1
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Arroyo M, Casas-Delucchi CS, Pabba MK, Prorok P, Pradhan SK, Rausch C, Lehmkuhl A, Maiser A, Buschbeck M, Pasque V, Bernstein E, Luck K, Cardoso MC. Histone variant macroH2A1 regulates synchronous firing of replication origins in the inactive X chromosome. Nucleic Acids Res 2024:gkae734. [PMID: 39189450 DOI: 10.1093/nar/gkae734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 08/07/2024] [Accepted: 08/14/2024] [Indexed: 08/28/2024] Open
Abstract
MacroH2A has been linked to transcriptional silencing, cell identity, and is a hallmark of the inactive X chromosome (Xi). However, it remains unclear whether macroH2A plays a role in DNA replication. Using knockdown/knockout cells for each macroH2A isoform, we show that macroH2A-containing nucleosomes slow down replication progression rate in the Xi reflecting the higher nucleosome stability. Moreover, macroH2A1, but not macroH2A2, regulates the number of nano replication foci in the Xi, and macroH2A1 downregulation increases DNA loop sizes corresponding to replicons. This relates to macroH2A1 regulating replicative helicase loading during G1 by interacting with it. We mapped this interaction to a phenylalanine in macroH2A1 that is not conserved in macroH2A2 and the C-terminus of Mcm3 helicase subunit. We propose that macroH2A1 enhances the licensing of pre-replication complexes via DNA helicase interaction and loading onto the Xi.
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Affiliation(s)
- Maria Arroyo
- Cell Biology and Epigenetics, Department of Biology, Technical University of Darmstadt, 64287 Darmstadt, Germany
| | - Corella S Casas-Delucchi
- Cell Biology and Epigenetics, Department of Biology, Technical University of Darmstadt, 64287 Darmstadt, Germany
| | - Maruthi K Pabba
- Cell Biology and Epigenetics, Department of Biology, Technical University of Darmstadt, 64287 Darmstadt, Germany
| | - Paulina Prorok
- Cell Biology and Epigenetics, Department of Biology, Technical University of Darmstadt, 64287 Darmstadt, Germany
| | - Sunil K Pradhan
- Cell Biology and Epigenetics, Department of Biology, Technical University of Darmstadt, 64287 Darmstadt, Germany
| | - Cathia Rausch
- Cell Biology and Epigenetics, Department of Biology, Technical University of Darmstadt, 64287 Darmstadt, Germany
| | - Anne Lehmkuhl
- Cell Biology and Epigenetics, Department of Biology, Technical University of Darmstadt, 64287 Darmstadt, Germany
| | - Andreas Maiser
- Faculty of Biology and Center for Molecular Biosystems (BioSysM), Human Biology and BioImaging, LMU Munich, Munich 81377, Germany
| | - Marcus Buschbeck
- Program of Myeloid Neoplasms, Program of Applied Epigenetics, Josep Carreras Leukaemia Research Institute (IJC), Germans Trias i Pujol Research Institute (IGTP), Campus Can Ruti, Camí de les Escoles, 08916 Badalona, Barcelona, Spain
| | - Vincent Pasque
- Department of Development and Regeneration, Leuven Stem Cell Institute, Leuven Institute for Single-Cell Omics (LISCO), KU Leuven-University of Leuven, 3000 Leuven, Belgium
| | - Emily Bernstein
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, Tisch Cancer Institute, NY, NY 10029, USA
| | - Katja Luck
- Institute of Molecular Biology (IMB) gGmbH, 55128 Mainz, Germany
| | - M Cristina Cardoso
- Cell Biology and Epigenetics, Department of Biology, Technical University of Darmstadt, 64287 Darmstadt, Germany
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2
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Ji D, Xiao X, Luo A, Fan X, Ma J, Wang D, Xia M, Ma L, Wang PY, Li W, Chen P. FACT mediates the depletion of macroH2A1.2 to expedite gene transcription. Mol Cell 2024; 84:3011-3025.e7. [PMID: 39116874 DOI: 10.1016/j.molcel.2024.07.011] [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: 01/02/2024] [Revised: 06/07/2024] [Accepted: 07/12/2024] [Indexed: 08/10/2024]
Abstract
The histone variant macroH2A is generally linked to transcriptionally inactive chromatin, but how macroH2A regulates chromatin structure and functions in the transcriptional process remains elusive. This study reveals that while the integration of human macroH2A1.2 into nucleosomes does not affect their stability or folding dynamics, it notably hinders the maintenance of facilitates chromatin transcription's (FACT's) function. We show that FACT effectively diminishes the stability of macroH2A1.2-nucleosomes and expedites their depletion subsequent to the initial unfolding process. Furthermore, we identify the residue S139 in macroH2A1.2 as a critical switch to modulate FACT's function in nucleosome maintenance. Genome-wide analyses demonstrate that FACT-mediated depletion of macroH2A-nucleosomes allows the correct localization of macroH2A, while the S139 mutation reshapes macroH2A distribution and influences stimulation-induced transcription and cellular response in macrophages. Our findings provide mechanistic insights into the intricate interplay between macroH2A and FACT at the nucleosome level and elucidate their collective role in transcriptional regulation and immune response of macrophages.
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Affiliation(s)
- Dengyu Ji
- Department of Immunology, School of Basic Medical Sciences, Beijing Key Laboratory for Tumor Invasion and Metastasis, Capital Medical University, Beijing 100069, China; Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Xue Xiao
- National Laboratory of Biomacromolecules and Key Laboratory of Epigenetic Regulation and Intervention, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Anfeng Luo
- Department of Immunology, School of Basic Medical Sciences, Beijing Key Laboratory for Tumor Invasion and Metastasis, Capital Medical University, Beijing 100069, China
| | - Xiongxiong Fan
- Department of Immunology, School of Basic Medical Sciences, Beijing Key Laboratory for Tumor Invasion and Metastasis, Capital Medical University, Beijing 100069, China
| | - Jingzhe Ma
- Department of Immunology, School of Basic Medical Sciences, Beijing Key Laboratory for Tumor Invasion and Metastasis, Capital Medical University, Beijing 100069, China
| | - Dayi Wang
- Department of Immunology, School of Basic Medical Sciences, Beijing Key Laboratory for Tumor Invasion and Metastasis, Capital Medical University, Beijing 100069, China
| | - Miaoran Xia
- Department of Immunology, School of Basic Medical Sciences, Beijing Key Laboratory for Tumor Invasion and Metastasis, Capital Medical University, Beijing 100069, China
| | - Lu Ma
- National Laboratory for Condensed Matter Physics and Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Peng-Ye Wang
- National Laboratory for Condensed Matter Physics and Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Wei Li
- National Laboratory of Biomacromolecules and Key Laboratory of Epigenetic Regulation and Intervention, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
| | - Ping Chen
- Department of Immunology, School of Basic Medical Sciences, Beijing Key Laboratory for Tumor Invasion and Metastasis, Capital Medical University, Beijing 100069, China; Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China.
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3
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Meers O, Buschbeck M. A FACT about macroH2A removal in immune gene activation. Mol Cell 2024; 84:3001-3002. [PMID: 39178834 DOI: 10.1016/j.molcel.2024.07.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2024] [Revised: 07/25/2024] [Accepted: 07/25/2024] [Indexed: 08/26/2024]
Abstract
Histone variants contribute to epigenetic regulation in development and disease but require the chaperone machinery for correct deposition. In this issue of Molecular Cell, Ji et al.1 explain how the chaperone complex FACT removes the histone variant macroH2A1.2 and demonstrate its importance for gene activation in innate immune cells.
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Affiliation(s)
- Oliver Meers
- Program of Applied Epigenetics, Program of Myeloid Neoplasms, Josep Carreras Leukaemia Research Institute (IJC), Campus Can Ruti, Badalona, Spain; Doctoral Program in Biomedicine, Universitat de Barcelona, Facultat de Farmàcia i Ciències de l'Alimentació, 08028 Barcelona, Spain
| | - Marcus Buschbeck
- Program of Applied Epigenetics, Program of Myeloid Neoplasms, Josep Carreras Leukaemia Research Institute (IJC), Campus Can Ruti, Badalona, Spain; Germans Trias i Pujol Research Institute (IGTP), Badalona, Spain.
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4
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Wong LH, Tremethick DJ. Multifunctional histone variants in genome function. Nat Rev Genet 2024:10.1038/s41576-024-00759-1. [PMID: 39138293 DOI: 10.1038/s41576-024-00759-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2024] [Indexed: 08/15/2024]
Abstract
Histones are integral components of eukaryotic chromatin that have a pivotal role in the organization and function of the genome. The dynamic regulation of chromatin involves the incorporation of histone variants, which can dramatically alter its structural and functional properties. Contrary to an earlier view that limited individual histone variants to specific genomic functions, new insights have revealed that histone variants exert multifaceted roles involving all aspects of genome function, from governing patterns of gene expression at precise genomic loci to participating in genome replication, repair and maintenance. This conceptual change has led to a new understanding of the intricate interplay between chromatin and DNA-dependent processes and how this connection translates into normal and abnormal cellular functions.
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Affiliation(s)
- Lee H Wong
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - David J Tremethick
- The John Curtin School of Medical Research, The Australian National University, Canberra, Australian Capial Territory, Australia.
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5
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Liao Q, Shi H, Yang J, Ge S, Jia R, Song X, Chai P, Jia R. FTO elicits tumor neovascularization in cancer-associated fibroblasts through eliminating m 6A modifications of multiple pro-angiogenic factors. Cancer Lett 2024; 592:216911. [PMID: 38685450 DOI: 10.1016/j.canlet.2024.216911] [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: 12/18/2023] [Revised: 03/25/2024] [Accepted: 04/22/2024] [Indexed: 05/02/2024]
Abstract
Cancer-associated fibroblasts (CAFs) exhibit notable versatility, plasticity, and robustness, actively participating in cancer progression through intricate interactions within the tumor microenvironment (TME). N6-methyladenosine (m6A) modification is the most prevalent modification in eukaryotic mRNA, playing essential roles in mRNA metabolism and various biological processes. Howbeit, the precise involvement of m6A in CAF activation remains enigmatic. In this study, we revealed that the m6A demethylase FTO supports CAF-mediated angiogenesis through activation of EGR1 and VEGFA in conjunctival melanoma (CoM). First, single-cell transcriptome analysis revealed that FTO was specifically upregulated in the CAF population, thereby contributing to the hypo-m6A status in the TME of CoM. Moreover, CAFs of CoM displayed extensive proangiogenic potential, which was largely compromised by FTO inhibition, both in vitro and in vivo. By employing multi-omics analysis, we showed that FTO effectively eliminates the m6A modifications of VEGFA and EGR1. This process subsequently disrupts the YTHDF2-dependent mRNA decay pathway, resulting in increased mRNA stability and upregulated expression of these molecules. Collectively, our findings initially indicate that the upregulation of FTO plays a pivotal role in tumor development by promoting CAF-mediated angiogenesis. Therapeutically, targeting FTO may show promise as a potential antiangiogenic strategy to optimize cancer treatment.
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Affiliation(s)
- Qili Liao
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200025, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025, PR China
| | - Hanhan Shi
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200025, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025, PR China
| | - Jie Yang
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200025, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025, PR China
| | - Shengfang Ge
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200025, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025, PR China
| | - Ruobing Jia
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200025, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025, PR China
| | - Xin Song
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200025, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025, PR China.
| | - Peiwei Chai
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200025, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025, PR China.
| | - Renbing Jia
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200025, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025, PR China.
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6
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Chen J, Zhou M, Wu W, Zhang J, Li Y, Li D. STimage-1K4M: A histopathology image-gene expression dataset for spatial transcriptomics. ARXIV 2024:arXiv:2406.06393v2. [PMID: 38947920 PMCID: PMC11213178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Recent advances in multi-modal algorithms have driven and been driven by the increasing availability of large image-text datasets, leading to significant strides in various fields, including computational pathology. However, in most existing medical image-text datasets, the text typically provides high-level summaries that may not sufficiently describe sub-tile regions within a large pathology image. For example, an image might cover an extensive tissue area containing cancerous and healthy regions, but the accompanying text might only specify that this image is a cancer slide, lacking the nuanced details needed for in-depth analysis. In this study, we introduce STimage-1K4M, a novel dataset designed to bridge this gap by providing genomic features for sub-tile images. STimage-1K4M contains 1,149 images derived from spatial transcriptomics data, which captures gene expression information at the level of individual spatial spots within a pathology image. Specifically, each image in the dataset is broken down into smaller sub-image tiles, with each tile paired with 15,000 - 30,000 dimensional gene expressions. With 4,293,195 pairs of sub-tile images and gene expressions, STimage-1K4M offers unprecedented granularity, paving the way for a wide range of advanced research in multi-modal data analysis an innovative applications in computational pathology, and beyond.
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Affiliation(s)
| | | | - Wenrong Wu
- University of North Carolina at Chapel Hill
| | | | - Yun Li
- University of North Carolina at Chapel Hill
| | - Didong Li
- University of North Carolina at Chapel Hill
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7
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Jostes S, Vardabasso C, Dong J, Carcamo S, Singh R, Phelps R, Meadows A, Grossi E, Hasson D, Bernstein E. H2A.Z chaperones converge on E2F target genes for melanoma cell proliferation. Genes Dev 2024; 38:336-353. [PMID: 38744503 PMCID: PMC11146596 DOI: 10.1101/gad.351318.123] [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: 11/27/2023] [Accepted: 04/29/2024] [Indexed: 05/16/2024]
Abstract
High levels of H2A.Z promote melanoma cell proliferation and correlate with poor prognosis. However, the role of the two distinct H2A.Z histone chaperone complexes SRCAP and P400-TIP60 in melanoma remains unclear. Here, we show that individual subunit depletion of SRCAP, P400, and VPS72 (YL1) results in not only the loss of H2A.Z deposition into chromatin but also a reduction of H4 acetylation in melanoma cells. This loss of H4 acetylation is particularly found at the promoters of cell cycle genes directly bound by H2A.Z and its chaperones, suggesting a coordinated regulation between H2A.Z deposition and H4 acetylation to promote their expression. Knockdown of each of the three subunits downregulates E2F1 and its targets, resulting in a cell cycle arrest akin to H2A.Z depletion. However, unlike H2A.Z deficiency, loss of the shared H2A.Z chaperone subunit YL1 induces apoptosis. Furthermore, YL1 is overexpressed in melanoma tissues, and its upregulation is associated with poor patient outcome. Together, these findings provide a rationale for future targeting of H2A.Z chaperones as an epigenetic strategy for melanoma treatment.
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Affiliation(s)
- Sina Jostes
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Chiara Vardabasso
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Joanna Dong
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Saul Carcamo
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
- Bioinformatics for Next-Generation Sequencing Facility, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Rajendra Singh
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Robert Phelps
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Austin Meadows
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Elena Grossi
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Dan Hasson
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
- Bioinformatics for Next-Generation Sequencing Facility, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Emily Bernstein
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA;
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
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8
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Caldwell BA, Li L. Epigenetic regulation of innate immune dynamics during inflammation. J Leukoc Biol 2024; 115:589-606. [PMID: 38301269 PMCID: PMC10980576 DOI: 10.1093/jleuko/qiae026] [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: 12/11/2023] [Revised: 01/18/2024] [Accepted: 01/19/2024] [Indexed: 02/03/2024] Open
Abstract
Innate immune cells play essential roles in modulating both immune defense and inflammation by expressing a diverse array of cytokines and inflammatory mediators, phagocytizing pathogens to promote immune clearance, and assisting with the adaptive immune processes through antigen presentation. Rudimentary innate immune "memory" states such as training, tolerance, and exhaustion develop based on the nature, strength, and duration of immune challenge, thereby enabling dynamic transcriptional reprogramming to alter present and future cell behavior. Underlying transcriptional reprogramming are broad changes to the epigenome, or chromatin alterations above the level of DNA sequence. These changes include direct modification of DNA through cytosine methylation as well as indirect modifications through alterations to histones that comprise the protein core of nucleosomes. In this review, we will discuss recent advances in our understanding of how these epigenetic changes influence the dynamic behavior of the innate immune system during both acute and chronic inflammation, as well as how stable changes to the epigenome result in long-term alterations of innate cell behavior related to pathophysiology.
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Affiliation(s)
- Blake A. Caldwell
- Department of Biological Sciences, Virginia Tech, 970 Washington St. SW, Blacksburg, VA 24061-0910, USA
| | - Liwu Li
- Department of Biological Sciences, Virginia Tech, 970 Washington St. SW, Blacksburg, VA 24061-0910, USA
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9
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Lujano Olazaba O, Farrow J, Monkkonen T. Fibroblast heterogeneity and functions: insights from single-cell sequencing in wound healing, breast cancer, ovarian cancer and melanoma. Front Genet 2024; 15:1304853. [PMID: 38525245 PMCID: PMC10957653 DOI: 10.3389/fgene.2024.1304853] [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: 09/30/2023] [Accepted: 02/26/2024] [Indexed: 03/26/2024] Open
Abstract
Cancer has been described as the wound that does not heal, in large part due to fibroblast involvement. Activation of cancer-associated fibroblasts (CAFs) contributes to critical features of the tumor microenvironment, including upregulation of key marker proteins, recruitment of immune cells, and deposition of extracellular matrix (ECM)-similar to fibroblast activation in injury-induced wound healing. Prior to the widespread availability of single-cell RNA sequencing (scRNA seq), studies of CAFs or fibroblasts in wound healing largely relied on models guided by individual fibroblast markers, or methods with less resolution to unravel the heterogeneous nature of CAFs and wound healing fibroblasts (especially regarding scarring outcome). Here, insights from the enhanced resolution provided by scRNA sequencing of fibroblasts in normal wound healing, breast cancer, ovarian cancer, and melanoma are discussed. These data have revealed differences in expression of established canonical activation marker genes, epigenetic modifications, fibroblast lineages, new gene and proteins of clinical interest for further experimentation, and novel signaling interactions with other cell types that include spatial information.
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Affiliation(s)
| | | | - Teresa Monkkonen
- Department of Biology, San Diego State University, San Diego, CA, United States
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10
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Jostes S, Vardabasso C, Dong J, Carcamo S, Singh R, Phelps R, Meadows A, Hasson D, Bernstein E. H2A.Z chaperones converge on histone H4 acetylation for melanoma cell proliferation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.26.568747. [PMID: 38076914 PMCID: PMC10705243 DOI: 10.1101/2023.11.26.568747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
High levels of H2A.Z promote melanoma cell proliferation and correlate with poor prognosis. However, the role of the two distinct H2A.Z histone chaperone complexes, SRCAP and P400-TIP60, in melanoma remains unclear. Here, we show that individual depletion of SRCAP, P400, and VPS72 (YL1) not only results in loss of H2A.Z deposition into chromatin, but also a striking reduction of H4 acetylation in melanoma cells. This loss of H4 acetylation is found at the promoters of cell cycle genes directly bound by H2A.Z and its chaperones, suggesting a highly coordinated regulation between H2A.Z deposition and H4 acetylation to promote their expression. Knockdown of each of the three subunits downregulates E2F1 and its targets, resulting in a cell cycle arrest akin to H2A.Z depletion. However, unlike H2A.Z deficiency, loss of the shared H2A.Z chaperone subunit YL1 induces apoptosis. Furthermore, YL1 is overexpressed in melanoma tissues, and its upregulation is associated with poor patient outcome. Together, these findings provide a rationale for future targeting of H2A.Z chaperones as an epigenetic strategy for melanoma treatment.
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Affiliation(s)
- Sina Jostes
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Chiara Vardabasso
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Joanna Dong
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Saul Carcamo
- Bioinformatics for Next Generation Sequencing Facility, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Rajendra Singh
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Robert Phelps
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Austin Meadows
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Dan Hasson
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Bioinformatics for Next Generation Sequencing Facility, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Emily Bernstein
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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11
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Corujo D, Buschbeck M. Epigenetic control of cancer inflammation. Nat Cell Biol 2023; 25:1245-1246. [PMID: 37605007 DOI: 10.1038/s41556-023-01183-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Affiliation(s)
- David Corujo
- Cancer and Leukaemia Epigenetics and Biology Program, Josep Carreras Leukaemia Research Institute (IJC), Campus Can Ruti, Badalona, Spain
| | - Marcus Buschbeck
- Cancer and Leukaemia Epigenetics and Biology Program, Josep Carreras Leukaemia Research Institute (IJC), Campus Can Ruti, Badalona, Spain.
- Germans Trias i Pujol Research Institute (IGTP), Badalona, Spain.
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