1
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Cannon AC, Budagyan K, Uribe-Alvarez C, Kurimchak AM, Araiza-Olivera D, Cai KQ, Peri S, Zhou Y, Duncan JS, Chernoff J. Unique vulnerability of RAC1-mutant melanoma to combined inhibition of CDK9 and immune checkpoints. Oncogene 2024; 43:729-743. [PMID: 38243078 PMCID: PMC11157427 DOI: 10.1038/s41388-024-02947-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 01/06/2024] [Accepted: 01/09/2024] [Indexed: 01/21/2024]
Abstract
RAC1P29S is the third most prevalent hotspot mutation in sun-exposed melanoma. RAC1 alterations in cancer are correlated with poor prognosis, resistance to standard chemotherapy, and insensitivity to targeted inhibitors. Although RAC1P29S mutations in melanoma and RAC1 alterations in several other cancers are increasingly evident, the RAC1-driven biological mechanisms contributing to tumorigenesis remain unclear. Lack of rigorous signaling analysis has prevented identification of alternative therapeutic targets for RAC1P29S-harboring melanomas. To investigate the RAC1P29S-driven effect on downstream molecular signaling pathways, we generated an inducible RAC1P29S expression melanocytic cell line and performed RNA-sequencing (RNA-seq) coupled with multiplexed kinase inhibitor beads and mass spectrometry (MIBs/MS) to establish enriched pathways from the genomic to proteomic level. Our proteogenomic analysis identified CDK9 as a potential new and specific target in RAC1P29S-mutant melanoma cells. In vitro, CDK9 inhibition impeded the proliferation of in RAC1P29S-mutant melanoma cells and increased surface expression of PD-L1 and MHC Class I proteins. In vivo, combining CDK9 inhibition with anti-PD-1 immune checkpoint blockade significantly inhibited tumor growth only in melanomas that expressed the RAC1P29S mutation. Collectively, these results establish CDK9 as a novel target in RAC1-driven melanoma that can further sensitize the tumor to anti-PD-1 immunotherapy.
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Affiliation(s)
- Alexa C Cannon
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA, USA
- Drexel University College of Medicine, Philadelphia, PA, USA
| | - Konstantin Budagyan
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA, USA
- Drexel University College of Medicine, Philadelphia, PA, USA
| | - Cristina Uribe-Alvarez
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Alison M Kurimchak
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Daniela Araiza-Olivera
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Kathy Q Cai
- Histopathology Facility, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Suraj Peri
- Biostatistics-Bioinformatics, Fox Chase Cancer Center, Philadelphia, PA, USA
- Merck, Bioinformatics Oncology Discovery, Boston, MA, USA
| | - Yan Zhou
- Biostatistics-Bioinformatics, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - James S Duncan
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Jonathan Chernoff
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA, USA.
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2
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Li G, Ma L, Feng C, Yin H, Bao J, Wu D, Zhang Z, Li X, Li Z, Yang C, Wang H, Fang F, Hu X, Li M, Xu L, Xu Y, Liang H, Yang T, Wang J, Pan J. MZ1, a BRD4 inhibitor, exerted its anti-cancer effects by suppressing SDC1 in glioblastoma. BMC Cancer 2024; 24:220. [PMID: 38365636 PMCID: PMC10870565 DOI: 10.1186/s12885-024-11966-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 02/06/2024] [Indexed: 02/18/2024] Open
Abstract
BACKGROUND Glioblastoma (GBM) is a relatively prevalent primary tumor of the central nervous system in children, characterized by its high malignancy and mortality rates, along with the intricate challenges of achieving complete surgical resection. Recently, an increasing number of studies have focused on the crucial role of super-enhancers (SEs) in the occurrence and development of GBM. This study embarks on the task of evaluating the effectiveness of MZ1, an inhibitor of BRD4 meticulously designed to specifically target SEs, within the intricate framework of GBM. METHODS The clinical data of GBM patients was sourced from the Chinese Glioma Genome Atlas (CGGA) and the Gene Expression Profiling Interactive Analysis 2 (GEPIA2), and the gene expression data of tumor cell lines was derived from the Cancer Cell Line Encyclopedia (CCLE). The impact of MZ1 on GBM was assessed through CCK-8, colony formation assays, EdU incorporation analysis, flow cytometry, and xenograft mouse models. The underlying mechanism was investigated through RNA-seq and ChIP-seq analyses. RESULTS In this investigation, we made a noteworthy observation that MZ1 exhibited a substantial reduction in the proliferation of GBM cells by effectively degrading BRD4. Additionally, MZ1 displayed a notable capability in inducing significant cell cycle arrest and apoptosis in GBM cells. These findings were in line with our in vitro outcomes. Notably, MZ1 administration resulted in a remarkable decrease in tumor size within the xenograft model with diminished toxicity. Furthermore, on a mechanistic level, the administration of MZ1 resulted in a significant suppression of pivotal genes closely associated with cell cycle regulation and epithelial-mesenchymal transition (EMT). Interestingly, our analysis of RNA-seq and ChIP-seq data unveiled the discovery of a novel prospective oncogene, SDC1, which assumed a pivotal role in the tumorigenesis and progression of GBM. CONCLUSION In summary, our findings revealed that MZ1 effectively disrupted the aberrant transcriptional regulation of oncogenes in GBM by degradation of BRD4. This positions MZ1 as a promising candidate in the realm of therapeutic options for GBM treatment.
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Affiliation(s)
- Gen Li
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Liya Ma
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, Luoyang, 471023, P.R. China
| | - Chenxi Feng
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Hongli Yin
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Jianping Bao
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Di Wu
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Zimu Zhang
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Xiaolu Li
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Zhiheng Li
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Chun Yang
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Hairong Wang
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Fang Fang
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Xiaohan Hu
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Mei Li
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Lixiao Xu
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Yunyun Xu
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China
| | - Hansi Liang
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, P.R. China
| | - Tianquan Yang
- Department of Neurosurgery, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China.
| | - Jianwei Wang
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China.
| | - Jian Pan
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, 215025, P.R. China.
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3
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Cannon AC, Budagyan K, Uribe-Alvarez C, Kurimchak AM, Araiza-Olivera D, Cai KQ, Peri S, Zhou Y, Duncan JS, Chernoff J. Unique vulnerability of RAC1-mutant melanoma to combined inhibition of CDK9 and immune checkpoints. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.27.546707. [PMID: 37425776 PMCID: PMC10327161 DOI: 10.1101/2023.06.27.546707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
RAC1P29S is the third most prevalent hotspot mutation in sun-exposed melanoma. RAC1 alterations in cancer are correlated with poor prognosis, resistance to standard chemotherapy, and insensitivity to targeted inhibitors. Although RAC1P29S mutations in melanoma and RAC1 alterations in several other cancers are increasingly evident, the RAC1-driven biological mechanisms contributing to tumorigenesis remain unclear. Lack of rigorous signaling analysis has prevented identification of alternative therapeutic targets for RAC1P29S-harboring melanomas. To investigate the RAC1P29S-driven effect on downstream molecular signaling pathways, we generated an inducible RAC1P29S expression melanocytic cell line and performed RNA-sequencing (RNA-seq) coupled with multiplexed kinase inhibitor beads and mass spectrometry (MIBs/MS) to establish enriched pathways from the genomic to proteomic level. Our proteogenomic analysis identified CDK9 as a potential new and specific target in RAC1P29S-mutant melanoma cells. In vitro, CDK9 inhibition impeded the proliferation of in RAC1P29S-mutant melanoma cells and increased surface expression of PD-L1 and MHC Class I proteins. In vivo, combining CDK9 inhibition with anti-PD-1 immune checkpoint blockade significantly inhibited tumor growth only in melanomas that expressed the RAC1P29S mutation. Collectively, these results establish CDK9 as a novel target in RAC1-driven melanoma that can further sensitize the tumor to anti-PD-1 immunotherapy.
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Affiliation(s)
- Alexa C Cannon
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA
- Drexel University College of Medicine, Philadelphia, PA
| | - Konstantin Budagyan
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA
- Drexel University College of Medicine, Philadelphia, PA
| | - Cristina Uribe-Alvarez
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA
| | - Alison M Kurimchak
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA
| | - Daniela Araiza-Olivera
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA
| | - Kathy Q Cai
- Histopathology Facility, Fox Chase Cancer Center, Philadelphia, PA
| | - Suraj Peri
- Biostatistics-Bioinformatics, Fox Chase Cancer Center, Philadelphia, PA
- Current Affiliation: Merck, Bioinformatics Oncology Discovery, Boston, MA
| | - Yan Zhou
- Biostatistics-Bioinformatics, Fox Chase Cancer Center, Philadelphia, PA
| | - James S Duncan
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA
| | - Jonathan Chernoff
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA
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4
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BRD4 promotes resection and homology-directed repair of DNA double-strand breaks. Nat Commun 2022; 13:3016. [PMID: 35641523 PMCID: PMC9156784 DOI: 10.1038/s41467-022-30787-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 05/18/2022] [Indexed: 11/22/2022] Open
Abstract
Double-strand breaks (DSBs) are one of the most toxic forms of DNA damage and represent a major source of genomic instability. Members of the bromodomain and extra-terminal (BET) protein family are characterized as epigenetic readers that regulate gene expression. However, evidence suggests that BET proteins also play a more direct role in DNA repair. Here, we establish a cell-free system using Xenopus egg extracts to elucidate the gene expression-independent functions of BET proteins in DSB repair. We identify the BET protein BRD4 as a critical regulator of homologous recombination and describe its role in stimulating DNA processing through interactions with the SWI/SNF chromatin remodeling complex and resection machinery. These results establish BRD4 as a multifunctional regulator of chromatin binding that links transcriptional activity and homology-directed repair. BRD4 is a multifunctional regulator of chromatin binding that plays a direct role in DNA double-strand break repair. BRD4 interacts with the SWI/SNF chromatin remodeling complex and resection machinery to promote homologous recombination.
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5
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Kang SK, Bae HJ, Kwon WS, Kim TS, Kim KH, Park S, Yu SY, Hwang J, Park J, Chung HC, Rha SY. Inhibition of the bromodomain and extra-terminal family of epigenetic regulators as a promising therapeutic approach for gastric cancer. Cell Oncol (Dordr) 2021; 44:1387-1403. [PMID: 34791636 DOI: 10.1007/s13402-021-00647-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2021] [Indexed: 02/08/2023] Open
Abstract
PURPOSE Epigenetic dysregulation is a common characteristic of cancers, including gastric cancer (GC), and contributes to cancer development and progression. Although the efficacy of BET (an epigenetic regulator) inhibition has been demonstrated in various cancer types, predictive genetic markers of its efficacy in GC are currently lacking. Therefore, we aimed to identify markers that predict the response of BET inhibition in GC and, suggest an effective treatment regimen through combined therapy. METHODS The effect of BET inhibition was evaluated using iBET-151, a small-molecule inhibitor of BET proteins, in a large panel (n = 49) of GC cell lines and xenograft mouse models. Comprehensive genetic information was used to identify cell lines sensitive to iBET-151. Flow cytometry, Western blotting, and colony-formation and migration assays were used to evaluate the effects of iBET-151 and/or paclitaxel. The synergistic effect of iBET-151 and paclitaxel was evaluated using an organoid model. RESULTS We found that iBET-151 showed a modest growth-inhibitory effect in GC cells (73%, 36/49). iBET-151 inhibited tumorigenicity in vitro and significantly promoted cell cycle arrest and apoptosis. Based on comprehensive genetic information analysis in relation to BET family expression, we found that BRD4 was highly expressed in the iBET-151-sensitive cell lines. We also identified WNT5B and IRS2 as potential biomarkers that are predictive for sensitivity to iBET-151. In GC xenograft model mice, iBET-151 significantly decreased tumor volumes and Ki-67 and BRD4 expression. Combination treatment showed that iBET-151 increased the sensitivity of GC cells to paclitaxel in approximately 70% of the cell lines (34/49) tested. iBET-151 plus paclitaxel significantly promoted cell cycle arrest and apoptosis and suppressed c-Myc, Bcl-2 and Bcl-xL expression. In GC organoids, iBET-151 and paclitaxel showed a synergistic effect. CONCLUSIONS Collectively, our data suggest that iBET-151 is a potential therapeutic agent for GC, especially in combination with paclitaxel, and that WNT5B and IRS2 may predict iBET-151 sensitivity.
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Affiliation(s)
- Sun Kyoung Kang
- Songdang Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea
- MD Biolab Co., Ltd, Seoul, Republic of Korea
| | - Hyun Joo Bae
- Songdang Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Woo Sun Kwon
- Songdang Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Tae Soo Kim
- Songdang Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kyoo Hyun Kim
- Songdang Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sejung Park
- Songdang Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
- Department of Biostatistics and Computing, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seo Young Yu
- Songdang Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jihyun Hwang
- Songdang Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Juin Park
- Songdang Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyun Cheol Chung
- Songdang Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Sun Young Rha
- Songdang Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea.
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea.
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea.
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
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6
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Yang H, Wei L, Xun Y, Yang A, You H. BRD4: An emerging prospective therapeutic target in glioma. MOLECULAR THERAPY-ONCOLYTICS 2021; 21:1-14. [PMID: 33851008 PMCID: PMC8010576 DOI: 10.1016/j.omto.2021.03.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Despite advances in treatment, the prognosis for glioma patients remains poor. Bromodomain-containing protein 4 (BRD4), a member of the bromodomain and extraterminal (BET) protein family, plays an important role in controlling oncogene expression and genome stability. In recent years, numerous BRD4 inhibitors have entered clinical trials and achieved exciting results in tumor treatment. Recent clinical studies have shown that BRD4 expression in glioma is significantly higher than in the adjacent normal brain tissue. BRD4 inhibitors effectively penetrate the blood-brain barrier and target glioma tumor tissues but have little effect on normal brain tissues. Thus, BRD4 is a target for the treatment of glioma. In this study, we discuss the progress in the use of BRD4 inhibitors for glioma treatment, their mechanism of action, and their broad potential clinical application.
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Affiliation(s)
- Hua Yang
- Department of Basic Medicine and Biomedical Engineering, School of Medicine, Foshan University, Foshan 528000, Guangdong Province, China
| | - Li Wei
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou 510095, Guangdong Province, China
| | - Yang Xun
- Department of Basic Medicine and Biomedical Engineering, School of Medicine, Foshan University, Foshan 528000, Guangdong Province, China
| | - Anping Yang
- Department of Basic Medicine and Biomedical Engineering, School of Medicine, Foshan University, Foshan 528000, Guangdong Province, China
| | - Hua You
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou 510095, Guangdong Province, China
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7
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Wang J, Liu Z, Zhang C, Wang H, Li A, Liu B, Lian X, Ren Z, Zhang W, Wang Y, Zhang B, Pang B, Gao Y. Abnormal expression of HOXD11 promotes the malignant behavior of glioma cells and leads to poor prognosis of glioma patients. PeerJ 2021; 9:e10820. [PMID: 33614284 PMCID: PMC7877241 DOI: 10.7717/peerj.10820] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 01/02/2021] [Indexed: 12/13/2022] Open
Abstract
Background Homeobox D11 (HOXD11) plays an important role in a variety of cancers, but its precise role in gliomas remains unclear. This study aimed to explore the relationship between HOXD11 and gliomas by combining bioinformatics methods with basic experimental validation. Materials and methods Obtain gene expression information and clinical information of glioma and non-tumor brain tissue samples from multiple public databases such as TCGA (666 glioma samples), CGGA (749 glioma samples), GEPIA(163 glioblastoma samples and 207 normal control samples), GEO (GSE4290 and GSE15824). Nine cases of glioma tissue and five cases of normal control brain tissue were collected from the clinical department of Henan Provincial People’s Hospital for further verification. A series of bioinformatic analysis methods were used to confirm the relationship between HOXD11 expression and overall survival and clinical molecular characteristics of patients with glioma. RT-qPCR was used to verify the change of expression level of HOXD11 in glioma cells and tissues. MTT assay, colony formation assay, wound-healing assay, immunofluorescence staining, flow cytometry and western blotting were used to detect the effect of HOXD11 on the biological behavior of glioma cell line U251. Results The high expression of HOXD11 was significantly related to age, World Health Organization (WHO) grade, chemotherapy status, histological type, and even 1p19q codeletion data and isocitrate dehydrogenase (IDH) mutation. HOXD11, as an independent risk factor, reduces the overall survival of glioma patients and has diagnostic value for the prognosis of glioma. Gene Set Enrichment Analysis (GSEA) showed that HOXD11 was significantly enriched in cell signaling pathway such as cell cycle, DNA replication and so on. Finally, we confirmed that the knockout of HOXD11 can inhibit the proliferation and invasion of U251 glioma cells, and change the biological behavior of tumor cells by preventing the progression of cell cycle. Conclusions HOXD11 may be used as a candidate biomarker for the clinical application of targeted drug and prognostic assessment treatment of glioma. In addition, This study will help to explore the pathological mechanism of glioma.
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Affiliation(s)
- Jialin Wang
- Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China.,Department of Microbiome Laboratory, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Zhendong Liu
- Department of Surgery of Spine and Spinal Cord, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan, China
| | - Cheng Zhang
- North Broward Preparatory School, Nord Anglia Education, Coconut Creek, FL, United States of America
| | - Hongbo Wang
- Henan University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Ang Li
- Department of Surgery of Spine and Spinal Cord, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan, China
| | - Binfeng Liu
- Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Xiaoyu Lian
- Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Zhishuai Ren
- Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Wang Zhang
- Department of Neurosurgery of the First Affiliate Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Yanbiao Wang
- Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Bo Zhang
- Henan University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Bo Pang
- Department of Neurosurgery, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yanzheng Gao
- Department of Surgery of Spine and Spinal Cord, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan, China
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8
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Du Z, Yin S, Song X, Zhang L, Yue S, Jia X, Zhang Y. Identification of Differentially Expressed Genes and Key Pathways in the Dorsal Root Ganglion After Chronic Compression. Front Mol Neurosci 2020; 13:71. [PMID: 32431596 PMCID: PMC7214750 DOI: 10.3389/fnmol.2020.00071] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 04/14/2020] [Indexed: 12/31/2022] Open
Abstract
Neuropathic pain (NP) is caused by primary or secondary impairment of the peripheral or central nervous systems. Its etiology is complex and involves abnormal patterns of gene expression and pathway activation. Using bioinformatics analysis, we aimed to identify NP-associated changes in genes and pathways in L4 and L5 dorsal root ganglia (DRG) in a rat model of NP induced by chronic compression of the DRG (CCD). Genome-wide transcriptional analyses were used to elucidate the molecular mechanisms underlying NP. We screened differentially expressed genes (DEGs) 7 days after CCD in comparison with sham-operated controls. Quantitative real-time polymerase chain reaction (RT-qPCR) and western blotting were used to confirm the presence of key DEGs. Kyoto Encyclopedia of Genes and Genomes (KEGG)-pathway analysis of DEGs and global signal transduction network analysis of DEGs were also conducted. The CCD group developed clear mechanical and thermal allodynia in the ipsilateral hind paw compared with the sham group. This comparison identified 1,887 DEGs, with 1156 upregulated and 731 downregulated DEGs, and 123 DEG-enriched pathways. We identified the key candidate genes that might play a role in the development of NP, namely syndecan 1 (Sdc1), phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit gamma (Pi3k), Janus kinase 2 (Jak2), jun proto-oncogene, AP-1 transcription factor subunit (Jun), and interleukin 6 (IL-6) by analyzing the global signal transduction network. RT-qPCR and western blot analysis confirmed the microarray results. The DEGs Sdc1, Pi3k, Jak2, Jun, and IL-6, and the cytokine signaling pathway, the neuroactive ligand-receptor interaction, the toll-like receptor signaling pathway, and the PI3K-Akt signaling pathway may have decisive modulatory roles in both nerve regeneration and NP. These results provide deeper insight into the mechanism underlying NP and promising therapeutic targets for its treatment.
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Affiliation(s)
- Zhanhui Du
- Department of Physical Medicine & Rehabilitation, Qilu Hospital, Shandong University, Jinan, China.,Heart Center, Qingdao Women and Children's Hospital, Qingdao, China
| | - Sen Yin
- Department of Neurology, Qilu Hospital, Shandong University, Jinan, China
| | - Xiuhui Song
- Department of Neurosurgery, The People's Hospital of Jimo City, Qingdao, China
| | - Lechi Zhang
- Department of Physical Medicine & Rehabilitation, Suzhou Hospital Affiliated to Nanjing Medical University, Suzhou, China
| | - Shouwei Yue
- Department of Physical Medicine & Rehabilitation, Qilu Hospital, Shandong University, Jinan, China
| | - Xiaofeng Jia
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, United States.,Department of Orthopaedics, Anatomy & Neurobiology, University of Maryland School of Medicine, Baltimore, MD, United States.,Departments of Biomedical Engineering, Anesthesiology and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Yang Zhang
- Department of Physical Medicine & Rehabilitation, Qilu Hospital, Shandong University, Jinan, China.,Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, United States
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9
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Wang J, Quan Y, Lv J, Gong S, Dong D. BRD4 promotes glioma cell stemness via enhancing miR-142-5p-mediated activation of Wnt/β-catenin signaling. ENVIRONMENTAL TOXICOLOGY 2020; 35:368-376. [PMID: 31724259 DOI: 10.1002/tox.22873] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/18/2019] [Accepted: 10/26/2019] [Indexed: 06/10/2023]
Abstract
The bromodomain protein BRD4 exerts carcinogenic effects in many cancers. However, its roles in glioma occurrence are still confused. Here, it is found that BRD4 expression is increased in glioma tissues and negatively correlated with the overall survival of glioma patients. We construct cellular experiments indicating that BRD4 promotes glioma cell stemness by analyzing ALDH1 activity, master stemness regulator expression, and sphere formation ability. Mechanistically, BRD4 knockdown triggers a switch of miR-142-5p promoter methylation, which targets Wnt3a and thus further inactivates Wnt/β-catenin signaling. Importantly, inhibition of miR-142-5p or reactivation of Wnt/β-catenin signaling rescues the inhibition of BRD4 knockdown on glioma cell stemness. As a result, these results not only indicate an unforeseen connection between BRD4, miR-142-5p, and Wnt/β-catenin signaling, but also reveal a promising epigenetic-based therapeutic strategy that might be explored for glioma patients.
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Affiliation(s)
- Jubo Wang
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Yu Quan
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Jian Lv
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Shouping Gong
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Danfeng Dong
- Department of Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
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Silva-Evangelista C, Barret E, Ménez V, Merlevede J, Kergrohen T, Saccasyn A, Oberlin E, Puget S, Beccaria K, Grill J, Castel D, Debily MA. A kinome-wide shRNA screen uncovers vaccinia-related kinase 3 (VRK3) as an essential gene for diffuse intrinsic pontine glioma survival. Oncogene 2019; 38:6479-6490. [DOI: 10.1038/s41388-019-0884-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 02/08/2019] [Accepted: 05/01/2019] [Indexed: 12/11/2022]
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11
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LncRNA CASC7 inhibits the progression of glioma via regulating Wnt/β-catenin signaling pathway. Pathol Res Pract 2019; 215:564-570. [DOI: 10.1016/j.prp.2019.01.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 12/26/2018] [Accepted: 01/12/2019] [Indexed: 12/18/2022]
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12
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Donati B, Lorenzini E, Ciarrocchi A. BRD4 and Cancer: going beyond transcriptional regulation. Mol Cancer 2018; 17:164. [PMID: 30466442 PMCID: PMC6251205 DOI: 10.1186/s12943-018-0915-9] [Citation(s) in RCA: 426] [Impact Index Per Article: 71.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 11/07/2018] [Indexed: 12/18/2022] Open
Abstract
BRD4, member of the Bromodomain and Extraterminal (BET) protein family, is largely acknowledged in cancer for its role in super-enhancers (SEs) organization and oncogenes expression regulation. Inhibition of BRD4 shortcuts the communication between SEs and target promoters with a subsequent cell-specific repression of oncogenes to which cancer cells are addicted and cell death. To date, this is the most credited mechanism of action of BET inhibitors, a class of small molecules targeting BET proteins which are currently in clinical trials in several cancer settings. However, recent evidence indicates that BRD4 relevance in cancer goes beyond its role in transcription regulation and identifies this protein as a keeper of genome stability. Indeed, a non-transcriptional role of BRD4 in controlling DNA damage checkpoint activation and repair as well as telomere maintenance has been proposed, throwing new lights into the multiple functions of this protein and opening new perspectives on the use of BETi in cancer. Here we discuss the current available information on non-canonical, non-transcriptional functions of BRD4 and on their implications in cancer biology. Integrating this information with the already known BRD4 role in gene expression regulation, we propose a “common” model to explain BRD4 genomic function. Furthermore, in light of the transversal function of BRD4, we provide new interpretation for the cytotoxic activity of BETi and we discuss new possibilities for a wide and focused employment of these drugs in clinical settings.
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Affiliation(s)
- Benedetta Donati
- Laboratory of Translational Research, Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123, Reggio Emilia, Italy
| | - Eugenia Lorenzini
- Laboratory of Translational Research, Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123, Reggio Emilia, Italy
| | - Alessia Ciarrocchi
- Laboratory of Translational Research, Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123, Reggio Emilia, Italy.
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