1
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Jiang X, Zhu B, Li G, Cui S, Yang J, Jiang R, Wang B. p20BAP31 promotes cell apoptosis via interaction with GRP78 and activating the PERK pathway in colorectal cancer. Int J Biol Macromol 2024; 272:132870. [PMID: 38844291 DOI: 10.1016/j.ijbiomac.2024.132870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 01/12/2024] [Accepted: 06/01/2024] [Indexed: 06/10/2024]
Abstract
Colorectal cancer (CRC) is the second most deadly cancer worldwide. Although various treatments for CRC have made progress, they have limitations. Therefore, the search for new effective molecular targets is important for the treatment of CRC. p20BAP31 induces apoptosis through diverse pathways and exhibits greater sensitivity in CRC. Therefore, a comprehensive exploration of the molecular functions of p20BAP31 is important for its application in anti-tumor therapy. In this study, we showed that exogenous p20BAP31 was still located in the ER and significantly activated the unfolded protein response (UPR) through the PERK pathway. The activation of the PERK pathway is prominent in p20BAP31-induced reactive oxygen species (ROS) accumulation and apoptosis. We found, for the first time, that p20BAP31 leads to ER stress and markedly attenuates tumor cell growth in vivo. Importantly, mechanistic investigations indicated that p20BAP31 competitively binds to GRP78 from PERK and causes hyperactivation of the UPR. Furthermore, p20BAP31 upregulates the expression of GRP78 by promoting HSF1 nuclear translocation and enhancing its binding to the GRP78 promoter. These findings reveal p20BAP31 as a regulator of ER stress and a potential target for tumor therapy, and elucidate the underlying mechanism by which p20BAP31 mediates signal transduction between ER and mitochondria.
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Affiliation(s)
- Xiaohan Jiang
- College of Life and Health Science, Northeastern University, Shenyang, Liaoning Province, China
| | - Benzhi Zhu
- College of Life and Health Science, Northeastern University, Shenyang, Liaoning Province, China
| | - Guoxun Li
- College of Life and Health Science, Northeastern University, Shenyang, Liaoning Province, China
| | - Shuyu Cui
- College of Life and Health Science, Northeastern University, Shenyang, Liaoning Province, China
| | - Jiaying Yang
- College of Life and Health Science, Northeastern University, Shenyang, Liaoning Province, China
| | - Rui Jiang
- College of Life and Health Science, Northeastern University, Shenyang, Liaoning Province, China.
| | - Bing Wang
- College of Life and Health Science, Northeastern University, Shenyang, Liaoning Province, China.
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2
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Liu BH, Xu CZ, Liu Y, Lu ZL, Fu TL, Li GR, Deng Y, Luo GQ, Ding S, Li N, Geng Q. Mitochondrial quality control in human health and disease. Mil Med Res 2024; 11:32. [PMID: 38812059 PMCID: PMC11134732 DOI: 10.1186/s40779-024-00536-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 05/07/2024] [Indexed: 05/31/2024] Open
Abstract
Mitochondria, the most crucial energy-generating organelles in eukaryotic cells, play a pivotal role in regulating energy metabolism. However, their significance extends beyond this, as they are also indispensable in vital life processes such as cell proliferation, differentiation, immune responses, and redox balance. In response to various physiological signals or external stimuli, a sophisticated mitochondrial quality control (MQC) mechanism has evolved, encompassing key processes like mitochondrial biogenesis, mitochondrial dynamics, and mitophagy, which have garnered increasing attention from researchers to unveil their specific molecular mechanisms. In this review, we present a comprehensive summary of the primary mechanisms and functions of key regulators involved in major components of MQC. Furthermore, the critical physiological functions regulated by MQC and its diverse roles in the progression of various systemic diseases have been described in detail. We also discuss agonists or antagonists targeting MQC, aiming to explore potential therapeutic and research prospects by enhancing MQC to stabilize mitochondrial function.
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Affiliation(s)
- Bo-Hao Liu
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
- Department of Thoracic Surgery, First Hospital of Jilin University, Changchun, 130021, China
| | - Chen-Zhen Xu
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yi Liu
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Zi-Long Lu
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Ting-Lv Fu
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Guo-Rui Li
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yu Deng
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Guo-Qing Luo
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Song Ding
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Ning Li
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
| | - Qing Geng
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
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3
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Zung N, Aravindan N, Boshnakovska A, Valenti R, Preminger N, Jonas F, Yaakov G, Willoughby MM, Homberg B, Keller J, Kupervaser M, Dezorella N, Dadosh T, Wolf SG, Itkin M, Malitsky S, Brandis A, Barkai N, Fernández-Busnadiego R, Reddi AR, Rehling P, Rapaport D, Schuldiner M. The molecular mechanism of on-demand sterol biosynthesis at organelle contact sites. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.09.593285. [PMID: 38766039 PMCID: PMC11100823 DOI: 10.1101/2024.05.09.593285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Contact-sites are specialized zones of proximity between two organelles, essential for organelle communication and coordination. The formation of contacts between the Endoplasmic Reticulum (ER), and other organelles, relies on a unique membrane environment enriched in sterols. However, how these sterol-rich domains are formed and maintained had not been understood. We found that the yeast membrane protein Yet3, the homolog of human BAP31, is localized to multiple ER contact sites. We show that Yet3 interacts with all the enzymes of the post-squalene ergosterol biosynthesis pathway and recruits them to create sterol-rich domains. Increasing sterol levels at ER contacts causes its depletion from the plasma membrane leading to a compensatory reaction and altered cell metabolism. Our data shows that Yet3 provides on-demand sterols at contacts thus shaping organellar structure and function. A molecular understanding of this protein's functions gives new insights into the role of BAP31 in development and pathology.
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Affiliation(s)
- Naama Zung
- Department of Molecular Genetics, Weizmann Institute of Science, Israel
| | - Nitya Aravindan
- Interfaculty Institute of Biochemistry, University of Tuebingen, Germany
| | - Angela Boshnakovska
- Department of Cellular Biochemistry, University Medical Center Göttingen, Germany
- Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Translational Neuroinflammation and Automated Microscopy, Germany
- Max Planck Institute for Multidisciplinary Sciences, D-37077, Germany
| | - Rosario Valenti
- Department of Molecular Genetics, Weizmann Institute of Science, Israel
| | - Noga Preminger
- Department of Molecular Genetics, Weizmann Institute of Science, Israel
| | - Felix Jonas
- Department of Molecular Genetics, Weizmann Institute of Science, Israel
| | - Gilad Yaakov
- Department of Molecular Genetics, Weizmann Institute of Science, Israel
| | - Mathilda M Willoughby
- School of Chemistry and Biochemistry, Georgia Institute of Technology, USA
- Biochemistry and Molecular Biology Department, University of Nebraska Medical Center, USA
| | - Bettina Homberg
- Department of Cellular Biochemistry, University Medical Center Göttingen, Germany
- Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Translational Neuroinflammation and Automated Microscopy, Germany
- Max Planck Institute for Multidisciplinary Sciences, D-37077, Germany
| | - Jenny Keller
- University Medical Center Göttingen, Institute for Neuropathology, 37077, Germany
- Collaborative Research Center 1190 "Compartmental Gates and Contact Sites in Cells", University of Göttingen, Germany
| | - Meital Kupervaser
- The De Botton Protein Profiling institute of the Nancy and Stephen Grand Israel National Center for Personalized Medicine, Weizmann Institute of Science, Israel
| | - Nili Dezorella
- Electron Microscopy Unit, Chemical Research Support, Weizmann Institute of Science, Israel
| | - Tali Dadosh
- Electron Microscopy Unit, Chemical Research Support, Weizmann Institute of Science, Israel
| | - Sharon G Wolf
- Electron Microscopy Unit, Chemical Research Support, Weizmann Institute of Science, Israel
| | - Maxim Itkin
- Life Sciences Core Facilities, Weizmann Institute of Science, Israel
| | - Sergey Malitsky
- Life Sciences Core Facilities, Weizmann Institute of Science, Israel
| | - Alexander Brandis
- Life Sciences Core Facilities, Weizmann Institute of Science, Israel
| | - Naama Barkai
- Department of Molecular Genetics, Weizmann Institute of Science, Israel
| | - Rubén Fernández-Busnadiego
- University Medical Center Göttingen, Institute for Neuropathology, 37077, Germany
- Collaborative Research Center 1190 "Compartmental Gates and Contact Sites in Cells", University of Göttingen, Germany
- Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen, 37077, Germany
- Faculty of Physics, University of Göttingen, 37077, Germany
| | - Amit R Reddi
- School of Chemistry and Biochemistry, Georgia Institute of Technology, USA
| | - Peter Rehling
- Department of Cellular Biochemistry, University Medical Center Göttingen, Germany
- Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Translational Neuroinflammation and Automated Microscopy, Germany
- Max Planck Institute for Multidisciplinary Sciences, D-37077, Germany
| | - Doron Rapaport
- Interfaculty Institute of Biochemistry, University of Tuebingen, Germany
| | - Maya Schuldiner
- Department of Molecular Genetics, Weizmann Institute of Science, Israel
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4
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Wang T, Wang C, Wang J, Wang B. An Intrabody against B-Cell Receptor-Associated Protein 31 (BAP31) Suppresses the Glycosylation of the Epithelial Cell-Adhesion Molecule (EpCAM) via Affecting the Formation of the Sec61-Translocon-Associated Protein (TRAP) Complex. Int J Mol Sci 2023; 24:14787. [PMID: 37834237 PMCID: PMC10572819 DOI: 10.3390/ijms241914787] [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: 07/31/2023] [Revised: 09/12/2023] [Accepted: 09/21/2023] [Indexed: 10/15/2023] Open
Abstract
The epithelial cell-adhesion molecule (EpCAM) is hyperglycosylated in carcinoma tissue and the oncogenic function of EpCAM primarily depends on the degree of glycosylation. Inhibiting EpCAM glycosylation is expected to have an inhibitory effect on cancer. We analyzed the relationship of BAP31 with 84 kinds of tumor-associated antigens and found that BAP31 is positively correlated with the protein level of EpCAM. Triple mutations of EpCAM N76/111/198A, which are no longer modified by glycosylation, were constructed to determine whether BAP31 has an effect on the glycosylation of EpCAM. Plasmids containing different C-termini of BAP31 were constructed to identify the regions of BAP31 that affects EpCAM glycosylation. Antibodies against BAP31 (165-205) were screened from a human phage single-domain antibody library and the effect of the antibody (VH-F12) on EpCAM glycosylation and anticancer was investigated. BAP31 increases protein levels of EpCAM by promoting its glycosylation. The amino acid region from 165 to 205 in BAP31 plays an important role in regulating the glycosylation of EpCAM. The antibody VH-F12 significantly inhibited glycosylation of EpCAM which, subsequently, reduced the adhesion of gastric cancer cells, inducing cytotoxic autophagy, inhibiting the AKT-PI3K-mTOR signaling pathway, and, finally, resulting in proliferation inhibition both in vitro and in vivo. Finally, we clarified that BAP31 plays a key role in promoting N-glycosylation of EpCAM by affecting the Sec61 translocation channels. Altogether, these data implied that BAP31 regulates the N-glycosylation of EpCAM and may represent a potential therapeutic target for cancer therapy.
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Affiliation(s)
| | | | | | - Bing Wang
- College of Life Science and Health, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang 110819, China; (T.W.); (C.W.); (J.W.)
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5
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Jiang X, Li G, Zhu B, Zang J, Lan T, Jiang R, Wang B. p20BAP31 induces cell apoptosis via both AIF caspase-independent and the ROS/JNK mitochondrial pathway in colorectal cancer. Cell Mol Biol Lett 2023; 28:25. [PMID: 36977989 PMCID: PMC10052827 DOI: 10.1186/s11658-023-00434-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 03/01/2023] [Indexed: 03/30/2023] Open
Abstract
Abstract
Background
During cell apoptosis, the C-terminus of BAP31 is cleaved by caspase-8 and generates p20BAP31, which has been shown to induce an apoptotic pathway between the endoplasmic reticulum (ER) and mitochondria. However, the underlying mechanisms of p20BAP31 in cell apoptosis remains unclear.
Methods
We compared the effects of p20BAP31 on cell apoptosis in six cell lines and selected the most sensitive cells. Functional experiments were conducted, including Cell Counting Kit 8 (CCK-8), reactive oxygen species (ROS), and mitochondrial membrane potential (MMP) assay. Then, cell cycle and apoptosis were investigated by flow cytometry and verified by immunoblotting. Next, NOX inhibitors (ML171 and apocynin), ROS scavenger (NAC), JNK inhibitor (SP600125), and caspase inhibitor (Z-VAD-FMK) were used to further investigate the underlying mechanisms of p20BAP31 on cell apoptosis. Finally, apoptosis-inducing factor (AIF) translocation from the mitochondria to the nuclei was verified by immunoblotting and immunofluorescence assay.
Results
We found that overexpression of p20BAP31 indeed induced apoptosis and had a much greater sensitivity in HCT116 cells. Furthermore, the overexpression of p20BAP31 inhibited cell proliferation by causing S phase arrest. Further study revealed that p20BAP31 reduced MMP, with a significant increase in ROS levels, accompanied by the activation of the MAPK signaling pathway. Importantly, the mechanistic investigation indicated that p20BAP31 induces mitochondrial-dependent apoptosis by activating the ROS/JNK signaling pathway and induces caspase-independent apoptosis by promoting the nuclear translocation of AIF.
Conclusions
p20BAP31 induced cell apoptosis via both the ROS/JNK mitochondrial pathway and AIF caspase-independent pathway. Compared with antitumor drugs that are susceptible to drug resistance, p20BAP31 has unique advantages for tumor therapy.
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6
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Li G, Jiang X, Liang X, Hou Y, Zang J, Zhu B, Jia C, Niu K, Liu X, Xu X, Jiang R, Wang B. BAP31 regulates the expression of ICAM-1/VCAM-1 via MyD88/NF-κB pathway in acute lung injury mice model. Life Sci 2023; 313:121310. [PMID: 36549351 DOI: 10.1016/j.lfs.2022.121310] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022]
Abstract
AIMS The cell adhesion molecules (CAMs) that mediate neutrophil-endothelium cell adhesion are deeply involved in the pathogenesis of acute lung injury (ALI). B-cell receptor associated protein 31 (BAP31) has been reported to engage in the expression of some CAMs. This study was undertaken to explore whether BAP31 in endotheliocyte affects the pathological process of ALI by regulating CAMs, and its possible mechanism. MAIN METHODS Our study used the shBAP31 endothelium cell lines and endothelial-specific BAP31 conditional knockdown mice constructed via Cre/loxP system. Hematoxylin and eosin staining was used to observe the histopathological manifestations. The adhesion of neutrophils to vascular wall was examined by intravital microscopy. The nuclear translocation of NF-κB was observed by immunofluorescence staining assay. Flow cytometric, real-time polymerase chain reaction and Western blot assay were performed to determine the expression of CAMs and key proteins in MyD88/NF-κB-related signaling pathway. Luciferase reporter and chromatin immunoprecipitation assay were analyzed for transcriptional activity of ICAM-1 and VCAM-1. KEY FINDINGS Mechanistic investigations indicated that endothelium-specific BAP31 depletion dramatically reduced the capacity of neutrophils adherence to endothelial cells (ECs), which was mainly attributed to the significant downregulation of ICAM-1 (p < 0.05) and VCAM-1 (p < 0.05) expression. Interestingly, BAP31 knockdown apparently deactivated MyD88/TRAF6-mediated TAK1/NF-κB and PI3K/Akt signaling cascades, resulting in the inhibition of NF-κB activation and nuclear translocation. SIGNIFICANCE Our data furnished convincing evidence that BAP31 deficiency performs a mitigative effect on ALI by decreasing neutrophils-ECs adhesion. These findings identified BAP31 as a promising protein for regulating the pathogenesis process of ALI.
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Affiliation(s)
- Guoxun Li
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Xiaohan Jiang
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Xiaoyu Liang
- Southern Methodist University, Dallas, TX 75275, USA
| | - Yue Hou
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Jingnan Zang
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Benzhi Zhu
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Congcong Jia
- Liaoning Provincial Key Laboratory for Research on the Pathogenic Mechanisms of Neurological Diseases, The First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
| | - Kunwei Niu
- Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle Road, Xi'an, Shaanxi 710032, China
| | - Xia Liu
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Xiaoli Xu
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Rui Jiang
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China.
| | - Bing Wang
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China.
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Wei X, Li L, Zhao J, Huo Y, Hu X, Lu J, Pi J, Zhang W, Xu L, Yao Y, Xu J. BAP31 depletion inhibited adipogenesis, repressed lipolysis and promoted lipid droplets abnormal growth via attenuating Perilipin1 proteasomal degradation. Int J Biol Sci 2023; 19:1713-1730. [PMID: 37063427 PMCID: PMC10092757 DOI: 10.7150/ijbs.82178] [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: 12/27/2022] [Accepted: 02/25/2023] [Indexed: 04/18/2023] Open
Abstract
BAP31 expression was robustly decreased in obese white adipose tissue (WAT). To investigate the roles of BAP31 in lipid metabolism, adipocyte-specific conditional knockout mice (BAP31-ASKO) were generated. BAP31-ASKO mice grow normally as controls, but exhibited reduced lipid accumulation in WAT. Histomorphometric analysis reported increased adipocyte size in BAP31-ASKO mice. Mouse embryonic fibroblasts (MEFs) were induced to differentiation to adipocytes, showed reduced induction of adipogenic markers and attenuated adipogenesis in BAP31-deficient MEFs. BAP31-deficiency inhibited fasting-induced PKA signaling activation and the fasting response. β3-adrenergic receptor agonist-induced lipolysis also was reduced, accompanied by reduced free-fatty acids and glycerol release, and impaired agonist-induced lipolysis from primary adipocytes and adipose explants. BAP31 interacts with Perilipin1 via C-terminal cytoplasmic portion on lipid droplets (LDs) surface. Depletion of BAP31 repressed Perilipin1 proteasomal degradation, enhanced Perilipin1 expression and blocked LDs degradation, which promoted LDs abnormal growth and supersized LDs formation, resulted in adipocyte expansion, thus impaired insulin signaling and aggravated pro-inflammation in WAT. BAP31-deficiency increased phosphatidylcholine/phosphatidylethanolamine ratio, long chain triglycerides and most phospholipids contents. Overall, BAP31-deficiency inhibited adipogenesis and lipid accumulation in WAT, decreased LDs degradation and promoted LDs abnormal growth, pointing the critical roles in modulating LDs dynamics and homeostasis via proteasomal degradation system in adipocytes.
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Affiliation(s)
- Xueying Wei
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang, 110819, Liaoning, China
| | - Liya Li
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang, 110819, Liaoning, China
| | - Jie Zhao
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang, 110819, Liaoning, China
| | - Yan Huo
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang, 110819, Liaoning, China
| | - Xiaodi Hu
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang, 110819, Liaoning, China
| | - Jingyi Lu
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang, 110819, Liaoning, China
| | - Jingbo Pi
- School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Wei Zhang
- Department of Hepatobiliary Surgery, General Hospital of Northern Theater Command of the Chinese People's Liberation Army, Shenyang, 110016, Liaoning, China
| | - Lisheng Xu
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, 110819, Liaoning, China
| | - Yudong Yao
- Department of Electrical and Computer Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Jialin Xu
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang, 110819, Liaoning, China
- ✉ Corresponding author: Jialin Xu, Ph. D., Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang, 110819, Liaoning, China Phone: (+86) 2483656117, E-mail:
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8
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Li GX, Jiang XH, Zang JN, Zhu BZ, Jia CC, Niu KW, Liu X, Jiang R, Wang B. B-cell receptor associated protein 31 deficiency decreases the expression of adhesion molecule CD11b/CD18 and PSGL-1 in neutrophils to ameliorate acute lung injury. Int J Biochem Cell Biol 2022; 152:106299. [PMID: 36210579 PMCID: PMC9484107 DOI: 10.1016/j.biocel.2022.106299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 08/31/2022] [Accepted: 09/18/2022] [Indexed: 11/23/2022]
Abstract
Acute lung injury (ALI) and its more severe condition acute respiratory distress syndrome (ARDS) are critical life-threatening disorders characterized by an excessive influx of neutrophils into the alveolar space. Neutrophil infiltration is a multi-step process involving the sequential engagement of adhesion molecules. The adhesion molecule CD11b/CD18 acts as an important role in the recruitment of neutrophils to lung tissues in the ALI model. B-cell receptor associated protein 31 (BAP31), an endoplasmic reticulum transmembrane protein, has been reported to regulate the cellular anterograde transport of CD11b/CD18 in human neutrophils. To explore how BAP31 regulates CD11b/CD18 in mouse neutrophils, we constructed myeloid-specific BAP31 knockdown mice in this study. Biological investigations indicated that BAP31 deficiency could significantly alleviated lung injury, as evidenced by the improved histopathological morphology, reduced pulmonary wet/dry weight ratio, inhibited myeloperoxidase level and decreased neutrophil counts in the bronchoalveolar lavage fluid. Further studies clarified that BAP31 deficiency obviously down-regulated the expression of CD11b/CD18 and P-selectin glycoprotein ligand-1 (PSGL-1) by deactivating the nuclear factor kappa B (NF-κB) signaling pathway. Collectively, our results revealed that BAP31 depletion exerted a protective effect on ALI, which was possibly dependent on the attenuation of neutrophil adhesion and infiltration by blocking the expression of adhesion molecules CD11b/CD18 and PSGL-1. These findings implied the potential of BAP31 as an appealing protein to mediate the occurrence of ALI.
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Affiliation(s)
- Guo-Xun Li
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Xiao-Han Jiang
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Jing-Nan Zang
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Ben-Zhi Zhu
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Cong-Cong Jia
- Liaoning Provincial Key Laboratory for Research on the Pathogenic Mechanisms of Neurological Diseases, The First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
| | - Kun-Wei Niu
- Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle Road, Xi'an, Shaanxi 710032, China
| | - Xia Liu
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China
| | - Rui Jiang
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China.
| | - Bing Wang
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China.
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9
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Rashidmayvan M, Sahebi R, Ghayour-Mobarhan M. Long non-coding RNAs: a valuable biomarker for metabolic syndrome. Mol Genet Genomics 2022; 297:1169-1183. [PMID: 35854006 DOI: 10.1007/s00438-022-01922-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 06/25/2022] [Indexed: 10/17/2022]
Abstract
Long non-coding RNAs (lncRNAs) have become important regulators of gene expression because they affect a wide range of biological processes, such as cell growth, death, differentiation, and aging. More and more evidence suggests that lncRNAs play a role in maintaining metabolic homeostasis. When certain lncRNAs are out of balance, metabolic disorders like diabetes, obesity, and heart disease get worse. In this review, we talk about what we know about how lncRNAs control metabolism, with a focus on diseases caused by long-term inflammation and the characteristics of the metabolic syndrome. We looked at lncRNAs and their molecular targets in the pathogenesis of signaling pathways. We also talked about how lncRNAs are becoming more and more interesting as diagnostic and therapeutic targets for improving metabolic homeostasis.
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Affiliation(s)
- Mohammad Rashidmayvan
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Reza Sahebi
- Metabolic Syndrome Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Ghayour-Mobarhan
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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10
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Huo Y, Zhao X, Zhao J, Kong X, Li L, Yuan T, Xu J. Hypoglycemic effects of Fu-Pen-Zi (Rubus chingii Hu) fruit extracts in streptozotocin-induced type 1 diabetic mice. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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11
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Hepatocyte-Specific Deficiency of BAP31 Amplified Acetaminophen-Induced Hepatotoxicity via Attenuating Nrf2 Signaling Activation in Mice. Int J Mol Sci 2021; 22:ijms221910788. [PMID: 34639126 PMCID: PMC8509202 DOI: 10.3390/ijms221910788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/28/2021] [Accepted: 09/30/2021] [Indexed: 01/18/2023] Open
Abstract
Liver-specific deficiency of B-cell receptor-associated protein 31 knockout mice (BAP31-LKO) and the littermates were injected with acetaminophen (APAP), markers of liver injury, and the potential molecular mechanisms were determined. In response to APAP overdose, serum aspartate aminotransferase and alanine aminotransferase levels were increased in BAP31-LKO mice than in wild-type controls, accompanied by enhanced liver necrosis. APAP-induced apoptosis and mortality were increased. Hepatic glutathione was decreased (1.60 ± 0.31 μmol/g tissue in WT mice vs. 0.85 ± 0.14 μmol/g tissue in BAP31-LKO mice at 6 h, p < 0.05), along with reduced glutathione reductase activity and superoxide dismutase; while malondialdehyde was significantly induced (0.41 ± 0.03 nmol/mg tissue in WT mice vs. 0.50 ± 0.05 nmol/mg tissue in BAP31-LKO mice for 6 h, p < 0.05). JNK signaling activation and APAP-induced hepatic inflammation were increased in BAP31-LKO mice. The mechanism research revealed that BAP31-deficiency decreased Nrf2 mRNA stability (half-life of Nrf2 mRNA decreased from ~1.3 h to ~40 min) and miR-223 expression, led to reduced nuclear factor erythroid 2-related factor 2 (Nrf2) signaling activation and antioxidant genes induction. BAP31-deficiency decreased mitochondrial membrane potentials, reduced mitochondria-related genes expression, and resulted in mitochondrial dysfunction in the liver. Conclusions: BAP31-deficiency reduced the antioxidant response and Nrf2 signaling activation via reducing Nrf2 mRNA stabilization, enhanced JNK signaling activation, hepatic inflammation, and apoptosis, amplified APAP-induced hepatotoxicity in mice.
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12
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Li T, Su G, Zhao Y. Anti-hepatic fibrosis effects of AD-2 affecting the Raf-MEK signaling pathway and inflammatory factors in thioacetamide-induced liver injury. J Food Sci 2021; 86:2753-2765. [PMID: 33928646 DOI: 10.1111/1750-3841.15731] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 02/12/2021] [Accepted: 03/22/2021] [Indexed: 02/06/2023]
Abstract
25-Hydroxylprotopanaxadiol-3β, 12β, 20-triol (25-OH-PPD or AD-2) belongs to dammarane ginsenoside, and is commonly obtained from the acidic hydrolysate of total ginsensides of Panax ginseng. This study investigated the potential mechanism of AD-2 toward improving thioacetamide (TAA)-induced hepatic fibrosis in mice. Mice were divided into seven groups: control group, TAA model group, TAA + AD-2 (5, 10, and 20 mg/kg) groups, TAA + silymarin (100 mg/kg) group, and TAA + Fu Fang Biejia (FFBj; 300 mg/kg) group. All mice were treated to intraperitoneal TAA injection to establish a hepatic fibrosis model, and drugs were administered orally. The mechanism and related pathways underlying the AD-2-mediated action against hepatic fibrosis were explored by Western blotting and immunohistochemical staining. After AD-2 treatment, the expression levels of Lipin-1, SREBP1, and F4/80 significantly decreased, meanwhile the protein expressions levels of IL1β, IL1R1, IL18, Bax, Bid, Bcl-2, and cFlips also decreased. Furthermore, AD-2 inhibited RAF and MEK pathways. The results demonstrate that AD-2 can alleviate hepatic fibrosis. The mechanism is likely related to the regulation of lipid accumulation, inflammatory response, apoptosis pathway, and Raf-MEK signaling pathways, which provide a basis for clinical research for the treatment of hepatic fibrosis. PRACTICAL APPLICATION: Ginsenoside is one of the main active ingredients of ginseng, and can alleviate the symptoms of various diseases, for example, hepatic fibrosis. This paper mainly used Western blotting to explore its possible mechanism of action. The goal was to provide a reference for the development of traditional Chinese medicines for hepatic fibrosis.
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Affiliation(s)
- Tao Li
- Shenyang Pharmaceutical University, Shenyang, China
| | - GuangYue Su
- Shenyang Pharmaceutical University, Shenyang, China
| | - YuQing Zhao
- Shenyang Pharmaceutical University, Shenyang, China
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13
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Quistgaard EM. BAP31: Physiological functions and roles in disease. Biochimie 2021; 186:105-129. [PMID: 33930507 DOI: 10.1016/j.biochi.2021.04.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 12/22/2022]
Abstract
B-cell receptor-associated protein 31 (BAP31 or BCAP31) is a ubiquitously expressed transmembrane protein found mainly in the endoplasmic reticulum (ER), including in mitochondria-associated membranes (MAMs). It acts as a broad-specificity membrane protein chaperone and quality control factor, which can promote different fates for its clients, including ER retention, ER export, ER-associated degradation (ERAD), or evasion of degradation, and it also acts as a MAM tetherer and regulatory protein. It is involved in several cellular processes - it supports ER and mitochondrial homeostasis, promotes proliferation and migration, plays several roles in metabolism and the immune system, and regulates autophagy and apoptosis. Full-length BAP31 can be anti-apoptotic, but can also mediate activation of caspase-8, and itself be cleaved by caspase-8 into p20-BAP31, which promotes apoptosis by mobilizing ER calcium stores at MAMs. BAP31 loss-of-function mutations is the cause of 'deafness, dystonia, and central hypomyelination' (DDCH) syndrome, characterized by severe neurological symptoms and early death. BAP31 is furthermore implicated in a growing number of cancers and other diseases, and several viruses have been found to target it to promote their survival or life cycle progression. The purpose of this review is to provide an overview and examination of the basic properties, functions, mechanisms, and roles in disease of BAP31.
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Affiliation(s)
- Esben M Quistgaard
- Department of Molecular Biology and Genetics - DANDRITE, Aarhus University, Gustav Wieds Vej 10, DK-8000 Aarhus C, Denmark.
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14
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Further delineation of BCAP31-linked intellectual disability: description of 17 new families with LoF and missense variants. Eur J Hum Genet 2021; 29:1405-1417. [PMID: 33603160 DOI: 10.1038/s41431-021-00821-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 12/17/2020] [Accepted: 01/26/2021] [Indexed: 11/08/2022] Open
Abstract
The BCAP31 gene, located at Xq28, encodes BAP31, which plays a role in ER-to-Golgi anterograde transport. To date, BCAP31 pathogenic variants have been reported in 12 male cases from seven families (six loss of function (LoF) and one missense). Patients had severe intellectual disability (ID), dystonia, deafness, and central hypomyelination, delineating a so-called deafness, dystonia and cerebral hypomyelination syndrome (DDCH). Female carriers are mostly asymptomatic but may present with deafness. BCAP31 is flanked by the SLC6A8 and ABCD1 genes. Contiguous deletions of BCAP31 and ABCD1 and/or SLC6A8 have been described in 12 patients. Patients with deletions including BCAP31 and SLC6A8 have the same phenotype as BCAP31 patients. Patients with deletions of BCAP31 and ABCD1 have contiguous ABCD1 and DXS1375E/BCAP31 deletion syndrome (CADDS), and demonstrate a more severe neurological phenotype with cholestatic liver disease and early death. We report 17 novel families, 14 with intragenic BCAP31 variants (LoF and missense) and three with a deletion of BCAP31 and adjacent genes (comprising two CADDS patients, one male and one symptomatic female). Our study confirms the phenotype reported in males with intragenic LoF variants and shows that males with missense variants exhibit a milder phenotype. Most patients with a LoF pathogenic BCAP31 variant have permanent or transient liver enzyme elevation. We further demonstrate that carrier females (n = 10) may have a phenotype comprising LD, ID, and/or deafness. The male with CADDS had a severe neurological phenotype, but no cholestatic liver disease, and the symptomatic female had moderate ID and cholestatic liver disease.
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15
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Namusamba M, Li Z, Zhang Q, Wang C, Wang T, Wang B. Biological roles of the B cell receptor-associated protein 31: Functional Implication in Cancer. Mol Biol Rep 2021; 48:773-786. [PMID: 33439410 DOI: 10.1007/s11033-020-06123-w] [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: 02/25/2020] [Accepted: 12/22/2020] [Indexed: 10/22/2022]
Abstract
BAP31 is a ubiquitously expressed integral membrane protein of the endoplasmic reticulum. BAP31 is involved in various biological and molecular processes, including protein transport, viral processing, apoptosis signaling, MHC 1 antigen processing and presentation, mitochondria and ER calcium regulation, and proteasomal protein degradation. We employed a BAP31 interaction search using STRING and inBioMap™ protein-protein interaction networks, and the Metabolic Atlas, which revealed molecular and metabolic interactors involved in various pathways essential for cell growth, cell survival, and disease development. BAP31, as a chaperone and resident protein of the ER, was reported in the development of some central nervous system disorders and metabolic diseases about AD, ALS, and Liver disease. In addition, BAP31 is overexpressed in many cancers. Furthermore, research around BAP31 involvement in cancer has taken up a shape, focusing on its roles in cancer cell survival, disease prognosis, and targeted treatment. Here, we address published data on the Biological roles of BAP31 in both health and disease. We present an analytical description of BAP31 expression and functional implication in some human cancers and the impact of its expression and regulation while it models as a potential target in cancer therapy. Besides, a profound understanding of BAP31 is insightful of the gap between cancer development and neurodegeneration, thus generating novel ideas surrounding the link between the two different cell phenomena.
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Affiliation(s)
- Mwichie Namusamba
- College of Life Science and Health, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang, Liaoning Province, 110819, People's Republic of China
| | - Zhi Li
- College of Life Science and Health, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang, Liaoning Province, 110819, People's Republic of China
| | - Qi Zhang
- College of Life Science and Health, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang, Liaoning Province, 110819, People's Republic of China
| | - Changli Wang
- College of Life Science and Health, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang, Liaoning Province, 110819, People's Republic of China
| | - Tianyi Wang
- College of Life Science and Health, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang, Liaoning Province, 110819, People's Republic of China.
| | - Bing Wang
- College of Life Science and Health, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang, Liaoning Province, 110819, People's Republic of China.
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16
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Zhang X, Jiang D, Yang S, Sun Y, Liu Y, Shi J, Hu C, Pan J, Liu T, Jin B, Yang K. BAP31 Promotes Tumor Cell Proliferation by Stabilizing SERPINE2 in Hepatocellular Carcinoma. Front Cell Dev Biol 2020; 8:607906. [PMID: 33363167 PMCID: PMC7759511 DOI: 10.3389/fcell.2020.607906] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 11/16/2020] [Indexed: 12/16/2022] Open
Abstract
Hepatocellular carcinoma (HCC) patients are mostly diagnosed at an advanced stage, resulting in systemic therapy and poor prognosis. Therefore, the identification of a novel treatment target for HCC is important. B-cell receptor-associated protein 31 (BAP31) has been identified as a cancer/testis antigen; however, BAP31 function and mechanism of action in HCC remain unclear. In this study, BAP31 was demonstrated to be upregulated in HCC and correlated with the clinical stage. BAP31 overexpression promoted HCC cell proliferation and colony formation in vitro and tumor growth in vivo. RNA-sequence (RNA-seq) analysis demonstrated that serpin family E member 2 (SERPINE2) was downregulated in BAP31-knockdown HCC cells. Coimmunoprecipitation and immunofluorescence assays demonstrated that BAP31 directly binds to SERPINE2. The inhibition of SERPINE2 significantly decreased the BAP31-induced cell proliferation and colony formation of HCC cells and phosphorylation of Erk1/2 and p38. Moreover, multiplex immunohistochemistry staining of the HCC tissue microarray showed positive associations between the expression levels of BAP31, SERPINE2, its downstream gene LRP1, and a tumor proliferation marker, Ki-67. The administration of anti-BAP31 antibody significantly inhibited HCC cell xenograft tumor growth in vivo. Thus, these findings suggest that BAP31 promotes tumor cell proliferation by stabilizing SERPINE2 and can serve as a promising candidate therapeutic target for HCC.
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Affiliation(s)
- Xiyang Zhang
- Department of Immunology, The Fourth Military Medical University, Xi'an, China
| | - Dongbo Jiang
- Department of Immunology, The Fourth Military Medical University, Xi'an, China
| | - Shuya Yang
- Department of Immunology, The Fourth Military Medical University, Xi'an, China
| | - Yuanjie Sun
- Department of Immunology, The Fourth Military Medical University, Xi'an, China
| | - Yang Liu
- Department of Immunology, The Fourth Military Medical University, Xi'an, China
| | - Jingqi Shi
- Department of Immunology, The Fourth Military Medical University, Xi'an, China
| | - Chenchen Hu
- Department of Immunology, The Fourth Military Medical University, Xi'an, China
| | - Jingyu Pan
- Department of Immunology, The Fourth Military Medical University, Xi'an, China
| | - Tianyue Liu
- Department of Immunology, The Fourth Military Medical University, Xi'an, China
| | - Boquan Jin
- Department of Immunology, The Fourth Military Medical University, Xi'an, China
| | - Kun Yang
- Department of Immunology, The Fourth Military Medical University, Xi'an, China
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17
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Pirfenidone alleviates lipopolysaccharide-induced lung injury by accentuating BAP31 regulation of ER stress and mitochondrial injury. J Autoimmun 2020; 112:102464. [DOI: 10.1016/j.jaut.2020.102464] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 04/10/2020] [Accepted: 04/10/2020] [Indexed: 12/15/2022]
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18
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Jia CC, Li G, Jiang R, Liu X, Yuan Q, Le W, Hou Y, Wang B. B-Cell Receptor-Associated Protein 31 Negatively Regulates the Expression of Monoamine Oxidase A Via R1. Front Mol Biosci 2020; 7:64. [PMID: 32426368 PMCID: PMC7212379 DOI: 10.3389/fmolb.2020.00064] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 03/25/2020] [Indexed: 11/13/2022] Open
Abstract
B-cell receptor-associated protein 31 (Bap31) is a three trans-membrane protein of the endoplasmic reticulum (ER). Patients who have loss of function of Bap31 suffered from X-linked syndrome, such as motor and intellectual disabilities, dystonia, and sensorineural deafness. However, the underlying mechanism of Bap31 on X-linked syndrome remains unclear. Here, we found that a total of 21 proteins (9 up-regulated and 12 down-regulated proteins) related with X-linked syndrome were screened from shRNA-Bap31 transfected cells with the isobaric tags for relative and absolute quantification (iTRAQ) technique. One gene with the greatest change trend, monoamine oxidase A (MAOA), was identified. MAOA expression was up-regulated by Bap31 knockdown. However, Bap31 did not affect the ubiquitination degradation of MAOA protein. Of note, Bap31 selectively regulated the expression of cell division cycle associated 7-like (R1/RAM2/CDCA7L/JPO2, a transcriptional repressor of MAOA) and the binding activity of R1 with MAOA promoter, thereby affecting MAOA expression. This study demonstrates the molecular mechanisms of Bap31 in MAOA via R1 and supports the potential function of Bap31 on X-linked syndrome.
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Affiliation(s)
- Cong-Cong Jia
- College of Life and Health Sciences, Northeastern University, Shenyang, China.,Center for Clinical Research on Neurological Diseases, The First Affiliated Hospital, Dalian Medical University, Dalian, China.,Liaoning Provincial Key Laboratory for Research on the Pathogenic Mechanisms of Neurological Diseases, The First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Guoxun Li
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Rui Jiang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Xia Liu
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Qing Yuan
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Weidong Le
- Center for Clinical Research on Neurological Diseases, The First Affiliated Hospital, Dalian Medical University, Dalian, China.,Liaoning Provincial Key Laboratory for Research on the Pathogenic Mechanisms of Neurological Diseases, The First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Yue Hou
- College of Life and Health Sciences, Northeastern University, Shenyang, China.,Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, China
| | - Bing Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
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19
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Li R, Toan S, Zhou H. Role of mitochondrial quality control in the pathogenesis of nonalcoholic fatty liver disease. Aging (Albany NY) 2020; 12:6467-6485. [PMID: 32213662 PMCID: PMC7185127 DOI: 10.18632/aging.102972] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 03/19/2020] [Indexed: 02/07/2023]
Abstract
Nutrient oversupply and mitochondrial dysfunction play central roles in nonalcoholic fatty liver disease (NAFLD). The mitochondria are the major sites of β-oxidation, a catabolic process by which fatty acids are broken down. The mitochondrial quality control (MQC) system includes mitochondrial fission, fusion, mitophagy and mitochondrial redox regulation, and is essential for the maintenance of the functionality and structural integrity of the mitochondria. Excessive and uncontrolled production of reactive oxygen species (ROS) in the mitochondria damages mitochondrial components, including membranes, proteins and mitochondrial DNA (mtDNA), and triggers the mitochondrial pathway of apoptosis. The functionality of some damaged mitochondria can be restored by fusion with normally functioning mitochondria, but when severely damaged, mitochondria are segregated from the remaining functional mitochondrial network through fission and are eventually degraded via mitochondrial autophagy, also called as mitophagy. In this review, we describe the functions and mechanisms of mitochondrial fission, fusion, oxidative stress and mitophagy in the development and progression of NAFLD.
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Affiliation(s)
- Ruibing Li
- Department of Clinical Laboratory Medicine, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Sam Toan
- Department of Chemical Engineering, University of Minnesota-Duluth, Duluth, MN 55812, USA
| | - Hao Zhou
- Medical School of Chinese PLA, Chinese PLA General Hospital, Beijing 100853, China
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20
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Liu X, Jiao K, Jia CC, Li GX, Yuan Q, Xu JK, Hou Y, Wang B. BAP31 regulates IRAK1-dependent neuroinflammation in microglia. J Neuroinflammation 2019; 16:281. [PMID: 31883536 PMCID: PMC6935200 DOI: 10.1186/s12974-019-1661-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 11/26/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Microglia, the mononuclear immune cells of the central nervous system (CNS), are essential for the maintenance of CNS homeostasis. BAP31, a resident and ubiquitously expressed protein of the endoplasmic reticulum, serves as a sorting factor for its client proteins, mediating the subsequent export, retention, and degradation or survival. Recently, BAP31 has been defined as a regulatory molecule in the CNS, but the function of BAP31 in microglia has yet to be determined. In the present study, we investigated whether BAP31 is involved in the inflammatory response of microglia. METHODS This study used the BV2 cell line and BAP31 conditional knockdown mice generated via the Cre/LoxP system. A BAP31 knockdown experiment was performed to elucidate the role of BAP31 in the endogenous inflammatory cytokine production by microglial BV2 cells. A mouse model of lipopolysaccharide (LPS)-induced cognitive impairment was established to evaluate the neuroprotective effect of BAP31 against neuroinflammation-induced memory deficits. Behavioral alterations were assessed with the open field test (OFT), Y maze, and Morris water maze. The activation of microglia in the hippocampus of mice was observed by immunohistochemistry. Western blot, enzyme-linked immunosorbent assay (ELISA), immunofluorescence staining, and reverse transcription quantitative real-time polymerase chain reaction (RT-PCR) were used to clarify the mechanisms. RESULTS BAP31 deficiency upregulates LPS-induced proinflammatory cytokines in BV2 cells and mice by upregulating the protein level of IRAK1, which in turn increases the translocation and transcriptional activity of NF-κB p65 and c-Jun, and moreover, knockdown of IRAK1 or use of an IRAK1 inhibitor reverses these functions. In the cognitive impairment animal model, the BAP31 knockdown mice displayed increased severity in memory deficiency accompanied by an increased expression of proinflammatory factors in the hippocampus. CONCLUSIONS These findings indicate that BAP31 may modulate inflammatory cytokines and cognitive impairment induced by neuroinflammation through IRAK1, which demonstrates that BAP31 plays an essential role in microglial inflammation and prevention of memory deficits caused by neuroinflammation.
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Affiliation(s)
- Xia Liu
- College of Life and Health Science, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang, Liaoning, 110819, People's Republic of China
| | - Kun Jiao
- College of Life and Health Science, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang, Liaoning, 110819, People's Republic of China
| | - Cong-Cong Jia
- College of Life and Health Science, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang, Liaoning, 110819, People's Republic of China
| | - Guo-Xun Li
- College of Life and Health Science, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang, Liaoning, 110819, People's Republic of China
| | - Qing Yuan
- College of Life and Health Science, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang, Liaoning, 110819, People's Republic of China
| | - Ji-Kai Xu
- College of Life and Health Science, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang, Liaoning, 110819, People's Republic of China
| | - Yue Hou
- College of Life and Health Science, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang, Liaoning, 110819, People's Republic of China.
| | - Bing Wang
- College of Life and Health Science, Northeastern University, 195 Chuangxin Road, Hunnan District, Shenyang, Liaoning, 110819, People's Republic of China.
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21
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Luo M, Willis WT, Coletta DK, Langlais PR, Mengos A, Ma W, Finlayson J, Wagner GR, Shi CX, Mandarino LJ. Deletion of the Mitochondrial Protein VWA8 Induces Oxidative Stress and an HNF4α Compensatory Response in Hepatocytes. Biochemistry 2019; 58:4983-4996. [PMID: 31702900 DOI: 10.1021/acs.biochem.9b00863] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
von Willebrand A domain-containing protein 8 (VWA8) is a poorly characterized, mitochondrial matrix-targeted protein with an AAA ATPase domain and ATPase activity that increases in livers of mice fed a high-fat diet. This study was undertaken to use CRISPR/Cas9 to delete VWA8 in cultured mouse hepatocytes and gain insight into its function. Unbiased omics techniques and bioinformatics were used to guide subsequent assays, including the assessment of oxidative stress and the determination of bioenergetic capacity. Metabolomics analysis showed VWA8 null cells had higher levels of oxidative stress and protein degradation; assays of hydrogen peroxide production revealed higher levels of production of reactive oxygen species (ROS). Proteomics and transcriptomics analyses showed VWA8 null cells had higher levels of expression of mitochondrial proteins (electron transport-chain Complex I, ATP synthase), peroxisomal proteins, and lipid transport proteins. The pattern of higher protein abundance in the VWA8 null cells could be explained by a higher level of hepatocyte nuclear factor 4 α (HNF4α) expression. Bioenergetic assays showed higher rates of carbohydrate oxidation and mitochondrial and nonmitochondrial lipid oxidation in intact and permeabilized cells. Inhibitor assays localized sites of ROS production to peroxisomes and NOX1/4. The rescue of VWA8 protein restored the wild-type phenotype, and treatment with antioxidants decreased the level of HNF4α expression. Thus, loss of VWA8 produces a mitochondrial defect that may be sensed by NOX4, leading to an increase in the level of ROS that results in a higher level of HNF4α. The compensatory HNF4α response results in a higher oxidative capacity and an even higher level of ROS production. We hypothesize that VWA8 is an AAA ATPase protein that plays a role in mitochondrial protein quality.
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Affiliation(s)
- Moulun Luo
- Division of Endocrinology, Department of Medicine , University of Arizona College of Medicine , Tucson , Arizona 85724 , United States
| | - Wayne T Willis
- Division of Endocrinology, Department of Medicine , University of Arizona College of Medicine , Tucson , Arizona 85724 , United States
| | - Dawn K Coletta
- Division of Endocrinology, Department of Medicine , University of Arizona College of Medicine , Tucson , Arizona 85724 , United States
| | - Paul R Langlais
- Division of Endocrinology, Department of Medicine , University of Arizona College of Medicine , Tucson , Arizona 85724 , United States
| | - April Mengos
- Mayo Clinic in Arizona , Scottsdale , Arizona 85259 , United States
| | - Wuqiong Ma
- Division of Endocrinology, Department of Medicine , University of Arizona College of Medicine , Tucson , Arizona 85724 , United States
| | - Jean Finlayson
- Division of Endocrinology, Department of Medicine , University of Arizona College of Medicine , Tucson , Arizona 85724 , United States
| | - Gregory R Wagner
- Metabolon, Inc. , Research Triangle Park , North Carolina 27709 , United States
| | - Chang-Xin Shi
- Mayo Clinic in Arizona , Scottsdale , Arizona 85259 , United States
| | - Lawrence J Mandarino
- Division of Endocrinology, Department of Medicine , University of Arizona College of Medicine , Tucson , Arizona 85724 , United States
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22
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Zhang J, Wang L, Xie W, Hu S, Zhou H, Zhu P, Zhu H. Melatonin attenuates ER stress and mitochondrial damage in septic cardiomyopathy: A new mechanism involving BAP31 upregulation and MAPK-ERK pathway. J Cell Physiol 2019; 235:2847-2856. [PMID: 31535369 DOI: 10.1002/jcp.29190] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 09/03/2019] [Indexed: 12/29/2022]
Abstract
Septic cardiomyopathy is associated with mitochondrial damage and endoplasmic reticulum (ER) dysfunction. However, the upstream mediator of mitochondrial injury and ER stress has not been identified and thus little drug is available to treat septic cardiomyopathy. Here, we explored the role of B-cell receptor-associated protein 31 (BAP31) in septic cardiomyopathy and figure out whether melatonin could attenuate sepsis-mediated myocardial depression via modulating BAP31. Lipopolysaccharide (LPS) was used to establish the septic cardiomyopathy model. Pathway analysis was performed via western blot, quantitative polymerase chain reaction and immunofluorescence. Mitochondrial function and ER stress were detected via enzyme-linked immunosorbent assay, western blot, and immunofluorescence. After exposure to LPS, cardiac function was reduced due to excessive inflammation response and extensive cardiomyocyte death. Mechanistically, melatonin treatment could dose-dependently improve cardiomyocyte viability via preserving mitochondrial function and reducing ER stress. Further, we found that BAP31 transcription was repressed by LPS whereas melatonin could restore BAP31 expression; this effect was dependent on the MAPK-ERK pathway. Inhibition of the ERK pathway and/or knockdown of BAP31 could attenuate the beneficial effects of melatonin on mitochondrial function and ER homeostasis under LPS stress. Altogether, our results indicate that ERK-BAP31 pathway could be used as a critical mediator for mitochondrial function and ER homeostasis in sepsis-related myocardial injury. Melatonin could stabilize BAP31 via the ERK pathway and thus contribute to the preservation of cardiac function in septic cardiomyopathy.
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Affiliation(s)
- Jiabing Zhang
- Graduate School of Medical School of Chinese PLA Hospital, Beijing, China
| | - Leili Wang
- Center of Project Management, Department of Aerospace Systems, Strategic Support Force, China
| | - Wei Xie
- Graduate School of Medical School of Chinese PLA Hospital, Beijing, China
| | - Shunying Hu
- Graduate School of Medical School of Chinese PLA Hospital, Beijing, China
| | - Hao Zhou
- Graduate School of Medical School of Chinese PLA Hospital, Beijing, China.,Center for Cardiovascular Research and Alternative Medicine, Wyoming University, Laramie, Wyoming
| | - Pingjun Zhu
- Graduate School of Medical School of Chinese PLA Hospital, Beijing, China
| | - Hang Zhu
- Graduate School of Medical School of Chinese PLA Hospital, Beijing, China
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23
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Gordaliza-Alaguero I, Cantó C, Zorzano A. Metabolic implications of organelle-mitochondria communication. EMBO Rep 2019; 20:e47928. [PMID: 31418169 DOI: 10.15252/embr.201947928] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 05/10/2019] [Accepted: 05/28/2019] [Indexed: 12/31/2022] Open
Abstract
Cellular organelles are not static but show dynamism-a property that is likely relevant for their function. In addition, they interact with other organelles in a highly dynamic manner. In this review, we analyze the proteins involved in the interaction between mitochondria and other cellular organelles, especially the endoplasmic reticulum, lipid droplets, and lysosomes. Recent results indicate that, on one hand, metabolic alterations perturb the interaction between mitochondria and other organelles, and, on the other hand, that deficiency in proteins involved in the tethering between mitochondria and the ER or in specific functions of the interaction leads to metabolic alterations in a variety of tissues. The interaction between organelles is an emerging field that will permit to identify key proteins, to delineate novel modulation pathways, and to elucidate their implications in human disease.
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Affiliation(s)
- Isabel Gordaliza-Alaguero
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Barcelona, Spain.,CIBER de Diabetes y Enfermedades Metabolicas Asociadas, Barcelona, Spain.,Departamento de Bioquimica i Biomedicina Molecular, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
| | - Carlos Cantó
- Nestle Institute of Health Sciences (NIHS), Lausanne, Switzerland.,School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Antonio Zorzano
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Barcelona, Spain.,CIBER de Diabetes y Enfermedades Metabolicas Asociadas, Barcelona, Spain.,Departamento de Bioquimica i Biomedicina Molecular, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
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24
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Chen J, Guo H, Jiang H, Namusamba M, Wang C, Lan T, Wang T, Wang B. A BAP31 intrabody induces gastric cancer cell death by inhibiting p27
kip1
proteasome degradation. Int J Cancer 2019; 144:2051-2062. [DOI: 10.1002/ijc.31930] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/15/2018] [Accepted: 10/09/2018] [Indexed: 01/26/2023]
Affiliation(s)
- Jing Chen
- College of Life and Health ScienceNortheastern University Shenyang Liaoning Province People's Republic of China
| | - Haotian Guo
- College of Life and Health ScienceNortheastern University Shenyang Liaoning Province People's Republic of China
| | - Haitao Jiang
- Dasan Medichem (Shenyang) R&D center Shenyang Liaoning Province People's Republic of China
| | - Mwichie Namusamba
- College of Life and Health ScienceNortheastern University Shenyang Liaoning Province People's Republic of China
| | - Changli Wang
- College of Life and Health ScienceNortheastern University Shenyang Liaoning Province People's Republic of China
| | - Tian Lan
- College of Life and Health ScienceNortheastern University Shenyang Liaoning Province People's Republic of China
| | - Tianyi Wang
- College of Life and Health ScienceNortheastern University Shenyang Liaoning Province People's Republic of China
| | - Bing Wang
- College of Life and Health ScienceNortheastern University Shenyang Liaoning Province People's Republic of China
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25
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Wang T, Chen J, Hou Y, Yu Y, Wang B. BAP31 deficiency contributes to the formation of amyloid‐β plaques in Alzheimer's disease by reducing the stability of RTN3. FASEB J 2018; 33:4936-4946. [DOI: 10.1096/fj.201801702r] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Tianyi Wang
- College of Life Science and HealthNortheastern University Shenyang China
| | - Jing Chen
- College of Life Science and HealthNortheastern University Shenyang China
| | - Yue Hou
- College of Life Science and HealthNortheastern University Shenyang China
| | - Yang Yu
- College of Life Science and HealthNortheastern University Shenyang China
| | - Bing Wang
- College of Life Science and HealthNortheastern University Shenyang China
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26
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Wu Z, Yang F, Jiang S, Sun X, Xu J. Induction of Liver Steatosis in BAP31-Deficient Mice Burdened with Tunicamycin-Induced Endoplasmic Reticulum Stress. Int J Mol Sci 2018; 19:ijms19082291. [PMID: 30081561 PMCID: PMC6121476 DOI: 10.3390/ijms19082291] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 07/24/2018] [Accepted: 08/02/2018] [Indexed: 12/12/2022] Open
Abstract
Endoplasmic reticulum (ER) stress is highly associated with liver steatosis. B-cell receptor-associated protein 31 (BAP31) has been reported to be involved in ER homeostasis, and plays key roles in hepatic lipid metabolism in high-fat diet-induced obese mice. However, whether BAP31 modulates hepatic lipid metabolism via regulating ER stress is still uncertain. In this study, wild-type and liver-specific BAP31-depleted mice were administrated with ER stress activator of Tunicamycin, the markers of ER stress, liver steatosis, and the underlying molecular mechanisms were determined. BAP31 deficiency increased Tunicamycin-induced hepatic lipid accumulation, aggravated liver dysfunction, and increased the mRNA levels of ER stress markers, including glucose-regulated protein 78 (GRP78), X-box binding protein 1 (XBP1), inositol-requiring protein-1α (IRE1α) and C/EBP homologous protein (CHOP), thus promoting ER stress in vivo and in vitro. Hepatic lipid export via very low-density lipoprotein (VLDL) secretion was impaired in BAP31-depleted mice, accompanied by reduced Apolipoprotein B (APOB) and microsomal triglyceride transfer protein (MTTP) expression. Exogenous lipid clearance was also inhibited, along with impaired gene expression related to fatty acid transportation and fatty acid β-oxidation. Finally, BAP31 deficiency increased Tunicamycin-induced hepatic inflammatory response. These results demonstrate that BAP31 deficiency increased Tunicamycin-induced ER stress, impaired VLDL secretion and exogenous lipid clearance, and reduced fatty acid β-oxidation, which eventually resulted in liver steatosis.
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Affiliation(s)
- Zhenhua Wu
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110169, China.
| | - Fan Yang
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110169, China.
| | - Shan Jiang
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110169, China.
| | - Xiaoyu Sun
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110169, China.
| | - Jialin Xu
- Institute of Biochemistry and Molecular Biology, College of Life and Health Sciences, Northeastern University, Shenyang 110169, China.
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27
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Chen C, Cui Q, Zhang X, Luo X, Liu Y, Zuo J, Peng Y. Long non-coding RNAs regulation in adipogenesis and lipid metabolism: Emerging insights in obesity. Cell Signal 2018; 51:47-58. [PMID: 30071290 DOI: 10.1016/j.cellsig.2018.07.012] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 07/27/2018] [Accepted: 07/29/2018] [Indexed: 12/15/2022]
Abstract
Obesity is a widespread health problem that brings about various adipose tissue dysfunctions. The balance of energy storage and energy expenditure is critical for normal fat accumulation and lipid metabolism. Therefore, understanding the molecular basis of adipogenesis and thermogenesis is essential to maintain adipose development and lipid homeostasis. Increasing evidence demonstrated that lncRNAs (long non-coding RNAs), a class of non-protein coding RNAs of >200 nucleotides in length, are identified as key regulators in obesity-related biological processes through diverse regulatory mechanisms. In this review, we concentrate on recent and relevant studies on the roles of lncRNAs in regulation of white adipogenesis, brown adipocyte differentiation and lipid metabolism. In addition, the diagnostic and therapeutic potential of lncRNAs is highlighted, and that will make recommendations for the future application of lncRNAs in the treatment of obesity.
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Affiliation(s)
- Chen Chen
- Hunan Institute of Animal & Veterinary Science, Changsha, 410131, PR China.
| | - Qingming Cui
- Hunan Institute of Animal & Veterinary Science, Changsha, 410131, PR China
| | - Xing Zhang
- Hunan Institute of Animal & Veterinary Science, Changsha, 410131, PR China
| | - Xuan Luo
- Hunan Institute of Animal & Veterinary Science, Changsha, 410131, PR China
| | - Yingying Liu
- Hunan Institute of Animal & Veterinary Science, Changsha, 410131, PR China
| | - Jianbo Zuo
- Hunan Institute of Animal & Veterinary Science, Changsha, 410131, PR China
| | - Yinglin Peng
- Hunan Institute of Animal & Veterinary Science, Changsha, 410131, PR China.
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