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Cheng H, Wang S, Gao D, Yu K, Chen H, Huang Y, Li M, Zhang J, Guo K. Nucleotide sugar transporter SLC35A2 is involved in promoting hepatocellular carcinoma metastasis by regulating cellular glycosylation. Cell Oncol (Dordr) 2022; 46:283-297. [PMID: 36454514 DOI: 10.1007/s13402-022-00749-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 11/09/2022] [Accepted: 11/14/2022] [Indexed: 12/05/2022] Open
Abstract
PURPOSE Recently, aberrant glycosylation has been recognized to be relate to malignant behaviors of cancer and outcomes of patients with various cancers. SLC35A2 plays an indispensable role on glycosylation as a nucleotide sugar transporter. However, effects of SLC35A2 on malignant behaviors of cancer cells and alteration of cancer cells surface glycosylation profiles are still not fully understood, particularly in hepatocellular carcinoma (HCC). Hence, from a glycosylation perspective, we investigated the effects of SLC35A2 on metastatic behaviors of HCC cells. METHODS SLC35A2 expression in clinical samples and HCC cells was examined by immunohistochemical staining or Western blot/quantitative PCR and was regulated by RNA interference or vectors-mediated transfection. Effects of SLC35A2 expression alteration on metastatic behaviors and membrane glycan profile of HCC cells were observed by using respectively invasion, migration, cell adhesion assay, in vivo lung metastatic nude mouse model and lectins microarray. Co-location among proteins in HCC cells was observed by fluorescence microscope and detected by an in vitro co-immunoprecipitation assay. RESULTS SLC35A2 was upregulated in HCC tissues, and is associated with poor prognosis of HCC patients. SLC35A2 expression alteration significantly affected the invasion, adhesion, metastasis and membrane glycan profile and led to the dysregulated expressions or glycosylation of cell adhesion-related molecules in HCC cells. Mechanistically, the maintenance of SLC35A2 activity is critical for the recruitment of the key galactosyltransferase B4GalT1, which is responsible for complex glycoconjugate and lactose biosynthesis, to Golgi apparatus in HCC cells. CONCLUSION SLC35A2 plays important roles in promoting HCC metastasis by regulating cellular glycosylation modification and inducing the cell adhesive ability of HCC cells.
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Alamilla-Presuel JC, Burgos-Molina AM, González-Vidal A, Sendra-Portero F, Ruiz-Gómez MJ. Factors and molecular mechanisms of radiation resistance in cancer cells. Int J Radiat Biol 2022; 98:1301-1315. [PMID: 35225732 DOI: 10.1080/09553002.2022.2047825] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PURPOSE The aim of this work is to review the published studies on radiation resistance mechanisms and molecular markers involved in different tumors. The revision has been focused in the last 5 years (2016-2021). CONCLUSIONS Radioresistance is a cause of concern as it causes failure of radiation therapy and subsequent tumor relapse. Combination chemotherapy and radiation therapy are clinically successful in treating many types of tumors. Despite continued improvements in cancer treatment, locoregional recurrence or metastatic spread continues to occur in a high proportion of patients after being treated with radiation therapy or combination treatments. There is strong evidence that cancer stem cells contribute to radiation resistance, contributing to treatment failure. The mechanisms of radiation resistance in different tumors are not fully understood. A better understanding of cancer stem cells and the associated signaling pathways that regulate radiation resistance will open up new strategies for treating cancer by radiation therapy. Radiation can damage malignant cells mainly by the induction of DNA double strand breaks. However, in some tumors appear resistant cells that repopulate the tumor following therapy leading over time to the failure of the treatment. Native mechanisms and induced pathways, are the cause of radiation resistance. It has been described that numerous molecular markers acting through numerous mechanisms of action involved in radiation resistance, such as apoptosis resistance, alterations of cell growth, proliferation and DNA repair, hypoxia, increase in invasiveness and migration capacity, cell cycle alterations and expression of heat shock proteins, among others. Therefore, resistance to radiation is a multifactorial phenomenon that, in different cell types, it occurs through different regulatory mechanisms in which different molecules intervene. Resistance can be acquired by altering different regulatory pathways in different tumors. The knowledge of radiation resistance markers could help in the classification and treatment of patients with more aggressive tumors.
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Affiliation(s)
- Juan C Alamilla-Presuel
- Departamento de Radiología y Medicina Física, Facultad de Medicina, Universidad de Málaga, Málaga, España
| | - Antonio M Burgos-Molina
- Departamento de Especialidades Quirúrgicas, Bioquímica e Inmunología, Facultad de Medicina, Universidad de Málaga, Málaga, España
| | - Alejandro González-Vidal
- Departamento de Radiología y Medicina Física, Facultad de Medicina, Universidad de Málaga, Málaga, España
| | - Francisco Sendra-Portero
- Departamento de Radiología y Medicina Física, Facultad de Medicina, Universidad de Málaga, Málaga, España
| | - Miguel J Ruiz-Gómez
- Departamento de Radiología y Medicina Física, Facultad de Medicina, Universidad de Málaga, Málaga, España
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Bouchard G, Garcia Marques FJ, Karacosta LG, Zhang W, Bermudez A, Riley NM, Varma S, Mehl LC, Benson JA, Shrager JB, Bertozzi CR, Pitteri S, Giaccia AJ, Plevritis SK. Multiomics Analysis of Spatially Distinct Stromal Cells Reveals Tumor-Induced O-Glycosylation of the CDK4-pRB Axis in Fibroblasts at the Invasive Tumor Edge. Cancer Res 2022; 82:648-664. [PMID: 34853070 PMCID: PMC9075699 DOI: 10.1158/0008-5472.can-21-1705] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/02/2021] [Accepted: 11/24/2021] [Indexed: 11/16/2022]
Abstract
The invasive leading edge represents a potential gateway for tumor metastasis. The role of fibroblasts from the tumor edge in promoting cancer invasion and metastasis has not been comprehensively elucidated. We hypothesize that cross-talk between tumor and stromal cells within the tumor microenvironment results in activation of key biological pathways depending on their position in the tumor (edge vs. core). Here we highlight phenotypic differences between tumor-adjacent-fibroblasts (TAF) from the invasive edge and tumor core fibroblasts from the tumor core, established from human lung adenocarcinomas. A multiomics approach that includes genomics, proteomics, and O-glycoproteomics was used to characterize cross-talk between TAFs and cancer cells. These analyses showed that O-glycosylation, an essential posttranslational modification resulting from sugar metabolism, alters key biological pathways including the cyclin-dependent kinase 4 (CDK4) and phosphorylated retinoblastoma protein axis in the stroma and indirectly modulates proinvasive features of cancer cells. In summary, the O-glycoproteome represents a new consideration for important biological processes involved in tumor-stroma cross-talk and a potential avenue to improve the anticancer efficacy of CDK4 inhibitors. SIGNIFICANCE A multiomics analysis of spatially distinct fibroblasts establishes the importance of the stromal O-glycoproteome in tumor-stroma interactions at the leading edge and provides potential strategies to improve cancer treatment. See related commentary by De Wever, p. 537.
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Affiliation(s)
- Gina Bouchard
- Department of Biomedical Data Science, Stanford University, Stanford, CA 94305, USA
- Department of Radiology, Canary Center for Cancer Early Detection, Palo Alto CA, 94304, USA
- Department of Radiation Oncology, Stanford, CA 94305, USA
| | | | | | - Weiruo Zhang
- Department of Biomedical Data Science, Stanford University, Stanford, CA 94305, USA
| | - Abel Bermudez
- Department of Radiology, Canary Center for Cancer Early Detection, Palo Alto CA, 94304, USA
| | | | - Sushama Varma
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | | | - Jalen Anthony Benson
- Department of Cardiothoracic Surgery, Stanford University, Stanford, CA 94305, USA
| | - Joseph B Shrager
- Department of Cardiothoracic Surgery, Stanford University, Stanford, CA 94305, USA
| | | | - Sharon Pitteri
- Department of Radiology, Canary Center for Cancer Early Detection, Palo Alto CA, 94304, USA
| | - Amato J Giaccia
- Department of Radiation Oncology, Stanford, CA 94305, USA
- Department of Oncology, University of Oxford, Oxford OX3 7DQ, UK
| | - Sylvia Katina Plevritis
- Department of Biomedical Data Science, Stanford University, Stanford, CA 94305, USA
- Department of Radiology, Canary Center for Cancer Early Detection, Palo Alto CA, 94304, USA
- Corresponding author; Sylvia K. Plevritis, James H. Clark Center, Stanford University, 318 Campus Drive, Room S255, Stanford, CA 94305. Phone: 650- 498-5261; Fax: 650-498-5261;
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Ramos A, Sadeghi S, Tabatabaeian H. Battling Chemoresistance in Cancer: Root Causes and Strategies to Uproot Them. Int J Mol Sci 2021; 22:9451. [PMID: 34502361 PMCID: PMC8430957 DOI: 10.3390/ijms22179451] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/28/2021] [Accepted: 08/30/2021] [Indexed: 02/07/2023] Open
Abstract
With nearly 10 million deaths, cancer is the leading cause of mortality worldwide. Along with major key parameters that control cancer treatment management, such as diagnosis, resistance to the classical and new chemotherapeutic reagents continues to be a significant problem. Intrinsic or acquired chemoresistance leads to cancer recurrence in many cases that eventually causes failure in the successful treatment and death of cancer patients. Various determinants, including tumor heterogeneity and tumor microenvironment, could cause chemoresistance through a diverse range of mechanisms. In this review, we summarize the key determinants and the underlying mechanisms by which chemoresistance appears. We then describe which strategies have been implemented and studied to combat such a lethal phenomenon in the management of cancer treatment, with emphasis on the need to improve the early diagnosis of cancer complemented by combination therapy.
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Affiliation(s)
- Alisha Ramos
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117545, Singapore;
| | - Samira Sadeghi
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore;
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), Singapore 138672, Singapore
| | - Hossein Tabatabaeian
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, Singapore
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Rezinciuc S, Bezavada L, Bahadoran A, Duan S, Wang R, Lopez-Ferrer D, Finkelstein D, McGargill MA, Green DR, Pasa-Tolic L, Smallwood HS. Dynamic metabolic reprogramming in dendritic cells: An early response to influenza infection that is essential for effector function. PLoS Pathog 2020; 16:e1008957. [PMID: 33104753 PMCID: PMC7707590 DOI: 10.1371/journal.ppat.1008957] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/01/2020] [Accepted: 09/03/2020] [Indexed: 01/19/2023] Open
Abstract
Infection with the influenza virus triggers an innate immune response that initiates the adaptive response to halt viral replication and spread. However, the metabolic response fueling the molecular mechanisms underlying changes in innate immune cell homeostasis remain undefined. Although influenza increases parasitized cell metabolism, it does not productively replicate in dendritic cells. To dissect these mechanisms, we compared the metabolism of dendritic cells to that of those infected with active and inactive influenza A virus and those treated with toll-like receptor agonists. Using quantitative mass spectrometry, pulse chase substrate utilization assays and metabolic flux measurements, we found global metabolic changes in dendritic cells 17 hours post infection, including significant changes in carbon commitment via glycolysis and glutaminolysis, as well as mitochondrial respiration. Influenza infection of dendritic cells led to a metabolic phenotype distinct from that induced by TLR agonists, with significant resilience in terms of metabolic plasticity. We identified c-Myc as one transcription factor modulating this response. Restriction of c-Myc activity or mitochondrial substrates significantly changed the immune functions of dendritic cells, such as reducing motility and T cell activation. Transcriptome analysis of inflammatory dendritic cells isolated following influenza infection showed similar metabolic reprogramming occurs in vivo. Thus, early in the infection process, dendritic cells respond with global metabolic restructuring, that is present in inflammatory lung dendritic cells after infection, and this is important for effector function. These findings suggest metabolic switching in dendritic cells plays a vital role in initiating the immune response to influenza infection. Dendritic cells are critical in mounting an effective immune response to influenza infection by initiating the immune response to influenza and activating the adaptive response to mediate viral clearance and manifest immune memory for protection against subsequent infections. We found dendritic cells undergo a profound metabolic shift after infection. They alter the concentration and location of hundreds of proteins, including c-Myc, facilitating a shift to a highly glycolytic phenotype that is also flexible in terms of fueling respiration. Nonetheless, we found limiting access to specific metabolic pathways or substrates diminished key immune functions. We previously described an immediate, fixed hypermetabolic state in infected respiratory epithelial cells. Here we present data indicating the metabolic response of dendritic cells is increased yet flexible, distinct from what we previously showed for epithelial cells. Additionally, we demonstrate dendritic cells tailor their metabolic response to the pathogen or TLR stimulus. This metabolic reprogramming occurs rapidly in vitro and is sustained in inflammatory dendritic cells in vivo for at least 9 days following influenza infection. These studies introduce the possibility of modulating the immune response to viral infection using customized metabolic therapy to enhance or diminish the function of specific cells.
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Affiliation(s)
- Svetlana Rezinciuc
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, Tennessee, United States of America
| | - Lavanya Bezavada
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, Tennessee, United States of America
| | - Azadeh Bahadoran
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, Tennessee, United States of America
| | - Susu Duan
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, Tennessee, United States of America
| | - Ruoning Wang
- Center for Childhood Cancer and Blood Disease, The Research Institute at Nationwide Children's Hospital, The Ohio State University School of Medicine, Columbus, Ohio, United States of America
| | - Daniel Lopez-Ferrer
- Chromatography and Mass Spectrometry Division, Thermo Fisher Scientific, CA, United States of America
| | - David Finkelstein
- Department of Computational Biology, St. Jude Children’s Research Hospital, Memphis, Tennessee, United States of America
| | - Maureen A. McGargill
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, Tennessee, United States of America
| | - Douglas R. Green
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, Tennessee, United States of America
| | - Ljiljana Pasa-Tolic
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington, United States of America
| | - Heather S. Smallwood
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, Tennessee, United States of America
- * E-mail:
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Lin X, Xiao Z, Chen T, Liang SH, Guo H. Glucose Metabolism on Tumor Plasticity, Diagnosis, and Treatment. Front Oncol 2020; 10:317. [PMID: 32211335 PMCID: PMC7069415 DOI: 10.3389/fonc.2020.00317] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 02/21/2020] [Indexed: 12/22/2022] Open
Abstract
Malignant cells support tumor proliferation and progression by adopting to metabolic changes. Tumor cells altered metabolism by increasing glucose uptake and fermentation of glucose to lactate, even in the aerobic state and the presence of functioning mitochondria. Glucose metabolism in tumor plasticity has attracted great interests by clinicians and scientists in the past decades. This review discusses the previous and emerging researches on the tumor plasticity altered by changing glucose metabolism in different cancer cells, including cancer stem cells (CSCs). In addition, we summarize the rising applications of glucose metabolism in tumor diagnosis and treatment. Our objective is to direct future investigation on this altered metabolic phenotype and its application in patient care.
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Affiliation(s)
- Xiaoping Lin
- Department of Nuclear Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.,State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.,Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Harvard Medical School, Massachusetts General Hospital, Boston, MA, United States
| | - Zizheng Xiao
- Department of Nuclear Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.,State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Tao Chen
- Department of Nuclear Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.,State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Steven H Liang
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Harvard Medical School, Massachusetts General Hospital, Boston, MA, United States
| | - Huiqin Guo
- Department of Thoracic Surgery, Beijing Sijitan Hospital, Capital Medical University, Beijing, China
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Lin J, Xia L, Liang J, Han Y, Wang H, Oyang L, Tan S, Tian Y, Rao S, Chen X, Tang Y, Su M, Luo X, Wang Y, Wang H, Zhou Y, Liao Q. The roles of glucose metabolic reprogramming in chemo- and radio-resistance. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2019; 38:218. [PMID: 31122265 PMCID: PMC6533757 DOI: 10.1186/s13046-019-1214-z] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 05/07/2019] [Indexed: 12/15/2022]
Abstract
Reprogramming of cancer metabolism is a newly recognized hallmark of malignancy. The aberrant glucose metabolism is associated with dramatically increased bioenergetics, biosynthetic, and redox demands, which is vital to maintain rapid cell proliferation, tumor progression, and resistance to chemotherapy and radiation. When the glucose metabolism of cancer is rewiring, the characters of cancer will also occur corresponding changes to regulate the chemo- and radio-resistance of cancer. The procedure is involved in the alteration of many activities, such as the aberrant DNA repairing, enhanced autophagy, oxygen-deficient environment, and increasing exosomes secretions, etc. Targeting altered metabolic pathways related with the glucose metabolism has become a promising anti-cancer strategy. This review summarizes recent progress in our understanding of glucose metabolism in chemo- and radio-resistance malignancy, and highlights potential molecular targets and their inhibitors for cancer treatment.
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Affiliation(s)
- Jinguan Lin
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Longzheng Xia
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Jiaxin Liang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Yaqian Han
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Heran Wang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Linda Oyang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Shiming Tan
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Yutong Tian
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Shan Rao
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Xiaoyan Chen
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Yanyan Tang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Min Su
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Xia Luo
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Ying Wang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Hui Wang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China
| | - Yujuan Zhou
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China.
| | - Qianjin Liao
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Key Laboratory of Translational Radiation Oncology, Hunan Province, 283 Tongzipo Road, Changsha, 410013, Hunan, China.
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