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Christie J, Anthony CM, Harish M, Mudartha D, Ud Din Farooqee SB, Venkatraman P. The interaction network of the proteasome assembly chaperone PSMD9 regulates proteostasis. FEBS J 2023; 290:5581-5604. [PMID: 37665644 DOI: 10.1111/febs.16948] [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: 03/20/2023] [Revised: 08/09/2023] [Accepted: 09/01/2023] [Indexed: 09/06/2023]
Abstract
Functional networks in cells are created by physical, genetic, and regulatory interactions. Mapping them and annotating their functions by available methods remains a challenge. We use affinity purification mass spectrometry (AP-MS) coupled with SLiMFinder to discern such a network involving 26S proteasome non-ATPase regulatory subunit 9 (PSMD9), a chaperone of proteasome assembly. Approximately 20% of proteins within the PSMD9 interactome carry a short linear motif (SLiM) of the type 'EXKK'. The binding of purified PSMD9 with the peptide sequence ERKK, proteins heterogeneous nuclear ribonucleoproteins A2/B1 (hnRNPA2B1; containing ERKK), and peroxiredoxin-6 (PRDX6; containing EAKK) provided proof of principle for this motif-driven network. The EXKK motif in the peptide primarily interacts with the coiled-coil N domain of PSMD9, a unique interaction not reported for any coiled-coil domain. PSMD9 knockout (KO) HEK293 cells experience endoplasmic reticulum (ER) stress and respond by increasing the unfolded protein response (UPR) and reducing the formation of aggresomes and lipid droplets. Trans-expression of PSMD9 in the KO cells rescues lipid droplet formation. Overexpression of PSMD9 in HEK293 cells results in reduced UPR, and increased lipid droplet and aggresome formation. The outcome argues for the prominent role of PSMD9 in maintaining proteostasis. Probable mechanisms involve the binding of PSMD9 to binding immunoglobulin protein (BIP/GRP78; containing EDKK), an endoplasmic reticulum chaperone and key regulator of the UPR, and fatty acid synthase (FASN; containing ELKK), involved in fatty acid synthesis/lipid biogenesis. We propose that PSMD9 acts as a buffer in the cellular milieu by moderating the UPR and enhancing aggresome formation to reduce stress-induced proteotoxicity. Akin to waves created in ponds that perpetuate to a distance, perturbing the levels of PSMD9 would cause ripples down the networks, affecting final reactions in the pathway, one of which is altered proteostasis.
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Affiliation(s)
- Joel Christie
- Protein Interactome Lab for Structural and Functional Biology, Advanced Centre for Treatment Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - C Merlyn Anthony
- Protein Interactome Lab for Structural and Functional Biology, Advanced Centre for Treatment Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - Mahalakshmi Harish
- Protein Interactome Lab for Structural and Functional Biology, Advanced Centre for Treatment Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - Deepti Mudartha
- Protein Interactome Lab for Structural and Functional Biology, Advanced Centre for Treatment Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, India
| | - Sheikh Burhan Ud Din Farooqee
- Protein Interactome Lab for Structural and Functional Biology, Advanced Centre for Treatment Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, India
| | - Prasanna Venkatraman
- Protein Interactome Lab for Structural and Functional Biology, Advanced Centre for Treatment Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
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2
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Shin J, Shimomura I. COVID-19, Obesity, and GRP78: Unraveling the Pathological Link. J Obes Metab Syndr 2023; 32:183-196. [PMID: 37752707 PMCID: PMC10583770 DOI: 10.7570/jomes23053] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/16/2023] [Accepted: 09/22/2023] [Indexed: 09/28/2023] Open
Abstract
The coronavirus disease 2019 (COVID-19) pandemic, driven by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has led to an unprecedented global surge in infections and fatalities. Notably, obesity has emerged as an important susceptibility factor for COVID-19; however, the pathological mechanisms for this remain poorly understood. Recent studies proposed a role for glucose-regulated protein 78 (GRP78), a protein implicated in both obesity and metabolic syndrome, which may function as a binding partner and/or co-receptor for SARS-CoV-2. Given its crucial involvement in diverse biological processes, GRP78 likely plays a major role in multiple facets of the viral life cycle and the pathology of COVID-19. This perspective review discusses the potential contributions of GRP78 to the dynamics of SARS-CoV-2 infection and pathology, particularly in the context of obesity. The primary objective is to facilitate a deeper understanding of the pathogenesis of COVID-19. Through this exploration, we aim to illuminate the complex interactions underpinning the nexus of COVID-19, obesity, and GRP78, ultimately paving the way for informed therapeutic strategies and preventive measures.
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Affiliation(s)
- Jihoon Shin
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
- Department of Diabetes Care Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Iichiro Shimomura
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
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3
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Akinyemi AO, Simpson KE, Oyelere SF, Nur M, Ngule CM, Owoyemi BCD, Ayarick VA, Oyelami FF, Obaleye O, Esoe DP, Liu X, Li Z. Unveiling the dark side of glucose-regulated protein 78 (GRP78) in cancers and other human pathology: a systematic review. Mol Med 2023; 29:112. [PMID: 37605113 PMCID: PMC10464436 DOI: 10.1186/s10020-023-00706-6] [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: 05/24/2023] [Accepted: 07/26/2023] [Indexed: 08/23/2023] Open
Abstract
Glucose-Regulated Protein 78 (GRP78) is a chaperone protein that is predominantly expressed in the lumen of the endoplasmic reticulum. GRP78 plays a crucial role in protein folding by assisting in the assembly of misfolded proteins. Under cellular stress conditions, GRP78 can translocate to the cell surface (csGRP78) were it interacts with different ligands to initiate various intracellular pathways. The expression of csGRP78 has been associated with tumor initiation and progression of multiple cancer types. This review provides a comprehensive analysis of the existing evidence on the roles of GRP78 in various types of cancer and other human pathology. Additionally, the review discusses the current understanding of the mechanisms underlying GRP78's involvement in tumorigenesis and cancer advancement. Furthermore, we highlight recent innovative approaches employed in downregulating GRP78 expression in cancers as a potential therapeutic target.
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Affiliation(s)
| | | | | | - Maria Nur
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, USA
| | | | | | | | - Felix Femi Oyelami
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, USA
| | | | - Dave-Preston Esoe
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, USA
| | - Xiaoqi Liu
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, USA
- Markey Cancer Center, College of Medicine, University of Kentucky, Lexington, USA
| | - Zhiguo Li
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, USA.
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4
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Liu Z, Liu G, Ha DP, Wang J, Xiong M, Lee AS. ER chaperone GRP78/BiP translocates to the nucleus under stress and acts as a transcriptional regulator. Proc Natl Acad Sci U S A 2023; 120:e2303448120. [PMID: 37487081 PMCID: PMC10400976 DOI: 10.1073/pnas.2303448120] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 06/08/2023] [Indexed: 07/26/2023] Open
Abstract
Cancer cells are commonly subjected to endoplasmic reticulum (ER) stress. To gain survival advantage, cancer cells exploit the adaptive aspects of the unfolded protein response such as upregulation of the ER luminal chaperone GRP78. The finding that when overexpressed, GRP78 can escape to other cellular compartments to gain new functions regulating homeostasis and tumorigenesis represents a paradigm shift. Here, toward deciphering the mechanisms whereby GRP78 knockdown suppresses EGFR transcription, we find that nuclear GRP78 is prominent in cancer and stressed cells and uncover a nuclear localization signal critical for its translocation and nuclear activity. Furthermore, nuclear GRP78 can regulate expression of genes and pathways, notably those important for cell migration and invasion, by interacting with and inhibiting the activity of the transcriptional repressor ID2. Our study reveals a mechanism for cancer cells to respond to ER stress via transcriptional regulation mediated by nuclear GRP78 to adopt an invasive phenotype.
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Affiliation(s)
- Ze Liu
- Department of Biochemistry and Molecular Medicine, University of Southern California, Keck School of Medicine, Los Angeles, CA90033
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA90033
| | - Guanlin Liu
- Department of Biochemistry and Molecular Medicine, University of Southern California, Keck School of Medicine, Los Angeles, CA90033
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA90033
| | - Dat P. Ha
- Department of Biochemistry and Molecular Medicine, University of Southern California, Keck School of Medicine, Los Angeles, CA90033
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA90033
| | - Justin Wang
- Department of Molecular Medicine, Scripps Research, La Jolla, CA92037
| | - Min Xiong
- Department of System Biology, Beckman Research Institute, City of Hope, Duarte, CA91010
| | - Amy S. Lee
- Department of Biochemistry and Molecular Medicine, University of Southern California, Keck School of Medicine, Los Angeles, CA90033
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA90033
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5
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Amaresan R, Gopal U. Cell surface GRP78: a potential mechanism of therapeutic resistant tumors. Cancer Cell Int 2023; 23:100. [PMID: 37221596 DOI: 10.1186/s12935-023-02931-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 04/19/2023] [Indexed: 05/25/2023] Open
Abstract
GRP78 is a protein that acts as a chaperone within the endoplasmic reticulum (ER) and has multiple functions. It is induced by stress and abets cells from survival. Despite, multiple Stress conditions like ER, chronic psychological and nutritional stress, hypoxia, chemotherapy, radiation therapy, and drug resistance induce cell surface GRP78 (CS-GRP78) expression in cancer cells. Further, CS-GRP78 is associated with increased malignancy and resistance to anti-cancer therapies and is considered a high-value druggable target. Recent preclinical research suggests that targeting CS-GRP78 with anti-GRP78 monoclonal antibodies (Mab) in combination with other agents may be effective in reversing the failure of chemotherapy, radiotherapy, or targeted therapies and increasing the efficacy of solid tumors treatment. This article will review recent evidence on the role of CS-GRP78 in developing resistance to anti-cancer treatments and the potential benefits of combining anti-GRP78 Mab with other cancer therapies for specific patient populations. Furthermore, our limited understanding of how CS-GRP78 regulated in human studies is a major drawback for designing effective CS-GRP78-targeted therapies. Hence, more research is still warranted to translate these potential therapies into clinical applications.
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Affiliation(s)
- Rajalakshmi Amaresan
- Department of Zoology, Auxilium College, Gandhi Nagar, Vellore, 632 006, Tamil Nadu, India
| | - Udhayakumar Gopal
- Department of Neurosurgery, University of Mississippi Medical Center, Jackson, MS, 39216, USA.
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Cai MN, Chen DM, Li SS, Liao CH, Li J, Huang ZX, Xiao LX, Wang JL, Gu YR, Gu L, Huang YH, Lian YF. COLEC10 Induces Endoplasmic Reticulum Stress by Occupying GRP78 and Inhibiting Hepatocellular Carcinoma. J Transl Med 2023; 103:100130. [PMID: 36925047 DOI: 10.1016/j.labinv.2023.100130] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 03/07/2023] [Accepted: 03/08/2023] [Indexed: 03/17/2023] Open
Abstract
Collectin subfamily member 10 (COLEC10), a C-type lectin mainly expressed in the liver, is involved in the development of hepatocellular carcinoma (HCC). However, its underlying molecular mechanism in HCC progression remains unknown. In this study, reduced COLEC10 expression in tumor tissues was validated by various HCC cohorts and was associated with poor patient prognosis. COLEC10 overexpression attenuated HCC cell growth and migration abilities in vitro and in vivo. We identified that COLEC10 was a novel interactor of GRP78, a master modulator of the unfolded protein response (UPR) in the endoplasmic reticulum (ER). COLEC10 overexpression potentiated ER stress in HCC cells, as demonstrated by elevated expression levels of p-PERK, p-IRE1α, ATF4, CHOP, and XBP-1s. The ER in COLEC10 overexpressing cells also showed a dilated and fragmented pattern. Mechanistically, COLEC10 overexpression increases GRP78 occupancy through direct binding by C-terminal CRD in the ER, which released and activated the ER stress transducers PERK and IRE1α, triggering the UPR activity. COLEC10 overexpressing HCC cells generated a relatively high ROS level and switched to apoptotic cell death under sorafenib-treated conditions. Our study provides the first novel view that COLEC10 inhibits HCC progression by regulating GRP78-mediated ER stress signaling and may serve as a promising therapeutic and prognostic biomarker.
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Affiliation(s)
- Mei-Na Cai
- Guangdong Provincial Key Laboratory of Liver Disease Research, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China; Department of Infectious Diseases, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Dong-Mei Chen
- Guangdong Provincial Key Laboratory of Liver Disease Research, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Shan-Shan Li
- Department of Medical Oncology, the Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510655, China
| | - Chun-Hong Liao
- Guangdong Provincial Key Laboratory of Liver Disease Research, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Jing Li
- Guangdong Provincial Key Laboratory of Liver Disease Research, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Ze-Xuan Huang
- Guangdong Provincial Key Laboratory of Liver Disease Research, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Le-Xin Xiao
- Guangdong Provincial Key Laboratory of Liver Disease Research, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Jia-Liang Wang
- Guangdong Provincial Key Laboratory of Liver Disease Research, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Yu-Rong Gu
- Department of Infectious Diseases, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Lin Gu
- Guangdong Provincial Key Laboratory of Liver Disease Research, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Yue-Hua Huang
- Guangdong Provincial Key Laboratory of Liver Disease Research, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China; Department of Infectious Diseases, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
| | - Yi-Fan Lian
- Guangdong Provincial Key Laboratory of Liver Disease Research, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
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7
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Yao B, Wang L, Xie C, Li M, Peng C, Li Z, Lu W, Chen J. Biological evaluation of a novel stable peptide PET molecular probe [ 18F]AlF-NOTA- DVAP targeting to tumor cell surface GRP78. Nucl Med Biol 2023; 118-119:108330. [PMID: 36889247 DOI: 10.1016/j.nucmedbio.2023.108330] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 03/04/2023]
Abstract
BACKGROUNDS Glucose-Regulated Protein 78 (GRP78) is an attractive anticancer target for its selective anchoring on the surface of tumor cells and cancer endothelial cells rather than normal cells. Cell-surface GRP78 overexpression of tumor indicates that GRP78 is a crucial target for relative tumor imaging and clinical treatment. Herein, we report the design and preclinical evaluation of a new D peptide ligand [18F]AlF-NOTA-DVAP recognizing GRP78 expressed on the cell surface of breast cancer. METHODS Radiochemical synthesis of [18F]AlF-NOTA-DVAP was achieved via a one-pot labeling process by heating NOTA-DVAP in the presence of in situ prepared [18F]AlF for 15 min at 110 °C and purified through HPLC. RESULTS The radiotracer showed high in vitro stability in rat serum at 37 °C over 3 h. Both biodistribution studies and in vivo micro-PET/CT imaging studies in BALB/c mice bearing 4 T1 tumor showed [18F]AlF-NOTA-DVAP had a rapid and high uptake in tumor, as well as a long residence time. The high hydrophilicity of the radiotracer enables its fast clearance from most normal tissues and thus improves the tumor-to-normal tissue ratios (4.40 at 60 min) which is better than [18F]FDG (1.31 at 60 min). Pharmacokinetic studies showed the average in vivo mean residence time of the radiotracer was just 0.6432 h and indicated that this hydrophilic radiotracer was quickly eliminated from the body to reduce the distribution of non-target tissues. CONCLUSIONS These results suggest that [18F]AlF-NOTA-DVAP is a very promising PET probe for tumor-specific imaging of cell-surface GRP78-positive tumor.
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Affiliation(s)
- Bolin Yao
- Radiopharmacy and Molecular Imaging Center, School of Pharmacy, Fudan University, Shanghai 201203, China; Key Laboratory of Smart Drug Delivery (Fudan University), Ministry of Education, Shanghai 201203, China.
| | - Luting Wang
- Radiopharmacy and Molecular Imaging Center, School of Pharmacy, Fudan University, Shanghai 201203, China; Key Laboratory of Smart Drug Delivery (Fudan University), Ministry of Education, Shanghai 201203, China; Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| | - Cao Xie
- Radiopharmacy and Molecular Imaging Center, School of Pharmacy, Fudan University, Shanghai 201203, China; Key Laboratory of Smart Drug Delivery (Fudan University), Ministry of Education, Shanghai 201203, China
| | - Ming Li
- PET Center, Huashan Hospital, Fudan University, Shanghai 200235, China
| | - Chengyuan Peng
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Zhuoyun Li
- Radiopharmacy and Molecular Imaging Center, School of Pharmacy, Fudan University, Shanghai 201203, China; Key Laboratory of Smart Drug Delivery (Fudan University), Ministry of Education, Shanghai 201203, China.
| | - Weiyue Lu
- Radiopharmacy and Molecular Imaging Center, School of Pharmacy, Fudan University, Shanghai 201203, China; Key Laboratory of Smart Drug Delivery (Fudan University), Ministry of Education, Shanghai 201203, China.
| | - Jian Chen
- Radiopharmacy and Molecular Imaging Center, School of Pharmacy, Fudan University, Shanghai 201203, China; Key Laboratory of Smart Drug Delivery (Fudan University), Ministry of Education, Shanghai 201203, China.
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8
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Schneider M, Antes I. Comparison of allosteric signaling in DnaK and BiP using mutual information between simulated residue conformations. Proteins 2023; 91:237-255. [PMID: 36111439 DOI: 10.1002/prot.26425] [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: 03/30/2022] [Revised: 08/06/2022] [Accepted: 09/13/2022] [Indexed: 01/13/2023]
Abstract
The heat shock protein 70 kDa (Hsp70) chaperone system serves as a critical component of protein quality control across a wide range of prokaryotic and eukaryotic organisms. Divergent evolution and specialization to particular organelles have produced numerous Hsp70 variants which share similarities in structure and general function, but differ substantially in regulatory aspects, including conformational dynamics and activity modulation by cochaperones. The human Hsp70 variant BiP (also known as GRP78 or HSPA5) is of therapeutic interest in the context of cancer, neurodegenerative diseases, and viral infection, including for treatment of the pandemic virus SARS-CoV-2. Due to the complex conformational rearrangements and high sequential variance within the Hsp70 protein family, it is in many cases poorly understood which amino acid mutations are responsible for biochemical differences between protein variants. In this study, we predicted residues associated with conformational regulation of human BiP and Escherichia coli DnaK. Based on protein structure networks obtained from molecular dynamics simulations, we analyzed the shared information between interaction timelines to highlight residue positions with strong conformational coupling to their environment. Our predictions, which focus on the binding processes of the chaperone's substrate and cochaperones, indicate residues filling potential signaling roles specific to either DnaK or BiP. By combining predictions of individual residues into conformationally coupled chains connecting ligand binding sites, we predict a BiP specific secondary signaling pathway associated with substrate binding. Our study sheds light on mechanistic differences in signaling and regulation between Hsp70 variants, which provide insights relevant to therapeutic applications of these proteins.
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Affiliation(s)
- Markus Schneider
- TUM Center for Functional Protein Assemblies and TUM School of Life Sciences, Technische Universität München, Freising, Bavaria, Germany
| | - Iris Antes
- TUM Center for Functional Protein Assemblies and TUM School of Life Sciences, Technische Universität München, Freising, Bavaria, Germany
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9
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Qin C, Wang Y, Zhang Y, Zhu Y, Wang Y, Cao F. Transcriptome-wide analysis reveals the molecular mechanisms of cannabinoid type II receptor agonists in cardiac injury induced by chronic psychological stress. Front Genet 2023; 13:1095428. [PMID: 36704356 PMCID: PMC9871316 DOI: 10.3389/fgene.2022.1095428] [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: 11/11/2022] [Accepted: 12/27/2022] [Indexed: 01/12/2023] Open
Abstract
Background: Growing evidence has supported that chronic psychological stress would cause heart damage, However the mechanisms involved are not clear and effective interventions are insufficient. Cannabinoid type 2 receptor (CB2R) can be a potential treatment for cardiac injury. This study is aimed to investigate the protective mechanism of CB2R agonist against chronic psychological stress-induced cardiac injury. Methods: A mouse chronic psychological stress model was constructed based on a chronic unpredictable stress pattern. Mice were performed a three-week psychological stress procedure, and cardiac tissues of them were collected for whole-transcriptome sequencing. Overlap analysis was performed on differentially expressed mRNAs (DE-mRNAs) and ER stress-related genes (ERSRGs), and bioinformatic methods were used to predict the ceRNA networks and conduct pathway analysis. The expressions of the DE-ERSRGs were validated by RT-qPCR. Results: In the comparison of DE mRNA in Case group, Control group and Treatment group, three groups of ceRNA networks and ceRNA (circ) networks were constructed. The DE-mRNAs were mainly enriched in chromatid-relevant terms and Hematopoietic cell lineage pathway. Additionally, 13 DE-ERSRGs were obtained by the overlap analysis, which were utilized to establish a ceRNA network with 15 nodes and 14 edges and a ceRNA (circ) network with 23 nodes and 28 edges. Furthermore, four DE-ERSRGs (Cdkn1a, Atf3, Fkbp5, Gabarapl1) in the networks were key, which were mainly enriched in response to extracellular stimulus, response to nutrient levels, cellular response to external stimulus, and FoxO signaling pathway. Finally, the RT-qPCR results showed almost consistent expression patterns of 13 DE-ERSRGs between the transcriptome and tissue samples. Conclusion: The findings of this study provide novel insights into the molecular mechanisms of chronic psychological stress-induced cardiac diseases and reveal novel targets for the cardioprotective effects of CB2R agonists.
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Affiliation(s)
- Cheng Qin
- Department of Cardiology, National Clinical Research Center for Geriatric Diseases and Second Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yujia Wang
- Department of Cardiology, National Clinical Research Center for Geriatric Diseases and Second Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yang Zhang
- Department of Cardiology, National Clinical Research Center for Geriatric Diseases and Second Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yan Zhu
- Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Yabin Wang
- Department of Cardiology, National Clinical Research Center for Geriatric Diseases and Second Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Feng Cao
- Department of Cardiology, National Clinical Research Center for Geriatric Diseases and Second Medical Center of Chinese PLA General Hospital, Beijing, China,Beijing Key Laboratory of Research on Aging and Related Diseases, Beijing, China,*Correspondence: Feng Cao,
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10
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Ning J, Cui X, Li N, Li N, Zhao B, Miao J, Lin Z. Activation of GRP78 ATPase suppresses A549 lung cancer cell migration by promoting ITGB4 degradation. Cell Adh Migr 2022; 16:107-114. [PMID: 36203272 PMCID: PMC9542429 DOI: 10.1080/19336918.2022.2130415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Hypochlorous acid (HOCl) is an essential signal molecule in cancer cells. Activated GRP78 ATPase by a HOCl probe named ZBM-H inhibits lung cancer cell growth. However, the role and underlying mechanism of GRP78 ATPase in lung cancer cell migration have not been established. Here, we reported that activation of GRP78 ATPase by ZBM-H suppressed A549 cell migration and inhibited EMT process. Notably, ZBM-H time-dependently decreased the protein level of integrin β4 (ITGB4) in A549 cells. Combinatorial treatment of 3BDO (an autophagy inhibitor) and ZBM-H partially rescued the protein level of ITGB4. Consistently, 3BDO partially reversed ZBM-H-inhibited cell migration. Furthermore, ZBM-H promoted the interaction between ANXA7 and Hsc70, which participated in the regulation of selective autophagy and degradation of ITGB4.
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Affiliation(s)
- Junya Ning
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Qingdao, P.R. China,Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Key Laboratory of Cellular Physiology of Shanxi Province, and the Department of Physiology, Shanxi Medical University, Taiyuan, P.R. China
| | - Xiaoling Cui
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Qingdao, P.R. China
| | - Nan Li
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Qingdao, P.R. China
| | - Na Li
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Qingdao, P.R. China
| | - Baoxiang Zhao
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, P.R. China
| | - Junying Miao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Qingdao, P.R. China,CONTACT Junying Miao Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Qingdao, 266237, P.R. China
| | - Zhaomin Lin
- Central Research Laboratory, the Second Hospital, Shandong University, Jinan, P.R. China,Zhaomin Lin Central Research Laboratory, the Second Hospital, Shandong University, Jinan, P.R. China
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11
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Rico-Llanos G, Porras-Perales Ó, Escalante S, Vázquez-Calero DB, Valiente L, Castillo MI, Pérez-Tejeiro JM, Baglietto-Vargas D, Becerra J, Reguera JM, Duran I, Csukasi F. Cellular stress modulates severity of the inflammatory response in lungs via cell surface BiP. Front Immunol 2022; 13:1054962. [DOI: 10.3389/fimmu.2022.1054962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 10/27/2022] [Indexed: 11/21/2022] Open
Abstract
Inflammation is a central pathogenic feature of the acute respiratory distress syndrome (ARDS) in COVID-19. Previous pathologies such as diabetes, autoimmune or cardiovascular diseases become risk factors for the severe hyperinflammatory syndrome. A common feature among these risk factors is the subclinical presence of cellular stress, a finding that has gained attention after the discovery that BiP (GRP78), a master regulator of stress, participates in the SARS-CoV-2 recognition. Here, we show that BiP serum levels are higher in COVID-19 patients who present certain risk factors. Moreover, early during the infection, BiP levels predict severe pneumonia, supporting the use of BiP as a prognosis biomarker. Using a mouse model of pulmonary inflammation, we observed increased levels of cell surface BiP (cs-BiP) in leukocytes during inflammation. This corresponds with a higher number of neutrophiles, which show naturally high levels of cs-BiP, whereas alveolar macrophages show a higher than usual exposure of BiP in their cell surface. The modulation of cellular stress with the use of a clinically approved drug, 4-PBA, resulted in the amelioration of the lung hyperinflammatory response, supporting the anti-stress therapy as a valid therapeutic strategy for patients developing ARDS. Finally, we identified stress-modulated proteins that shed light into the mechanism underlying the cellular stress-inflammation network in lungs.
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12
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Shin J, Toyoda S, Fukuhara A, Shimomura I. GRP78, a Novel Host Factor for SARS-CoV-2: The Emerging Roles in COVID-19 Related to Metabolic Risk Factors. Biomedicines 2022; 10:biomedicines10081995. [PMID: 36009544 PMCID: PMC9406123 DOI: 10.3390/biomedicines10081995] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/08/2022] [Accepted: 08/12/2022] [Indexed: 11/28/2022] Open
Abstract
The outbreak of coronavirus disease 19 (COVID-19), caused by the infection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has resulted in an unprecedented amount of infection cases and deaths, leading to the global health crisis. Despite many research efforts, our understanding of COVID-19 remains elusive. Recent studies have suggested that cell surface glucose-regulated protein 78 (GRP78) acts as a host co-receptor for SARS-CoV-2 infection and is related to COVID-19 risks, such as older age, obesity, and diabetes. Given its significance in a wide range of biological processes, such as protein homeostasis and cellular signaling, GRP78 might also play an important role in various stages of the viral life cycle and pathology of SARS-CoV-2. In this perspective, we explore the emerging and potential roles of GRP78 in SARS-CoV-2 infection. Additionally, we discuss the association with COVID-19 risks and symptoms. We hope this review article will be helpful to understand COVID-19 pathology and promote attention and study of GRP78 from many clinical and basic research fields.
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Affiliation(s)
- Jihoon Shin
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
- Department of Diabetes Care Medicine, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
- Correspondence:
| | - Shinichiro Toyoda
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Atsunori Fukuhara
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
- Department of Adipose Management, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Iichiro Shimomura
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
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13
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Hu M, Zhang X, Hu C, Teng T, Tang QZ. A brief overview about the adipokine: Isthmin-1. Front Cardiovasc Med 2022; 9:939757. [PMID: 35958402 PMCID: PMC9360543 DOI: 10.3389/fcvm.2022.939757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 06/30/2022] [Indexed: 11/24/2022] Open
Abstract
Isthmin-1 is a secreted protein with multiple capability; however, it truly attracts our attention since the definition as an adipokine in 2021, which exerts indispensable roles in various pathophysiological processes through the endocrine or autocrine manners. In this review, we summarize recent knowledge of isthmin-1, including its distribution, structure, receptor and potential function.
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Affiliation(s)
- Min Hu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Xin Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Can Hu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Teng Teng
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Qi-Zhu Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
- *Correspondence: Qi-Zhu Tang
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14
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Jiang M, Li Z, Zhu G. The role of endoplasmic reticulum stress in the pathophysiology of periodontal disease. J Periodontal Res 2022; 57:915-932. [PMID: 35818935 DOI: 10.1111/jre.13031] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 05/22/2022] [Accepted: 06/23/2022] [Indexed: 12/14/2022]
Abstract
The endoplasmic reticulum (ER) is a principal organelle for folding, post-translational modifications and transport of secretory, luminal, and membrane proteins. ER stress is a condition induced by the accumulation of unfolded or misfolded proteins owing to a variety of physiological and pathological phenomena. To overcome the deleterious effects of ER stress, unfolded protein response (UPR) is initiated to translocate and remove the misfolded and accumulated proteins. Plenty of evidence shows the correlation between ER stress/UPR and the pathology of inflammatory disease. Periodontal disease is a chronic inflammatory disease characterized by the irreversible destruction of periodontal tissues, which associates with the onset and progress of several systemic diseases. Periodontopathic bacterium and pro-inflammatory mediators play a pivotal role in the progress of periodontal disease. Besides, cigarette smoke has long been associated with periodontal disease. As an inflammatory disorder of the periodontium, periodontal disease is highly related to ER stress. In this review, we provide an overview of the pathophysiological effect of ER stress on periodontal disease through five aspects as follow: ER stress and periodontal tissue remodeling, including both soft tissue and hard tissue; ER stress and the inflammation; ER stress and systematic effect during the periodontal disease; last but not least, ER stress and the autophagic apoptosis in cells.
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Affiliation(s)
- Ming Jiang
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhuoneng Li
- Centers for Disease Control and Prevention of Wuhan, Wuhan, Hubei, China
| | - Guangxun Zhu
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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15
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Wen Y, Jing N, Huo F, Yin C. Rational design of a turn-on fluorescent probe for visualization of GRP78 protein in tumor models. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.06.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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16
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Maliekal TT, Dharmapal D, Sengupta S. Tubulin Isotypes: Emerging Roles in Defining Cancer Stem Cell Niche. Front Immunol 2022; 13:876278. [PMID: 35693789 PMCID: PMC9179084 DOI: 10.3389/fimmu.2022.876278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/05/2022] [Indexed: 11/13/2022] Open
Abstract
Although the role of microtubule dynamics in cancer progression is well-established, the roles of tubulin isotypes, their cargos and their specific function in the induction and sustenance of cancer stem cells (CSCs) were poorly explored. But emerging reports urge to focus on the transport function of tubulin isotypes in defining orchestrated expression of functionally critical molecules in establishing a stem cell niche, which is the key for CSC regulation. In this review, we summarize the role of specific tubulin isotypes in the transport of functional molecules that regulate metabolic reprogramming, which leads to the induction of CSCs and immune evasion. Recently, the surface expression of GLUT1 and GRP78 as well as voltage-dependent anion channel (VDAC) permeability, regulated by specific isotypes of β-tubulins have been shown to impart CSC properties to cancer cells, by implementing a metabolic reprogramming. Moreover, βIVb tubulin is shown to be critical in modulating EphrinB1signaling to sustain CSCs in oral carcinoma. These tubulin-interacting molecules, Ephrins, GLUT1 and GRP78, are also important regulators of immune evasion, by evoking PD-L1 mediated T-cell suppression. Thus, the recent advances in the field implicate that tubulins play a role in the controlled transport of molecules involved in CSC niche. The indication of tubulin isotypes in the regulation of CSCs offers a strategy to specifically target those tubulin isotypes to eliminate CSCs, rather than the general inhibition of microtubules, which usually leads to therapy resistance.
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Affiliation(s)
- Tessy Thomas Maliekal
- Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
- Regional Centre for Biotechnology, Faridabad, India
- *Correspondence: Tessy Thomas Maliekal, ; Suparna Sengupta,
| | - Dhrishya Dharmapal
- Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
- University of Kerala, Department of Biotechnology, Thiruvananthapuram, India
| | - Suparna Sengupta
- Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
- Regional Centre for Biotechnology, Faridabad, India
- University of Kerala, Department of Biotechnology, Thiruvananthapuram, India
- *Correspondence: Tessy Thomas Maliekal, ; Suparna Sengupta,
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17
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Hernandez I, Cohen M. Linking cell-surface GRP78 to cancer: From basic research to clinical value of GRP78 antibodies. Cancer Lett 2022; 524:1-14. [PMID: 34637844 DOI: 10.1016/j.canlet.2021.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/10/2021] [Accepted: 10/05/2021] [Indexed: 01/01/2023]
Abstract
Glucose-related protein 78 (GRP78) is a chaperone protein localized primarily in the endoplasmic reticulum (ER) lumen, where it helps in proper protein folding by targeting misfolded proteins and facilitating protein assembly. In stressed cells, GRP78 is translocated to the cell surface (csGRP78) where it binds to various ligands and triggers different intracellular pathways. Thus, csGRP78 expression is associated with cancer, involved in the maintenance and progression of the disease. Extracellular exposition of csGRP78 leads to the production of autoantibodies as observed in patients with prostate or ovarian cancer, in which the ability to target csGRP78 affects the tumor development. Present on the surface of cancer cells and not normal cells in vivo, csGRP78 represents an interesting target for therapeutic antibody strategies. Here we give an overview of the csGRP78 function in the cell and its role in oncogenesis, thereby providing insight into the clinical value of GRP78 monoclonal antibodies for cancer prognosis and treatment.
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Affiliation(s)
- Isabelle Hernandez
- Department of Pediatrics, Gynecology and Obstetrics, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Translational Research Centre in Oncohaematology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Marie Cohen
- Department of Pediatrics, Gynecology and Obstetrics, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Translational Research Centre in Oncohaematology, Faculty of Medicine, University of Geneva, Geneva, Switzerland.
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18
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Shin J, Toyoda S, Nishitani S, Fukuhara A, Kita S, Otsuki M, Shimomura I. Possible Involvement of Adipose Tissue in Patients With Older Age, Obesity, and Diabetes With SARS-CoV-2 Infection (COVID-19) via GRP78 (BIP/HSPA5): Significance of Hyperinsulinemia Management in COVID-19. Diabetes 2021; 70:2745-2755. [PMID: 34615619 PMCID: PMC8660985 DOI: 10.2337/db20-1094] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 09/29/2021] [Indexed: 12/20/2022]
Abstract
Aging, obesity, and diabetes are major risk factors for the severe progression and outcome of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection (coronavirus disease 2019 [COVID-19]), but the underlying mechanism is not yet fully understood. In this study, we found that the SARS-CoV-2 spike protein physically interacts with cell surface GRP78, which promotes the binding to and accumulation in ACE2-expressing cells. GRP78 was highly expressed in adipose tissue and increased in humans and mice with older age, obesity, and diabetes. The overexpression of GRP78 was attributed to hyperinsulinemia in adipocytes, which was in part mediated by the stress-responsive transcription factor XBP-1s. Management of hyperinsulinemia by pharmacological approaches, including metformin, sodium-glucose cotransporter 2 inhibitor, or β3-adrenergic receptor agonist, decreased GRP78 gene expression in adipose tissue. Environmental interventions, including exercise, calorie restriction, fasting, or cold exposure, reduced the gene expression of GRP78 in adipose tissue. This study provides scientific evidence for the role of GRP78 as a binding partner of the SARS-CoV-2 spike protein and ACE2, which might be related to the severe progression and outcome of COVID-19 in patients with older age, obesity, and diabetes. The management of hyperinsulinemia and the related GRP78 expression could be a therapeutic or preventative target.
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Affiliation(s)
- Jihoon Shin
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
- Department of Diabetes Care Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Shinichiro Toyoda
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Shigeki Nishitani
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Atsunori Fukuhara
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
- Department of Adipose Management, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Shunbun Kita
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
- Department of Adipose Management, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Michio Otsuki
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Iichiro Shimomura
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
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19
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Rai R, Kennedy AL, Isingizwe ZR, Javadian P, Benbrook DM. Similarities and Differences of Hsp70, hsc70, Grp78 and Mortalin as Cancer Biomarkers and Drug Targets. Cells 2021; 10:cells10112996. [PMID: 34831218 PMCID: PMC8616428 DOI: 10.3390/cells10112996] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/29/2021] [Accepted: 11/01/2021] [Indexed: 12/17/2022] Open
Abstract
Background: Upregulation of Heath Shock Protein 70 (HSP70) chaperones supports cancer cell survival. Their high homology causes a challenge to differentiate them in experimental or prevention and treatment strategies. The objective of this investigation was to determine similarities and differences of Hsp70, hsc70, Grp78 and Mortalin members of the HSP70 family encoded by HSPA1, HSPA8, HSPA5 and HSPA9 genes, respectively. Methods: Literature reviews were conducted using HSPA1, HSPA5, HSPA8 and HSPA9 gene or protein names or synonyms combined with biological or cancer-relevant terms. Ingenuity Pathway Analysis was used to identify and compare profiles of proteins that directly bind individual chaperones and their associated pathways. TCGA data was probed to identify associations of hsc70 with cancer patient survival. ClinicalTrials.gov was used to identify HSP70 family studies. Results: The chaperones have similar protein folding functions. Their different cellular effects are determined by co-chaperones and client proteins combined with their intra- and extra-cellular localizations. Their upregulation is associated with worse patient prognosis in multiple cancers and can stimulate tumor immune responses or drug resistance. Their inhibition selectively kills cancer over healthy cells. Conclusions: Differences in Hsp70, hsc70, Grp78 and mortalin provide opportunities to calibrate HSP70 inhibitors for individual cancers and combination therapies.
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Affiliation(s)
- Rajani Rai
- Gynecologic Oncology Section, Obstetrics and Gynecology Department, Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.R.); (P.J.)
| | - Amy L. Kennedy
- Pathology Department, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA;
| | - Zitha Redempta Isingizwe
- Pharmaceutical Sciences Department, Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA;
| | - Pouya Javadian
- Gynecologic Oncology Section, Obstetrics and Gynecology Department, Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.R.); (P.J.)
| | - Doris Mangiaracina Benbrook
- Gynecologic Oncology Section, Obstetrics and Gynecology Department, Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.R.); (P.J.)
- Pathology Department, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA;
- Pharmaceutical Sciences Department, Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA;
- Correspondence: ; Tel.: +1-405-271-5523
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20
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Trouvé P, Férec C, Génin E. The Interplay between the Unfolded Protein Response, Inflammation and Infection in Cystic Fibrosis. Cells 2021; 10:2980. [PMID: 34831204 PMCID: PMC8616505 DOI: 10.3390/cells10112980] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 10/25/2021] [Accepted: 10/29/2021] [Indexed: 12/15/2022] Open
Abstract
In cystic fibrosis (CF), p.Phe508del is the most frequent mutation in the Cystic Fibrosis Transmembrane conductance Regulator (CFTR) gene. The p.Phe508del-CFTR protein is retained in the ER and rapidly degraded. This retention likely triggers an atypical Unfolded Protein Response (UPR) involving ATF6, which reduces the expression of p.Phe508del-CFTR. There are still some debates on the role of the UPR in CF: could it be triggered by the accumulation of misfolded CFTR proteins in the endoplasmic reticulum as was proposed for the most common CFTR mutation p.Phe508del? Or, is it the consequence of inflammation and infection that occur in the disease? In this review, we summarize recent findings on UPR in CF and show how infection, inflammation and UPR act together in CF. We propose to rethink their respective role in CF and to consider them as a whole.
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Affiliation(s)
- Pascal Trouvé
- Inserm, Univ Brest, EFS, UMR 1078, GGB, F-29200 Brest, France; (C.F.); (E.G.)
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21
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Shabani S, Moghadam MF, Gargari SLM. Isolation and characterization of a novel GRP78-specific single-chain variable fragment (scFv) using ribosome display method. Med Oncol 2021; 38:115. [PMID: 34390413 DOI: 10.1007/s12032-021-01561-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 07/18/2021] [Indexed: 01/07/2023]
Abstract
Glucose-regulated protein 78 (GRP78) is a well-characterized endoplasmic reticulum (ER) chaperon frequently overexpressed at the surface of tumor cells and associated with tumor survival, metastasis, and chemoresistance. Hence, potential GRP78 binders emerge as promising candidates for cancer therapy and diagnosis. We applied ribosome display to isolate a single-chain variable domain (scFv) specific for the C-terminal domain of a recombinant human GRP78 (CGRP). Six female BALB/c mice were immunized and then splenocyte mRNA was extracted. An scFv-ribosome display library was established by joining the amplified VH/Vκ fragments through a 72-bp linker using overlap extension PCR. Then, selection was performed by applying two rounds of eukaryotic ribosome display panning with stepwise decreased amount of CGRP. Ultimately, the selected scFv was characterized using the indirect-ELISA assay, competitive-ELISA assay, Western blotting, Surface Plasmon Resonance (SPR), and in-silico analyses. The constructed library had a length of ~ 1100 bp and the high-affinity scFvs were isolated using the outputs of the final panning round. Among 60 positive clones, GSF3 was selected and its expression, purification, and binding capacity was confirmed by SDS-PAGE and Western blotting. GSF3 exhibited an affinity of 13 × 107 M-1 to CGRP as assessed by SPR. Moreover, the in-silico analyses indicated that GSF3 binds the C-terminal domain of GRP78 through key residues engaged in antibody-antigen interactions. We found that ribosome display is a swift and reliable technique for specific and high-affinity scFv isolation. Moreover, our results suggest that GSF3 might be applied as a potential cancer immunotherapeutic and diagnostic tool if this approach is carefully followed by successful preclinical and clinical evaluations to validate the findings for further confirmation.
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Affiliation(s)
- Shima Shabani
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, P.O. Box 14115/111, Tehran, Iran
| | - Mehdi Forouzandeh Moghadam
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, P.O. Box 14115/111, Tehran, Iran.
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22
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Mechanisms linking endoplasmic reticulum (ER) stress and microRNAs to adipose tissue dysfunction in obesity. Crit Rev Biochem Mol Biol 2021; 56:455-481. [PMID: 34182855 DOI: 10.1080/10409238.2021.1925219] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Over accumulation of lipids in adipose tissue disrupts metabolic homeostasis by affecting cellular processes. Endoplasmic reticulum (ER) stress is one such process affected by obesity. Biochemical and physiological alterations in adipose tissue due to obesity interfere with adipose ER functions causing ER stress. This is in line with increased irregularities in other cellular processes such as inflammation and autophagy, affecting overall metabolic integrity within adipocytes. Additionally, microRNAs (miRNAs), which can post-transcriptionally regulate genes, are differentially modulated in obesity. A better understanding and identification of such miRNAs could be used as novel therapeutic targets to fight against diseases. In this review, we discuss ways in which ER stress participates as a common molecular process in the pathogenesis of obesity-associated metabolic disorders. Moreover, our review discusses detailed underlying mechanisms through which ER stress and miRNAs contribute to metabolic alteration in adipose tissue in obesity. Hence, identifying mechanistic involvement of miRNAs-ER stress cross-talk in regulating adipose function during obesity could be used as a potential therapeutic approach to combat chronic diseases, including obesity.
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