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Dong Z, Dai B, Wu R, Fang K, Sui C, Geng L, Yang J. Expression Characteristics, Immune Signature, and Prognostic Value of the SOCS Family Identified by Multiomics Integrative Analysis in Liver Cancer. Cancer Rep (Hoboken) 2024; 7:e2161. [PMID: 39307915 PMCID: PMC11416904 DOI: 10.1002/cnr2.2161] [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: 11/10/2023] [Revised: 07/10/2024] [Accepted: 07/16/2024] [Indexed: 09/25/2024] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is a prevalent malignancy with a high mortality rate worldwide. Suppressor of cytokine signaling (SOCS) family members play important roles in the proliferation, metabolism, and immunity of HCC cells by regulating cytokines and growth factors. However, it remains uncertain whether the level of SOCS family members can affect the prognosis of HCC patients. AIMS This study aimed to comprehensively assess the role and mechanisms of SOCS family members in the development of HCC and to guide clinical selection. METHODS We investigated the expression levels of SOCS family genes in HCC patients and their associations with various clinicopathological characteristics. We also utilized a public database to analyze the changes in the expression, potential functions, transcription factors, and immune invasion of SOCS family members. Additionally, we examined the prognostic value of the SOC family for HCC and its correlation with the SOC family and ferroptosis-related genes. RESULTS This study revealed that the expression of SOCS2-7, and CISH was downregulated in HCC. The SOCS4, SOCS5, and SOCS7 genes were associated with the clinicopathological features of HCC patients. SOCS family genes are mainly related to the PIK3R3, GHR, and TNS4 pathways. Additionally, this study revealed that STAT3, PPAR-gamma 2, and IRF-2 are important transcription factors that regulate SOCS family members. The expression levels of SOCS family members are closely related to immune infiltration in liver cancer. The study also indicated that SOCS2 and SOCS4 are risk-related genes for predicting the prognosis of patients with liver cancer. Finally, this study suggested that the SOCS2 gene may be involved in the development and progression of HCC. CONCLUSION Our study enhances the current understanding of SOCS gene function in liver cancer and can help clinicians select appropriate drugs and predict the prognosis of HCC patients.
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Affiliation(s)
- Zhitao Dong
- Department of Special TreatmentShanghai Eastern Hepatobiliary Surgery HospitalShanghaiChina
| | - Binghua Dai
- Department of Special TreatmentShanghai Eastern Hepatobiliary Surgery HospitalShanghaiChina
| | - Rui Wu
- Department of Special TreatmentShanghai Eastern Hepatobiliary Surgery HospitalShanghaiChina
| | - Kunpeng Fang
- Department of Special TreatmentShanghai Eastern Hepatobiliary Surgery HospitalShanghaiChina
| | - Chengjun Sui
- Department of Special TreatmentShanghai Eastern Hepatobiliary Surgery HospitalShanghaiChina
| | - Li Geng
- Department of Special TreatmentShanghai Eastern Hepatobiliary Surgery HospitalShanghaiChina
| | - Jiamei Yang
- Department of Special TreatmentShanghai Eastern Hepatobiliary Surgery HospitalShanghaiChina
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2
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Chen L, Li X, Wu Y, Wang J, Pi J. Differential analysis of ovarian tissue between high and low-yielded laying hens in the late laying stage and the effect of LECT2 gene on follicular granulosa cells proliferation. Mol Biol Rep 2024; 51:240. [PMID: 38300380 DOI: 10.1007/s11033-024-09260-8] [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: 09/15/2023] [Accepted: 01/15/2024] [Indexed: 02/02/2024]
Abstract
The ovaries of high-yield laying hens exhibited signs of aging beyond 400 days of age, subsequently resulting in a decline in both egg production and egg quality. Oxidative stress, characterized by an increase in the production of reactive oxygen species (ROS), stands as one of the principal processes contributing to ovarian aging. Elevated ROS levels are implicated in the induction of apoptosis in granulosa cells (GCs), provoking mitochondrial impairment, and diminishing the capacity of the antioxidant defense system. This investigation stratified laying hens into two distinct groups, predicated upon their egg production levels: high-yield hens (HH) and low-yield hens (LL). The study focused on evaluating oxidative stress markers and identifying differentially expressed genes between these two groups. The findings revealed that the LL group exhibited follicular atresia, mitochondrial disruptions, and apoptotic occurrences in ovarian GCs. Notably, ROS levels, Malondialdehyde (MDA) concentrations, and 8-hydroxy-2'-deoxyguanosine (8-OHdG) concentrations in ovarian tissue and follicular GCs were substantially higher in the HH group. Furthermore, the RNA-sequencing results unveiled differential expression of the LECT2 gene between the HH and LL groups. Consequently, an overexpression vector for the LECT2 gene was successfully constructed and introduced into GCs. The quantitative polymerase chain reaction (QPCR) analysis exhibited significant downregulation (p < 0.01) of key apoptotic genes such as Caspase-3 and C-myc and significant upregulation (p < 0.01) of BCL2 following the overexpression of the LECT2 gene in GCs. In conclusion, oxidative stress emerges as a pivotal factor influencing the laying traits of both high and low-yield laying hens. The accumulation of reactive oxygen species (ROS) within the ovaries precipitates apoptosis in GCs, subsequently leading to follicular atresia and a reduction in egg production. Furthermore, we employed RNA sequencing technology to examine the ovarian matrix tissue in high and low laying hens during the late phase of egg laying. Our analysis revealed a substantial upregulation of the LECT2 gene in the ovarian matrix tissue of high laying hens. This observation implies that the LECT2 gene exerts a pivotal influence on driving the proliferation and differentiation of follicular GCs, thereby exerting a crucial regulatory role in follicular development.
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Affiliation(s)
- Lin Chen
- Animal Husbandry and Veterinary Research Institute, Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Hubei Academy of Agricultural Sciences, Wuhan, 430000, China
- College of Animal Science, Yangtze University, Jingzhou, 434000, China
| | - Xianqiang Li
- Animal Husbandry and Veterinary Research Institute, Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Hubei Academy of Agricultural Sciences, Wuhan, 430000, China
- College of Animal Science, Yangtze University, Jingzhou, 434000, China
| | - Yan Wu
- Animal Husbandry and Veterinary Research Institute, Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Hubei Academy of Agricultural Sciences, Wuhan, 430000, China.
| | - Jiaxiang Wang
- College of Animal Science, Yangtze University, Jingzhou, 434000, China
| | - Jinsong Pi
- Animal Husbandry and Veterinary Research Institute, Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Hubei Academy of Agricultural Sciences, Wuhan, 430000, China
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Stewart H, Lu Y, O’Keefe S, Valpadashi A, Cruz-Zaragoza LD, Michel HA, Nguyen SK, Carnell GW, Lukhovitskaya N, Milligan R, Adewusi Y, Jungreis I, Lulla V, Matthews DA, High S, Rehling P, Emmott E, Heeney JL, Davidson AD, Edgar JR, Smith GL, Firth AE. The SARS-CoV-2 protein ORF3c is a mitochondrial modulator of innate immunity. iScience 2023; 26:108080. [PMID: 37860693 PMCID: PMC10583119 DOI: 10.1016/j.isci.2023.108080] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 08/06/2023] [Accepted: 09/25/2023] [Indexed: 10/21/2023] Open
Abstract
The SARS-CoV-2 genome encodes a multitude of accessory proteins. Using comparative genomic approaches, an additional accessory protein, ORF3c, has been predicted to be encoded within the ORF3a sgmRNA. Expression of ORF3c during infection has been confirmed independently by ribosome profiling. Despite ORF3c also being present in the 2002-2003 SARS-CoV, its function has remained unexplored. Here we show that ORF3c localizes to mitochondria, where it inhibits innate immunity by restricting IFN-β production, but not NF-κB activation or JAK-STAT signaling downstream of type I IFN stimulation. We find that ORF3c is inhibitory after stimulation with cytoplasmic RNA helicases RIG-I or MDA5 or adaptor protein MAVS, but not after TRIF, TBK1 or phospho-IRF3 stimulation. ORF3c co-immunoprecipitates with the antiviral proteins MAVS and PGAM5 and induces MAVS cleavage by caspase-3. Together, these data provide insight into an uncharacterized mechanism of innate immune evasion by this important human pathogen.
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Affiliation(s)
- Hazel Stewart
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - Yongxu Lu
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - Sarah O’Keefe
- Faculty of Biology, Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, UK
| | - Anusha Valpadashi
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany
| | | | | | | | - George W. Carnell
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | | | - Rachel Milligan
- School of Cellular and Molecular Medicine, Faculty of Life Sciences, University of Bristol, Bristol, UK
| | - Yasmin Adewusi
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - Irwin Jungreis
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- MIT Computer Science and Artificial Intelligence Laboratory, Cambridge, MA, USA
| | - Valeria Lulla
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - David A. Matthews
- School of Cellular and Molecular Medicine, Faculty of Life Sciences, University of Bristol, Bristol, UK
| | - Stephen High
- Faculty of Biology, Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, UK
| | - Peter Rehling
- Department of Cellular Biochemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Edward Emmott
- Centre for Proteome Research, Department of Biochemistry & Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Jonathan L. Heeney
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Andrew D. Davidson
- School of Cellular and Molecular Medicine, Faculty of Life Sciences, University of Bristol, Bristol, UK
| | - James R. Edgar
- Department of Pathology, University of Cambridge, Cambridge, UK
| | | | - Andrew E. Firth
- Department of Pathology, University of Cambridge, Cambridge, UK
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4
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Zhang X, Xia H, Wang Q, Cui M, Zhang C, Wang Q, Liu X, Chen K. SOCSs: important regulators of host cell susceptibility or resistance to viral infection. Z NATURFORSCH C 2023; 78:327-335. [PMID: 37233326 DOI: 10.1515/znc-2023-0024] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 04/27/2023] [Indexed: 05/27/2023]
Abstract
Suppressors of cytokine signaling (SOCSs) are implicated in viral infection and host antiviral innate immune response. Recent studies demonstrate that viruses can hijack SOCSs to inhibit Janus kinase-signal transducers and activators of transcription (JAK-STAT) pathway, block the production and signaling of interferons (IFNs). At the same time, viruses can hijack SOCS to regulate non-IFN factors to evade antiviral response. Host cells can also regulate SOCSs to resist viral infection. The competition of the control of SOCSs may largely determine the fate of viral infection and the susceptibility or resistance of host cells, which is of significance for development of novel antiviral therapies targeting SOCSs. Accumulating evidence reveal that the regulation and function of SOCSs by viruses and host cells are very complicated, which is determined by characteristics of both viruses and host cell types. This report presents a systematic review to evaluate the roles of SOCSs in viral infection and host antiviral responses. One of messages worth attention is that all eight SOCS members should be investigated to accurately characterize their roles and relative contribution in each viral infection, which may help identify the most effective SOCS to be used in "individualized" antiviral therapy.
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Affiliation(s)
- Xin Zhang
- Jiangsu University, Zhenjiang, 212013, China
| | - Hengchuan Xia
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Qian Wang
- Jiangsu University, Zhenjiang, China
| | - Miao Cui
- Jiangsu University, Zhenjiang, Jiangsu, China
| | - Cong Zhang
- Jiangsu University, Zhenjiang, Jiangsu, China
| | - Qiang Wang
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | | | - Keping Chen
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
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5
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Nag S, Szederkenyi K, Gorbenko O, Tyrrell H, Yip CM, McQuibban GA. PGAM5 is an MFN2 phosphatase that plays an essential role in the regulation of mitochondrial dynamics. Cell Rep 2023; 42:112895. [PMID: 37498743 DOI: 10.1016/j.celrep.2023.112895] [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: 12/29/2022] [Revised: 06/13/2023] [Accepted: 07/13/2023] [Indexed: 07/29/2023] Open
Abstract
Mitochondrial morphology is regulated by the post-translational modifications of the dynamin family GTPase proteins including mitofusin 1 (MFN1), MFN2, and dynamin-related protein 1 (DRP1). Mitochondrial phosphatase phosphoglycerate mutase 5 (PGAM5) is emerging as a regulator of these post-translational modifications; however, its precise role in the regulation of mitochondrial morphology is unknown. We show that PGAM5 interacts with MFN2 and DRP1 in a stress-sensitive manner. PGAM5 regulates MFN2 phosphorylation and consequently protects it from ubiquitination and degradation. Further, phosphorylation and dephosphorylation modification of MFN2 regulates its fusion ability. Phosphorylation enhances fission and degradation, whereas dephosphorylation enhances fusion. PGAM5 dephosphorylates MFN2 to promote mitochondrial network formation. Further, using a Drosophila genetic model, we demonstrate that the MFN2 homolog Marf and dPGAM5 are in the same biological pathway. Our results identify MFN2 dephosphorylation as a regulator of mitochondrial fusion and PGAM5 as an MFN2 phosphatase.
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Affiliation(s)
- Sudeshna Nag
- Department of Biochemistry, University of Toronto, MaRS Centre West Tower, 661 University Avenue, Toronto, ON M5G 1M1, Canada
| | - Kaitlin Szederkenyi
- Department of Biochemistry, University of Toronto, MaRS Centre West Tower, 661 University Avenue, Toronto, ON M5G 1M1, Canada; Terrence Donnelly Centre for Cellular and Biomolecular Research, 160 College Street, Toronto, ON M5S 3E1, Canada
| | - Olena Gorbenko
- Department of Biochemistry, University of Toronto, MaRS Centre West Tower, 661 University Avenue, Toronto, ON M5G 1M1, Canada
| | - Hannah Tyrrell
- Department of Biochemistry, University of Toronto, MaRS Centre West Tower, 661 University Avenue, Toronto, ON M5G 1M1, Canada
| | - Christopher M Yip
- Department of Biochemistry, University of Toronto, MaRS Centre West Tower, 661 University Avenue, Toronto, ON M5G 1M1, Canada; Terrence Donnelly Centre for Cellular and Biomolecular Research, 160 College Street, Toronto, ON M5S 3E1, Canada
| | - G Angus McQuibban
- Department of Biochemistry, University of Toronto, MaRS Centre West Tower, 661 University Avenue, Toronto, ON M5G 1M1, Canada.
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6
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Bhatti JS, Kaur S, Mishra J, Dibbanti H, Singh A, Reddy AP, Bhatti GK, Reddy PH. Targeting dynamin-related protein-1 as a potential therapeutic approach for mitochondrial dysfunction in Alzheimer's disease. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166798. [PMID: 37392948 DOI: 10.1016/j.bbadis.2023.166798] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/23/2023] [Accepted: 06/26/2023] [Indexed: 07/03/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease that manifests its pathology through synaptic damage, mitochondrial abnormalities, microRNA deregulation, hormonal imbalance, increased astrocytes & microglia, accumulation of amyloid β (Aβ) and phosphorylated Tau in the brains of AD patients. Despite extensive research, the effective treatment of AD is still unknown. Tau hyperphosphorylation and mitochondrial abnormalities are involved in the loss of synapses, defective axonal transport and cognitive decline in patients with AD. Mitochondrial dysfunction is evidenced by enhanced mitochondrial fragmentation, impaired mitochondrial dynamics, mitochondrial biogenesis and defective mitophagy in AD. Hence, targeting mitochondrial proteins might be a promising therapeutic strategy in treating AD. Recently, dynamin-related protein 1 (Drp1), a mitochondrial fission protein, has gained attention due to its interactions with Aβ and hyperphosphorylated Tau, altering mitochondrial morphology, dynamics, and bioenergetics. These interactions affect ATP production in mitochondria. A reduction in Drp1 GTPase activity protects against neurodegeneration in AD models. This article provides a comprehensive overview of Drp1's involvement in oxidative damage, apoptosis, mitophagy, and axonal transport of mitochondria. We also highlighted the interaction of Drp1 with Aβ and Tau, which may contribute to AD progression. In conclusion, targeting Drp1 could be a potential therapeutic approach for preventing AD pathology.
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Affiliation(s)
- Jasvinder Singh Bhatti
- Laboratory of Translational Medicine and Nanotherapeutics, Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, India.
| | - Satinder Kaur
- Laboratory of Translational Medicine and Nanotherapeutics, Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, India
| | - Jayapriya Mishra
- Laboratory of Translational Medicine and Nanotherapeutics, Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, India
| | | | - Arti Singh
- Department of Pharmaceutics, ISF College of Pharmacy, Moga, Punjab, India
| | - Arubala P Reddy
- Nutritional Sciences Department, College of Human Sciences, Texas Tech University, 1301 Akron Ave, Lubbock, TX 79409, USA.
| | - Gurjit Kaur Bhatti
- Department of Medical Lab Technology, University Institute of Applied Health Sciences, Chandigarh University, Mohali, India.
| | - P Hemachandra Reddy
- Nutritional Sciences Department, College of Human Sciences, Texas Tech University, 1301 Akron Ave, Lubbock, TX 79409, USA; Department of Internal Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Department of Public Health, Graduate School of Biomedical Sciences, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Department of Neurology, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Department of Speech, Language, and Hearing Sciences, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA.
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7
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Chen W, Chen X, Wang L, Yang R, Zhang W, Zhang S, Xia J, Cheng B, Wu T, Ren X. TIPE3 represses head and neck squamous cell carcinoma progression via triggering PGAM5 mediated mitochondria dysfunction. Cell Death Dis 2023; 14:251. [PMID: 37024453 PMCID: PMC10079926 DOI: 10.1038/s41419-023-05775-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 03/20/2023] [Accepted: 03/24/2023] [Indexed: 04/08/2023]
Abstract
Mitochondria are essential organelles in balancing oxidative stress and cell death during cancer cell proliferation. Rapid tumor growth induces tremendous stress on mitochondria. The mammalian tumor necrosis factor-α-induced protein 8-likes (TIPEs) family plays critical roles in balancing cancer cell death and survival. Yet, the roles of TIPEs in HNSCC tumorigenesis and mitochondria stress maintenance is unclear. Based on an integrative analysis of public HNSCC datasets, we identified that the downregulation of TIPE3 via its promoter hypermethylation modification is the major event of TIPEs alterations during HNSCC tumorigenesis. Low expression levels of TIPE3 were correlated with high malignancy and poor clinical outcomes of HNSCC patients. Restoring TIPE3 represses HNSCC proliferation, migration, and invasion in vitro and in vivo, while silencing TIPE3 acted on an opposite way. Mechanistically, TIPE3 band to the PGAM5 and electron transport chain (ETC) complex. Restoring TIPE3 promoted PGAM5 recruiting BAX and dephosphorylating p-DRP1(Ser637), which triggered mitochondrial outer membrane permeabilization and fragmentation. Ultimately, TIPE3 induced ETC damage and oxygen consumption rate decrease, ROS accumulation, mitochondrial membrane potential depolarization, and cell apoptosis. Collectively, our work reveals that TIPE3 plays critical role in maintaining mitochondrial stress and cancer cell progression in HNSCC, which might be a potential therapeutic target for HNSCC patients.
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Affiliation(s)
- Wei Chen
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
| | - Xijuan Chen
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
| | - Lixuan Wang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
| | - Rongchun Yang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
| | - Weilin Zhang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
| | - Siyuan Zhang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
| | - Juan Xia
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
| | - Bin Cheng
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China.
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, 510055, China.
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China.
| | - Tong Wu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China.
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, 510055, China.
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China.
| | - Xianyue Ren
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China.
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, 510055, China.
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China.
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8
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Meng L, Hu P, Xu A. PGAM5 promotes tumorigenesis of gastric cancer cells through PI3K/AKT pathway. Pathol Res Pract 2023; 244:154405. [PMID: 36889176 DOI: 10.1016/j.prp.2023.154405] [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: 10/24/2022] [Revised: 02/22/2023] [Accepted: 03/02/2023] [Indexed: 03/07/2023]
Abstract
PGAM5 has been associated with the development of tumours, however, its function in gastric cancer (GC) remains unexplored. Here, we investigated the role and mechanism of PGAM5 in regulating GC. The results revealed that PGAM5 was upregulated in GC tissues and cell lines, which was correlated with tumour size and TNM stage. Moreover, PGAM5 knockdown inhibited proliferation, migration, and invasion progression, whereas PGAM5 overexpression promoted the function of GC cells in vitro. PGAM5 also promoted the activation of the PI3K/AKT signalling pathway. Furthermore, MK-2206, an AKT inhibitor, reversed the proliferation and activation of the PI3K/AKT signalling pathway induced by PGAM5 knockdown in GC cells. In conclusion, PGAM5 promotes the proliferation of GC by positively regulating the activation of the PI3K/AKT signalling pathway in GC cells.
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Affiliation(s)
- Lei Meng
- Department of General Surgery, First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Pibo Hu
- Department of General Surgery, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, No. 1558, Sanhuan North Road, Huzhou, Zhejiang, China
| | - Aman Xu
- Department of General Surgery, First Affiliated Hospital of Anhui Medical University, Hefei 230022, China.
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9
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Chen X, Wei C, Huang L, Syrigos K, Li Y, Li P. Non-coding RNAs regulate mitochondrial dynamics in the development of gastric cancer. Front Mol Biosci 2023; 10:1107651. [PMID: 36714260 PMCID: PMC9877238 DOI: 10.3389/fmolb.2023.1107651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 01/03/2023] [Indexed: 01/15/2023] Open
Abstract
Gastric cancer (GC) is a malignant cancer that reduces life expectancy worldwide. Although treatment strategies have improved, patients with GC still have poor prognoses. Hence, it is necessary to understand the molecular mechanisms of GC and to find new therapeutic targets. Mitochondrial dynamics and mitochondrial dysfunction are associated with cancer cell growth and progression. Numerous studies have reported that non-coding RNAs (ncRNAs) can participate in the occurrence and development of GC by regulating mitochondrial dynamics. Elucidating the crosstalk between ncRNAs and mitochondria would be helpful in preventing and treating GC. Herein, we review and summarize the functions of oncogenes and tumor suppressors in suppressing ncRNAs and regulating mitochondrial dynamics in GC tumor growth, proliferation, invasion and metastasis. This review provides new insights into the pathogenesis of and intervention for GC.
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Affiliation(s)
- Xiatian Chen
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China,School of Basic Medicine, Qingdao University, Qingdao, China
| | - Chuang Wei
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China,School of Basic Medicine, Qingdao University, Qingdao, China
| | - Liting Huang
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China,School of Basic Medicine, Qingdao University, Qingdao, China
| | | | - Yuzhen Li
- Basic Medical Department, Graduate School, Chinese PLA General Hospital, Beijing, China,*Correspondence: Yuzhen Li, ; Peifeng Li,
| | - Peifeng Li
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China,*Correspondence: Yuzhen Li, ; Peifeng Li,
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10
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Qu K, Yan F, Qin X, Zhang K, He W, Dong M, Wu G. Mitochondrial dysfunction in vascular endothelial cells and its role in atherosclerosis. Front Physiol 2022; 13:1084604. [PMID: 36605901 PMCID: PMC9807884 DOI: 10.3389/fphys.2022.1084604] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 12/09/2022] [Indexed: 12/24/2022] Open
Abstract
The mitochondria are essential organelles that generate large amounts of ATP via the electron transport chain (ECT). Mitochondrial dysfunction causes reactive oxygen species accumulation, energy stress, and cell death. Endothelial mitochondrial dysfunction is an important factor causing abnormal function of the endothelium, which plays a central role during atherosclerosis development. Atherosclerosis-related risk factors, including high glucose levels, hypertension, ischemia, hypoxia, and diabetes, promote mitochondrial dysfunction in endothelial cells. This review summarizes the physiological and pathophysiological roles of endothelial mitochondria in endothelial function and atherosclerosis.
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Affiliation(s)
- Kai Qu
- Clinical Research Center for Endocrinology and Metabolic Diseases, Chongqing University Three Gorges Hospital, Chongqing, China,College of Bioengineering Chongqing University, Chongqing, China
| | - Fang Yan
- Department of Geriatrics, Geriatric Diseases Institute of Chengdu, Chengdu Fifth People’s Hospital, Chengdu, Sichuan, China,Center for Medicine Research and Translation, Chengdu Fifth People’s Hospital, Chengdu, Sichuan, China
| | - Xian Qin
- Clinical Research Center for Endocrinology and Metabolic Diseases, Chongqing University Three Gorges Hospital, Chongqing, China,College of Bioengineering Chongqing University, Chongqing, China
| | - Kun Zhang
- Clinical Research Center for Endocrinology and Metabolic Diseases, Chongqing University Three Gorges Hospital, Chongqing, China,College of Bioengineering Chongqing University, Chongqing, China
| | - Wen He
- Department of Geriatrics, Clinical trial center, Chengdu Fifth People’s Hospital, Chengdu, Sichuan, China
| | - Mingqing Dong
- Center for Medicine Research and Translation, Chengdu Fifth People’s Hospital, Chengdu, Sichuan, China,*Correspondence: Mingqing Dong, ; Guicheng Wu,
| | - Guicheng Wu
- Clinical Research Center for Endocrinology and Metabolic Diseases, Chongqing University Three Gorges Hospital, Chongqing, China,*Correspondence: Mingqing Dong, ; Guicheng Wu,
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11
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Wang L, Li Y, Hong F, Ning H. Circ_0062491 alleviates LPS-induced apoptosis and inflammation in periodontitis by regulating miR-498/SOCS6 axis. Innate Immun 2022; 28:174-184. [PMID: 35678490 PMCID: PMC9189554 DOI: 10.1177/17534259211072302] [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: 12/28/2022] Open
Abstract
Periodontitis is a prevalent chronic inflammatory disease. Circular RNAs (circRNAs) have been revealed to play roles in the inflammatory response. Hence, this work aimed to explore the role and mechanism of circ_0062491 in periodontitis progression. Human periodontal ligament cells (PDLCs) were isolated from the periodontal ligament (PDL) of the healthy teeth with orthodontic requirement after tooth extraction. In vitro experiments were conducted by cell counting Kit-8 (CCK-8) assay, flow cytometry, Western blot, and ELISA to determine cell viability, apoptosis, and inflammatory response. The binding between miR-498 and circ_0062491 or SOCS6 was confirmed using dual-luciferase reporter and RNA immunoprecipitation (RIP) assays. Circ_0062491 expression was decreased in periodontitis and LPS-induced PDLCs. Restoration of circ_0062491 attenuated LPS-induced apoptosis and inflammation in PDLCs in vitro. Mechanistically, circ_0062491 functioned as a sponge for miR-498, and miR-498 directly targeted SOCS6. Rescue experiments showed that miR-498 up-regulation reversed the protective action of circ_0062491 on PDLCs under LPS treatment. Moreover, silencing of miR-498 protected PDLCs from LPS-induced apoptosis and inflammation, which were abolished by SOCS6 knockdown. Circ_0062491 protected PDLCs from LPS-induced apoptosis and inflammation, suggesting a new target for the amelioration of periodontitis patients.
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Affiliation(s)
- Lie Wang
- Department of Stomatology, Affiliated Puren Hospital of Wuhan University of Science and Technology, Benxi Street, Qingshan District, Wuhan City, 430081, China
| | - Yanli Li
- Department of stomatology, Sanya Central Hospital, Hainan, China
| | - Feifei Hong
- Stomatological Hospital of Xiamen Medical College, Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen, China
| | - Haiyan Ning
- Department of Stomatology, the Fourth People's Hospital of Haikou City, Haikou, China
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12
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Kabwe M, Dashper S, Tucci J. The Microbiome in Pancreatic Cancer-Implications for Diagnosis and Precision Bacteriophage Therapy for This Low Survival Disease. Front Cell Infect Microbiol 2022; 12:871293. [PMID: 35663462 PMCID: PMC9160434 DOI: 10.3389/fcimb.2022.871293] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
While the mortality rates for many cancers have decreased due to improved detection and treatments, that of pancreatic cancer remains stubbornly high. The microbiome is an important factor in the progression of many cancers. Greater understanding of the microbiome in pancreatic cancer patients, as well as its manipulation, may assist in diagnosis and treatment of this disease. In this report we reviewed studies that compared microbiome changes in pancreatic cancer patients and non-cancer patients. We then identified which bacterial genera were most increased in relative abundance across the oral, pancreatic, duodenal, and faecal tissue microbiomes. In light of these findings, we discuss the potential for utilising these bacteria as diagnostic biomarkers, as well as their potential control using precision targeting with bacteriophages, in instances where a causal oncogenic link is made.
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Affiliation(s)
- Mwila Kabwe
- Department of Rural Clinical Sciences, La Trobe Rural Health School, La Trobe University, Bendigo, VIC, Australia
- La Trobe Institute for Molecular Science, La Trobe University, Bendigo, VIC, Australia
| | - Stuart Dashper
- Melbourne Dental School, University of Melbourne, Melbourne, VIC, Australia
| | - Joseph Tucci
- Department of Rural Clinical Sciences, La Trobe Rural Health School, La Trobe University, Bendigo, VIC, Australia
- La Trobe Institute for Molecular Science, La Trobe University, Bendigo, VIC, Australia
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13
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Zhi Y, Huang S, Lina Z. Suppressor of Cytokine Signaling 6 in cancer development and therapy: deciphering its emerging and suppressive roles. Cytokine Growth Factor Rev 2022; 64:21-32. [DOI: 10.1016/j.cytogfr.2022.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 02/07/2022] [Indexed: 12/16/2022]
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14
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SOCS6 Promotes Mitochondrial Fission and Cardiomyocyte Apoptosis and Is Negatively Regulated by Quaking-Mediated miR-19b. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1121323. [PMID: 35126805 PMCID: PMC8813278 DOI: 10.1155/2022/1121323] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 10/15/2021] [Accepted: 11/02/2021] [Indexed: 11/18/2022]
Abstract
Background. Mitochondrial dysfunction and abnormal mitochondrial fission have been implicated in the complications associated with I/R injury as cardiomyocytes are abundant in mitochondria. SOCS6 is known to participate in mitochondrial fragmentation, but its exact involvement and the pathways associated are uncertain. Methods and Results. The expression of SOCS6 was analyzed by western blot in cardiomyocytes under a hypoxia and reoxygenation (H/R) model. A dual-luciferase reporter assay was used to confirm the direct interaction between miR-19b and the 3
-UTR of Socs6. In the present study, we found that Socs6 inhibition by RNA interference attenuated H/R-induced mitochondrial fission and apoptosis in cardiomyocytes. A luciferase assay indicated that Socs6 is a direct target of miR-19b. The overexpression of miR-19b decreased mitochondrial fission and apoptosis in vitro. Moreover, the presence of miR-19b reduced the level of SOCS6 and the injury caused by I/R in vivo. There were less apoptotic cells in the myocardium of mice injected with miR-19b. In addition, we found that the RNA-binding protein, Quaking (QK), participates in the regulation of miR-19b expression. Conclusions. Our results indicate that the inhibition of mitochondrial fission through downregulating Socs6 via the QK/miR-19b/Socs6 pathway attenuated the damage sustained by I/R. The QK/miR-19b/Socs6 axis plays a vital role in regulation of mitochondrial fission and cardiomyocyte apoptosis and could form the basis of future research in the development of therapies for the management of cardiac diseases.
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15
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Du W, Wang L, Liao Z, Wang J. Circ_0085289 Alleviates the Progression of Periodontitis by Regulating let-7f-5p/SOCS6 Pathway. Inflammation 2021; 44:1607-1619. [PMID: 33710445 DOI: 10.1007/s10753-021-01445-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 02/19/2021] [Accepted: 03/01/2021] [Indexed: 10/21/2022]
Abstract
Periodontitis is a common chronic inflammation that often occurs in adults. Circular RNAs (circRNAs) play a vital role in inflammation-related diseases. However, the role and potential basis of hsa_circ_0085289 in periodontitis remain unknown. Periodontal ligament cells (PDLCs) were exposed to lipopolysaccharide (LPS) to mimic periodontitis. The levels of circ_0085289, let-7f-5p, and suppressor of cytokine signaling 6 (SOCS6) were determined using qRT-PCR and western blot. The release of inflammatory cytokines was measured via enzyme-linked immunosorbent assay (ELISA). Cell viability and apoptosis were determined using Cell Counting Kit-8, flow cytometry, Caspase-3 Assay Kit, and western blot assays. The association between let-7f-5p and circ_0085289/SOCS6 was validated via dual-luciferase reporter, RNA pull-down, and RIP assays. Circ_0085289 and SOCS6 levels were reduced, and let-7f-5p level was increased in periodontitis patients and LPS-treated PDLCs. LPS stimulation caused PDLC injury and circ_0085289 downregulation. Moreover, circ_0085289 upregulation or let-7f-5p downregulation diminished LPS-triggered PDLC injury. Besides, circ_0085289 promoted SOCS6 expression by absorbing let-7f-5p. Circ_0085289 alleviated LPS-stimulated PDLC injury via targeting let-7f-5p. Moreover, let-7f-5p targeted SOCS6 to affect LPS-resulted PDLC injury. Circ_0085289 alleviated PDLC injury induced by LPS stimulation via modulating let-7f-5p/SOCS6 axis, suggesting a promising biomarker for periodontitis treatment.
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Affiliation(s)
- Wenwen Du
- Department of Stomatology, The Ninth People's Hospital of Chongqing, Chongqing, 400700, China.
| | - Li Wang
- Department of Oral Implantology, Stomatological Hospital of Chongqing Medical University, Chongqing, 401147, China
| | - Zhen Liao
- Department of Stomatology, The Ninth People's Hospital of Chongqing, Chongqing, 400700, China
| | - Juan Wang
- Department of Stomatology, The Ninth People's Hospital of Chongqing, Chongqing, 400700, China
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16
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Li Z, Fan H, Chen W, Xiao J, Ma X, Ni P, Xu Z, Yang L. MicroRNA-653-5p Promotes Gastric Cancer Proliferation and Metastasis by Targeting the SOCS6-STAT3 Pathway. Front Mol Biosci 2021; 8:655580. [PMID: 33937336 PMCID: PMC8082248 DOI: 10.3389/fmolb.2021.655580] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 03/24/2021] [Indexed: 11/23/2022] Open
Abstract
MicroRNAs (miRNAs) are emerging as significant regulators of the tumorigenesis of gastric cancer (GC), and may be effective biomarkers for diagnosis, prognosis, and therapeutic targeting for GC. In this study, miR-653-5p was found to be significantly upregulated in GC tissues, serum, and cell lines and was strongly associated with poor prognosis in patients with GC. Furthermore, miR-653-5p promoted GC cell proliferation and metastasis in vivo and in vitro. Suppressor of cytokine signaling 6 (SOCS6) was directly targeted by miR-653-5p, and SOCS6 attenuated miR-653-5p-mediated GC cell growth, migration, and invasion. In addition, SOCS6-mediated inactivation of the Janus kinase 2/signal transducer and activator of transcription 3 (JAK2/STAT3) signaling pathway was also reversed by the administration of miR-653-5p. The findings from this study support a novel regulatory axis between miR-653-5p, SOCS6, and JAK2/STAT3 that may be a target for diagnosis and therapeutic intervention for GC.
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Affiliation(s)
- Zengliang Li
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hao Fan
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wangwang Chen
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jian Xiao
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiang Ma
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Peidong Ni
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zekuan Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Li Yang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Department of General Surgery, Liyang People's Hospital, Liyang Branch Hospital of Jiangsu Province Hospital, Liyang, China
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17
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Singh K, Chen YC, Hassanzadeh S, Han K, Judy JT, Seifuddin F, Tunc I, Sack MN, Pirooznia M. Network Analysis and Transcriptome Profiling Identify Autophagic and Mitochondrial Dysfunctions in SARS-CoV-2 Infection. Front Genet 2021; 12:599261. [PMID: 33796130 PMCID: PMC8008150 DOI: 10.3389/fgene.2021.599261] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 02/15/2021] [Indexed: 01/08/2023] Open
Abstract
Analyzing host cells' transcriptional response to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection will help delineate biological processes underlying viral pathogenesis. First, analysis of expression profiles of lung cell lines A549 and Calu3 revealed upregulation of antiviral interferon signaling genes in response to all three SARS-CoV-2, MERS-CoV, or influenza A virus (IAV) infections. However, perturbations in expression of genes involved in inflammatory, mitochondrial, and autophagy processes were specifically observed in SARS-CoV-2-infected cells. Next, a validation study in infected human nasopharyngeal samples also revealed perturbations in autophagy and mitochondrial processes. Specifically, mTOR expression, mitochondrial ribosomal, mitochondrial complex I, lysosome acidification, and mitochondrial fission promoting genes were concurrently downregulated in both infected cell lines and human samples. SARS-CoV-2 infection impeded autophagic flux either by upregulating GSK3B in lung cell lines or by downregulating autophagy genes, SNAP29, and lysosome acidification genes in human samples, contributing to increased viral replication. Therefore, drugs targeting lysosome acidification or autophagic flux could be tested as intervention strategies. Finally, age-stratified SARS-CoV-2-positive human data revealed impaired upregulation of chemokines, interferon-stimulated genes, and tripartite motif genes that are critical for antiviral signaling. Together, this analysis has revealed specific aspects of autophagic and mitochondrial function that are uniquely perturbed in SARS-CoV-2-infected host cells.
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Affiliation(s)
- Komudi Singh
- Bioinformatics and Computational Biology Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States
| | - Yun-Ching Chen
- Bioinformatics and Computational Biology Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States
| | - Shahin Hassanzadeh
- Laboratory of Mitochondrial Biology and Metabolism, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States
| | - Kim Han
- Laboratory of Mitochondrial Biology and Metabolism, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States
| | - Jennifer T. Judy
- Bioinformatics and Computational Biology Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States
| | - Fayaz Seifuddin
- Bioinformatics and Computational Biology Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States
| | - Ilker Tunc
- Bioinformatics and Computational Biology Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States
| | - Michael N. Sack
- Laboratory of Mitochondrial Biology and Metabolism, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States
| | - Mehdi Pirooznia
- Bioinformatics and Computational Biology Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States
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18
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Sun X, Sun Y, Li J, Zhao X, Shi X, Gong T, Pan S, Zheng Z, Zhang X. SOCS6 promotes radiosensitivity and decreases cancer cell stemness in esophageal squamous cell carcinoma by regulating c-Kit ubiquitylation. Cancer Cell Int 2021; 21:165. [PMID: 33712005 PMCID: PMC7953756 DOI: 10.1186/s12935-021-01859-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 03/01/2021] [Indexed: 02/07/2023] Open
Abstract
Background Radiotherapy is a major treatment for esophageal squamous cell carcinoma (ESCC). However, HPV infection related radioresistance caused poor prognosis of ESCC. The function of SOCS6, which has been shown to be a tumor suppressor in several cancers, has not been fully investigated up till now. In this manuscript, we aim to further investigate the role of SOCS6 in regulating ESCC radioresistance. Methods Fifty-seven ESCC patients were enrolled for survival analysis. SOCS6 was stably overexpressed in HPV+ ESCC and ESCC cells, and cells were treated with radiation and then subjected to colony formation assays. Expression of DNA damage repair regulating proteins were examined by Western blotting. Cell growth, cell migration and cisplatin sensitivity were then analyzed. Sphere formation assays and flow cytometry were used to investigate changes in cancer stem cell (CSC) properties. Immunofluorescent staining and confocal microscopy were used to locate SOCS6 and c-Kit. Ubiquitylation level of c-Kit were analyzed after immunoprecipitation. Then, coimmunoprecipitation (CoIP) of SOCS6 and c-Kit were performed. In vivo, xenograft animal models were treated with radiation to examine the radiosensitivity. Results SOCS6 is correlated with better prognosis in ESCC patients. Radioresistance is impaired by SOCS6 upregulation, which inhibited cell growth, migration and increased sensitivity to cisplatin. SOCS6 significantly decreased the population of CSCs expressing the surface biomarker CD271 or CD24low/CD44high and their ability of sphere formation. SOCS6 and c-Kit were collocated in the cytoplasm. Blotting of ubiquitin and CoIP experiments indicated that the mechanism was related to ubiquitylation and degradation of the receptor c-Kit. Xenograft tumor mouse model showed that SOCS6 inhibited tumor growth and promoted radiosensitivity in vivo. Conclusions Our findings suggest that SOCS6 can promote the radiosensitivity of HPV+ ESCC and ESCC cells and reduce their stemness via ubiquitylation and degradation of c-Kit. Thus, SOCS6 is a potential target for overcoming radioresistance of ESCC. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-021-01859-2.
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Affiliation(s)
- Xuanzi Sun
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277, Yanta West Road, Xi'an, 710061, Shaanxi, China
| | - Yuchen Sun
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277, Yanta West Road, Xi'an, 710061, Shaanxi, China
| | - Jing Li
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277, Yanta West Road, Xi'an, 710061, Shaanxi, China
| | - Xu Zhao
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277, Yanta West Road, Xi'an, 710061, Shaanxi, China
| | - Xiaobo Shi
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277, Yanta West Road, Xi'an, 710061, Shaanxi, China
| | - Tuotuo Gong
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277, Yanta West Road, Xi'an, 710061, Shaanxi, China
| | - Shupei Pan
- Department of Radiation Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Zhongqiang Zheng
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Xiaozhi Zhang
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277, Yanta West Road, Xi'an, 710061, Shaanxi, China.
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19
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Inhibition of SOCS6 confers radioresistance in esophageal squamous cell carcinoma. Biochem Biophys Res Commun 2021; 550:92-98. [PMID: 33689885 DOI: 10.1016/j.bbrc.2021.02.105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 02/22/2021] [Indexed: 12/14/2022]
Abstract
Esophageal cancer is one of the most common cancer of the digestive system and radiotherapy is widely applied in advanced esophageal cancer treatment, however radioresistance (RR) is one of the major reasons for radiotherapy failure. There is limited knowledge on the mechanisms that cause RR, here we identify suppressors of cytokine signaling 6 (SOCS6) is a negative regulator of radioresistance in ESCC cells. SOCS6 deficiency in ESCC cells conferred radioresistance in vitro and in vivo by increasing radiation-induced G2/M arrest, DNA damage repair and inhibiting radiation-induced apoptosis. Moreover, the transcriptome sequencing analysis demonstrates that the transcription of SOCS6 was partially p53-dependent. Importantly we found that highly correlated SOCS6 and P53 express lower in RR esophageal cancer tissues compare with radiosensitive ones. Collectedly our study uncovers that SOCS6, as a downstream effector of p53, is a key regulator involved in the radioresistance of ESCC.
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20
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Wahyuningsih KA, Karina K, Rosadi I, Rosliana I, Subroto WR. Effect of ascorbic acid on morphology of post-thawed human adipose-derived stem cells. Stem Cell Investig 2020; 7:16. [PMID: 33110914 DOI: 10.21037/sci-2020-011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 08/13/2020] [Indexed: 12/17/2022]
Abstract
Background Ascorbic acid-2-phosphate has been reported to play a role in cell division and to suppress aging of cell. However, post-thawed cell morphology on various concentration of ascorbic acid is still unclear. In this study, we aimed to observe the morphology of post-thawed adipose-derived stem cells (ADSCs) in medium containing L-ascorbic acid-2-phosphate (LAA2P) (50 and 100 µg/mL). Methods The cells were isolated from adipose tissue. Isolated cells then cultured and cryopreserved in liquid nitrogen. We detected mRNA expression of type 1 collagen on day 5. Cell seeded in T25 flask using basal medium [Dulbecco's modified Eagle's medium (DMEM) only] as a control group, DMEM with 10% fetal bovine serum (FBS) and antibiotics as DMFA group, while DMFA with ascorbic acid (50 and 100 µg/mL) as ascorbic acid treatment group. Results The results showed that the cells cultured in DMEM only attached until 96 hours of observation while serum groups with or without ascorbic acid supplementation showed the proliferation until 240 hours of observation. The highest spread size of cell was in a serum group without ascorbic acid supplementation and the highest yield of cells showed in a group with 50 µg/mL of ascorbic acid supplementation. Reduced mRNA expression of type 1 collagen which related to aging was showed in cells cultured without ascorbic acid supplementation. Conclusions These results showed that ascorbic acid increased the cell division and suppressed the aging processes indicated by normal spread cell in size compared to cell cultured in DMFA without ascorbic acid supplementation.
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Affiliation(s)
- Komang Ardi Wahyuningsih
- Department of Histology, Universitas Katolik Indonesia Atma Jaya, Jakarta, Indonesia.,Klinik Hayandra, Yayasan Hayandra Peduli, Jakarta, Indonesia.,Hayandra Lab, Yayasan Hayandra Peduli, Jakarta, Indonesia
| | - Karina Karina
- Klinik Hayandra, Yayasan Hayandra Peduli, Jakarta, Indonesia.,Hayandra Lab, Yayasan Hayandra Peduli, Jakarta, Indonesia
| | - Imam Rosadi
- Hayandra Lab, Yayasan Hayandra Peduli, Jakarta, Indonesia
| | - Iis Rosliana
- Hayandra Lab, Yayasan Hayandra Peduli, Jakarta, Indonesia
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21
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Singh K, Chen YC, Judy JT, Seifuddin F, Tunc I, Pirooznia M. Network Analysis and Transcriptome Profiling Identify Autophagic and Mitochondrial Dysfunctions in SARS-CoV-2 Infection. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2020:2020.05.13.092536. [PMID: 32511341 PMCID: PMC7241104 DOI: 10.1101/2020.05.13.092536] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
Abstract
Analyzing host transcriptional changes in response to SARS-CoV-2 infection will help delineate biological processes underlying viral pathogenesis. Comparison of expression profiles of lung cell lines A549 (infected with either SARS-CoV-2 (with ACE2 expression)) or Influenza A virus (IAV)) and Calu3 (infected with SARS-CoV-2 or MERS-CoV) revealed upregulation of the antiviral interferon signaling in all three viral infections. However, perturbations in inflammatory, mitochondrial, and autophagy processes were specifically observed in SARS-CoV-2 infected cells. Validation of findings from cell line data revealed perturbations in autophagy and mitochondrial processes in the infected human nasopharyngeal samples. Specifically, downregulation of mTOR expression, mitochondrial ribosomal, mitochondrial complex I, and lysosome acidification genes were concurrently observed in both infected cell lines and human datasets. Furthermore, SARS-CoV-2 infection impedes autophagic flux by upregulating GSK3B in lung cell lines, or by downregulating autophagy genes, SNAP29 and lysosome acidification genes in human samples, contributing to increased viral replication. Therefore, drugs targeting lysosome acidification or autophagic flux could be tested as intervention strategies. Additionally, downregulation of MTFP1 (in cell lines) or SOCS6 (in human samples) results in hyperfused mitochondria and impede proper interferon response. Coexpression networks analysis identifies correlated clusters of genes annotated to inflammation and mitochondrial processes that are misregulated in SARS-CoV-2 infected cells. Finally, comparison of age stratified human gene expression data revealed impaired upregulation of chemokines, interferon stimulated and tripartite motif genes that are critical for antiviral signaling. Together, this analysis has revealed specific aspects of autophagic and mitochondrial function that are uniquely perturbed in SARS-CoV-2 infection.
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Affiliation(s)
- Komudi Singh
- Bioinformatics and Computational Biology Laboratory, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Yun-Ching Chen
- Bioinformatics and Computational Biology Laboratory, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jennifer T Judy
- Bioinformatics and Computational Biology Laboratory, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Fayaz Seifuddin
- Bioinformatics and Computational Biology Laboratory, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ilker Tunc
- Bioinformatics and Computational Biology Laboratory, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Mehdi Pirooznia
- Bioinformatics and Computational Biology Laboratory, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
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22
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Shah SWA, Chen J, Han Q, Xu Y, Ishfaq M, Teng X. Ammonia inhalation impaired immune function and mitochondrial integrity in the broilers bursa of fabricius: Implication of oxidative stress and apoptosis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 190:110078. [PMID: 31841897 DOI: 10.1016/j.ecoenv.2019.110078] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 11/29/2019] [Accepted: 12/09/2019] [Indexed: 06/10/2023]
Abstract
Ammonia (NH3) is considered as environmental pollutant and toxic agent for animals and humans including poultry. Previous reports demonstrated that NH3 suppressed broilers immunity. However, the harmful effects of NH3 on broilers bursa of fabricius (BF) is still unknown. Functionally, apoptosis is very important for many physiological processes including homeostasis of lymphocyte population. Therefore, the present study was aimed to investigate the underlying mechanisms of NH3 toxicity in the broilers BF. Histological observation showed lymphocyte accumulation, cavities and increased interstitial cells in BF. Ultrastructural observation indicated mitochondrial vacuoles, deformation and disappearance of mitochondrial membranes. Oxidative stress markers (CAT, MDA, H2O2, GGT, GSH-Px and GSH) showed that NH3-induced oxidative stress in BF. Meanwhile, Terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assay revealed increased apoptotic cells. In addition, the mRNA and protein expression of dynamin-related protein 1 (Drp1), mitochondrial fission factor (Mff), mitofusin 1 and 2 (Mfn1 and Mfn2), optic atrophy 1 (Opa1) indicated imbalance between mitochondrial inner and outer membrane and results in mitochondrial dysfunction in broilers BF. The mRNA and protein expression of apoptosis-related genes including Caspase-3, Caspase-9, Caspase-8, Cytochrome-C (Cyt-C), p53, B-cell lymphoma 2 (Bcl-2) and Bcl-2 associated X protein (Bax) were significantly altered in broilers BF. Conclusively, these results displayed that excessive NH3 causes BF damage and mitochondrial dysfunction through oxidative stress and apoptosis in BF and could affect immune function of BF. These findings provide possible therapeutic targets to prevent NH3 induced toxicity in the BF of broilers.
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Affiliation(s)
- Syed Waqas Ali Shah
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Jianqing Chen
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Qi Han
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Yanmin Xu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Muhammad Ishfaq
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, 600 Chang jiang Road, Xiang fang District, Harbin, 150030, People's Republic of China
| | - Xiaohua Teng
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
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23
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Ju J, Hou R, Zhang P. D-allose alleviates ischemia/reperfusion (I/R) injury in skin flap via MKP-1. Mol Med 2020; 26:21. [PMID: 32046628 PMCID: PMC7014625 DOI: 10.1186/s10020-020-0138-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 01/16/2020] [Indexed: 11/10/2022] Open
Abstract
Background D-allose was promising in the protection of ischemia/reperfusion (I/R) injury. We intended to investigate the function of D-allose in skin flap of rat followed by the injury of I/R and whether ERK signal pathway was involved in. Methods The back flap of Wistar rats was picked up with a vascular bundle of the lateral chest wall. I/R model was made by the venous clamp for 6 h. Rats received D-allose and PD-98059, the inhibitor of ERK1/2, 30 min before modeling. Morphology of tissue was observed by HE staining. Nitric oxide (NO), myeloperoxidase (MPO), malondialdehyde (MDA) and superoxide dismutase (SOD) levels in skin flap were determined by ELISA kits. mRNA and protein levels were determined by qPCR and Western blot respectively. Results D-allose alleviated the condition of pathological changes and raised the survival rate of skin flap injured by I/R. Moreover, D-allose suppressed NO, MPO and MDA while elevated SOD levels during I/R status. Furthermore, D-allose decreased MCP-1, TNF-α, IL-1β and IL-6 levels in skin flap injured by I/R. In addition, D-allose inhibited MKP-1 expression and activated ERK1/2 pathway in skin flap injured by I/R. PD-98059 partially counteracted D-allose effects on I/R injury. Conclusions D-allose exerted its protective function via inhibiting MKP-1expression and further activated ERK1/2 pathway to suppress the progress of oxidative stress, inflammation and necrosis, contributing to the survival of skin flap injured by I/R. Thus, D-allose was promising in the transplantation of skin flap.
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Affiliation(s)
- Jihui Ju
- Department of Hand Surgery, Ruihua Affiliated Hospital of Soochow University, No. 5, Tayun Road, Suzhou, 215104, Jiangsu, China
| | - Ruixing Hou
- Department of Hand Surgery, Ruihua Affiliated Hospital of Soochow University, No. 5, Tayun Road, Suzhou, 215104, Jiangsu, China.
| | - Ping Zhang
- Department of Hand Surgery, Ruihua Affiliated Hospital of Soochow University, No. 5, Tayun Road, Suzhou, 215104, Jiangsu, China
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24
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Wang S, Chi Q, Hu X, Cong Y, Li S. Hydrogen sulfide-induced oxidative stress leads to excessive mitochondrial fission to activate apoptosis in broiler myocardia. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 183:109578. [PMID: 31442807 DOI: 10.1016/j.ecoenv.2019.109578] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 08/09/2019] [Accepted: 08/14/2019] [Indexed: 06/10/2023]
Abstract
Hydrogen sulfide (H2S), as an environmental gas pollutant, has harmful effects on many tissues and organs, including myocardium. However, the underlying mechanisms of H2S-induced myocardia toxicity remain poorly understood. The present study was designed to investigate the effect of H2S on myocardia injury in broilers from the perspective of apoptosis. 30 ppm H2S was administered in the broiler chamber for 2, 4 and 6 week, respectively, and the myocardial samples in control groups and H2S groups were collected immediately after euthanized broilers. Transmission electron microscope, test kits, qRT-PCR and western blot were performed. Results showed that H2S exposure decreased the activities of catalase (CAT) and total antioxidant capability (T-AOC), whereas the content of hydrogen peroxide (H2O2) and the activity of inducible nitric oxide synthase (iNOS) enhanced. Besides, we found the excessive expression of mitochondrial fission genes (Drp1 and Mff) by H2S, the dynamic balance of mitochondrial fission and fusion is destroyed. Furthermore, the levels of pro-apoptotic gene (including CytC, Cas3, Cas8, Cas9, TNF-α and Bax) increased after H2S exposure, as well as the expression level of anti-apoptotic gene bcl-2 decreased. At the same time, the activities of ATPase (including Na+-K+-ATPase, Ca2+-ATPase, Mg2+-ATPase and Ca2+-Mg2+-ATPase) weakened under H2S exposure. Therefore, we conclude that H2S induced oxidative stress and then leaded to excessive mitochondrial fission, which involved in apoptosis and damage broiler myocardia.
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Affiliation(s)
- Shuang Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Qianru Chi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Xueyuan Hu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Yimei Cong
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China; Heilingjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin, 150030, PR China.
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25
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Amanpour P, Khodarahmi P, Salehipour M. Protective effects of vitamin E on cadmium-induced apoptosis in rat testes. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2019; 393:349-358. [DOI: 10.1007/s00210-019-01736-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 09/20/2019] [Indexed: 11/28/2022]
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26
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Rose KN, Barlock BJ, DaSilva NA, Johnson SL, Liu C, Ma H, Nelson R, Akhlaghi F, Seeram NP. Anti-neuroinflammatory effects of a food-grade phenolic-enriched maple syrup extract in a mouse model of Alzheimer’s disease. Nutr Neurosci 2019; 24:710-719. [DOI: 10.1080/1028415x.2019.1672009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Kenneth N. Rose
- Bioactive Botanical Research Laboratory, Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, USA
- George & Anne Ryan Institute for Neuroscience, University of Rhode Island, Kingston, RI, USA
| | - Benjamin J. Barlock
- Clinical Pharmacokinetics Research Laboratory, Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, RI, USA
| | - Nicholas A. DaSilva
- Bioactive Botanical Research Laboratory, Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, USA
| | - Shelby L. Johnson
- Bioactive Botanical Research Laboratory, Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, USA
- George & Anne Ryan Institute for Neuroscience, University of Rhode Island, Kingston, RI, USA
| | - Chang Liu
- Bioactive Botanical Research Laboratory, Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, USA
| | - Hang Ma
- Bioactive Botanical Research Laboratory, Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, USA
- George & Anne Ryan Institute for Neuroscience, University of Rhode Island, Kingston, RI, USA
| | - Robert Nelson
- George & Anne Ryan Institute for Neuroscience, University of Rhode Island, Kingston, RI, USA
| | - Fatemeh Akhlaghi
- Clinical Pharmacokinetics Research Laboratory, Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, RI, USA
| | - Navindra P. Seeram
- Bioactive Botanical Research Laboratory, Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, USA
- George & Anne Ryan Institute for Neuroscience, University of Rhode Island, Kingston, RI, USA
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27
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Zhou Q, Li H, Li Y, Tan M, Fan S, Cao C, Meng F, Zhu L, Zhao L, Guan MX, Jin H, Sun Y. Inhibiting neddylation modification alters mitochondrial morphology and reprograms energy metabolism in cancer cells. JCI Insight 2019; 4:121582. [PMID: 30668548 DOI: 10.1172/jci.insight.121582] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 01/16/2019] [Indexed: 12/17/2022] Open
Abstract
Abnormal activation of neddylation modification and dysregulated energy metabolism are frequently seen in many types of cancer cells. Whether and how neddylation modification affects cellular metabolism remains largely unknown. Here, we showed that MLN4924, a small-molecule inhibitor of neddylation modification, induces mitochondrial fission-to-fusion conversion in breast cancer cells via inhibiting ubiquitylation and degradation of fusion-promoting protein mitofusin 1 (MFN1) by SCFβ-TrCP E3 ligase and blocking the mitochondrial translocation of fusion-inhibiting protein DRP1. Importantly, MLN4924-induced mitochondrial fusion is independent of cell cycle progression, but confers cellular survival. Mass-spectrometry-based metabolic profiling and mitochondrial functional assays reveal that MLN4924 inhibits the TCA cycle but promotes mitochondrial OXPHOS. MLN4924 also increases glycolysis by activating PKM2 via promoting its tetramerization. Biologically, MLN4924 coupled with the OXPHOS inhibitor metformin, or the glycolysis inhibitor shikonin, significantly inhibits cancer cell growth both in vitro and in vivo. Together, our study links neddylation modification and energy metabolism, and provides sound strategies for effective combined cancer therapies.
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Affiliation(s)
- Qiyin Zhou
- Cancer Institute of the Second Affiliated Hospital and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang, Sir RunRun Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Hua Li
- Division of Radiation and Cancer Biology, Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan, USA
| | - Yuanyuan Li
- Cancer Institute of the Second Affiliated Hospital and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Mingjia Tan
- Division of Radiation and Cancer Biology, Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan, USA
| | - Shaohua Fan
- Division of Radiation and Cancer Biology, Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan, USA
| | - Cong Cao
- Institute of Genetics, Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Feilong Meng
- Institute of Genetics, Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Ling Zhu
- Institute of Genetics, Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Lili Zhao
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan, USA
| | - Min-Xin Guan
- Institute of Genetics, Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Hongchuan Jin
- Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang, Sir RunRun Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yi Sun
- Cancer Institute of the Second Affiliated Hospital and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Division of Radiation and Cancer Biology, Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan, USA
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28
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miR-1260b, mediated by YY1, activates KIT signaling by targeting SOCS6 to regulate cell proliferation and apoptosis in NSCLC. Cell Death Dis 2019; 10:112. [PMID: 30737371 PMCID: PMC6368632 DOI: 10.1038/s41419-019-1390-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 01/03/2019] [Accepted: 01/21/2019] [Indexed: 01/16/2023]
Abstract
Non-small cell lung cancer (NSCLC) is one of the most common aggressive malignancies. miRNAs have been identified as important biomarkers and regulators of NSCLC. However, the functional contributions of miR-1260b to NSCLC cell proliferation and apoptosis have not been studied. In this study, miR-1260b was upregulated in NSCLC plasma, tissues, and cell lines, and its high expression was correlated with tumor size and progression. Functionally, miR-1260b overexpression promoted cell proliferation and cell cycle, conversely inhibited cell apoptosis and senescence. Mechanically, miR-1260b negatively regulated SOCS6 by directly binding to its 3′-UTR. Furthermore, miR-1260b-mediated suppression of SOCS6 activated KIT signaling. Moreover, YY1 was an upstream regulator of miR-1260b. This study is the first to illustrate that miR-1260b, mediated by YY1, activates KIT signaling by targeting SOCS6 to regulate NSCLC cell proliferation and apoptosis, and is a potential biomarker and therapeutic target for NSCLC. In sum, our work provides new insights into the molecular mechanisms of NSCLC involved in cell proliferation and apoptosis.
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29
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Olsen I, Yilmaz Ö. Possible role of Porphyromonas gingivalis in orodigestive cancers. J Oral Microbiol 2019; 11:1563410. [PMID: 30671195 PMCID: PMC6327928 DOI: 10.1080/20002297.2018.1563410] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 12/11/2018] [Accepted: 12/15/2018] [Indexed: 02/07/2023] Open
Abstract
There is increasing evidence for an association between periodontitis/tooth loss and oral, gastrointestinal, and pancreatic cancers. Periodontal disease, which is characterized by chronic inflammation and microbial dysbiosis, is a significant risk factor for orodigestive carcinogenesis. Porphyromonas gingivalis is proposed as a keystone pathogen in chronic periodontitis causing both dysbiosis and discordant immune response. The present review focuses on the growing recognition of a relationship between P. gingivalis and orodigestive cancers. Porphyromonas gingivalis has been recovered in abundance from oral squamous cell carcinoma (OSCC). Recently established tumorigenesis models have indicated a direct relationship between P. gingivalis and carcinogenesis. The bacterium upregulates specific receptors on OSCC cells and keratinocytes, induces epithelial-to-mesenchymal (EMT) transition of normal oral epithelial cells and activates metalloproteinase-9 and interleukin-8 in cultures of the carcinoma cells. In addition, P. gingivalis accelerates cell cycling and suppresses apoptosis in cultures of primary oral epithelial cells. In oral cancer cells, the cell cycle is arrested and there is no effect on apoptosis, but macro autophagy is increased. Porphyromonas gingivalis promotes distant metastasis and chemoresistance to anti-cancer agents and accelerates proliferation of oral tumor cells by affecting gene expression of defensins, by peptidyl-arginine deiminase and noncanonical activation of β-catenin. The pathogen also converts ethanol to the carcinogenic intermediate acetaldehyde. In addition, P. gingivalis can be implicated in precancerous gastric and colon lesions, esophageal squamous cell carcinoma, head and neck (larynx, throat, lip, mouth and salivary glands) carcinoma, and pancreatic cancer. The fact that distant organs can be involved clearly emphasizes that P. gingivalis has systemic tumorigenic effects in addition to the local effects in its native territory, the oral cavity. Although coinfection with other bacteria, viruses, and fungi occurs in periodontitis, P. gingivalis relates to cancer even in absence of periodontitis. Thus, there may be a direct relationship between P. gingivalis and orodigestive cancers.
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Affiliation(s)
- Ingar Olsen
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Özlem Yilmaz
- Department of Oral Health Sciences, Medical University of South Carolina, Charleston, SC, USA
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30
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Cheng J, Qian D, Ding X, Song T, Cai M, Dan Xie, Wang Y, Zhao J, Liu Z, Wu Z, Pang Q, Zhu L, Wang P, Hao X, Yuan Z. High PGAM5 expression induces chemoresistance by enhancing Bcl-xL-mediated anti-apoptotic signaling and predicts poor prognosis in hepatocellular carcinoma patients. Cell Death Dis 2018; 9:991. [PMID: 30250224 PMCID: PMC6155280 DOI: 10.1038/s41419-018-1017-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 08/30/2018] [Accepted: 08/31/2018] [Indexed: 12/17/2022]
Abstract
Hepatocellular carcinoma (HCC) is the one of most common and deadly cancers, and is also highly resistant to conventional chemotherapy treatments. Mitochondrial phosphoglycerate mutase/protein phosphatase (PGAM5) regulates mitochondrial homeostasis and cell death, however, little is known about its roles in cancer. The aim of this study was to explore the clinical significance and potential biological functions of PGAM5 in hepatocellular carcinoma. For the first time, our results show that PGAM5 is significantly upregulated in HCC compared with corresponding adjacent noncancerous hepatic tissues and high PGAM5 expression is an independent predictor of reduced survival times in both univariate and multivariate analyses. Additionally, in vivo and in vitro studies showed that depleting PGAM5 expression inhibited tumor growth and increased the 5-fluorouracil sensitivity of HCC cells. Conversely, restoring PGAM5 expression in PGAM5-knockdown cells dramatically enhanced HCC cell resistance to 5-fluorouracil. Importantly, we demonstrated that the mechanism of 5-fluorouracil resistance conferred to HCC cells by PGAM5 was via inhibiting BAX- and cytochrome C-mediated apoptotic signaling by interacting and stabilizing Bcl-xL. Consistently, in the same cohorts of HCC patient tissues, Bcl-xL expression was positively correlated with PGAM5, and together predicted poor prognoses. In Conclusion, Our data highlight the molecular etiology and clinical significance of PGAM5 in HCC. Targeting the novel signaling pathway mediated by PGAM5/Bcl-xL may represent a new therapeutic strategy to improve the survival outcomes of HCC patients.
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Affiliation(s)
- Jingjing Cheng
- Department of radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Dong Qian
- Department of radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China.
| | - Xiaofeng Ding
- Department of radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Tianqiang Song
- Department of Pathology, State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou, China
| | - Muyan Cai
- Department of Hepatobiliary Surgery, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Dan Xie
- Department of Hepatobiliary Surgery, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Yuwen Wang
- Department of radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Jinlin Zhao
- Department of radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Zhuang Liu
- Department of radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Zhiqiang Wu
- Department of radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Qingsong Pang
- Department of radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Li Zhu
- Department of radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Ping Wang
- Department of radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Xishan Hao
- Department of Gastrointestinal Cancer Biology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China.
| | - Zhiyong Yuan
- Department of radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China.
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31
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Sugo M, Kimura H, Arasaki K, Amemiya T, Hirota N, Dohmae N, Imai Y, Inoshita T, Shiba-Fukushima K, Hattori N, Cheng J, Fujimoto T, Wakana Y, Inoue H, Tagaya M. Syntaxin 17 regulates the localization and function of PGAM5 in mitochondrial division and mitophagy. EMBO J 2018; 37:embj.201798899. [PMID: 30237312 DOI: 10.15252/embj.201798899] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 08/03/2018] [Accepted: 08/13/2018] [Indexed: 12/26/2022] Open
Abstract
PGAM5, a mitochondrial protein phosphatase that is genetically and biochemically linked to PINK1, facilitates mitochondrial division by dephosphorylating the mitochondrial fission factor Drp1. At the onset of mitophagy, PGAM5 is cleaved by PARL, a rhomboid protease that degrades PINK1 in healthy cells, and the cleaved form facilitates the engulfment of damaged mitochondria by autophagosomes by dephosphorylating the mitophagy receptor FUNDC1. Here, we show that the function and localization of PGAM5 are regulated by syntaxin 17 (Stx17), a mitochondria-associated membrane/mitochondria protein implicated in mitochondrial dynamics in fed cells and autophagy in starved cells. In healthy cells, loss of Stx17 causes PGAM5 aggregation within mitochondria and thereby failure of the dephosphorylation of Drp1, leading to mitochondrial elongation. In Parkin-mediated mitophagy, Stx17 is prerequisite for PGAM5 to interact with FUNDC1. Our results reveal that the Stx17-PGAM5 axis plays pivotal roles in mitochondrial division and PINK1/Parkin-mediated mitophagy.
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Affiliation(s)
- Masashi Sugo
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
| | - Hana Kimura
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
| | - Kohei Arasaki
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
| | - Toshiki Amemiya
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
| | - Naohiko Hirota
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
| | - Naoshi Dohmae
- Biomolecular Characterization Unit, RIKEN Center for Sustainable Resource Science, Wako, Japan
| | - Yuzuru Imai
- Department of Research for Parkinson's Disease, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Department of Neurology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Tsuyoshi Inoshita
- Department of Treatment and Research in Multiple Sclerosis and Neuro-intractable Disease, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kahori Shiba-Fukushima
- Department of Treatment and Research in Multiple Sclerosis and Neuro-intractable Disease, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Nobutaka Hattori
- Department of Research for Parkinson's Disease, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Department of Neurology, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Department of Treatment and Research in Multiple Sclerosis and Neuro-intractable Disease, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Jinglei Cheng
- Department of Anatomy and Molecular Cell Biology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Toyoshi Fujimoto
- Department of Anatomy and Molecular Cell Biology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuichi Wakana
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
| | - Hiroki Inoue
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
| | - Mitsuo Tagaya
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan
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32
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Wauman J, Tavernier J. The intracellular domain of the leptin receptor prevents mitochondrial depolarization and mitophagy. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2018; 1865:1312-1325. [PMID: 29932990 DOI: 10.1016/j.bbamcr.2018.06.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 05/31/2018] [Accepted: 06/17/2018] [Indexed: 11/27/2022]
Abstract
Hypothalamic leptin receptor (LR) signaling regulates body weight by balancing food intake and energy expenditure. It is well established that the human LR undergoes ectodomain shedding, but little is known about the fate of the remaining cytosolic domain. This study demonstrates that regulated intramembrane proteolysis (RIP) releases the LR intracellular domain (LR ICD), which translocates to the mitochondria where it binds to SOCS6. This LR ICD-SOCS6 interaction stabilizes both proteins on the mitochondrial outer membrane and requires a functional BC box in SOCS6 for mitochondrial association and a central motif in the LR ICD for SOCS6 binding. The LR ICD prevents CCCP-induced mitochondrial depolarization and mitophagy as shown by lowered Parkin translocation and p62 accumulation. Strict regulation of mitochondrial dynamics in the hypothalamus is known to be essential for body weight homeostasis. This is the first study showing that the LR can directly modulate mitochondrial biology.
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Affiliation(s)
- Joris Wauman
- Cytokine Receptor Laboratory, Faculty of Medicine and Health Sciences, Department of Biochemistry, Ghent University, Ghent, Belgium; Center for Medical Biotechnology, VIB, Ghent, Belgium
| | - Jan Tavernier
- Cytokine Receptor Laboratory, Faculty of Medicine and Health Sciences, Department of Biochemistry, Ghent University, Ghent, Belgium; Center for Medical Biotechnology, VIB, Ghent, Belgium..
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Fujisawa K, Hara K, Takami T, Okada S, Matsumoto T, Yamamoto N, Sakaida I. Evaluation of the effects of ascorbic acid on metabolism of human mesenchymal stem cells. Stem Cell Res Ther 2018; 9:93. [PMID: 29625581 PMCID: PMC5889584 DOI: 10.1186/s13287-018-0825-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 02/05/2018] [Accepted: 03/06/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Mesenchymal stem cells (MSCs) are multipotent cells holding much promise for applications in regenerative medicine. However, with problems such as aging, increases in heteroploid cells, genomic instability, and reduced maintenance of stemness, more stable culturing methods and the production of MSCs with an improved therapeutic effect are desired. Ascorbic acid (AsA), which is a cofactor for a variety of enzymes and has an antioxidant effect, cannot be synthesized by certain animals, including humans. Nevertheless, little attention has been paid to AsA when culturing MSCs. METHODS We analyzed the effect of adding AsA to the culture medium on the proliferation and metabolism of human MSCs by serial analysis of gene expression and metabolome analysis. RESULTS We found that AsA promotes MSC proliferation, and is particularly useful when expanding MSCs isolated from bone marrow. Serial analysis of gene expression and metabolome analysis suggested that, due to HIF1α accumulation caused by decreased activity of the enzymes that use AsA as a coenzyme in cultures without AsA, genes downstream of HIF1α are expressed and there is a conversion to a hypoxia-mimetic metabolism. AsA promotes HIF1α breakdown and activates mitochondria, affecting cell proliferation and metabolism. Comprehensive evaluation of the effects of AsA on various metabolic products in MSCs revealed that AsA increases HIF1α hydroxylase activity, suppressing HIF1a transcription and leading to mitochondrial activation. CONCLUSIONS Adding AsA during MSC expansion leads to more efficient preparation of cells. These are expected to be important findings for the future application of MSCs in regenerative medicine.
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Affiliation(s)
- Koichi Fujisawa
- Center for Regenerative Medicine, Yamaguchi University School of Medicine, Minami Kogushi 1-1-1, Ube, Yamaguchi, 755-8505, Japan.,Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Minami Kogushi 1-1-1, Ube, Yamaguchi, 755-8505, Japan
| | - Kazusa Hara
- Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Minami Kogushi 1-1-1, Ube, Yamaguchi, 755-8505, Japan
| | - Taro Takami
- Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Minami Kogushi 1-1-1, Ube, Yamaguchi, 755-8505, Japan.
| | - Sae Okada
- Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Minami Kogushi 1-1-1, Ube, Yamaguchi, 755-8505, Japan
| | - Toshihiko Matsumoto
- Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Minami Kogushi 1-1-1, Ube, Yamaguchi, 755-8505, Japan
| | - Naoki Yamamoto
- Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Minami Kogushi 1-1-1, Ube, Yamaguchi, 755-8505, Japan
| | - Isao Sakaida
- Center for Regenerative Medicine, Yamaguchi University School of Medicine, Minami Kogushi 1-1-1, Ube, Yamaguchi, 755-8505, Japan.,Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Minami Kogushi 1-1-1, Ube, Yamaguchi, 755-8505, Japan
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Gupta I, Singh K, Varshney NK, Khan S. Delineating Crosstalk Mechanisms of the Ubiquitin Proteasome System That Regulate Apoptosis. Front Cell Dev Biol 2018; 6:11. [PMID: 29479529 PMCID: PMC5811474 DOI: 10.3389/fcell.2018.00011] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 01/26/2018] [Indexed: 01/10/2023] Open
Abstract
Regulatory functions of the ubiquitin-proteasome system (UPS) are exercised mainly by the ubiquitin ligases and deubiquitinating enzymes. Degradation of apoptotic proteins by UPS is central to the maintenance of cell health, and deregulation of this process is associated with several diseases including tumors, neurodegenerative disorders, diabetes, and inflammation. Therefore, it is the view that interrogating protein turnover in cells can offer a strategy for delineating disease-causing mechanistic perturbations and facilitate identification of drug targets. In this review, we are summarizing an overview to elucidate the updated knowledge on the molecular interplay between the apoptosis and UPS pathways. We have condensed around 100 enzymes of UPS machinery from the literature that ubiquitinates or deubiquitinates the apoptotic proteins and regulates the cell fate. We have also provided a detailed insight into how the UPS proteins are able to fine-tune the intrinsic, extrinsic, and p53-mediated apoptotic pathways to regulate cell survival or cell death. This review provides a comprehensive overview of the potential of UPS players as a drug target for cancer and other human disorders.
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Affiliation(s)
- Ishita Gupta
- Structural Immunology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India.,Drug Discovery Research Centre, Translational Health Science and Technology Institute, Faridabad, India
| | - Kanika Singh
- Drug Discovery Research Centre, Translational Health Science and Technology Institute, Faridabad, India
| | - Nishant K Varshney
- Drug Discovery Research Centre, Translational Health Science and Technology Institute, Faridabad, India
| | - Sameena Khan
- Drug Discovery Research Centre, Translational Health Science and Technology Institute, Faridabad, India
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Jiang T, Du F, Qin N, Lu Q, Dai J, Shen H, Hu Z. Systematical analyses of variants in DNase I hypersensitive sites to identify hepatocellular carcinoma susceptibility loci in a Chinese population. J Gastroenterol Hepatol 2017; 32:1887-1894. [PMID: 28321907 DOI: 10.1111/jgh.13790] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 02/20/2017] [Accepted: 03/16/2017] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND AIM Although several variants located at coding and non-coding regions were evaluated by previous studies, the evidence for associations between variants located in DNase I-hypersensitive sites (DHSs) and hepatocellular carcinoma (HCC) risk was still limited. Recent advances using ENCODE data indicated that genetic variants in DHSs played an important role in carcinogenesis. Therefore, systematically investigating the associations between regulatory variants in DHSs and HCC risk should be put on the agenda. METHODS We conducted a case-control design (1538 HCC cases vs 1465 normal controls) to evaluate the effects on HCC for the variants located at the uniform DNase I hypersensitive sites sequencing peaks in a Chinese population. RESULTS We found two novel single nucleotide polymorphisms rs12309362 (odds ratio = 0.64, P = 5.61 × 10-6 ) and rs9970827 (odds ratio = 0.73, P = 7.23 × 10-6 ) significantly associated with decreased risk of HCC. Conditional analysis proved that both of them independently contributed to the susceptibility of HCC. Expression quantitative trait loci analysis found that A allele of rs12309362 was significantly associated with an elevated expression of phosphatase phosphoglycerate mutase 5 in liver tissues. In addition, gene-based analysis indicated that CEBPB (P = 1 × 10-4 ) was associated with the risk of HCC, and the expression of CEBPB was significantly lower in 50 The Cancer Genome Atlas HCC tumor tissues compared with matched normal tissues. CONCLUSIONS Our results indicated that rs12309362 (G > A), rs9970827 (A > G) in DHSs, and elevated expression of CEBPB were associated with a decreased risk of HCC. These results may contribute us to understand the function of regulatory DNA sequences in HCC development.
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Affiliation(s)
- Tao Jiang
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Fangzhi Du
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Na Qin
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Qun Lu
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Juncheng Dai
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center of Cancer Medicine, Nanjing Medical University, Nanjing, China
| | - Hongbing Shen
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center of Cancer Medicine, Nanjing Medical University, Nanjing, China
| | - Zhibin Hu
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center of Cancer Medicine, Nanjing Medical University, Nanjing, China
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Sun Z, Liu Q, Hong H, Zhang H, Zhang T. miR-19 promotes osteosarcoma progression by targeting SOCS6. Biochem Biophys Res Commun 2017; 495:1363-1369. [PMID: 28986253 DOI: 10.1016/j.bbrc.2017.10.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Accepted: 10/01/2017] [Indexed: 12/11/2022]
Abstract
microRNAs (miRNAs) play critical roles in cancer development and progression. This study investigated the effects of miR-19 in human osteosarcoma (OS) development. Here, we showed that miR-19 was frequently upregulated in OS tissues and cell lines. Moreover the expression of miR-19 was associated with TNM stage, metastasis, size and poor overall survival. Mechanistically, miR-19 dramatically suppressed OS growth in vitro and in vivo. Bioinformatics analyses predicted that SOCS6 is a potential target gene of miR-19 in OS, which was confirmed by luciferase-reporter assay. We also found that SOCS6 expression was downregulated and negatively correlated with miR-19 expression in OS tissues clinically. Moreover, ectopic SOCS6 could reverse miR-19 induced OS growth. Finally, JAK2/STAT3 signaling pathway involves miR-19/SOCS6-mediated OS progression. Together, our data provide important evidence for miR-19 mediated SOCS6 in OS growth and revealed miR-19/SOCS6/JAK2/STAT3 pathway as a potential therapeutic strategy for OS patients.
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Affiliation(s)
- Zhengwen Sun
- Department of Surgery, Yantai Mountain Hospital, Yantai City, Shandong, 264000, China
| | - Qingxia Liu
- Maternity and Child Care Centers, Yantai Mountain Hospital, Yantai City, Shandong, 264000, China
| | - Huanyu Hong
- Department of Surgery, Yantai Mountain Hospital, Yantai City, Shandong, 264000, China
| | - Haiguang Zhang
- Department of Surgery, Yantai Mountain Hospital, Yantai City, Shandong, 264000, China
| | - Tongqing Zhang
- Department of Surgery, Yantai Mountain Hospital, Yantai City, Shandong, 264000, China.
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Atanasovska B, Rensen SS, van der Sijde MR, Marsman G, Kumar V, Jonkers I, Withoff S, Shiri-Sverdlov R, Greve JWM, Faber KN, Moshage H, Wijmenga C, van de Sluis B, Hofker MH, Fu J. A liver-specific long noncoding RNA with a role in cell viability is elevated in human nonalcoholic steatohepatitis. Hepatology 2017; 66:794-808. [PMID: 28073183 DOI: 10.1002/hep.29034] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 12/12/2016] [Accepted: 01/06/2017] [Indexed: 12/28/2022]
Abstract
UNLABELLED Hepatocyte apoptosis in nonalcoholic steatohepatitis (NASH) can lead to fibrosis and cirrhosis, which permanently damage the liver. Understanding the regulation of hepatocyte apoptosis is therefore important to identify therapeutic targets that may prevent the progression of NASH to fibrosis. Recently, increasing evidence has shown that long noncoding (lnc) RNAs are involved in various biological processes and that their dysregulation underlies a number of complex human diseases. By performing gene expression profiling of 4,383 lncRNAs in 82 liver samples from individuals with NASH (n = 48), simple steatosis but no NASH (n = 11), and healthy controls (n = 23), we discovered a liver-specific lncRNA (RP11-484N16.1) on chromosome 18 that showed significantly elevated expression in the liver tissue of NASH patients. This lncRNA, which we named lnc18q22.2 based on its chromosomal location, correlated with NASH grade (r = 0.51, P = 8.11 × 10-7 ), lobular inflammation (r = 0.49, P = 2.35 × 10-6 ), and nonalcoholic fatty liver disease activity score (r = 0.48, P = 4.69 × 10-6 ). The association of lnc18q22.2 to liver steatosis and steatohepatitis was replicated in 44 independent liver biopsies (r = 0.47, P = 0.0013). We provided a genetic structure of lnc18q22.2 showing an extended exon 2 in liver. Knockdown of lnc18q22.2 in four different hepatocyte cell lines resulted in severe phenotypes ranging from reduced cell growth to lethality. This observation was consistent with pathway analyses of genes coexpressed with lnc18q22.2 in human liver or affected by lnc18q22.2 knockdown. CONCLUSION We identified an lncRNA that can play an important regulatory role in liver function and provide new insights into the regulation of hepatocyte viability in NASH. (Hepatology 2017;66:794-808).
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Affiliation(s)
- Biljana Atanasovska
- Department of Pediatrics, Molecular Genetics, University Medical Center Groningen, Groningen, The Netherlands
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Sander S Rensen
- Department of Surgery, University Hospital Maastricht, and Nutrition and Toxicology Research Institute, University of Maastricht, Maastricht, The Netherlands
| | - Marijke R van der Sijde
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Glenn Marsman
- Department of Pediatrics, Molecular Genetics, University Medical Center Groningen, Groningen, The Netherlands
| | - Vinod Kumar
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Iris Jonkers
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Sebo Withoff
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Ronit Shiri-Sverdlov
- Departments of Molecular Genetics, Molecular Cell Biology, and Population Genetics, Nutrition and Toxicology Research Institute, University of Maastricht, Maastricht, The Netherlands
| | - Jan Willem M Greve
- Department of Surgery, Zuyderland Medical Center, Heerlen, The Netherlands
| | - Klaas Nico Faber
- Department of Gastroenterology and Hepatology, University of Groningen, Groningen, The Netherlands
- Department of Laboratory Medicine, Center for Liver, Digestive, and Metabolic Diseases, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Han Moshage
- Department of Gastroenterology and Hepatology, University of Groningen, Groningen, The Netherlands
- Department of Laboratory Medicine, Center for Liver, Digestive, and Metabolic Diseases, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Cisca Wijmenga
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Bart van de Sluis
- Department of Pediatrics, Molecular Genetics, University Medical Center Groningen, Groningen, The Netherlands
| | - Marten H Hofker
- Department of Pediatrics, Molecular Genetics, University Medical Center Groningen, Groningen, The Netherlands
| | - Jingyuan Fu
- Department of Pediatrics, Molecular Genetics, University Medical Center Groningen, Groningen, The Netherlands
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Abstract
PGAM5 is a mitochondrial membrane protein that functions as an atypical Ser/Thr phosphatase and is a regulator of oxidative stress response, necroptosis, and autophagy. Here we present several crystal structures of PGAM5 including the activating N-terminal regulatory sequences, providing a model for structural plasticity, dimerization of the catalytic domain, and the assembly into an enzymatically active dodecameric form. Oligomeric states observed in structures were supported by hydrogen exchange mass spectrometry, size-exclusion chromatography, and analytical ultracentrifugation experiments in solution. We report that the catalytically important N-terminal WDPNWD motif acts as a structural integrator assembling PGAM5 into a dodecamer, allosterically activating the phosphatase by promoting an ordering of the catalytic loop. Additionally the observed active site plasticity enabled visualization of essential conformational rearrangements of catalytic elements. The comprehensive biophysical characterization offers detailed structural models of this key mitochondrial phosphatase that has been associated with the development of diverse diseases. PGAM5 catalytic domain shares phosphoglycerate mutase fold and forms stable dimer WDPNWD motif allosterically activates the fully active dodecameric form Crystal structures reveal conformational plasticity of the PGAM5 active site
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Olsen I, Singhrao SK, Osmundsen H. Periodontitis, pathogenesis and progression: miRNA-mediated cellular responses to Porphyromonas gingivalis. J Oral Microbiol 2017; 9:1333396. [PMID: 28748037 PMCID: PMC5508365 DOI: 10.1080/20002297.2017.1333396] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 05/15/2017] [Indexed: 12/25/2022] Open
Abstract
Porphyromonas gingivalis is considered a keystone pathogen in periodontitis, a disease typically driven by dysbiosis of oral inflammophilic polymicrobial pathobionts. To combat infectious agents, the natural defense response of the host is to switch on inflammatory signaling cascades, whereby microRNA (miRNA) species serve as alternative genetic inhibitory transcriptional endpoints. miRNA profiles from diseased sites differ from those detected in disease-free tissues. miRNA profiles could therefore be harnessed as potential diagnostic/prognostic tools. The regulatory role of some miRNA species (miRNA-128, miRNA-146, miRNA-203, and miRNA-584) in the innate immune system suggests these molecular signatures also have potential in therapy. P. gingivalis–associated miRNAs are likely to influence the innate immune response, whereas its lipopolysaccharide may affect the nature of host miRNAs and their mRNA targets. This mini review discusses miRNA-dependent transcriptional and regulatory phenomena ensuing immune signaling cascade switch-on with development and progression of periodontitis initiated by P. gingivalis exposure.
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Affiliation(s)
- Ingar Olsen
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Sim K Singhrao
- Dementia & Neurodegeneration Research Group, Faculty of Clinical and Biomedical Sciences, School of Dentistry, University of Central Lancashire, Preston, UK
| | - Harald Osmundsen
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
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40
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Xu Z, Jin X, Pan T, Liu T, Wan N, Li S. Antagonistic effects of selenium on cadmium-induced apoptosis by restoring the mitochondrial dynamic equilibrium and energy metabolism in chicken spleens. Oncotarget 2017; 8:52629-52641. [PMID: 28881757 PMCID: PMC5581056 DOI: 10.18632/oncotarget.17539] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Accepted: 04/12/2017] [Indexed: 12/13/2022] Open
Abstract
The aim of this study was to investigate the mechanism of cadmium-induced apoptosis in chicken spleens and the antagonistic effects of selenium. We duplicated the selenium-cadmium interaction model and examined the expression of apoptosis-, immune-, mitochondrial dynamics- and energy metabolism-related genes. The results demonstrated that after treatment with cadmium, the frequency of apoptosis was significantly increased, and the morphological characteristics of apoptosis were observed. The expression of pro-apoptotic genes was increased, and that of anti-apoptotic genes was decreased. The mRNA levels of tumor necrosis factor-α and interlenkin-1β were observably increased, but the interlenkin-2 and interferon-γ levels were markedly decreased. Furthermore, the mRNA and protein levels of dynamin-related protein 1 and mitochondrial fission factor were significantly enhanced, whereas mitofusin 1, mitofusin 2, and optic atrophy 1 were markedly decreased. The expression of hexokinase 1, hexokinase 2, aconitase 2, lactate dehydrogenase A, lactate dehydrogenase B, succinatedehydrogenase B, pyruvate kinase and phosphofructokinase were also reduced. Selenium supplements remarkably attenuated cadmium-induced effects (p < 0.05). Based on the above results, conclude that the cadmium treatment promoted a mitochondrial dynamic imbalance and reduced energy metabolism, leading to apoptosis and immune dysfunction in chicken spleens, and selenium had an antagonistic effect on Cd-induced apoptosis.
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Affiliation(s)
- Zhe Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Xi Jin
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Tingru Pan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Tianqi Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Na Wan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China
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Drp1-Dependent Mitochondrial Fission Plays Critical Roles in Physiological and Pathological Progresses in Mammals. Int J Mol Sci 2017; 18:ijms18010144. [PMID: 28098754 PMCID: PMC5297777 DOI: 10.3390/ijms18010144] [Citation(s) in RCA: 183] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 12/28/2016] [Accepted: 01/09/2017] [Indexed: 12/22/2022] Open
Abstract
Current research has demonstrated that mitochondrial morphology, distribution, and function are maintained by the balanced regulation of mitochondrial fission and fusion, and perturbation of the homeostasis between these processes has been related to cell or organ dysfunction and abnormal mitochondrial redistribution. Abnormal mitochondrial fusion induces the fragmentation of mitochondria from a tubular morphology into pieces; in contrast, perturbed mitochondrial fission results in the fusion of adjacent mitochondria. A member of the dynamin family of large GTPases, dynamin-related protein 1 (Drp1), effectively influences cell survival and apoptosis by mediating the mitochondrial fission process in mammals. Drp1-dependent mitochondrial fission is an intricate process regulating both cellular and organ dynamics, including development, apoptosis, acute organ injury, and various diseases. Only after clarification of the regulative mechanisms of this critical protein in vivo and in vitro will it set a milestone for preventing mitochondrial fission related pathological processes and refractory diseases.
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Serglycin in tumor microenvironment promotes non-small cell lung cancer aggressiveness in a CD44-dependent manner. Oncogene 2016; 36:2457-2471. [PMID: 27819672 PMCID: PMC5415946 DOI: 10.1038/onc.2016.404] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 08/20/2016] [Accepted: 09/19/2016] [Indexed: 02/06/2023]
Abstract
Tumor microenvironment (TME) plays an active role in promoting tumor progression. To further understand the communication between TME and tumor cells, this study aimed at investigating the involvement of CD44, a type I cell surface receptor, in the crosstalk between tumor cells and TME. We have previously shown that chondroitin sulfate proteoglycan serglycin (SRGN), a CD44-interacting factor, was preferentially secreted by cancer-associated fibroblasts (CAFs) for promoting tumor growth in breast cancer patients. In this study, we show that SRGN is overexpressed in primary non-small cell lung cancers (NSCLCs), by both carcinoma and stromal cells. Using gain-of-function and loss-of-function approaches, we show that SRGN promotes NSCLC cell migration and invasion as well as colonization in the lung and liver in a CD44-dependent manner. SRGN induces lung cancer cell stemness, as demonstrated by its ability to enhance NSCLC cell sphere formation via Nanog induction, accompanied with increased chemoresistance and anoikis-resistance. SRGN promotes epithelial-mesenchymal transition by enhancing vimentin expression via CD44/NF-κB/claudin-1 (CLDN1) axis. In support, CLDN1 and SRGN expression are tightly linked together in primary NSCLC. Most importantly, increased expression of SRGN and/or CLDN1 predicts poor prognosis in primary lung adenocarcinomas. In summary, we demonstrate that SRGN secreted by tumor cells and stromal components in the TME promotes malignant phenotypes through interacting with tumor cell receptor CD44, suggesting that a combined therapy targeting both CD44 and its ligands in the TME may be an attractive approach for cancer therapy.
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43
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Yang C, Liu X, Yang F, Zhang W, Chen Z, Yan D, You Q, Wu X. Mitochondrial phosphatase PGAM5 regulates Keap1-mediated Bcl-xL degradation and controls cardiomyocyte apoptosis driven by myocardial ischemia/reperfusion injury. In Vitro Cell Dev Biol Anim 2016; 53:248-257. [PMID: 27815660 DOI: 10.1007/s11626-016-0105-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 09/29/2016] [Indexed: 01/06/2023]
Abstract
Phosphoglycerate mutase 5 (PGAM5) is a mitochondrial membrane protein that plays crucial roles in necroptosis and apoptosis. Though PGAM5 is known to be required for inducing intrinsic apoptosis through interacting with BCL2 associated X protein (Bax) and dynamin-related protein 1 (Drp1), the expression and role of PGAM5 in cardiomyocyte apoptosis driven by myocardial ischemia/reperfusion injury(MIRI) has not been studied. The present study shows that PGAM5 expression decreased after MIRI in vivo, positively correlated with Bcl-xL expression, negatively correlated with Kelch-ECH associating protein 1 (Keap1) expression. Furthermore, PGAM5 expression also decreased in cardiomyocytes after hypoxia/reoxygenation (H/R) treatment in vitro. PGAM5 silence promoted cardiomyocyte apoptosis and inhibited Bcl-xL expression, but with no effect on Keap1 expression. Accordingly, Keap1 overexpression further inhibited Bcl-xL and PGAM5 expression. Additionally, PGAM5-Bcl-xL-Keap1 interaction was identified, suggesting that PGAM5 might participate in the degradation of Bcl-xL mediated by Keap1. In summary, PGAM5 controls cardiomyocyte apoptosis induced by MIRI through regulating Keap1-mediated Bcl-xL degradation, which may supply a novel molecular target for acute myocardial infarction (AMI) therapy. Graphical abstract ᅟ.
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Affiliation(s)
- Chen Yang
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Xiaojuan Liu
- Department of Pathogen Biology, Medical College, Nantong University, Nantong, Jiangsu, 226001, China.,Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College, Nantong University, Nantong, Jiangsu, 226001, China
| | - Fangfang Yang
- Department of Infection Diseases, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Weixun Zhang
- Medical College, Nantong University, Nantong, Jiangsu, 226001, China
| | - Zihao Chen
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Daliang Yan
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Qingsheng You
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China.
| | - Xiang Wu
- Department of Vasculocardiology, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China.
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44
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Wu H, Wei H, Sehgal SA, Liu L, Chen Q. Mitophagy receptors sense stress signals and couple mitochondrial dynamic machinery for mitochondrial quality control. Free Radic Biol Med 2016; 100:199-209. [PMID: 27036363 DOI: 10.1016/j.freeradbiomed.2016.03.030] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 03/25/2016] [Accepted: 03/25/2016] [Indexed: 12/11/2022]
Abstract
Mitochondria are essential organelles for many fundamental cellular processes, including energy production, fatty acid β-oxidation, metabolite synthesis, iron and calcium homeostasis, and programmed cell death. Mitochondrial quality thus influences not only individual cell functions but also whole body metabolism. Dysregulated mitochondrial quality control is closely associated with the progression of aging related diseases, such as cancers and neurodegenerative disorders. Mitochondrial quality is monitored at the protein, organelle and sub-organelle levels. The critical issues are how stresses such as bioenergetic stress, oxidative stress and proteotoxic stress, are sensed and how the mitochondrial events are coordinated. Recently, several receptors were identified to mediate selective mitophagy, which is essential for mitochondrial quality control in yeast and mammalian cells. It is emerging that these receptors sense distinct stress signals and couple mitophagy machineries with mitochondrial fission/fusion machineries for mitochondrial quality control. Herein, we will review recent advances in receptors mediated mitophagy and mitochondrial dynamics for mitochondrial quality control, with attempt to have an integrative view on the molecular mechanisms for mitochondrial quality control.
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Affiliation(s)
- Hao Wu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Huifang Wei
- China-US (Henan) Hormel Cancer Institute, Zhengzhou, China
| | - Sheikh Arslan Sehgal
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China; Department of Biosciences, COMSATS Institute of Information Technology, Sahiwal, Pakistan
| | - Lei Liu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Quan Chen
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China; Tianjin Key Laboratory of Protein Science, College of Life Sciences, Nankai University, Tianjin, China.
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45
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Wang P, Wang P, Liu B, Zhao J, Pang Q, Agrawal SG, Jia L, Liu FT. Dynamin-related protein Drp1 is required for Bax translocation to mitochondria in response to irradiation-induced apoptosis. Oncotarget 2016; 6:22598-612. [PMID: 26093086 PMCID: PMC4673185 DOI: 10.18632/oncotarget.4200] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 05/21/2015] [Indexed: 01/02/2023] Open
Abstract
Translocation of the pro-apoptotic protein Bax from the cytosol to the mitochondria is a crucial step in DNA damage-mediated apoptosis, and is also found to be involved in mitochondrial fragmentation. Irradiation-induced cytochrome c release and apoptosis was associated with Bax activation, but not mitochondrial fragmentation. Both Bax and Drp1 translocated from the cytosol to the mitochondria in response to irradiation. However, Drp1 mitochondrial translocation and oligomerization did not require Bax, and failed to induce apoptosis in Bax deficient diffuse large B-cell lymphoma (DLBCL) cells. Using fluorescent microscopy and the intensity correlation analysis, we demonstrated that Bax and Drp1 were colocalized and the levels of colocalization were increased by UV irradiation. Using co-immuno-precipitation, we confirmed that Bax and Drp1 were binding partners. Irradiation induced a time-associated increase in the interaction between active Bax and Drp1. Knocking down Drp1 using siRNA blocked UV irradiation-mediated Bax mitochondrial translocation. In conclusion, our findings demonstrate for the first time, that Drp1 is required for Bax mitochondrial translocation, but Drp1-induced mitochondrial fragmentation alone is not sufficient to induce apoptosis in DLBCL cells.
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Affiliation(s)
- Ping Wang
- Department of Radiobiology, Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Centre of Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Peiguo Wang
- Department of Radiobiology, Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Centre of Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Becky Liu
- East Surrey Hospital, Surrey and Sussex Healthcare NHS Trust, Redhill, Surrey, United Kingdom
| | - Jing Zhao
- Department of Radiobiology, Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Centre of Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Qingsong Pang
- Department of Radiobiology, Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Centre of Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Samir G Agrawal
- Pathology Group, Blizard Institute, Queen Mary University of London, London, United Kingdom
| | - Li Jia
- Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, United Kingdom
| | - Feng-Ting Liu
- Department of Radiobiology, Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Centre of Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
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46
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Liu C, Liu H, Chen J. [The Role of SOCS in the Development of Tumors]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2016; 19:620-5. [PMID: 27666555 PMCID: PMC5972954 DOI: 10.3779/j.issn.1009-3419.2016.09.11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Suppressor of cytokine signaling (SOCS) family proteins are a group of negative regulatory factors that plays important roles in the negative regulation of cytokine responses by terminating the activation of the JAK-STAT and other signaling pathways. The family is composed of eight structurally related proteins. mainly through the inhibition of the activation of JAK-STAT signaling pathway and regulates cell proliferation, differentiation and apoptosis. In the process of tumor progression, the promoter CG island hypermethylation, gene mutation, gene deletion and inactivation lead to the abnormal expression of SOCS protein make JAK-STAT continuous activation, resulting in the development and metastasis of tumor. Here, we review the SOCS family members found, composition and molecular structure, the domain of the function, and the latest progress of development in tumor. Based on the important role of SOCS in tumor development, SOCS as a negative regulator factor represent a kind of tumor suppressor genes, has become a new target for tumor therapy.
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Affiliation(s)
- Chunlai Liu
- Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Hongyu Liu
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General
Hospital, Tianjin 300052, China
| | - Jun Chen
- Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin 300052, China;Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General
Hospital, Tianjin 300052, China
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47
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Che TF, Lin CW, Wu YY, Chen YJ, Han CL, Chang YL, Wu CT, Hsiao TH, Hong TM, Yang PC. Mitochondrial translocation of EGFR regulates mitochondria dynamics and promotes metastasis in NSCLC. Oncotarget 2016; 6:37349-66. [PMID: 26497368 PMCID: PMC4741934 DOI: 10.18632/oncotarget.5736] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 10/06/2015] [Indexed: 01/01/2023] Open
Abstract
Dysfunction of the mitochondria is well-known for being associated with cancer progression. In the present study, we analyzed the mitochondria proteomics of lung cancer cell lines with different invasion abilities and found that EGFR is highly expressed in the mitochondria of highly invasive non-small-cell lung cancer (NSCLC) cells. EGF induces the mitochondrial translocation of EGFR; further, it leads to mitochondrial fission and redistribution in the lamellipodia, upregulates cellular ATP production, and enhances motility in vitro and in vivo. Moreover, EGFR can regulate mitochondrial dynamics by interacting with Mfn1 and disturbing Mfn1 polymerization. Overexpression of Mfn1 reverses the phenotypes resulting from EGFR mitochondrial translocation. We show that the mitochondrial EGFR expressions are higher in paired samples of the metastatic lymph node as compared with primary lung tumor and are inversely correlated with the overall survival in NSCLC patients. Therefore, our results demonstrate that besides the canonical role of EGFR as a receptor tyrosine, the mitochondrial translocation of EGFR may enhance cancer invasion and metastasis through regulating mitochondria dynamics.
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Affiliation(s)
- Ting-Fang Che
- Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Ching-Wen Lin
- Institute of Biomedical Science, Academia Sinica, Taipei 115, Taiwan
| | - Yi-Ying Wu
- Institute of Clinical Medicine, College of Medicine, National Cheng-Kung University, Tainan 701, Taiwan
| | - Yu-Ju Chen
- Institute of Chemistry, Academia Sinica 115, Taipei, Taiwan
| | - Chia-Li Han
- Master Program for Clinical Pharmacogenomics and Pharmacoproteomics, School of Pharmacy, Taipei Medical University 110, Taipei, Taiwan
| | - Yih-leong Chang
- Department of Pathology and Graduate Institute of Pathology, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Chen-Tu Wu
- Department of Pathology and Graduate Institute of Pathology, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Tzu-Hung Hsiao
- Department of Medical Research, Taichung Veterans General Hospital, Taichung 407, Taiwan
| | - Tse-Ming Hong
- Institute of Clinical Medicine, College of Medicine, National Cheng-Kung University, Tainan 701, Taiwan
| | - Pan-Chyr Yang
- Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei 100, Taiwan.,Institute of Biomedical Science, Academia Sinica, Taipei 115, Taiwan.,NTU Center for Genomic Medicine, College of Medicine, National Taiwan University, Taipei 100, Taiwan.,Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei 100, Taiwan
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48
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Xu W, Jing L, Wang Q, Lin CC, Chen X, Diao J, Liu Y, Sun X. Bax-PGAM5L-Drp1 complex is required for intrinsic apoptosis execution. Oncotarget 2016; 6:30017-34. [PMID: 26356820 PMCID: PMC4745779 DOI: 10.18632/oncotarget.5013] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 08/20/2015] [Indexed: 01/10/2023] Open
Abstract
Intrinsic apoptosis eliminates cells with damaged DNA and cells with dysregulated expression of oncogene. PGAM5, a member of the phosphoglycerate mutase family, has two splicing variants: PGAM5L (the long form) and PGAM5S (the short form). It has been well established that PGAM5 is at the convergent point of multiple necrosis pathways. However, the role of PGAM5 in intrinsic apoptosis is still controversial. Here we report that the PGAM5L, but not PGAM5S is a prerequisite for the activation of Bax and dephosphorylation of Drp1 in arenobufagin and staurosporine induced intrinsic apoptosis. Knockdown of PGAM5L inhibits the translocation of Bax to the mitochondria and reduces mitochondrial fission. The interaction between PGAM5L and Drp1 was observed in both arenobufagin and staurosporine treated HCT116 cells, but not in HCT116 Bax−/− cells. Bax transfection rescues the formation of the triplex in both arenobufagin and staurosporine stimulated HCT116 Bax−/− cells. Arenobufagin shows remarkable anti-cancer effects both in orthotropic and heterotropic CRC models and demonstrates less toxic effects as compared with that of cisplatin. Bax-PGAM5L-Drp1 complex is detected in arenobufagin and staurosporine treated CRC cells in vitro and in arenobufagin and cisplatin treated tumor in vivo as well. In summary, our results demonstrate that Bax-PGAM5L-Drp1 complex is required for intrinsic apoptosis execution.
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Affiliation(s)
- Wenjuan Xu
- Nanfang Hospital, Southern Medical University, Guangzhou, China.,School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Linlin Jing
- TCM Integrated Hospital of Southern Medical University, Guangzhou, China
| | - Quanshi Wang
- Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Chung-Chih Lin
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan
| | - Xiaoting Chen
- Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Jianxin Diao
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Yuanliang Liu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Xuegang Sun
- Nanfang Hospital, Southern Medical University, Guangzhou, China.,School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
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49
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Li S, Fell SM, Surova O, Smedler E, Wallis K, Chen ZX, Hellman U, Johnsen JI, Martinsson T, Kenchappa RS, Uhlén P, Kogner P, Schlisio S. The 1p36 Tumor Suppressor KIF 1Bβ Is Required for Calcineurin Activation, Controlling Mitochondrial Fission and Apoptosis. Dev Cell 2016; 36:164-78. [PMID: 26812016 DOI: 10.1016/j.devcel.2015.12.029] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 11/23/2015] [Accepted: 12/23/2015] [Indexed: 10/22/2022]
Abstract
KIF1Bβ is a candidate 1p36 tumor suppressor that regulates apoptosis in the developing sympathetic nervous system. We found that KIF1Bβ activates the Ca(2+)-dependent phosphatase calcineurin (CN) by stabilizing the CN-calmodulin complex, relieving enzymatic autoinhibition and enabling CN substrate recognition. CN is the key mediator of cellular responses to Ca(2+) signals and its deregulation is implicated in cancer, cardiac, neurodegenerative, and immune disease. We show that KIF1Bβ affects mitochondrial dynamics through CN-dependent dephosphorylation of Dynamin-related protein 1 (DRP1), causing mitochondrial fission and apoptosis. Furthermore, KIF1Bβ actuates recognition of all known CN substrates, implying a general mechanism for KIF1Bβ in Ca(2+) signaling and how Ca(2+)-dependent signaling is executed by CN. Pathogenic KIF1Bβ mutations previously identified in neuroblastomas and pheochromocytomas all fail to activate CN or stimulate DRP1 dephosphorylation. Importantly, KIF1Bβ and DRP1 are silenced in 1p36 hemizygous-deleted neuroblastomas, indicating that deregulation of calcineurin and mitochondrial dynamics contributes to high-risk and poor-prognosis neuroblastoma.
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Affiliation(s)
- Shuijie Li
- Ludwig Institute for Cancer Research Ltd., 17177 Stockholm, Sweden; Department of Microbiology and Tumor and Cell Biology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Stuart M Fell
- Ludwig Institute for Cancer Research Ltd., 17177 Stockholm, Sweden; Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Olga Surova
- Ludwig Institute for Cancer Research Ltd., 17177 Stockholm, Sweden
| | - Erik Smedler
- Department of Medical Biochemistry and Biophysics, Karolinska Institute, 17177 Stockholm, Sweden
| | - Karin Wallis
- Ludwig Institute for Cancer Research Ltd., 17177 Stockholm, Sweden
| | - Zhi Xiong Chen
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
| | - Ulf Hellman
- Ludwig Institute for Cancer Research Ltd., Biomedical Center, 75124 Uppsala, Sweden
| | - John Inge Johnsen
- Department of Women's and Children's Health, Karolinska Institutet, 17176 Stockholm, Sweden
| | - Tommy Martinsson
- Department of Clinical Genetics, Institute of Biomedicine, University of Gothenburg, Sahlgrenska University Hospital, 41345 Göteborg, Sweden
| | - Rajappa S Kenchappa
- Neuro-Oncology Program, Moffitt Cancer Center, 12902 USF Magnolia Drive, Tampa, FL 33612, USA
| | - Per Uhlén
- Department of Medical Biochemistry and Biophysics, Karolinska Institute, 17177 Stockholm, Sweden
| | - Per Kogner
- Department of Women's and Children's Health, Karolinska Institutet, 17176 Stockholm, Sweden
| | - Susanne Schlisio
- Ludwig Institute for Cancer Research Ltd., 17177 Stockholm, Sweden; Department of Microbiology and Tumor and Cell Biology, Karolinska Institutet, 17177 Stockholm, Sweden.
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50
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Lenhausen AM, Wilkinson AS, Lewis EM, Dailey KM, Scott AJ, Khan S, Wilkinson JC. Apoptosis Inducing Factor Binding Protein PGAM5 Triggers Mitophagic Cell Death That Is Inhibited by the Ubiquitin Ligase Activity of X-Linked Inhibitor of Apoptosis. Biochemistry 2016; 55:3285-302. [PMID: 27218139 DOI: 10.1021/acs.biochem.6b00306] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Apoptosis inducing factor (AIF) plays a well-defined role in controlling cell death but is also a critical factor for maintaining mitochondrial energy homeostasis; how these dueling activities are balanced has remained largely elusive. To identify new AIF binding partners that may define the continuum of AIF cellular regulation, a biochemical screen was performed that identified the mitochondrial phosphoglycerate mutase 5 (PGAM5) as an AIF associated factor. AIF binds both the short and long isoforms of PGAM5 and can reduce the ability of PGAM5 to control antioxidant responses. Transient overexpression of either PGAM5 isoform triggers caspase activation and cell death, and while AIF could reduce this caspase activation neither AIF expression nor caspase activity is required for PGAM5-mediated death. PGAM5 toxicity morphologically and biochemically resembles mitophagic cell death and is inhibited by the AIF binding protein X-linked inhibitor of apoptosis (XIAP) in a manner that depends on the ubiquitin ligase activity of XIAP. The phosphatase activity of PGAM5 was not required for cell death, and comparison of phosphatase activity between short and long PGAM5 isoforms suggested that only the long isoform is catalytically competent. This property correlated with an increased ability of PGAM5L to form dimers and/or higher order oligomers in intact cells compared to PGAM5S. Overall this study identifies an AIF/PGAM5/XIAP axis that can regulate PGAM5 activities related to the antioxidant response and mitophagy.
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Affiliation(s)
- Audrey M Lenhausen
- Department of Biochemistry, Wake Forest School of Medicine , Winston-Salem, North Carolina 27157, United States
| | - Amanda S Wilkinson
- Department of Chemistry and Biochemistry, North Dakota State University , Fargo, North Dakota 58108, United States
| | - Eric M Lewis
- Department of Biochemistry, Wake Forest School of Medicine , Winston-Salem, North Carolina 27157, United States
| | - Kaitlin M Dailey
- Department of Chemistry and Biochemistry, North Dakota State University , Fargo, North Dakota 58108, United States
| | - Andrew J Scott
- Department of Chemistry and Biochemistry, North Dakota State University , Fargo, North Dakota 58108, United States
| | - Shahzeb Khan
- Department of Chemistry and Biochemistry, North Dakota State University , Fargo, North Dakota 58108, United States
| | - John C Wilkinson
- Department of Chemistry and Biochemistry, North Dakota State University , Fargo, North Dakota 58108, United States
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