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Noh JK, Woo SR, Kong M, Lee MK, Lee JW, Lee YC, Ko S, Eun Y. Gene signature predicting recurrence in oral squamous cell carcinoma is characterized by increased oxidative phosphorylation. Mol Oncol 2022; 17:134-149. [PMID: 36271693 PMCID: PMC9812830 DOI: 10.1002/1878-0261.13328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 10/09/2022] [Accepted: 10/21/2022] [Indexed: 02/03/2023] Open
Abstract
Although numerous studies have used systemic approaches to identify prognostic predictors in oral squamous cell carcinoma (OSCC), the effectiveness of these approaches has not been assessed clinically. Further, the mechanism underlying malignant behaviors in OSCC is poorly characterized. This study aimed to develop and verify accurate prognostic predictors for OSCC patients and assess the associated biology. We identified an OSCC-recurrence-related gene signature (ORGS) using a Cox regression analysis. Functional enrichment analysis was used to identify enriched pathways and biological processes to reveal the underlying mechanism of OSCC malignant behavior. The ORGS successfully divided OSCC patients into low- and high-risk groups with significantly different overall survivals. Pathway analysis revealed oxidative phosphorylation (OXPHOS) as a signaling pathway associated with the ORGS in OSCC. Interestingly, high OXPHOS status was strongly associated with poor overall survival in OSCC patients. Mediator complex subunit 30 (MED30) was a predicted upstream regulator of OXPHOS, and knockdown of MED30 reduced histone acetylation. We identified that the ORGS was strongly correlated with OXPHOS regulatory processes, suggesting OXPHOS as a key mechanism leading to poor prognosis in OSCC.
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Affiliation(s)
- Joo Kyung Noh
- Department of Biomedical Science and Technology, Graduate SchoolKyung Hee UniversitySeoulKorea
| | - Seon Rang Woo
- Department of Otolaryngology‐Head & Neck Surgery, Kyung Hee University School of MedicineKyung Hee University Medical CenterSeoulKorea
| | - Moonkyoo Kong
- Department of Radiation Oncology, Kyung Hee University School of MedicineKyung Hee University Medical CenterSeoulKorea
| | - Min Kyeong Lee
- Department of Biomedical Science and Technology, Graduate SchoolKyung Hee UniversitySeoulKorea
| | - Jung Woo Lee
- Department of Oral and Maxillofacial Surgery, School of DentistryKyung Hee UniversitySeoulKorea
| | - Young Chan Lee
- Department of Otolaryngology‐Head & Neck Surgery, Kyung Hee University School of MedicineKyung Hee University Medical CenterSeoulKorea
| | - Seong‐Gyu Ko
- Department of Preventive Medicine, College of Korean MedicineKyung Hee UniversitySeoulKorea
| | - Young‐Gyu Eun
- Department of Biomedical Science and Technology, Graduate SchoolKyung Hee UniversitySeoulKorea,Department of Otolaryngology‐Head & Neck Surgery, Kyung Hee University School of MedicineKyung Hee University Medical CenterSeoulKorea
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Shukla A, Srivastava S, Darokar J, Kulshreshtha R. HIF1α and p53 Regulated MED30, a Mediator Complex Subunit, is Involved in Regulation of Glioblastoma Pathogenesis and Temozolomide Resistance. Cell Mol Neurobiol 2020; 41:1521-1535. [PMID: 32705436 DOI: 10.1007/s10571-020-00920-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 07/10/2020] [Indexed: 10/23/2022]
Abstract
Glioblastoma (GBM) is the most common, malignant, and aggressive form of glial cell cancer with unfavorable clinical outcomes. It is believed that a better understanding of the mechanisms of gene deregulation may lead to novel therapeutic approaches for this yet incurable cancer. Mediator complex is a crucial component of enhancer-based gene expression and works as a transcriptional co-activator. Many of the mediator complex subunits are found to be deregulated/mutated in various malignancies; however, their status and role in GBM remains little studied. We report that MED30, a core subunit of the head module, is overexpressed in GBM tissues and cell lines. MED30 was found to be induced by conditions present in the tumor microenvironment such as hypoxia, serum, and glucose deprivation. MED30 harbors hypoxia response elements (HREs) and p53 binding site in its promoter and is induced in a HIF1α and p53 dependent manner. Further, MED30 levels also significantly positively correlated with p53 and HIF1α levels in GBM tissues. Using both MED30 overexpression and knockdown approach, we show that MED30 promotes cell proliferation while reduces the migration capabilities in GBM cell lines. Notably, MED30 was also found to confer sensitivity to chemodrug, temozolomide, in GBM cells and modulate the level of p53 in vitro. Overall, this is the first report showing MED30 overexpression in GBM and its involvement in GBM pathogenesis suggesting its diagnostic and therapeutic potential urging the need for further systematic exploration of MED30 interactome and target networks.
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Affiliation(s)
- Anubha Shukla
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Srishti Srivastava
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Jayant Darokar
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Ritu Kulshreshtha
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, 110016, India.
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3
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Hsieh N, Huang C, Li C, Wang I, Lee M. MED28 and forkhead box M1 (FOXM1) mediate matrix metalloproteinase 2 (MMP2)‐dependent cellular migration in human nonsmall cell lung cancer (NSCLC) cells. J Cell Physiol 2018; 234:11265-11275. [DOI: 10.1002/jcp.27784] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 10/30/2018] [Indexed: 01/09/2023]
Affiliation(s)
- Nien‐Tsu Hsieh
- Department of Nutrition China Medical University Taichung Taiwan, R.O.C
| | - Chun‐Yin Huang
- Department of Nutrition China Medical University Taichung Taiwan, R.O.C
| | - Chien‐Cheng Li
- Institute of Biotechnology, National Tsing Hua University Hsinchu Taiwan, R.O.C
| | - I‐Ching Wang
- Institute of Biotechnology, National Tsing Hua University Hsinchu Taiwan, R.O.C
- Department of Life Sciences National Tsing Hua University Hsinchu Taiwan, R.O.C
| | - Ming‐Fen Lee
- Department of Nutrition China Medical University Taichung Taiwan, R.O.C
- Department of Nutrition and Health Sciences Chang Jung Christian University Tainan Taiwan, R.O.C
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The knockdown of the mediator complex subunit MED30 suppresses the proliferation and migration of renal cell carcinoma cells. Ann Diagn Pathol 2018; 34:18-26. [DOI: 10.1016/j.anndiagpath.2017.12.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 12/17/2017] [Accepted: 12/18/2017] [Indexed: 12/13/2022]
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Chen X, Peng H, Xiao J, Guan A, Xie B, He B, Chen Q. Benzo(a)pyrene enhances the EMT-associated migration of lung adenocarcinoma A549 cells by upregulating Twist1. Oncol Rep 2017; 38:2141-2147. [PMID: 28791412 PMCID: PMC5652958 DOI: 10.3892/or.2017.5874] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 07/20/2017] [Indexed: 12/24/2022] Open
Abstract
Benzo(a)pyrene (BaP), an important toxic component of cigarette smoke, can cause lung cancer and lead to the progression of lung cancer. In the present study, we investigated the effect of BaP on the migration of lung adenocarcinoma A549 cells. BaP (1 µM) promoted the migration of A549 cells in a time-dependent manner and upregulated the expression of the Twist family BHLH transcription factor 1 (Twist1). BaP also induced upregulation of the mesenchymal markers N-cadherin and vimentin and downregulation of the epithelial marker E-cadherin. When the expression of Twist1 was knocked down in A549 cells that were treated with BaP for 4 weeks (A549BaP-4w), the expression of Twist1 decreased, which inhibited the migration capacity of A549BaP-4w cells, the expression of N-cadherin and vimentin was downregulated and the expression of E-cadherin was upregulated. In addition, morphological observations of A549BaP-4w cells revealed that the epithelial characteristics of A549 cells became mesenchymal characteristics. When the expression of Twist1 was knocked down, the A549BaP-4w cells were transformed back to cells with epithelial characteristics. In conclusion, the results from the present study indicate that BaP enhances the epithelial-mesenchymal transition-associated migration of lung adenocarcinoma A549 cells by upregulating Twist1.
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Affiliation(s)
- Xi Chen
- Department of Respiratory Medicine, Xiangya Hospital of Central South University, Changsha, Hunan 410008, P.R. China
| | - Hongbing Peng
- Department of Geriatrics, Respiratory Medicine, Xiangya Hospital of Central South University, Changsha, Hunan 410008, P.R. China
| | - Jian Xiao
- Department of Geriatrics, Respiratory Medicine, Xiangya Hospital of Central South University, Changsha, Hunan 410008, P.R. China
| | - Anqi Guan
- Department of Geriatrics, Respiratory Medicine, Xiangya Hospital of Central South University, Changsha, Hunan 410008, P.R. China
| | - Bin Xie
- Department of Geriatrics, Respiratory Medicine, Xiangya Hospital of Central South University, Changsha, Hunan 410008, P.R. China
| | - Bixiu He
- Department of Geriatrics, Respiratory Medicine, Xiangya Hospital of Central South University, Changsha, Hunan 410008, P.R. China
| | - Qiong Chen
- Department of Geriatrics, Respiratory Medicine, Xiangya Hospital of Central South University, Changsha, Hunan 410008, P.R. China
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Kostrouchová M, Kostrouch D, Chughtai AA, Kaššák F, Novotný JP, Kostrouchová V, Benda A, Krause MW, Saudek V, Kostrouchová M, Kostrouch Z. The nematode homologue of Mediator complex subunit 28, F28F8.5, is a critical regulator of C. elegans development. PeerJ 2017; 5:e3390. [PMID: 28603670 PMCID: PMC5464003 DOI: 10.7717/peerj.3390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 05/08/2017] [Indexed: 11/20/2022] Open
Abstract
The evolutionarily conserved Mediator complex is a critical player in regulating transcription. Comprised of approximately two dozen proteins, the Mediator integrates diverse regulatory signals through direct protein-protein interactions that, in turn, modulate the influence of Mediator on RNA Polymerase II activity. One Mediator subunit, MED28, is known to interact with cytoplasmic structural proteins, providing a potential direct link between cytoplasmic dynamics and the control of gene transcription. Although identified in many animals and plants, MED28 is not present in yeast; no bona fide MED28 has been described previously in Caenorhabditis elegans. Here, we identify bioinformatically F28F8.5, an uncharacterized predicted protein, as the nematode homologue of MED28. As in other Metazoa, F28F8.5 has dual nuclear and cytoplasmic localization and plays critical roles in the regulation of development. F28F8.5 is a vital gene and its null mutants have severely malformed gonads and do not reproduce. F28F8.5 interacts on the protein level with the Mediator subunits MDT-6 and MDT-30. Our results indicate that F28F8.5 is an orthologue of MED28 and suggest that the potential to link cytoplasmic and nuclear events is conserved between MED28 vertebrate and nematode orthologues.
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Affiliation(s)
- Markéta Kostrouchová
- Biocev, First Faculty of Medicine, Charles University, Prague, Czech Republic.,Department of Pathology, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - David Kostrouch
- Biocev, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Ahmed A Chughtai
- Biocev, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Filip Kaššák
- Biocev, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Jan P Novotný
- Biocev, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | | | - Aleš Benda
- Imaging Methods Core Facility, BIOCEV, Faculty of Science, Charles University, Prague, Czech Republic
| | - Michael W Krause
- Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Vladimír Saudek
- Metabolic Research Laboratories, Wellcome Trust-Medical Research Council Institute of Metabolic Science, University of Cambridge, Cambridge, UK
| | - Marta Kostrouchová
- Biocev, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Zdeněk Kostrouch
- Biocev, First Faculty of Medicine, Charles University, Prague, Czech Republic
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