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Fu X, Xiong Y, Tang R, Li X, Liu H, Ren X. Association of hTERT Gene Polymorphism and Colorectal Cancer (CRC) Risk in the Chinese Han Population. TOHOKU J EXP MED 2024; 263:89-95. [PMID: 38296486 DOI: 10.1620/tjem.2024.j008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
The catalytic subunit telomerase reverse transcriptase (hTERT) is a prerequisite for malignant transformation of human cells. Colorectal cancer (CRC) is a common malignant tumor. The genetic association of hTERT gene rs2853669 and rs2736098 polymorphisms with CRC was surveyed in the Chinese population. Two hundreds patients with CRC and 200 healthy controls were taken for blood sample collection. Sanger sequencing was applied for genotyping. Multiple logistic regression analysis was performed, and odds ratio (OR) together with confidence interval (CI) were calculated to obtain the corresponding association power. Among CRC cases (49.50%), hTERT gene rs2736098 GA genotype carriers were more prevalent compared with the control group (41.00%, P = 0.035), which increased the risk of CRC by 1.576 times (95% CI, 1.031-2.409). Distribution of the rs2736098 genotypes was significantly associated with TNM stage, tumor differentiation, tumor size and lymph node metastasis (P < 0.05). The frequencies of hTERT gene rs2853669 polymorphism were not significantly different between CRC patients and healthy controls. Logistic regression analysis indicated that both body mass index (BMI) and hTERT gene rs2736098 polymorphism remained significantly correlated with CRC susceptibility. The frequencies of hTERT gene rs2853669 polymorphism did not differ significantly between CRC patients and control group (P > 0.05). The hTERT gene rs2736098 polymorphism was correlated with CRC risk in the Chinese Han population, and the GA genotype was a risk element for the onset of CRC.
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Affiliation(s)
- Xianxian Fu
- Department of Laboratory, Haikou People's Hospital
| | - Yanyan Xiong
- Department of Integrated Traditional Chinese and Western Medicine, West China Hospital of Sichuan University
| | - Renjin Tang
- Department of Integrated Traditional Chinese and Western Medicine, Chengdu Shangjin Nanfu Hospital
| | - Xuelin Li
- Department of Integrated Traditional Chinese and Western Medicine, Chengdu Shangjin Nanfu Hospital
| | - Hong Liu
- Department of Integrated Traditional Chinese and Western Medicine, West China Hospital of Sichuan University
| | - Xiaowei Ren
- Department of Anorectal, Fuling Hospital of Chinese Medicine
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Bao Y, Pan Z, Zhao L, Qiu J, Cheng J, Liu L, Qian D. BIBR1532 combined with radiotherapy induces ferroptosis in NSCLC cells and activates cGAS-STING pathway to promote anti-tumor immunity. J Transl Med 2024; 22:519. [PMID: 38816831 PMCID: PMC11138045 DOI: 10.1186/s12967-024-05331-3] [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: 12/08/2023] [Accepted: 05/18/2024] [Indexed: 06/01/2024] Open
Abstract
BACKGROUND Telomerase, by safeguarding damaged telomeres and bolstering DNA damage repair, has the capacity to heighten the radioresistance of tumour cells. Thus, in turn, can compromise the efficacy of radiotherapy (RT) and radioimmunotherapy. Our previous studies have revealed that the highly selective telomerase inhibitor, BIBR1532, possesses the potential to enhance the radiosensitivity of Non-small cell lung cancer (NSCLC). In this study, we delve further into the impact of BIBR1532 on the immune activation induced by RT and elucidate the underlying mechanisms. METHODS Biological information analyses, immunofluorescence assays, western blot assays, flow cytometry analysis were conducted to elucidate the functions of the combination of BIBR1532 with radiotherapy in NSCLC. Intracellular levels of lipid peroxides, glutathione, malondialdehyde, and Fe2+ were measured as indicators of ferroptosis status. Both in vitro and in vivo studies were conducted to examine the antitumor effects. RESULTS Our findings indicate that the confluence of BIBR1532 with RT significantly augments the activation of the cGAS-STING pathway in both in vivo and in vitro settings, thereby fostering an effective anti-tumoral immune response. The effects can be ascribed to two key processes. Firstly, ionizing radiation, in precipitating DNA double-strand breaks (DSBs), prompts the release of tumour-derived double-stranded DNA (dsDNA) into the cytoplasm. Subsequently, BIBR1532 amplifies the activation of antigen-presenting cells by dsDNA post-RT and instigates the cGAS-STING pathway. Secondly, BIBR1532 enhances the ferroptosis response in NSCLC following RT, thereby promoting unrestrained lipid peroxidation and elevated levels of reactive oxygen species (ROS) within tumour cells. This ultimately leads to mitochondrial stress and the release of endogenous mitochondrial DNA (mtDNA) into the cytoplasm, thus facilitating the activation of the STING pathway and the induction of a type I interferon (IFN)-linked adaptive immune response. CONCLUSION This study underscores the potential of BIBR1532 as an efficacious and safe radiosensitizer and radioimmunotherapy synergist, providing robust preclinical research evidence for the treatment of NSCLC.
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Affiliation(s)
- Yawei Bao
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
- Core Facility Center, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Zhipeng Pan
- Department of Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230000, China
| | - Luqi Zhao
- Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, 77204-5039, USA
| | - Jieping Qiu
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
- Core Facility Center, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Jingjing Cheng
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
- Core Facility Center, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Lei Liu
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
- Core Facility Center, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Dong Qian
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China.
- Core Facility Center, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China.
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Effect of transoral laser microsurgery vs open partial laryngectomy on the prognosis of patients with early laryngeal carcinoma: propensity score-based analysis. Eur Arch Otorhinolaryngol 2023; 280:1301-1310. [PMID: 36239784 DOI: 10.1007/s00405-022-07671-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 09/20/2022] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To evaluate the effect of surgical procedures (transoral laser microsurgery (TLM) and open partial laryngectomy (OPL)) on the prognosis of patients with early laryngeal cancer. METHODS A total of 760 patients diagnosed with early laryngeal cancer (T1-2N0M0) and treated with TLM (n = 416) or OPL (n = 344) between 2004 and 2015 were abstracted from the SEER database. Propensity score matching (PSM) and stabilized inverse probability of treatment weighting (SIPTW) were performed to obtain comparable cohorts. The survival rates were estimated by the Kaplan-Meier method, and compared using the log-rank test. Univariate and multivariate Cox regression analyses with a false discovery rate (FDR) correction were applied to contrast the association between two surgical approaches and overall survival (OS) and disease-specific survival (DSS). RESULTS The 5-year OS for the TLM group was 79.5% versus 77.7% for the OPL group (P = 0.619). Similar results were revealed for the comparison of 5-year DSS rates (91.1% versus 91.5%, P = 0.891). After PSM and SIPTW balance the confounding factors, no significant difference was observed in the OS and DSS of patients treated with TLM compared to patients treated with OPL. The consistent results were still yielded (all P > 0.05), when stratified by gender, age, year of diagnosis, residence, household income, tumor site, T stage, differentiation, and adjuvant therapy. CONCLUSION This study provides strong evidence that there is no significant difference in the prognosis of early laryngeal carcinoma between the treatment of TLM and OPL, which may be helpful to guide the clinical decision-making of these patients.
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Sánchez-Morán I, Rodríguez C, Lapresa R, Agulla J, Sobrino T, Castillo J, Bolaños JP, Almeida A. Nuclear WRAP53 promotes neuronal survival and functional recovery after stroke. SCIENCE ADVANCES 2020; 6:6/41/eabc5702. [PMID: 33028529 PMCID: PMC7541066 DOI: 10.1126/sciadv.abc5702] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 08/18/2020] [Indexed: 05/07/2023]
Abstract
Failure of neurons to efficiently repair DNA double-strand breaks (DSBs) contributes to cerebral damage after stroke. However, the molecular machinery that regulates DNA repair in this neurological disorder is unknown. Here, we found that DSBs in oxygen/glucose-deprived (OGD) neurons spatiotemporally correlated with the up-regulation of WRAP53 (WD40-encoding p53-antisense RNA), which translocated to the nucleus to activate the DSB repair response. Mechanistically, OGD triggered a burst in reactive oxygen species that induced both DSBs and translocation of WRAP53 to the nucleus to promote DNA repair, a pathway that was confirmed in an in vivo mouse model of stroke. Noticeably, nuclear translocation of WRAP53 occurred faster in OGD neurons expressing the Wrap53 human nonsynonymous single-nucleotide polymorphism (SNP) rs2287499 (c.202C>G). Patients carrying this SNP showed less infarct volume and better functional outcome after stroke. These results indicate that WRAP53 fosters DNA repair and neuronal survival to promote functional recovery after stroke.
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Affiliation(s)
- Irene Sánchez-Morán
- Institute of Functional Biology and Genomics, CSIC, University of Salamanca, Calle Zacarías González 2, 37007 Salamanca, Spain
- Institute of Biomedical Research of Salamanca, University Hospital of Salamanca, University of Salamanca, CSIC, Calle Zacarías González 2, 37007 Salamanca, Spain
| | - Cristina Rodríguez
- Institute of Functional Biology and Genomics, CSIC, University of Salamanca, Calle Zacarías González 2, 37007 Salamanca, Spain
- Institute of Biomedical Research of Salamanca, University Hospital of Salamanca, University of Salamanca, CSIC, Calle Zacarías González 2, 37007 Salamanca, Spain
| | - Rebeca Lapresa
- Institute of Functional Biology and Genomics, CSIC, University of Salamanca, Calle Zacarías González 2, 37007 Salamanca, Spain
- Institute of Biomedical Research of Salamanca, University Hospital of Salamanca, University of Salamanca, CSIC, Calle Zacarías González 2, 37007 Salamanca, Spain
| | - Jesús Agulla
- Institute of Functional Biology and Genomics, CSIC, University of Salamanca, Calle Zacarías González 2, 37007 Salamanca, Spain
- Institute of Biomedical Research of Salamanca, University Hospital of Salamanca, University of Salamanca, CSIC, Calle Zacarías González 2, 37007 Salamanca, Spain
| | - Tomás Sobrino
- Clinical Neurosciences Research Laboratory, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - José Castillo
- Clinical Neurosciences Research Laboratory, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Juan P Bolaños
- Institute of Functional Biology and Genomics, CSIC, University of Salamanca, Calle Zacarías González 2, 37007 Salamanca, Spain
- Institute of Biomedical Research of Salamanca, University Hospital of Salamanca, University of Salamanca, CSIC, Calle Zacarías González 2, 37007 Salamanca, Spain
- CIBERFES, Instituto de Salud Carlos III, Madrid, Spain
| | - Angeles Almeida
- Institute of Functional Biology and Genomics, CSIC, University of Salamanca, Calle Zacarías González 2, 37007 Salamanca, Spain.
- Institute of Biomedical Research of Salamanca, University Hospital of Salamanca, University of Salamanca, CSIC, Calle Zacarías González 2, 37007 Salamanca, Spain
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Yin H, Wang X, Zhang X, Zeng Y, Xu Q, Wang W, Zhou F, Zhou Y. UBE2T promotes radiation resistance in non-small cell lung cancer via inducing epithelial-mesenchymal transition and the ubiquitination-mediated FOXO1 degradation. Cancer Lett 2020; 494:121-131. [PMID: 32590022 DOI: 10.1016/j.canlet.2020.06.005] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 06/01/2020] [Accepted: 06/03/2020] [Indexed: 12/18/2022]
Abstract
Radiation resistance affects survival in non-small-cell lung cancer (NSCLC) patients. Further exploration of mechanisms and targets is urgently needed. Using bioinformatic analyses, we found that UBE2T is associated with survival, tumor size, lymph node metastasis and distant metastasis. Then, real-time PCR and immunohistochemistry were performed to explore the differentially expressed genes between normal and NSCLC tissues. Furthermore, we used colony formation, EdU incorporation, scratch, transwell assays, flow cytometry, immunofluorescence and western blot to assess the role of UBE2T in vitro and in vivo. RNA-Seq and coimmunoprecipitation were used to explore the mechanism. The results showed that UBE2T promotes proliferation, migration, invasion, and radiation resistance in vitro and in vivo by accelerating the G2/M transition and inhibiting apoptosis. Mechanistically, UBE2T promotes epithelial-mesenchymal transition (EMT) via ubiquitination-mediated FOXO1 degradation and Wnt/β-catenin signaling pathway activation. Moreover, FOXO1 reversed radiation resistance and EMT. Therefore, UBE2T may be a potential target for enhancing radiotherapy sensitivity and serve as a biomarker to predict prognosis.
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Affiliation(s)
- Hang Yin
- Hubei Key Laboratory of Tumor Biological Behaviors, Zhongnan Hospital of Wuhan University, Wuhan, China; Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China; Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuchang, Wuhan, China; Department of Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang Province, China
| | - Xiaoyuan Wang
- Department of Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang Province, China
| | - Xue Zhang
- Hubei Key Laboratory of Tumor Biological Behaviors, Zhongnan Hospital of Wuhan University, Wuhan, China; Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China; Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuchang, Wuhan, China
| | - Yangyang Zeng
- Hubei Key Laboratory of Tumor Biological Behaviors, Zhongnan Hospital of Wuhan University, Wuhan, China; Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China; Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuchang, Wuhan, China
| | - Qingyong Xu
- Department of Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang Province, China
| | - Wenbo Wang
- Hubei Key Laboratory of Tumor Biological Behaviors, Zhongnan Hospital of Wuhan University, Wuhan, China; Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China; Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuchang, Wuhan, China.
| | - Fuxiang Zhou
- Hubei Key Laboratory of Tumor Biological Behaviors, Zhongnan Hospital of Wuhan University, Wuhan, China; Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China; Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuchang, Wuhan, China
| | - Yunfeng Zhou
- Hubei Key Laboratory of Tumor Biological Behaviors, Zhongnan Hospital of Wuhan University, Wuhan, China; Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China; Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuchang, Wuhan, China.
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Srinivas N, Rachakonda S, Kumar R. Telomeres and Telomere Length: A General Overview. Cancers (Basel) 2020; 12:E558. [PMID: 32121056 PMCID: PMC7139734 DOI: 10.3390/cancers12030558] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 02/24/2020] [Accepted: 02/26/2020] [Indexed: 02/06/2023] Open
Abstract
Telomeres are highly conserved tandem nucleotide repeats that include proximal double-stranded and distal single-stranded regions that in complex with shelterin proteins afford protection at chromosomal ends to maintain genomic integrity. Due to the inherent limitations of DNA replication and telomerase suppression in most somatic cells, telomeres undergo age-dependent incremental attrition. Short or dysfunctional telomeres are recognized as DNA double-stranded breaks, triggering cells to undergo replicative senescence. Telomere shortening, therefore, acts as a counting mechanism that drives replicative senescence by limiting the mitotic potential of cells. Telomere length, a complex hereditary trait, is associated with aging and age-related diseases. Epidemiological data, in general, support an association with varying magnitudes between constitutive telomere length and several disorders, including cancers. Telomere attrition is also influenced by oxidative damage and replicative stress caused by genetic, epigenetic, and environmental factors. Several single nucleotide polymorphisms at different loci, identified through genome-wide association studies, influence inter-individual variation in telomere length. In addition to genetic factors, environmental factors also influence telomere length during growth and development. Telomeres hold potential as biomarkers that reflect the genetic predisposition together with the impact of environmental conditions and as targets for anti-cancer therapies.
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Affiliation(s)
| | | | - Rajiv Kumar
- Division of Functional Genome Analysis, German Cancer Research Center, Im Neunheimer Feld 580, 69120 Heidelberg, Germany; (N.S.); (S.R.)
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