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Zeng P, Zheng X, Zhang H, Zhou M, Chen Z, Song H, Xu W. Circular RNA KIAA0564 Serves as a Competitive Endogenous RNA for MicroRNA-424-5p, Mediating the Expression of Lysine Demethylase 4a, Thereby Facilitating Intervertebral Disc Degeneration. Appl Biochem Biotechnol 2024:10.1007/s12010-024-04962-y. [PMID: 38691277 DOI: 10.1007/s12010-024-04962-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2024] [Indexed: 05/03/2024]
Abstract
A growing body of research has confirmed the involvement of circular RNAs (circRNAs) in the regulation of intervertebral disc degeneration (IDD) progression. However, the underlying molecular networks remain largely elusive. This study aimed to explore whether a novel circRNA, named circKIAA0564, affects nucleus pulposus (NP) cell injury and to elucidate its molecular mechanism. Both in vivo and in vitro IDD models were established, and the expression patterns of circKIAA0564/miR-424-5p/lysine demethylase 4a (KDM4A) were evaluated through quantitative reverse transcription PCR and Western blot analysis. Actinomycin D, RNase R, and Northern blotting were utilized to assess the circular structure of circKIAA0564. The Cell Counting Kit-8, flow cytometry, enzyme-linked immunosorbent assay, commercial assay kits, Western blotting, and reactive oxygen species (ROS) probes were employed to assess the inflammatory and oxidative stress status in NP cells and tissues. Hematoxylin and eosin and TUNEL staining were used to evaluate pathological damage in mouse NP tissues. RNA immunoprecipitation and dual-luciferase reporter assays were conducted to assess the direct targeting relationships among circKIAA0564, miR-424-5p, and KDM4A. CircKIAA0564 was found to be abnormally overexpressed in IDD, functioning as a novel circRNA. Knockdown of circKIAA0564 ameliorated interleukin-1 beta (IL-1β)-induced inflammation and oxidative stress in NP cells. The therapeutic effect of circKIAA0564 knockdown on NP cells was reversed by the silencing of miR-424-5p. Overexpression of circKIAA0564 exacerbated IL-1β-induced NP cell injury, a process that was reversed by knockdown of KDM4A. CircKIAA0564 activated the toll-like receptor 4 (TLR4)/nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB)/NOD-, LRR-, and pyrin domain-containing protein 3 (NLRP3) signaling pathway by regulating the miR-424-5p/KDM4A axis. CircKIAA0564 exacerbates IL-1β-induced inflammation and oxidative stress in NP cells by competitively binding miR-424-5p, thereby mediating KDM4A and activating the TLR4/NF-κB/NLRP3 signaling pathway. These findings provide robust data support for targeted therapy of IDD and the development of future pharmaceuticals.
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Affiliation(s)
- Peng Zeng
- Department of Orthopedics II, The Second Affiliated Hospital of Hunan University of Chinese Medicine, No.233, Cai E North Road, Kaifu District, Changsha City, 410005, Hunan, China
| | - XianBo Zheng
- Department of Orthopedics II, The Second Affiliated Hospital of Hunan University of Chinese Medicine, No.233, Cai E North Road, Kaifu District, Changsha City, 410005, Hunan, China
| | - Hui Zhang
- Department of Orthopedics II, The Second Affiliated Hospital of Hunan University of Chinese Medicine, No.233, Cai E North Road, Kaifu District, Changsha City, 410005, Hunan, China
| | - MingHan Zhou
- Department of Orthopedics II, The Second Affiliated Hospital of Hunan University of Chinese Medicine, No.233, Cai E North Road, Kaifu District, Changsha City, 410005, Hunan, China
| | - Zhen Chen
- Department of Orthopedics II, The Second Affiliated Hospital of Hunan University of Chinese Medicine, No.233, Cai E North Road, Kaifu District, Changsha City, 410005, Hunan, China
| | - HanLin Song
- Department of Orthopedics II, The Second Affiliated Hospital of Hunan University of Chinese Medicine, No.233, Cai E North Road, Kaifu District, Changsha City, 410005, Hunan, China
| | - WuJi Xu
- Department of Orthopedics II, The Second Affiliated Hospital of Hunan University of Chinese Medicine, No.233, Cai E North Road, Kaifu District, Changsha City, 410005, Hunan, China.
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Yang G, Li C, Tao F, Liu Y, Zhu M, Du Y, Fei C, She Q, Chen J. The emerging roles of lysine-specific demethylase 4A in cancer: Implications in tumorigenesis and therapeutic opportunities. Genes Dis 2024; 11:645-663. [PMID: 37692513 PMCID: PMC10491877 DOI: 10.1016/j.gendis.2022.12.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 12/28/2022] [Indexed: 09/12/2023] Open
Abstract
Lysine-specific demethylase 4 A (KDM4A, also named JMJD2A, KIA0677, or JHDM3A) is a demethylase that can remove methyl groups from histones H3K9me2/3, H3K36me2/3, and H1.4K26me2/me3. Accumulating evidence suggests that KDM4A is not only involved in body homeostasis (such as cell proliferation, migration and differentiation, and tissue development) but also associated with multiple human diseases, especially cancers. Recently, an increasing number of studies have shown that pharmacological inhibition of KDM4A significantly attenuates tumor progression in vitro and in vivo in a range of solid tumors and acute myeloid leukemia. Although there are several reviews on the roles of the KDM4 subfamily in cancer development and therapy, all of them only briefly introduce the roles of KDM4A in cancer without systematically summarizing the specific mechanisms of KDM4A in various physiological and pathological processes, especially in tumorigenesis, which greatly limits advances in the understanding of the roles of KDM4A in a variety of cancers, discovering targeted selective KDM4A inhibitors, and exploring the adaptive profiles of KDM4A antagonists. Herein, we present the structure and functions of KDM4A, simply outline the functions of KDM4A in homeostasis and non-cancer diseases, summarize the role of KDM4A and its distinct target genes in the development of a variety of cancers, systematically classify KDM4A inhibitors, summarize the difficulties encountered in the research of KDM4A and the discovery of related drugs, and provide the corresponding solutions, which would contribute to understanding the recent research trends on KDM4A and advancing the progression of KDM4A as a drug target in cancer therapy.
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Affiliation(s)
- Guanjun Yang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Changyun Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Fan Tao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Yanjun Liu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Minghui Zhu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Yu Du
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Chenjie Fei
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Qiusheng She
- School of Life Science and Engineering, Henan University of Urban Construction, Pingdingshan, Henan 467044, China
| | - Jiong Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, Zhejiang 315211, China
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, Zhejiang 315211, China
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Li XX, Xu JK, Su WJ, Wu HL, Zhao K, Zhang CM, Chen XK, Yang LX. The role of KDM4A-mediated histone methylation on temozolomide resistance in glioma cells through the HUWE1/ROCK2 axis. Kaohsiung J Med Sci 2024; 40:161-174. [PMID: 37873881 DOI: 10.1002/kjm2.12768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/05/2023] [Accepted: 09/20/2023] [Indexed: 10/25/2023] Open
Abstract
Temozolomide (TMZ) resistance presents a significant challenge in the treatment of gliomas. Although lysine demethylase 4A (KDM4A) has been implicated in various cancer-related processes, its role in TMZ resistance remains unclear. This study aims to elucidate the contribution of KDM4A to TMZ resistance in glioma cells and its potential implications for glioma prognosis. We assessed the expression of KDM4A in glioma cells (T98G and U251MG) using qRT-PCR and Western blot assays. To explore the role of KDM4A in TMZ resistance, we transfected siRNA targeting KDM4A into drug-resistant glioma cells. Cell viability was assessed using the CCK-8 assay and the TMZ IC50 value was determined. ChIP assays were conducted to investigate KDM4A, H3K9me3, and H3K36me3 enrichment on the promoters of ROCK2 and HUWE1. Co-immunoprecipitation confirmed the interaction between HUWE1 and ROCK2, and we examined the levels of ROCK2 ubiquitination following MG132 treatment. Notably, T98G cells exhibited greater resistance to TMZ than U251MG cells, and KDM4A displayed high expression in T98G cells. Inhibiting KDM4A resulted in decreased cell viability and a reduction in the TMZ IC50 value. Mechanistically, KDM4A promoted ROCK2 transcription by modulating H3K9me3 levels. Moreover, disruption of the interaction between HUWE1 and ROCK2 led to reduced ROCK2 ubiquitination. Inhibition of HUWE1 or overexpression of ROCK2 counteracted the sensitization effect of si-KDM4A on TMZ responsiveness in T98G cells. Our findings highlight KDM4A's role in enhancing TMZ resistance in glioma cells by modulating ROCK2 and HUWE1 transcription and expression through H3K9me3 and H3K36me3 removal.
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Affiliation(s)
- Xi-Xi Li
- Department of Neurosurgery, Sun Yat-sen University 1st Affiliated Hospital, Guangzhou, China
| | - Jia-Kun Xu
- Department of Neurosurgery, Sun Yat-sen University 1st Affiliated Hospital, Guangzhou, China
| | - Wei-Jie Su
- Department of Neurosurgery, Sun Yat-sen University 1st Affiliated Hospital, Guangzhou, China
| | - Hong-Lin Wu
- Department of Neurosurgery, Sun Yat-sen University 1st Affiliated Hospital, Guangzhou, China
| | - Kun Zhao
- Department of Neurosurgery, Sun Yat-sen University 1st Affiliated Hospital, Guangzhou, China
| | - Chang-Ming Zhang
- Department of Neurosurgery, Sun Yat-sen University 1st Affiliated Hospital, Guangzhou, China
| | - Xiang-Kun Chen
- Department of Emergency, The First People's Hospital of Suqian, Suqian, China
| | - Li-Xuan Yang
- Department of Neurosurgery, Sun Yat-sen University 1st Affiliated Hospital, Guangzhou, China
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Lombino J, Vallone R, Cimino M, Gulotta MR, De Simone G, Morando MA, Sabbatella R, Di Martino S, Fogazza M, Sarno F, Coronnello C, De Rosa M, Cipollina C, Altucci L, Perricone U, Alfano C. In-silico guided chemical exploration of KDM4A fragments hits. Clin Epigenetics 2023; 15:197. [PMID: 38129913 PMCID: PMC10740270 DOI: 10.1186/s13148-023-01613-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND Lysine demethylase enzymes (KDMs) are an emerging class of therapeutic targets, that catalyse the removal of methyl marks from histone lysine residues regulating chromatin structure and gene expression. KDM4A isoform plays an important role in the epigenetic dysregulation in various cancers and is linked to aggressive disease and poor clinical outcomes. Despite several efforts, the KDM4 family lacks successful specific molecular inhibitors. RESULTS Herein, starting from a structure-based fragments virtual screening campaign we developed a synergic framework as a guide to rationally design efficient KDM4A inhibitors. Commercial libraries were used to create a fragments collection and perform a virtual screening campaign combining docking and pharmacophore approaches. The most promising compounds were tested in-vitro by a Homogeneous Time-Resolved Fluorescence-based assay developed for identifying selective substrate-competitive inhibitors by means of inhibition of H3K9me3 peptide demethylation. 2-(methylcarbamoyl)isonicotinic acid was identified as a preliminary active fragment, displaying inhibition of KDM4A enzymatic activity. Its chemical exploration was deeply investigated by computational and experimental approaches which allowed a rational fragment growing process. The in-silico studies guided the development of derivatives designed as expansion of the primary fragment hit and provided further knowledge on the structure-activity relationship. CONCLUSIONS Our study describes useful insights into key ligand-KDM4A protein interaction and provides structural features for the development of successful selective KDM4A inhibitors.
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Affiliation(s)
- Jessica Lombino
- Molecular Informatics Group, Fondazione Ri.MED, 90100, Palermo, Italy
- C4T S.r.l., Colosseum Combinatorial Chemistry Center, 00133, Rome, Italy
| | - Rosario Vallone
- Structural Biology and Biophysics Unit, Fondazione Ri.MED, 90100, Palermo, Italy
| | - Maura Cimino
- Target Identification and Screening Group, Fondazione Ri.MED, 90100, Palermo, Italy
| | | | - Giada De Simone
- Molecular Informatics Group, Fondazione Ri.MED, 90100, Palermo, Italy
| | - Maria Agnese Morando
- Structural Biology and Biophysics Unit, Fondazione Ri.MED, 90100, Palermo, Italy
| | - Raffaele Sabbatella
- Structural Biology and Biophysics Unit, Fondazione Ri.MED, 90100, Palermo, Italy
| | | | - Mario Fogazza
- Target Identification and Screening Group, Fondazione Ri.MED, 90100, Palermo, Italy
- Axxam SpA, 20091, Bresso, MI, Italy
| | - Federica Sarno
- Dipartimento di Medicina di Precisione, Università degli Studi della Campania "L. Vanvitelli", 80100, Naples, Italy
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, 9713, Groningen, GZ, The Netherlands
| | | | - Maria De Rosa
- Medicinal Chemistry Group, Fondazione Ri.MED, 90100, Palermo, Italy
| | - Chiara Cipollina
- Target Identification and Screening Group, Fondazione Ri.MED, 90100, Palermo, Italy
| | - Lucia Altucci
- Dipartimento di Medicina di Precisione, Università degli Studi della Campania "L. Vanvitelli", 80100, Naples, Italy
- BIOGEM, 83031, Ariano Irpino, AV, Italy
- IEOS-CNR, 80100, Naples, Italy
| | - Ugo Perricone
- Molecular Informatics Group, Fondazione Ri.MED, 90100, Palermo, Italy.
| | - Caterina Alfano
- Structural Biology and Biophysics Unit, Fondazione Ri.MED, 90100, Palermo, Italy.
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Yu YF, Yao PQ, Wang ZK, Xie WW. MiR-137 promotes TLR4/NF-κB pathway activity through targeting KDM4A, inhibits osteogenic differentiation of human bone marrow mesenchymal stem cells and aggravates osteoporosis. J Orthop Surg Res 2023; 18:444. [PMID: 37344864 DOI: 10.1186/s13018-023-03918-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 06/08/2023] [Indexed: 06/23/2023] Open
Abstract
PURPOSE As the global population ages rapidly, osteoporotic fractures have become an important public health problem. Previous studies have suggested that miR-137 is involved in the regulation of bone formation, but its specific regulatory mechanism remains unclear. In this study, we aimed to explore the expression, role, and regulatory mechanism of miR-137 in the osteogenic differentiation of human bone marrow mesenchymal stem cells (hBMSCs). METHODS hBMSCs were induced into osteoblasts at first, and the expression level of miR-137 at different time points was detected. After knockdown and overexpression of miR-137, the effect of miR-137 on the osteogenic differentiation of hBMSCs was examined through alkaline phosphatase (ALP) staining and Alizarin Red staining. Western blotting was performed to detect the expression of runt-related transcription factor 2 (Runx2), osteocalcin (OCN), and toll-like receptor 4 (TLR4)/nuclear factor-κB (NF-κB) pathway. Bioinformatics websites were used to predict the target binding sites for miR-137 and KDM4A, and the results were validated using luciferase reporter gene experiments. Moreover, the ALP activity, calcium nodule formation, and activation of Runx2, OCN, and TLR4/NF-κB pathways were observed after knockdown of KDM4A. RESULTS The expression of miR-137 decreased during osteogenic differentiation. Knockdown of miR-137 expression increased the osteogenic ability of hBMSCs, while overexpression of it weakened the ability. Through the activation of the TLR4/NF-κB pathway, miR-137 inhibited osteogenic differentiation. KDM4A was identified as a predicted target gene of miR-137. After knocking down KDM4A expression, the osteogenic ability of hBMSCs was diminished, and the TLR4/NF-κB pathway was activated. Furthermore, the osteogenic ability of hBMSCs was partially restored and the activation level of TLR4/NF-κB was reduced after miR-137 knockdown. CONCLUSION MiR-137 enhances the activity of the TLR4/NF-κB pathway by targeting KDM4A, thereby inhibiting the osteogenic differentiation of hBMSCs and exacerbating osteoporosis.
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Affiliation(s)
- Ying-Feng Yu
- Department of Orthopedics, Songshan Lake Central Hospital of Dongguan City, Dongguan, Guangdong, China
| | - Pei-Quan Yao
- Department of Orthopedics, Songshan Lake Central Hospital of Dongguan City, Dongguan, Guangdong, China
| | - Zhi-Kun Wang
- Department of Orthopedics, Songshan Lake Central Hospital of Dongguan City, Dongguan, Guangdong, China
| | - Wen-Wei Xie
- Department of Orthopedics, Songshan Lake Central Hospital of Dongguan City, Dongguan, Guangdong, China.
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Wang J, Wang L, Wang Z, Lv M, Fu J, Zhang Y, Qiu P, Shi D, Luo C. Vitamin C down-regulates the H3K9me3-dependent heterochromatin in buffalo fibroblasts via PI3K/PDK1/SGK1/ KDM4A signal axis. Theriogenology 2023; 200:114-124. [PMID: 36805248 DOI: 10.1016/j.theriogenology.2023.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/02/2023] [Accepted: 02/02/2023] [Indexed: 02/11/2023]
Abstract
The success of reprogramming is dependent on the reprogramming factors enriched in the cytoplasm of recipient oocytes and the potential of donor nucleus to be reprogrammed. Histone 3 lysine 9 trimethylation (H3K9me3) was identified as a major epigenetic barrier impeding complete reprogramming. Treating donor cell with vitamin C (Vc) can enhance the developmental potential of cloned embryos, but the underlying mechanisms still need to be elucidated. In this study, we found that 20μg/mL Vc could promote proliferation and inhibit apoptosis of BFFs, as well as down-regulate the H3K9me3-dependent heterochromatin and increase chromatin accessibility. Inhibited the expression of KDM4A resulted in increasing apoptosis rate and the H3K9me3-dependent heterochromatin, which can be restored by Vc. Moreover, Vc up-regulated the expression of KDM4A through PI3K/PDK1/SGK1 pathway. Inhibiting any factor in the signal axis of this PI3K pathway not only suppressed the activity of KDM4A but also substantially increased the level of H3K9me3 modification and the expression of the HP1α protein. Finally, Vc can rescue those negative effects induced by the blocking the PI3K/PDK1/SGK1 pathway. Collectively, Vc can down-regulate the H3K9me3-dependent heterochromatin in BFFs via PI3K/PDK1/SGK1/KDM4A signal axis, suggesting that Vc can turn the chromatin status of donor cells to be reprogrammed more easily.
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Affiliation(s)
- Jinling Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Guangxi University, 75 Xiuling Road, Nanning, 530005, China; College of Animal Science and Technology, Guangxi University, 75 Xiuling Road, Nanning, 530005, China
| | - Lei Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Guangxi University, 75 Xiuling Road, Nanning, 530005, China; College of Animal Science and Technology, Guangxi University, 75 Xiuling Road, Nanning, 530005, China
| | - Zhiqiang Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Guangxi University, 75 Xiuling Road, Nanning, 530005, China; Guangxi Academy of Medical Sciences and the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, China
| | - Meiyun Lv
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Guangxi University, 75 Xiuling Road, Nanning, 530005, China; College of Animal Science and Technology, Guangxi University, 75 Xiuling Road, Nanning, 530005, China
| | - Jiayuan Fu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Guangxi University, 75 Xiuling Road, Nanning, 530005, China; College of Animal Science and Technology, Guangxi University, 75 Xiuling Road, Nanning, 530005, China
| | - Yunchuan Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Guangxi University, 75 Xiuling Road, Nanning, 530005, China; College of Animal Science and Technology, Guangxi University, 75 Xiuling Road, Nanning, 530005, China
| | - Peng Qiu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Guangxi University, 75 Xiuling Road, Nanning, 530005, China; College of Animal Science and Technology, Guangxi University, 75 Xiuling Road, Nanning, 530005, China
| | - Deshun Shi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Guangxi University, 75 Xiuling Road, Nanning, 530005, China; College of Animal Science and Technology, Guangxi University, 75 Xiuling Road, Nanning, 530005, China.
| | - Chan Luo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Guangxi University, 75 Xiuling Road, Nanning, 530005, China; College of Animal Science and Technology, Guangxi University, 75 Xiuling Road, Nanning, 530005, China.
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Cai J, Yang Y, Han J, Gao Y, Li X, Ge X. KDM4A, involved in the inflammatory and oxidative stress caused by traumatic brain injury-hemorrhagic shock, partly through the regulation of the microglia M1 polarization. BMC Neurosci 2023; 24:17. [PMID: 36869312 PMCID: PMC9983262 DOI: 10.1186/s12868-023-00784-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 02/16/2023] [Indexed: 03/05/2023] Open
Abstract
BACKGROUND Microglial polarization and the subsequent neuroinflammatory response and oxidative stress are contributing factors for traumatic brain injury (TBI) plus hemorrhagic shock (HS) induced brain injury. In the present work, we have explored whether Lysine (K)-specific demethylase 4 A (KDM4A) modulates microglia M1 polarization in the TBI and HS mice. RESULTS Male C57BL/6J mice were used to investigate the microglia polarization in the TBI + HS model in vivo. Lipopolysaccharide (LPS)-induced BV2 cells were used to examine the mechanism of KDM4A in regulating microglia polarization in vitro. We found that TBI + HS resulted in neuronal loss and microglia M1 polarization in vivo, reflected by the increased level of Iba1, tumor necrosis factor (TNF)-α, interleukin (IL)-1β, malondialdehyde (MDA) and the decreased level of reduced glutathione (GSH). Additionally, KDM4A was upregulated in response to TBI + HS and microglia were among the cell types showing the increased level of KDM4A. Similar to the results in vivo, KDM4A also highly expressed in LPS-induced BV2 cells. LPS-induced BV2 cells exhibited enhanced microglia M1 polarization, and enhanced level of pro-inflammatory cytokines, oxidative stress and reactive oxygen species (ROS), while this enhancement was abolished by the suppression of KDM4A. CONCLUSION Accordingly, our findings indicated that KDM4A was upregulated in response to TBI + HS and microglia were among the cell types showing the increased level of KDM4A. The important role of KDM4A in TBI + HS-induced inflammatory response and oxidative stress was at least partially realized through regulating microglia M1 polarization.
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Affiliation(s)
- Jimin Cai
- Department of Critical Care Medicine, Wuxi 9th People's Hospital Affiliated to Soochow University, 214000, Wuxi, Jiangsu, P.R. China
| | - Yang Yang
- Department of Neurosurgery, Central Hospital of Jinzhou, 121001, Jinzhou, Liaoning, P.R. China
| | - Jiahui Han
- Department of Critical Care Medicine, Wuxi 9th People's Hospital Affiliated to Soochow University, 214000, Wuxi, Jiangsu, P.R. China
| | - Yu Gao
- Department of Critical Care Medicine, Wuxi 9th People's Hospital Affiliated to Soochow University, 214000, Wuxi, Jiangsu, P.R. China
| | - Xin Li
- Department of Anesthesiology, Wuxi 9th People's Hospital Affiliated to Soochow University, 214000, Wuxi, Jiangsu, P.R. China.
| | - Xin Ge
- Department of Critical Care Medicine, Wuxi 9th People's Hospital Affiliated to Soochow University, 214000, Wuxi, Jiangsu, P.R. China. .,Orthopedic Institution of Wuxi City, 214000, Wuxi, Jiangsu, P.R. China.
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Li YN, Zhang XJ, Zhang N, Liang YL, Zhang YX, Zhao HX, Li ZC, Huang SX. Effects of overexpression of histone H3K9me3 demethylase on development of porcine cloned embryos. Yi Chuan 2023; 45:67-77. [PMID: 36927639 DOI: 10.16288/j.yczz.22-244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
The abnormal modification of histone is an important factor restricting development of porcine cloned embryos. Overexpression of histone H3K9me3 demethylase KDM4 family can effectively improve the developmental efficiency of cloned embryos. In order to explore the effects of overexpression of H3K9me3 demethylase on the development of porcine cloned embryos, KDM4A mRNA and KDM4D mRNA were injected respectively into porcine cloned embryos at the 1-cell stage and 2-cell stage to detect the blastocyst rate; 2-cell stage cloned embryos injected with KDM4A mRNA and embryo injection water (the control group) at the 1-cell stage were collected to detect the expression level of H3K9me3, and 4-cell stage cloned embryos were collected for single cell transcriptome sequencing, then the sequencing data was analyzed with KEGG and GO. The results showed that the blastocyst rate of porcine cloned embryos injected with KDM4A mRNA at 1-cell stage was significantly higher than that of the control group (25.32 ± 0.74% vs 14.78 ± 0.87%), while cloned embryos injected with KDM4D mRNA had a similar blastocyst rate with cloned embryos in control group (16.27 ± 0.77% vs 14.78 ± 0.87%). Porcine cloned embryos injected with KDM4A mRNA and KDM4D mRNA at 2-cell stage had a similar blastocyst rate with cloned embryos in control group (32.18 ± 1.67%, 30.04 ± 0.91% vs 31.22 ± 1.40%). The expression level of H3K9me3 in cloned embryos injected with KDM4A mRNA at 1-cell stage was lower than that in control group. There were 133 differentially expressed genes detected by transcriptome sequencing, including 52 up-regulated genes and 81 down-regulated genes. Pathways enriched by GO analyses were mainly related to protein localization. Pathways enriched by KEGG analyses were related to cellular senescence and acute myeloid leukemia. These results suggest that overexpression of histone H3K9me3 demethylase KDM4A can significantly improve the developmental efficiency of porcine cloned embryos.
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Affiliation(s)
- Ya-Nan Li
- 1. National Engineering Research Center for Breeding Swine Industry, College of Animal Science of South China Agricultural University, Guangzhou 510642, China.,2. National & Local Joint Engineering Research Center for Breeding Animal Industry, Guangzhou 510642, China.,3. Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, Guangzhou 510642, China
| | - Xian-Jun Zhang
- 1. National Engineering Research Center for Breeding Swine Industry, College of Animal Science of South China Agricultural University, Guangzhou 510642, China.,2. National & Local Joint Engineering Research Center for Breeding Animal Industry, Guangzhou 510642, China.,3. Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, Guangzhou 510642, China
| | - Ning Zhang
- 1. National Engineering Research Center for Breeding Swine Industry, College of Animal Science of South China Agricultural University, Guangzhou 510642, China.,2. National & Local Joint Engineering Research Center for Breeding Animal Industry, Guangzhou 510642, China.,3. Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, Guangzhou 510642, China
| | - Ya-Lin Liang
- 1. National Engineering Research Center for Breeding Swine Industry, College of Animal Science of South China Agricultural University, Guangzhou 510642, China.,2. National & Local Joint Engineering Research Center for Breeding Animal Industry, Guangzhou 510642, China.,3. Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, Guangzhou 510642, China
| | - Yu-Xing Zhang
- 1. National Engineering Research Center for Breeding Swine Industry, College of Animal Science of South China Agricultural University, Guangzhou 510642, China.,2. National & Local Joint Engineering Research Center for Breeding Animal Industry, Guangzhou 510642, China.,3. Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, Guangzhou 510642, China
| | - Hua-Xing Zhao
- 1. National Engineering Research Center for Breeding Swine Industry, College of Animal Science of South China Agricultural University, Guangzhou 510642, China.,2. National & Local Joint Engineering Research Center for Breeding Animal Industry, Guangzhou 510642, China.,3. Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, Guangzhou 510642, China
| | - Zi-Cong Li
- 1. National Engineering Research Center for Breeding Swine Industry, College of Animal Science of South China Agricultural University, Guangzhou 510642, China.,2. National & Local Joint Engineering Research Center for Breeding Animal Industry, Guangzhou 510642, China.,3. Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, Guangzhou 510642, China
| | - Si-Xiu Huang
- 1. National Engineering Research Center for Breeding Swine Industry, College of Animal Science of South China Agricultural University, Guangzhou 510642, China.,2. National & Local Joint Engineering Research Center for Breeding Animal Industry, Guangzhou 510642, China.,3. Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, Guangzhou 510642, China
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9
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Pei J, Zhang S, Yang X, Han C, Pan Y, Li J, Wang Z, Sun C, Zhang J. Epigenetic regulator KDM4A activates Notch1-NICD-dependent signaling to drive tumorigenesis and metastasis in breast cancer. Transl Oncol 2022; 28:101615. [PMID: 36592610 PMCID: PMC9816809 DOI: 10.1016/j.tranon.2022.101615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 10/18/2022] [Accepted: 12/27/2022] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Altered epigenetic reprogramming and events contribute to breast cancer (Bca) progression and metastasis. How the epigenetic histone demethylases modulate breast cancer progression remains poorly defined. We aimed to elucidate the biological roles of KDM4A in driving Notch1 activation and Bca progression. METHODS The KDM4A expression in Bca specimens was analyzed using quantitative PCR and immunohistochemical assays. The biological roles of KDM4A were evaluated using wound-healing assays and an in vivo metastasis model. The Chromatin Immunoprecipitation (ChIP)-qPCR assay was used to determine the role of KDM4A in Notch1 regulation. RESULTS Here, we screened that targeting KDM4A could induce notable cell growth suppression. KDM4A is required for the growth and progression of Bca cells. High KDM4A enhances tumor migration abilities and in vivo lung metastasis. Bioinformatic analysis suggested that KDM4A was highly expressed in tumors and high KDM4A correlates with poor survival outcomes. KDM4A activates Notch1 expressions via directly binding to the promoters and demethylating H3K9me3 modifications. KDM4A inhibition reduces expressions of a list of Notch1 downstream targets, and ectopic expressions of ICN1 could restore the corresponding levels. KDM4A relies on Notch1 signaling to maintain cell growth, migration and self-renewal capacities. Lastly, we divided a panel of cell lines into KDM4Ahigh and KDM4Alow groups. Targeting Notch1 using specific LY3039478 could efficiently suppress cell growth and colony formation abilities of KDM4Ahigh Bca. CONCLUSION Taken together, KDM4A could drive Bca progression via triggering the activation of Notch1 pathway by decreasing H3K9me3 levels, highlighting a promising therapeutic target for Bca.
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Affiliation(s)
- Jing Pei
- Department of Breast Surgery, First Affiliated Hospital of Anhui Medical University, 218 JiXi Avenue, Hefei, Anhui 230022, PR China,Corresponding authors.
| | - ShengQuan Zhang
- Department of Biochemistry and Molecular Biology, Anhui Medical University, 81 Meishan Road, Hefei, Anhui 230032, PR China
| | - Xiaowei Yang
- Department of Breast Surgery, First Affiliated Hospital of Anhui Medical University, 218 JiXi Avenue, Hefei, Anhui 230022, PR China
| | - Chunguang Han
- Department of Breast Surgery, First Affiliated Hospital of Anhui Medical University, 218 JiXi Avenue, Hefei, Anhui 230022, PR China
| | - Yubo Pan
- Department of Breast Surgery, First Affiliated Hospital of Anhui Medical University, 218 JiXi Avenue, Hefei, Anhui 230022, PR China
| | - Jun Li
- Department of Breast Surgery, First Affiliated Hospital of Anhui Medical University, 218 JiXi Avenue, Hefei, Anhui 230022, PR China
| | - Zhaorui Wang
- Department of Breast Surgery, First Affiliated Hospital of Anhui Medical University, 218 JiXi Avenue, Hefei, Anhui 230022, PR China
| | - Chenyu Sun
- AMITA Health Saint Joseph Hospital Chicago, 2900 N. Lake Shore Drive, Chicago, Illinois 60657, USA
| | - Jing Zhang
- The Department of Breast Surgery, The Tumor Hospital of XuZhou, 131 HuanCheng Road, XuZhou, Jiangsu 221003, PR China,Corresponding authors.
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Molenaar TM, Malik M, Silva J, Liu NQ, Haarhuis JHI, Ambrosi C, Kwesi-Maliepaard EM, Welsem TV, Baubec T, Faller WJ, van Leeuwen F. The histone methyltransferase SETD2 negatively regulates cell size. J Cell Sci 2022; 135:276509. [PMID: 36052643 DOI: 10.1242/jcs.259856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 08/23/2022] [Indexed: 11/20/2022] Open
Abstract
Cell size varies between cell types but is tightly regulated by cell-intrinsic and extrinsic mechanisms. Cell-size control is important for cell function and changes in cell size are frequently observed in cancer. Here we uncover a role for SETD2 in regulating cell size. SETD2 is a lysine methyltransferase and a tumor suppressor protein involved in transcription, RNA processing and DNA repair. At the molecular level, SETD2 is best known for associating with RNA polymerase II through its Set2-Rbp1 interacting (SRI) domain and methylating histone H3 on lysine 36 (H3K36) during transcription. Using multiple, independent perturbation strategies we identify SETD2 as a negative regulator of global protein synthesis rates and cell size. We provide evidence that overexpression of the H3K36 demethylase KDM4A or the oncohistone H3.3K36M also increase cell size. In addition, ectopic overexpression of a decoy SRI domain increased cell size, suggesting that the relevant substrate is engaged by SETD2 via its SRI domain. These data add a central role of SETD2 in regulating cellular physiology and warrant further studies on separating the different functions of SETD2 in cancer development.
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Affiliation(s)
- Thom M Molenaar
- Division of Gene Regulation, Netherlands Cancer Institute, 1066CX Amsterdam, The Netherlands
| | - Muddassir Malik
- Division of Gene Regulation, Netherlands Cancer Institute, 1066CX Amsterdam, The Netherlands
| | - Joana Silva
- Division of Oncogenomics, Netherlands Cancer Institute, 1066CX Amsterdam, The Netherlands
| | - Ning Qing Liu
- Division of Gene Regulation, Oncode Institute, Netherlands Cancer Institute, 1066CX Amsterdam, The Netherlands
| | - Judith H I Haarhuis
- Division of Cell Biology, Netherlands Cancer Institute, 1066CX Amsterdam, The Netherlands
| | - Christina Ambrosi
- Department of Molecular Mechanisms of Disease, University of Zurich, 8057 Zurich, Switzerland.,Life Science Zurich Graduate School, University of Zurich and ETH Zurich, Zurich, Switzerland
| | | | - Tibor van Welsem
- Division of Gene Regulation, Netherlands Cancer Institute, 1066CX Amsterdam, The Netherlands
| | - Tuncay Baubec
- Department of Molecular Mechanisms of Disease, University of Zurich, 8057 Zurich, Switzerland.,Genome Biology and Epigenetics, Institute of Biodynamics and Biocomplexity, Department of Biology, Utrecht University, 3584 CH, Utrecht, The Netherlands
| | - William J Faller
- Division of Oncogenomics, Netherlands Cancer Institute, 1066CX Amsterdam, The Netherlands
| | - Fred van Leeuwen
- Division of Gene Regulation, Netherlands Cancer Institute, 1066CX Amsterdam, The Netherlands.,Department of Medical Biology, Amsterdam UMC, University of Amsterdam, 1105AZ Amsterdam, The Netherlands
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11
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Yeh WW, Chen YQ, Yang WS, Hong YC, Kao S, Liu TT, Chen TW, Chang L, Chang PC. SUMO Modification of Histone Demethylase KDM4A in Kaposi's Sarcoma-Associated Herpesvirus-Induced Primary Effusion Lymphoma. J Virol 2022;:e0075522. [PMID: 35914074 DOI: 10.1128/jvi.00755-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Primary effusion lymphoma (PEL) is a fatal B-cell lymphoma caused by Kaposi’s sarcoma-associated herpesvirus (KSHV) infection. Inducing KSHV lytic replication that causes the death of host cells is an attractive treatment approach for PE; however, combination therapy inhibiting viral production is frequently needed to improve its outcomes. We have previously shown that the KSHV lytic protein K-bZIP can SUMOylate histone lysine demethylase 4A (KDM4A) at lysine 471 (K471) and this SUMOylation is required for virus production upon KSHV reactivation. Here, we demonstrate that SUMOylation of KDM4A orchestrates PEL cell survival, a major challenge for the success of PEL treatment; and cell movement and angiogenesis, the cell functions contributing to PEL cell extravasation and dissemination. Furthermore, integrated ChIP-seq and RNA-seq analyses identified interleukin-10 (IL-10), an immunosuppressive cytokine, as a novel downstream target of KDM4A. We demonstrate that PEL-induced angiogenesis is dependent on IL-10. More importantly, single-cell RNA sequencing (scRNA-seq) analysis demonstrated that, at the late stage of KSHV reactivation, KDM4A determines the fates of PEL cells, as evidenced by two distinct cell populations; one with less apoptotic signaling expresses high levels of viral genes and the other is exactly opposite, while KDM4A-K417R-expressing cells contain only the apoptotic population with less viral gene expression. Consistently, KDM4A knockout significantly reduced cell viability and virus production in KSHV-reactivated PEL cells. Since inhibiting PEL extravasation and eradicating KSHV-infected PEL cells without increasing viral load provide a strong rationale for treating PEL, this study indicates targeting KDM4A as a promising therapeutic option for treating PEL. IMPORTANCE PEL is an aggressive and untreatable B-cell lymphoma caused by KSHV infection. Therefore, new therapeutic approaches for PEL need to be investigated. Since simultaneous induction of KSHV reactivation and apoptosis can directly kill PEL cells, they have been applied in the treatment of this hematologic malignancy and have made progress. Epigenetic therapy with histone deacetylase (HDAC) inhibitors has been proved to treat PEL. However, the antitumor efficacies of HDAC inhibitors are modest and new approaches are needed. Following our previous report showing that the histone lysine demethylase KDM4A and its SUMOylation are required for lytic reactivation of KSHV in PEL cells, we further investigated its cellular function. Here, we found that SUMOylation of KDM4A is required for the survival, movement, and angiogenesis of lytic KSHV-infected PEL cells. Together with our previous finding showing the importance of KDM4A SUMOylation in viral production, KDM4A can be a potential therapeutic target for PEL.
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12
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Lapidot M, Saladi SV, Salgia R, Sattler M. Novel Therapeutic Targets and Immune Dysfunction in Malignant Pleural Mesothelioma. Front Pharmacol 2022; 12:806570. [PMID: 35069219 PMCID: PMC8776703 DOI: 10.3389/fphar.2021.806570] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 12/16/2021] [Indexed: 12/20/2022] Open
Abstract
Advances in the treatment of malignant pleural mesothelioma (MPM) have been disappointing, despite the apparent need for new therapeutic options for this rare and devastating cancer. Drug resistance is common and surgical intervention has brought benefits only to a subset of patients. MPM is a heterogenous disease with a surprisingly low mutation rate and recent sequencing efforts have confirmed alterations in a limited number of tumor suppressors that do not provide apparent insights into the molecular mechanisms that drive this malignancy. There is increasing evidence that epigenetic regulation leads to immune evasion and transformation in MPM. Further, the low efficacy of immune checkpoint inhibitors is consistent with a suppression of genes involved in the anti-tumor immune response. We review three promising emerging therapeutic targets (STAT3, KDM4A, heparanase) and highlight their potential effects on the immune response.
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Affiliation(s)
- Moshe Lapidot
- Department of Thoracic Surgery, Galilee Medical Center, Nahariya, Israel
| | - Srinivas Vinod Saladi
- Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, United States
- Broad Institute of Harvard and MIT, Cambridge, MA, United States
| | - Ravi Salgia
- Department of Medical Oncology and Therapeutics Research, City of Hope, Duarte, CA, United States
| | - Martin Sattler
- Department of Medicine, Harvard Medical School, Boston, MA, United States
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, United States
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13
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Van Rechem C, Ji F, Chakraborty D, Black JC, Sadreyev RI, Whetstine JR. Collective regulation of chromatin modifications predicts replication timing during cell cycle. Cell Rep 2021; 37:109799. [PMID: 34610305 PMCID: PMC8530517 DOI: 10.1016/j.celrep.2021.109799] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/16/2021] [Accepted: 09/14/2021] [Indexed: 12/13/2022] Open
Abstract
Replication timing (RT) associates with genome architecture, while having a mixed relationship to histone marks. By profiling replication at high resolution and assessing broad histone marks across the cell cycle at the resolution of RT with and without genetic perturbation, we address the causal relationship between histone marks and RT. Four primary chromatin states, including an uncharacterized H3K36me2 state, emerge and define 97% of the mappable genome. RT and local replication patterns (e.g., initiation zones) quantitatively associate with chromatin states, histone mark dynamics, and spatial chromatin structure. Manipulation of broad histone marks and enhancer elements by overexpressing the histone H3 lysine 9/36 tri-demethylase KDM4A impacts RT across 11% of the genome. Broad histone modification changes were strong predictors of the observed RT alterations. Lastly, replication within H3K36me2-enriched neighborhoods is sensitive to KDM4A overexpression and is controlled at a megabase scale. These studies establish a role for collective chromatin mark regulation in modulating RT.
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Affiliation(s)
- Capucine Van Rechem
- Massachusetts General Hospital Cancer Center and Harvard Medical School, Charlestown, MA 02129, USA; Department of Pathology, Stanford Medicine, Stanford, CA 94305, USA
| | - Fei Ji
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Damayanti Chakraborty
- Massachusetts General Hospital Cancer Center and Harvard Medical School, Charlestown, MA 02129, USA
| | - Joshua C Black
- Massachusetts General Hospital Cancer Center and Harvard Medical School, Charlestown, MA 02129, USA
| | - Ruslan I Sadreyev
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA.
| | - Johnathan R Whetstine
- Massachusetts General Hospital Cancer Center and Harvard Medical School, Charlestown, MA 02129, USA; Cancer Signaling and Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA; Cancer Epigenetics Institute, Fox Chase Cancer Center, Philadelphia, PA 19111, USA.
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14
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Liu Y, Zhao L, Zhang J, Lv L, Han K, Huang C, Xu Z. Histone Demethylase KDM4A Inhibition Represses Neuroinflammation and Improves Functional Recovery in Ischemic Stroke. Curr Pharm Des 2021; 27:2528-2536. [PMID: 33402077 DOI: 10.2174/1381612827666210105124529] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 12/20/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Epigenetic regulation concerning histone lysine methylation and demethylation play a crucial role in cerebral ischemic injury. Dysregulation of histone methylation modifiers has been identified in cerebral ischemia. However, the function and the underlying mechanisms of histone demethylase KDM4A on neuroinflammation and functional recovery in ischemic stroke remains unclear. METHODS In the present study, the rat model of transient middle cerebral artery occlusion (MCAO) was established, and the expression level of KDM4A was assessed in brain tissues. KDM4A inhibition was carried out by intrathecal injection with Lv-shKDM4A, and then pro-inflammatory cytokines and neurological functional tests were assessed. RESULTS We demonstrated that rats subjected to MCAO showed a markedly increased expression of KDM4A, pro-inflammatory cytokines IL-1β and TNF-α, and vascular endothelial growth factor (VEGF), whereas KDM4A inhibition repressed the expression of IL-1β, TNF-α and VEGF both in MCAO and oxygen-glucose deprivation (OGD) models. Furthermore, KDM4A inhibition showed a marked improvement in spatial learning and sensorimotor function, as suggested by mNSS and foot-fault test, respectively. Mechanistically, KDM4A inhibition repressed NF-κB signaling activation in microglia as indicated by decreased expression and nuclear translocation of p65 in vitro and in vivo. The effects of KDM4A overexpression on exacerbating neuroinflammation was inhibited by additional treatment of NF-κB inhibitor (JSH-23). CONCLUSION The current results demonstrated KDM4A inhibition improves functional recovery in ischemic stroke by repressing NF-κB activation and subsequent neuroinflammation.
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Affiliation(s)
- Yanfei Liu
- Department of Neurosurgery, Suzhou Hospital of Integrated Traditional Chinese and Western Medicine, Jiangsu, 215101, China
| | - Liang Zhao
- Department of Neurosurgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
| | - Jianzhong Zhang
- Department of Neurosurgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
| | - Liquan Lv
- Department of Neurosurgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
| | - Kaiwei Han
- Department of Neurosurgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
| | - Chengguang Huang
- Department of Neurosurgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
| | - Zheng Xu
- Department of Neurosurgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
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15
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Zhang W, Liu W, Jia L, Chen D, Chang I, Lake M, Bentolila LA, Wang CY. Targeting KDM4A epigenetically activates tumor-cell-intrinsic immunity by inducing DNA replication stress. Mol Cell 2021; 81:2148-2165.e9. [PMID: 33743195 PMCID: PMC8141018 DOI: 10.1016/j.molcel.2021.02.038] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 10/23/2020] [Accepted: 02/24/2021] [Indexed: 12/17/2022]
Abstract
Developing strategies to activate tumor-cell-intrinsic immune response is critical for improving tumor immunotherapy by exploiting tumor vulnerability. KDM4A, as a histone H3 lysine 9 trimethylation (H3K9me3) demethylase, has been found to play a critical role in squamous cell carcinoma (SCC) growth and metastasis. Here we report that KDM4A inhibition promoted heterochromatin compaction and induced DNA replication stress, which elicited antitumor immunity in SCC. Mechanistically, KDM4A inhibition promoted the formation of liquid-like HP1γ puncta on heterochromatin and stall DNA replication, which activated tumor-cell-intrinsic cGAS-STING signaling through replication-stress-induced cytosolic DNA accumulation. Moreover, KDM4A inhibition collaborated with PD1 blockade to inhibit SCC growth and metastasis by recruiting and activating CD8+ T cells. In vivo lineage tracing demonstrated that KDM4A inhibition plus PD1 blockade efficiently eliminated cancer stem cells. Altogether, our results demonstrate that targeting KDM4A can activate anti-tumor immunity and enable PD1 blockade immunotherapy by aggravating replication stress in SCC cells.
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Affiliation(s)
- Wuchang Zhang
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, CA 90095, USA; Laboratory of Molecular Signaling, Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Wei Liu
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, CA 90095, USA; Laboratory of Molecular Signaling, Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Lingfei Jia
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, CA 90095, USA; Laboratory of Molecular Signaling, Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Demeng Chen
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, CA 90095, USA; Laboratory of Molecular Signaling, Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Insoon Chang
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, CA 90095, USA; Laboratory of Molecular Signaling, Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Michael Lake
- Advanced Light Microscopy and Spectroscopy Laboratory, California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Laurent A Bentolila
- Advanced Light Microscopy and Spectroscopy Laboratory, California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Cun-Yu Wang
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, CA 90095, USA; Laboratory of Molecular Signaling, Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, Los Angeles, CA 90095, USA.
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Chen M, Jiang Y, Sun Y. KDM4A-mediated histone demethylation of SLC7A11 inhibits cell ferroptosis in osteosarcoma. Biochem Biophys Res Commun 2021; 550:77-83. [PMID: 33689883 DOI: 10.1016/j.bbrc.2021.02.137] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 02/25/2021] [Indexed: 12/12/2022]
Abstract
Osteosarcoma (OS) is the most common type of bone tumor that seriously affects limb function and induces great pain in patients. Lung metastasis and chemotherapy resistance are two key issues leading to the poor prognosis of OS patients, therefore new treatment targets and strategies are urgently needed. In our study, we uncovered the role of histone demethylase KDM4A in regulating OS cell ferroptosis and tumor progression. KDM4A was significantly upregulated in OS specimens and high KDM4A expression was associated with poorer prognosis in OS patients. Our data indicated that targeting KDM4A significantly increased OS cell death, enhanced cisplatin response, and attenuated migration ability in vitro. KDM4A depletion dramatically inhibited tumor progression and lung metastasis of OS in vivo Further experiments confirmed that KDM4A knockdown promoted OS cell ferroptosis, a special non-apoptotic form of cell death. KDM4A regulates SLC7A11 transcription and OS cell ferroptosis by controlling H3K9me3 demethylation in the promoter region of SLC7A11. Our findings deepened the recognition of epigenetic regulatory mechanism in OS tumorigenesis, chemoresistance, and metastasis, suggesting that KDM4A activity may be a potential therapeutic target for future OS treatment.
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Affiliation(s)
- Meng Chen
- Department of Orthopedics, Trauma Centre of Fujian, The First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, China
| | - Yuhang Jiang
- Department of Musculoskeletal Surgery, Fudan University Shanghai Cancer Center, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Yangbai Sun
- Department of Musculoskeletal Surgery, Fudan University Shanghai Cancer Center, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
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Zhu HY, Kang XJ, Jin L, Zhang PY, Wu H, Tan T, Yu Y, Fan Y. Histone demethylase KDM4A overexpression improved the efficiency of corrected human tripronuclear zygote development. Mol Hum Reprod 2021; 27:6143036. [PMID: 33599278 PMCID: PMC7939728 DOI: 10.1093/molehr/gaab012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 02/03/2021] [Indexed: 01/22/2023] Open
Abstract
Human zygotes are difficult to obtain for research because of limited resources and ethical debates. Corrected human tripronuclear (ch3PN) zygotes obtained by removal of the extra pronucleus from abnormally fertilized tripronuclear (3PN) zygotes are considered an alternative resource for basic scientific research. In the present study, eight-cell and blastocyst formation efficiency were significantly lower in both 3PN and ch3PN embryos than in normal fertilized (2PN) embryos, while histone H3 lysine 9 trimethylation (H3K9me3) levels were much higher. It was speculated that the aberrant H3K9me3 level detected in ch3PN embryos may be related to low developmental competence. Microinjection of 1000 ng/µl lysine-specific demethylase 4A (KDM4A) mRNA effectively reduced the H3K9me3 level and significantly increased the developmental competence of ch3PN embryos. The quality of ch3PN zygotes improved as the grading criteria, cell number and pluripotent expression significantly increased in response to KDM4A mRNA injection. Developmental genes related to zygotic genome activation (ZGA) were also upregulated. These results indicate that KDM4A activates the transcription of the ZGA program by enhancing the expression of related genes, promoting epigenetic modifications and regulating the developmental potential of ch3PN embryos. The present study will facilitate future studies of ch3PN embryos and could provide additional options for infertile couples.
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Affiliation(s)
- Hai-Ying Zhu
- Department of Gynecology and Obstetrics, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Xiang-Jin Kang
- Department of Gynecology and Obstetrics, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Long Jin
- Department of Gynecology and Obstetrics, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Pu-Yao Zhang
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Han Wu
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
| | - Tao Tan
- Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming 650500, China
| | - Yang Yu
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Yong Fan
- Department of Gynecology and Obstetrics, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
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18
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Young NL, Dere R. Mechanistic insights into KDM4A driven genomic instability. Biochem Soc Trans 2021; 49:93-105. [PMID: 33492339 DOI: 10.1042/BST20191219] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 12/11/2020] [Accepted: 12/15/2020] [Indexed: 12/19/2022]
Abstract
Alterations in global epigenetic signatures on chromatin are well established to contribute to tumor initiation and progression. Chromatin methylation status modulates several key cellular processes that maintain the integrity of the genome. KDM4A, a demethylase that belongs to the Fe-II dependent dioxygenase family that uses α-ketoglutarate and molecular oxygen as cofactors, is overexpressed in several cancers and is associated with an overall poor prognosis. KDM4A demethylates lysine 9 (H3K9me2/3) and lysine 36 (H3K36me3) methyl marks on histone H3. Given the complexity that exists with these marks on chromatin and their effects on transcription and proliferation, it naturally follows that demethylation serves an equally important role in these cellular processes. In this review, we highlight the role of KDM4A in transcriptional modulation, either dependent or independent of its enzymatic activity, arising from the amplification of this demethylase in cancer. KDM4A modulates re-replication of distinct genomic loci, activates cell cycle inducers, and represses proteins involved in checkpoint control giving rise to proliferative damage, mitotic disturbances and chromosomal breaks, ultimately resulting in genomic instability. In parallel, emerging evidence of non-nuclear substrates of epigenetic modulators emphasize the need to investigate the role of KDM4A in regulating non-nuclear substrates and evaluate their contribution to genomic instability in this context. The existence of promising KDM-specific inhibitors makes these demethylases an attractive target for therapeutic intervention in cancers.
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19
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Sun S, Yang F, Zhu Y, Zhang S. RETRACTED: KDM4A promotes the growth of non-small cell lung cancer by mediating the expression of Myc via DLX5 through the Wnt/β-catenin signaling pathway. Life Sci 2020; 262:118508. [PMID: 33002480 DOI: 10.1016/j.lfs.2020.118508] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 02/07/2023]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of the authors as they “found major problems in the data and conclusions through their later research”. 1. When the authors performed flow cytometry to detect apoptosis, the Annexin-V-coupled fluorophore they used was Fluor 647 (as described in the Methods section), which was incorrectly labelled as the Annexin-V-coupled fluorophore as FITC in their Figures (Fig. 5E, 7C and Fig. S1D). The excitation wavelengths of Alexa Fluor 647 (594/633 nm) are different from that of FITC (490 nm/520 nm), this mistake would lead to unreliability of their data. 2. The authors discovered a major error during the traceability of the antibodies used in the experiments. The primary antibody they used to detect KDM4A was actually a primary antibody for KDM6B, as evidenced by the western blots. KDM6B is a 177-kDa protein (consistent with the kDa shown in Fig. 1K and Fig. 2B), while KDM4A is a 150-kDa protein. 3. Lastly, the authors carelessly mislabeled KDM4A as KDM4B in Fig. 7. The authors and the Editors believe that the conclusions of the paper are not dependable, so we have decided to retract the paper. Apologies are offered to readers of the journal that this was not detected during the submission process.
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Affiliation(s)
- Shanshan Sun
- Department of General Oncotherapy, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai 264200, Shandong, PR China
| | - Fujun Yang
- Department of General Oncotherapy, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai 264200, Shandong, PR China
| | - Yongcun Zhu
- Department of Pathology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai 264200, Shandong, PR China
| | - Shukun Zhang
- Department of Pathology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai 264200, Shandong, PR China.
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20
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Van Rechem C, Ji F, Mishra S, Chakraborty D, Murphy SE, Dillingham ME, Sadreyev RI, Whetstine JR. The lysine demethylase KDM4A controls the cell-cycle expression of replicative canonical histone genes. Biochim Biophys Acta Gene Regul Mech 2020; 1863:194624. [PMID: 32798738 DOI: 10.1016/j.bbagrm.2020.194624] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/22/2020] [Accepted: 08/10/2020] [Indexed: 12/27/2022]
Abstract
Chromatin modulation provides a key checkpoint for controlling cell cycle regulated gene networks. The replicative canonical histone genes are one such gene family under tight regulation during cell division. These genes are most highly expressed during S phase when histones are needed to chromatinize the new DNA template. While this fact has been known for a while, limited knowledge exists about the specific chromatin regulators controlling their temporal expression during cell cycle. Since histones and their associated mutations are emerging as major players in diseases such as cancer, identifying the chromatin factors modulating their expression is critical. The histone lysine tri-demethylase KDM4A is regulated over cell cycle and plays a direct role in DNA replication timing, site-specific rereplication, and DNA amplifications during S phase. Here, we establish an unappreciated role for the catalytically active KDM4A in directly regulating canonical replicative histone gene networks during cell cycle. Of interest, we further demonstrate that KDM4A interacts with proteins controlling histone expression and RNA processing (i.e., hnRNPUL1 and FUS/TLS). Together, this study provides a new function for KDM4A in modulating canonical histone gene expression.
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Affiliation(s)
- Capucine Van Rechem
- Massachusetts General Hospital, Cancer Center and Harvard Medical School, Department of Medicine, 13th street bldg. 149, Charlestown, MA 02129, United States of America
| | - Fei Ji
- Massachusetts General Hospital, Department of Molecular Biology, Simches Research Center, Boston, MA 02114, United States of America
| | - Sweta Mishra
- Massachusetts General Hospital, Cancer Center and Harvard Medical School, Department of Medicine, 13th street bldg. 149, Charlestown, MA 02129, United States of America
| | - Damayanti Chakraborty
- Massachusetts General Hospital, Cancer Center and Harvard Medical School, Department of Medicine, 13th street bldg. 149, Charlestown, MA 02129, United States of America
| | - Sedona E Murphy
- Massachusetts General Hospital, Cancer Center and Harvard Medical School, Department of Medicine, 13th street bldg. 149, Charlestown, MA 02129, United States of America
| | - Megan E Dillingham
- Massachusetts General Hospital, Cancer Center and Harvard Medical School, Department of Medicine, 13th street bldg. 149, Charlestown, MA 02129, United States of America
| | - Ruslan I Sadreyev
- Massachusetts General Hospital, Department of Molecular Biology, Simches Research Center, Boston, MA 02114, United States of America; Massachusetts General Hospital, Department of Pathology and Harvard Medical School, Simches Research Center, Boston, MA 02114, United States of America.
| | - Johnathan R Whetstine
- Massachusetts General Hospital, Cancer Center and Harvard Medical School, Department of Medicine, 13th street bldg. 149, Charlestown, MA 02129, United States of America; Fox Chase Cancer Center, 333 Cottman Avenue West 260, Philadelphia, PA 19111, United States of America.
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21
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Cui S, Lei Z, Guan T, Fan L, Li Y, Geng X, Fu D, Jiang H, Xu S. Targeting USP1-dependent KDM4A protein stability as a potential prostate cancer therapy. Cancer Sci 2020; 111:1567-1581. [PMID: 32133742 PMCID: PMC7226285 DOI: 10.1111/cas.14375] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 02/08/2020] [Accepted: 02/25/2020] [Indexed: 01/10/2023] Open
Abstract
The histone demethylase lysine-specific demethylase 4A (KDM4A) is reported to be overexpressed and plays a vital in multiple cancers through controlling gene expression by epigenetic regulation of H3K9 or H3K36 methylation marks. However, the biological role and mechanism of KDM4A in prostate cancer (PC) remain unclear. Herein, we reported KDM4A expression was upregulation in phosphatase and tensin homolog knockout mouse prostate tissue. Depletion of KDM4A in PC cells inhibited their proliferation and survival in vivo and vitro. Further studies reveal that USP1 is a deubiquitinase that regulates KDM4A K48-linked deubiquitin and stability. Interestingly, we found c-Myc was a key downstream effector of the USP1-KDM4A/androgen receptor axis in driving PC cell proliferation. Notably, upregulation of KDM4A expression with high USP1 expression was observed in most prostate tumors and inhibition of USP1 promotes PC cells response to therapeutic agent enzalutamide. Our studies propose USP1 could be an anticancer therapeutic target in PC.
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Affiliation(s)
- Shu‐Zhong Cui
- Department of Abdominal SurgeryAffiliated Cancer Hospital and Institute of Guangzhou Medical UniversityGuangzhouChina
| | - Zi‐Ying Lei
- Department of Abdominal SurgeryAffiliated Cancer Hospital and Institute of Guangzhou Medical UniversityGuangzhouChina
| | - Tian‐Pei Guan
- Department of Abdominal SurgeryAffiliated Cancer Hospital and Institute of Guangzhou Medical UniversityGuangzhouChina
| | - Ling‐Ling Fan
- Department of BiochemistryMarlene and Stewart Greenebaum Cancer CenterUniversity of Maryland School of MedicineBaltimoreMDUSA
| | - You‐Qiang Li
- Department of BiochemistryMarlene and Stewart Greenebaum Cancer CenterUniversity of Maryland School of MedicineBaltimoreMDUSA
| | - Xin‐Yan Geng
- Department of BiochemistryMarlene and Stewart Greenebaum Cancer CenterUniversity of Maryland School of MedicineBaltimoreMDUSA
| | - De‐Xue Fu
- Department of SurgeryMarlene and Stewart Greenebaum Cancer CenterUniversity of Maryland School of MedicineBaltimoreMDUSA
| | - Hao‐Wu Jiang
- Department of AnesthesiologyCenter for the Study of ItchWashington University School of MedicineSt. LouisMOUSA
| | - Song‐Hui Xu
- Department of Abdominal SurgeryAffiliated Cancer Hospital and Institute of Guangzhou Medical UniversityGuangzhouChina
- Department of BiochemistryMarlene and Stewart Greenebaum Cancer CenterUniversity of Maryland School of MedicineBaltimoreMDUSA
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22
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Chen LH, Wang LP, Ma XQ. Circ_SPECC1 enhances the inhibition of miR-526b on downstream KDM4A/YAP1 pathway to regulate the growth and invasion of gastric cancer cells. Biochem Biophys Res Commun 2019; 517:253-259. [PMID: 31349968 DOI: 10.1016/j.bbrc.2019.07.065] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 07/18/2019] [Indexed: 01/24/2023]
Abstract
Gastric cancer (GC) is a common malignant tumor, and many studies have shown that circular RNAs (circRNAs) play important roles in the progress of GC. This study showed that circ_SPECC1 was down-regulated in various GC cell lines, significantly inhibited GC cell proliferation and invasion, and promote apoptosis, which might play an anti-oncogene role. Circ_SPECC1 was mainly located in the cytoplasm, and its sequence contained multiple potential binding sites of miR-526b. Pull-down experiments with biotinylated miR-526b mimics and circ_SPECC1 probe showed that they could enrich each other. RIP experiments found hat anti-AGO2 antibody could significantly enrich circ_SPECC1. Further dual luciferase reporter gene assay also confirmed that miR-526b could bind directly to circ_SPECC1. miR-526b was also down-regulated in GC cells, and one of its important target genes was KDM4A. Both circ_SPECC1 and miR-526b inhibited the expression of KDM4A and its downstream effector YAP1, but miR-526b inhibitors terminated the above-mentioned inhibition of circ_SPECC1, and KDM4A overexpression reversed the inhibition of circ_SPECC1 and miR-526b on YAP1 expression. Both miR-526b and KDM4A siRNA inhibited GC cell proliferation and invasion, and promote apoptosis; KDM4A overexpression had the opposite effects, and significantly blocked the regulation of miR-526b on cell growth and invasion. Therefore, circ_SPECC1 can enhance miR-526b inhibitory effect on downstream KDM4A/YAP1 pathway by adsorbing it, thus inhibiting GC cell growth and invasion. These findings enrich the mechanism of circRNAs in GC and will provide more new targets for the prevention and treatment of GC.
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Affiliation(s)
- Li-Hua Chen
- Department of General Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian, China
| | - Lin-Pei Wang
- Department of General Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian, China
| | - Xiao-Qiu Ma
- Department of Internal Medical Oncology, The 910th Hospital of the People's Liberation Army, Quanzhou, 362000, Fujian, China.
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23
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Guerra-Calderas L, González-Barrios R, Patiño CC, Alcaraz N, Salgado-Albarrán M, de León DC, Hernández CC, Sánchez-Pérez Y, Maldonado-Martínez HA, De la Rosa-Velazquez IA, Vargas-Romero F, Herrera LA, García-Carrancá A, Soto-Reyes E. CTCF- KDM4A complex correlates with histone modifications that negatively regulate CHD5 gene expression in cancer cell lines. Oncotarget 2018; 9:17028-17042. [PMID: 29682202 PMCID: PMC5908303 DOI: 10.18632/oncotarget.24798] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 02/26/2018] [Indexed: 11/25/2022] Open
Abstract
Histone demethylase KDM4A is involved in H3K9me3 and H3K36me3 demethylation, which are epigenetic modifications associated with gene silencing and RNA Polymerase II elongation, respectively. KDM4A is abnormally expressed in cancer, affecting the expression of multiple targets, such as the CHD5 gene. This enzyme localizes at the first intron of CHD5, and the dissociation of KDM4A increases gene expression. In vitro assays showed that KDM4A-mediated demethylation is enhanced in the presence of CTCF, suggesting that CTCF could increase its enzymatic activity in vivo, however the specific mechanism by which CTCF and KDM4A might be involved in the CHD5 gene repression is poorly understood. Here, we show that CTCF and KDM4A form a protein complex, which is recruited into the first intron of CHD5. This is related to a decrease in H3K36me3/2 histone marks and is associated with its transcriptional downregulation. Depletion of CTCF or KDM4A by siRNA, triggered the reactivation of CHD5 expression, suggesting that both proteins are involved in the negative regulation of this gene. Furthermore, the knockout of KDM4A restored the CHD5 expression and H3K36me3 and H3K36me2 histone marks. Such mechanism acts independently of CHD5 promoter DNA methylation. Our findings support a novel mechanism of epigenetic repression at the gene body that does not involve promoter silencing.
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Affiliation(s)
- Lissania Guerra-Calderas
- Cancer Biomedical Research Unit, Instituto Nacional de Cancerología (INCan), Mexico City, Mexico
| | - Rodrigo González-Barrios
- Cancer Biomedical Research Unit, Instituto Nacional de Cancerología (INCan), Mexico City, Mexico
| | - Carlos César Patiño
- Cancer Biomedical Research Unit, Instituto Nacional de Cancerología (INCan), Mexico City, Mexico
| | - Nicolás Alcaraz
- The Bioinformatics Centre, Section for RNA and Computational Biology, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Marisol Salgado-Albarrán
- Cancer Biomedical Research Unit, Instituto Nacional de Cancerología (INCan), Mexico City, Mexico
| | - David Cantú de León
- Clinical Research, Instituto Nacional de Cancerología (INCan), Mexico City, Mexico
| | - Clementina Castro Hernández
- Cancer Biomedical Research Unit, Instituto Nacional de Cancerología (INCan), Mexico City, Mexico.,Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Yesennia Sánchez-Pérez
- Cancer Biomedical Research Unit, Instituto Nacional de Cancerología (INCan), Mexico City, Mexico
| | | | - Inti A De la Rosa-Velazquez
- Genomics Lab, Universidad Nacional Autónoma de México, Red de Apoyo a la Investigación-CIC and Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán", Mexico City, Mexico
| | - Fernanda Vargas-Romero
- Instituto de Fisiologia Celular-Neurociencias, Universidad Nacional Autonoma de Mexico (UNAM), Mexico City, Mexico
| | - Luis A Herrera
- Cancer Biomedical Research Unit, Instituto Nacional de Cancerología (INCan), Mexico City, Mexico.,Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Alejandro García-Carrancá
- Cancer Biomedical Research Unit, Instituto Nacional de Cancerología (INCan), Mexico City, Mexico.,Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Ernesto Soto-Reyes
- Cancer Biomedical Research Unit, Instituto Nacional de Cancerología (INCan), Mexico City, Mexico
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24
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Lee HJ, Kim BK, Yoon KB, Kim YC, Han SY. Novel inhibitors of lysine (K)-specific Demethylase 4A with anticancer activity. Invest New Drugs 2017; 35:733-741. [PMID: 28905188 DOI: 10.1007/s10637-017-0496-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 07/20/2017] [Indexed: 10/18/2022]
Abstract
Lysine (K)-specific demethylase 4A (KDM4A) is a histone demethylase that removes methyl residues from trimethylated or dimethylated histone 3 at lysines 9 and 36. Overexpression of KDM4A is found in various cancer types. To identify KDM4A inhibitors with anti-tumor functions, screening with an in vitro KDM4A enzyme activity assay was carried out. The benzylidenehydrazine analogue LDD2269 was selected, with an IC50 of 6.56 μM of KDM4A enzyme inhibition, and the binding mode was investigated using in silico molecular docking. Demethylation inhibition by LDD2269 was confirmed with a cell-based assay using antibodies against methylated histone at lysines 9 and 36. HCT-116 colon cancer cell line proliferation was suppressed by LDD2269, which also interfered with soft-agar growth and migration of HCT-116 cells. AnnexinV staining and PARP cleavage experiments showed apoptosis induction by LDD2269. Derivatives of LDD2269 were synthesized and the structure-activity relationship was explored. LDD2269 is reported here as a strong inhibitor of KDM4A in in vitro and cell-based systems, with anti-tumor functions.
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Affiliation(s)
- Hyo Jeong Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea
| | - Bo-Kyoung Kim
- School of Life Sciences, Gwangju Institute of Science & Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea.,New Drug Development Center (NDDC), Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), Daegu, Republic of Korea
| | - Kyoung Bin Yoon
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea
| | - Yong-Chul Kim
- School of Life Sciences, Gwangju Institute of Science & Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea.
| | - Sun-Young Han
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea.
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25
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Jin X, Xu H, Wu X, Li T, Li J, Zhou Y, Dan H, Jiang L, Zeng X, Ji P, Chen Q. KDM4A as a prognostic marker of oral squamous cell carcinoma: Evidence from tissue microarray studies in a multicenter cohort. Oncotarget 2017; 8:80348-80357. [PMID: 29113308 PMCID: PMC5655203 DOI: 10.18632/oncotarget.18302] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 04/07/2017] [Indexed: 02/05/2023] Open
Abstract
Purpose Previous studies have identified histone demethylase KDM4A to be a key epigenetic priming factor for the invasive squamous cell carcinoma growth and metastasis. The purpose of this study was to examine KDM4A as an independent prognostic marker in oral squamous cell carcinoma, using multicenter tissue microarrays. Results The expression of KDM4A was significantly correlated with lymph node metastasis and TNM stage. KDM4A overexpression was associated with poor overall survival, and it was found to be a statistically significant independent predictor of all-cause mortality. These findings are validated by external TCGA HNSCC data. Addition of KDM4A expression improved the discriminatory accuracy of standard clinicopathologic features for prediction of cancer-specific survival (Model 4, area under the curve = 0.740, 95% confidence interval = 0.685 to 0.795, and Model 3, AUC = 0.695, 95% CI = 0.637 to 0.753, respectively). Materials and Methods KDM4A expression was measured by immunohistochemistry, using tissue microarrays of OSCC samples collected from 313 patients. Kruskal-Wallis and chi-square tests were applied to investigate the correlation between KDM4A expression and clinicopathological factors. Overall survival analysis was performed using the Kaplan-Meier and multivariable logistic regression models, and the predictive ability of KDM4A in combination with known OSCC risk factors was evaluated. Receiver operating characteristic curves were used to assess discriminatory accuracy of these models. Additionally, disease-free survival was analyzed in patients with head and neck SCC reported on The Cancer Genome Atlas database. Conclusions KDM4A expression is an independent predictor for the survival time of patients with OSCC and may be a valuable consideration to postoperative treatment options.
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Affiliation(s)
- Xin Jin
- College of Stomatology, Chongqing Medical University, Chongqing, China.,State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hao Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xingyu Wu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Taiwen Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yu Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hongxia Dan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Lu Jiang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xin Zeng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ping Ji
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China.,College of Stomatology, Chongqing Medical University, Chongqing, China
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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26
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Abstract
Epigenetic modifications are functionally involved in gene expression regulation. In particular, histone posttranslational modifications play a crucial role in functional chromatin organization. Several drugs able to inhibit or stimulate some families of proteins involved in epigenetic histone regulation have been found, a number of which are FDA-approved for the treatment of cutaneous T-cell lymphoma or are in phase I/II/III clinical trials for solid tumors. Although some protein families, such as histone deacetylases and their inhibitors, are well characterized, our understanding of histone lysine demethylases is still incomplete. We describe the in silico, in vitro, and cell-based characterization of the compound PKF118-310, an antagonist of transcription factor 4 (TCF4)/β-catenin signaling, as inhibitor of KDM4A. PKF118-310 potential inhibitor activity was discovered via virtual screening on the crystal structure of KDM4A. A peptide-based histone trimethylation assay developed in-house confirmed its potent KDM4A inhibitor activity. Its protein target was identified by cellular thermal shift assay experiments. PKF118-310 anticancer activity was observed in both liquid and solid tumor cells, and shown to have a dose- and time-dependent effect. We demonstrate the previously unreported inhibitory action of PKF118-310 on KDM4A. Our findings open up the possibility of developing the first KDM4A-specific inhibitors and derivatives.
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Affiliation(s)
- Gianluigi Franci
- a Dipartimento di Biochimica , Biofisica e Patologia Generale, Seconda Università degli Studi di Napoli , Napoli , Italy
| | - Federica Sarno
- a Dipartimento di Biochimica , Biofisica e Patologia Generale, Seconda Università degli Studi di Napoli , Napoli , Italy
| | - Angela Nebbioso
- a Dipartimento di Biochimica , Biofisica e Patologia Generale, Seconda Università degli Studi di Napoli , Napoli , Italy
| | - Lucia Altucci
- a Dipartimento di Biochimica , Biofisica e Patologia Generale, Seconda Università degli Studi di Napoli , Napoli , Italy
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27
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Wang B, Fan X, Ma C, Lei H, Long Q, Chai Y. Downregulation of KDM4A Suppresses the Survival of Glioma Cells by Promoting Autophagy. J Mol Neurosci. 2016;60:137-144. [PMID: 27514525 DOI: 10.1007/s12031-016-0796-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Accepted: 07/06/2016] [Indexed: 10/21/2022]
Abstract
Glioma is the most common type of primary intracranial tumor and has a poor prognosis. It has been reported that lysine-specific demethylase 4A (KDM4A) can promote tumor progression; however, its role in human glioma remains unclear. Western blot and qRT-PCR analyses showed that KDM4A was highly expressed in U87MG and T98G cells. 48 h after transfection with siKDM4A, the protein level of KDM4A was significantly downregulated. The silenced expression of KDM4A in T98G or U87MG cells inhibited cell viability and invasion, and aggravated cell apoptosis. We found that the siKDM4A led to a significant increase in acidic vesicular organelles (AVOs) and upregulated the expression of autophagy-related proteins, including LC3B-phosphatidylethanolamine conjugate, a cytosolic form of LC3B (LC3B-II/LC3B-I) and Beclin 1 in T98G and U87MG cells. Further studies demonstrated that after pretreatment with 3-MA (3 mmol/L) for 48 h, siKDM4A-transfected cells showed a prominent decrease in LC3B-II/LC3B-I and Beclin 1, accompanied by increased viability and invasion and decreased apoptosis. Our results suggest that the inhibition of KDM4A expression might efficiently suppress glioma cell survival by promoting autophagy, providing a promising agent for treating malignant gliomas.
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28
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Kim TD, Oh S, Lightfoot SA, Shin S, Wren JD, Janknecht R. Upregulation of PSMD10 caused by the JMJD2A histone demethylase. Int J Clin Exp Med 2016; 9:10123-10134. [PMID: 28883898 PMCID: PMC5584593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
PSMD10, also known as gankyrin, is associated with the proteasome and has been shown to be an oncoprotein in the liver. Here, we report that PSMD10 expression is stimulated by the histone demethylase JMJD2A/KDM4A and its interaction partner, the ETV1 transcription factor, in LNCaP prostate cancer cells. Global analysis of expression patterns revealed that PSMD10 mRNA levels are positively correlated with those of both JMJD2A and ETV1. In human prostate tumors, PSMD10 is highly overexpressed at the protein level and correlates with JMJD2A overexpression; further, PSMD10 expression is enhanced in the prostates of transgenic JMJD2A mice. Moreover, PSMD10 is particularly overexpressed in high Gleason score prostate tumors. Downregulation of PSMD10 in LNCaP prostate cancer cells impaired their growth, indicating that PSMD10 may exert a pro-oncogenic function in the prostate. Lastly, we observed that PSMD10 expression is correlated to YAP1, a component of the Hippo signaling pathway and whose gene promoter is regulated by JMJD2A, and that PSMD10 can cooperate with YAP1 in stimulating LNCaP cell growth. Altogether, these data indicate that PSMD10 is a novel downstream effector of JMJD2A and suggest that inhibition of the JMJD2A histone demethylase by small molecule drugs may be effective to curtail the oncogenic activity of PSMD10 in various PSMD10-overexpressing tumors.
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Affiliation(s)
- Tae-Dong Kim
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Sangphil Oh
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Stan A Lightfoot
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Sook Shin
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Jonathan D Wren
- Arthritis & Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
- Stephenson Cancer Center, Oklahoma City, OK 73104, USA
| | - Ralf Janknecht
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Stephenson Cancer Center, Oklahoma City, OK 73104, USA
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29
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Abstract
The proto-oncogene c-Jun plays crucial roles in tumorigenesis, and its aberrant expression has been implicated in many cancers. Previous studies have shown that the c-Jun gene is positively autoregulated by its product. Notably, it has also been reported that c-Jun proteins are enriched in its gene body region. However, the role of c-Jun proteins in its gene body region has yet to be uncovered. HP1a is an evolutionarily conserved heterochromatin-associated protein, which plays an essential role in heterochromatin-mediated gene silencing. Interestingly, accumulating evidence shows that HP1a is also localized to euchromatic regions to positively regulate gene transcription. However, the underlying mechanism has not been defined. In this study, we demonstrate that HP1a is involved in the positive autoregulatory loop of the Jra gene, the c-Jun homolog in Drosophila. Jra recruits the HP1a/KDM4A complex to its gene body region upon osmotic stress to reduce H3K36 methylation levels and disrupt H3K36 methylation-dependent histone deacetylation, resulting in high levels of histone acetylation in the Jra gene body region, thus promoting gene transcription. These results not only expand our knowledge toward the mechanism of c-Jun regulation, but also reveal the mechanism by which HP1a exerts its positive regulatory function in gene expression.
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Affiliation(s)
- Yan Liu
- a College of Life Sciences; Hebei United University ; Tangshan , China
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30
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Abstract
Intra-tumor copy number heterogeneity is commonly observed in cancer; however, the molecular mechanisms that contribute to heterogeneity remain poorly understood. Up-regulation of the histone demethylase KDM4A promotes transient site-specific copy gain (TSSG) in cells; therefore, uncovering how KDM4A levels are controlled is important for understanding the regulation of copy number heterogeneity. Here, we demonstrate that KDM4A is regulated by hsa-mir-23a-3p, hsa-mir-23b-3p, and hsa-mir-137. Altering expression of these microRNAs (miRNAs) regulates KDM4A-dependent TSSG. miRNA inhibition promoted copy gains and increased expression of the drug-resistant oncogene CKS1B, which was further substantiated in primary breast tumors. Consistent with increased CKS1B expression, miRNA inhibition reduced breast cancer cell sensitivity to cisplatin. Our data identify these miRNAs as regulators of TSSG and copy gains of a drug resistance gene.
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Affiliation(s)
- Joshua C Black
- From the Massachusetts General Hospital Cancer Center and Departments of Medicine and
| | - Hailei Zhang
- the Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142
| | - Jaegil Kim
- the Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142
| | - Gad Getz
- the Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142 Pathology, Harvard Medical School, Massachusetts 02129 and
| | - Johnathan R Whetstine
- From the Massachusetts General Hospital Cancer Center and Departments of Medicine and
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31
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Black JC, Atabakhsh E, Kim J, Biette KM, Van Rechem C, Ladd B, Burrowes PD, Donado C, Mattoo H, Kleinstiver BP. Hypoxia drives transient site-specific copy gain and drug-resistant gene expression. Genes Dev. 2015;29:1018-1031. [PMID: 25995187 PMCID: PMC4441050 DOI: 10.1101/gad.259796.115] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Black et al. demonstrate that hypoxia induces transient, site-specific copy gains in primary, nontransformed, and transformed human cells. Hypoxia-driven copy gains are dependent on the KDM4A histone demethylase and are blocked by inhibition of KDM4A with a small molecule or the natural metabolite succinate. Copy number heterogeneity is a prominent feature within tumors. The molecular basis for this heterogeneity remains poorly characterized. Here, we demonstrate that hypoxia induces transient site-specific copy gains (TSSGs) in primary, nontransformed, and transformed human cells. Hypoxia-driven copy gains are not dependent on HIF1α or HIF2α; however, they are dependent on the KDM4A histone demethylase and are blocked by inhibition of KDM4A with a small molecule or the natural metabolite succinate. Furthermore, this response is conserved at a syntenic region in zebrafish cells. Regions with site-specific copy gain are also enriched for amplifications in hypoxic primary tumors. These tumors exhibited amplification and overexpression of the drug resistance gene CKS1B, which we recapitulated in hypoxic breast cancer cells. Our results demonstrate that hypoxia provides a biological stimulus to create transient site-specific copy alterations that could result in heterogeneity within tumors and cell populations. These findings have major implications in our understanding of copy number heterogeneity and the emergence of drug resistance genes in cancer.
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32
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Guerra-Calderas L, González-Barrios R, Herrera LA, Cantú de León D, Soto-Reyes E. The role of the histone demethylase KDM4A in cancer. Cancer Genet 2014; 208:215-24. [PMID: 25633974 DOI: 10.1016/j.cancergen.2014.11.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 10/20/2014] [Accepted: 11/05/2014] [Indexed: 12/31/2022]
Abstract
Histone posttranslational modifications are important components of epigenetic regulation. One extensively studied modification is the methylation of lysine residues. These modifications were thought to be irreversible. However, several proteins with histone lysine demethylase functions have been discovered and characterized. Among these proteins, KDM4A is the first histone lysine demethylase shown to demethylate trimethylated residues. This enzyme plays an important role in gene expression, cellular differentiation, and animal development. Recently, it has also been shown to be involved in cancer. In this review, we focus on describing the structure, mechanisms, and function of KDM4A. We primarily discuss the role of KDM4A in cancer development and the importance of KDM4A as a potential therapeutic target.
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Affiliation(s)
- Lissania Guerra-Calderas
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología-Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Rodrigo González-Barrios
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología-Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Luis A Herrera
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología-Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - David Cantú de León
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología-Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Ernesto Soto-Reyes
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología-Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico.
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