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Spatial transcriptome analysis of long non-coding RNAs reveals tissue specificity and functional roles in cancer. J Zhejiang Univ Sci B 2023; 24:15-31. [PMID: 36632748 PMCID: PMC9837373 DOI: 10.1631/jzus.b2200206] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Long non-coding RNAs (lncRNAs) play a significant role in maintaining tissue morphology and functions, and their precise regulatory effectiveness is closely related to expression patterns. However, the spatial expression patterns of lncRNAs in humans are poorly characterized. Here, we constructed five comprehensive transcriptomic atlases of human lncRNAs covering thousands of major tissue samples in normal and disease states. The lncRNA transcriptomes exhibited high consistency within the same tissues across resources, and even higher complexity in specialized tissues. Tissue-elevated (TE) lncRNAs were identified in each resource and robust TE lncRNAs were refined by integrative analysis. We detected 1 to 4684 robust TE lncRNAs across tissues; the highest number was in testis tissue, followed by brain tissue. Functional analyses of TE lncRNAs indicated important roles in corresponding tissue-related pathways. Moreover, we found that the expression features of robust TE lncRNAs made them be effective biomarkers to distinguish tissues; TE lncRNAs also tended to be associated with cancer, and exhibited differential expression or were correlated with patient survival. In summary, spatial classification of lncRNAs is the starting point for elucidating the function of lncRNAs in both maintenance of tissue morphology and progress of tissue-constricted diseases.
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Mo M, Ma X, Luo Y, Tan C, Liu B, Tang P, Liao Q, Liu S, Yu H, Huang D, Zeng X, Qiu X. Liver-specific lncRNA FAM99A may be a tumor suppressor and promising prognostic biomarker in hepatocellular carcinoma. BMC Cancer 2022; 22:1098. [PMID: 36289466 PMCID: PMC9609286 DOI: 10.1186/s12885-022-10186-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 10/13/2022] [Indexed: 12/17/2022] Open
Abstract
Background Increasing evidence shows that liver-specific long non-coding RNAs (lncRNAs) play important roles in the development of hepatocellular carcinoma (HCC). We identified a novel liver-specific lncRNA, FAM99A, and examined its clinical significance and biological functions in HCC. Methods The expression level and clinical value of FAM99A in HCC were examined using The Cancer Genome Atlas (TCGA), International Cancer Genome Consortium (ICGC), and Gene Expression Omnibus (GEO) databases, and were further verified using quantitative real-time polymerase chain reaction (qRT–PCR) in our HCC cohort. Univariate and multivariate Cox proportional hazards regression models were also applied to identify independent prognostic indicators for HCC patients. Cell counting kit-8, colony formation, and Transwell assays were performed to evaluate the effects of FAM99A on the proliferation, migration, and invasion abilities of HCC cells in vitro. A subcutaneous xenograft tumor model was implemented to determine the effect of FAM99A on the tumor growth of HCC cells in vivo. RNA pull-down and mass spectrometry assays were performed to reveal the potential molecular mechanisms of FAM99A in HCC. Results The three public online databases and qRT–PCR data showed that FAM99A was frequently downregulated in HCC tissues and inversely correlated with microvascular invasion and advanced histological grade of HCC patients. Kaplan–Meier survival analysis indicated that decreased FAM99A was significantly associated with poor overall survival of HCC patients based on TCGA database (P = 0.040), ICGC data portal (P < 0.001), and our HCC cohort (P = 0.010). A multivariate Cox proportional hazards regression model based on our HCC cohort suggested that FAM99A was an independent prognostic factor of overall survival for HCC patients (hazard ratio: 0.425, P = 0.039). Upregulation of FAM99A suppressed the proliferation, colony formation, migration, and invasion capacities of HCC cells in vitro, and knockdown of FAM99A had the opposite effects. A subcutaneous xenograft tumor model demonstrated that overexpression of FAM99A significantly inhibited the tumor growth of HCC cells in vivo. Seven tumor-related proteins (PCBP1, SRSF5, SRSF6, YBX1, IGF2BP2, HNRNPK, and HNRNPL) were recognized as possible FAM99A-binding proteins by the RNA pull-down and mass spectrometry assays. Conclusion Our results suggest that FAM99A exerts cancer-inhibiting effects on HCC progression, and it may be a promising prognostic indicator for HCC patients. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-022-10186-2.
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Affiliation(s)
- Meile Mo
- grid.256607.00000 0004 1798 2653Department of Epidemiology, School of Public Health, Guangxi Medical University, Nanning, Guangxi 530021 P.R. China
| | - Xiaoyun Ma
- grid.27255.370000 0004 1761 1174Department of Epidemiology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012 P.R. China
| | - Yihuan Luo
- grid.412594.f0000 0004 1757 2961Department of Acute Care Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021 P.R. China
| | - Chao Tan
- grid.443385.d0000 0004 1798 9548Department of Epidemiology and Statistics, School of Public Health, Guilin Medical University, Guilin, Guangxi 541004 P.R. China
| | - Bihu Liu
- grid.256607.00000 0004 1798 2653Department of Epidemiology, School of Public Health, Guangxi Medical University, Nanning, Guangxi 530021 P.R. China
| | - Peng Tang
- grid.256607.00000 0004 1798 2653Department of Epidemiology, School of Public Health, Guangxi Medical University, Nanning, Guangxi 530021 P.R. China
| | - Qian Liao
- grid.256607.00000 0004 1798 2653Department of Epidemiology, School of Public Health, Guangxi Medical University, Nanning, Guangxi 530021 P.R. China
| | - Shun Liu
- grid.256607.00000 0004 1798 2653Department of Maternal, Child and Adolescent Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi 530021 P.R. China
| | - Hongping Yu
- grid.256607.00000 0004 1798 2653Guangxi Medical University Cancer Hospital, Nanning, Guangxi 530021 P.R. China
| | - Dongping Huang
- grid.256607.00000 0004 1798 2653Department of Sanitary Chemistry, School of Public Health, Guangxi Medical University, Nanning, Guangxi 530021 P.R. China
| | - Xiaoyun Zeng
- grid.256607.00000 0004 1798 2653Department of Epidemiology, School of Public Health, Guangxi Medical University, Nanning, Guangxi 530021 P.R. China
| | - Xiaoqiang Qiu
- grid.256607.00000 0004 1798 2653Department of Epidemiology, School of Public Health, Guangxi Medical University, Nanning, Guangxi 530021 P.R. China
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Non-Coding RNAs and Splicing Activity in Testicular Germ Cell Tumors. Life (Basel) 2021; 11:life11080736. [PMID: 34440480 PMCID: PMC8399856 DOI: 10.3390/life11080736] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/13/2021] [Accepted: 07/22/2021] [Indexed: 01/22/2023] Open
Abstract
Testicular germ cell tumors (TGCTs) are the most common tumors in adolescent and young men. Recently, genome-wide studies have made it possible to progress in understanding the molecular mechanisms underlying the development of tumors. It is becoming increasingly clear that aberrant regulation of RNA metabolism can drive tumorigenesis and influence chemotherapeutic response. Notably, the expression of non-coding RNAs as well as specific splice variants is deeply deregulated in human cancers. Since these cancer-related RNA species are considered promising diagnostic, prognostic and therapeutic targets, understanding their function in cancer development is becoming a major challenge. Here, we summarize how the different expression of RNA species repertoire, including non-coding RNAs and protein-coding splicing variants, impacts on TGCTs’ onset and progression and sustains therapeutic resistance. Finally, the role of transcription-associated R-loop misregulation in the maintenance of genomic stability in TGCTs is also discussed.
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Chen H, Xiang Y, Yin Y, Peng J, Peng D, Li D, Kitazawa R, Tang Y, Yang J. The m6A methyltransferase METTL3 regulates autophagy and sensitivity to cisplatin by targeting ATG5 in seminoma. Transl Androl Urol 2021; 10:1711-1722. [PMID: 33968659 PMCID: PMC8100844 DOI: 10.21037/tau-20-1411] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Background Our previous work shows Autophagy enhanced resistance to cisplatin in seminoma. The expression of the N6-methyladenosine (m6A) methyltransferases METTL3 was significantly increased in the cisplatin-resistant TCam-2 cell line of seminoma. We aimed to investigate the role of m6A methylation in autophagy and the chemosensitivity of seminoma cells. Methods Plasmid and siRNA were used to overexpress and knockdown METTL3. Autophagy was detected by western blot and immunofluorescence, respectively. The expression of downstream targets of METTL3 was detected by quantitative real-time PCR (qRT-PCR) and western blot, and the m6A level of them was detected by MeRIP-qPCR. Chemosensitivity of the TCam-2 cell line was identified through MTT assay. Results Upon METTL3 overexpression, autophagy of TCam-2 cell line was enhanced and its sensitivity to cisplatin was decreased. The use of autophagy inhibitors 3-methyladenine (3-MA) could reverse the protective effect of METTL3 on TCam-2 cells. We found that the up-regulation of METTL3 could increase the m6A modification level of ATG5 transcript, thus increased expression of ATG5. Moreover, knockdown of ATG5 reduced METTL3-induced autophagy, suggesting that ATG5 was a potential target for METTL3 to promote autophagy. Conclusions In summary, our research unveiled the unique mechanism by which m6A methylation regulates autophagy and chemosensitivity of the TCam-2 cell line and METTL3 was a potential target to overcome the cisplatin resistance of seminoma.
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Affiliation(s)
- Hanfei Chen
- Department of Urology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Yali Xiang
- Health Management Center, Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Yinghao Yin
- Department of Urology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Jingxuan Peng
- Department of Urology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Dongyi Peng
- Department of Urology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Dongjie Li
- Xiangya International Medical Center, Department of Geriatric Urology, Xiangya Hospital, Central South University, Changsha, China
| | - Riko Kitazawa
- Department of Diagnostic Pathology, Ehime University Hospital, Toon, Japan
| | - Yuxin Tang
- Department of Urology, Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China.,Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, China
| | - Jianfu Yang
- Department of Urology, The Third Xiangya Hospital of Central South University, Changsha, China
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Bresesti C, Vezzoli V, Cangiano B, Bonomi M. Long Non-Coding RNAs: Role in Testicular Cancers. Front Oncol 2021; 11:605606. [PMID: 33767982 PMCID: PMC7986848 DOI: 10.3389/fonc.2021.605606] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 01/05/2021] [Indexed: 12/13/2022] Open
Abstract
In the last few years lncRNAs have gained increasing attention among the scientific community, thanks to the discovery of their implication in many physio-pathological processes. In particular, their contribution to tumor initiation, progression, and response to treatment has attracted the interest of experts in the oncologic field for their potential clinical application. Testicular cancer is one of the tumors in which lncRNAs role is emerging. Said malignancies already have very effective treatments, which although lead to the development of quite serious treatment-related conditions, such as secondary tumors, infertility, and cardiovascular diseases. It is therefore important to study the impact of lncRNAs in the tumorigenesis of testicular cancer in order to learn how to exploit them in a clinical setting and to substitute more toxic treatments. Eventually, the use of lncRNAs as biomarkers, drug targets, or therapeutics for testicular cancer may represent a valid alternative to that of conventional tools, leading to a better management of this malignancy and its related conditions, and possibly even to the treatment of poor prognosis cases.
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Affiliation(s)
- Chiara Bresesti
- Department of Endocrine and Metabolic Medicine, IRCCS Istituto Auxologico Italiano, Milan, Italy
- Lab of Endocrine and Metabolic Researches, IRCCS Istituto Auxologico Italiano, Cusano Milanino, Italy
| | - Valeria Vezzoli
- Department of Endocrine and Metabolic Medicine, IRCCS Istituto Auxologico Italiano, Milan, Italy
- Lab of Endocrine and Metabolic Researches, IRCCS Istituto Auxologico Italiano, Cusano Milanino, Italy
| | - Biagio Cangiano
- Department of Endocrine and Metabolic Medicine, IRCCS Istituto Auxologico Italiano, Milan, Italy
- Lab of Endocrine and Metabolic Researches, IRCCS Istituto Auxologico Italiano, Cusano Milanino, Italy
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Marco Bonomi
- Department of Endocrine and Metabolic Medicine, IRCCS Istituto Auxologico Italiano, Milan, Italy
- Lab of Endocrine and Metabolic Researches, IRCCS Istituto Auxologico Italiano, Cusano Milanino, Italy
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
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Barth DA, Juracek J, Slaby O, Pichler M, Calin GA. lncRNA and Mechanisms of Drug Resistance in Cancers of the Genitourinary System. Cancers (Basel) 2020; 12:cancers12082148. [PMID: 32756406 PMCID: PMC7463785 DOI: 10.3390/cancers12082148] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 07/27/2020] [Accepted: 07/30/2020] [Indexed: 02/08/2023] Open
Abstract
Available systemic treatment options for cancers of the genitourinary system have experienced great progress in the last decade. However, a large proportion of patients eventually develop resistance to treatment, resulting in disease progression and shorter overall survival. Biomarkers indicating the increasing resistance to cancer therapies are yet to enter clinical routine. Long non-coding RNAs (lncRNA) are non-protein coding RNA transcripts longer than 200 nucleotides that exert multiple types of regulatory functions of all known cellular processes. Increasing evidence supports the role of lncRNAs in cancer development and progression. Additionally, their involvement in the development of drug resistance across various cancer entities, including genitourinary malignancies, are starting to be discovered. Consequently, lncRNAs have been suggested as factors in novel therapeutic strategies to overcome drug resistance in cancer. In this review, the existing evidences on lncRNAs and their involvement in mechanisms of drug resistance in cancers of the genitourinary system, including renal cell carcinoma, bladder cancer, prostate cancer, and testicular cancer, will be highlighted and discussed to facilitate and encourage further research in this field. We summarize a significant number of lncRNAs with proposed pathways in drug resistance and available reported studies.
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Affiliation(s)
- Dominik A. Barth
- Research Unit of Non-Coding RNAs and Genome Editing in Cancer, Division of Clinical Oncology, Department of Medicine, Comprehensive Cancer Center Graz, Medical University of Graz, 8036 Graz, Austria; (D.A.B.); (M.P.)
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
| | - Jaroslav Juracek
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, 62500 Brno, Czech Republic;
- Central European Institute of Technology, Masaryk University, 62500 Brno, Czech Republic
| | - Ondrej Slaby
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, 62500 Brno, Czech Republic;
- Central European Institute of Technology, Masaryk University, 62500 Brno, Czech Republic
| | - Martin Pichler
- Research Unit of Non-Coding RNAs and Genome Editing in Cancer, Division of Clinical Oncology, Department of Medicine, Comprehensive Cancer Center Graz, Medical University of Graz, 8036 Graz, Austria; (D.A.B.); (M.P.)
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - George A. Calin
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
- Correspondence:
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Huang Y, Xu YQ, Feng SY, Zhang X, Ni JD. LncRNA TDRG1 Promotes Proliferation, Invasion and Epithelial-Mesenchymal Transformation of Osteosarcoma Through PI3K/AKT Signal Pathway. Cancer Manag Res 2020; 12:4531-4540. [PMID: 32606946 PMCID: PMC7304679 DOI: 10.2147/cmar.s248964] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 04/23/2020] [Indexed: 12/14/2022] Open
Abstract
Objective This study aimed to investigate the effect of long non-coding TDRG1 on proliferation and migration of osteosarcoma cells through PI3K/AKT signaling pathway. Materials and Methods Altogether 87 cases of osteosarcoma tissues and adjacent tissues were collected, and osteosarcoma cells and osteoblasts were purchased. The expression of LncRNA TDRG1 in tissues and cells was detected by RT-PCR. Si-NC, si-TDRG1, and Sh-TDRG1 were transfected into osteosarcoma cells. L740Y-P (activator of PI3K/AKT pathway) and LY294002 (inhibitor of PI3k/AKT pathway) were used to interfere with PI3k/Akt signaling pathway in osteosarcoma cells. qRT-PCR was used to detect the expression of TDRG1 in osteosarcoma tissues and cells. WB was used to detect the expression of p-PI3K, p-AKT, N-cadherin, E-Cadherin, vimentin, Bax, Caspase-3, and Bcl-2 in cells. CCK-8, Transwell and cell scratch tests were used to detect cell proliferation, invasion and migration, and flow cytometry was used to detect cell apoptosis. Results TDRG1 was highly expressed in osteosarcoma, and the levels of p-PI3K and p-AKT were also up-regulated. Cell experiments showed that inhibiting the expression of TDRG1 could inhibit the proliferation, invasion, migration and EMT of osteosarcoma cells, promote the apoptosis of cells, and up-regulating the expression of TDRG1 could promote the proliferation, invasion, migration and EMT of osteosarcoma cells and inhibit the apoptosis of cells. The 740Y-P intervention could reverse the inhibition of Si-TDRG1 on osteosarcoma cell proliferation, invasion, migration and EMT and the promotion of cell apoptosis. LY294002 intervention could reverse the promotion of Sh-TDRG1 on osteosarcoma cell proliferation, invasion, migration and EMT and the inhibition of cell apoptosis. Conclusion TDRG1 is highly expressed in osteosarcoma tissue. Silencing the expression of osteosarcoma can inhibit the proliferation, invasion, migration and EMT of osteosarcoma cells by inhibiting PI3K/AKT signaling pathway, which may be a new target for diagnosis and treatment of osteosarcoma.
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Affiliation(s)
- Yan Huang
- Department of Orthopaedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan Province, People's Republic of China
| | - Yong-Qiang Xu
- Department of Orthopaedics, Hunan Provincial People's Hospital, Changsha, Hunan Province, People's Republic of China
| | - Si-Yin Feng
- Department of Orthopaedics, Hunan Provincial People's Hospital, Changsha, Hunan Province, People's Republic of China
| | - Xiang Zhang
- Department of Orthopaedics, Hunan Provincial People's Hospital, Changsha, Hunan Province, People's Republic of China
| | - Jiang-Dong Ni
- Department of Orthopaedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan Province, People's Republic of China
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8
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Gong Q, Dong W, Fan Y, Chen F, Bian X, Xu X, Qian T, Yu P. LncRNA TDRG1-Mediated Overexpression of VEGF Aggravated Retinal Microvascular Endothelial Cell Dysfunction in Diabetic Retinopathy. Front Pharmacol 2020; 10:1703. [PMID: 32082175 PMCID: PMC7005225 DOI: 10.3389/fphar.2019.01703] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 12/31/2019] [Indexed: 01/19/2023] Open
Abstract
Purpose Diabetic retinopathy (DR), a neurovascular disease, is one of the leading causes of blindness in working-age adults. Long noncoding RNAs (lncRNAs) have attracted attention as indicators for DR. This study aimed to characterize the role of lncRNA human testis development-related gene 1 (TDRG1) and its modulation of vascular endothelial growth factor (VEGF) in deteriorating DR. Methods Tissue samples were obtained from patients with epiretinal membranes (EMs) or proliferative DR, and human retinal microvascular endothelial cells (HRECs) were cultured with high-glucose medium to mimic DR as the in vitro model. The expression of lncRNA TDRG1 and VEGF was determined by immunofluorescence staining, Western blotting, and RT-qPCR. Transfection of small-interfering RNA was conducted to knock down target gene expression. HREC functions were evaluated by cell viability, fluorescein isothiocyanate (FITC)-dextran extravasation, migration, and tube formation assays under different conditions. Results LncRNA TDRG1 and VEGF were found to be co-expressed and significantly upregulated in fibrovascular membranes (FVMs) from DR patients compared to those from EM patients. In the in vitro model, hyperglycemic treatment markedly increased the expression of lncRNA TDRG1 and VEGF at the mRNA and protein levels, which promoted cell proliferation and migration, enhanced permeability, and disrupted tube formation of HRECs. However, knockdown of lncRNA TDRG1 or VEGF notably decreased the expression of VEGF and reversed the impaired functions of high-glucose-treated HRECs. Conclusions LncRNA TDRG1 promoted microvascular cell dysfunction via upregulating VEGF in the progression of DR and may serve as a potential therapeutic target in DR treatment.
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Affiliation(s)
- Qiaoyun Gong
- Department of Ophthalmology, Shanghai General Hospital, National Clinical Research Center for Eye Diseases, Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China
| | - Wenpei Dong
- Department of General Surgery, Hernia and Abdominal Wall Surgery Center of Shanghai Jiao Tong University, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Fan
- Department of Ophthalmology, Shanghai General Hospital, National Clinical Research Center for Eye Diseases, Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China
| | - Feng'e Chen
- Department of Ophthalmology, Shanghai General Hospital, National Clinical Research Center for Eye Diseases, Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China
| | - Xiaolan Bian
- Department of Pharmacy, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xun Xu
- Department of Ophthalmology, Shanghai General Hospital, National Clinical Research Center for Eye Diseases, Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China
| | - Tianwei Qian
- Department of Ophthalmology, Shanghai General Hospital, National Clinical Research Center for Eye Diseases, Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China.,Department of Ophthalmology, Leiden University Medical Center, Leiden, Netherlands
| | - Ping Yu
- Department of Pharmacy, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Sun R, Sun X, Liu H, Li P. Knockdown of lncRNA TDRG1 Inhibits Tumorigenesis in Endometrial Carcinoma Through the PI3K/AKT/mTOR Pathway. Onco Targets Ther 2019; 12:10863-10872. [PMID: 31849490 PMCID: PMC6912007 DOI: 10.2147/ott.s228168] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 11/21/2019] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Endometrial carcinoma (EC) is one of the most frequently diagnosed malignancies in females. Dysregulation of lncRNA TDRG1 has been widely documented in several cancers, including EC. However, the mechanism of this lncRNA involving in EC progression remains to be further elucidated. MATERIALS AND METHODS The enrichment levels of TDRG1 in EC tissues and cell lines were examined by RT-qPCR. Flow cytometry, cell counting kit-8 (CCK-8), transwell, and Western blot assays were conducted to assess whether TDRG1 knockdown could affect cell cycle arrest, proliferation, migration, invasion, and apoptosis of EC cells. The phosphorylation levels of mTOR, AKT and PI3K that associated with PI3K/Akt/mTOR pathway were determined by Western blot assay. RESULTS TDRG1 expression was markedly upregulated in EC tissues and cell lines. Knockdown of TDRG1 significantly induced cell cycle arrest and apoptosis, inhibited cell proliferation, restrained the invasion and migration abilities in EC cells. Moreover, TDRG1 silencing decreased the protein levels of p-AKT, p-PI3K, and p-mTOR of EC cells. CONCLUSION Our data underlined the implication of TDRG1 in EC progression, proposing that targeting TDRG1 might be a potential therapeutic avenue in EC.
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Affiliation(s)
- Ruimei Sun
- Department of Radiotherapy, The Affiliated Hospital of Weifang Medical University, Weifang261041, People’s Republic of China
| | - Xiujiang Sun
- Department of Thyroid and Breast Surgery, The Affiliated Hospital of Weifang Medical University, Weifang261041, People’s Republic of China
| | - Hua Liu
- Department of Gynaecology, The Affiliated Hospital of Weifang Medical University, Weifang261041, People’s Republic of China
| | - Peirui Li
- Department of Thyroid and Breast Surgery, The Affiliated Hospital of Weifang Medical University, Weifang261041, People’s Republic of China
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10
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Peng D, Wei J, Gan Y, Yang J, Jiang X, Kitazawa R, Xiang Y, Dai Y, Tang Y. Testis developmental related gene 1 regulates the chemosensitivity of seminoma TCam-2 cells to cisplatin via autophagy. J Cell Mol Med 2019; 23:7773-7784. [PMID: 31496041 PMCID: PMC6815826 DOI: 10.1111/jcmm.14654] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 08/08/2019] [Accepted: 08/15/2019] [Indexed: 12/12/2022] Open
Abstract
We previously identified testis developmental related gene 1 (TDRG1), a gene implicated in proliferation of TCam-2 seminoma cells. Recent evidence has revealed that autophagy influences the chemosensitivity of cancer cells to chemotherapy. However, whether TDRG1 protein regulates autophagy in seminoma cells and influences their sensitivity to cis-dichlorodiammine platinum (CDDP) remains unknown. In this study, we used TCam-2 cells and male athymic BALB/c nude mice with xenografts of TCam-2 cells to investigate autophagy, cell viability, apoptosis and the p110β/Rab5/Vps34 (PI3-kinase Class III) pathway under the conditions of TDRG1 overexpression or knockdown and with or without CDDP treatment. We found that TDRG1 upregulation promoted autophagy in both TCam-2 cells and seminoma xenografts via p110β/Rab5/Vps34 activation. Inhibition of autophagy reduced cell viability and promoted apoptosis during CDDP treatment of TCam-2 cells. Similarly, TDRG1 knockdown inhibited autophagy, reduced cell viability and promoted apoptosis during CDDP treatment of TCam-2 cells. TDRG1 knockdown inhibited tumour growth and promoted apoptosis in TCam-2 cell xenografts, whereas TDRG1 overexpression had the opposite effect. According to these results, we propose that high expression of TDRG1 promotes autophagy through the p110β/Rab5/Vps34 pathway in TCam-2 cells. TDRG1 overexpression promotes autophagy and leads to CDDP resistance, whereas TDRG1 knockdown inhibits autophagy and promotes chemosensitivity to CDDP both in vivo and in vitro. This study has uncovered a novel role of TDRG1 in reducing chemoresistance during CDDP treatment and provides potential therapeutic strategies for the treatment of human seminoma.
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Affiliation(s)
- Dongyi Peng
- Department of Urology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Jingchao Wei
- Department of Urology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Yu Gan
- Department of Urology, Xiangya Hospital of Central South University, Changsha, China
| | - Jianfu Yang
- Department of Urology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Xianzhen Jiang
- Department of Urology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Riko Kitazawa
- Department of Diagnostic Pathology, Ehime University Hospital, Toon, Japan
| | - Yali Xiang
- Department of Health Management Center, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Yingbo Dai
- Department of Urology, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Yuxin Tang
- Department of Urology, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
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Jiang H, liang M, Jiang Y, Zhang T, Mo K, Su S, Wang A, Zhu Y, Huang G, Zhou R. The lncRNA TDRG1 promotes cell proliferation, migration and invasion by targeting miR-326 to regulate MAPK1 expression in cervical cancer. Cancer Cell Int 2019; 19:152. [PMID: 31164797 PMCID: PMC6544966 DOI: 10.1186/s12935-019-0872-4] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Accepted: 05/27/2019] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Recently, lncRNA-Testis developmental related gene 1 (TDRG1) was proved to be a key modulator in reproductive organ-related cancers. The biological role of TDRG1 in cervical cancer (CC) progression remains largely unknown. METHOD Real-time PCR (qRT-PCR) examined the expression level of TDRG1, microRNA (miR)-326 and MAPK1 mRNA. OS tissues and corresponding relative normal tissues, as well as CC cell lines and normal cell line Ect1/E6E7 were collected to determine the expression of TDRG1 in CC. MTT, colony formation, wound-healing, transwell and flow cytometer assay detected the influence of TDRG1 and miR-326 on CC cells growth, metastasis and apoptosis. Western blot examined proteins level. Bioinformatics, RNA pull-down assay, RNA immunoprecipitation and dual-luciferase reporter assays detected the molecular mechanism of TDRG1 in CC. Xenograft tumour model was established to determine the role of TDRG1 in vivo. RESULTS The expression of TDRG1 was significantly increased in CC tissues and cell lines compared with normal tissue and normal cell line respectively and its expression was associated with clinicopathological characteristics of CC patients. Knockdown of TDRG1 inhibited the cell proliferation, migration and invasion in Hela and SIHA cells. Moreover, TDRG1 directly interacted with miR-326, and the inhibition effect on cell growth and metastasis induced by TDRG1 siRNA can be abrogated by miR-326 silencing by its inhibitor in Hela and SIHA cells. Further, MAPK1 was proved to be a direct target of miR-326, and its expression was negatively regulated by miR-326 while positively modulated by TDRG1. CONCLUSION TDRG1 acts as a competing endogenous lncRNA (ceRNA) to modulate MAPK1 by sponging miR-326 in CC, shedding new light on TDRG1-directed diagnostics and therapeutics in CC.
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Affiliation(s)
- Hui Jiang
- Department of Abdominal Oncology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510700 Guangdong China
- Department of Gynaecology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510700 Guangdong China
| | - Min liang
- Department of Abdominal Oncology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510700 Guangdong China
| | - Yanqiong Jiang
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510700 Guangdong China
| | - Ting Zhang
- Department of Gynaecology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510700 Guangdong China
| | - Kexin Mo
- Department of Gynaecology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510700 Guangdong China
| | - Suwen Su
- Department of Gynaecology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510700 Guangdong China
| | - Aiping Wang
- Department of Gynaecology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510700 Guangdong China
| | - Yongyi Zhu
- Department of Anesthesia, The Fifth Affiliated Hospital of Guangzhou Medical University, No. 621 Gangwan Road, Guangzhou, 510700 Guangdong China
| | - Guanqun Huang
- Department of General Surgery, The Fifth Affiliated Hospital of Guangzhou Medical University, No.621 Gangwan Road, Guangzhou, 510700 Guangdong China
| | - Rujian Zhou
- Department of General Surgery, The Fifth Affiliated Hospital of Guangzhou Medical University, No.621 Gangwan Road, Guangzhou, 510700 Guangdong China
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12
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Wu Z, Ai X, Hu H, Wang S, Wang Y, Kang F, Ouyang C, Zhu J. Hematopoietic-substrate-1 associated protein X-1 (HAX-1) regulates liver cancer cells growth, metastasis, and angiogenesis through Akt. Cancer Biol Ther 2019; 20:1223-1233. [PMID: 31132019 DOI: 10.1080/15384047.2019.1617562] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The aim of this study was to investigate the effects and mechanisms of hematopoietic-substrate-1-associated protein X-1 (HAX-1) on liver cancer cells. Information on HAX-1 from liver cancer patients was analyzed by the Cancer Genome Atlas (TCGA) program. Cell migration and invasion abilities were respectively tested by scratch assay and transwell assay. Tube formation assay was applied to detect angiogenesis protein and mRNA was determined using quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot. We found that the median month survival of HAX-1 overexpressing liver cancer patients was shorter than that of HAX-1 normal liver cancer patients. HAX-1 was overexpressed in liver cancer tissues and cells, and HAX-1 overexpression promoted the liver cancer cells growth, migration, and invasion, whereas silencing HAX-1 produced the opposite results. Inhibition of Akt by LY294002 reversed the migration and invasion abilities of liver cancer cells, and inhibited the ability of cells growth and angiogenesis. Silencing PIK3CA enhanced the inhibitory effects of HAX-1 silencing on the viability, migration, and invasion of liver cancer cells. HAX-1 affected liver cancer cells metastasis and angiogenesis by affecting Akt phosphorylation and FOXO3A expression.
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Affiliation(s)
- Zhenyu Wu
- Department of Hepatobiliary Surgery, Aerospace Center Hospital , Beijing , China
| | - Xiangnan Ai
- Department of Hepatobiliary Surgery, Aerospace Center Hospital , Beijing , China
| | - Hao Hu
- Department of Hepatobiliary Surgery, Aerospace Center Hospital , Beijing , China
| | - Siqi Wang
- Department of Hepatobiliary Surgery, Peking University People's Hospital , Beijing , China
| | - Yang Wang
- Department of Hepatobiliary Surgery, Peking University People's Hospital , Beijing , China
| | - Feng Kang
- Beijing Vitalstar Biotechnology Co., Ltd ., Beijing , China
| | - Caiguo Ouyang
- Department of Hepatobiliary Surgery, Aerospace Center Hospital , Beijing , China
| | - Jiye Zhu
- Department of Hepatobiliary Surgery, Peking University People's Hospital , Beijing , China
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13
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Wei J, Gan Y, Peng D, Jiang X, Kitazawa R, Xiang Y, Dai Y, Tang Y, Yang J. Long non-coding RNA H19 promotes TDRG1 expression and cisplatin resistance by sequestering miRNA-106b-5p in seminoma. Cancer Med 2018; 7:6247-6257. [PMID: 30430771 PMCID: PMC6308085 DOI: 10.1002/cam4.1871] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 10/23/2018] [Accepted: 10/24/2018] [Indexed: 12/11/2022] Open
Abstract
The role of TDRG1 in tumorigenesis and the progression of seminoma, as well as its role in regulating chemosensitivity of seminoma to cisplatin through the PI3K/Akt/mTOR signaling pathway, has been previously defined. However, the detailed mechanism underlying TDRG1 expression and concomitant chemoresistance conditions are unknown. Furthermore, it has been reported that non‐protein‐coding RNAs play an important role in a variety of vital processes including cellular chemosensitivity. However, the role of non‐protein‐coding RNAs in regulating the chemosensitivity of seminoma remains unknown. In this study, using microarray analysis, we found that long non‐coding RNA H19 was upregulated while miRNA‐106b‐5p was downregulated in an established cisplatin‐resistant TCam‐2 cell line. Moreover, H19 acts as a miRNA‐106b‐5p sponge and thus impairs the function of miRNA‐106b‐5p on its target gene, TDRG1. Based on these findings, we propose that H19 promotes the expression of TDRG1 by sequestering miRNA‐106b‐5p and uses this mechanism to facilitate cell survival in cisplatin‐based chemotherapeutic conditions. These findings elucidate the mechanisms, at least partially, applied to deregulate TDRG1 and cisplatin sensitivity, and may provide new therapeutic possibilities for chemoresistant seminoma.
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Affiliation(s)
- Jingchao Wei
- Department of UrologyThe Third Xiangya Hospital of Central South UniversityChangshaChina
| | - Yu Gan
- Department of UrologyThe Third Xiangya Hospital of Central South UniversityChangshaChina
- Department of UrologyXiangya Hospital of Central South UniversityChangshaChina
| | - Dongyi Peng
- Department of UrologyThe Third Xiangya Hospital of Central South UniversityChangshaChina
| | - Xianzhen Jiang
- Department of UrologyThe Third Xiangya Hospital of Central South UniversityChangshaChina
| | - Riko Kitazawa
- Department of Diagnostic PathologyEhime University HospitalToonJapan
| | - Yali Xiang
- Department of Health Management CenterThe Third Xiangya Hospital of Central South UniversityChangshaChina
| | - Yingbo Dai
- Department of UrologyThe Fifth Affiliated Hospital of Sun Yat‐sen UniversityZhuhaiChina
| | - Yuxin Tang
- Department of UrologyThe Third Xiangya Hospital of Central South UniversityChangshaChina
- Department of UrologyThe Fifth Affiliated Hospital of Sun Yat‐sen UniversityZhuhaiChina
| | - Jianfu Yang
- Department of UrologyThe Third Xiangya Hospital of Central South UniversityChangshaChina
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14
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Das MK, Furu K, Evensen HF, Haugen ØP, Haugen TB. Knockdown of SPRY4 and SPRY4-IT1 inhibits cell growth and phosphorylation of Akt in human testicular germ cell tumours. Sci Rep 2018; 8:2462. [PMID: 29410498 PMCID: PMC5802735 DOI: 10.1038/s41598-018-20846-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 12/20/2017] [Indexed: 12/19/2022] Open
Abstract
Testicular germ cell tumour (TGCT) is the most common cancer in young men in large parts of the world, but the aetiology is mainly unknown. Genome-wide association studies have so far identified about 50 susceptibility loci associated with TGCT, including SPRY4. SPRY4 has shown tumour suppressor activity in several cancer cells, such as lung and prostate, while it was found to act as an oncogene in ovarian cancer. An intronic region within the SPRY4 gene produces a long non-coding RNA, SPRY4-IT1, which has been reported to act as an oncogene in melanoma, breast cancer, and colorectal cancer, and as a tumour suppressor in lung cancer. The roles of SPRY4 and SPRY4-IT1 in TGCT development are yet unknown. We found higher expression levels of SPRY4, both mRNA and protein, and of SPRY4-IT1 in human TGCT than in normal adult testis. Small-interfering RNA (siRNA)-mediated transient knockdown of SPRY4 and SPRY4-IT1 in two TGCT cell lines 833 K and NT2-D1 resulted in decreased cell growth, migration, and invasion. Knockdown of SPRY4 and SPRY4-IT1 also led to a significant reduction in the phosphorylation of Akt. Our findings indicate that SPRY4 and SPRY4-IT1 may act as oncogenes in TGCTs via activation of the PI3K / Akt signalling pathway.
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Affiliation(s)
- Mrinal K Das
- Faculty of Health Sciences, OsloMet - Oslo Metropolitan University, Oslo, Norway.
| | - Kari Furu
- Faculty of Health Sciences, OsloMet - Oslo Metropolitan University, Oslo, Norway.,Cancer Registry, Oslo, Norway
| | - Herman F Evensen
- Faculty of Health Sciences, OsloMet - Oslo Metropolitan University, Oslo, Norway
| | - Øyvind P Haugen
- Faculty of Health Sciences, OsloMet - Oslo Metropolitan University, Oslo, Norway.,Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Trine B Haugen
- Faculty of Health Sciences, OsloMet - Oslo Metropolitan University, Oslo, Norway
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15
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Gan Y, Wang Y, Tan Z, Zhou J, Kitazawa R, Jiang X, Tang Y, Yang J. TDRG1 regulates chemosensitivity of seminoma TCam-2 cells to cisplatin via PI3K/Akt/mTOR signaling pathway and mitochondria-mediated apoptotic pathway. Cancer Biol Ther 2016; 17:741-50. [PMID: 27104982 DOI: 10.1080/15384047.2016.1178425] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
We previously identified TDRG1 (testis developmental related gene 1), a novel gene with exclusive expression in testis, promoted the proliferation and progression of cultured human seminoma cells through PI3K/Akt/mTOR signaling. As increasing evidence reveal that aberrant activation of this signaling is involved in cisplatin resistance. Then, in this study, we further explored whether TDRG1 regulated the chemosensitivity of seminoma TCam-2 cells to cisplatin. Our researches showed TDRG1 could regulate the viability of TCam-2 cells following cisplatin treatment in vitro through control of both cell apoptosis and cell cycle. Mechanistically, we observed TDRG1 positively regulated the expression levels of the key elements in PI3K/Akt/mTOR pathway including p-PI3K, p-Akt and p-mTOR and also affected the translocation of nuclear p-Akt in TCam-2 cells during cisplatin treatment. Meanwhile, the levels of Bad, cytochrome c, caspase-9 ratio (activated/total), caspase-3 ratio (activated/total) and cleaved-PARP were negatively modulated by TDRG1, which meant the involvement of mitochondria-mediated apoptotic pathway. Furthermore, we found the effect of TDRG1 knockdown or TDRG1 overexpression could be reversed by IGF-1, a PI3K signaling activator, or LY294002, a inhibitor of this pathway, respectively. Similar effects of TDRG1 on cisplatin chemosensitivity and associated molecular mechanism were also confirmed in vivo by employing xenograft assays. In addition, the positive correlation between TDRG1 and p-PI3K, or p-Akt, was found in tumor tissues from seminoma patients. In conclusion, we uncover that TDRG1 regulates chemosensitivity of TCam-2 cells to cisplatin through PI3K/Akt/mTOR signaling and mitochondria-mediated apoptotic pathway both in vitro and in vivo.
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Affiliation(s)
- Yu Gan
- a Department of Urology , The Third Xiangya Hospital of Central South University , Changsha , PR China
| | - Yong Wang
- a Department of Urology , The Third Xiangya Hospital of Central South University , Changsha , PR China
| | - Zhengyu Tan
- a Department of Urology , The Third Xiangya Hospital of Central South University , Changsha , PR China
| | - Jun Zhou
- a Department of Urology , The Third Xiangya Hospital of Central South University , Changsha , PR China
| | - Riko Kitazawa
- b Department of Diagnostic Pathology , Ehime University Hospital, Shitsukawa , Tōon , Ehime Perfecture , Japan
| | - Xianzhen Jiang
- a Department of Urology , The Third Xiangya Hospital of Central South University , Changsha , PR China
| | - Yuxin Tang
- a Department of Urology , The Third Xiangya Hospital of Central South University , Changsha , PR China
| | - Jianfu Yang
- a Department of Urology , The Third Xiangya Hospital of Central South University , Changsha , PR China
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