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Wu Z, Gong Z, Li C, Huang Z. RTEL1 is upregulated in colorectal cancer and promotes tumor progression. Pathol Res Pract 2023; 252:154958. [PMID: 37988793 DOI: 10.1016/j.prp.2023.154958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 10/23/2023] [Accepted: 11/16/2023] [Indexed: 11/23/2023]
Abstract
As one of the most common cancers worldwide, the incidence of colorectal cancer (CRC) continues to increase. Metastasis is the leading cause of death for this malignant disease. Regulator of telomere elongation helicase 1 (RTEL1) is a key factor that maintains telomere stability and contributes to DNA repair. Recent advances have suggested that RTEL1 exerts other functions through various mechanisms. However, little is known about its role in human cancers, including CRC. In this study, we revealed that the copy number of RTEL1 was significantly higher in CRC tissues, especially in metastatic CRC tissues, than in paired normal tissues, which was associated with increased expression. Increased RTEL1 expression was significantly correlated with CRC progression and poor survival. Functionally, RTEL1 knockdown suppressed the proliferation and metastasis of CRC both in vitro and in vivo. In addition, multiple signalling pathways, including the mitotic cell cycle, DNA repair, and EMT, were potentially regulated by RTEL1. Notably, GPR17 appeared to be a candidate downstream target gene that partially mediated the tumor-promoting effects of RTEL1 in CRC. Altogether, our results indicate that RTEL1 plays a crucial role in CRC progression and appears to be a promising therapeutic target and prognosis for CRC.
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Affiliation(s)
- Zhuochao Wu
- Wuxi Cancer Institute, Affiliated Hospital of Jiangnan University, Wuxi 214062, Jiangsu, China; Laboratory of Cancer Epigenetics, Wuxi School of Medicine, Jiangnan University, Wuxi 214062, Jiangsu, China
| | - Zhicheng Gong
- Wuxi Cancer Institute, Affiliated Hospital of Jiangnan University, Wuxi 214062, Jiangsu, China; Laboratory of Cancer Epigenetics, Wuxi School of Medicine, Jiangnan University, Wuxi 214062, Jiangsu, China
| | - Chaoqun Li
- Wuxi Cancer Institute, Affiliated Hospital of Jiangnan University, Wuxi 214062, Jiangsu, China; Laboratory of Cancer Epigenetics, Wuxi School of Medicine, Jiangnan University, Wuxi 214062, Jiangsu, China
| | - Zhaohui Huang
- Wuxi Cancer Institute, Affiliated Hospital of Jiangnan University, Wuxi 214062, Jiangsu, China; Laboratory of Cancer Epigenetics, Wuxi School of Medicine, Jiangnan University, Wuxi 214062, Jiangsu, China.
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2
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Zhang T, Zhou C, Guo J, Chang J, Wu H, He J. RTEL1 gene polymorphisms and neuroblastoma risk in Chinese children. BMC Cancer 2023; 23:1145. [PMID: 38001404 PMCID: PMC10675872 DOI: 10.1186/s12885-023-11642-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
BACKGROUND Neuroblastoma, a neuroendocrine tumor originating from the sympathetic ganglia, is one of the most common malignancies in childhood. RTEL1 is critical in many fundamental cellular processes, such as DNA replication, DNA damage repair, genomic integrity, and telomere stability. Single nucleotide polymorphisms (SNPs) in the RTEL1 gene have been reported to confer susceptibility to multiple cancers, but their contributing roles in neuroblastoma remain unclear. METHODS We conducted a study on 402 neuroblastoma cases and 473 controls to assess the association between four RTEL1 SNPs (rs3761124 T>C, rs3848672 T>C, rs3208008 A>C and rs2297441 G>A) and neuroblastoma susceptibility. RESULTS Our results show that rs3848672 T>C is significantly associated with an increased risk of neuroblastoma [CC vs. TT/TC: adjusted odds ratio (OR)=1.39, 95% confidence interval (CI)=1.02-1.90, P=0.038]. The stratified analysis further indicated that boy carriers of the rs3848672 CC genotype had a higher risk of neuroblastoma, and all carriers had an increased risk of developing neuroblastoma of mediastinum origin. Moreover, the rs2297441 AA genotype increased neuroblastoma risk in girls and predisposed children to neuroblastoma arising from retroperitoneal. CONCLUSION Our study indicated that the rs3848672 CC and rs2297441 AA genotypes of the RTEL1 gene are significantly associated with an increased risk of neuroblastoma in Chinese children in a gender- and site-specific manner.
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Affiliation(s)
- Ting Zhang
- Department of Clinical Laboratory, The Affiliated Wenling Hospital of Wenzhou Medical University, Taizhou, 317500, Zhejiang, China
| | - Chunlei Zhou
- Department of Pathology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing, 210008, Jiangsu, China
| | - Jiejie Guo
- Department of Clinical Laboratory, The Affiliated Wenling Hospital of Wenzhou Medical University, Taizhou, 317500, Zhejiang, China
| | - Jiamin Chang
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, 9 Jinsui Road, Guangzhou, 510623, Guangdong, China
| | - Haiyan Wu
- Department of Pathology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing, 210008, Jiangsu, China.
| | - Jing He
- Department of Clinical Laboratory, The Affiliated Wenling Hospital of Wenzhou Medical University, Taizhou, 317500, Zhejiang, China.
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, 9 Jinsui Road, Guangzhou, 510623, Guangdong, China.
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Petronek MS, Allen BG. Maintenance of genome integrity by the late-acting cytoplasmic iron-sulfur assembly (CIA) complex. Front Genet 2023; 14:1152398. [PMID: 36968611 PMCID: PMC10031043 DOI: 10.3389/fgene.2023.1152398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 02/24/2023] [Indexed: 03/29/2023] Open
Abstract
Iron-sulfur (Fe-S) clusters are unique, redox-active co-factors ubiquitous throughout cellular metabolism. Fe-S cluster synthesis, trafficking, and coordination result from highly coordinated, evolutionarily conserved biosynthetic processes. The initial Fe-S cluster synthesis occurs within the mitochondria; however, the maturation of Fe-S clusters culminating in their ultimate insertion into appropriate cytosolic/nuclear proteins is coordinated by a late-acting cytosolic iron-sulfur assembly (CIA) complex in the cytosol. Several nuclear proteins involved in DNA replication and repair interact with the CIA complex and contain Fe-S clusters necessary for proper enzymatic activity. Moreover, it is currently hypothesized that the late-acting CIA complex regulates the maintenance of genome integrity and is an integral feature of DNA metabolism. This review describes the late-acting CIA complex and several [4Fe-4S] DNA metabolic enzymes associated with maintaining genome stability.
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Hassani MA, Murid J, Yan J. Regulator of telomere elongation helicase 1 gene and its association with malignancy. Cancer Rep (Hoboken) 2022; 6:e1735. [PMID: 36253342 PMCID: PMC9875622 DOI: 10.1002/cnr2.1735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 09/26/2022] [Accepted: 09/28/2022] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND With the progression of next-generation sequencing technologies, researchers have identified numerous variants of the regulator of telomere elongation helicase 1 (RTEL1) gene that are associated with a broad spectrum of phenotypic manifestations, including malignancies. At the molecular level, RTEL1 is involved in the regulation of the repair, replication, and transcription of deoxyribonucleic acid (DNA) and the maintenance of telomere length. RTEL1 can act both as a promotor and inhibitor of tumorigenesis. Here, we review the potential mechanisms implicated in the malignant transformation of tissues under conditions of RTEL1 deficiency or its aberrant overexpression. RECENT FINDINGS A major hemostatic challenge during RTEL1 dysfunction could arise from its unbalanced activity for unwinding guanine-rich quadruplex DNA (G4-DNA) structures. In contrast, RTEL1 deficiency leads to alterations in telomeric and genome-wide DNA maintenance mechanisms, ribonucleoprotein metabolism, and the creation of an inflammatory and immune-deficient microenvironment, all promoting malignancy. Additionally, we hypothesize that functionally similar molecules could act to compensate for the deteriorated functions of RTEL1, thereby facilitating the survival of malignant cells. On the contrary, RTEL1 over-expression was directed toward G4-unwinding, by promoting replication fork progression and maintaining intact telomeres, may facilitate malignant transformation and proliferation of various pre-malignant cellular compartments. CONCLUSIONS Therefore, restoring the equilibrium of RTEL1 functions could serve as a therapeutic approach for preventing and treating malignancies.
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Affiliation(s)
- Mohammad Arian Hassani
- Department of Hematology, Liaoning Medical Center for Hematopoietic Stem Cell Transplantation, Liaoning Key Laboratory of Hematopoietic Stem Cell Transplantation and Translational Medicine, Dalian Key Laboratory of HematologySecond Hospital of Dalian Medical UniversityDalianChina,Department of Hematology, Endocrinology and Rheumatology, Ali Abad Teaching HospitalKabul University of Medical SciencesJamal menaKabulAfghanistan
| | - Jamshid Murid
- Department of Hematology, Endocrinology and Rheumatology, Ali Abad Teaching HospitalKabul University of Medical SciencesJamal menaKabulAfghanistan
| | - Jinsong Yan
- Department of Hematology, Liaoning Medical Center for Hematopoietic Stem Cell Transplantation, Liaoning Key Laboratory of Hematopoietic Stem Cell Transplantation and Translational Medicine, Dalian Key Laboratory of HematologySecond Hospital of Dalian Medical UniversityDalianChina,Diamond Bay Institute of HematologySecond Hospital of Dalian Medical UniversityDalianChina
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Dhar S, Datta A, Brosh RM. DNA helicases and their roles in cancer. DNA Repair (Amst) 2020; 96:102994. [PMID: 33137625 DOI: 10.1016/j.dnarep.2020.102994] [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: 09/25/2020] [Accepted: 09/28/2020] [Indexed: 12/15/2022]
Abstract
DNA helicases, known for their fundamentally important roles in genomic stability, are high profile players in cancer. Not only are there monogenic helicase disorders with a strong disposition to cancer, it is well appreciated that helicase variants are associated with specific cancers (e.g., breast cancer). Flipping the coin, DNA helicases are frequently overexpressed in cancerous tissues and reduction in helicase gene expression results in reduced proliferation and growth capacity, as well as DNA damage induction and apoptosis of cancer cells. The seminal roles of helicases in the DNA damage and replication stress responses, as well as DNA repair pathways, validate their vital importance in cancer biology and suggest their potential values as targets in anti-cancer therapy. In recent years, many laboratories have characterized the specialized roles of helicase to resolve transcription-replication conflicts, maintain telomeres, mediate cell cycle checkpoints, remodel stalled replication forks, and regulate transcription. In vivo models, particularly mice, have been used to interrogate helicase function and serve as a bridge for preclinical studies that may lead to novel therapeutic approaches. In this review, we will summarize our current knowledge of DNA helicases and their roles in cancer, emphasizing the latest developments.
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Affiliation(s)
- Srijita Dhar
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Arindam Datta
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Robert M Brosh
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA.
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Gu CY, Jin SM, Qin XJ, Zhu Y, Bo D, Lin GW, Shi GH, Ye DW. Genetic variants in RTEL1 influencing telomere length are associated with prostate cancer risk. J Cancer 2019; 10:6170-6174. [PMID: 31762827 PMCID: PMC6856594 DOI: 10.7150/jca.35917] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 08/25/2019] [Indexed: 12/23/2022] Open
Abstract
Telomere length measured in lymphocytes has been evaluated as a potential biomarker for prostate cancer (PCa) risk. Identifying genetic variants that affect telomere length and testing their association with disease could clarify any causal role. We therefore investigated associations between genetic variants in three telomere length-related genes and PCa risk in a case-control study. The influence of these variants on the leukocyte telomere lengths was then appraised by real-time PCR. RTEL1 rs2297441 [odds ratio (OR): 1.23; 95% confidence interval (CI): 1.03-1.46, P = 0.021] and rs3208008 (OR: 1.23; 95% CI: 1.03-1.46) were associated with PCa risk. These two risk single nucleotide polymorphisms (SNPs) (OR: 0.59; 95% CI: 0.39-0.89, P = 0.012 and OR: 0.58; 95% CI: 0.38-0.87, P = 0.009, respectively) and another SNP PARP1 rs1136410 (OR: 1.53; 95% CI: 1.01-2.31, P = 0.043) were also associated with leukocyte telomere length. These findings support that genetic determinants of telomere length may influence PCa risk.
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Affiliation(s)
- Cheng-Yuan Gu
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Sheng-Ming Jin
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiao-Jian Qin
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yao Zhu
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Dai Bo
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Guo-Wen Lin
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Guo-Hai Shi
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Ding-Wei Ye
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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Lu S, Zhong J, Wu M, Huang K, Zhou Y, Zhong Z, Li Q, Zhou H. Genetic analysis of the relation of telomere length-related gene (RTEL1) and coronary heart disease risk. Mol Genet Genomic Med 2019; 7:e550. [PMID: 30623606 PMCID: PMC6418357 DOI: 10.1002/mgg3.550] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 12/04/2018] [Accepted: 12/05/2018] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Regulator of telomere elongation helicase 1 (RTEL1), a telomere length-related gene, is closely linked to cancer and age-related diseases. The aim of this study was to investigate the association between genetic polymorphisms in the RTEL1 gene and coronary heart disease (CHD) risk. METHODS In this case-control study, which includes samples from 596 CHD patients and 603 healthy controls, five SNPs in RTEL1 were selected. The genotypes were studied using the Agena MassARRAY platform, and the statistical analyses were performed using the chi-square and Fisher's exact tests, genetic model analysis, and haplotype analysis. RESULTS In the allele model, using the chi-square test, we found that the patients with the "G" allele of rs6010620 and the "C" allele of rs4809324 in the RTEL1 gene showed a decreased risk of CHD once the results were adjusted for age and gender. In the genetic model, logistic regression analyses revealed that the rs6010620 polymorphism conferred a decreased risk of CHD in the codominant model (OR = 0.52, 95% CI: 0.31-0.88, p = 0.007 for the "G/G" genotype) and the recessive model (OR = 0.49, 95% CI: 0.30-0.80, p = 0.004 for the "G/G" genotype). In addition, the haplotype "Grs6010620 Trs6010621 Trs4809324 " of RTEL1 was associated with a 0.03-fold decreased risk of CHD once the results were adjusted for age and gender (OR = 0.03, 95% CI: 0.01-0.12, p < 0.001). CONCLUSION Our findings have demonstrated that the genetic variants of RTEL1 may have a protective role against CHD risk.
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Affiliation(s)
- Shijuan Lu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Institute of Clinical Pharmacology, Hunan Key Laboratory of Pharmacogenetics, Central South University, Changsha, China.,Department of Cardiology, Haikou People's Hospital, Central South University Xiangya School of Medicine Affliated Haikou Hospital, Haikou, China
| | - Jianghua Zhong
- Department of Cardiology, Haikou People's Hospital, Central South University Xiangya School of Medicine Affliated Haikou Hospital, Haikou, China
| | - Miao Wu
- Department of Cardiology, Haikou People's Hospital, Central South University Xiangya School of Medicine Affliated Haikou Hospital, Haikou, China
| | - Kang Huang
- Department of Cardiology, Haikou People's Hospital, Central South University Xiangya School of Medicine Affliated Haikou Hospital, Haikou, China
| | - Yilei Zhou
- Department of Cardiology, Haikou People's Hospital, Central South University Xiangya School of Medicine Affliated Haikou Hospital, Haikou, China
| | - Zanrui Zhong
- Department of Cardiology, Haikou People's Hospital, Central South University Xiangya School of Medicine Affliated Haikou Hospital, Haikou, China
| | - Qiang Li
- Department of Cardiology, Haikou People's Hospital, Central South University Xiangya School of Medicine Affliated Haikou Hospital, Haikou, China
| | - Honghao Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.,Institute of Clinical Pharmacology, Hunan Key Laboratory of Pharmacogenetics, Central South University, Changsha, China
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Cai Y, Zeng C, Su Q, Zhou J, Li P, Dai M, Wang D, Long F. Association of RTEL1 gene polymorphisms with stroke risk in a Chinese Han population. Oncotarget 2017; 8:114995-115001. [PMID: 29383136 PMCID: PMC5777748 DOI: 10.18632/oncotarget.22980] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 11/15/2017] [Indexed: 01/14/2023] Open
Abstract
We investigated the associations between single nucleotide polymorphisms (SNPs) in the regulator of telomere elongation helicase 1 (RTEL1) gene and stroke in the Chinese population. A total of 400 stroke patients and 395 healthy participants were included in this study. Five SNPs in RTEL1 were genotyped and the association with stroke risk was analyzed. Odds ratios (ORs) and 95% confidence intervals (95% CIs) were calculated using unconditional logistic regression analysis. Multivariate logistic regression analysis was used to identify SNPs that correlated with stroke. Rs2297441 was associated with an increased risk of stroke in an allele model (odds ratio [OR] = 1.24, 95% confidence interval [95% CI] = 1.01-1.52, p = 0.043). Rs6089953 was associated with an increased risk of stroke under the genotype model ([OR] = 1.862, [CI] = 1.123-3.085, p = 0.016). Rs2297441 was associated with an increased risk of stroke in an additive model (OR = 1.234, 95% CI = 1.005, p = 0.045, Rs6089953, Rs6010620 and Rs6010621 were associated with an increased risk of stroke in the recessive model (Rs6089953:OR = 1.825, 95% CI = 1.121-2.969, p =0.01546; Rs6010620: OR = 1.64, 95% CI = 1.008-2.669, p =0.04656;Rs6010621:OR = 1.661, 95% CI = 1.014-2.722, p =0.04389). Our findings reveal a possible association between SNPs in the RTEL1 gene and stroke risk in Chinese population.
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Affiliation(s)
- Yi Cai
- Department of Neurosurgery, The Second Affiliated Hospital of Hainan Medical College, Hainan 570311, China
| | - Chaosheng Zeng
- Department of Neurosurgery, The Second Affiliated Hospital of Hainan Medical College, Hainan 570311, China
| | - Qingjie Su
- Department of Neurosurgery, The Second Affiliated Hospital of Hainan Medical College, Hainan 570311, China
| | - Jingxia Zhou
- Department of Neurosurgery, The Second Affiliated Hospital of Hainan Medical College, Hainan 570311, China
| | - Pengxiang Li
- Department of Neurosurgery, The Second Affiliated Hospital of Hainan Medical College, Hainan 570311, China
| | - Mingming Dai
- Department of Neurosurgery, The Second Affiliated Hospital of Hainan Medical College, Hainan 570311, China
| | - Desheng Wang
- Department of Neurosurgery, The Second Affiliated Hospital of Hainan Medical College, Hainan 570311, China
| | - Faqing Long
- Department of Neurosurgery, The Second Affiliated Hospital of Hainan Medical College, Hainan 570311, China
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Studies of lncRNAs in DNA double strand break repair: what is new? Oncotarget 2017; 8:102690-102704. [PMID: 29254281 PMCID: PMC5731991 DOI: 10.18632/oncotarget.22090] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 09/24/2017] [Indexed: 01/06/2023] Open
Abstract
The ‘junk DNA’ that has haunted human genetics for a long time now turns out to hold enormous hidden treasures. As species had their genomes and transcriptomes sequenced, there are an overwhelming number of lncRNA transcripts being reported, however, less than 100 of them have been functionally characterized. DNA damage is recognized and quickly repaired by the cell, with increased expression of numerous genes involved in DNA repair. Most of the time the studies have focused only on proteins involved in these signaling pathways. However, recent studies have implied that lncRNAs can be broadly induced by DNA damage and regulate DNA repair processes by various mechanisms. In this paper, we focus on recent advances in the identification and functional characterization of novel lncRNAs participating in DNA double strand break repair.
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