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Chen S, Wang F, Yang G, Yuan G, Liu M, Goldman G, Harris S, Wang W, Chen Z, Mary M. Loss of Bmp2 impairs odontogenesis via dysregulating pAkt/pErk/GCN5/Dlx3/Sp7. RESEARCH SQUARE 2023:rs.3.rs-3299295. [PMID: 37790473 PMCID: PMC10543288 DOI: 10.21203/rs.3.rs-3299295/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
BMP2 signaling plays a pivotal role in odontoblast differentiation and maturation during odontogenesis. Teeth lacking Bmp2 exhibit a morphology reminiscent of dentinogenesis imperfecta (DGI), associated with mutations in dentin matrix protein 1 (DMP1) and dentin sialophosphoprotein (DSPP) genes. Mechanisms by which BMP2 signaling influences expressions of DSPP and DMP1 and contributes to DGI remain elusive. To study the roles of BMP2 in dentin development, we generated Bmp2 conditional knockout (cKO) mice. Through a comprehensive approach involving RNA-seq, immunohistochemistry, promoter activity, ChIP, and Re-ChIP, we investigated downstream targets of Bmp2. Notably, the absence of Bmp2 in cKO mice led to dentin insufficiency akin to DGI. Disrupted Bmp2 signaling was linked to decreased expression of Dspp and Dmp1, as well as alterations in intracellular translocation of transcription factors Dlx3 and Sp7. Intriguingly, upregulation of Dlx3, Dmp1, Dspp, and Sp7, driven by BMP2, fostered differentiation of dental mesenchymal cells and biomineralization. Mechanistically, BMP2 induced phosphorylation of Dlx3, Sp7, and histone acetyltransferase GCN5 at Thr and Tyr residues, mediated by Akt and Erk42/44 kinases. This phosphorylation facilitated protein nuclear translocation, promoting interactions between Sp7 and Dlx3, as well as with GCN5 on Dspp and Dmp1 promoters. The synergy between Dlx3 and Sp7 bolstered transcription of Dspp and Dmp1. Notably, BMP2-driven GCN5 acetylated Sp7 and histone H3, while also recruiting RNA polymerase II to Dmp1 and Dspp chromatins, enhancing their transcriptions. Intriguingly, BMP2 suppressed the expression of histone deacetylases. we unveil hitherto uncharted involvement of BMP2 in dental cell differentiation and dentine development through pAkt/pErk42/44/Dlx3/Sp7/GCN5/Dspp/Dmp1.
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Affiliation(s)
- Shuo Chen
- UT Health Science Center at San Antonio
| | | | | | | | - Mengmeng Liu
- School of Dentistry, the University of Texas Health Science Center at San Antonio
| | - Graham Goldman
- School of Dentistry, the University of Texas Health Science Center at San Antonio
| | | | | | - Zhi Chen
- Wuhan University School and Hospital of Stomatology
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Li J, Cao Y, Yang Y, Ma H, Zhao J, Zhang Y, Liu N. Quantitative Acetylomics Reveals Substrates of Lysine Acetyltransferase GCN5 in Adult and Aging Drosophila. J Proteome Res 2023; 22:2909-2924. [PMID: 37545086 DOI: 10.1021/acs.jproteome.3c00247] [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] [Indexed: 08/08/2023]
Abstract
Protein lysine acetylation is a dynamic post-translational modification (PTM) that regulates a wide spectrum of cellular events including aging. General control nonderepressible 5 (GCN5) is a highly conserved lysine acetyltransferase (KAT). However, the acetylation substrates of GCN5 in vivo remain poorly studied, and moreover, how lysine acetylation changes with age and the contribution of KATs to aging remain to be addressed. Here, using Drosophila, we perform label-free quantitative acetylomic analysis, identifying new substrates of GCN5 in the adult and aging process. We further characterize the dynamics of protein acetylation with age, which exhibits a trend of increase. Since the expression of endogenous fly Gcn5 progressively increases during aging, we reason that, by combining the substrate analysis, the increase in acetylation with age is triggered, at least in part, by GCN5. Collectively, our study substantially expands the atlas of GCN5 substrates in vivo, provides a resource of protein acetylation that naturally occurs with age, and demonstrates how individual KAT contributes to the aging acetylome.
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Affiliation(s)
- Jingshu Li
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 100 Hai Ke Rd., Pudong, Shanghai 201210, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ye Cao
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 100 Hai Ke Rd., Pudong, Shanghai 201210, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yun Yang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 100 Hai Ke Rd., Pudong, Shanghai 201210, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huanhuan Ma
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 100 Hai Ke Rd., Pudong, Shanghai 201210, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Zhao
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 100 Hai Ke Rd., Pudong, Shanghai 201210, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yaoyang Zhang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 100 Hai Ke Rd., Pudong, Shanghai 201210, China
- Shanghai Key Laboratory of Aging Studies, 100 Hai Ke Rd., Pudong, Shanghai 201210, China
| | - Nan Liu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 100 Hai Ke Rd., Pudong, Shanghai 201210, China
- Shanghai Key Laboratory of Aging Studies, 100 Hai Ke Rd., Pudong, Shanghai 201210, China
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3
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Cheng C, Wang WB, Sun ML, Tang RQ, Bai L, Alper HS, Zhao XQ. Deletion of NGG1 in a recombinant Saccharomyces cerevisiae improved xylose utilization and affected transcription of genes related to amino acid metabolism. Front Microbiol 2022; 13:960114. [PMID: 36160216 PMCID: PMC9493327 DOI: 10.3389/fmicb.2022.960114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 08/09/2022] [Indexed: 11/16/2022] Open
Abstract
Production of biofuels and biochemicals from xylose using yeast cell factory is of great interest for lignocellulosic biorefinery. Our previous studies revealed that a natural yeast isolate Saccharomyces cerevisiae YB-2625 has superior xylose-fermenting ability. Through integrative omics analysis, NGG1, which encodes a transcription regulator as well as a subunit of chromatin modifying histone acetyltransferase complexes was revealed to regulate xylose metabolism. Deletion of NGG1 in S. cerevisiae YRH396h, which is the haploid version of the recombinant yeast using S. cerevisiae YB-2625 as the host strain, improved xylose consumption by 28.6%. Comparative transcriptome analysis revealed that NGG1 deletion down-regulated genes related to mitochondrial function, TCA cycle, ATP biosynthesis, respiration, as well as NADH generation. In addition, the NGG1 deletion mutant also showed transcriptional changes in amino acid biosynthesis genes. Further analysis of intracellular amino acid content confirmed the effect of NGG1 on amino acid accumulation during xylose utilization. Our results indicated that NGG1 is one of the core nodes for coordinated regulation of carbon and nitrogen metabolism in the recombinant S. cerevisiae. This work reveals novel function of Ngg1p in yeast metabolism and provides basis for developing robust yeast strains to produce ethanol and biochemicals using lignocellulosic biomass.
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Affiliation(s)
- Cheng Cheng
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
- School of Life Sciences, Hefei Normal University, Hefei, China
| | - Wei-Bin Wang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Meng-Lin Sun
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Rui-Qi Tang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Long Bai
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Hal S. Alper
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, United States
| | - Xin-Qing Zhao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
- *Correspondence: Xin-Qing Zhao,
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Gu Q, Wang Y, Zhao X, Yuan B, Zhang M, Tan Z, Zhang X, Chen Y, Wu H, Luo Y, Keller NP, Gao X, Ma Z. Inhibition of histone acetyltransferase GCN5 by a transcription factor FgPacC controls fungal adaption to host-derived iron stress. Nucleic Acids Res 2022; 50:6190-6210. [PMID: 35687128 PMCID: PMC9226496 DOI: 10.1093/nar/gkac498] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 05/19/2022] [Accepted: 05/27/2022] [Indexed: 02/07/2023] Open
Abstract
Poaceae plants can locally accumulate iron to suppress pathogen infection. It remains unknown how pathogens overcome host-derived iron stress during their successful infections. Here, we report that Fusarium graminearum (Fg), a destructive fungal pathogen of cereal crops, is challenged by host-derived high-iron stress. Fg infection induces host alkalinization, and the pH-dependent transcription factor FgPacC undergoes a proteolytic cleavage into the functional isoform named FgPacC30 under alkaline host environment. Subsequently FgPacC30 binds to a GCCAR(R = A/G)G element at the promoters of the genes involved in iron uptake and inhibits their expression, leading to adaption of Fg to high-iron stress. Mechanistically, FgPacC30 binds to FgGcn5 protein, a catalytic subunit of Spt-Ada-Gcn5 Acetyltransferase (SAGA) complex, leading to deregulation of histone acetylation at H3K18 and H2BK11, and repression of iron uptake genes. Moreover, we identified a protein kinase FgHal4, which is highly induced by extracellular high-iron stress and protects FgPacC30 against 26S proteasome-dependent degradation by promoting FgPacC30 phosphorylation at Ser2. Collectively, this study uncovers a novel inhibitory mechanism of the SAGA complex by a transcription factor that enables a fungal pathogen to adapt to dynamic microenvironments during infection.
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Affiliation(s)
- Qin Gu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Education, Nanjing, China
| | - Yujie Wang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Education, Nanjing, China
| | - Xiaozhen Zhao
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Education, Nanjing, China
| | - Bingqin Yuan
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Education, Nanjing, China
| | - Mengxuan Zhang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Education, Nanjing, China
| | - Zheng Tan
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Education, Nanjing, China
| | - Xinyue Zhang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Education, Nanjing, China
| | - Yun Chen
- State Key Laboratory of Rice Biology, the Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Huijun Wu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Education, Nanjing, China
| | - Yuming Luo
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Huaiyin Normal University, Huai'an, China
| | - Nancy P Keller
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, USA
| | - Xuewen Gao
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Education, Nanjing, China
| | - Zhonghua Ma
- State Key Laboratory of Rice Biology, the Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, China
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Ruan Y, Wang L, Lu Y. HDAC6 inhibitor, ACY1215 suppress the proliferation and induce apoptosis of gallbladder cancer cells and increased the chemotherapy effect of gemcitabine and oxaliplatin. Drug Dev Res 2021; 82:598-604. [PMID: 33428788 DOI: 10.1002/ddr.21780] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/16/2020] [Accepted: 12/04/2020] [Indexed: 12/24/2022]
Abstract
As an anti-tumor agent, histone deacetylases (HDACs) inhibitors have attracted wide attention. ACY1215 is a highly effective selective inhibitor of HDAC6, which can inhibit many kinds of tumors. Whether the expression of HDAC6 and its new inhibitor ACY1215 can inhibit the proliferation of gallbladder cancer cells and induce their apoptosis remains to be further studied. The purpose of this study was to explore the effects of ACY1215 on the gallbladder cancer cells. Cell proliferation of GBC-SD and SGC-996 was assessed by cell counting kit-8 assay and colony formation assay. Flow cytometry was used to detect the apoptosis of gallbladder cancer cells. Western blot was used to detect the expressions of PCNA,KI67, and apoptosis-related proteins of gallbladder cancer cells. The HDAC6 inhibitor ACY1215 suppressed the proliferation of GBC-SD and SDC-996 cells and promoted the apoptosis of gallbladder cancer cells. The HDAC6 inhibitor ACY1215 increases the chemotherapy effect of gemcitabine and oxaliplatin. ACY1215 could suppress cell proliferation and induce apoptosis of GBC-SD and SGC-996, and increased the chemotherapy effect of gemcitabine and oxaliplatin, which provides a rationale for the combination of HDAC6 selective inhibitors with other anticancer agents in treating gallbladder cancer.
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Affiliation(s)
- Yi Ruan
- Department of Minimal Invasive Surgery, Ninbo Medical Center Lihuili Hospital, Ningbo, Zhejiang, China
| | - Luoluo Wang
- Department of Minimal Invasive Surgery, Ninbo Medical Center Lihuili Hospital, Ningbo, Zhejiang, China
| | - Yeting Lu
- Department of Minimal Invasive Surgery, Ninbo Medical Center Lihuili Hospital, Ningbo, Zhejiang, China
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Non-histone protein acetylation by the evolutionarily conserved GCN5 and PCAF acetyltransferases. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2020; 1864:194608. [PMID: 32711095 DOI: 10.1016/j.bbagrm.2020.194608] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 07/13/2020] [Accepted: 07/15/2020] [Indexed: 01/08/2023]
Abstract
GCN5, conserved from yeast to humans, and the vertebrate specific PCAF, are lysine acetyltransferase enzymes found in large protein complexes. Both enzymes have well documented roles in the histone acetylation and the concomitant regulation of transcription. However, these enzymes also acetylate non-histone substrates to impact diverse aspects of cell physiology. Here, I review our current understanding of non-histone acetylation by GCN5 and PCAF across eukaryotes, from target identification to molecular mechanism and regulation. I focus mainly on budding yeast, where Gcn5 was first discovered, and mammalian systems, where the bulk of non-histone substrates have been characterized. I end the review by defining critical caveats and open questions that apply to all models.
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7
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Gong X, Yu Q, Duan K, Tong Y, Zhang X, Mei Q, Lu L, Yu X, Li S. Histone acetyltransferase Gcn5 regulates gene expression by promoting the transcription of histone methyltransferase SET1. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2020; 1863:194603. [PMID: 32663628 DOI: 10.1016/j.bbagrm.2020.194603] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 06/20/2020] [Accepted: 07/08/2020] [Indexed: 01/26/2023]
Abstract
Many chromatin modifying factors regulate gene expression in an as-yet-unknown indirect manner. Revealing the molecular basis for this indirect gene regulation will help understand their precise roles in gene regulation and associated biological processes. Here, we studied histone modifying enzymes that indirectly regulate gene expression by modulating the expression of histone methyltransferase, Set1. Through unbiased screening of the histone H3/H4 mutant library, we identified 13 histone substitution mutations with reduced levels of Set1 and H3K4 trimethylation (H3K4me3) and 2 mutations with increased levels of Set1 and H3K4me3, which concentrate at 3 structure clusters. Among these substitutions, the H3K14A mutant substantially reduces SET1 transcription and H3K4me3. H3K14 is acetylated by histone acetyltransferase Gcn5 at SET1 promoter, which then promotes SET1 transcription to maintain normal H3K4me3 levels. In contrast, the histone deacetylase Rpd3 deacetylates H3K14 to repress SET1 transcription and hence reduce H3K4me3 levels, establishing a dynamic crosstalk between H3K14ac and H3K4me3. By promoting the transcription of SET1 and maintaining H3K4me3 levels, Gcn5 regulates the transcription of a subset gene in an indirect manner. Collectively, we propose a model wherein Gcn5 promotes the expression of chromatin modifiers to regulate histone crosstalk and gene transcription.
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Affiliation(s)
- Xuanyunjing Gong
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, Hubei 430062, China
| | - Qi Yu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, Hubei 430062, China
| | - Kai Duan
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, Hubei 430062, China
| | - Yue Tong
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, Hubei 430062, China
| | - Xinyu Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, Hubei 430062, China
| | - Qianyun Mei
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, Hubei 430062, China
| | - Li Lu
- Institute of TCM and Natural Products, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, 185 East Lake Road, Wuhan 430071, China
| | - Xilan Yu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, Hubei 430062, China.
| | - Shanshan Li
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, Hubei 430062, China.
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Mustachio LM, Roszik J, Farria A, Dent SYR. Targeting the SAGA and ATAC Transcriptional Coactivator Complexes in MYC-Driven Cancers. Cancer Res 2020; 80:1905-1911. [PMID: 32094302 DOI: 10.1158/0008-5472.can-19-3652] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 01/28/2020] [Accepted: 02/19/2020] [Indexed: 12/26/2022]
Abstract
Targeting epigenetic regulators, such as histone-modifying enzymes, provides novel strategies for cancer therapy. The GCN5 lysine acetyltransferase (KAT) functions together with MYC both during normal development and in oncogenesis. As transcription factors, MYC family members are difficult to target with small-molecule inhibitors, but the acetyltransferase domain and the bromodomain in GCN5 might provide alternative targets for disruption of MYC-driven functions. GCN5 is part of two distinct multiprotein histone-modifying complexes, SAGA and ATAC. This review summarizes key findings on the roles of SAGA and ATAC in embryo development and in cancer to better understand the functional relationships of these complexes with MYC family members, as well as their future potential as therapeutic targets.
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Affiliation(s)
- Lisa Maria Mustachio
- Departments of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jason Roszik
- Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Aimee Farria
- Departments of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Graduate School of Biomedical Sciences, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Sharon Y R Dent
- Departments of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, Texas. .,Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Graduate School of Biomedical Sciences, The University of Texas MD Anderson Cancer Center, Houston, Texas
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