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Chen W, Chen Z, Jia Y, Guo Y, Zheng L, Yao S, Shao Y, Li M, Mao R, Jiang Y. Circ_0008657 regulates lung DNA damage induced by hexavalent chromium through the miR-203a-3p/ATM axis. ENVIRONMENT INTERNATIONAL 2024; 185:108515. [PMID: 38394914 DOI: 10.1016/j.envint.2024.108515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 12/17/2023] [Accepted: 02/17/2024] [Indexed: 02/25/2024]
Abstract
Hexavalent chromium [Cr (VI)] is an important environmental pollutant and may cause lung injury when inhaled into the human body. Cr (VI) is genotoxic and can cause DNA damage, although the underlying epigenetic mechanisms remain unclear. To simulate the real-life workplace exposure to Cr (VI), we used a novel exposure dose calculation method. We evaluated the effect of Cr (VI) on DNA damage in human bronchial epithelial cells (16HBE and BEAS-2B) by calculating the equivalent real-time exposure dose of Cr (VI) (0 to 10 μM) in an environmental population. Comet experiments and olive tail moment measurements revealed increased DNA damage in cells exposed to Cr (VI). Cr (VI) treatment increased nuclear γ-H2AX foci and γ-H2AX protein expression, and caused DNA damage in the lung tissues of mice. An effective Cr (VI) dose (6 μM) was determined and used for cell treatment. Cr (VI) exposure upregulated circ_0008657, and knockdown of circ_0008657 decreased Cr (VI)-induced DNA damage, whereas circ_0008657 overexpression had the opposite effect. Mechanistically, we found that circ_0008657 binds to microRNA (miR)-203a-3p and subsequently regulates ATM serine/threonine kinase (ATM), a key protein involved in homologous recombination repair downstream of miR-203a-3p, thereby regulating DNA damage induced by Cr (VI). The present findings suggest that circ_0008657 competitively binds to miR-203a-3p to activate the ATM pathway and regulate the DNA damage response after environmental chemical exposure in vivo and in vitro.
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Affiliation(s)
- Wei Chen
- The Key Laboratory of Advanced Interdisciplinary Studies, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Zehao Chen
- The Key Laboratory of Advanced Interdisciplinary Studies, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yangyang Jia
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yaozheng Guo
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Liting Zheng
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Shuwei Yao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yueting Shao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Meizhen Li
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Rulin Mao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yiguo Jiang
- The Key Laboratory of Advanced Interdisciplinary Studies, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China.
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2
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Tian W, Niu X, Feng F, Wang X, Wang J, Yao W, Zhang P. The promising roles of exosomal microRNAs in osteosarcoma: A new insight into the clinical therapy. Biomed Pharmacother 2023; 163:114771. [PMID: 37119740 DOI: 10.1016/j.biopha.2023.114771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/18/2023] [Accepted: 04/22/2023] [Indexed: 05/01/2023] Open
Abstract
Osteosarcoma is the most common malignant bone sarcoma in children. Chemotherapy drugs resistance significantly hinders the overall survival of patients. Due to high biocompatibility and immunocompatibility, exosomes have been explored extensively. Multiple parent cells can actively secrete numerous exosomes, and the membrane structure of exosomes can protect miRNAs from degradation. Based on these characteristics, exosomal miRNAs play an important role in the occurrence, development, drug resistance. Therefore, in-depth exploration of exosome biogenesis and role of exosomal miRNAs will provide new strategies and targets for understanding the pathogenesis of osteosarcoma and overcoming chemotherapy drug resistance. Moreover, advancing evidences have showed that engineering modification could attribute stronger targeting to exosomes to deliver cargos to recipient cells more effectively. In this review, we focus on the mechanisms of exosomal miRNAs on the occurrence and development of osteosarcoma and the potential to function as tumor biomarkers for diagnosis and prognosis prediction. In addition, we also summarize recent advances in the clinical application values of engineering exosomes to provide novel ideas and directions for overcoming the chemotherapy resistance in osteosarcoma.
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Affiliation(s)
- Wen Tian
- Department of Bone and Soft Tissue Oncology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China
| | - Xiaoying Niu
- Department of Bone and Soft Tissue Oncology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China
| | - Feifei Feng
- Department of Toxicology, College of Public Health, Zhengzhou University, Henan 450001, China
| | - Xin Wang
- Department of Bone and Soft Tissue Oncology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China
| | - Jiaqiang Wang
- Department of Bone and Soft Tissue Oncology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China
| | - Weitao Yao
- Department of Bone and Soft Tissue Oncology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China
| | - Peng Zhang
- Department of Bone and Soft Tissue Oncology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China.
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3
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Song Y, Chen M, Zhang Y, Li J, Liu B, Li N, Chen M, Qiao M, Wang N, Cao Y, Lu S, Chen J, Sun W, Gao F, Wang H. Loss of circSRY reduces γH2AX level in germ cells and impairs mouse spermatogenesis. Life Sci Alliance 2023; 6:6/2/e202201617. [PMID: 36414375 PMCID: PMC9684031 DOI: 10.26508/lsa.202201617] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 10/30/2022] [Accepted: 11/07/2022] [Indexed: 11/23/2022] Open
Abstract
Sry on the Y chromosome is the master switch of sex determination in mammals. It has been well established that Sry encodes a transcription factor that is transiently expressed in somatic cells of the male gonad, leading to the formation of testes. In the testis of adult mice, Sry is expressed as a circular RNA (circRNA) transcript. However, the physiological function of Sry circRNA (circSRY) remains unknown since its discovery in 1993. Here we show that circSRY is mainly expressed in the spermatocytes, but not in mature sperm or somatic cells of the testis. Loss of circSRY led to germ cell apoptosis and the reduction of sperm count in the epididymis. The level of γH2AX was decreased, and failure of XY body formation was noted in circSRY KO germ cells. Further study demonstrated that circSRY directly bound to miR-138-5p in spermatocytes, and in vitro assay suggested that circSRY regulates H2AX mRNA through sponging miR-138-5p. Our study demonstrates that, besides determining sex, Sry also plays an important role in spermatogenesis as a circRNA.
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Affiliation(s)
- Yanze Song
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Min Chen
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Institute of Urology, Peking University Shenzhen Hospital, Shenzhen Peking University-Hong Kong University of Science and Technology Medical Center, Shenzhen, P.R. China
| | | | - Jiayi Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Bowen Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Na Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China
| | - Min Chen
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Miaomiao Qiao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Nan Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Yuanwei Cao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Shan Lu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Jian Chen
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Wen Sun
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China .,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Fei Gao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China .,University of Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Haoyi Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China .,University of Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
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4
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Jiang P, Mao L, Lei X, Luo C, Zhang Y, Zhong X, Yin Z, Xu X, Li D, Zheng Q. miR-1297 inhibits osteosarcoma cell proliferation and growth by targeting CCND2. Am J Cancer Res 2022; 12:3464-3478. [PMID: 35968334 PMCID: PMC9360223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 07/02/2022] [Indexed: 06/15/2023] Open
Abstract
Cyclin D2 (CCND2) is abnormally overexpressed in many tumor types and has been associated with tumor cell proliferation. Although the important role of miR-1297 is well established, the molecular mechanism between CCND2 and miR-1297 in osteosarcoma (OS) has not been determined. In the present study, we found CCND2 was highly expressed in OS cells, and its downregulation suppressed cell proliferation, resulting in G1 phase cell cycle arrest. In contrast, miR-1297 was lowly expressed in OS compared to normal tissue. Several data platforms predicted that CCND2 was a target of miR-1297, which was validated by a dual-luciferase reporter assay that revealed miR-1297 could bind with CCND2-3'UTR. miR-1297 overexpression greatly inhibited CCND2 protein expression and exerted the same phenotypic effect as CCND2 downregulation in OS cells. Furthermore, miR-1297 inhibition could also be rescued by CCND2. Nude mice injected cells stable overexpressing miR-1297 OS cells showed lower size and tumor weight. Moreover, lower fluorescence activity recorded by in vivo imaging system and bone erosion revealed by microCT in the miR-1297 group demonstrated miR-1297 inhibited OS tumor growth via CCND2. Our findings demonstrated that miR-1297 can inhibit proliferation and tumor growth in OS by directly targeting CCND2, which indicates that miR-1297 may represent a novel therapeutic target for OS.
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Affiliation(s)
- Pan Jiang
- Affiliated Hospital of Jiangsu UniversityZhenjiang, China
- Guizhou Orthopedics HospitalGuizhou, China
| | - Lianghao Mao
- Affiliated Hospital of Jiangsu UniversityZhenjiang, China
| | - Xuan Lei
- Affiliated Hospital of Jiangsu UniversityZhenjiang, China
| | | | - Yiming Zhang
- Affiliated Hospital of Jiangsu UniversityZhenjiang, China
| | - Xinyu Zhong
- Affiliated Hospital of Jiangsu UniversityZhenjiang, China
| | - Zhenyu Yin
- Affiliated Hospital of Jiangsu UniversityZhenjiang, China
| | - Xiaofeng Xu
- Affiliated Hospital of Jiangsu UniversityZhenjiang, China
| | - Dapeng Li
- Affiliated Hospital of Jiangsu UniversityZhenjiang, China
| | - Qiping Zheng
- Department of Laboratory Science, School of Medicine, Jiangsu UniversityZhenjiang, China
- Shenzhen Walgenron Bio-Pharm Co., Ltd.Shenzhen 518118, Guangdong, China
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5
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Choi PW, Liu TL, Wong CW, Liu SK, Lum YL, Ming WK. The Dysregulation of MicroRNAs in the Development of Cervical Pre-Cancer—An Update. Int J Mol Sci 2022; 23:ijms23137126. [PMID: 35806128 PMCID: PMC9266862 DOI: 10.3390/ijms23137126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/20/2022] [Accepted: 06/24/2022] [Indexed: 02/01/2023] Open
Abstract
Globally in 2020, an estimated ~600,000 women were diagnosed with and 340,000 women died from cervical cancer. Compared to 2012, the number of cases increased by 7.5% and the number of deaths increased by 17%. MiRNAs are involved in multiple processes in the pathogenesis of cervical cancer. Dysregulation of miRNAs in the pre-stage of cervical cancer is the focus of this review. Here we summarize the dysregulated miRNAs in clinical samples from cervical pre-cancer patients and relate them to the early transformation process owing to human papillomavirus (HPV) infection in the cervical cells. When HPV infects the normal cervical cells, the DNA damage response is initiated with the involvement of HPV’s E1 and E2 proteins. Later, cell proliferation and cell death are affected by the E6 and E7 proteins. We find that the expressions of miRNAs in cervical pre-cancerous tissue revealed by different studies seldom agreed with each other. The discrepancy in sample types, samples’ HPV status, expression measurement, and methods for analysis contributed to the non-aligned results across studies. However, several miRNAs (miR-34a, miR-9, miR-21, miR-145, and miR-375) were found to be dysregulated across multiple studies. In addition, there are hints that the DNA damage response and cell growth response induced by HPV during the early transformation of the cervical cells are related to these miRNAs. Currently, no review articles analyse the relationship between the dysregulated miRNAs in cervical pre-cancerous tissue and their possible roles in the early processes involving HPV’s protein encoded by the early genes and DNA damage response during normal cell transformation. Our review provides insight on spotting miRNAs involved in the early pathogenic processes and pointing out their potential as biomarker targets of cervical pre-cancer.
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Affiliation(s)
- Pui-Wah Choi
- Department of Research and Development, WomenX Biotech Limited, Hong Kong Science and Technology Park, Tai Po, Hong Kong; (P.-W.C.); (C.W.W.); (S.K.L.); (Y.-L.L.)
| | - Tin Lun Liu
- International School, Jinan University, Guangzhou 510632, China;
| | - Chun Wai Wong
- Department of Research and Development, WomenX Biotech Limited, Hong Kong Science and Technology Park, Tai Po, Hong Kong; (P.-W.C.); (C.W.W.); (S.K.L.); (Y.-L.L.)
| | - Sze Kei Liu
- Department of Research and Development, WomenX Biotech Limited, Hong Kong Science and Technology Park, Tai Po, Hong Kong; (P.-W.C.); (C.W.W.); (S.K.L.); (Y.-L.L.)
| | - Yick-Liang Lum
- Department of Research and Development, WomenX Biotech Limited, Hong Kong Science and Technology Park, Tai Po, Hong Kong; (P.-W.C.); (C.W.W.); (S.K.L.); (Y.-L.L.)
| | - Wai-Kit Ming
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong
- Correspondence: ; Tel.: +852-3442-6956
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6
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Ferragut Cardoso AP, Banerjee M, Nail AN, Lykoudi A, States JC. miRNA dysregulation is an emerging modulator of genomic instability. Semin Cancer Biol 2021; 76:120-131. [PMID: 33979676 PMCID: PMC8576067 DOI: 10.1016/j.semcancer.2021.05.004] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/30/2021] [Accepted: 05/03/2021] [Indexed: 12/12/2022]
Abstract
Genomic instability consists of a range of genetic alterations within the genome that contributes to tumor heterogeneity and drug resistance. It is a well-established characteristic of most cancer cells. Genome instability induction results from defects in DNA damage surveillance mechanisms, mitotic checkpoints and DNA repair machinery. Accumulation of genetic alterations ultimately sets cells towards malignant transformation. Recent studies suggest that miRNAs are key players in mediating genome instability. miRNAs are a class of small RNAs expressed in most somatic tissues and are part of the epigenome. Importantly, in many cancers, miRNA expression is dysregulated. Consequently, this review examines the role of miRNA dysregulation as a causal step for induction of genome instability and subsequent carcinogenesis. We focus specifically on mechanistic studies assessing miRNA(s) and specific subtypes of genome instability or known modes of genome instability. In addition, we provide insight on the existing knowledge gaps within the field and possible ways to address them.
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Affiliation(s)
- Ana P Ferragut Cardoso
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, 40202, USA
| | - Mayukh Banerjee
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, 40202, USA
| | - Alexandra N Nail
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, 40202, USA
| | - Angeliki Lykoudi
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, 40202, USA
| | - J Christopher States
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, 40202, USA.
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7
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Shaw A, Gullerova M. Home and Away: The Role of Non-Coding RNA in Intracellular and Intercellular DNA Damage Response. Genes (Basel) 2021; 12:1475. [PMID: 34680868 PMCID: PMC8535248 DOI: 10.3390/genes12101475] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/20/2021] [Accepted: 09/21/2021] [Indexed: 12/14/2022] Open
Abstract
Non-coding RNA (ncRNA) has recently emerged as a vital component of the DNA damage response (DDR), which was previously believed to be solely regulated by proteins. Many species of ncRNA can directly or indirectly influence DDR and enhance DNA repair, particularly in response to double-strand DNA breaks, which may hold therapeutic potential in the context of cancer. These include long non-coding RNA (lncRNA), microRNA, damage-induced lncRNA, DNA damage response small RNA, and DNA:RNA hybrid structures, which can be categorised as cis or trans based on the location of their synthesis relative to DNA damage sites. Mechanisms of RNA-dependent DDR include the recruitment or scaffolding of repair factors at DNA break sites, the regulation of repair factor expression, and the stabilisation of repair intermediates. DDR can also be communicated intercellularly via exosomes, leading to bystander responses in healthy neighbour cells to generate a population-wide response to damage. Many microRNA species have been directly implicated in the propagation of bystander DNA damage, autophagy, and radioresistance, which may prove significant for enhancing cancer treatment via radiotherapy. Here, we review recent developments centred around ncRNA and their contributions to intracellular and intercellular DDR mechanisms.
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Affiliation(s)
| | - Monika Gullerova
- Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK;
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8
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miR-138-5p induces aggressive traits by targeting Trp53 expression in murine melanoma cells, and correlates with poor prognosis of melanoma patients. Neoplasia 2021; 23:823-834. [PMID: 34246986 PMCID: PMC8274245 DOI: 10.1016/j.neo.2021.05.015] [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: 02/19/2021] [Revised: 05/10/2021] [Accepted: 05/31/2021] [Indexed: 11/20/2022] Open
Abstract
Deregulation of miRNAs contributes to the development of distinct cancer types, including melanoma, an aggressive form of skin cancer characterized by high metastatic potential and poor prognosis. The expression of a set of 580 miRNAs was investigated in a model of murine melanoma progression, comprising non-metastatic (4C11-) and metastatic melanoma (4C11+) cells. A significant increase in miR-138-5p expression was found in the metastatic 4C11+ melanoma cells compared to 4C11-, which prompted us to investigate its role in melanoma aggressiveness. Functional assays, including anoikis resistance, colony formation, collective migration, serum-deprived growth capacity, as well as in vivo tumor growth and experimental metastasis were performed in 4C11- cells stably overexpressing miR-138-5p. miR-138-5p induced an aggressive phenotype in mouse melanoma cell lines leading to increased proliferation, migration and cell viability under stress conditions. Moreover, by overexpressing miR-138-5p, low-growing and non-metastatic 4C11- cells became highly proliferative and metastatic in vivo, similar to the metastatic 4C11+ cells. Luciferase reporter analysis identified the tumor suppressor Trp53 as a direct target of miR-138-5p. Using data sets from independent melanoma cohorts, miR-138-5p and P53 expression were also found deregulated in human melanoma samples, with their levels negatively and positively correlated with prognosis, respectively. Our data shows that the overexpression of miR-138-5p contributes to melanoma metastasis through the direct suppression of Trp53.
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9
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Zhong Q, Xiong Y, Ling C, Qian Y, Zhao X, Yang H. Enhancing the sensitivity of ovarian cancer cells to olaparib via microRNA-20b-mediated cyclin D1 targeting. Exp Biol Med (Maywood) 2021; 246:1297-1306. [PMID: 34092127 PMCID: PMC8371305 DOI: 10.1177/1535370221994077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 01/21/2021] [Indexed: 02/05/2023] Open
Abstract
We previously reported that cyclin D1 silencing interferes with RAD51 accumulation and increases the sensitivity of BRCA1 wild-type ovarian cancer cells to olaparib. However, the mechanisms associated with cyclin D1 overexpression in ovarian cancer are not fully understood. TargetScan predicted the potential binding sites for microRNA-20b (miR-20b) and the 3'-untranslated region of cyclin D1 mRNA; thus, we used luciferase reporter assay to verify those binding sites. The Kaplan-Meier method and log-rank test were used to examine the relationship between miR-20b and progression-free survival of ovarian cancer patients in The Cancer Genome Atlas (n = 367) dataset. In vitro experiments were performed to evaluate the effects of miR-20b on cyclin D1 expression, cell cycle and response to olaparib. A peritoneal cavity metastasis model of ovarian cancer was established to determine the effect of miR-20b on the sensitivity of olaparib. Immunohistochemistry was performed to evaluate molecular mechanisms. In this work, we demonstrated that miR-20b down-regulates cyclin D1, increases the sensitivity of ovarian cancer cells to olaparib, reduces the expression of RAD51, and induces cell cycle arrest in G0/G1 phase. Ovarian cancer patients with higher expression of miR-20b had significantly longer progression-free survival. These results indicate that miR-20b may be a potential clinical indicator for the sensitivity of ovarian cancer to olaparib and the survival of ovarian cancer patients. Our findings suggest that miR-20b may have therapeutic value in combination with olaparib treatment for ovarian cancer.
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Affiliation(s)
- Qian Zhong
- Department of Gynecology and Obstetrics, West China Second University Hospital of Sichuan University, Chengdu, P.R. China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, P.R. China
| | - Ying Xiong
- Department of Gynecology and Obstetrics, West China Second University Hospital of Sichuan University, Chengdu, P.R. China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, P.R. China
| | - Chen Ling
- Department of Gynecology and Obstetrics, West China Second University Hospital of Sichuan University, Chengdu, P.R. China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, P.R. China
| | - Yanping Qian
- Department of Gynecology and Obstetrics, West China Second University Hospital of Sichuan University, Chengdu, P.R. China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, P.R. China
| | - Xia Zhao
- Department of Gynecology and Obstetrics, West China Second University Hospital of Sichuan University, Chengdu, P.R. China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, P.R. China
| | - Hanshuo Yang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, P.R. China
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10
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Gajek A, Gralewska P, Marczak A, Rogalska A. Current Implications of microRNAs in Genome Stability and Stress Responses of Ovarian Cancer. Cancers (Basel) 2021; 13:cancers13112690. [PMID: 34072593 PMCID: PMC8199164 DOI: 10.3390/cancers13112690] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 12/16/2022] Open
Abstract
Genomic alterations and aberrant DNA damage signaling are hallmarks of ovarian cancer (OC), the leading cause of mortality among gynecological cancers worldwide. Owing to the lack of specific symptoms and late-stage diagnosis, survival chances of patients are significantly reduced. Poly (ADP-ribose) polymerase (PARP) inhibitors and replication stress response inhibitors present attractive therapeutic strategies for OC. Recent research has focused on ovarian cancer-associated microRNAs (miRNAs) that play significant regulatory roles in various cellular processes. While miRNAs have been shown to participate in regulation of tumorigenesis and drug responses through modulating the DNA damage response (DDR), little is known about their potential influence on sensitivity to chemotherapy. The main objective of this review is to summarize recent findings on the utility of miRNAs as cancer biomarkers, in particular, ovarian cancer, and their regulation of DDR or modified replication stress response proteins. We further discuss the suppressive and promotional effects of various miRNAs on ovarian cancer and their participation in cell cycle disturbance, response to DNA damage, and therapeutic functions in multiple cancer types, with particular focus on ovarian cancer. Improved understanding of the mechanisms by which miRNAs regulate drug resistance should facilitate the development of effective combination therapies for ovarian cancer.
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11
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Murashko MM, Stasevich EM, Schwartz AM, Kuprash DV, Uvarova AN, Demin DE. The Role of RNA in DNA Breaks, Repair and Chromosomal Rearrangements. Biomolecules 2021; 11:biom11040550. [PMID: 33918762 PMCID: PMC8069526 DOI: 10.3390/biom11040550] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 03/31/2021] [Accepted: 04/07/2021] [Indexed: 12/28/2022] Open
Abstract
Incorrect reparation of DNA double-strand breaks (DSB) leading to chromosomal rearrangements is one of oncogenesis's primary causes. Recently published data elucidate the key role of various types of RNA in DSB formation, recognition and repair. With growing interest in RNA biology, increasing RNAs are classified as crucial at the different stages of the main pathways of DSB repair in eukaryotic cells: nonhomologous end joining (NHEJ) and homology-directed repair (HDR). Gene mutations or variation in expression levels of such RNAs can lead to local DNA repair defects, increasing the chromosome aberration frequency. Moreover, it was demonstrated that some RNAs could stimulate long-range chromosomal rearrangements. In this review, we discuss recent evidence demonstrating the role of various RNAs in DSB formation and repair. We also consider how RNA may mediate certain chromosomal rearrangements in a sequence-specific manner.
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Affiliation(s)
- Matvey Mikhailovich Murashko
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (M.M.M.); (E.M.S.); (A.M.S.); (D.V.K.); (A.N.U.)
| | - Ekaterina Mikhailovna Stasevich
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (M.M.M.); (E.M.S.); (A.M.S.); (D.V.K.); (A.N.U.)
| | - Anton Markovich Schwartz
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (M.M.M.); (E.M.S.); (A.M.S.); (D.V.K.); (A.N.U.)
- Moscow Institute of Physics and Technology, Department of Molecular and Biological Physics, 141701 Moscow, Russia
| | - Dmitriy Vladimirovich Kuprash
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (M.M.M.); (E.M.S.); (A.M.S.); (D.V.K.); (A.N.U.)
| | - Aksinya Nicolaevna Uvarova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (M.M.M.); (E.M.S.); (A.M.S.); (D.V.K.); (A.N.U.)
| | - Denis Eriksonovich Demin
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; (M.M.M.); (E.M.S.); (A.M.S.); (D.V.K.); (A.N.U.)
- Correspondence:
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12
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Sadoughi F, Maleki Dana P, Asemi Z, Yousefi B. DNA damage response and repair in osteosarcoma: Defects, regulation and therapeutic implications. DNA Repair (Amst) 2021; 102:103105. [PMID: 33836418 DOI: 10.1016/j.dnarep.2021.103105] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 03/20/2021] [Indexed: 01/03/2023]
Abstract
Osteosarcoma (OS) is the most common primary bone malignancy in children and adolescents which has the survival rate of 20% in its advanced stages. Osteosarcomas are mostly resistance to our common treatments. DNA damage response (DDR) is a specialized multistep process containing abundant proteins which are necessary for the survival of any cell and organism. DDR machinery detects a diversity of DNA lesions and inhibits the cell cycle progression if these lesions are not repairable. DDR is involved in aging, age-related diseases, and cancer. In recent years, DDR inhibitors have gained the attention of researches due to their potentials in offering novel therapeutic targets and improving the response of many cancers to either chemo- or radio-therapy. In this regard, we tried to gather a great body of evidence about the role of DDR ingredients in osteosarcoma's initiation/progression, prognosis, and treatment.
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Affiliation(s)
- Fatemeh Sadoughi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
| | - Parisa Maleki Dana
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
| | - Bahman Yousefi
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Biochemistry, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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13
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Swati, Chadha VD. Role of epigenetic mechanisms in propagating off-targeted effects following radiation based therapies - A review. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2021; 787:108370. [PMID: 34083045 DOI: 10.1016/j.mrrev.2021.108370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 01/19/2021] [Accepted: 01/21/2021] [Indexed: 12/17/2022]
Abstract
Despite being an important diagnostic and treatment modality, ionizing radiation (IR) is also known to cause genotoxicity and multiple side effects leading to secondary carcinogenesis. While modern cancer radiation therapy has improved patient recovery and enhanced survival rates, the risk of radiation-related adverse effects has become a growing challenge. It is now well-accepted that IR-induced side effects are not exclusively restricted to exposed cells but also spread to distant 'bystander' cells and even to the unexposed progeny of the irradiated cells. These 'off-targeted' effects involve a plethora of molecular events depending on the type of radiation and tumor tissue background. While the mechanisms by which off-targeted effects arise remain obscure, emerging evidence based on the non-mendelian inheritance of various manifestations of them as well as their persistence for longer periods supports a contribution of epigenetic factors. This review focuses on the major epigenetic phenomena including DNA methylation, histone modifications, and small RNA mediated silencing and their versatile role in the manifestation of IR induced off-targeted effects. As short- and long-range communication vehicles respectively, the role of gap junctions and exosomes in spreading these epigenetic-alteration driven off-targeted effects is also discussed. Furthermore, this review emphasizes the possible therapeutic potentials of these epigenetic mechanisms and how beneficial outcomes could potentially be achieved by targeting various signaling molecules involved in these mechanisms.
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Affiliation(s)
- Swati
- Centre for Nuclear Medicine (U.I.E.A.S.T), South Campus, Panjab University, Sector 25, Chandigarh, 160014, India.
| | - Vijayta D Chadha
- Centre for Nuclear Medicine (U.I.E.A.S.T), South Campus, Panjab University, Sector 25, Chandigarh, 160014, India.
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14
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Ketley RF, Gullerova M. Jack of all trades? The versatility of RNA in DNA double-strand break repair. Essays Biochem 2020; 64:721-735. [PMID: 32618336 PMCID: PMC7592198 DOI: 10.1042/ebc20200008] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/08/2020] [Accepted: 06/11/2020] [Indexed: 12/20/2022]
Abstract
The mechanisms by which RNA acts in the DNA damage response (DDR), specifically in the repair of DNA double-strand breaks (DSBs), are emerging as multifaceted and complex. Different RNA species, including but not limited to; microRNA (miRNA), long non-coding RNA (lncRNA), RNA:DNA hybrid structures, the recently identified damage-induced lncRNA (dilncRNA), damage-responsive transcripts (DARTs), and DNA damage-dependent small RNAs (DDRNAs), have been shown to play integral roles in the DSB response. The diverse properties of these RNAs, such as sequence, structure, and binding partners, enable them to fulfil a variety of functions in different cellular contexts. Additionally, RNA can be modified post-transcriptionally, a process which is regulated in response to cellular stressors such as DNA damage. Many of these mechanisms are not yet understood and the literature contradictory, reflecting the complexity and expansive nature of the roles of RNA in the DDR. However, it is clear that RNA is pivotal in ensuring the maintenance of genome integrity. In this review, we will discuss and summarise recent evidence which highlights the roles of these various RNAs in preserving genomic integrity, with a particular focus on the emerging role of RNA in the DSB repair response.
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Affiliation(s)
- Ruth F Ketley
- Sir William Dunn School of Pathology, South Parks Road, Oxford OX1 3RE, United Kingdom
| | - Monika Gullerova
- Sir William Dunn School of Pathology, South Parks Road, Oxford OX1 3RE, United Kingdom
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15
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Zhang C, Wang Q, Zhou X, Zhang L, Yao Y, Gu J, Chen H, Qian J, Luo C, Bai Q, Hu G. MicroRNA‑138 modulates glioma cell growth, apoptosis and invasion through the suppression of the AKT/mTOR signalling pathway by targeting CREB1. Oncol Rep 2020; 44:2559-2568. [PMID: 33125147 PMCID: PMC7640360 DOI: 10.3892/or.2020.7809] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 09/14/2020] [Indexed: 12/17/2022] Open
Abstract
Alterations in the expression of microRNA (miR)-138 have been demonstrated to result in the development of several malignant tumours. However, the possible function of miR-138 in human glioma cells remains unclear. The present study demonstrated that miR-138 was significantly downregulated in 48 human glioma specimens by quantitative PCR analysis. The upregulation of miR-138 exerted significant antiproliferative and anti-invasive effects on glioma cells and promoted their apoptosis. In addition, cAMP response element-binding protein 1 (CREB1) was confirmed as a direct target gene of miR-138 by luciferase gene reporter assay, and the antitumour effect of miR-138 on glioma cells was significantly reversed by CREB1 overexpression. Moreover, the molecular mechanisms underlying the tumour-suppressive role of miR-138 in malignant glioma may be associated with the dephosphorylation of AKT/mTOR caused by the miR-138 upregulation-induced decrease in CREB1 expression in glioma cells. The results of the present study indicated that miR-138 may affect CREB1/AKT/mTOR signalling to regulate the proliferation, apoptosis and invasion of glioma cells and the malignant progression of glioma, thereby suggesting that miR-138 may be a potential target for the treatment of gliomas.
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Affiliation(s)
- Chi Zhang
- Department of Neurosurgery, Changzheng Hospital, Navy Medical University, Shanghai 200003, P.R. China
| | - Qi Wang
- Department of Neurosurgery, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, P.R. China
| | - Xiaowen Zhou
- Department of Neurology, Changzheng Hospital, Navy Medical University, Shanghai 200003, P.R. China
| | - Lei Zhang
- Department of Neurosurgery, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, P.R. China
| | - Ying Yao
- Department of Operating Room, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, P.R. China
| | - Juan Gu
- Department of Operating Room, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, P.R. China
| | - Huairui Chen
- Department of Neurosurgery, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, P.R. China
| | - Jun Qian
- Department of Neurosurgery, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, P.R. China
| | - Chun Luo
- Department of Neurosurgery, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, P.R. China
| | - Qingke Bai
- Department of Neurology, Pudong People's Hospital, Shanghai 201200, P.R. China
| | - Guohan Hu
- Department of Neurosurgery, Changzheng Hospital, Navy Medical University, Shanghai 200003, P.R. China
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16
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Involvement of Differentially Expressed microRNAs in the PEGylated Liposome Encapsulated 188Rhenium-Mediated Suppression of Orthotopic Hypopharyngeal Tumor. Molecules 2020; 25:molecules25163609. [PMID: 32784458 PMCID: PMC7463599 DOI: 10.3390/molecules25163609] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/30/2020] [Accepted: 08/06/2020] [Indexed: 12/11/2022] Open
Abstract
Hypopharyngeal cancer (HPC) accounts for the lowest survival rate among all types of head and neck cancers (HNSCC). However, the therapeutic approach for HPC still needs to be investigated. In this study, a theranostic 188Re-liposome was prepared to treat orthotopic HPC tumors and analyze the deregulated microRNA expressive profiles. The therapeutic efficacy of 188Re-liposome on HPC tumors was evaluated using bioluminescent imaging followed by next generation sequencing (NGS) analysis, in order to address the deregulated microRNAs and associated signaling pathways. The differentially expressed microRNAs were also confirmed using clinical HNSCC samples and clinical information from The Cancer Genome Atlas (TCGA) database. Repeated doses of 188Re-liposome were administrated to tumor-bearing mice, and the tumor growth was apparently suppressed after treatment. For NGS analysis, 13 and 9 microRNAs were respectively up-regulated and down-regulated when the cutoffs of fold change were set to 5. Additionally, miR-206-3p and miR-142-5p represented the highest fold of up-regulation and down-regulation by 188Re-liposome, respectively. According to Differentially Expressed MiRNAs in human Cancers (dbDEMC) analysis, most of 188Re-liposome up-regulated microRNAs were categorized as tumor suppressors, while down-regulated microRNAs were oncogenic. The KEGG pathway analysis showed that cancer-related pathways and olfactory and taste transduction accounted for the top pathways affected by 188Re-liposome. 188Re-liposome down-regulated microRNAs, including miR-143, miR-6723, miR-944, and miR-136 were associated with lower survival rates at a high expressive level. 188Re-liposome could suppress the HPC tumors in vivo, and the therapeutic efficacy was associated with the deregulation of microRNAs that could be considered as a prognostic factor.
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17
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Li D, Lopez A, Sandoval C, Nichols Doyle R, Fregoso OI. HIV Vpr Modulates the Host DNA Damage Response at Two Independent Steps to Damage DNA and Repress Double-Strand DNA Break Repair. mBio 2020; 11:e00940-20. [PMID: 32753492 PMCID: PMC7407082 DOI: 10.1128/mbio.00940-20] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 07/02/2020] [Indexed: 12/27/2022] Open
Abstract
The DNA damage response (DDR) is a signaling cascade that is vital to ensuring the fidelity of the host genome in the presence of genotoxic stress. Growing evidence has emphasized the importance of both activation and repression of the host DDR by diverse DNA and RNA viruses. Previous work has shown that HIV-1 is also capable of engaging the host DDR, primarily through the conserved accessory protein Vpr. However, the extent of this engagement has remained unclear. Here, we show that HIV-1 and HIV-2 Vpr directly induce DNA damage and stall DNA replication, leading to the activation of several markers of double- and single-strand DNA breaks. Despite causing damage and activating the DDR, we found that Vpr represses the repair of double-strand breaks (DSB) by inhibiting homologous recombination (HR) and nonhomologous end joining (NHEJ). Mutational analyses of Vpr revealed that DNA damage and DDR activation are independent from repression of HR and Vpr-mediated cell cycle arrest. Moreover, we show that repression of HR does not require cell cycle arrest but instead may precede this long-standing enigmatic Vpr phenotype. Together, our data uncover that Vpr globally modulates the host DDR at at least two independent steps, offering novel insight into the primary functions of lentiviral Vpr and the roles of the DNA damage response in lentiviral replication.IMPORTANCE The DNA damage response (DDR) is a signaling cascade that safeguards the genome from genotoxic agents, including human pathogens. However, the DDR has also been utilized by many pathogens, such as human immunodeficiency virus (HIV), to enhance infection. To properly treat HIV-positive individuals, we must understand how the virus usurps our own cellular processes. Here, we have found that an important yet poorly understood gene in HIV, Vpr, targets the DDR at two unique steps: it causes damage and activates DDR signaling, and it represses the ability of cells to repair this damage, which we hypothesize is central to the primary function of Vpr. In clarifying these important functions of Vpr, our work highlights the multiple ways human pathogens engage the DDR and further suggests that modulation of the DDR is a novel way to help in the fight against HIV.
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Affiliation(s)
- Donna Li
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, California, USA
| | - Andrew Lopez
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, California, USA
- Molecular Biology Institute, University of California, Los Angeles, California, USA
| | - Carina Sandoval
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, California, USA
- Molecular Biology Institute, University of California, Los Angeles, California, USA
| | - Randilea Nichols Doyle
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, California, USA
| | - Oliver I Fregoso
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, California, USA
- Molecular Biology Institute, University of California, Los Angeles, California, USA
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18
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Song N, Li P, Song P, Li Y, Zhou S, Su Q, Li X, Yu Y, Li P, Feng M, Zhang M, Lin W. MicroRNA-138-5p Suppresses Non-small Cell Lung Cancer Cells by Targeting PD-L1/PD-1 to Regulate Tumor Microenvironment. Front Cell Dev Biol 2020; 8:540. [PMID: 32754587 PMCID: PMC7365935 DOI: 10.3389/fcell.2020.00540] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 06/09/2020] [Indexed: 01/05/2023] Open
Abstract
Non-small cell lung cancer (NSCLC) is still challenging for treatment owing to immune tolerance and evasion. MicroRNA-138 (miR-138) not only acts as a tumor suppressor to inhibit tumor cell proliferation and migration but also regulates immune response. The regulatory mechanism of miR-138 in NSCLC remains not very clear. Herein, we demonstrated that miR-138-5p treatment decreased the growth of tumor cells and increased the number of tumor-infiltrated DCs. miR-138-5p not only down-regulated the expression of cyclin D3 (CCND3), CCD20, Ki67, and MCM in A549/3LL cells, but also regulated the maturation of DCs in A549-bearing nude mice and the 3LL-bearing C57BL/6 mouse model, and DCs’ capability to enhance T cells to kill tumor cells. Furthermore, miR-138-5p was found to target PD-L1 to down-regulate PD-L1 on tumor cells to reduce the expression of Ki67 and MCM in tumor cells and decrease the tolerance effect on DCs. miR-138-5p also directly down-regulates the expression of PD-L1 and PD-1 on DCs and T cells. Similar results were obtained from isolated human non-small cell lung cancer (NSCLC) cells and DCs. Thus, miR-138-5p inhibits tumor growth and activates the immune system by down-regulating PD-1/PD-L1 and it is a promising therapeutic target for NSCLC.
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Affiliation(s)
- Nannan Song
- Institute of Basic Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical School, Jinan, China
| | - Peng Li
- Institute of Basic Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical School, Jinan, China
| | - Pingping Song
- Shandong Cancer Hospital and Institute, Shandong First Medical University & Shandong Academy of Medical School, Jinan, China
| | - Yintao Li
- Shandong Cancer Hospital and Institute, Shandong First Medical University & Shandong Academy of Medical School, Jinan, China
| | - Shuping Zhou
- Institute of Basic Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical School, Jinan, China
| | - Qinghong Su
- Institute of Basic Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical School, Jinan, China
| | - Xiaofan Li
- Institute of Basic Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical School, Jinan, China
| | - Yong Yu
- Institute of Basic Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical School, Jinan, China
| | - Pengfei Li
- Departments of Medicine, Tibet Nationalities University, Xianyang, China
| | - Meng Feng
- Institute of Basic Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical School, Jinan, China.,School of Medicine and Life Sciences, Shandong Academy of Medical Sciences, Jinan University, Jinan, China
| | - Min Zhang
- Departments of Medicine, Tibet Nationalities University, Xianyang, China
| | - Wei Lin
- Institute of Basic Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical School, Jinan, China
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19
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Regulation of DNA Damage Response and Homologous Recombination Repair by microRNA in Human Cells Exposed to Ionizing Radiation. Cancers (Basel) 2020; 12:cancers12071838. [PMID: 32650508 PMCID: PMC7408912 DOI: 10.3390/cancers12071838] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/26/2020] [Accepted: 06/29/2020] [Indexed: 12/12/2022] Open
Abstract
Ionizing radiation may be of both artificial and natural origin and causes cellular damage in living organisms. Radioactive isotopes have been used significantly in cancer therapy for many years. The formation of DNA double-strand breaks (DSBs) is the most dangerous effect of ionizing radiation on the cellular level. After irradiation, cells activate a DNA damage response, the molecular path that determines the fate of the cell. As an important element of this, homologous recombination repair is a crucial pathway for the error-free repair of DNA lesions. All components of DNA damage response are regulated by specific microRNAs. MicroRNAs are single-stranded short noncoding RNAs of 20–25 nt in length. They are directly involved in the regulation of gene expression by repressing translation or by cleaving target mRNA. In the present review, we analyze the biological mechanisms by which miRNAs regulate cell response to ionizing radiation-induced double-stranded breaks with an emphasis on DNA repair by homologous recombination, and its main component, the RAD51 recombinase. On the other hand, we discuss the ability of DNA damage response proteins to launch particular miRNA expression and modulate the course of this process. A full understanding of cell response processes to radiation-induced DNA damage will allow us to develop new and more effective methods of ionizing radiation therapy for cancers, and may help to develop methods for preventing the harmful effects of ionizing radiation on healthy organisms.
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20
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Podralska M, Ciesielska S, Kluiver J, van den Berg A, Dzikiewicz-Krawczyk A, Slezak-Prochazka I. Non-Coding RNAs in Cancer Radiosensitivity: MicroRNAs and lncRNAs as Regulators of Radiation-Induced Signaling Pathways. Cancers (Basel) 2020; 12:E1662. [PMID: 32585857 PMCID: PMC7352793 DOI: 10.3390/cancers12061662] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/19/2020] [Accepted: 06/21/2020] [Indexed: 02/07/2023] Open
Abstract
Radiotherapy is a cancer treatment that applies high doses of ionizing radiation to induce cell death, mainly by triggering DNA double-strand breaks. The outcome of radiotherapy greatly depends on radiosensitivity of cancer cells, which is determined by multiple proteins and cellular processes. In this review, we summarize current knowledge on the role of microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), in determining the response to radiation. Non-coding RNAs modulate ionizing radiation response by targeting key signaling pathways, including DNA damage repair, apoptosis, glycolysis, cell cycle arrest, and autophagy. Additionally, we indicate miRNAs and lncRNAs that upon overexpression or inhibition alter cellular radiosensitivity. Current data indicate the potential of using specific non-coding RNAs as modulators of cellular radiosensitivity to improve outcome of radiotherapy.
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Affiliation(s)
- Marta Podralska
- Institute of Human Genetics, Polish Academy of Sciences, 60-479 Poznań, Poland;
| | - Sylwia Ciesielska
- Department of Systems Biology and Engineering, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, 44-100 Gliwice, Poland;
| | - Joost Kluiver
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center, Groningen, 9700RB Groningen, The Netherlands; (J.K.); (A.v.d.B.)
| | - Anke van den Berg
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center, Groningen, 9700RB Groningen, The Netherlands; (J.K.); (A.v.d.B.)
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21
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Xu S, Gong Y, Yin Y, Xing H, Zhang N. The multiple function of long noncoding RNAs in osteosarcoma progression, drug resistance and prognosis. Biomed Pharmacother 2020; 127:110141. [PMID: 32334375 DOI: 10.1016/j.biopha.2020.110141] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 03/22/2020] [Accepted: 03/30/2020] [Indexed: 12/16/2022] Open
Abstract
Osteosarcoma is a bone tumor prevalent in children and young adults. LncRNAs are a family of non-protein-coding transcripts longer than 200 nucleotides. The tumor-related pathological functions of lncRNAs include proliferation, migration, and chemotherapy resistance, all of which have been widely acknowledged in research on osteosarcoma. In addition, compelling evidence suggests that lncRNAs could serve as diagnostic indicators, prognostic biomarkers, and targets for disease treatment. In this review, we systematically summarize how lncRNAs regulate tumorigenesis, invasion and therapeutic resistance. By deepening our knowledge of the relationship between lncRNAs and osteosarcoma, we hope to translate research findings into clinical applications as soon as possible.
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Affiliation(s)
- Shengjie Xu
- Department of Cardiology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Yingchao Gong
- Department of Cardiology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Ying Yin
- Department of Gastroenterology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
| | - Hongyuan Xing
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, China
| | - Ning Zhang
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, China.
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22
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Wu CH, Chen CY, Yeh CT, Lin KH. Radiosensitization of Hepatocellular Carcinoma through Targeting Radio-Associated MicroRNA. Int J Mol Sci 2020; 21:ijms21051859. [PMID: 32182776 PMCID: PMC7084923 DOI: 10.3390/ijms21051859] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/03/2020] [Accepted: 03/06/2020] [Indexed: 12/12/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the fourth leading cause of cancer-related deaths worldwide. For patients who are resistant to monotherapy, multimodal therapy is a basic oncologic principle that incorporates surgery, radiotherapy (RT), and chemotherapy providing survival benefits for patients with most types of cancer. Although liver has low tolerance for radiation, high-precision RT for local HCC minimizes the likelihood of radiation-induced liver disease (RILD) in noncancerous liver tissue. RT have several therapeutic benefits, including the down-staging of tumors to make them resectable and repression of metastasis. The DNA damage response (DDR) is a cellular response to irradiation (IR), including DNA repair of injured cells and induction of programmed cell death, thereby resulting in maintenance of cell homeostasis. Molecules that block the activity of proteins in DDR pathways have been found to enhance radiotherapeutic effects. These molecules include antibodies, kinase inhibitors, siRNAs and miRNAs. MicroRNAs (miRNAs) are short non-coding regulatory RNAs binding to the 3'-untranslated regions (3'-UTR) of the messenger RNAs (mRNAs) of target genes, regulating their translation and expression of proteins. Thus, miRNAs and their target genes constitute complicated interactive networks, which interact with other molecules during carcinogenesis. Due to their promising roles in carcinogenesis, miRNAs were shown to be the potential factors that mediated radiosensitivity and optimized outcomes of the combination of systemic therapy and radiotherapy.
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Affiliation(s)
- Cheng-Heng Wu
- Department of Biochemistry, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan;
| | - Cheng-Yi Chen
- Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan;
| | - Chau-Ting Yeh
- Liver Research Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan;
| | - Kwang-Huei Lin
- Department of Biochemistry, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan;
- Liver Research Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan;
- Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
- Correspondence: ; Tel./Fax: +886-3-2118263
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Murphy MR, Kleiman FE. Connections between 3' end processing and DNA damage response: Ten years later. WILEY INTERDISCIPLINARY REVIEWS. RNA 2020; 11:e1571. [PMID: 31657151 PMCID: PMC7295566 DOI: 10.1002/wrna.1571] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/10/2019] [Accepted: 09/17/2019] [Indexed: 12/23/2022]
Abstract
Ten years ago we reviewed how the cellular DNA damage response (DDR) is controlled by changes in the functional and structural properties of nuclear proteins, resulting in a timely coordinated control of gene expression that allows DNA repair. Expression of genes that play a role in DDR is regulated not only at transcriptional level during mRNA biosynthesis but also by changing steady-state levels due to turnover of the transcripts. The 3' end processing machinery, which is important in the regulation of mRNA stability, is involved in these gene-specific responses to DNA damage. Here, we review the latest mechanistic connections described between 3' end processing and DDR, with a special emphasis on alternative polyadenylation, microRNA and RNA binding proteins-mediated deadenylation, and discuss the implications of deregulation of these steps in DDR and human disease. This article is categorized under: RNA Processing > 3' End Processing RNA-Based Catalysis > Miscellaneous RNA-Catalyzed Reactions RNA in Disease and Development > RNA in Disease.
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Affiliation(s)
- Michael Robert Murphy
- Department of Chemistry, Hunter College and Biochemistry Program, The Graduate Center, City University of New York, New York, New York
| | - Frida Esther Kleiman
- Department of Chemistry, Hunter College and Biochemistry Program, The Graduate Center, City University of New York, New York, New York
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Majidinia M, Mir SM, Mirza-Aghazadeh-Attari M, Asghari R, Kafil HS, Safa A, Mahmoodpoor A, Yousefi B. MicroRNAs, DNA damage response and ageing. Biogerontology 2020; 21:275-291. [PMID: 32067137 DOI: 10.1007/s10522-020-09862-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 02/08/2020] [Indexed: 02/07/2023]
Abstract
Ageing is a multifactorial and integrated gradual deterioration affecting the most of biological process of cells. MiRNAs are differentially expressed in the cellular senescence and play important role in regulating of genes expression involved in features of ageing. The perception of miRNAs functions in ageing regulation can be useful in clarifying the mechanisms underlying ageing and designing of therapeutic strategies. The preservation of genomic integrity through DNA damage response (DDR) is related to the process of cellular senescence. The recent studies have shown that miRNAs has directly regulated the expression of numerous proteins in DDR pathways. In this review study, DDR pathways, miRNA biogenesis and functions, current finding on DDR regulations, molecular biology of ageing and the role of miRNAs in these processes have been studied. Finally, a brief explanation about the therapeutic function of miRNAs in ageing regarding its regulation of DDR has been provided.
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Affiliation(s)
- Maryam Majidinia
- Solid Tumor Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - Seyed Mostafa Mir
- Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Student Research Committee, Babol University of Medical Sciences, Babol, Iran
| | | | - Roghaieh Asghari
- Anesthesiology Research Team, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Samadi Kafil
- Stem Cell Center Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amin Safa
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam. .,Department of Immunology, Ophthalmology and ENT, School of Medicine, Complutense University, Madrid, Spain.
| | - Ata Mahmoodpoor
- Anesthesiology Research Team, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Bahman Yousefi
- Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran. .,Stem Cell Center Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. .,Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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25
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Guney Eskiler G, Cecener G, Egeli U, Tunca B. Talazoparib nanoparticles for overcoming multidrug resistance in triple-negative breast cancer. J Cell Physiol 2020; 235:6230-6245. [PMID: 32017076 DOI: 10.1002/jcp.29552] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 01/09/2020] [Indexed: 12/27/2022]
Abstract
Herein, we investigated efflux pumps-mediated talazoparib-resistance in the treatment of triple-negative breast cancer (TNBC). Furthermore, we produced a novel talazoparib-solid lipid nanoparticles (SLNs) and then explored in vitro therapeutic efficacy of talazoparib-SLNs to overcome talazoparib-resistance in TNBC cells. Talazoparib-SLNs formulation was produced and then characterized. Calcein and Rho-123 were used to analyze the functional activity of drug efflux pumps in these cells. Additionally, RT-PCR, western blot and immunofluorescence analysis were used to detect the messenger RNA, and protein expression level, and cellular localization of the multidrug resistance (MDR1), breast cancer resistance protein (BCRP), and MRP1. We found that talazoparib efflux was mediated by BCRP and MRP1 pumps in TNBC cells. Talazoparib-SLNs could significantly enhance therapeutic efficacy of talazoparib. Furthermore, talazoparib-SLNs were more effective in the suppression of MDR1, BCRP, and MRP1 gene and protein expression levels than talazoparib. Consequently, this study suggests that talazoparib-SLNs formulation represents a promising therapeutic carrier to reverse MDR-mediated resistance in TNBC.
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Affiliation(s)
- Gamze Guney Eskiler
- Department of Medical Biology, Faculty of Medicine, Sakarya University, Sakarya, Turkey
| | - Gulsah Cecener
- Department of Medical Biology, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - Unal Egeli
- Department of Medical Biology, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - Berrin Tunca
- Department of Medical Biology, Faculty of Medicine, Uludag University, Bursa, Turkey
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Yuan M, Zhao S, Chen R, Wang G, Bie Y, Wu Q, Cheng J. MicroRNA-138 inhibits tumor growth and enhances chemosensitivity in human cervical cancer by targeting H2AX. Exp Ther Med 2019; 19:630-638. [PMID: 31853324 PMCID: PMC6909785 DOI: 10.3892/etm.2019.8238] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 09/20/2019] [Indexed: 12/11/2022] Open
Abstract
MicroRNA-138 (miR-138) acts as a key regulator in the modulation of carcinogenesis in numerous tumor types. Chemoresistance is common and relevant to the failure of multiple treatment strategies for cervical cancer. However, the biological role of miR-138 in the progression and chemosensitivity of cervical cancer is still unclear. The present study aimed to investigate the expression, function and mechanism of miR-138 in cervical cancer. An miR-138 mimic, inhibitor and negative control were transfected into SiHa and C33A cells. The expression of miR-138 and its target were assessed by reverse transcription-PCR, western blotting and immunohistochemistry. The functional significance of miR-138 in tumor progression and chemosensitivity to cisplatin in vitro was examined by Cell Counting Kit-8, flow cytometry, wound healing and Transwell assays. A tumor xenograft model was used to validate the effects in vivo. These results demonstrated that miR-138 was significantly downregulated in cervical cancer cells. Overexpression of miR-138 suppressed cervical cancer cell proliferation, invasion, increased apoptosis and enhanced chemotherapy sensitivity in vivo and in vitro. Furthermore, bioinformatics analysis and dual luciferase reporter assays demonstrated that H2AX served as a target for miR-138, and the rescue experiment revealed that H2AX was a functional target of miR-138. The protective effects of miR-138 overexpression were dependent on H2AX. This study provides evidence that miR-138/H2AX may be a novel therapeutic target in cervical cancer.
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Affiliation(s)
- Min Yuan
- Department of Gynecology, Tumor Hospital Affiliated to Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China
| | - Shuting Zhao
- Department of Obstetrics and Gynecology, Shanghai East Hospital, Tongji University School of Medicine, Pudong New Area, Shanghai 200120, P.R. China
| | - Rui Chen
- Department of Obstetrics and Gynecology, Shanghai East Hospital, Tongji University School of Medicine, Pudong New Area, Shanghai 200120, P.R. China
| | - Guozeng Wang
- Department of Obstetrics and Gynecology, Shanghai East Hospital, Tongji University School of Medicine, Pudong New Area, Shanghai 200120, P.R. China
| | - Yachun Bie
- Department of Obstetrics and Gynecology, Shanghai East Hospital, Tongji University School of Medicine, Pudong New Area, Shanghai 200120, P.R. China
| | - Qianyu Wu
- Department of Obstetrics and Gynecology, Shanghai East Hospital, Tongji University School of Medicine, Pudong New Area, Shanghai 200120, P.R. China
| | - Jingxin Cheng
- Department of Obstetrics and Gynecology, Shanghai East Hospital, Tongji University School of Medicine, Pudong New Area, Shanghai 200120, P.R. China
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Intrinsic adriamycin resistance in p53-mutated breast cancer is related to the miR-30c/FANCF/REV1-mediated DNA damage response. Cell Death Dis 2019; 10:666. [PMID: 31511498 PMCID: PMC6739306 DOI: 10.1038/s41419-019-1871-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 07/15/2019] [Accepted: 07/15/2019] [Indexed: 12/19/2022]
Abstract
Adriamycin(ADR) is still considered to be one of the most effective agents in the treatment of breast cancer (BrCa), its efficacy is compromised by intrinsic resistance or acquire characteristics of multidrug resistance. At present, there are few genetic alterations that can be exploited as biomarkers to guide targeted use of ADR in clinical. Therefore, exploring the determinants of ADR sensitivity is pertinent for their optimal clinical application. TP53 is the most frequently mutated gene in human BrCa, p53 mutation has been reported to be closely related to ADR resistance, whereas the underlying mechanisms that cause endogenous ADR resistance in p53-mutant BrCa cells are not completely understood. The aim of the present study was to investigate the potential roles of miRNA in the response to ADR in p53-mutated breast cancer. Here, we report that BrCa cells expressing mutp53 are more resistant to ADR than cells with wild-type p53 (wtp53). The DNA repair protein- Fanconi anemia complementation group F protein (FANCF) and the translesion synthesis DNA polymerase REV1 protein is frequently abundant in the context of mutant p53 of BrCa. By targeting two key factors, miR-30c increases the sensitivity of BrCa cells to ADR. Furthermore, p53 directly activates the transcription of miR-30c by binding to its promoter. Subsequent analyses revealed that p53 regulates REV1 and FANCF by modulating miR-30c expression. Mutation of the p53 abolished this response. Consistently, reduced miR-30c expression is highly correlated with human BrCa with p53 mutational status and is associated with poor survival. We propose that one of the pathways affected by mutant p53 to increase intrinsic resistance to ADR involves miR-30c downregulation and the consequent upregulation of FANCF and REV1. The novel miRNA-mediated pathway that regulates chemoresistance in breast cancer will facilitate the development of novel therapeutic strategies.
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Zeng D, Xu H, Ji N, Li J, Zhou M, Dan H, Zhou Y, Zeng X, Jiang L, Chen Q. In situ measurement of miR-138 expression in oral squamous cell carcinoma tissue supports the role of this microRNA as a tumor suppressor. J Oral Pathol Med 2019; 48:911-918. [PMID: 31323152 DOI: 10.1111/jop.12933] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 06/17/2019] [Indexed: 02/05/2023]
Abstract
BACKGROUND Oral squamous cell carcinoma is the eighth most common cancer worldwide with a relatively high rate of metastasis (~40%). Previously, we showed that microRNA-138 serves as a functional tumor suppressor and plays an important role in oral squamous cell carcinoma metastasis. However, to date, microRNA-138 expression has not been examined in this tumor tissue. Herein, we demonstrated that microRNA-138 expression is downregulated in metastatic oral squamous cell carcinoma specimens using tissue microarray technology with in situ hybridization. METHODS The study included 254 oral squamous cell carcinoma patients from two centers (160 from the Chengdu center and 90 from the Guangzhou center) and four healthy volunteers. RESULTS Multivariate analysis showed that microRNA-138 expression was independent of tumor stage, age, gender, smoking, and alcohol consumption in oral squamous cell carcinoma patients. Interestingly, patients that expressed lower levels of microRNA-138 (determined by in situ hybridization) were more prone to regional lymph node metastasis and exhibited poorer outcomes. These findings support the role of microRNA-138 as a tumor suppressor in oral squamous cell carcinoma. CONCLUSION In summary, the expression level of microRNA-138 is negatively correlated with oral squamous cell carcinoma metastasis; the lower the expression of microRNA-138, the higher the rate of metastasis and the poorer the prognosis of the patients. Therefore, our study confirms that microRNA-138 serves as a tumor suppressor and plays a functional role in oral squamous cell carcinoma tumor metastasis; microRNA-138 constitutes a promising prognosis biomarker and therapeutic target for oral squamous cell carcinoma with metastasis potential.
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Affiliation(s)
- Dequan Zeng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Hao Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Ning Ji
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Jing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Min Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Hongxia Dan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Yu Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Xin Zeng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Lu Jiang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
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Qiu H, Chen F, Chen M. MicroRNA-138 negatively regulates the hypoxia-inducible factor 1α to suppress melanoma growth and metastasis. Biol Open 2019; 8:8/8/bio042937. [PMID: 31371307 PMCID: PMC6737980 DOI: 10.1242/bio.042937] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Melanoma with rapid progression towards metastasis has become the deadliest form of skin cancer. However, the mechanism of melanoma growth and metastasis is still unclear. Here, we found that miRNA-138 was lowly expressed and hypoxia-inducible factor 1α (HIF1α) was highly expressed in patients’ melanoma tissue compared with the paracancerous tissues, and they had a significant negative correlation (r=−0.877, P<0.001). Patients with miRNA-138low/HIF1αhigh signatures were predominant in late stage III/IV of melanoma. Further, bioinformatic analysis demonstrated that miRNA-138 directly targeted HIF1α. We found that the introduction of pre-miRNA-138 sequences to A375 cells reduced HIF1α mRNA expression and suppressed cell proliferation, migration and invasion. Overexpression of miRNA-138 or inhibition of HIF1α significantly suppressed the growth and metastasis of melanoma in vivo. Our study demonstrates the role and clinical relevance of miRNA-138 and HIF1α in melanoma cell growth and metastasis, providing a novel therapeutic target for suppression of melanoma growth and metastasis. Summary: Our study demonstrates the role and clinical relevance of miRNA-138 and HIF1α in melanoma cell growth and metastasis, providing a novel therapeutic target for suppression of melanoma growth and metastasis.
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Affiliation(s)
- Haijiang Qiu
- Department of Rheumatology & Immunology, the Guangzhou First People's Hospital, the Second Affiliated Hospital of South China University of Technology, Guangzhou 510641, China
| | - Fangchao Chen
- Department of Rheumatology & Immunology, the Guangzhou First People's Hospital, the Second Affiliated Hospital of South China University of Technology, Guangzhou 510641, China
| | - Minjun Chen
- Department of Rheumatology & Immunology, the Guangzhou First People's Hospital, the Second Affiliated Hospital of South China University of Technology, Guangzhou 510641, China
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Chen S, Liu R, Wang Q, Qi Z, Hu Y, Zhou P, Wang Z. MiR-34s negatively regulate homologous recombination through targeting RAD51. Arch Biochem Biophys 2019; 666:73-82. [PMID: 30951682 DOI: 10.1016/j.abb.2019.03.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 03/15/2019] [Accepted: 03/27/2019] [Indexed: 01/07/2023]
Abstract
Double-strand breaks (DSBs), the most serious lesions of DNA, often induce chromosomal aberrations and are intimately associated with oncogenesis. A normal DNA damage response (DDR) network contains two major repair pathways: homologous recombination (HR) and non-homologous end-joining (NHEJ). Studies of DSB repair-associated molecules have focused mainly on DNA repair proteins. However, non-coding RNAs also play important roles in the process of DSB repair. Over the past two decades, microRNAs (miRNAs) have been extensively investigated. Our previous work showed that miR-34c-5p overexpression results in suppression of RAD51 and upregulation of γH2AX. In accordance with this, we confirmed that miR-34s family overexpression increased endogenous DSB levels to different extents, an effect that was further confirmed to be associated with the decreased efficiency of HR repair. In addition, miR-34s overexpression also induced G1 arrest, inhibited proliferation and promoted apoptosis. As a central molecule in the process of HR pathway, RAD51 expression was strongly repressed in cells transfected with the miR-34a/b/c-5p mimic. Finally, we demonstrated that miR-34a/b/c-5p directly targets the RAD51 mRNA 3'-UTR or indirectly inhibits RAD51 expression via the p53 signaling pathway. Taken together, our results indicate that miR-34s overexpression depresses the efficiency of HR repair and induces DSBs by downregulating RAD51 expression. Our findings highlight a novel mechanism of HR pathway regulation via the miR-34s/p53/RAD51 axis.
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Affiliation(s)
- Shuangjing Chen
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, PR China
| | - Ruixue Liu
- Department of Radiation Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Qi Wang
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, PR China
| | - Zhenhua Qi
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, PR China
| | - Yingchun Hu
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, PR China
| | - Pingkun Zhou
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, PR China.
| | - Zhidong Wang
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, PR China.
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Khanal S, Galloway DA. High-risk human papillomavirus oncogenes disrupt the Fanconi anemia DNA repair pathway by impairing localization and de-ubiquitination of FancD2. PLoS Pathog 2019; 15:e1007442. [PMID: 30818369 PMCID: PMC6413947 DOI: 10.1371/journal.ppat.1007442] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 03/12/2019] [Accepted: 02/04/2019] [Indexed: 12/31/2022] Open
Abstract
Persistent expression of high-risk HPV oncogenes is necessary for the development of anogenital and oropharyngeal cancers. Here, we show that E6/E7 expressing cells are hypersensitive to DNA crosslinking agent cisplatin and have defects in repairing DNA interstrand crosslinks (ICL). Importantly, we elucidate how E6/E7 attenuate the Fanconi anemia (FA) DNA crosslink repair pathway. Though E6/E7 activated the pathway by increasing FancD2 monoubiquitination and foci formation, they inhibited the completion of the repair by multiple mechanisms. E6/E7 impaired FancD2 colocalization with double-strand breaks (DSB), which subsequently hindered the recruitment of the downstream protein Rad51 to DSB in E6 cells. Further, E6 expression caused delayed FancD2 de-ubiquitination, an important process for effective ICL repair. Delayed FancD2 de-ubiquitination was associated with the increased chromatin retention of FancD2 hindering USP1 de-ubiquitinating activity, and persistently activated ATR/CHK-1/pS565 FancI signaling. E6 mediated p53 degradation did not hamper the cell cycle specific process of FancD2 modifications but abrogated repair by disrupting FancD2 de-ubiquitination. Further, E6 reduced the expression and foci formation of Palb2, which is a repair protein downstream of FancD2. These findings uncover unique mechanisms by which HPV oncogenes contribute to genomic instability and the response to cisplatin therapies.
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Affiliation(s)
- Sujita Khanal
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Denise A. Galloway
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
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Jimeno S, Mejías-Navarro F, Prados-Carvajal R, Huertas P. Controlling the balance between chromosome break repair pathways. DNA Repair (Amst) 2019; 115:95-134. [DOI: 10.1016/bs.apcsb.2018.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Wang L, Xu X, Yang J, Chen L, Liu B, Liu T, Jin Q. Integrated microRNA and mRNA analysis in the pathogenic filamentous fungus Trichophyton rubrum. BMC Genomics 2018; 19:933. [PMID: 30547762 PMCID: PMC6295003 DOI: 10.1186/s12864-018-5316-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 11/27/2018] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Trichophyton rubrum (T. rubrum) is an important model organism of dermatophytes, which are the most common fungal pathogens worldwide. Despite the severity and prevalence of the infection caused by these pathogens, current therapies are not sufficient. MicroRNA (miRNA) is a class of small noncoding RNAs that are key factors in the regulation of gene expression. These miRNAs are reported to be highly conserved in different organisms and are involved in various essential cellular processes. In this study, we performed an integrated analysis of microRNA-like RNAs (milRNAs) and mRNAs between conidial and mycelial stages to investigate the roles of milRNAs in regulating the expression of target genes in T. rubrum. RESULTS A total of 158 conserved milRNAs and 12 novel milRNAs were identified in our study, corresponding to 5470 target genes, which were involved in various essential biological pathways. In addition, 137 target genes corresponding to 21 milRNAs were concurrent differentially expressed between the conidial and mycelial stages. Among these 137 target genes, 64 genes showed the opposite trend to their corresponding milRNAs in expression difference between the two stages, indicating possible negative regulation. Furthermore, 46% of differentially expressed target genes are involved in transcription, transcriptional and post-transcriptional regulation. Our results indicate that milRNAs might associate with other regulatory elements to control gene expression at both transcriptional and post-transcriptional level. CONCLUSIONS This study provides the first analysis of milRNA expression profile in T. rubrum as well as dermatophytes in general. The results revealed the roles of milRNAs in regulating gene expression between the two major growth stages of this fungus. Our study deepens our understanding of T. rubrum and will serve as a foundation for further investigations to combat this fungus.
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Affiliation(s)
- Lingling Wang
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xingye Xu
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jian Yang
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Lihong Chen
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Bo Liu
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Tao Liu
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
| | - Qi Jin
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
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Thapar R. Regulation of DNA Double-Strand Break Repair by Non-Coding RNAs. Molecules 2018; 23:molecules23112789. [PMID: 30373256 PMCID: PMC6278438 DOI: 10.3390/molecules23112789] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 10/25/2018] [Accepted: 10/26/2018] [Indexed: 01/12/2023] Open
Abstract
DNA double-strand breaks (DSBs) are deleterious lesions that are generated in response to ionizing radiation or replication fork collapse that can lead to genomic instability and cancer. Eukaryotes have evolved two major pathways, namely homologous recombination (HR) and non-homologous end joining (NHEJ) to repair DSBs. Whereas the roles of protein-DNA interactions in HR and NHEJ have been fairly well defined, the functions of small and long non-coding RNAs and RNA-DNA hybrids in the DNA damage response is just beginning to be elucidated. This review summarizes recent discoveries on the identification of non-coding RNAs and RNA-mediated regulation of DSB repair.
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Affiliation(s)
- Roopa Thapar
- Department of Molecular and Cellular Oncology, University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA.
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35
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Wang Y, Chen SY, Colborne S, Lambert G, Shin CY, Santos ND, Orlando KA, Lang JD, Hendricks WPD, Bally MB, Karnezis AN, Hass R, Underhill TM, Morin GB, Trent JM, Weissman BE, Huntsman DG. Histone Deacetylase Inhibitors Synergize with Catalytic Inhibitors of EZH2 to Exhibit Antitumor Activity in Small Cell Carcinoma of the Ovary, Hypercalcemic Type. Mol Cancer Ther 2018; 17:2767-2779. [PMID: 30232145 DOI: 10.1158/1535-7163.mct-18-0348] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 08/13/2018] [Accepted: 09/12/2018] [Indexed: 11/16/2022]
Abstract
Small cell carcinoma of the ovary, hypercalcemic type (SCCOHT) is a rare but extremely lethal malignancy that mainly impacts young women. SCCOHT is characterized by a diploid genome with loss of SMARCA4 and lack of SMARCA2 expression, two mutually exclusive ATPases of the SWI/SNF chromatin-remodeling complex. We and others have identified the histone methyltransferase EZH2 as a promising therapeutic target for SCCOHT, suggesting that SCCOHT cells depend on the alternation of epigenetic pathways for survival. In this study, we found that SCCOHT cells were more sensitive to pan-HDAC inhibitors compared with other ovarian cancer lines or immortalized cell lines tested. Pan-HDAC inhibitors, such as quisinostat, reversed the expression of a group of proteins that were deregulated in SCCOHT cells due to SMARCA4 loss, leading to growth arrest, apoptosis, and differentiation in vitro and suppressed tumor growth of xenografted tumors of SCCOHT cells. Moreover, combined treatment of HDAC inhibitors and EZH2 inhibitors at sublethal doses synergistically induced histone H3K27 acetylation and target gene expression, leading to rapid induction of apoptosis and growth suppression of SCCOHT cells and xenografted tumors. Therefore, our preclinical study highlighted the therapeutic potential of combined treatment of HDAC inhibitors with EZH2 catalytic inhibitors to treat SCCOHT.
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Affiliation(s)
- Yemin Wang
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada. .,Department of Molecular Oncology, British Columbia Cancer Research Centre, Vancouver, BC, Canada
| | - Shary Yuting Chen
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada.,Department of Molecular Oncology, British Columbia Cancer Research Centre, Vancouver, BC, Canada
| | - Shane Colborne
- Michael Smith Genome Science Centre, British Columbia Cancer Agency, Vancouver, BC, Canada
| | - Galen Lambert
- Department of Molecular Oncology, British Columbia Cancer Research Centre, Vancouver, BC, Canada
| | - Chae Young Shin
- Department of Molecular Oncology, British Columbia Cancer Research Centre, Vancouver, BC, Canada
| | - Nancy Dos Santos
- Department of Experimental Therapeutics, British Columbia Cancer Research Centre, Vancouver, BC, Canada
| | - Krystal A Orlando
- Department of Pathology and Laboratory Medicine and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina
| | - Jessica D Lang
- Division of Integrated Cancer Genomics, Translational Genomics Research Institute (TGen), Phoenix, Arizona
| | - William P D Hendricks
- Division of Integrated Cancer Genomics, Translational Genomics Research Institute (TGen), Phoenix, Arizona
| | - Marcel B Bally
- Department of Experimental Therapeutics, British Columbia Cancer Research Centre, Vancouver, BC, Canada
| | - Anthony N Karnezis
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada.,Department of Molecular Oncology, British Columbia Cancer Research Centre, Vancouver, BC, Canada
| | - Ralf Hass
- Department of Obstetrics and Gynecology, Hannover Medical School, D-30625 Hannover, Germany
| | - T Michael Underhill
- Department of Cellular and Physiological Sciences and Biomedical Research Centre, University of British Columbia, Vancouver, BC, Canada
| | - Gregg B Morin
- Michael Smith Genome Science Centre, British Columbia Cancer Agency, Vancouver, BC, Canada.,Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | - Jeffrey M Trent
- Division of Integrated Cancer Genomics, Translational Genomics Research Institute (TGen), Phoenix, Arizona
| | - Bernard E Weissman
- Department of Pathology and Laboratory Medicine and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina
| | - David G Huntsman
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada. .,Department of Molecular Oncology, British Columbia Cancer Research Centre, Vancouver, BC, Canada.,Department of Obstetrics and Gynaecology, University of British Columbia, Vancouver, BC, Canada
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36
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Wang D, Ling L, Zhang W, Bai Y, Shu Y, Guo C. Uncovering key small RNAs associated with gametocidal action in wheat. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:4739-4756. [PMID: 29757397 DOI: 10.1093/jxb/ery175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 05/09/2018] [Indexed: 06/08/2023]
Abstract
Gametocidal (Gc) chromosomes can kill gametes that lack them by causing chromosomal breakage to ensure their preferential transmission, and they have been exploited in genetic breeding. The present study investigated the possible roles of small RNAs (sRNAs) in Gc action. By sequencing two small RNA libraries from the anthers of Triticum aestivum cv. Chinese Spring (CS) and the Chinese Spring-Gc 3C chromosome monosomic addition line (CS-3C), we identified 239 conserved and 72 putative novel miRNAs, including 135 differentially expressed miRNAs. These miRNAs were predicted to target multiple genes with various molecular functions relevant to the features of Gc action, including sterility and genome instability. The transgenic overexpression of miRNA, which was up-regulated in CS-3C, reduced rice fertility. The CS-3C line exhibited a genome-wide reduction in 24 nt siRNAs compared with that of the CS line, particularly in transposable element (TE) and repetitive DNA sequences. Corresponding to this reduction, the bisulfite sequencing analysis of four retro-TE sequences showed a decrease in CHH methylation, typical of RNA-directed DNA methylation (RdDM). These results demonstrate that both miRNA-directed regulation of gene expression and siRNA-directed DNA methylation of target TE loci could play a role in Gc action.
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Affiliation(s)
- Dan Wang
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, China
| | - Lei Ling
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, China
| | - Wenrui Zhang
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, China
| | - Yan Bai
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, China
| | - Yongjun Shu
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, China
| | - Changhong Guo
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, China
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Cheung RS, Castella M, Abeyta A, Gafken PR, Tucker N, Taniguchi T. Ubiquitination-Linked Phosphorylation of the FANCI S/TQ Cluster Contributes to Activation of the Fanconi Anemia I/D2 Complex. Cell Rep 2018. [PMID: 28636932 DOI: 10.1016/j.celrep.2017.05.081] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Repair of interstrand crosslinks by the Fanconi anemia (FA) pathway requires both monoubiquitination and de-ubiquitination of the FANCI/FANCD2 (FANCI/D2) complex. In the standing model, the phosphorylation of six sites in the FANCI S/TQ cluster domain occurs upstream of, and promotes, FANCI/D2 monoubiquitination. We generated phospho-specific antibodies against three different S/TQ cluster sites (serines 556, 559, and 565) on human FANCI and found that, in contrast to the standing model, distinct FANCI sites were phosphorylated either predominantly upstream (ubiquitination independent; serine 556) or downstream (ubiquitination-linked; serines 559 and 565) of FANCI/D2 monoubiquitination. Ubiquitination-linked FANCI phosphorylation inhibited FANCD2 de-ubiquitination and bypassed the need to de-ubiquitinate FANCD2 to achieve effective interstrand crosslink repair. USP1 depletion suppressed ubiquitination-linked FANCI phosphorylation despite increasing FANCI/D2 monoubiquitination, providing an explanation of why FANCD2 de-ubiquitination is important for function of the FA pathway. Our work results in a refined model of how FANCI phosphorylation activates the FANCI/D2 complex.
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Affiliation(s)
- Ronald S Cheung
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; Division of Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Maria Castella
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Antonio Abeyta
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Philip R Gafken
- Proteomics Core Facility, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Nyka Tucker
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Toshiyasu Taniguchi
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; Department of Molecular Life Science, Tokai University School of Medicine, Isehara, Kanagawa 259-1193, Japan.
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38
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Arjumand W, Asiaf A, Ahmad ST. Noncoding RNAs in DNA Damage Response: Opportunities for Cancer Therapeutics. Methods Mol Biol 2018; 1699:3-21. [PMID: 29086365 DOI: 10.1007/978-1-4939-7435-1_1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
DNA repair machinery preserves genomic integrity, which is frequently challenged through endogenous and exogenous toxic insults, and any sort of repair machinery malfunctioning ultimately manifests in the form of several types of terrible human diseases such as cancers (Hoeijmakers, Nature 411(6835): 366-374, 2001). Noncoding RNAs (ncRNAs) are crucial players of DNA repair machinery in a cell and play a vital role in maintaining genomic stability, which is essential for its survival and normal functioning thus preventing tumorigenesis. To preserve the integrity of the genome, cells initiate a specific cellular response, recognized as DNA damage response (DDR), which includes several distinct DNA repair pathways. These repair pathways permit normal cells to repair DNA damage or induce apoptosis and cell cycle arrest in case the damage is irreparable. Disruption of these pathways in cancer leads to an increase in genomic instability and mutagenesis. Recently, emerging evidence suggests that ncRNAs play a critical role in the regulation of DDR. There is an extensive crosstalk between ncRNAs and the canonical DDR signaling pathway. DDR-induced expression of ncRNAs can provide a regulatory mechanism to accurately control the expression of DNA damage responsive genes in a spatio-temporal manner. DNA damage alters expression of a variety of ncRNAs at multiple levels including transcriptional regulation, post-transcriptional regulation, and RNA degradation and vice versa, wherein ncRNAs can directly regulate cellular processes involved in DDR by altering expression of their targeting genes, with a particular emphasis on microRNAs (miRNAs) and long noncoding RNAs (lncRNAs). Relationship between the defects in the DDR and deregulation of related ncRNAs in human cancers is one of the established, which is growing stronger with the advent of high-throughput sequencing techniques such as next-generation sequencing. Understanding of the mechanisms that explain the association between ncRNAs and DDR/DNA repair pathways will definitely increase our understanding on human tumor biology and on different responses to diverse drugs. Different ncRNAs interact with distinct DDR components and are promising targets for improving the effects to overcome the resistance to conventional chemotherapeutic agents. In this chapter, we will focus the role of ncRNAs in the DNA damage, repair, and cancer.
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Affiliation(s)
- Wani Arjumand
- Robson DNA Science Centre, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, 2A32 HRIC, University of Calgary, 3330 Hospital Drive NW, Calgary, AB, T2N4N1, Canada
| | - Asia Asiaf
- Department of Biochemistry, Faculty of Science, University of Kashmir, Hazratbal Srinagar, J&K, 190006, India
| | - Shiekh Tanveer Ahmad
- Clarke H. Smith Brain Tumour Centre, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, 2A25 HRIC, University of Calgary, 3330 Hospital Drive, NW, Calgary, AB, T2N4N1, Canada.
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39
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Calses PC, Dhillon KK, Tucker N, Chi Y, Huang JW, Kawasumi M, Nghiem P, Wang Y, Clurman BE, Jacquemont C, Gafken PR, Sugasawa K, Saijo M, Taniguchi T. DGCR8 Mediates Repair of UV-Induced DNA Damage Independently of RNA Processing. Cell Rep 2017; 19:162-174. [PMID: 28380355 DOI: 10.1016/j.celrep.2017.03.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 12/24/2016] [Accepted: 03/03/2017] [Indexed: 12/20/2022] Open
Abstract
Ultraviolet (UV) radiation is a carcinogen that generates DNA lesions. Here, we demonstrate an unexpected role for DGCR8, an RNA binding protein that canonically functions with Drosha to mediate microRNA processing, in the repair of UV-induced DNA lesions. Treatment with UV induced phosphorylation on serine 153 (S153) of DGCR8 in both human and murine cells. S153 phosphorylation was critical for cellular resistance to UV, the removal of UV-induced DNA lesions, and the recovery of RNA synthesis after UV exposure but not for microRNA expression. The RNA-binding and Drosha-binding activities of DGCR8 were not critical for UV resistance. DGCR8 depletion was epistatic to defects in XPA, CSA, and CSB for UV sensitivity. DGCR8 physically interacted with CSB and RNA polymerase II. JNKs were involved in the UV-induced S153 phosphorylation. These findings suggest that UV-induced S153 phosphorylation mediates transcription-coupled nucleotide excision repair of UV-induced DNA lesions in a manner independent of microRNA processing.
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Affiliation(s)
- Philamer C Calses
- Division of Human Biology, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA; Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA; Molecular and Cellular Biology Graduate Program, University of Washington, 1959 NE Pacific, HSB T-466, Seattle, WA 98195-7275, USA
| | - Kiranjit K Dhillon
- Division of Human Biology, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA; Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA
| | - Nyka Tucker
- Division of Human Biology, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA; Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA
| | - Yong Chi
- Division of Human Biology, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA; Division of Clinical Research, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA
| | - Jen-Wei Huang
- Division of Human Biology, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA; Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA; Molecular and Cellular Biology Graduate Program, University of Washington, 1959 NE Pacific, HSB T-466, Seattle, WA 98195-7275, USA
| | - Masaoki Kawasumi
- Division of Dermatology, Department of Medicine, University of Washington, 850 Republican St., Seattle, WA 98109-4714, USA
| | - Paul Nghiem
- Division of Dermatology, Department of Medicine, University of Washington, 850 Republican St., Seattle, WA 98109-4714, USA
| | - Yemin Wang
- Division of Human Biology, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA; Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA
| | - Bruce E Clurman
- Division of Human Biology, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA; Division of Clinical Research, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA
| | - Celine Jacquemont
- Division of Human Biology, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA; Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA
| | - Philip R Gafken
- Proteomics Core Facility, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., DE-352, Seattle, WA 98109-1024, USA
| | - Kaoru Sugasawa
- Biosignal Research Center, Organization of Advanced Science and Technology, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Masafumi Saijo
- Graduate School of Frontier Biosciences, Osaka University, Yamadaoka 1-3, Suita, Osaka 565-0871, Japan
| | - Toshiyasu Taniguchi
- Division of Human Biology, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA; Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., C1-015, Seattle, WA 98109-1024, USA; Department of Molecular Life Science, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan.
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Yang Z, Wa QD, Lu C, Pan W, Lu ZΜ, Ao J. miR‑328‑3p enhances the radiosensitivity of osteosarcoma and regulates apoptosis and cell viability via H2AX. Oncol Rep 2017; 39:545-553. [PMID: 29207178 PMCID: PMC5783622 DOI: 10.3892/or.2017.6112] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Accepted: 09/26/2017] [Indexed: 11/11/2022] Open
Abstract
Osteosarcoma is a kind of high-risk sarcoma of the skeleton typically observed in people under 25 years old. Currently, radiotherapy is widely applied in cancer treatment. However, osteosarcoma is radioresistant and accordingly new, more effective radiosensitizers are needed. miRNAs have been reported to play an important role in osteosarcoma radiosensitivity. We examined the modulating effect of miR-328-3p in vivo and in vitro. miR-328-3p was downregulated in HOS-2R cells. The overexpression of miR-328-3p enhanced the radiosensitivity of osteosarcoma cells. miR-328-3p inhibited proliferation and promoted apoptosis in osteosarcoma cells under radiation conditions. In cells overexpressing miR-328-3p, H2AX expression was downregulated. We found that miR-328-3p targets H2AX and inhibits its expression. It was concluded, that miR-328-3p enhances the radiosensitization of osteosarcoma following X-ray irradiation, and determined that it directly targets H2AX to regulate radiosensitization.
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Affiliation(s)
- Zhen Yang
- Guizhou Provincial People's Hospital, Guiyang, Guizhou, P.R. China
| | - Qing-De Wa
- Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou, P.R. China
| | - Chao Lu
- Guizhou Provincial People's Hospital, Guiyang, Guizhou, P.R. China
| | - Wei Pan
- Guizhou Provincial People's Hospital, Guiyang, Guizhou, P.R. China
| | - Zi-Μo Lu
- Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou, P.R. China
| | - Jun Ao
- Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou, P.R. China
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41
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So EY, Winchester T, Ouchi T. The screening of a microRNA expression during development of human macrophages and mouse dendritic cells. Cancer Biol Ther 2017; 18:152-157. [PMID: 28296555 DOI: 10.1080/15384047.2017.1281498] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
There is increasing evidence showing specific roles of microRNA in cell differentiation and cancer progression. Here we examine miRNA profiles during maturation of monocytes and bone marrow-derived dendritic cells (BMDCs) in human and mouse, respectively. We have identified significant changes of various miRNA expression during monocyte and BMDC monocyte development via miRNA microarrays, confirmed by quantitative PCR. Increases in miR155 expression positively correlated with increasing maturity of monocyte and BMDC in both mouse and human microarrays, indicating its importance in development. We describe a requirement of miR155 for MHCII expression during GM-CSF-induced development and LPS-induced maturation of DCs, suggesting reduced immune function of DC when miR155 is absent. Our study suggests that miRNAs might have an important role in differentiation of myeloid cell such as dendritic cells and macrophages.
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Affiliation(s)
- Eui Young So
- a Deparment of Cancer Genetics , Roswell Park Cancer Institute , Buffalo , NY , USA
| | - Trisha Winchester
- a Deparment of Cancer Genetics , Roswell Park Cancer Institute , Buffalo , NY , USA
| | - Toru Ouchi
- a Deparment of Cancer Genetics , Roswell Park Cancer Institute , Buffalo , NY , USA
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He J, Feng X, Hua J, Wei L, Lu Z, Wei W, Cai H, Wang B, Shi W, Ding N, Li H, Zhang Y, Wang J. miR-300 regulates cellular radiosensitivity through targeting p53 and apaf1 in human lung cancer cells. Cell Cycle 2017; 16:1943-1953. [PMID: 28895780 DOI: 10.1080/15384101.2017.1367070] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
microRNAs (miRNAs) play a crucial role in mediation of the cellular sensitivity to ionizing radiation (IR). Previous studies revealed that miR-300 was involved in the cellular response to IR or chemotherapy drug. However, whether miR-300 could regulate the DNA damage responses induced by extrinsic genotoxic stress in human lung cancer and the underlying mechanism remain unknown. In this study, the expression of miR-300 was examined in lung cancer cells treated with IR, and the effects of miR-300 on DNA damage repair, cell cycle arrest, apoptosis and senescence induced by IR were investigated. It was found that IR induced upregulation of endogenous miR-300, and ectopic expression of miR-300 by transfected with miR-300 mimics not only greatly enhanced the cellular DNA damage repair ability but also substantially abrogated the G2 cell cycle arrest and apoptosis induced by IR. Bioinformatic analysis predicted that p53 and apaf1 were potential targets of miR-300, and the luciferase reporter assay showed that miR-300 significantly suppressed the luciferase activity through binding to the 3'-UTR of p53 or apaf1 mRNA. In addition, overexpression of miR-300 significantly reduced p53/apaf1 and/or IR-induced p53/apaf1 protein expression levels. Flow cytomertry analysis and colony formation assay showed that miR-300 desensitized lung cancer cells to IR by suppressing p53-dependent G2 cell cycle arrest, apoptosis and senescence. These data demonstrate that miR-300 regulates the cellular sensitivity to IR through targeting p53 and apaf1 in lung cancer cells.
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Affiliation(s)
- Jinpeng He
- a Key Laboratory of Space Radiobiology of Gansu Province & Key Laboratory of Heavy Ion Radiation Biology and Medicine, Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou , China
| | - Xiu Feng
- a Key Laboratory of Space Radiobiology of Gansu Province & Key Laboratory of Heavy Ion Radiation Biology and Medicine, Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou , China.,b School of Pharmacy , Lanzhou University , Lanzhou , China
| | - Junrui Hua
- a Key Laboratory of Space Radiobiology of Gansu Province & Key Laboratory of Heavy Ion Radiation Biology and Medicine, Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou , China
| | - Li Wei
- c Clinical Lab & General Surgery Department , Gansu Provincial Hospital , Lanzhou , China
| | - Zhiwei Lu
- d Major Disease Prevention and Control of Molecular Medicine and Traditional Chinese Medicine Research in Gansu Provincial Key Laboratory , Gansu University of Chinese Medicine , Lanzhou , China
| | - Wenjun Wei
- a Key Laboratory of Space Radiobiology of Gansu Province & Key Laboratory of Heavy Ion Radiation Biology and Medicine, Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou , China.,e University of Chinese Academy of Sciences , Beijing , China
| | - Hui Cai
- c Clinical Lab & General Surgery Department , Gansu Provincial Hospital , Lanzhou , China
| | - Bing Wang
- a Key Laboratory of Space Radiobiology of Gansu Province & Key Laboratory of Heavy Ion Radiation Biology and Medicine, Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou , China.,e University of Chinese Academy of Sciences , Beijing , China
| | - Wengui Shi
- a Key Laboratory of Space Radiobiology of Gansu Province & Key Laboratory of Heavy Ion Radiation Biology and Medicine, Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou , China.,e University of Chinese Academy of Sciences , Beijing , China
| | - Nan Ding
- a Key Laboratory of Space Radiobiology of Gansu Province & Key Laboratory of Heavy Ion Radiation Biology and Medicine, Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou , China
| | - He Li
- a Key Laboratory of Space Radiobiology of Gansu Province & Key Laboratory of Heavy Ion Radiation Biology and Medicine, Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou , China.,e University of Chinese Academy of Sciences , Beijing , China
| | - Yanan Zhang
- a Key Laboratory of Space Radiobiology of Gansu Province & Key Laboratory of Heavy Ion Radiation Biology and Medicine, Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou , China
| | - Jufang Wang
- a Key Laboratory of Space Radiobiology of Gansu Province & Key Laboratory of Heavy Ion Radiation Biology and Medicine, Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou , China
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43
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Ni J, Bucci J, Chang L, Malouf D, Graham P, Li Y. Targeting MicroRNAs in Prostate Cancer Radiotherapy. Theranostics 2017; 7:3243-3259. [PMID: 28900507 PMCID: PMC5595129 DOI: 10.7150/thno.19934] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Accepted: 05/10/2017] [Indexed: 02/06/2023] Open
Abstract
Radiotherapy is one of the most important treatment options for localized early-stage or advanced-stage prostate cancer (CaP). Radioresistance (relapse after radiotherapy) is a major challenge for the current radiotherapy. There is great interest in investigating mechanisms of radioresistance and developing novel treatment strategies to overcome radioresistance. MicroRNAs (miRNAs) are small, non-coding RNAs that regulate gene expression at the post-transcriptional level, participating in numerous physiological and pathological processes including cancer invasion, progression, metastasis and therapeutic resistance. Emerging evidence indicates that miRNAs play a critical role in the modulation of key cellular pathways that mediate response to radiation, influencing the radiosensitivity of the cancer cells through interplaying with other biological processes such as cell cycle checkpoints, apoptosis, autophagy, epithelial-mesenchymal transition and cancer stem cells. Here, we summarize several important miRNAs in CaP radiation response and then discuss the regulation of the major signalling pathways and biological processes by miRNAs in CaP radiotherapy. Finally, we emphasize on microRNAs as potential predictive biomarkers and/or therapeutic targets to improve CaP radiosensitivity.
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Yuan Z, Mo H, Mo L, He J, Wu Z, Lin X. Suppressive effect of microRNA-138 on the proliferation and invasion of osteosarcoma cells via targeting SIRT1. Exp Ther Med 2017; 13:3417-3423. [PMID: 28587420 PMCID: PMC5450556 DOI: 10.3892/etm.2017.4426] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 02/07/2017] [Indexed: 12/12/2022] Open
Abstract
MicroRNAs (miRs), a class of small non-coding RNAs, function as key regulators in gene expression through binding to the 3'-untranslated region (UTR) of their target mRNA, which further leads to translational repression or mRNA degradation. Recently, miR-138 has been found to have a tumor suppressive role in a variety of human malignancies. However, the exact role of miR-138 in regulating the malignant phenotypes of osteosarcoma (OS) has remained to be elucidated. In the present study, reverse-transcription PCR analysis showed that the expression of miR-138 was markedly reduced in OS tissues compared to that in matched adjacent non-tumorous tissues. Furthermore, it was also downregulated in several common OS cell lines, when compared with that in a normal human osteoblast cell line. Overexpression of miR-138 suppressed cell proliferation and invasion and led to a significant decrease in the protein expression of sirtuin 1 (SIRT1), which was further identified as a direct target gene of miR-138 in MG63 cells. Moreover, restoration of SIRT1 expression reversed the suppressive effects of miR-138 on MG63 cell proliferation and invasion. Finally, the expression of SIRT1 was found to be significantly upregulated in OS tissues compared to that in matched adjacent tissues, and SIRT1 levels were inversely correlated with the miR-138 levels in OS tissues. Therefore, the present study demonstrated that miR-138 has a role in inhibiting OS cell proliferation and invasion via directly targeting SIRT1, and suggested that the miR-138/SIRT1 axis may become a promising therapeutic target for OS.
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Affiliation(s)
- Zhenchao Yuan
- Department of Bone and Soft Tissue Neurosurgery, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Hao Mo
- Department of Bone and Soft Tissue Neurosurgery, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China,Correspondence to: Dr Hao Mo, Department of Bone and Soft Tissue Neurosurgery, Affiliated Tumor Hospital of Guangxi Medical University, 71 He Di Road, Nanning, Guangxi 530021, P.R. China, E-mail:
| | - Ligen Mo
- Department of Bone and Soft Tissue Neurosurgery, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Juliang He
- Department of Bone and Soft Tissue Neurosurgery, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Zhenjie Wu
- Department of Bone and Soft Tissue Neurosurgery, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Xiang Lin
- Department of Bone and Soft Tissue Neurosurgery, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
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Sha HH, Wang DD, Chen D, Liu SW, Wang Z, Yan DL, Dong SC, Feng JF. MiR-138: A promising therapeutic target for cancer. Tumour Biol 2017; 39:1010428317697575. [PMID: 28378633 DOI: 10.1177/1010428317697575] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
MicroRNAs are small noncoding RNAs which regulate gene expressions at post-transcriptional level by binding to the 3'-untranslated region of target messenger RNAs. Growing evidences highlight their pivotal roles in various biological processes of human cancers. Among them, miR-138, generating from two primary transcripts, pri-miR-138-1 and pri-miR-138-2, expresses aberrantly in different cancers and is extensively studied in cancer network. Importantly, studies have shown that miR-138 acts as a tumor suppressor by targeting many target genes, which are related to proliferation, apoptosis, invasion, and migration. Additionally, some researches also discover that miR-138 can sensitize tumors to chemotherapies. In this review, we summarize the expression of miR-138 on regulatory mechanisms and tumor biological processes, which will establish molecular basis on the usage of miR-138 in clinical applications in the future.
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Affiliation(s)
- Huan-Huan Sha
- 1 Department of Chemotherapy, Jiangsu Cancer Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Dan-Dan Wang
- 2 The First Clinical School of Nanjing Medical University, Nanjing, China
| | - Dan Chen
- 3 Research Center of Clinical Oncology, Jiangsu Cancer Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Si-Wen Liu
- 1 Department of Chemotherapy, Jiangsu Cancer Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Zhen Wang
- 2 The First Clinical School of Nanjing Medical University, Nanjing, China
| | - Da-Li Yan
- 1 Department of Chemotherapy, Jiangsu Cancer Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Shu-Chen Dong
- 1 Department of Chemotherapy, Jiangsu Cancer Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Ji-Feng Feng
- 1 Department of Chemotherapy, Jiangsu Cancer Hospital Affiliated to Nanjing Medical University, Nanjing, China
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Xiao M, Cai J, Cai L, Jia J, Xie L, Zhu Y, Huang B, Jin D, Wang Z. Let-7e sensitizes epithelial ovarian cancer to cisplatin through repressing DNA double strand break repair. J Ovarian Res 2017; 10:24. [PMID: 28376831 PMCID: PMC5379542 DOI: 10.1186/s13048-017-0321-8] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 03/28/2017] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Resistance to platinum-based chemotherapy remains a great challenge for ovarian cancer treatment. The human let-7 family contains 13 members located on nine different chromosomes, and most members have been implicated in the modulation of drug sensitivity in cancers. Our previous study showed that deregulation of let-7e in epithelial ovarian cancer (EOC) promoted the development of resistance to cisplatin. In the present study, we aimed to investigate the underlying mechanism and further evaluate the clinical value of let-7e in predicting chemo-response and prognosis in EOC. RESULTS In situ hybridization assays revealed a significantly decreased expression of let-7e in chemo-resistant EOC tissues compared with chemo-sensitive cases. Transfection with let-7e agomir sensitized EOC cells to cisplatin, down-regulated BRCA1 and Rad51 expression, and repressed the repair of cisplatin-induced DNA double strand break, while let-7e inhibitor exerted the opposite effects. In human EOC tissues, BRCA1 and Rad51 levels were increased in the chemo-resistant group compared with the sensitive group and were negatively correlated with let-7e. Low let-7e and high Rad51 were significantly associated with poor progression-free survival and overall survival and multivariate regression analyses showed that let-7e was an independent predictor for overall survival and chemotherapy response in EOC. Receiver operating characteristic analysis indicated that let-7e level was highly predictive of resistance to platinum-taxane chemotherapy with an area under the curve of 0.826. CONCLUSIONS In EOC, low let-7e leads to activation of BRCA1 and Rad51 expression and subsequent enhancement of DSB repair, which in turn results in cisplatin-resistance. Let-7e is a potential predictor for survival and chemo-response in EOC and re-expression of let-7e might be an effective strategy for overcoming chemo-resistance.
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Affiliation(s)
- Man Xiao
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Avenue, Wuhan, 430022, China
| | - Jing Cai
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Avenue, Wuhan, 430022, China
| | - Liqiong Cai
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Avenue, Wuhan, 430022, China
| | - Jinghui Jia
- Department of Obstetrics and Gynecology, Air Force General Hospital, PLA, Beijing, 100142, China
| | - Lisha Xie
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Avenue, Wuhan, 430022, China
| | - Ying Zhu
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Avenue, Wuhan, 430022, China
| | - Bangxing Huang
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Avenue, Wuhan, 430022, China
| | - Dongdong Jin
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Avenue, Wuhan, 430022, China
| | - Zehua Wang
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Avenue, Wuhan, 430022, China.
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Wu N, Zhu Q, Chen B, Gao J, Xu Z, Li D. High-throughput sequencing of pituitary and hypothalamic microRNA transcriptome associated with high rate of egg production. BMC Genomics 2017; 18:255. [PMID: 28335741 PMCID: PMC5364632 DOI: 10.1186/s12864-017-3644-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 03/18/2017] [Indexed: 01/21/2023] Open
Abstract
Background MicroRNAs exist widely in viruses, plants and animals. As endogenous small non-coding RNAs, miRNAs regulate a variety of biological processes. Tissue miRNA expression studies have discovered numerous functions for miRNAs in various tissues of chicken, but the regulation of miRNAs in chicken pituitary and hypothalamic development related to high and low egg-laying performance has remained unclear. Results In this study, using high-throughput sequencing technology, we sequenced two tissues (pituitary and hypothalamus) in 3 high- and 3 low-rate egg production Luhua chickens at the age of 300 days. By comparing low- and high-rate egg production chickens, 46 known miRNAs and 27 novel miRNAs were identified as differentially expressed (P < 0.05). Six differentially expressed known miRNAs, which are expressed in both tissues, were used in RT-qPCR validation and SNP detection. Among them, seven SNPs in two miRNA precursors (gga-miR-1684a and gga-miR-1434) were found that might enhance or reduce the production of the mature miRNAs. In addition, 124 and 30 reciprocally expressed miRNA-target pairs were identified by RNA-seq in pituitary and hypothalamic tissues, respectively and randomly selected candidate miRNA and miRNA-target pairs were validated by RT-qPCR in Jiuyuan black fowl. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway annotation illustrated that a large number of egg laying-related pathways were enriched in the high-rate egg production chickens, including ovarian steroidogenesis and steroid hormone biosynthesis. Conclusions These differentially expressed miRNAs and their predicted target genes, especially identified reciprocally expressed miRNA-target pairs, advance the study of miRNA function and egg production associated miRNA identification. The analysis of the miRNA-related SNPs and their effects provided insights into the effects of SNPs on miRNA biogenesis and function. The data generated in this study will further our understanding of miRNA regulation mechanisms in the chicken egg-laying process. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-3644-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nan Wu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, People's Republic of China, 610000
| | - Qing Zhu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, People's Republic of China, 610000
| | - Binlong Chen
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, People's Republic of China, 610000
| | - Jian Gao
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, People's Republic of China, 610000
| | - Zhongxian Xu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, People's Republic of China, 610000
| | - Diyan Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, People's Republic of China, 610000.
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Biersack B. Interactions between anticancer active platinum complexes and non-coding RNAs/microRNAs. Noncoding RNA Res 2017; 2:1-17. [PMID: 30159416 PMCID: PMC6096430 DOI: 10.1016/j.ncrna.2016.10.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 10/07/2016] [Accepted: 10/07/2016] [Indexed: 12/13/2022] Open
Abstract
Platinum(II) complexes such as cisplatin, carboplatin and oxaliplatin are clinically approved for the therapy of various solid tumors. Challenging pathogenic properties of cancer cells and the response of cancers towards platinum-based drugs are strongly influenced by non-coding small RNA molecules, the microRNAs (miRNAs). Both increased platinum activity and formation of tumor resistance towards platinum drugs are controlled by miRNAs. This review gives an overview of the interactions between platinum-based drugs and miRNAs, and their influence on platinum activity in various cancer types is discussed.
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Key Words
- 5-FU, 5-fluorouracil
- Anticancer drugs
- CBDCA, cyclobutane-1,1-dicarboxylate
- Carboplatin
- Cisplatin
- DACH, 1,2-diaminocyclohexane
- DDP, cisplatin
- EGCG, (−)-epigallocatechin-3-gallate
- EOX, epirubicin/oxaliplatin/xeloda
- FOLFOX, folinate/5-FU/oxaliplatin
- GC, gemcitabine/cisplatin, gastric cancer
- LNA, locked nucleic acid
- MVAC, methotrexate/vinblastine/adriamycin/cisplatin
- MicroRNA
- Oxaliplatin
- Platinum complexes
- XELOX, xeloda/oxaliplatin
- dTTP, deoxythymidine triphosphate
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Hashemi ZS, Khalili S, Forouzandeh Moghadam M, Sadroddiny E. Lung cancer and miRNAs: a possible remedy for anti-metastatic, therapeutic and diagnostic applications. Expert Rev Respir Med 2017; 11:147-157. [DOI: 10.1080/17476348.2017.1279403] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zahra Sadat Hashemi
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Science, Tehran, Iran
| | - Saeed Khalili
- Department of Clinical Laboratory Sciences, Dezful University of Medical Sciences, Dezful, Iran
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mehdi Forouzandeh Moghadam
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Esmaeil Sadroddiny
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Science, Tehran, Iran
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50
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Fang Y, Zhang L, Li Z, Li Y, Huang C, Lu X. MicroRNAs in DNA Damage Response, Carcinogenesis, and Chemoresistance. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2017; 333:1-49. [DOI: 10.1016/bs.ircmb.2017.03.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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