Bethesda, MD, United States
| | - Lielle Elisha
- Unit on Cellular and Molecular Neurodevelopment, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), NIH, Bethesda, MD, United States
| | - Parker Stevenson
- Unit on Functional Neural Circuits, National Institute of Mental Health (NIMH), NIH, Bethesda, MD, United States
| | - Dongjin R Lee
- Unit on Cellular and Molecular Neurodevelopment, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), NIH, Bethesda, MD, United States
| | - Yajun Zhang
- Unit on Cellular and Molecular Neurodevelopment, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), NIH, Bethesda, MD, United States
| | - Pedro P Rocha
- Unit on Genome Structure and Regulation, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), NIH, Bethesda, MD, United States
- National Cancer Institute (NCI), NIH, Bethesda, MD, United States
| | - Ryan K Dale
- Bioinformatics and Scientific Programming Core, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), NIH, Bethesda, MD, United States
| | - Soohyun Lee
- Unit on Functional Neural Circuits, National Institute of Mental Health (NIMH), NIH, Bethesda, MD, United States
| | - Timothy J Petros
- Unit on Cellular and Molecular Neurodevelopment, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), NIH, Bethesda, MD, United States
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11
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Wang QM, Lian GY, Sheng SM, Xu J, Ye LL, Min C, Guo SF. Exosomal lncRNA NEAT1 Inhibits NK-Cell Activity to Promote Multiple Myeloma Cell Immune Escape via an EZH2/PBX1 Axis. Mol Cancer Res 2024; 22:125-136. [PMID: 37889101 DOI: 10.1158/1541-7786.mcr-23-0282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 08/16/2023] [Accepted: 10/24/2023] [Indexed: 10/28/2023]
Abstract
Exosomal long noncoding RNAs (lncRNA) derived from cancer cells are implicated in various processes, including cancer cell proliferation, metastasis, and immunomodulation. We investigated the role and underlying mechanism of exosome-transmitted lncRNA NEAT1 in the immune escape of multiple myeloma cells from natural killer (NK) cells. Multiple myeloma cells and samples from patients with multiple myeloma were obtained. The effects of multiple myeloma cell-derived exosomes (multiple myeloma exosomes) and exosomal NEAT1 on the functions of NK cells were evaluated using EdU staining, CCK-8, flow cytometry, and ELISA. Chromatin and RNA immunoprecipitation were performed to identify interactions between NEAT1, enhancer of Zeste Homolog 2 (EZH2), and pre-B-cell leukemia transcription factor 1 (PBX1). A xenograft tumor model was constructed to verify the effects of exosomal NEAT1 on tumor growth. qRT-PCR, Western blot analysis, and IHC were conducted to detect related genes. NEAT1 levels were upregulated in multiple myeloma tumor tissues, multiple myeloma cells, and multiple myeloma exosomes. Multiple myeloma exosomes suppressed cell proliferation, promoted apoptosis, reduced natural killer group 2, member D (NKG2D)-positive cells, and the production of TNFα) and interferon-gamma (IFN-γ) in NK cells, whereas NEAT1-silenced exosomes had little effect. NEAT1 silenced PBX1 by recruiting EZH2. PBX1 knockdown abrogated the effects of NEAT1-silenced exosomes on NK and multiple myeloma cells. NEAT1-silenced exosomes inhibited tumor growth in mice, decreased Ki67 and PD-L1, and increased NKG2D, TNFα, and IFNγ in tumor tissues. In summary, multiple myeloma cell-derived exosomal NEAT1 suppressed NK-cell activity by downregulating PBX1, promoting multiple myeloma cell immune escape. This study suggests a potential strategy for treating multiple myeloma. IMPLICATIONS This study reveals that exosomal NEAT1 regulates EZH2/PBX1 axis to inhibit NK-cell activity, thereby promoting multiple myeloma cell immune escape, which offers a novel therapeutic potential for multiple myeloma.
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Affiliation(s)
- Qing-Ming Wang
- Department of Hematology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China
- Jiangxi Provincial Key Laboratory of Hematology, Nanchang, Jiangxi, China
| | - Guang-Yu Lian
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | | | - Jing Xu
- Department of Hematology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China
- Jiangxi Provincial Key Laboratory of Hematology, Nanchang, Jiangxi, China
| | - Long-Long Ye
- Department of Hematology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China
- Jiangxi Provincial Key Laboratory of Hematology, Nanchang, Jiangxi, China
| | - Chao Min
- Nanchang University, Nanchang, Jiangxi, China
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Zhu H, Lu J, Fu M, Chen P, Yu Y, Chen M, Zhao Q, Wu M, Ye M. YAP represses intestinal inflammation through epigenetic silencing of JMJD3. Clin Epigenetics 2024; 16:14. [PMID: 38245781 PMCID: PMC10800074 DOI: 10.1186/s13148-024-01626-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 01/10/2024] [Indexed: 01/22/2024] Open
Abstract
BACKGROUND Epigenetics plays an important role in the pathogenesis of inflammatory bowel disease (IBD). Some studies have reported that YAP is involved in inflammatory response and can regulate target genes through epigenetic modifications. JMJD3, a histone H3K27me3 demethylase, is associated with some inflammatory diseases. In this study, we investigated the role of YAP in the development of IBD and the underlying epigenetic mechanisms. RESULTS YAP expression was significantly increased in both in vitro and in vivo colitis models as well as in patients with IBD. Epithelial-specific knockout of YAP aggravates disease progression in dextran sodium sulfate (DSS)-induced murine colitis. In the TNF-α-activated cellular inflammation model, YAP knockdown significantly increased JMJD3 expression. Coimmunoprecipitation experiments showed that YAP and EZH2 bind to each other, and chromatin immunoprecipitation-PCR (ChIP-PCR) assay indicated that silencing of YAP or EZH2 decreases H3K27me3 enrichment on the promoter of JMJD3. Finally, administration of the JMJD3 pharmacological inhibitor GSK-J4 alleviated the progression of DSS-induced murine colitis. CONCLUSION Our findings elucidate an epigenetic mechanism by which YAP inhibits the inflammatory response in colitis through epigenetic silencing of JMJD3 by recruiting EZH2.
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Affiliation(s)
- Hua Zhu
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China
| | - Jiali Lu
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China
| | - MingYue Fu
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China
| | - Ping Chen
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China
| | - Yali Yu
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China
| | - Min Chen
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China
| | - Qiu Zhao
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China
| | - Min Wu
- Frontier Science Center for Immunology and Metabolism, Hubei Key Laboratory of Cell Homeostasis, Hubei Key Laboratory of Developmentally Originated Disease, Hubei Key Laboratory of Intestinal and Colorectal Diseases, College of Life Sciences, Wuhan University, Wuhan, 430072, Hubei, China
| | - Mei Ye
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China.
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China.
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Hashemi M, Nazdari N, Gholamiyan G, Paskeh MDA, Jafari AM, Nemati F, Khodaei E, Abyari G, Behdadfar N, Raei B, Raesi R, Nabavi N, Hu P, Rashidi M, Taheriazam A, Entezari M. EZH2 as a potential therapeutic target for gastrointestinal cancers. Pathol Res Pract 2024; 253:154988. [PMID: 38118215 DOI: 10.1016/j.prp.2023.154988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 11/18/2023] [Accepted: 11/27/2023] [Indexed: 12/22/2023]
Abstract
Gastrointestinal (GI) cancers continue to be a major cause of mortality and morbidity globally. Understanding the molecular pathways associated with cancer progression and severity is essential for creating effective cancer treatments. In cancer research, there is a notable emphasis on Enhancer of zeste homolog 2 (EZH2), a key player in gene expression influenced by its irregular expression and capacity to attach to promoters and alter methylation status. This review explores the impact of EZH2 signaling on various GI cancers, such as colorectal, gastric, pancreatic, hepatocellular, esophageal, and cholangiocarcinoma. The primary function of EZH2 signaling is to facilitate the accelerated progression of cancer cells. Additionally, EZH2 has the capacity to modulate the reaction of GI cancers to chemotherapy and radiotherapy. Numerous pathways, including long non-coding RNAs and microRNAs, serve as upstream regulators of EZH2 in these types of cancer. EZH2's enzymatic activity enables it to attach to target gene promoters, resulting in methylation that modifies their expression. EZH2 could be considered as an independent prognostic factor, with increased expression correlating with a worse disease prognosis. Additionally, a range of gene therapies including small interfering RNA, and anti-tumor agents are being explored to target EZH2 for cancer treatment. This comprehensive review underscores the current insights into EZH2 signaling in gastrointestinal cancers and examines the prospect of therapies targeting EZH2 to enhance patient outcomes.
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Affiliation(s)
- Mehrdad Hashemi
- Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Naghmeh Nazdari
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Ghazaleh Gholamiyan
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Mahshid Deldar Abad Paskeh
- Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Ali Moghadas Jafari
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Fateme Nemati
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Elaheh Khodaei
- Department of Dermatology, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Ghazal Abyari
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Nazanin Behdadfar
- Young Researchers and Elite Club, Buinzahra Branch, Islamic Azad University, Buinzahra, Iran
| | - Behnaz Raei
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Rasoul Raesi
- Department of Health Services Management, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medical-Surgical Nursing, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Noushin Nabavi
- Department of Urologic Sciences and Vancouver Prostate Centre, University of British Columbia, V6H3Z6 Vancouver, BC, Canada
| | - Peng Hu
- Department of Emergency, Shanghai Tenth People's Hospital, Tongji University, Shanghai 200072, China
| | - Mohsen Rashidi
- Department Pharmacology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran; The Health of Plant and Livestock Products Research Center, Mazandaran University of Medical Sciences, Sari, Iran.
| | - Afshin Taheriazam
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Orthopedics, Faculty of medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Maliheh Entezari
- Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
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14
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Tian X, Wang T, Shen H, Wang S. Tumor microenvironment, histone modifications, and myeloid-derived suppressor cells. Cytokine Growth Factor Rev 2023; 74:108-121. [PMID: 37598011 DOI: 10.1016/j.cytogfr.2023.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/04/2023] [Accepted: 08/09/2023] [Indexed: 08/21/2023]
Abstract
Myeloid-derived suppressor cells (MDSCs) are important components of the tumor microenvironment (TME), which drive the tumor immune escape by inducing immunosuppression. The expansion and function of MDSCs are tightly associated with signaling pathways induced by molecules from tumor cells, stromal cells, and activated immune cells in the TME. Although these pathways have been well-characterized, the understanding of the epigenetic regulators involved is incomplete. Since histone modifications are the most studied epigenetic changes in MDSCs, we summarize current knowledge on the role of histone modifications in MDSCs within this review. We first discuss the influence of the TME on histone modifications in MDSCs, with an emphasis on histone modifications and modifiers that direct MDSC differentiation and function. Furthermore, we highlight current epigenetic interventions that can reverse MDSC-induced immunosuppression by modulating histone modifications and discuss future research directions to fully appreciate the role of histone modifications in MDSCs.
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Affiliation(s)
- Xinyu Tian
- Department of Laboratory Medicine, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing, China; Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Ting Wang
- Department of Laboratory Medicine, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Han Shen
- Department of Laboratory Medicine, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing, China.
| | - Shengjun Wang
- Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China; Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China.
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15
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Sun Z, Zhang Q, Lv J, Sun Y, Feng Z, Zhang M, Zhang F, Xia C, Gao Y, Zhang Z, Zuo YF, Ren SY. High expression of NOLC1 as an independent prognostic factor for survival in patients with colorectal cancer. J Cancer Res Clin Oncol 2023; 149:15697-15712. [PMID: 37670166 PMCID: PMC10620263 DOI: 10.1007/s00432-023-05297-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 08/14/2023] [Indexed: 09/07/2023]
Abstract
BACKGROUND As a phosphorylated protein, NOLC1 is mainly located in the nucleus and is highly expressed in a variety of tumors, participating in the regulation of cell proliferation and aging. This study further investigated the role of NOLC1 in colorectal cancer tumors, aiming to provide sufficient scientific evidence for the clinical treatment of colorectal cancer. METHODS We used TCGA, GEO, TNMplot, GEPIA, and other databases to explore the expression level of NOLC1 in colorectal cancer patients, as well as the correlation between the clinical characteristics of colorectal cancer patients and their expression, and conducted the prognostic analysis. Immunohistofluorescence (IHF) staining verified the analytical results. Subsequently, KEGG and GO enrichment analysis was used to identify the potential molecular mechanism of NOLC1 promoting the occurrence and development of colorectal cancer. The influence of NOLC1 expression on the immune microenvironment of colorectal cancer patients was further investigated using the TIMER database. GDSC database analysis was used to screen out possible anti-colorectal cancer drugs against NOLC1. Finally, we demonstrated the effect of NOLC1 on the activity and migration of colorectal cancer cells by Edu Cell proliferation assay and Wound Healing assay in vitro. RESULTS Our results suggest that NOLC1 is overexpressed in colorectal cancer, and that overexpression of NOLC1 is associated with relevant clinical features. NOLC1, as an independent risk factor affecting the prognosis of colorectal cancer patients, can lead to a poor prognosis of colorectal cancer. In addition, NOLC1 may be associated with MCM10, HELLS, NOC3L, and other genes through participating in Wnt signaling pathways and jointly regulate the occurrence and development of colorectal cancer under the influence of the tumor microenvironment and many other influencing factors. Related to NOLC1: Selumetinib, Imatinib, and targeted drugs such as Lapatinib have potential value in the clinical application of colorectal cancer. NOLC1 enhances the proliferation and migration of colorectal cancer cells. CONCLUSIONS High expression of NOLC1 as an independent prognostic factor for survival in patients with colorectal cancer. NOLC1 enhances the proliferation and migration of colorectal cancer cells. Further studies and clinical trials are needed to confirm the role of NOLC1 in the development and progression of colorectal cancer.
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Affiliation(s)
- Zhiwei Sun
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China
| | - Qianshi Zhang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China
| | - Jinjuan Lv
- Department of Clinical Biochemistry, College of Laboratory Diagnostic Medicine, Dalian Medical University, Dalian, China
| | - Yuzhu Sun
- Department of Clinical Biochemistry, College of Laboratory Diagnostic Medicine, Dalian Medical University, Dalian, China
| | - Zhen Feng
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China
| | - Mengyan Zhang
- Department of Clinical Biochemistry, College of Laboratory Diagnostic Medicine, Dalian Medical University, Dalian, China
| | - Feifan Zhang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China
| | - Cong Xia
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China
| | - Yina Gao
- Department of Clinical Biochemistry, College of Laboratory Diagnostic Medicine, Dalian Medical University, Dalian, China
| | - Zhenyu Zhang
- Department of Clinical Biochemistry, College of Laboratory Diagnostic Medicine, Dalian Medical University, Dalian, China
| | - Yun-Fei Zuo
- Department of Clinical Biochemistry, College of Laboratory Diagnostic Medicine, Dalian Medical University, Dalian, China.
| | - Shuang-Yi Ren
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China.
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16
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Lv M, Guo S, Zhang X, Zou Y, Chen Q, Zang C, Huang S, Hu Y, Wang Y, Wang Q, Zhong J. Attenuated Salmonella-delivered PD-1 siRNA enhances the antitumor effects of EZH2 inhibitors in colorectal cancer. Int Immunopharmacol 2023; 124:110918. [PMID: 37708707 DOI: 10.1016/j.intimp.2023.110918] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 09/06/2023] [Accepted: 09/06/2023] [Indexed: 09/16/2023]
Abstract
Immunotherapy has made significant progress in the treatment of malignant tumors. However, strategies to combine immunotherapy with anticancer drugs have attracted great attention due to the low response rate and unique toxicity profile of immunotherapies and the subsequent development of acquired resistance in some initial responders. EZH2, a histone methyl transferase subunit of a Polycomb repressor complex,is highly expressed in a variety of tumors, and targeting EZH2 has become a new strategy for tumor therapy and drug combination. Here,we studied the effect of EZH2 inhibitors on colorectal cancer cells and their combination with immunotherapy. Our results demonstrated that EZH2 inhibitors can not only significantly inhibit the survival of colorectal cancer (CRC) cells and induce apoptosis, effectively inhibit cell invasion and migration, but also cause an increase in the expression of PD-L1 receptors on the cell surface. To determine the effect of EZH2 in combination with immunotherapy, we combine EZH2 inhibitors with PD-1 siRNA delivered by attenuated Salmonella. The vivo experiments have shown that the combination of EZH2 inhibitors and Salmonella-delivered PD-1 siRNA can further inhibit the development of CRC, trigger effective anti-tumor immunity, and improve therapeutic efficacy. Its underlying mechanisms mainly involve synergistic immunomodulation and apoptosis. This study suggests an emerging strategy based on a combination of EZH2 inhibitor and immunotherapy based on PD-1 inhibition.
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Affiliation(s)
- Mengmeng Lv
- Department of Pathology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China; Department of Pathology, Xinxiang Medical University, Xinxiang, Henan, China
| | - Sheng Guo
- Institute of Precision Medicine, Xinxiang Medical University, Xinxiang, Henan, China, Xinxiang Key Laboratory of Tumor Vaccine and Immunotherapy, Xinxiang Medical University, Xinxiang, Henan, China
| | - Xinyu Zhang
- Department of Pathology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China; Department of Pathology, Xinxiang Medical University, Xinxiang, Henan, China
| | - Yan Zou
- Department of Pathology, Xinxiang Medical University, Xinxiang, Henan, China
| | - Qiang Chen
- Department of Pathology, Xinxiang Medical University, Xinxiang, Henan, China
| | - Chongyi Zang
- Department of Pathology, Xinxiang Medical University, Xinxiang, Henan, China
| | - Shuo Huang
- Department of Pathology, Xinxiang Medical University, Xinxiang, Henan, China
| | - Yuhan Hu
- Department of Pathology, Xinxiang Medical University, Xinxiang, Henan, China
| | - Yanling Wang
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China.
| | - Qianqing Wang
- Department of Gynecology, Xinxiang Central Hospital, The Fourth Clinical College of Xinxiang Medical University, Xinxiang, Henan, China.
| | - Jiateng Zhong
- Department of Pathology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China; Department of Pathology, Xinxiang Medical University, Xinxiang, Henan, China; Department of Gynecology, Xinxiang Central Hospital, The Fourth Clinical College of Xinxiang Medical University, Xinxiang, Henan, China.
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Gao M, Li Y, Cao P, Liu H, Chen J, Kang S. Exploring the therapeutic potential of targeting polycomb repressive complex 2 in lung cancer. Front Oncol 2023; 13:1216289. [PMID: 37909018 PMCID: PMC10613995 DOI: 10.3389/fonc.2023.1216289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 10/02/2023] [Indexed: 11/02/2023] Open
Abstract
The pathogenesis of lung cancer (LC) is a multifaceted process that is influenced by a variety of factors. Alongside genetic mutations and environmental influences, there is increasing evidence that epigenetic mechanisms play a significant role in the development and progression of LC. The Polycomb repressive complex 2 (PRC2), composed of EZH1/2, SUZ12, and EED, is an epigenetic silencer that controls the expression of target genes and is crucial for cell identity in multicellular organisms. Abnormal expression of PRC2 has been shown to contribute to the progression of LC through several pathways. Although targeted inhibition of EZH2 has demonstrated potential in delaying the progression of LC and improving chemotherapy sensitivity, the effectiveness of enzymatic inhibitors of PRC2 in LC is limited, and a more comprehensive understanding of PRC2's role is necessary. This paper reviews the core subunits of PRC2 and their interactions, and outlines the mechanisms of aberrant PRC2 expression in cancer and its role in tumor immunity. We also summarize the important role of PRC2 in regulating biological behaviors such as epithelial mesenchymal transition, invasive metastasis, apoptosis, cell cycle regulation, autophagy, and PRC2-mediated resistance to LC chemotherapeutic agents in LC cells. Lastly, we explored the latest breakthroughs in the research and evaluation of medications that target PRC2, as well as the latest findings from clinical studies investigating the efficacy of these drugs in the treatment of various human cancers.
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Affiliation(s)
- Min Gao
- Department of Thoracic Surgery, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
- Inner Mongolia Medical University, First Clinical Medical College, Hohhot, China
| | - Yongwen Li
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Peijun Cao
- Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Hongyu Liu
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Jun Chen
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China
- Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Shirong Kang
- Department of Thoracic Surgery, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
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Yu F, Li L, Zhang M, Sun S. Phosphorylation of EZH2 differs HER2-positive breast cancer invasiveness in a site-specific manner. BMC Cancer 2023; 23:948. [PMID: 37803297 PMCID: PMC10557267 DOI: 10.1186/s12885-023-11450-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 09/26/2023] [Indexed: 10/08/2023] Open
Abstract
HER2-positive breast cancer (BC) invasiveness and drug-resistance issue is the critical treatment obstacle recently. We investigated the total and phosphorylated status EZH2 expression in database and BC tissue microarray. We demonstrated for the first time that EZH2 is distributed both in cytoplasm and nucleus of breast cancer cells in a phosphorylation site-specific manner. High expressed-EZH2 cases more frequently had an advanced clinical stage (lymph node metastasis) and aggressive features than EZH2-low cases, potentially indicating the high risk of HER2-positive BC (p < 0.05). Notably, highly expressed phosphorylated EZH2 is differently located in cytoplasm or nucleus in a site-specific manner in breast cancer cells. Nucleus-located pEZH2-S21 is expressed in invasive and lymph node metastatic HER2-positive BC cases (p = 0.144, p = 0.001). Cytoplasmic pEZH2-T487 is correlated with HER2 positive status (p = 0.014).In conclusion, high expression of nucleus-located EZH2 might be a predictor of invasive BC. Activation of phosphorylated EZH2-S21 site in nucleus would be a potential predictor of HER2-positve BC and poor efficacy of HER2-target therapy. These results point to a PRC2-independent non-epigenetic mechanism and therapeutic strategy of EZH2 in HER2-positive BC.
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Affiliation(s)
- Feng Yu
- Department of Colorectal Surgery and Oncology, Key Laboratory of Cancer Prevention and Intervention, The Second Affiliated Hospital, Ministry of Education, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Cancer Institute, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Lili Li
- Department of Medical Oncology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Mengwen Zhang
- Department of Plastic Surgery, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Shanshan Sun
- Department of Breast Surgery, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.
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19
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Hu Y, Zhang X, Li Q, Zhou Q, Fang D, Lu Y. An immune and epigenetics-related scoring model and drug candidate prediction for hepatic carcinogenesis via dynamic network biomarker analysis and connectivity mapping. Comput Struct Biotechnol J 2023; 21:4619-4633. [PMID: 37817777 PMCID: PMC10561057 DOI: 10.1016/j.csbj.2023.09.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/18/2023] [Accepted: 09/24/2023] [Indexed: 10/12/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is a malignant tumor with high mortality. This study aimed to build a prognostic signature for HCC patients based on immune-related genes (IRGs) and epigenetics-related genes (EPGs). RNA-seq data from Gene Expression Omnibus were used for dynamic network biomarker (DNB) analysis to identify 56 candidate IRG-EPG-DNBs and their first-neighbor genes. These genes were screened using LASSO-Cox regression analysis to finally obtain five candidate genes-RNF2, YBX1, EZH2, CAD, and PSMD1-which constituted the prognostic signature panel. According to this panel, patients in The Cancer Genome Atlas and International Cancer Genome Consortium were divided into high- and low-risk groups. The prognosis, clinicopathological features, and immune cell infiltration significantly differed between the two risk groups. The prognostic ability of the signature panel and expression profiling were further validated using online databases. We used an independent cohort of patients to validate the expression profiles of the five genes using reverse transcription-PCR. CMap and CellMiner predicted four small molecule drug-protein pairs based on the five prognostic genes. Of them, two market drugs approved by the Food and Drug Administration (AT-13387 and KU-55933) have emerged as candidates for HCC study. This new signature panel may serve as a potential prognostic marker, engendering the possibility of novel personalized therapy with classification of HCC patients.
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Affiliation(s)
- Yuting Hu
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Xingli Zhang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Qingya Li
- Henan University of Chinese Medicine, Henan 450046, China
| | - Qianmei Zhou
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Dongdong Fang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yiyu Lu
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
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20
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Xie Z, Zhou Z, Yang S, Zhang S, Shao B. Epigenetic regulation and therapeutic targets in the tumor microenvironment. MOLECULAR BIOMEDICINE 2023; 4:17. [PMID: 37273004 DOI: 10.1186/s43556-023-00126-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 04/02/2023] [Indexed: 06/06/2023] Open
Abstract
The tumor microenvironment (TME) is crucial to neoplastic processes, fostering proliferation, angiogenesis and metastasis. Epigenetic regulations, primarily including DNA and RNA methylation, histone modification and non-coding RNA, have been generally recognized as an essential feature of tumor malignancy, exceedingly contributing to the dysregulation of the core gene expression in neoplastic cells, bringing about the evasion of immunosurveillance by influencing the immune cells in TME. Recently, compelling evidence have highlighted that clinical therapeutic approaches based on epigenetic machinery modulate carcinogenesis through targeting TME components, including normalizing cells' phenotype, suppressing cells' neovascularization and repressing the immunosuppressive components in TME. Therefore, TME components have been nominated as a promising target for epigenetic drugs in clinical cancer management. This review focuses on the mechanisms of epigenetic modifications occurring to the pivotal TME components including the stroma, immune and myeloid cells in various tumors reported in the last five years, concludes the tight correlation between TME reprogramming and tumor progression and immunosuppression, summarizes the current advances in cancer clinical treatments and potential therapeutic targets with reference to epigenetic drugs. Finally, we summarize some of the restrictions in the field of cancer research at the moment, further discuss several interesting epigenetic gene targets with potential strategies to boost antitumor immunity.
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Affiliation(s)
- Zhuojun Xie
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Renmin Road, Sichuan, 610041, Chengdu, China
| | - Zirui Zhou
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Renmin Road, Sichuan, 610041, Chengdu, China
| | - Shuxian Yang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Renmin Road, Sichuan, 610041, Chengdu, China
| | - Shiwen Zhang
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Renmin Road, Sichuan, 610041, Chengdu, China.
| | - Bin Shao
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Renmin Road, Sichuan, 610041, Chengdu, China.
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21
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Damhofer H, Helin K. EZH2i unlocks PDAC immune surveillance. NATURE CANCER 2023; 4:781-783. [PMID: 37369835 DOI: 10.1038/s43018-023-00562-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
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22
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Wozniak M, Czyz M. lncRNAs-EZH2 interaction as promising therapeutic target in cutaneous melanoma. Front Mol Biosci 2023; 10:1170026. [PMID: 37325482 PMCID: PMC10265524 DOI: 10.3389/fmolb.2023.1170026] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 05/23/2023] [Indexed: 06/17/2023] Open
Abstract
Melanoma is the most lethal skin cancer with increasing incidence worldwide. Despite a great improvement of diagnostics and treatment of melanoma patients, this disease is still a serious clinical problem. Therefore, novel druggable targets are in focus of research. EZH2 is a component of the PRC2 protein complex that mediates epigenetic silencing of target genes. Several mutations activating EZH2 have been identified in melanoma, which contributes to aberrant gene silencing during tumor progression. Emerging evidence indicates that long non-coding RNAs (lncRNAs) are molecular "address codes" for EZH2 silencing specificity, and targeting lncRNAs-EZH2 interaction may slow down the progression of many solid cancers, including melanoma. This review summarizes current knowledge regarding the involvement of lncRNAs in EZH2-mediated gene silencing in melanoma. The possibility of blocking lncRNAs-EZH2 interaction in melanoma as a novel therapeutic option and plausible controversies and drawbacks of this approach are also briefly discussed.
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Affiliation(s)
- Michal Wozniak
- Department of Molecular Biology of Cancer, Medical University of Lodz, Lodz, Poland
| | - Malgorzata Czyz
- Department of Molecular Biology of Cancer, Medical University of Lodz, Lodz, Poland
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23
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Säisä-Borreill S, Davidson G, Kleiber T, Thevenot A, Martin E, Mondot S, Blottière H, Helleux A, Mengus G, Plateroti M, Duluc I, Davidson I, Freund JN. General transcription factor TAF4 antagonizes epigenetic silencing by Polycomb to maintain intestine stem cell functions. Cell Death Differ 2023; 30:839-853. [PMID: 36639541 PMCID: PMC9984434 DOI: 10.1038/s41418-022-01109-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 12/15/2022] [Accepted: 12/21/2022] [Indexed: 01/15/2023] Open
Abstract
Taf4 (TATA-box binding protein-associated factor 4) is a subunit of the general transcription factor TFIID, a component of the RNA polymerase II pre-initiation complex that interacts with tissue-specific transcription factors to regulate gene expression. Properly regulated gene expression is particularly important in the intestinal epithelium that is constantly renewed from stem cells. Tissue-specific inactivation of Taf4 in murine intestinal epithelium during embryogenesis compromised gut morphogenesis and the emergence of adult-type stem cells. In adults, Taf4 loss impacted the stem cell compartment and associated Paneth cells in the stem cell niche, epithelial turnover and differentiation of mature cells, thus exacerbating the response to inflammatory challenge. Taf4 inactivation ex vivo in enteroids prevented budding formation and maintenance and caused broad chromatin remodeling and a strong reduction in the numbers of stem and progenitor cells with a concomitant increase in an undifferentiated cell population that displayed high activity of the Ezh2 and Suz12 components of Polycomb Repressive Complex 2 (PRC2). Treatment of Taf4-mutant enteroids with a specific Ezh2 inhibitor restored buddings, cell proliferation and the stem/progenitor compartment. Taf4 loss also led to increased PRC2 activity in cells of adult crypts associated with modification of the immune/inflammatory microenvironment that potentiated Apc-driven tumorigenesis. Our results reveal a novel function of Taf4 in antagonizing PRC2-mediated repression of the stem cell gene expression program to assure normal development, homeostasis, and immune-microenvironment of the intestinal epithelium.
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Affiliation(s)
- Susanna Säisä-Borreill
- University of Strasbourg, Inserm, UMR-S1113/IRFAC, FHU ARRIMAGE, FMTS, 67200, Strasbourg, France
| | - Guillaume Davidson
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Department of Functional Genomics and Cancer, CNRS/Inserm/University of Strasbourg, 1 Rue Laurent Fries, 67404, Illkirch Cédex, France
| | - Thomas Kleiber
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Department of Functional Genomics and Cancer, CNRS/Inserm/University of Strasbourg, 1 Rue Laurent Fries, 67404, Illkirch Cédex, France
- Orphazyme, Ole Maaloes 3, 2200, Copenhagen, Denmark
| | - Andréa Thevenot
- University of Strasbourg, Inserm, UMR-S1113/IRFAC, FHU ARRIMAGE, FMTS, 67200, Strasbourg, France
| | - Elisabeth Martin
- University of Strasbourg, Inserm, UMR-S1113/IRFAC, FHU ARRIMAGE, FMTS, 67200, Strasbourg, France
| | - Stanislas Mondot
- University Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, 78350, Jouy-en-Josas, France
| | - Hervé Blottière
- University Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, 78350, Jouy-en-Josas, France
| | - Alexandra Helleux
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Department of Functional Genomics and Cancer, CNRS/Inserm/University of Strasbourg, 1 Rue Laurent Fries, 67404, Illkirch Cédex, France
| | - Gabrielle Mengus
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Department of Functional Genomics and Cancer, CNRS/Inserm/University of Strasbourg, 1 Rue Laurent Fries, 67404, Illkirch Cédex, France
| | - Michelina Plateroti
- University of Strasbourg, Inserm, UMR-S1113/IRFAC, FHU ARRIMAGE, FMTS, 67200, Strasbourg, France
| | - Isabelle Duluc
- University of Strasbourg, Inserm, UMR-S1113/IRFAC, FHU ARRIMAGE, FMTS, 67200, Strasbourg, France
| | - Irwin Davidson
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Department of Functional Genomics and Cancer, CNRS/Inserm/University of Strasbourg, 1 Rue Laurent Fries, 67404, Illkirch Cédex, France
| | - Jean-Noel Freund
- University of Strasbourg, Inserm, UMR-S1113/IRFAC, FHU ARRIMAGE, FMTS, 67200, Strasbourg, France.
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Benefits and Challenges of Inhibiting EZH2 in Malignant Pleural Mesothelioma. Cancers (Basel) 2023; 15:cancers15051537. [PMID: 36900330 PMCID: PMC10000483 DOI: 10.3390/cancers15051537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/25/2023] [Accepted: 02/26/2023] [Indexed: 03/04/2023] Open
Abstract
Malignant pleural mesothelioma (MPM) is an aggressive thoracic cancer that is mainly associated with prior exposure to asbestos fibers. Despite being a rare cancer, its global rate is increasing and the prognosis remains extremely poor. Over the last two decades, despite the constant research of new therapeutic options, the combination chemotherapy with cisplatin and pemetrexed has remained the only first-line therapy for MPM. The recent approval of immune checkpoint blockade (ICB)-based immunotherapy has opened new promising avenues of research. However, MPM is still a fatal cancer with no effective treatments. Enhancer of zeste homolog 2 (EZH2) is a histone methyl transferase that exerts pro-oncogenic and immunomodulatory activities in a variety of tumors. Accordingly, a growing number of studies indicate that EZH2 is also an oncogenic driver in MPM, but its effects on tumor microenvironments are still largely unexplored. This review describes the state-of-the-art of EZH2 in MPM biology and discusses its potential use both as a diagnostic and therapeutic target. We highlight current gaps of knowledge, the filling of which will likely favor the entry of EZH2 inhibitors within the treatment options for MPM patients.
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25
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EZH2: An Accomplice of Gastric Cancer. Cancers (Basel) 2023; 15:cancers15020425. [PMID: 36672374 PMCID: PMC9856299 DOI: 10.3390/cancers15020425] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/30/2022] [Accepted: 01/05/2023] [Indexed: 01/10/2023] Open
Abstract
Gastric cancer is the fifth most common cancer and the third leading cause of cancer deaths worldwide. Understanding the factors influencing the therapeutic effects in gastric cancer patients and the molecular mechanism behind gastric cancer is still facing challenges. In addition to genetic alterations and environmental factors, it has been demonstrated that epigenetic mechanisms can also induce the occurrence and progression of gastric cancer. Enhancer of zeste homolog 2 (EZH2) is the catalytic subunit of the polycomb repressor complex 2 (PRC2), which trimethylates histone 3 at Lys-27 and regulates the expression of downstream target genes through epigenetic mechanisms. It has been found that EZH2 is overexpressed in the stomach, which promotes the progression of gastric cancer through multiple pathways. In addition, targeted inhibition of EZH2 expression can effectively delay the progression of gastric cancer and improve its resistance to chemotherapeutic agents. Given the many effects of EZH2 in gastric cancer, there are no studies to comprehensively describe this mechanism. Therefore, in this review, we first introduce EZH2 and clarify the mechanisms of abnormal expression of EZH2 in cancer. Secondly, we summarize the role of EZH2 in gastric cancer, which includes the association of the EZH2 gene with genetic susceptibility to GC, the correlation of the EZH2 gene with gastric carcinogenesis and invasive metastasis, the resistance to chemotherapeutic drugs of gastric cancer mediated by EZH2 and the high expression of EZH2 leading to poor prognosis of gastric cancer patients. Finally, we also clarify some of the current statuses of drug development regarding targeted inhibition of EZH2/PRC2 activity.
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26
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Keam SJ. Valemetostat Tosilate: First Approval. Drugs 2022; 82:1621-1627. [DOI: 10.1007/s40265-022-01800-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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Wang YF, Yu L, Hu ZL, Fang YF, Shen YY, Song MF, Chen Y. Regulation of CCL2 by EZH2 affects tumor-associated macrophages polarization and infiltration in breast cancer. Cell Death Dis 2022; 13:748. [PMID: 36038549 PMCID: PMC9424193 DOI: 10.1038/s41419-022-05169-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 01/21/2023]
Abstract
Tumor associated macrophages (TAMs) play an important role in tumorigenesis, development and anti-cancer drug therapy. However, very few epigenetic compounds have been elucidated to affect tumor growth by educating TAMs in the tumor microenvironment (TME). Herein, we identified that EZH2 performs a crucial role in the regulation of TAMs infiltration and protumoral polarization by interacting with human breast cancer (BC) cells. We showed that EZH2 inhibitors-treated BC cells induced M2 macrophage polarization in vitro and in vivo, while EZH2 knockdown exhibited the opposite effect. Mechanistically, inhibition of EZH2 histone methyltransferase alone by EZH2 inhibitors in breast cancer cells could reduce the enrichment of H3K27me3 on CCL2 gene promoter, elevate CCL2 transcription and secretion, contributing to the induction of M2 macrophage polarization and recruitment in TME, which reveal a potential explanation behind the frustrating results of EZH2 inhibitors against breast cancer. On the contrary, EZH2 depletion led to DNA demethylation and subsequent upregulation of miR-124-3p level, which inhibited its target CCL2 expression in the tumor cells, causing arrest of TAMs M2 polarization. Taken together, these data suggested that EZH2 can exert opposite regulatory effects on TAMs polarization through its enzymatic or non-enzymatic activities. Our results also imply that the effect of antitumor drugs on TAMs may affect its therapeutic efficacy, and the combined application with TAMs modifiers should be warranted to achieve great clinical success.
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Affiliation(s)
- Ya-fang Wang
- grid.9227.e0000000119573309Division of Anti-Tumor Pharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, PR China ,grid.440637.20000 0004 4657 8879Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai, PR China
| | - Lei Yu
- grid.9227.e0000000119573309Division of Anti-Tumor Pharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, PR China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, Beijing, China
| | - Zong-long Hu
- grid.9227.e0000000119573309Division of Anti-Tumor Pharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, PR China
| | - Yan-fen Fang
- grid.9227.e0000000119573309Division of Anti-Tumor Pharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, PR China
| | - Yan-yan Shen
- grid.9227.e0000000119573309Division of Anti-Tumor Pharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, PR China
| | - Min-fang Song
- grid.440637.20000 0004 4657 8879School of Life Science and Technology, ShanghaiTech University, Shanghai, PR China
| | - Yi Chen
- grid.9227.e0000000119573309Division of Anti-Tumor Pharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, PR China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, Beijing, China
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Wu L, Su C, Yang C, Liu J, Ye Y. TBX3 regulates the transcription of VEGFA to promote osteoblasts proliferation and microvascular regeneration. PeerJ 2022; 10:e13722. [PMID: 35846885 PMCID: PMC9281600 DOI: 10.7717/peerj.13722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 06/22/2022] [Indexed: 01/17/2023] Open
Abstract
Objective Osteochondral decellularization can promote local vascular regeneration, but the exact mechanism is unknown. The aim of this study is to study osteogenic microvascular regeneration in single cells. Methods The scRNA-seq dataset of human periosteal-derived cells (hPDCs) were analyzed by pySCENIC. To examine the role of TBX3 in osteogenesis and vascularization, cell transfection, qRT-PCR, western blot, and CCK-8 cell proliferation assays were performed. Results TCF7L2, TBX3, FLI1, NFKB2, and EZH2 were found to be transcription factors (TFs) most closely associated with corresponding cells. The regulatory network of these TFs was then visualized. Our study knocked down the expression of TBX3 in human osteoblast cell lines. In the TBX3 knockdown group, we observed decreased expression of VEGFA, VEGFB, and VEGFC. Moreover, Western blot analysis showed that downregulating TBX3 resulted in a reduction of VEGFA expression. And TBX3 stimulated osteoblast proliferation in CCK-8 assays. Conclusion TBX3 regulates VEGFA expression and promotes osteoblast proliferation in skeletal microvasculature formation. The findings provide a theoretical basis for investigating the role of TBX3 in promoting local vascular regeneration.
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Affiliation(s)
- Lichuang Wu
- Department of Trauma/Joint Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Chenxian Su
- Department of Trauma/Joint Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Chuanhua Yang
- The Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Shandong, China
| | - Jinxing Liu
- Shanghai ninth people’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yiheng Ye
- Department of Trauma/Joint Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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29
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Chen Z, Lin X, Wan Z, Xiao M, Ding C, Wan P, Li Q, Zheng S. High Expression of EZH2 Mediated by ncRNAs Correlates with Poor Prognosis and Tumor Immune Infiltration of Hepatocellular Carcinoma. Genes (Basel) 2022; 13:genes13050876. [PMID: 35627262 PMCID: PMC9141487 DOI: 10.3390/genes13050876] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/24/2022] [Accepted: 05/10/2022] [Indexed: 02/06/2023] Open
Abstract
Background: Hepatocellular carcinoma (HCC) is the predominant form of liver cancer and is accompanied by a complex regulatory network. Increasing evidence suggests that an abnormal gene expression of EZH2 is associated with HCC progression. However, the molecular mechanism by which non-coding RNAs (ncRNAs) regulate EZH2 remains elusive. Methods: The Cancer Genome Atlas (TCGA) and Genotype-Tissue Expression (GTEx) data were used to perform differential expression analysis and prognostic analysis. We used the Encyclopedia of RNA Interactomes (ENCORI) database to predict candidate miRNAs and lncRNAs that may bind to EZH2. Subsequently, the comprehensive analysis (including expression analysis, correlation analysis, and survival analysis) identified ncRNAs that contribute to EZH2 overexpression. Results: EZH2 was found to be upregulated in the majority of tumor types and associated with a poor prognosis. Hsa-miR-101-3p was identified as a target miRNA of EZH2. Additionally, SNHG6 and MALAT1 were identified as upstream lncRNAs of hsa-miR-101-3p. Meanwhile, correlation analysis revealed that EZH2 expression was significantly associated with the infiltration of several immune cell types in HCC. Conclusion: SNHG6 or MALAT1/hsa-miR-101-3p/EZH2 axis were identified as potential regulatory pathways in the progression of HCC.
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Affiliation(s)
- Zhitao Chen
- Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University Shulan International Medical College, Hangzhou 310004, China; (Z.C.); (X.L.); (Z.W.); (M.X.); (C.D.); (P.W.)
| | - Xin Lin
- Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University Shulan International Medical College, Hangzhou 310004, China; (Z.C.); (X.L.); (Z.W.); (M.X.); (C.D.); (P.W.)
- School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Zhenmiao Wan
- Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University Shulan International Medical College, Hangzhou 310004, China; (Z.C.); (X.L.); (Z.W.); (M.X.); (C.D.); (P.W.)
- School of Medicine, Zhejiang Chinese Medical University Zhejiang Shuren College, Hangzhou 310003, China
| | - Min Xiao
- Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University Shulan International Medical College, Hangzhou 310004, China; (Z.C.); (X.L.); (Z.W.); (M.X.); (C.D.); (P.W.)
| | - Chenchen Ding
- Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University Shulan International Medical College, Hangzhou 310004, China; (Z.C.); (X.L.); (Z.W.); (M.X.); (C.D.); (P.W.)
| | - Pengxia Wan
- Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University Shulan International Medical College, Hangzhou 310004, China; (Z.C.); (X.L.); (Z.W.); (M.X.); (C.D.); (P.W.)
| | - Qiyong Li
- Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University Shulan International Medical College, Hangzhou 310004, China; (Z.C.); (X.L.); (Z.W.); (M.X.); (C.D.); (P.W.)
- Correspondence: (Q.L.); (S.Z.); Tel.: +86-0571-56757021 (S.Z.)
| | - Shusen Zheng
- Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University Shulan International Medical College, Hangzhou 310004, China; (Z.C.); (X.L.); (Z.W.); (M.X.); (C.D.); (P.W.)
- School of Medicine, Zhejiang University, Hangzhou 310003, China
- Correspondence: (Q.L.); (S.Z.); Tel.: +86-0571-56757021 (S.Z.)
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30
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Sabnis RW. Novel Quinoline Compounds as EZH2 Inhibitors for Treating Cancer. ACS Med Chem Lett 2022; 13:755-756. [PMID: 35586442 PMCID: PMC9109473 DOI: 10.1021/acsmedchemlett.2c00139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Indexed: 01/08/2023] Open
Affiliation(s)
- Ram W. Sabnis
- Smith, Gambrell & Russell LLP, 1105 West Peachtree Street NE, Suite 1000, Atlanta, Georgia 30309, United States
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