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Zhang H, Li X, Liu Z, Lin Z, Huang K, Wang Y, Chen Y, Liao L, Wu L, Xie Z, Hou J, Zhang X, Liu H. Elevated expression of HIGD1A drives hepatocellular carcinoma progression by regulating polyamine metabolism through c-Myc-ODC1 nexus. Cancer Metab 2024; 12:7. [PMID: 38395945 PMCID: PMC10893642 DOI: 10.1186/s40170-024-00334-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 02/14/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Hypoxia contributes to cancer progression through various molecular mechanisms and hepatocellular carcinoma (HCC) is one of the most hypoxic malignancies. Hypoxia-inducible gene domain protein-1a (HIGD1A) is typically induced via epigenetic regulation and promotes tumor cell survival during hypoxia. However, the role of HIGD1A in HCC remains unknown. METHODS HIGD1A expression was determined in 24 pairs of human HCC samples and para-tumorous tissues. Loss-of-function experiments were conducted both in vivo and in vitro to explore the role of HIGD1A in HCC proliferation and metastasis. RESULTS Increased HIGD1A expression was found in HCC tissues and cell lines, which was induced by hypoxia or low-glucose condition. Moreover, HIGD1A knockdown in HCC cells arrested the cell cycle at the G2/M phase and promoted hypoxia-induced cell apoptosis, resulting in great inhibition of cell proliferation, migration, and invasion, as well as tumor xenograft formation. Interestingly, these anti-tumor effects were not observed in normal hepatocyte cell line L02. Further, HIGD1A knockdown suppressed the expression of ornithine decarboxylase 1 (ODC1), a rate-limiting enzyme of polyamine metabolism under c-Myc regulation. HIGD1A was found to bind with the c-Myc promoter region, and its knockdown decreased the levels of polyamine metabolites. Consistently, the inhibitory effect on HCC phenotype by HIGD1A silencing could be reversed by overexpression of c-Myc or supplementation of polyamines. CONCLUSIONS Our results demonstrated that HIGD1A activated c-Myc-ODC1 nexus to regulate polyamine synthesis and to promote HCC survival and malignant phenotype, implying that HIGD1A might represent a novel therapeutic target for HCC.
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Affiliation(s)
- Haixing Zhang
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaoran Li
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ziying Liu
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zimo Lin
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Kuiyuan Huang
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yiran Wang
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yu Chen
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Leyi Liao
- Division of Hepatobiliopancreatic Surgery, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Leyuan Wu
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhanglian Xie
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jinlin Hou
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China.
| | - Xiaoyong Zhang
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China.
| | - Hongyan Liu
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China.
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Li L, Zhao J, Zhang H, Li D, Wu S, Xu W, Pan X, Hu W, Chu J, Luo W, Li P, Zhou X. HIGD1A inactivated by DNA hypermethylation promotes invasion of kidney renal clear cell carcinoma. Pathol Res Pract 2023; 245:154463. [PMID: 37086631 DOI: 10.1016/j.prp.2023.154463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 02/18/2023] [Accepted: 04/10/2023] [Indexed: 04/24/2023]
Abstract
Hypoxia contributes to the tumorigenesis and metastasis of the tumor. However, the detailed mechanisms underlying hypoxia and kidney renal clear cell carcinoma (KIRC) development and progression remain unclear. Here, we investigated the role of the system HIG1 hypoxia inducible domain family member 1 A (HIGD1A) in the proliferation and metastasis of KIRC and elucidated the underlying molecular mechanisms. The expression of HIGD1A is significantly downregulated in KIRC due to promoter hypermethylation. HIGD1A could serve as a valuable diagnostic biomarker in KIRC. In addition, ectopic overexpression of HIGD1A significantly suppressed the growth and invasive capacity of KIRC cells in vitro under normal glucose conditions. Interestingly, the suppressive efficacy in invasion is much more significant when depleted glucose, but not in proliferation. Furthermore, mRNA expression of HIGD1A positively correlates with CDH1 and EPCAM, while negatively correlated with VIM and SPARC, indicating that HIGD1A impedes invasion of KIRC by regulating epithelial-mesenchymal transition (EMT). Our data suggest that HIGD1A is a potential diagnostic biomarker and tumor suppressor in KIRC.
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Affiliation(s)
- Limei Li
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China; Department of Pathology, College & Hospital of Stomatology Guangxi Medical University, Nanning, China
| | - Jun Zhao
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China; Department of Pathology, College & Hospital of Stomatology Guangxi Medical University, Nanning, China
| | - Haishan Zhang
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China; Department of Pathology, College & Hospital of Stomatology Guangxi Medical University, Nanning, China
| | - Danping Li
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China; Department of Pathology, College & Hospital of Stomatology Guangxi Medical University, Nanning, China
| | - Shu Wu
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China; Department of Pathology, College & Hospital of Stomatology Guangxi Medical University, Nanning, China
| | - Wenqing Xu
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China
| | - Xinli Pan
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Sciences, Nanning, China
| | - Wenjin Hu
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Sciences, Nanning, China
| | - Jiemei Chu
- Life Science Institute, Guangxi Medical University, Nanning, China
| | - Wenqi Luo
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China
| | - Ping Li
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China; Department of Pathology, College & Hospital of Stomatology Guangxi Medical University, Nanning, China.
| | - Xiaoying Zhou
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China; Life Science Institute, Guangxi Medical University, Nanning, China.
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Zhang Y, Wang R, Liu R, Xie S, Jiao F, Li Y, Xin J, Zhang H, Wang Z, Yan Y. Delivery of miR-3529-3p using MnO 2 -SiO 2 -APTES nanoparticles combined with phototherapy suppresses lung adenocarcinoma progression by targeting HIGD1A. Thorac Cancer 2023; 14:913-928. [PMID: 36808485 PMCID: PMC10067359 DOI: 10.1111/1759-7714.14823] [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: 12/25/2022] [Revised: 02/04/2023] [Accepted: 02/06/2023] [Indexed: 02/22/2023] Open
Abstract
BACKGROUND The present study aimed to investigate the function of miR-3529-3p in lung adenocarcinoma and MnO2 -SiO2 -APTES (MSA) as a promising multifunctional delivery agent for lung adenocarcinoma therapy. METHODS Expression levels of miR-3529-3p were evaluated in lung carcinoma cells and tissues by qRT-PCR. The effects of miR-3529-3p on apoptosis, proliferation, metastasis and neovascularization were assessed by CCK-8, FACS, transwell and wound healing assays, tube formation and xenografts experiments. Luciferase reporter assays, western blot, qRT-PCR and mitochondrial complex assay were used to determine the targeting relationship between miR-3529-3p and hypoxia-inducible gene domain family member 1A (HIGD1A). MSA was fabricated using MnO2 nanoflowers, and its heating curves, temperature curves, IC50, and delivery efficiency were examined. The hypoxia and reactive oxygen species (ROS) production was investigated by nitro reductase probing, DCFH-DA staining and FACS. RESULTS MiR-3529-3p expression was reduced in lung carcinoma tissues and cells. Transfection of miR-3529-3p could promote apoptosis and suppress cell proliferation, migration and angiogenesis. As a target of miR-3529-3p, HIGD1A expression was downregulated, through which miR-3529-3p could disrupt the activities of complexes III and IV of the respiratory chain. The multifunctional nanoparticle MSA could not only efficiently deliver miR-3529-3p into cells, but also enhance the antitumor function of miR-3529-3p. The underlying mechanism may be that MSA alleviates hypoxia and has synergistic effects in cellular ROS promotion with miR-3529-3p. CONCLUSIONS Our results establish the antioncogenic role of miR-3529-3p, and demonstrate that miR-3529-3p delivered by MSA has enhanced tumor suppressive effects, probably through elevating ROS production and thermogenesis.
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Affiliation(s)
- Ying Zhang
- Department of Biochemistry and Molecular BiologyBinzhou Medical UniversityYantaiP. R. China
- Oncology DepartmentBinzhou Medical University HospitalBinzhouP. R. China
| | - Ran‐Ran Wang
- Department of Biochemistry and Molecular BiologyBinzhou Medical UniversityYantaiP. R. China
| | - Rui Liu
- Department of Biochemistry and Molecular BiologyBinzhou Medical UniversityYantaiP. R. China
| | - Shu‐Yang Xie
- Department of Biochemistry and Molecular BiologyBinzhou Medical UniversityYantaiP. R. China
| | - Fei Jiao
- Department of Biochemistry and Molecular BiologyBinzhou Medical UniversityYantaiP. R. China
| | - You‐Jie Li
- Department of Biochemistry and Molecular BiologyBinzhou Medical UniversityYantaiP. R. China
| | - Jiaxuan Xin
- Department of Biochemistry and Molecular BiologyBinzhou Medical UniversityYantaiP. R. China
| | - Han Zhang
- Department of Biochemistry and Molecular BiologyBinzhou Medical UniversityYantaiP. R. China
| | - Zhenbo Wang
- Oncology DepartmentBinzhou Medical University HospitalBinzhouP. R. China
| | - Yun‐Fei Yan
- Department of Biochemistry and Molecular BiologyBinzhou Medical UniversityYantaiP. R. China
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Jia YZ, Liu J, Wang GQ, Pan H, Huang TZ, Liu R, Zhang Y. HIG1 domain family member 1A is a crucial regulator of disorders associated with hypoxia. Mitochondrion 2023; 69:171-182. [PMID: 36804467 DOI: 10.1016/j.mito.2023.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 02/06/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023]
Abstract
Mitochondria play a central role in cellular energy conversion, metabolism, and cell proliferation. The regulation of mitochondrial function by HIGD1A, which is located on the inner membrane of the mitochondria, is essential to maintain cell survival under hypoxic conditions. In recent years, there have been shown other cellular pathways and mechanisms involving HIGD1A diametrically or through its interaction. As a novel regulator, HIGD1A maintains mitochondrial integrity and enhances cell viability under hypoxic conditions, increasing cell resistance to hypoxia. HIGD1A mainly targets cytochrome c oxidase by regulating downstream signaling pathways, which affects the ATP generation system and subsequently alters mitochondrial respiratory function. In addition, HIGD1A plays a dual role in cell survival in distinct degree hypoxia regions of the tumor. Under mild and moderate anoxic areas, HIGD1A acts as a positive regulator to promote cell growth. However, HIGD1A plays a role in inhibiting cell growth but retaining cellular activity under severe anoxic areas. We speculate that HIGD1A engages in tumor recurrence and drug resistance mechanisms. This review will focus on data concerning how HIGD1A regulates cell viability under hypoxic conditions. Therefore, HIGD1A could be a potential therapeutic target for hypoxia-related diseases.
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Affiliation(s)
- Yin-Zhao Jia
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jing Liu
- Key Laboratory of Coal Science and Technology of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
| | - Geng-Qiao Wang
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Hao Pan
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Tie-Zeng Huang
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Ran Liu
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yong Zhang
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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Guo J, Yu J, Mu M, Chen Z, Xu Z, Zhao C, Yang K, Zheng J, Qin X, Zhao W, Sun X. DFNA5 inhibits colorectal cancer proliferation by suppressing the mTORC1/2 signaling pathways via upregulation of DEPTOR. Cell Cycle 2022; 21:2165-2178. [PMID: 35923131 PMCID: PMC9518992 DOI: 10.1080/15384101.2022.2088570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The human deafness, autosomal dominant 5 gene (DFNA5), a newly discovered executor of pyroptosis, has been strongly implicated in the tumorigenesis of several human cancers. However, an understanding of the functional role of DFNA5 in the development and progression of colorectal cancer (CRC) is limited. In this study, we demonstrated that DFNA5 was downregulated in CRC tissues. Ectopic expression of DFNA5 inhibited tumor cell growth in vitro, retarded tumor formation in vivo, and blocked a cell-cycle transition from the G0/G1 to the S phase, whereas a DFNA5 knockdown promoted cell proliferation. Western blotting showed that the levels of cell cycle-related proteins, including cyclin D1, cyclin E, CDK2, and p21, were accordingly altered upon DFNA5 overexpression or DFNA5 knockdown. Mechanistic studies indicated that DFNA5 exerted its tumor suppressor functions by antagonizing mTORC1/2 signaling via upregulation of DEPTOR. In addition, blockage of mTORC1/2 signaling by Torin-1 abolished the accelerative proliferation by DFNA5 knockdown. In conclusion, these results indicated that DFNA5 inhibits the proliferation and tumor formation of colon cancer cells by suppressing mTORC1/2 signaling.
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Affiliation(s)
- Jing Guo
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Junhui Yu
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Mingchao Mu
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Zilu Chen
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Zhengshui Xu
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Chenye Zhao
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Kui Yang
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Jianbao Zheng
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Xiao Qin
- Department of Emergency, Ankang People's Hospital, Ankang, Shaanxi, China
| | - Wei Zhao
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Xuejun Sun
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
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Abstract
Higd1a is a conserved gene in evolution which is widely expressed in many tissues in mammals. Accumulating evidence has revealed multiple functions of Higd1a, as a mitochondrial inner membrane protein, in the regulation of metabolic homeostasis. It plays an important role in anti-apoptosis and promotes cellular survival in several cell types under hypoxic condition. And the survival of porcine Sertoli cells facilitated by Higd1a helps to support reproduction. In some cases, Higd1a can serve as a sign of metabolic stress. Over the past several years, a considerable amount of studies about how tumor fate is determined and how cancerous proliferation is regulated by Higd1a have been performed. In this review, we summarize the physiological functions of Higd1a in metabolic homeostasis and its pathophysiological roles in distinct diseases including cancer, nonalcoholic fatty liver disease (NAFLD), type II diabetes and mitochondrial diseases. The prospect of Higd1a with potential to preserve mammal health is also discussed. This review might pave the way for Higd1a-based research and application in clinical practice.
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Xu Z, Sun J, Chen Y, Zhang T, Qin Y, Hua D. HIG1 domain family member 1A disrupts proliferation, migration and invasion of colon adenocarcinoma cells. Bioengineered 2021; 12:10501-10511. [PMID: 34787061 PMCID: PMC8809935 DOI: 10.1080/21655979.2021.1999368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
HIG1 domain family member 1A (Higd-1a) interacts with dynamin-like 120 kDa protein to maintain the morphological and functional integrity of the mitochondria and thus plays an important role in the progression of malignant tumors. Higd-1a promotes the proliferation of pancreatic cancer cells and the growth of pancreatic cancer; however, no similar observations have been reported for colorectal cancer (CRC). This study, therefore, aimed to verify the role of Higd-1a in CRC. We downloaded data from the Genotype-Tissue Expression (GTEX) and The Cancer Genome Atlas (TCGA) databases and identified an association between Higd-1a levels in colon adenocarcinoma (COAD) tissues and poor survival using Kaplan-Meier curves. Subsequently, we overexpressed Higd-1a in the human COAD cell line HCT-8, knocked down Higd-1a expression in SW480 cells, and evaluated the effects via quantitative PCR (qPCR) and western blotting. MTT assays, colony formation assay, cell cycle analysis, annexin V-FITC/PI, wound-healing analysis, and transwell assay were used to test cell proliferation, formation of cell colonies, cell cycle progression, migration, invasiveness, and apoptosis. Higd-1a has low transcription levels in COAD tissue and suggests a poor prognosis. Higd-1a overexpression in HCT-8 cells weakened cell proliferation, formation of cell colonies, cell cycle progression, migration ability, and invasiveness, and increased apoptosis. Moreover, the decrease of Higd-1a in SW480 cells induced cell proliferation, formation of cell colonies, cell cycle progression, migration, and invasion, and inhibited apoptosis. Higd-1a is underexpressed in COAD cells and its overexpression impaired the proliferation, migration, and invasiveness of COAD cells.
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Affiliation(s)
- Zhenyu Xu
- Department of Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, Jiangsu, China.,Department of Oncology, The Affiliated Hospital of Jiangnan University, Wuxi, 214000, Jiangsu, China
| | - Junjie Sun
- Department of Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, Jiangsu, China.,Department of Oncology, The Affiliated Hospital of Jiangnan University, Wuxi, 214000, Jiangsu, China
| | - Yang Chen
- Department of pharmacy, The Affiliated Hospital of Jiangnan University, Wuxi, 214000, Jiangsu, China
| | - Ting Zhang
- Department of Oncology, The Affiliated Hospital of Jiangnan University, Wuxi, 214000, Jiangsu, China
| | - Yan Qin
- Department of pathology, The Affiliated Hospital of Jiangnan University, Wuxi, 214000, Jiangsu, China
| | - Dong Hua
- Department of Oncology, The Affiliated Hospital of Jiangnan University, Wuxi, 214000, Jiangsu, China
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Pang Y, Zhu Z, Wen Z, Lu J, Lin H, Tang M, Xu Z, Lu J. HIGD‑1B inhibits hypoxia‑induced mitochondrial fragmentation by regulating OPA1 cleavage in cardiomyocytes. Mol Med Rep 2021; 24:549. [PMID: 34080026 PMCID: PMC8185509 DOI: 10.3892/mmr.2021.12188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 03/09/2021] [Indexed: 12/19/2022] Open
Abstract
The dynamic regulation of mitochondrial morphology is key for eukaryotic cells to manage physiological challenges. Therefore, it is important to understand the molecular basis of mitochondrial dynamic regulation. The aim of the present study was to explore the role of HIG1 hypoxia inducible domain family member 1B (HIGD‑1B) in hypoxia‑induced mitochondrial fragmentation. Protein expression was determined via western blotting. Immunofluorescence assays were performed to detect the subcellular location of HIGD‑1B. Cell Counting Kit‑8 assays and flow cytometry were carried out to measure cell viability and apoptosis, respectively. Protein interactions were evaluated by co‑immunoprecipitation. In the present study, it was found that HIGD‑1B serves a role in cell survival by maintaining the integrity of the mitochondria under hypoxic conditions. Knockdown of HIGD‑1B promoted mitochondrial fragmentation, while overexpression of HIGD‑1B increased survival by preventing activation of caspase‑3 and ‑9. HIGD‑1B expression was associated with cell viability and apoptosis in cardiomyocytes. Furthermore, HIGD‑1B delayed the cleavage process of optic atrophy 1 (OPA1) and stabilized mitochondrial morphology by interacting with OPA1. Collectively, the results from the present study identified a role for HIGD‑1B as an inhibitor of the mitochondrial fission in cardiomyocytes.
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Affiliation(s)
- Yan Pang
- Department of Cardiology, The First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, P.R. China
| | - Zhide Zhu
- Academic Affairs Section, Guangxi University of Chinese Medicine, Nanning, Guangxi 530000, P.R. China
| | - Zhihao Wen
- Department of Cardiology, The First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, P.R. China
| | - Junshen Lu
- Academic Affairs Section, Guangxi University of Traditional Chinese Medicine Attached Chinese Medicine School, Nanning, Guangxi 530001, P.R. China
| | - Hao Lin
- Department of Geriatrics, Danzhou Traditional Chinese Medicine Hospital, Danzhou, Hainan 571700, P.R. China
| | - Meiling Tang
- Department of Cardiology, The First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, P.R. China
| | - Zhiliang Xu
- Academic Affairs Section, Guangxi University of Chinese Medicine, Nanning, Guangxi 530000, P.R. China
| | - Jianqi Lu
- Department of Cardiology, The First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, P.R. China
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Qin Y, Mi W, Huang C, Li J, Zhang Y, Fu Y. Downregulation of miR-575 Inhibits the Tumorigenesis of Gallbladder Cancer via Targeting p27 Kip1. Onco Targets Ther 2020; 13:3667-3676. [PMID: 32431517 PMCID: PMC7200254 DOI: 10.2147/ott.s229614] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 02/18/2020] [Indexed: 12/11/2022] Open
Abstract
Background Gallbladder cancer (GBC) is the most common biliary tract malignant cancer worldwide. It has been reported that microRNA-575 (miR-575) was involved in the tumorigenesis of many cancers. However, the role of miR-575 during the progression of GBC remains largely unknown. Methods The expression of miR-575 in GBC cells was detected by quantitative real-time polymerase chain reaction. The proliferation of GBC cells was examined by CCK-8 assay and Ki-67 staining. Apoptosis of GBC cells was measured by flow cytometry, and cell invasion was tested by transwell assay. Moreover, protein expressions in GBC cells were evaluated using Western blot. The target gene of miR-575 was predicted using Targetscan and miRDB. Finally, xenograft tumor model was established to verify the function of miR-575 in GBC in vivo. Results Our findings indicated that miR-575 antagonist decreased the proliferation and invasion of GBC cells. In addition, miR-575 antagonist significantly induced apoptosis of GBC cells via inducing G1 arrest. Meanwhile, p27 Kip1 was found to be a direct target of miR-575 with luciferase reporter assay. Moreover, miR-575 antagonist significantly decreased the expressions of CDK1 and cyclin E1 and upregulated the levels of cleaved caspase3 and p27 Kip1 in GBC cells. Finally, miR-575 antagonist notably suppressed GBC tumor growth in vivo. Conclusion Downregulation of miR-575 significantly inhibited the tumorigenesis of GBC via targeting p27 Kip1. Thus, miR-575 might be a potential novel target for the treatment of GBC.
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Affiliation(s)
- Yiyu Qin
- Clinical Medical College, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu 224005, People's Republic of China
| | - Wunan Mi
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, People's Republic of China
| | - Cheng Huang
- Clinical Medical College, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu 224005, People's Republic of China
| | - Jian Li
- Clinical Medical College, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu 224005, People's Republic of China
| | - Yizheng Zhang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, People's Republic of China
| | - Yang Fu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, People's Republic of China
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