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Niu X, Zhao K, Zheng Y, Wang Y, Liu R, Zhang Y, Wang L, Wu Y, Bai X, Qiao B. ANXA13 promotes cell proliferation and invasion and attenuates apoptosis in renal cell carcinoma. Heliyon 2023; 9:e18009. [PMID: 37520951 PMCID: PMC10374933 DOI: 10.1016/j.heliyon.2023.e18009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 06/20/2023] [Accepted: 07/05/2023] [Indexed: 08/01/2023] Open
Abstract
Purpose Emerging evidences have demonstrated that annexin A13 (ANXA13) is closely related to the occurrence and development of malignant tumors. However, the functions and underlying molecular mechanisms of ANXA13 in Clear cell renal cell carcinoma (ccRCC) have not been defined. Therefore, this study aimed to clarify the potential role of ANXA13 in regulating the proliferation, migration, invasion, cell cycle, and apoptosis of ccRCC cells. Patients and methods The quantitative real-time PCR (qRT-PCR) and western blotting was performed for detecting the ANXA13 expression in ccRCC tissues at the mRNA and protein levels, respectively. The GEPIA2 databases were used to derive data for analyzing the ANXA13 expression in pan-cancer and ccRCC clinical features. Cell Counting and colony formation assays, as well as flow cytometry, were used to detect cell proliferation, apoptosis, or cell cycle. The wound healing assay was used to evaluate the migration ability of cells, and the Trans-well assay was conducted to determine the cell invasiveness. Results ANXA13 was upregulated in ccRCC cells and human ccRCC tissues. Furthermore, siANXA13 inhibited ccRCC cell proliferation, migration, invasion and induced cell apoptosis. Conclusion ANXA13 was upregulated in ccRCC. ANXA13 promotes tumorigenic traits of ccRCC cell lines in vitro. ANXA13 is a potential novel biomarker and a potential therapeutic target in ccRCC.
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Affiliation(s)
- Xiaoyu Niu
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Keyuan Zhao
- Department of Urology, Shaoxing People's Hospital, Shaoxing, Zhejiang, 312000, China
| | - Yuanyuan Zheng
- National Engineering Laboratory for Internet Medical Systems and Applications, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Yapeng Wang
- Department of Urology, Daping Hospital, Army Medical University, Chongqing, 404100, China
| | - Ruoyang Liu
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Yiming Zhang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Lihui Wang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Yongjun Wu
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, China
- The Key Laboratory of Nanomedicine and Health Inspection of Zhengzhou, Zhengzhou, Henan, 450001, China
| | - Xuefeng Bai
- The Key Laboratory of Nanomedicine and Health Inspection of Zhengzhou, Zhengzhou, Henan, 450001, China
| | - Baoping Qiao
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
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Gao X, Xu M, Wang H, Xia Z, Sun H, Liu M, Zhao S, Yang F, Niu Z, Gao H, Zhu H, Lu J, Zhou X. Development and validation of a mitochondrial energy metabolism-related risk model in hepatocellular carcinoma. Gene 2023; 855:147133. [PMID: 36565797 DOI: 10.1016/j.gene.2022.147133] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 12/01/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is one of the most prevalent cancers and ranks third inmortality. Mitochondria are the energy manufacturers of cells. Disruption of mitochondrial energy metabolism pathways is strongly correlated with the onset and progression of HCC. Aberrant genes in mitochondrial energy metabolism pathways may represent a unique diagnostic and therapeutic targets that act as indicators for HCC. METHODS Gene expression data from 374 HCC patients and 50 controls were acquired from TCGA database. A total of 188 mitochondrial energy metabolism-related genes (MMRGs) were obtained from KEGG PATHWAY database. A total of 368 patients with survival data were randomly split into training and validation groups in a 7: 3 ratio. Prognosis-related MMRGs were selected by univariate Cox and LASSO analyses. Kaplan-Meier and ROC curves were employed to analyze the model precision, whereas the validation set was used for model verification. Furthermore, clinical examinations, immune infiltration analysis, GSVA, and immunotherapy analysis were conducted in the high- and low-risk groups. Finally, the risk model was combined with the clinical variables of HCC patients to perform univariate and multivariate Cox regression analyses to obtain independent risk indicators and draw a nomogram. Therefore, we evaluated the accuracy of the predictions using calibration curves. RESULTS A total of 6032 differentially expressed genes (DEGs) were detected in the HCC and control samples. After overlapping DEGs with 188 MMRGs, 42 mitochondrial energy metabolism-related DEGs (DEMMRGs) were identified. A 17 specific genes-based risk score model of HCC was created, which revealed effectiveness in each TCGA training and validation dataset. Moreover, patients categorized by risk scores exhibited distinct immune infiltration status, immunotherapy responsiveness, and functional properties. Finally, univariate and multivariate Cox regression analyses revealed that risk score and stage T were independent predictive variables. Based on the T stage and risk score, a nomogram for estimating the survival of HCC patients was created. The calibration curves demonstrated that the prediction model had a high level of accuracy. CONCLUSIONS Our study constructed a mitochondrial energy metabolism-related risk model, that may be utilized to anticipate HCC prognosis and represent the immunological microenvironment of HCC.
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Affiliation(s)
- Xin Gao
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Shandong University, 250021 Jinan, China
| | - Mingyue Xu
- Department of Endocrinology, Qilu Hospital of Shandong University, 250012 Jinan, China
| | - Heng Wang
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Shandong University, 250021 Jinan, China
| | - Zhaozhi Xia
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021 Jinan, China
| | - Hongrui Sun
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021 Jinan, China
| | - Meng Liu
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021 Jinan, China
| | - Shuchao Zhao
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021 Jinan, China
| | - Faji Yang
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021 Jinan, China
| | - Zheyu Niu
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021 Jinan, China
| | - Hengjun Gao
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Shandong University, 250021 Jinan, China; Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021 Jinan, China
| | - Huaqiang Zhu
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Shandong University, 250021 Jinan, China; Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021 Jinan, China
| | - Jun Lu
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Shandong University, 250021 Jinan, China; Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021 Jinan, China
| | - Xu Zhou
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Shandong University, 250021 Jinan, China; Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021 Jinan, China.
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Hu T, Chen X, Lu S, Zeng H, Guo L, Han Y. Biological Role and Mechanism of Lipid Metabolism Reprogramming Related Gene ECHS1 in Cancer. Technol Cancer Res Treat 2022; 21:15330338221140655. [PMID: 36567598 PMCID: PMC9806408 DOI: 10.1177/15330338221140655] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Cancer is a major threat to human health today. Although the existing anticancer treatments have effectively improved the prognosis of some patients, there are still other patients who cannot benefit from these well-established strategies. Reprogramming of lipid metabolism is one of the typical features of cancers. Recent studies have revealed that key enzymes involved in lipid metabolism may be effective anticancer therapeutic targets, but the development of therapeutic lipid metabolism targets is still insufficient. ECHS1 (enoyl-CoA hydratase, short chain 1) is a key enzyme mediating the hydration process of mitochondrial fatty acid β-oxidation and has been observed to be abnormally expressed in a variety of cancers. Therefore, with ECHS1 and cancer as the main keywords, we searched the relevant studies of ECHS1 in the field of cancer in Pubmed, summarized the research status and functions of ECHS1 in different cancer contexts, and explored its potential regulatory mechanisms, with a view to finding new therapeutic targets for anti-metabolic therapy. By reviewing and summarizing the retrieved literatures, we found that ECHS1 regulates malignant biological behaviors such as cell proliferation, metastasis, apoptosis, autophagy, and drug resistance by remodeling lipid metabolism and regulating intercellular oncogenic signaling pathways. Not only that, ECHS1 exhibits early diagnostic and prognostic value in clear cell renal cell carcinoma, and small-molecule inhibitors that regulate ECHS1 also show therapeutic significance in preclinical studies. Taken together, we propose that ECHS1 has the potential to serve as a therapeutic target of lipid metabolism.
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Affiliation(s)
- Teng Hu
- Department of Oncology, The Affiliated Hospital of Southwest
Medical University, Luzhou, Sichuan, China
| | - Xiaojing Chen
- Department of Oncology, The Affiliated Hospital of Southwest
Medical University, Luzhou, Sichuan, China
| | - Simin Lu
- Department of Oncology, The Affiliated Hospital of Southwest
Medical University, Luzhou, Sichuan, China
| | - Hao Zeng
- Department of Oncology, The Affiliated Hospital of Southwest
Medical University, Luzhou, Sichuan, China
| | - Lu Guo
- Department of Ophthalmology, The Affiliated Hospital of Southwest
Medical University, Luzhou, Sichuan, China
| | - Yunwei Han
- Department of Oncology, The Affiliated Hospital of Southwest
Medical University, Luzhou, Sichuan, China,Yunwei Han, Department of Oncology, The
Affiliated Hospital of Southwest Medical University, Taiping Street, No. 25,
Luzhou, Sichuan Province 646000, China.
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Yang M, Wei L. Impact of NAFLD on the outcome of patients with chronic hepatitis B in Asia. Liver Int 2022; 42:1981-1990. [PMID: 35373500 DOI: 10.1111/liv.15252] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 03/01/2022] [Accepted: 03/18/2022] [Indexed: 01/29/2023]
Abstract
Hepatitis B virus (HBV) infection and nonalcoholic fatty liver disease (NAFLD) are two major causes of chronic liver disease (CLD) that can cause liver cirrhosis and hepatocellular carcinoma (HCC). It is a trend to superimpose NAFLD on chronic HBV infection in Asia. This review presents the epidemiology of concurrent NAFLD in chronic hepatitis B (CHB) patients and focuses on the impact of concurrent NAFLD on the outcome of CHB patients in Asia. Although CHB patients tend to have a lower prevalence and incidence of NAFLD than the general population, concurrent NAFLD among CHB patients is still common and has an upward trend over time. Concurrent NAFLD can promote hepatitis B surface antigen (HBsAg) seroclearance and might inhibit HBV replication but exacerbate liver fibrosis. The impacts of concurrent NAFLD on HCC risk, all-cause mortality and antiviral treatment response in CHB patients remain controversial.
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Affiliation(s)
- Ming Yang
- Hepatopancreatobiliary Center, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Lai Wei
- Hepatopancreatobiliary Center, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
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Hepatitis B virus small envelope protein promotes HCC angiogenesis via ER stress signaling to upregulate VEGFA expression. J Virol 2021; 96:e0197521. [PMID: 34910612 DOI: 10.1128/jvi.01975-21] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is a hypervascular tumor and accumulating evidence has indicated that stimulation of angiogenesis by HBV may contribute to HCC malignancy. The small protein of hepatitis B virus surface antigen (HBsAg), SHBs, is the most abundant HBV viral protein and has a close clinical association with HCC, however, whether SHBs contributes to HCC angiogenesis remains unknown. This study reports that forced expression of SHBs in HCC cells promoted xenograft tumor growth and increased the microvessel density (MVD) within the tumors. Consistently, HBsAg was also positively correlated with MVD count in HCC patients' specimens. The conditioned media from the SHBs-transfected HCC cells increased the capillary tube formation and migration of human umbilical vein endothelial cells (HUVECs). Intriguingly, overexpression of SHBs increased VEGFA expression at both mRNA and protein levels. A higher VEGFA expression level was also observed in the xenograft tumors transplanted with SHBs-expressing HCC cells and in HBsAg-positive HCC tumor tissues as compared to their negative controls. As expected, in the culture supernatants, the secretion of VEGFA was also significantly enhanced from HCC cells expressing SHBs, which promoted HUVECs migration and vessel formation. Furthermore, all the three unfolded protein response (UPR) sensors IRE1α, PERK and ATF6 associated with endoplasmic reticulum (ER) stress were found activated in the SHBs-expressing cells and correlated with VEGFA protein expression and secretion. Taken together, these results suggest an important role of SHBs in HCC angiogenesis and may highlight a potential target for preventive and therapeutic intervention of HBV-related HCC and its malignant progression. IMPORTANCE Chronic hepatitis B virus infection is one of the important risk factors for the development and progression of hepatocellular carcinoma (HCC). HCC is characteristic of hypervascularization even at early phases of the disease due to overexpression of angiogenic factors like vascular endothelial growth factor-A (VEGFA). However, a detailed mechanism in the HBV-induced angiogenesis remains to be established. In this study, we demonstrate for the first time that the most abundant HBV viral protein, i.e. small surface antigens (SHBs) can enhance the angiogenic capacity of HCC cells by upregulation of VEGFA expression both in vitro and in vivo. Mechanistically, SHBs induced endoplasmic reticulum (ER) stress which consequently activated unfolded protein response (UPR) signaling to increase VEGFA expression and secretion. This study suggests that SHBs plays an important pro-angiogenic role in HBV-associated HCC and may represent a potential target for anti-angiogenic therapy in the HCC.
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Li R, Hao Y, Wang Q, Meng Y, Wu K, Liu C, Xu L, Liu Z, Zhao L. ECHS1, an interacting protein of LASP1, induces sphingolipid-metabolism imbalance to promote colorectal cancer progression by regulating ceramide glycosylation. Cell Death Dis 2021; 12:911. [PMID: 34615856 PMCID: PMC8494735 DOI: 10.1038/s41419-021-04213-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 09/14/2021] [Accepted: 09/23/2021] [Indexed: 01/30/2023]
Abstract
Sphingolipid metabolic dysregulation has increasingly been considered to be a drug-resistance mechanism for a variety of tumors. In this study, through an LC-MS assay, LIM and SH3 protein 1 (LASP1) was identified as a sphingolipid-metabolism-involved protein, and short-chain enoyl-CoA hydratase (ECHS1) was identified as a new LASP1-interacting protein through a protein assay in colorectal cancer (CRC). Gain- and loss-of-function analyses demonstrated the stimulatory role played by ECHS1 in CRC cell proliferation, migration, and invasion in vitro and in vivo. Mechanistic studies of the underlying tumor-supportive oncometabolism indicate that ECHS1 enables altering ceramide (Cer) metabolism that increases glycosphingolipid synthesis (HexCer) by promoting UDP-glucose ceramide glycosyltransferase (UGCG). Further analysis showed that ECHS1 promotes CRC progression and drug resistance by releasing reactive oxygen species (ROS) and interfering mitochondrial membrane potential via the PI3K/Akt/mTOR-dependent signaling pathway. Meanwhile, the phenomenon of promoting the survival and drug resistance of CRC cells caused by ECHS1 could be reversed by Eliglustat, a specific inhibitor of UCCG, in vitro and in vivo. IHC assay showed that ECHS1 was overexpressed in CRC tissues, which was related to the differentiation and poor prognosis of CRC patients. This study provides new insight into the mechanism by which phospholipids promote drug resistance in CRC and identifies potential targets for future therapies.
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Affiliation(s)
- Rui Li
- Department of Pathology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan, China
- Department of Pathology & Guangdong Province Key Laboratory of Molecular Tumor Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Yanyu Hao
- Department of Pathology & Guangdong Province Key Laboratory of Molecular Tumor Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Qiuhan Wang
- Department of Pathology & Guangdong Province Key Laboratory of Molecular Tumor Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Yuan Meng
- Department of Pathology, The Second People's Hospital of Longgang District, Shenzhen, China
| | - Kunhe Wu
- Department of Pathology, Guangdong Women and Children Hospital, Guangzhou, Guangdong, 511442, China
| | - Chaoqun Liu
- Department of Pathology & Guangdong Province Key Laboratory of Molecular Tumor Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Lijun Xu
- Department of Pathology & Guangdong Province Key Laboratory of Molecular Tumor Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Ziguang Liu
- Department of Pathology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan, China
| | - Liang Zhao
- Department of Pathology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan, China.
- Department of Pathology & Guangdong Province Key Laboratory of Molecular Tumor Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.
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Yang Y, Zhang Y, Yang C, Fang F, Wang Y, Chang H, Chen Z, Chen P. Differential mitochondrial proteomic analysis of A549 cells infected with avian influenza virus subtypes H5 and H9. Virol J 2021; 18:39. [PMID: 33602268 PMCID: PMC7891018 DOI: 10.1186/s12985-021-01512-4] [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: 08/26/2020] [Accepted: 02/08/2021] [Indexed: 01/14/2023] Open
Abstract
Background Both the highly pathogenic avian influenza (HPAI) H5N1 and low pathogenic avian influenza (LPAI) H9N2 viruses have been reported to cross species barriers to infect humans. H5N1 viruses can cause severe damage and are associated with a high mortality rate, but H9N2 viruses do not cause such outcomes. Our purpose was to use proteomics technology to study the differential expression of mitochondrial-related proteins related to H5N1 and H9N2 virus infections.
Methods According to the determined viral infection titer, A549 cells were infected with 1 multiplicity of infection virus, and the mitochondria were extracted after 24 h of incubation. The protein from lysed mitochondria was analyzed by the BCA method to determine the protein concentration, as well as SDS-PAGE (preliminary analysis), two-dimensional gel electrophoresis, and mass spectrometry. Differential protein spots were selected, and Western blotting was performed to verify the proteomics results. The identified proteins were subjected to GO analysis for subcellular localization, KEGG analysis for functional classification and signaling pathways assessment, and STRING analysis for functional protein association network construction. Results In the 2-D gel electrophoresis analysis, 227 protein spots were detected in the H5N1-infected group, and 169 protein spots were detected in the H9N2-infected group. Protein spots were further subjected to mass spectrometry identification and removal of redundancy, and 32 differentially expressed proteins were identified. Compared with the H9N2 group, the H5N1-infected group had 16 upregulated mitochondrial proteins and 16 downregulated proteins. The differential expression of 70-kDa heat shock protein analogs, short-chain enoyl-CoA hydratase, malate dehydrogenase, and ATP synthase was verified by Western blot, and the results were consistent with the proteomics findings. Functional analysis indicated that these differentially expressed proteins were primarily involved in apoptosis and metabolism. Conclusions Compared with their expression in the H9N2 group, the differential expression of eight mitochondrial proteins in the H5N1 group led to host T cell activation, antigen presentation, stress response, ATP synthesis and cell apoptosis reduction, leading to higher pathogenicity of H5N1 than H9N2. Supplementary Information The online version contains supplementary material available at 10.1186/s12985-021-01512-4.
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Affiliation(s)
- Yuting Yang
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Yun Zhang
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Changcheng Yang
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Fang Fang
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Ying Wang
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Haiyan Chang
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China.
| | - Ze Chen
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China. .,Shanghai Institute of Biological Products, Shanghai, 200052, China.
| | - Ping Chen
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China.
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Hossain MG, Akter S, Ohsaki E, Ueda K. Impact of the Interaction of Hepatitis B Virus with Mitochondria and Associated Proteins. Viruses 2020; 12:v12020175. [PMID: 32033216 PMCID: PMC7077294 DOI: 10.3390/v12020175] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 02/02/2020] [Accepted: 02/03/2020] [Indexed: 02/06/2023] Open
Abstract
Around 350 million people are living with hepatitis B virus (HBV), which can lead to death due to liver cirrhosis and hepatocellular carcinoma (HCC). Various antiviral drugs/nucleot(s)ide analogues are currently used to reduce or arrest the replication of this virus. However, many studies have reported that nucleot(s)ide analogue-resistant HBV is circulating. Cellular signaling pathways could be one of the targets against the viral replication. Several studies reported that viral proteins interacted with mitochondrial proteins and localized in the mitochondria, the powerhouse of the cell. And a recent study showed that mitochondrial turnover induced by thyroid hormones protected hepatocytes from hepatocarcinogenesis mediated by HBV. Strong downregulation of numerous cellular signaling pathways has also been reported to be accompanied by profound mitochondrial alteration, as confirmed by transcriptome profiling of HBV-specific CD8 T cells from chronic and acute HBV patients. In this review, we summarize the ongoing research into mitochondrial proteins and/or signaling involved with HBV proteins, which will continue to provide insight into the relationship between mitochondria and HBV and ultimately lead to advances in viral pathobiology and mitochondria-targeted antiviral therapy.
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Affiliation(s)
- Md. Golzar Hossain
- Division of Virology, Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan;
- Department of Microbiology and Hygiene, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
- Correspondence: (M.G.H.); (K.U.)
| | - Sharmin Akter
- Department of Physiology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh;
| | - Eriko Ohsaki
- Division of Virology, Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan;
| | - Keiji Ueda
- Division of Virology, Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan;
- Correspondence: (M.G.H.); (K.U.)
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Li A, Wu J, Zhai A, Qian J, Wang X, Qaria MA, Zhang Q, Li Y, Fang Y, Kao W, Song W, Zhang Z, Zhang F. HBV triggers APOBEC2 expression through miR‑122 regulation and affects the proliferation of liver cancer cells. Int J Oncol 2019; 55:1137-1148. [PMID: 31485598 DOI: 10.3892/ijo.2019.4870] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 07/15/2019] [Indexed: 11/05/2022] Open
Abstract
Hepatitis B virus (HBV) infection is responsible for 50% of liver cancer cases globally; this disease is one of the leading causes of cancer‑associated mortality. One reported mechanism underlying the development of liver cancer is the mutation of tumor suppressor genes induced by the overexpression of apolipoprotein B mRNA‑editing enzyme catalytic subunit 2 (APOBEC2) in hepatocytes. In addition, it has been observed that HBV inhibited microRNA (miR)‑122 expression in hepatocytes; however, the molecular mechanisms involved in liver cancer development remain unknown and further investigations are required. In the present study, the mechanistic roles of HBV infection in modulating the expression of miR‑122 and APOBEC2, and the development of liver cancer, were investigated. Reverse transcription‑quantitative PCR and western blot analyses revealed that APOBEC2 expression was markedly upregulated following HBV infection. Of note, the expression profile of APOBEC2 in the Huh7 and HepG2 liver cancer cell lines opposed that of miR‑122; this miR is the most abundant miRNA in the liver and has been associated with hepatocarcinogenesis. Mechanistically, it was demonstrated via a dual‑luciferase assay that miR‑122 could specifically bind to the 3'‑untranslated region (3'UTR) of APOBEC2 mRNA, inhibiting its expression. Collectively, the findings of the present study may provide insight into the mechanistic role of HBV infection in modulating the expression of miR‑122, which targets the 3'UTR of APOBEC2 mRNA, subsequently inducing liver carcinogenesis.
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Affiliation(s)
- Aimei Li
- Wu Lien‑Teh Institute, Department of Microbiology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Jing Wu
- Hangzhou Key Laboratory of Inflammation and Immunoregulation, Department of Basic Medical Science, School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang 310000, P.R. China
| | - Aixia Zhai
- Wu Lien‑Teh Institute, Department of Microbiology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Jun Qian
- Wu Lien‑Teh Institute, Department of Microbiology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Xinyang Wang
- Wu Lien‑Teh Institute, Department of Microbiology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Majjid A Qaria
- Wu Lien‑Teh Institute, Department of Microbiology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Qingmeng Zhang
- Wu Lien‑Teh Institute, Department of Microbiology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Yujun Li
- Wu Lien‑Teh Institute, Department of Microbiology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Yong Fang
- Wu Lien‑Teh Institute, Department of Microbiology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Wenping Kao
- Wu Lien‑Teh Institute, Department of Microbiology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Wuqi Song
- Wu Lien‑Teh Institute, Department of Microbiology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Zhiyi Zhang
- Department of Rheumatology, The First Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Fengmin Zhang
- Wu Lien‑Teh Institute, Department of Microbiology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
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Zheng B, Yang Y, Han Q, Yin C, Pan Z, Zhang J. STAT3 directly regulates NKp46 transcription in NK cells of HBeAg-negative CHB patients. J Leukoc Biol 2019; 106:987-996. [PMID: 31132315 DOI: 10.1002/jlb.2a1118-421r] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 03/29/2019] [Accepted: 05/16/2019] [Indexed: 12/14/2022] Open
Abstract
NK cells play an important role in early control of HBV infection. The function of NK cells is inhibited in chronic hepatitis B virus (CHB) infection, although the underlying mechanism remains unknown. We found that the expression of STAT3 decreased in peripheral NK cells of CHB patients, and was associated with low levels of degranulation and IFN-γ secretion. In addition, STAT3 levels were positively correlated with cytolysis-associated molecules and antiviral cytokines, such as CD107a, granzyme B, perforin, and IFN-γ. HBsAg directly inhibited the expression and activation of STAT3 in NK cells, and knocking down STAT3 expression in NK cells inhibited proliferation, decreased cyclin d1 levels, and suppressed responsiveness to IL-21 stimulation. Furthermore, STAT3 directly bound to the promoter of NKp46, an important activating receptor of NK cells, to regulate its transcription and expression. Taken together, our findings indicate that STAT3 is an important positive regulator of NK cells, and provide a new mechanism of NK cell dysfunction in CHB.
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Affiliation(s)
- Bingqing Zheng
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Yinli Yang
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Qiuju Han
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Chunlai Yin
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Zhaoyi Pan
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Jian Zhang
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan, China
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Yang Y, Cong H, Du N, Han X, Song L, Zhang W, Li C, Tien P. Mitochondria Redistribution in Enterovirus A71 Infected Cells and Its Effect on Virus Replication. Virol Sin 2019; 34:397-411. [PMID: 31069716 DOI: 10.1007/s12250-019-00120-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 03/25/2019] [Indexed: 10/26/2022] Open
Abstract
Enterovirus A71 (EV-A71) is one of the main causative agents of hand, foot and mouth disease (HFMD) and it also causes severe neurologic complications in infected children. The interactions between some viruses and the host mitochondria are crucial for virus replication and pathogenicity. In this study, it was observed that EV-A71 infection resulted in a perinuclear redistribution of the mitochondria. The mitochondria rearrangement was found to require the microtubule network, the dynein complex and a low cytosolic calcium concentration. Subsequently, the EV-A71 non-structural protein 2BC was identified as the viral protein capable of inducing mitochondria clustering. The protein was found localized on mitochondria and interacted with the mitochondrial Rho GTPase 1 (RHOT1) that is a key protein required for attachment between the mitochondria and the motor proteins, which are responsible for the control of mitochondria movement. Additionally, suppressing mitochondria clustering by treating cells with nocodazole, EHNA, thapsigargin or A23187 consistently inhibited EV-A71 replication, indicating that mitochondria recruitment played a crucial role in the EV-A71 life cycle. This study identified a novel function of the EV-A71 2BC protein and provided a potential model for the regulation of mitochondrial motility in EV-A71 infection.
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Affiliation(s)
- Yang Yang
- Center for Molecular Virology, CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.,University of the Chinese Academy of Sciences, Beijing, 100101, China
| | - Haolong Cong
- Center for Molecular Virology, CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Ning Du
- Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xiaodong Han
- College of Life Sciences, Inner Mongolia Agriculture University, Hohhot, 010018, China
| | - Lei Song
- Center for Molecular Virology, CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Wenliang Zhang
- Center for Molecular Virology, CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Chunrui Li
- Center for Molecular Virology, CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.,University of the Chinese Academy of Sciences, Beijing, 100101, China
| | - Po Tien
- Center for Molecular Virology, CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China. .,University of the Chinese Academy of Sciences, Beijing, 100101, China.
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Chaturvedi VK, Singh A, Dubey SK, Hetta HF, John J, Singh M. Molecular mechanistic insight of hepatitis B virus mediated hepatocellular carcinoma. Microb Pathog 2019; 128:184-194. [DOI: 10.1016/j.micpath.2019.01.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 12/30/2018] [Accepted: 01/02/2019] [Indexed: 02/07/2023]
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13
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Zou W, Niu C, Fu Z, Gong C. PNS-R1 inhibits Dex-induced bronchial epithelial cells apoptosis in asthma through mitochondrial apoptotic pathway. Cell Biosci 2019; 9:18. [PMID: 30891181 PMCID: PMC6388479 DOI: 10.1186/s13578-019-0279-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 02/01/2019] [Indexed: 12/04/2022] Open
Abstract
Dexamethasone (Dex) are widely used for the treatment of asthma. However, they may cause apoptosis of bronchial epithelial cells and delay the recovery of asthma. Therefore, it is an urgent problem to find effective drugs to reduce this side effects. Panax notoginseng saponins R1 (PNS-R1) is known to exhibit anti-oxidative and anti-apoptotic properties in many diseases. We aim to investigate whether PNS-R1 can reduce Dex-induced apoptosis in bronchial epithelial cells. In this study, the anti-apoptotic effects of PNS-R1 were investigated by conducting in vitro and in vivo. Annexin V-FITC/PI staining flow cytometry analysis and TUNEL assay were conducted to detect apoptotic cells. Mitochondrial membrane potential was detected by JC-1 analysis. Western blotting and immunohistochemical analysis were conducted to measure caspase3, Bcl-2, Bax, Cyt-c, Apaf-1, cleaved-caspase3 and cleaved-caspase9 levels in lung tissues and 16HBE cells. Our findings demonstrated that Dex could induce apoptosis of bronchial epithelial cells and upregulate caspase3 expression of lung tissues. Western blot showed that Dex increased Bax, Cyt-c, Apaf-1, cleaved-caspase9, cleaved-caspase3 expression and decreased Bcl-2 expression. PNS-R1 could suppress Dex-induced apoptosis of bronchial epithelial cells by inhibiting Bax, Cyt-c, Apaf-1, cleaved-caspase9, cleaved-caspase3 expression and upregulating Bcl-2 expression. Flow cytometry analysis showed PNS-R1 alleviated JC-1 positive cells induced by Dex in 16HBE cells. These results showed that PNS-R1 alleviated Dex-induced apoptosis in bronchial epithelial cells by inhibition of mitochondrial apoptosis pathway. Furthermore, our findings highlighted the potential use of PNS-R1 as an adjuvant drug to treat asthma.
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Affiliation(s)
- Wenjing Zou
- 1Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, 400014 China
| | - Chao Niu
- China International Science and Technology Cooperation base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, 400014 China
| | - Zhou Fu
- China International Science and Technology Cooperation base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, 400014 China
| | - Caihui Gong
- China International Science and Technology Cooperation base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, 400014 China
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Qin X, Li C, Guo T, Chen J, Wang HT, Wang YT, Xiao YS, Li J, Liu P, Liu ZS, Liu QY. Upregulation of DARS2 by HBV promotes hepatocarcinogenesis through the miR-30e-5p/MAPK/NFAT5 pathway. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2017; 36:148. [PMID: 29052520 PMCID: PMC5649064 DOI: 10.1186/s13046-017-0618-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 10/09/2017] [Indexed: 01/17/2023]
Abstract
Background Infection with the hepatitis B virus (HBV) is closely associated with the development of hepatocellular carcinoma (HCC). The osmoregulatory transcription factor nuclear factor of activated T-cells 5 (NFAT5) has been shown to play an important role in the development of many types of human cancers. The role of NFAT5 in HBV-associated HCC has never previously been investigated. Methods We compared expression profiles of NFAT5, DARS2 and miR-30e-5p in HCC samples, adjacent nontumor tissues and different hepatoma cell lines by quantitative real-time polymerase chain reaction and /or Western blot. Clinical data of HCC patients for up to 80 months were analyzed. The regulatory mechanisms upstream and convergent downstream pathways of NFAT5 in HBV-associated HCC were investigated by ChIP-seq, MSP, luciferase report assay and bioinformation anaylsis. Results We first found that higher levels of NFAT5 expression predict a good prognosis, suggesting that NFAT5 is a potential tumor-suppressing gene, and verified that NFAT5 promotes hepatoma cell apoptosis and inhibits cell growth in vitro. Second, our results showed that HBV could suppress NFAT5 expression by inducing hypermethylation of the AP1-binding site in the NFAT5 promoter in hepatoma cells. In addition, HBV also inhibited NFAT5 through miR-30e-5p targeted MAP4K4, and miR-30e-5p in turn inhibited HBV replication. Finally, we demonstrated that NFAT5 suppressed DARS2 by directly binding to its promoter. DARS2 was identified as an HCC oncogene that promotes HCC cell cycle progression and inhibits HCC cell apoptosis. Conclusion HBV suppresses NFAT5 through the miR-30e-5p/mitogen-activated protein kinase (MAPK) signaling pathway upstream of NFAT5 and inhibits the NFAT5 to enhance HCC tumorigenesis via the downstream target genes of DARS2. Electronic supplementary material The online version of this article (10.1186/s13046-017-0618-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xian Qin
- Department of General Surgery, Research Center of Digestive Diseases, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China
| | - Changsheng Li
- Department of General Surgery, Research Center of Digestive Diseases, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China
| | - Tao Guo
- Department of General Surgery, Research Center of Digestive Diseases, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China
| | - Jing Chen
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, People's Republic of China
| | - Hai-Tao Wang
- Department of General Surgery, Research Center of Digestive Diseases, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China
| | - Yi-Tao Wang
- Department of General Surgery, Research Center of Digestive Diseases, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China
| | - Yu-Sha Xiao
- Department of General Surgery, Research Center of Digestive Diseases, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China
| | - Jun Li
- Department of General Surgery, Research Center of Digestive Diseases, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China
| | - Pengpeng Liu
- Department of General Surgery, Research Center of Digestive Diseases, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China
| | - Zhi-Su Liu
- Department of General Surgery, Research Center of Digestive Diseases, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China.
| | - Quan-Yan Liu
- Department of General Surgery, Research Center of Digestive Diseases, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China.
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15
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Chen M, Chen J, Peng X, Xu Z, Shao J, Zhu Y, Li G, Zhu H, Yang B, Luo P, He Q. The contribution of keratinocytes in capecitabine-stimulated hand-foot-syndrome. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 49:81-88. [PMID: 27951409 DOI: 10.1016/j.etap.2016.12.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 11/30/2016] [Accepted: 12/02/2016] [Indexed: 06/06/2023]
Abstract
Capecitabine, as the first-line treatment for multiple tumor types, has a serious drawback of hand-foot-syndrome (HFS) that limits its clinical use. However, the pathophysiology and mechanism of capecitabine-induced HFS is rarely known. Here we built the experimental mouse model of HFS induced by capecitabine at first and it was shown that 3 of 6 mice appeared HFS in the 5th day and 5 mice occurred HFS in the 30th day. The corneous layer was reduced in capecitabine-induced HFS in vivo. Moreover, we found that capecitabine could significantly induce keratinocytes cells death in vitro through activated apoptosis pathway and decreased mitochondrial membrane potential. In conclusion, these results suggested that HFS of capecitabine may be developed from reduction of corneous layer through stimulation of intracellular mitochondrial dysfunction following activation of caspase-dependent apoptosis pathway.
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Affiliation(s)
- Min Chen
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jian Chen
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial People's Hospital, Hangzhou 310058, China
| | - Xueming Peng
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Zhifei Xu
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jinjin Shao
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yuanrun Zhu
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Guanqun Li
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Hong Zhu
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Bo Yang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Peihua Luo
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Qiaojun He
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.
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Abstract
OBJECTIVE The objective of this study was to determine the mechanism by which activation of peroxisome proliferator-activated receptor-γ promotes apoptosis of acinar cells in pancreatitis. METHODS AR42j cells pretreated with the peroxisome proliferator-activated receptor-γ agonist pioglitazone were activated by cerulein as an in vitro model of acute pancreatitis. Inflammatory cytokines and amylase were detected by enzyme-linked immunosorbent assay. Cell viability was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Cell apoptosis was measured by flow cytometry and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling staining. Activity of caspases was determined. Bax and Bcl-2 levels were assayed by Western blot. RESULTS Cytokines, amylase, and cellular proliferation decreased in pioglitazone-pretreated cells. Pioglitazone increased the activity of caspases 3, 8, and 9 in cerulein-activated AR42j cells as well as in the pancreas of rats 3 hours after induction of severe acute pancreatitis. Acinar cell apoptosis was induced by reducing the mitochondrial membrane potential in the pioglitazone group. Pioglitazone increased expression of proapoptotic Bax proteins and decreased antiapoptotic Bcl-2 in cerulein-induced AR42j cells and decreased Bcl-2 levels in pancreatic tissue of severe acute pancreatitis rats 1 and 3 hours after induction. CONCLUSION Pioglitazone may promote apoptosis of acinar cells through both intrinsic and extrinsic apoptotic pathways in acute pancreatitis.
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Interactions of Hepatitis B Virus Infection with Nonalcoholic Fatty Liver Disease: Possible Mechanisms and Clinical Impact. Dig Dis Sci 2015; 60:3513-24. [PMID: 26112990 DOI: 10.1007/s10620-015-3772-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 06/17/2015] [Indexed: 12/19/2022]
Abstract
Hepatitis B virus (HBV) infection is a major etiology of chronic liver disease worldwide. In the past decade, nonalcoholic fatty liver disease (NAFLD) has emerged as a common liver disorder in general population. Accordingly, the patient number of chronic hepatitis B (CHB) concomitant with NAFLD grows rapidly. The present article reviewed the recent studies aiming to explore the relationship between CHB and NAFLD from different aspects, including the relevant pathogenesis of CHB and NAFLD, the intracellular molecular mechanisms overlaying HBV infection and hepatic steatosis, and the observational studies with animal models and clinical cohorts for analyzing the coincidence of the two diseases. It is concluded that although numerous cross-links have been suggested between the molecular pathways in HBV infection and NAFLD pathogenesis, regarding whether HBV infection can substantially interfere with the occurrence of NAFLD or vice versa in the patients, there is still far from a conclusive agreement.
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Sakai C, Yamaguchi S, Sasaki M, Miyamoto Y, Matsushima Y, Goto YI. ECHS1 mutations cause combined respiratory chain deficiency resulting in Leigh syndrome. Hum Mutat 2015; 36:232-9. [PMID: 25393721 DOI: 10.1002/humu.22730] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 11/05/2014] [Indexed: 12/31/2022]
Abstract
The human ECHS1 gene encodes the short-chain enoyl coenzyme A hydratase, the enzyme that catalyzes the second step of β-oxidation of fatty acids in the mitochondrial matrix. We report on a boy with ECHS1 deficiency who was diagnosed with Leigh syndrome at 21 months of age. The patient presented with hypotonia, metabolic acidosis, and developmental delay. A combined respiratory chain deficiency was also observed. Targeted exome sequencing of 776 mitochondria-associated genes encoded by nuclear DNA identified compound heterozygous mutations in ECHS1. ECHS1 protein expression was severely depleted in the patient's skeletal muscle and patient-derived myoblasts; a marked decrease in enzyme activity was also evident in patient-derived myoblasts. Immortalized patient-derived myoblasts that expressed exogenous wild-type ECHS1 exhibited the recovery of the ECHS1 activity, indicating that the gene defect was pathogenic. Mitochondrial respiratory complex activity was also mostly restored in these cells, suggesting that there was an unidentified link between deficiency of ECHS1 and respiratory chain. Here, we describe the patient with ECHS1 deficiency; these findings will advance our understanding not only the pathology of mitochondrial fatty acid β-oxidation disorders, but also the regulation of mitochondrial metabolism.
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Affiliation(s)
- Chika Sakai
- Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
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Yashin AI, Wu D, Arbeeva LS, Arbeev KG, Kulminski AM, Akushevich I, Kovtun M, Culminskaya I, Stallard E, Li M, Ukraintseva SV. Genetics of aging, health, and survival: dynamic regulation of human longevity related traits. Front Genet 2015; 6:122. [PMID: 25918517 PMCID: PMC4394697 DOI: 10.3389/fgene.2015.00122] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Accepted: 03/16/2015] [Indexed: 11/13/2022] Open
Abstract
Background: The roles of genetic factors in human longevity would be better understood if one can use more efficient methods in genetic analyses and investigate pleiotropic effects of genetic variants on aging and health related traits. Data and methods: We used EMMAX software with modified correction for population stratification to perform genome wide association studies (GWAS) of female lifespan from the original FHS cohort. The male data from the original FHS cohort and male and female data combined from the offspring FHS cohort were used to confirm findings. We evaluated pleiotropic effects of selected genetic variants as well as gene-smoking interactions on health and aging related traits. Then we reviewed current knowledge on functional properties of genes related to detected variants. Results: The eight SNPs with genome-wide significant variants were negatively associated with lifespan in both males and females. After additional QC, two of these variants were selected for further analyses of their associations with major diseases (cancer and CHD) and physiological aging changes. Gene-smoking interactions contributed to these effects. Genes closest to detected variants appear to be involved in similar biological processes and health disorders, as those found in other studies of aging and longevity e.g., in cancer and neurodegeneration. Conclusions: The impact of genes on longevity may involve trade-off-like effects on different health traits. Genes that influence lifespan represent various molecular functions but may be involved in similar biological processes and health disorders, which could contribute to genetic heterogeneity of longevity and the lack of replication in genetic association studies.
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Affiliation(s)
- Anatoliy I Yashin
- Biodemography of Aging Research Unit, Center for Population Health and Aging, Social Science Research Institute, Duke University Durham, NC, USA
| | - Deqing Wu
- Biodemography of Aging Research Unit, Center for Population Health and Aging, Social Science Research Institute, Duke University Durham, NC, USA
| | - Liubov S Arbeeva
- Biodemography of Aging Research Unit, Center for Population Health and Aging, Social Science Research Institute, Duke University Durham, NC, USA
| | - Konstantin G Arbeev
- Biodemography of Aging Research Unit, Center for Population Health and Aging, Social Science Research Institute, Duke University Durham, NC, USA
| | - Alexander M Kulminski
- Biodemography of Aging Research Unit, Center for Population Health and Aging, Social Science Research Institute, Duke University Durham, NC, USA
| | - Igor Akushevich
- Biodemography of Aging Research Unit, Center for Population Health and Aging, Social Science Research Institute, Duke University Durham, NC, USA
| | - Mikhail Kovtun
- Biodemography of Aging Research Unit, Center for Population Health and Aging, Social Science Research Institute, Duke University Durham, NC, USA ; Integrative Genomic Analysis Shared Resource, Duke Center for Genomic and Computational Biology, Duke University Durham, NC, USA
| | - Irina Culminskaya
- Biodemography of Aging Research Unit, Center for Population Health and Aging, Social Science Research Institute, Duke University Durham, NC, USA
| | - Eric Stallard
- Biodemography of Aging Research Unit, Center for Population Health and Aging, Social Science Research Institute, Duke University Durham, NC, USA
| | - Miaozhu Li
- Biodemography of Aging Research Unit, Center for Population Health and Aging, Social Science Research Institute, Duke University Durham, NC, USA
| | - Svetlana V Ukraintseva
- Biodemography of Aging Research Unit, Center for Population Health and Aging, Social Science Research Institute, Duke University Durham, NC, USA
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Identification of hepatocellular carcinoma-associated hub genes and pathways by integrated microarray analysis. TUMORI JOURNAL 2015; 101:206-14. [PMID: 25768320 DOI: 10.5301/tj.5000241] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/11/2014] [Indexed: 02/07/2023]
Abstract
AIMS AND BACKGROUND Hepatocellular carcinoma (HCC) is a dismal malignancy associated with multiple molecular changes. The purpose of this study was to identify the differentially expressed genes and analyze the biological processes related to HCC. METHODS AND STUDY DESIGN Datasets of HCC were obtained from the NCBI Gene Expression Omnibus. Integrated analysis of differentially expressed genes was performed using the INMEX program. Then Gene Ontology enrichment analyses and pathway analysis were performed based on the Gene Ontology website and Kyoto Encyclopedia of Genes and Genomes. A protein-protein interaction network was constructed using the Cytoscape software; the netwerk served to find hub genes for HCC. Real-time RT-PCR was used to validate the microarray data for hub genes. RESULTS We identified 273 genes that were differentially expressed in HCC. Gene Ontology enrichment analyses revealed response to cadmium ion, cellular response to cadmium ion, and cellular response to zinc ion for these genes. Pathway analysis showed that significant pathways included fatty acid metabolism, butanoate metabolism, and PPAR signaling pathway. The protein-protein interaction network indicated that CDH1, ECHS1, ACAA1, MT2A, and MYC were important genes which participated in many interactions. Experimental validation of the role of four upregulated genes (ECHS1, ACAA1, MT2A and MYC) in the progression of HCC was carried out. CONCLUSIONS Our study displayed genes that were consistently differentially expressed in HCC. The biological pathways and protein-protein interaction networks associated with those genes were also identified. We predicted that CDH1, ECHS1, ACAA1, MT2A, and MYC might be target genes for diagnosing HCC.
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21
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Zhu XS, Gao P, Dai YC, Xie JP, Zeng W, Lian QN. Attenuation of enoyl coenzyme A hydratase short chain 1 expression in gastric cancer cells inhibits cell proliferation and migration in vitro. Cell Mol Biol Lett 2014; 19:576-89. [PMID: 25338767 PMCID: PMC6275702 DOI: 10.2478/s11658-014-0213-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Accepted: 10/10/2014] [Indexed: 01/13/2023] Open
Abstract
Enoyl coenzyme A hydratase short chain 1 (ECHS1) is an important part of the mitochondrial fatty acid β-oxidation pathway. Altered ECHS1 expression has been implicated in cancer cell proliferation. This study assessed ECHS1 expression in human gastric cancer cell lines and investigated the effects of ECHS1 knockdown on gastric cancer cell proliferation and migration. The human gastric cancer cell lines SGC-7901, BGC-823 and MKN-28, and the immortalized human gastric epithelial mucosa GES-1 cell line were analyzed for ECHS1 protein levels using western blot. The effectiveness of ECHS1-RNA interference was also determined using western blot. Proliferation and migration of the siECHS1 cells were respectively measured with the CCK-8 and transwell assays. Phosphorylation of PKB and GSK3β was assessed using western blot. ECHS1 protein levels were significantly higher in poorly differentiated cells than in well-differentiated cells and immortalized gastric epithelial mucosa cells. Stable expression of ECHS1 shRNA was associated with an over 41% reduction in the ECHS1 protein levels of siECHS1 cells. Constitutive knockdown of the ECHS1 gene in siECHS1 cells was associated with significantly inhibited cell proliferation and migration. We also observed decreased levels of PKB and GSK3β phosphorylation in siECHS1 cells. ECHS1 expression is increased in human gastric cancer cells. Increased ECHS1 expression activates PKB and GSK3β by inducing the phosphorylation of the two kinases. ECHS1 may play important roles in gastric cancer cell proliferation and migration through PKB- and GSK3β-related signaling pathways.
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Affiliation(s)
- Xiao-San Zhu
- Department of Gastroenterology, Chenggong Hospital Affiliated to Xiamen University, Xiamen, Fujian, 361003 China
| | - Peng Gao
- Department of Gastroenterology, Chenggong Hospital Affiliated to Xiamen University, Xiamen, Fujian, 361003 China
| | - Yi-Chen Dai
- Department of Gastroenterology, Chenggong Hospital Affiliated to Xiamen University, Xiamen, Fujian, 361003 China
| | - Jun-Pei Xie
- Department of Gastroenterology, Chenggong Hospital Affiliated to Xiamen University, Xiamen, Fujian, 361003 China
| | - Wei Zeng
- Department of Gastroenterology, Chenggong Hospital Affiliated to Xiamen University, Xiamen, Fujian, 361003 China
| | - Qing-Na Lian
- Department of Gastroenterology, Chenggong Hospital Affiliated to Xiamen University, Xiamen, Fujian, 361003 China
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22
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Lin L, Piao J, Ma Y, Jin T, Quan C, Kong J, Li Y, Lin Z. Mechanisms underlying cancer growth and apoptosis by DEK overexpression in colorectal cancer. PLoS One 2014; 9:e111260. [PMID: 25340858 PMCID: PMC4207817 DOI: 10.1371/journal.pone.0111260] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 09/24/2014] [Indexed: 11/18/2022] Open
Abstract
Our previous study indicated that DEK protein was overexpressed in colorectal carcinoma (CRC) compared with the normal colorectal mucosa. DEK was also significantly correlated with the prognostic characteristics of patients with CRC, demonstrating that DEK played an important role in CRC progression. In this work, we evaluate the effects of DEK on biological behaviors in CRC and explore the related molecular mechanisms. The results showed that DEK was overexpressed in human CRC tissues, and was correlated with the Ki-67 index and the apoptotic index. DEK depletion by RNAi in SW-620 and HCT116 cells significantly decreased cell proliferation, but increased cell apoptosis. Upregulation of DEK was involved in the p53/MDM, Bcl-2 family, and caspase pathways. Our study demonstrates that DEK promotes the growth of CRC, and could be a therapeutic target in CRC.
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Affiliation(s)
- Lijuan Lin
- Department of Pathology & Cancer Research Center, Yanbian University Medical College, Yanji, China
- Department of Medical Imaging, College of Medicine, Eastern Liaoning University, Dandong, China
| | - Junjie Piao
- Department of Pathology & Cancer Research Center, Yanbian University Medical College, Yanji, China
| | - Yibing Ma
- Department of Pathology, Dandong Centre Hospital, Dandong, China
| | - Tiefeng Jin
- Department of Pathology & Cancer Research Center, Yanbian University Medical College, Yanji, China
| | - Chengshi Quan
- The Key Laboratory of Pathobiology, Ministry of Education, Bethune Medical College, Jilin University, Changchun, China
| | - Jienan Kong
- Department of Pathology & Cancer Research Center, Yanbian University Medical College, Yanji, China
| | - Yulin Li
- The Key Laboratory of Pathobiology, Ministry of Education, Bethune Medical College, Jilin University, Changchun, China
| | - Zhenhua Lin
- Department of Pathology & Cancer Research Center, Yanbian University Medical College, Yanji, China
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23
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Xu HZ, Liu YP, Guleng B, Ren JL. Hepatitis B Virus-Related Hepatocellular Carcinoma: Pathogenic Mechanisms and Novel Therapeutic Interventions. Gastrointest Tumors 2014; 1:135-45. [PMID: 26676160 DOI: 10.1159/000365307] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Infection with the hepatitis B virus (HBV) is one of most important risk factors for hepatocellular carcinoma (HCC). Indeed, HBV is considered a group 1 human carcinogen and is a highly oncogenic agent. HBV cannot be effectively controlled or completely eliminated, so chronic HBV infection is a public health challenge worldwide. SUMMARY It is now believed that HBV-induced HCC involves a complex interaction between multiple viral and host factors. Many factors contribute to HBV-associated HCC, including products of HBV, viral integration and mutation, and host susceptibility. This review outlines the main pathogenic mechanisms with a focus on those that suggest novel targets for the prevention and treatment of HCC. KEY MESSAGE HBV infection is an important risk factor for HCC. Understanding the interaction between viral and host factors in HBV-induced HCC will reveal potential targets for future therapies. PRACTICAL IMPLICATIONS The two main therapeutic strategies consist of antiviral agents and immunotherapy-based approaches. Dendritic cell-based immunotherapy is promising for restoring the T cell-mediated antiviral immune response. Another approach is the specific expansion of the host's pool of HBV-specific T cells. Stimulation of the Toll-like receptors (TLRs), particularly TLR9, provides another means of boosting the antiviral response. Combination therapy with cytokines (interferon gamma and tumor necrosis factor alpha) plus lamivudine is more effective than these agents used alone. Therapeutic vaccines are being developed as an alternative to long-term antiviral treatment or as an adjunct.
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Affiliation(s)
- Hong-Zhi Xu
- Department of Gastroenterology, Zhongshan Hospital affiliated with Xiamen University, Xiamen, China
| | - Yun-Peng Liu
- Department of Gastroenterology, Zhongshan Hospital affiliated with Xiamen University, Xiamen, China
| | - Bayasi Guleng
- Department of Gastroenterology, Zhongshan Hospital affiliated with Xiamen University, Xiamen, China ; Medical College of Xiamen University, Xiamen, China
| | - Jian-Lin Ren
- Department of Gastroenterology, Zhongshan Hospital affiliated with Xiamen University, Xiamen, China
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24
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Deng Y, Du Y, Zhang Q, Han X, Cao G. Human cytidine deaminases facilitate hepatitis B virus evolution and link inflammation and hepatocellular carcinoma. Cancer Lett 2013; 343:161-71. [PMID: 24120759 DOI: 10.1016/j.canlet.2013.09.041] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 09/27/2013] [Accepted: 09/27/2013] [Indexed: 12/13/2022]
Abstract
During hepatitis B virus (HBV)-induced hepatocarcinogenesis, chronic inflammation facilitates the evolution of hepatocellular carcinoma (HCC)-promoting HBV mutants. Cytidine deaminases, whose expression is stimulated by inflammatory cytokines and/or chemokines, play an important role in bridging inflammation and HCC. Through G-to-A hypermutation, cytidine deaminases inhibit HBV replication and facilitate the generation of HCC-promoting HBV mutants including C-terminal-truncated HBx. Cytidine deaminases also promote cancer-related somatic mutations including TP53 mutations. Their editing efficiency is counteracted by uracil-DNA glycosylase. Understanding the effects of cytidine deaminases in HBV-induced hepatocarcinogenesis and HCC progression will aid in developing efficient prophylactic and therapeutic strategies against HCC in HBV-infected population.
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Affiliation(s)
- Yang Deng
- Department of Epidemiology, Second Military Medical University, Shanghai, China
| | - Yan Du
- Department of Epidemiology, Second Military Medical University, Shanghai, China
| | - Qi Zhang
- Department of Epidemiology, Second Military Medical University, Shanghai, China
| | - Xue Han
- Division of Chronic Diseases, Center for Disease Control and Prevention of Yangpu District, Shanghai, China
| | - Guangwen Cao
- Department of Epidemiology, Second Military Medical University, Shanghai, China.
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25
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Xu C, Zhou W, Wang Y, Qiao L. Hepatitis B virus-induced hepatocellular carcinoma. Cancer Lett 2013; 345:216-22. [PMID: 23981576 DOI: 10.1016/j.canlet.2013.08.035] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 08/10/2013] [Accepted: 08/18/2013] [Indexed: 12/12/2022]
Abstract
Many factors are considered to contribute to hepatitis B virus (HBV) associated hepatocellular carcinoma (HCC), including products of HBV, HBV integration and mutation, and host susceptibility. HBV X protein (HBx) can interfere with several signal pathways that associated with cell proliferation and apoptosis, and the impact of HBx C-terminal truncation in the development of HCC has been implicated. Recent studies by advanced sequencing technologies have revealed recurrent HBV DNA integration sites in hepatoma cells and susceptible genes/SNPs play an important role in the pathogenesis of liver cancer. Epigenetic changes, immune and inflammatory factors are also important contributing factors for liver cancer. This mini-review provides an overview on the recent development of HBV induced HCC.
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Affiliation(s)
- Cheng Xu
- Institute for Infectious Diseases, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - Wence Zhou
- The Department of General Surgery II, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Yuming Wang
- Institute for Infectious Diseases, Southwest Hospital, Third Military Medical University, Chongqing 400038, China.
| | - Liang Qiao
- Storr Liver Unit, University of Sydney, Westmead Millennium Institute, Westmead Hospital, Westmead, NSW 2145, Australia.
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26
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Zhang YQ, Xiao CX, Lin BY, Shi Y, Liu YP, Liu JJ, Guleng B, Ren JL. Silencing of Pokemon enhances caspase-dependent apoptosis via fas- and mitochondria-mediated pathways in hepatocellular carcinoma cells. PLoS One 2013; 8:e68981. [PMID: 23874836 PMCID: PMC3714264 DOI: 10.1371/journal.pone.0068981] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 06/01/2013] [Indexed: 01/24/2023] Open
Abstract
The role of Pokemon (POK erythroid myeloid ontogenic actor), a recently identified POK transcription factor with proto-oncogenic activity, in hepatocellular carcinogenesis has only been assessed by a few studies. Our previous study revealed that Pokemon is overexpressed in hepatocellular carcinomas (HCC) and promotes HCC cell proliferation and migration via an AKT- and ERK- dependent manner. In the present study, we used the TUNEL assay and FACS analysis to demonstrate that oxaliplatin induced apoptosis was significantly increased in cells with silenced Pokemon. Western blots showed that p53 expression and phosphorylation were significantly increased in Pokemon defective cells, thereby initiating the mitochondria-mediated and death receptor-mediated apoptotic pathways. In the mitochondria-mediated pathway, expression of pro-apoptotic Bcl-2 family members (including Bad, Bid, Bim and Puma) as well as AIF was increased and decreasing the mitochondrial membrane potential resulted in cytochrome C released from mitochondrial in HepG2 si-Pokemon cells. In addition, upon oxaliplatin treatment of Pokemon-silenced cells, the FAS receptor, FADD and their downstream targets caspase-10 and caspase-8 were activated, causing increased release of caspase-8 active fragments p18 and p10. Increased activated caspase-8-mediated cleavage and activation of downstream effector caspases such as caspase-9 and caspase-3 was observed in HepG2 si-Pokemon cells as compared to control. Therefore, Pokemon might serve as an important mediator of crosstalk between intrinsic and extrinsic apoptotic pathways in HCC cells. Moreover, our findings suggest that Pokemon could be an attractive therapeutic target gene for human cancer therapy.
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Affiliation(s)
- Yu-Qin Zhang
- Department of Gastroenterology, Zhongshan Hospital affiliated to Xiamen University, Xiamen, China
| | - Chuan-Xing Xiao
- Department of Gastroenterology, Zhongshan Hospital affiliated to Xiamen University, Xiamen, China
| | - Bi-Yun Lin
- Department of Gastroenterology, Zhongshan Hospital affiliated to Xiamen University, Xiamen, China
| | - Ying Shi
- Department of Gastroenterology, Zhongshan Hospital affiliated to Xiamen University, Xiamen, China
| | - Yun-Peng Liu
- Department of Gastroenterology, Zhongshan Hospital affiliated to Xiamen University, Xiamen, China
| | - Jing-Jing Liu
- Department of Gastroenterology, Zhongshan Hospital affiliated to Xiamen University, Xiamen, China
| | - Bayasi Guleng
- Department of Gastroenterology, Zhongshan Hospital affiliated to Xiamen University, Xiamen, China
- Faculty of Clinical Medicine, Medical College of Xiamen University, Xiamen, China
- * E-mail: (BG); (JLR)
| | - Jian-Lin Ren
- Department of Gastroenterology, Zhongshan Hospital affiliated to Xiamen University, Xiamen, China
- * E-mail: (BG); (JLR)
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27
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LIN BIYUN, XIAO CHUANXING, ZHAO WENXIU, XIAO LI, CHEN XU, LI PING, WANG XIAOMIN. Enoyl-coenzyme A hydratase short chain 1 silencing attenuates the proliferation of hepatocellular carcinoma by inhibiting epidermal growth factor signaling in vitro and in vivo. Mol Med Rep 2012; 12:1421-8. [DOI: 10.3892/mmr.2015.3453] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 02/17/2015] [Indexed: 11/06/2022] Open
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