1
|
Hasan Maleki M, Siri M, Jafarabadi A, Rajabi M, Amirhossein Mazhari S, Noori Z, Koohpeyma F, Dehghanian A, Esmaeili N, Aryanian Z, Dastghaib S. Boosting wound healing in diabetic rats: The role of nicotinamide riboside and resveratrol in UPR modulation and pyroptosis inhibition. Int Immunopharmacol 2024; 132:112013. [PMID: 38583241 DOI: 10.1016/j.intimp.2024.112013] [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: 03/17/2024] [Revised: 04/02/2024] [Accepted: 04/02/2024] [Indexed: 04/09/2024]
Abstract
BACKGROUND Diabetes-related skin ulcers provide a substantial therapeutic issue, sometimes leading to amputation, needing immediate practical treatments for efficient wound care. While the exact mechanisms are unknown, pyroptosis and deregulation of the unfolded protein response (UPR) are known to exacerbate inflammation. Nicotinamide Riboside (NR) and Resveratrol (RV), which are known for their Nicotinamide adenine dinucleotide (NAD+) boosting and anti-inflammatory properties, are being studied as potential treatments. The purpose of this study was to shed light on the underlying molecular mechanisms and explore the medical application of NR and RV in diabetic wound healing. METHODS 54 male Sprague-Dawley rats divided into control, diabetic (DM), Gel Base, DM-NR, DM-RV, and DM-NR + RV. Rats were orally administered 50 mg/kg/day of RV and 300 mg/kg/day of NR for 5 weeks. Following diabetes induction, their wounds were topically treated with 5 % NR and RV gel for 15 days. The wound closure rate, body weight, and serum lipid profiles were examined. Gene expression study evaluated UPR and pyroptosis-related genes (BIP, PERK, ATF6, IRE1α, sXBP1, CHOP, NLRP3, caspase-1, NFκB, and IL1-β) in wound tissues, alongside histological assessment of cellular changes. RESULTS NR and RV treatments greatly enhanced wound healing. Molecular investigation demonstrated UPR and pyroptosis marker modifications, suggesting UPR balance and anti-inflammatory effects. Histological investigation demonstrated decreased inflammation and increased re-epithelialization. The combination of NR and RV therapy had better results than either treatment alone. CONCLUSION This study shows that NR and RV have therapeutic promise in treating diabetic wounds by addressing UPR dysregulation, and pyroptosis. The combination therapy is a viable strategy to improving the healing process, providing a multimodal intervention for diabetic skin ulcers. These findings pave the way for additional investigation and possible therapeutic applications, giving hope for better outcomes in diabetic wound care.
Collapse
Affiliation(s)
- Mohammad Hasan Maleki
- Autoimmune Bullous Diseases Research Center, Tehran University of Medical Sciences, Tehran, Iran; Endocrinology and Metabolism Research Center, Shiraz University of Medical Science, Shiraz, Iran
| | - Morvarid Siri
- Autoimmune Bullous Diseases Research Center, Tehran University of Medical Sciences, Tehran, Iran; Endocrinology and Metabolism Research Center, Shiraz University of Medical Science, Shiraz, Iran
| | - Amirhossein Jafarabadi
- Endocrinology and Metabolism Research Center, Shiraz University of Medical Science, Shiraz, Iran
| | - Mahsa Rajabi
- Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Zahra Noori
- Department of Anatomical Sciences, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farhad Koohpeyma
- Endocrinology and Metabolism Research Center, Shiraz University of Medical Science, Shiraz, Iran
| | - Amirreza Dehghanian
- Trauma Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; Molecular Pathology and Cytogenetics Division, Department of Pathology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Nafiseh Esmaeili
- Autoimmune Bullous Diseases Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Dermatology, Razi Hospital, School of Medicine, Tehran University of Medical Sciences, Iran
| | - Zeinab Aryanian
- Autoimmune Bullous Diseases Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Dermatology, Babol University of Medical Sciences, Babol, Iran.
| | - Sanaz Dastghaib
- Endocrinology and Metabolism Research Center, Shiraz University of Medical Science, Shiraz, Iran; Autophagy Research Centre, Shiraz University of Medical Sciences, Shiraz, Iran.
| |
Collapse
|
2
|
Structural and Dynamic Differences between Calreticulin Mutants Associated with Essential Thrombocythemia. Biomolecules 2023; 13:biom13030509. [PMID: 36979444 PMCID: PMC10046389 DOI: 10.3390/biom13030509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/28/2023] [Accepted: 03/03/2023] [Indexed: 03/12/2023] Open
Abstract
Essential thrombocythemia (ET) is a blood cancer. ET is characterized by an overproduction of platelets that can lead to thrombosis formation. Platelet overproduction occurs in megakaryocytes through a signaling pathway that could involve JAK2, MPL, or CALR proteins. CALR mutations are associated with 25–30% of ET patients; CALR variants must be dimerized to induce ET. We classified these variants into five classes named A to E; classes A and B are the most frequent classes in patients with ET. The dynamic properties of these five classes using structural models of CALR’s C-domain were analyzed using molecular dynamics simulations. Classes A, B, and C are associated with frameshifts in the C-domain. Their dimers can be stable only if a disulfide bond is formed; otherwise, the two monomers repulse each other. Classes D and E cannot be stable as dimers due to the absence of disulfide bonds. Class E and wild-type CALR have similar dynamic properties. These results suggest that the disulfide bond newly formed in classes A, B, and C may be essential for the pathogenicity of these variants. They also underline that class E cannot be directly related to ET but corresponds to human polymorphisms.
Collapse
|
3
|
Antoniotti V, Bellone S, Gonçalves Correia FP, Peri C, Tini S, Ricotti R, Mancioppi V, Gagliardi M, Spadaccini D, Caputo M, Corazzari M, Prodam F. Calreticulin and PDIA3, two markers of endoplasmic reticulum stress, are associated with metabolic alterations and insulin resistance in pediatric obesity: A pilot study. Front Endocrinol (Lausanne) 2022; 13:1003919. [PMID: 36213269 PMCID: PMC9537381 DOI: 10.3389/fendo.2022.1003919] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 09/08/2022] [Indexed: 11/18/2022] Open
Abstract
Our aim was to evaluate the markers of endoplasmic reticulum (ER) stress among children and adolescents with obesity in relation to metabolic alterations. Calreticulin (CALR) and PDIA3 circulating levels were assessed on 52 pediatric subjects-26 patients with obesity and 26 normal weight controls (4-18 years)-enrolled in a pilot study. Clinical and metabolic evaluations were performed (BMI-SDS, insulin, and glucose at fasting and during an oral glucose tolerance test, lipid profile, blood pressure), and metabolic syndrome was detected. PDIA3 was higher (p < 0.02) and CALR slightly higher in children with obesity than in controls. PDIA3 was related positively to the Tanner stages. Both PDIA3 and CALR were positively associated with insulin resistance, cholesterol, and triglycerides and the number of criteria identifying metabolic syndrome and negatively with fasting and post-challenge insulin sensitivity. Our preliminary findings suggest the existence of a link between ER stress and metabolic changes behind obesity complications even at the pediatric age. CALR and PDIA3 could be early markers of insulin resistance and dyslipidemia-related ER stress useful to stratify patients at high risk of further complications.
Collapse
Affiliation(s)
- Valentina Antoniotti
- Struttura Complessa a Direzione Universitaria (SCDU) of Pediatrics, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | - Simonetta Bellone
- Struttura Complessa a Direzione Universitaria (SCDU) of Pediatrics, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | | | - Caterina Peri
- Struttura Complessa a Direzione Universitaria (SCDU) of Pediatrics, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | - Sabrina Tini
- Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | - Roberta Ricotti
- Struttura Complessa a Direzione Universitaria (SCDU) of Pediatrics, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | - Valentina Mancioppi
- Struttura Complessa a Direzione Universitaria (SCDU) of Pediatrics, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | - Mara Gagliardi
- Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
- Center for Translational Research on Autoimmune and Allergic Disease (CAAD) & Interdisciplinary Research Center of Autoimmune Diseases (IRCAD), University of Piemonte Orientale, Novara, Italy
| | - Daniele Spadaccini
- Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | - Marina Caputo
- Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
- Endocrinology, Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy
| | - Marco Corazzari
- Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
- Center for Translational Research on Autoimmune and Allergic Disease (CAAD) & Interdisciplinary Research Center of Autoimmune Diseases (IRCAD), University of Piemonte Orientale, Novara, Italy
- *Correspondence: Marco Corazzari, ; Flavia Prodam,
| | - Flavia Prodam
- Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
- Endocrinology, Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy
- *Correspondence: Marco Corazzari, ; Flavia Prodam,
| |
Collapse
|
4
|
Agellon LB, Michalak M. A View of the Endoplasmic Reticulum Through the Calreticulin Lens. PROGRESS IN MOLECULAR AND SUBCELLULAR BIOLOGY 2021; 59:1-11. [PMID: 34050859 DOI: 10.1007/978-3-030-67696-4_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Calreticulin is well known as an ER-resident protein that serves as the major endoplasmic reticulum (ER) Ca2+ binding protein. This protein has been the major topic of discussion in an international workshop that has been meeting for a quarter of a century. In sharing information about this protein, the field also witnessed remarkable insights into the importance of the ER as an organelle and the role of ER Ca2+ in coordinating ER and cellular functions. Recent technological advances have helped to uncover the contributions of calreticulin in maintaining Ca2+ homeostasis in the ER and to unravel its involvement in a multitude of cellular processes as highlighted in this collection of articles. The continuing revelations of unexpected involvement of calreticulin and Ca2+ in many critical aspects of cellular function promises to further improve insights into the significance of this protein in the promotion of physiology as well as prevention of pathology.
Collapse
Affiliation(s)
- Luis B Agellon
- School of Human Nutrition, McGill University, Ste. Anne de Bellevue, QC, Canada.
| | - Marek Michalak
- Department of Biochemistry, University of Alberta, Edmonton, AB, Canada
| |
Collapse
|
5
|
Venkatesan A, Geng J, Kandarpa M, Wijeyesakere SJ, Bhide A, Talpaz M, Pogozheva ID, Raghavan M. Mechanism of mutant calreticulin-mediated activation of the thrombopoietin receptor in cancers. J Cell Biol 2021; 220:212031. [PMID: 33909030 PMCID: PMC8085772 DOI: 10.1083/jcb.202009179] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 02/10/2021] [Accepted: 03/17/2021] [Indexed: 12/21/2022] Open
Abstract
Myeloproliferative neoplasms (MPNs) are frequently driven by mutations within the C-terminal domain (C-domain) of calreticulin (CRT). CRTDel52 and CRTIns5 are recurrent mutations. Oncogenic transformation requires both mutated CRT and the thrombopoietin receptor (Mpl), but the molecular mechanism of CRT-mediated constitutive activation of Mpl is unknown. We show that the acquired C-domain of CRTDel52 mediates both Mpl binding and disulfide-linked CRTDel52 dimerization. Cysteine mutations within the novel C-domain (C400A and C404A) and the conserved N-terminal domain (N-domain; C163A) of CRTDel52 are required to reduce disulfide-mediated dimers and multimers of CRTDel52. Based on these data and published structures of CRT oligomers, we identify an N-domain dimerization interface relevant to both WT CRT and CRTDel52. Elimination of disulfide bonds and ionic interactions at both N-domain and C-domain dimerization interfaces is required to abrogate the ability of CRTDel52 to mediate cell proliferation via Mpl. Thus, MPNs exploit a natural dimerization interface of CRT combined with C-domain gain of function to achieve cell transformation.
Collapse
Affiliation(s)
- Arunkumar Venkatesan
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI
| | - Jie Geng
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI
| | - Malathi Kandarpa
- Department of Internal Medicine/Division of Hematology/Oncology, University of Michigan Rogel Cancer Center, Ann Arbor, MI
| | | | - Ashwini Bhide
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI
| | - Moshe Talpaz
- Department of Internal Medicine/Division of Hematology/Oncology, University of Michigan Rogel Cancer Center, Ann Arbor, MI
| | - Irina D Pogozheva
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, MI
| | - Malini Raghavan
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI
| |
Collapse
|
6
|
Roles of Calreticulin in Protein Folding, Immunity, Calcium Signaling and Cell Transformation. PROGRESS IN MOLECULAR AND SUBCELLULAR BIOLOGY 2021; 59:145-162. [PMID: 34050865 DOI: 10.1007/978-3-030-67696-4_7] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The endoplasmic reticulum (ER) is an organelle that mediates the proper folding and assembly of proteins destined for the cell surface, the extracellular space and subcellular compartments such as the lysosomes. The ER contains a wide range of molecular chaperones to handle the folding requirements of a diverse set of proteins that traffic through this compartment. The lectin-like chaperones calreticulin and calnexin are an important class of structurally-related chaperones relevant for the folding and assembly of many N-linked glycoproteins. Despite the conserved mechanism of action of these two chaperones in nascent protein recognition and folding, calreticulin has unique functions in cellular calcium signaling and in the immune response. The ER-related functions of calreticulin in the assembly of major histocompatibility complex (MHC) class I molecules are well-studied and provide many insights into the modes of substrate and co-chaperone recognition by calreticulin. Calreticulin is also detectable on the cell surface under some conditions, where it induces the phagocytosis of apoptotic cells. Furthermore, mutations of calreticulin induce cell transformation in myeloproliferative neoplasms (MPN). Studies of the functions of the mutant calreticulin in cell transformation and immunity have provided many insights into the normal biology of calreticulin, which are discussed.
Collapse
|
7
|
Lu A, Pallero MA, Owusu BY, Borovjagin AV, Lei W, Sanders PW, Murphy-Ullrich JE. Calreticulin is important for the development of renal fibrosis and dysfunction in diabetic nephropathy. Matrix Biol Plus 2020; 8:100034. [PMID: 33543033 PMCID: PMC7852315 DOI: 10.1016/j.mbplus.2020.100034] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/13/2020] [Accepted: 03/20/2020] [Indexed: 12/14/2022] Open
Abstract
Previously, our lab showed that the endoplasmic reticulum (ER) and calcium regulatory protein, calreticulin (CRT), is important for collagen transcription, secretion, and assembly into the extracellular matrix (ECM) and that ER CRT is critical for TGF-β stimulation of type I collagen transcription through stimulation of ER calcium release and NFAT activation. Diabetes is the leading cause of end stage renal disease. TGF-β is a key factor in the pathogenesis of diabetic nephropathy. However, the role of calreticulin (Calr) in fibrosis of diabetic nephropathy has not been investigated. In current work, we used both in vitro and in vivo approaches to assess the role of ER CRT in TGF-β and glucose stimulated ECM production by renal tubule cells and in diabetic mice. Knockdown of CALR by siRNA in a human proximal tubular cell line (HK-2) showed reduced induction of soluble collagen when stimulated by TGF-β or high glucose as compared to control cells, as well as a reduction in fibronectin and collagen IV transcript levels. CRT protein is increased in kidneys of mice made diabetic with streptozotocin and subjected to uninephrectomy to accelerate renal tubular injury as compared to controls. We used renal-targeted ultrasound delivery of Cre-recombinase plasmid to knockdown specifically CRT expression in the remaining kidney of uninephrectomized Calr fl/fl mice with streptozotocin-induced diabetes. This approach reduced CRT expression in the kidney, primarily in the tubular epithelium, by 30-55%, which persisted over the course of the studies. Renal function as measured by the urinary albumin/creatinine ratio was improved in the mice with knockdown of CRT as compared to diabetic mice injected with saline or subjected to ultrasound and injected with control GFP plasmid. PAS staining of kidneys and immunohistochemical analyses of collagen types I and IV show reduced glomerular and tubulointerstitial fibrosis. Renal sections from diabetic mice with CRT knockdown showed reduced nuclear NFAT in renal tubules and treatment of diabetic mice with 11R-VIVIT, an NFAT inhibitor, reduced proteinuria and renal fibrosis. These studies identify ER CRT as an important regulator of TGF-β stimulated ECM production in the diabetic kidney, potentially through regulation of NFAT-dependent ECM transcription.
Collapse
Key Words
- 4-PBA, 4-phenylbutyrate
- CRT, calreticulin
- Calreticulin
- Collagen
- Diabetic nephropathy
- ECM, extracellular matrix
- EMT, epithelial to mesenchymal transition
- ER, endoplasmic reticulum
- Fibrosis
- GRP78, glucose related protein 78
- MB/US, microbubble/ultrasound
- NFAT
- NFAT, nuclear factor of activated T cells
- PAS, Periodic Acid-Schiff
- STZ, streptozotocin
- TGF-β, transforming growth factor-β
- UPR, unfolded protein response
Collapse
Affiliation(s)
- Ailing Lu
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL35294-0019, USA
| | - Manuel A. Pallero
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL35294-0019, USA
| | - Benjamin Y. Owusu
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL35294-0019, USA
| | - Anton V. Borovjagin
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL35294-0019, USA
| | - Weiqi Lei
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL35294-0019, USA
| | - Paul W. Sanders
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294-0019, USA
- Department of Veterans Affairs Medical Center, Birmingham, AL 35233, USA
| | | |
Collapse
|
8
|
Wang X, Liu X, Chen Y, Wang H, Zhang R, Zhang Q, Wei Y, Shi S, Li X. Calreticulin regulated intrinsic apoptosis through mitochondria-dependent and independent pathways mediated by ER stress in arsenite exposed HT-22 cells. CHEMOSPHERE 2020; 251:126466. [PMID: 32443253 DOI: 10.1016/j.chemosphere.2020.126466] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 03/03/2020] [Accepted: 03/09/2020] [Indexed: 06/11/2023]
Abstract
Arsenic is a naturally occurring environmental toxicant. Chronic exposure to arsenic is linked with neurological damage. Although the mechanisms remain to be elucidated, it is currently believed that neural cell apoptosis is one of the underlying mechanisms of arsenic-induced neurotoxicity. Calreticulin (CRT) is a quality control chaperone located in the lumen of the endoplasmic reticulum (ER), which participates in many signaling pathways including apoptosis. However, the role of CRT in apoptosis is controversial. Whether CRT plays a role in arsenite-induced apoptosis and the relationship between CRT and ER stress-mediated apoptosis have not been mentioned before. In this study, we found that CRT expression as well as the cell apoptosis levels increased in a dose dependent manner upon arsenite exposure in HT-22 cells, a mouse hippocampal neural cell line. In addition, arsenite exposure resulted in the up-regulation of ER stress indicator GRP78 and ER stress-related proteins including p-PERK, ATF4, CHOP, calpain2 and cleaved caspases-12, accompanied by the down-regulation of Bcl-2 and up-regulation of Bax and cleaved caspase-3. Silence of CRT remarkably alleviated arsenite-induced apoptosis and reversed the expression of the proteins above. Our findings confirmed the role of CRT in the induction of apoptosis upon arsenite exposure and suggested that CRT mediated the intrinsic apoptotic cell death including both mitochondria-dependent (PERK/ATF4/CHOP/Bcl-2) and independent (calpain2/caspases-12) pathways initiated by ER stress, which we believed to be a previously undocumented property of arsenite-induced apoptosis.
Collapse
Affiliation(s)
- Xiaotong Wang
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Xudan Liu
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Yao Chen
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Huanhuan Wang
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Ruo Zhang
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Qianhui Zhang
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Yuting Wei
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Sainan Shi
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Xin Li
- Department of Occupational and Environmental Health, Key Laboratory of Arsenic-related Biological Effects and Prevention and Treatment in Liaoning Province, School of Public Health, China Medical University, Shenyang, 110122, China.
| |
Collapse
|
9
|
Wang L, Song Y. Molecular insights into the effect of an apoptotic raft-like bilayer on the conformation and dynamics of calreticulin. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1862:183146. [PMID: 31816323 DOI: 10.1016/j.bbamem.2019.183146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 11/29/2019] [Accepted: 12/02/2019] [Indexed: 11/29/2022]
Abstract
Cell surface calreticulin (CRT) can mediate apoptotic cells removal by binding and activating LDL receptor-related protein (LRP1). Phosphatidylserine (PS) lipids in the inner leaflet of the cell membrane are externalized and become exposed in cholesterol (CHOL)-rich membrane raft-like microdomain during apoptosis and co-localized with cell surface CRT. How the apoptotic raft-like membrane microdomain affects the structure and dynamics of CRT, further affecting CRT binding with LRP1 to signal apoptotic-cell clearance, remains unknown. In this study, we investigate the interactions between CRT and raft-like bilayers with or without POPS lipids with molecular dynamics simulations. In addition, the effect of an apoptotic raft bilayer on the binding between CRT and thrombospondin-1 (TSP1), a ligand of CRT on the cell surface to signal focal adhesion disassembly, was also investigated. Results of single CRT interactions with raft-like bilayers show that PS lipids in apoptotic raft-like bilayer increased the interactions between CRT and lipid bilayer, which enhanced the conformational stability and increased dynamical motion of CRT. The microscopic and mesoscopic properties of apoptotic raft-like bilayer were altered by the binding of CRT with lipid bilayer. Results of CRT-TSP1 complex interactions with raft-like bilayers show that the binding free energy between TSP1 and CRT was reduced in apoptotic raft-like bilayer environment. This study provides molecular and structural insight into the effect of an apoptotic raft-like bilayer on the conformation and dynamics of CRT, which could enrich our understanding of CRT-mediated apoptotic-cell clearance and focal adhesion disassembly.
Collapse
Affiliation(s)
- Lingyun Wang
- Department of Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294, United States
| | - Yuhua Song
- Department of Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, AL 35294, United States.
| |
Collapse
|
10
|
Wu S, Ma S, Yin X, Yi P, Liu J. An integrated PKD1-dependent signaling network amplifies IRE1 prosurvival signaling. J Biol Chem 2019; 294:11119-11130. [PMID: 31167779 DOI: 10.1074/jbc.ra118.003311] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 03/21/2019] [Indexed: 12/13/2022] Open
Abstract
Following the accumulation of improperly folded proteins in the endoplasmic reticulum (ER), a condition known as ER stress in this compartment triggers an adaptive signaling pathway referred to as the unfolded protein response (UPR). The UPR aims at restoring ER homeostasis; if the ER stress cannot be resolved, apoptosis is triggered. However, the mechanisms responsible for regulating the balance between cell life and death decisions that occur after exposure to ER stress remain unclear. Protein kinase D1 (PKD1) has been reported to initiate protective signaling against oxidative stress or ischemia, two conditions that impinge on the induction of ER stress. In addition, the high levels of expression of PKD1, observed in highly proliferative cancers and tumors with poor prognosis, contribute to enhanced resistance to chemotherapy. In this study, we show that the ER stress inducers tunicamycin and thapsigargin lead to the activation of PKD1 in human prostate cancer PC-3 cells and in hepatoma HepG2 cells through a PKCδ-dependent mechanism. Moreover, our data indicate that PKD1 is required for the stabilization of inositol-requiring enzyme 1 (IRE1) and the subsequent regulation of its activity. PKD1 activation contributes to the phosphorylation of mitogen-activated protein kinase phosphatase 1, resulting in decreased IRE1-mediated c-Jun N-terminal kinase activation. This study unveils the existence of a novel PKD1-dependent prosurvival mechanism that is activated upon ER stress and selectively enhances IRE1 prosurvival signaling.
Collapse
Affiliation(s)
- Shiyong Wu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, China
| | - Shumin Ma
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, China
| | - Xueliang Yin
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, China
| | - Ping Yi
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, China
| | - Jianfeng Liu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, China
| |
Collapse
|
11
|
Yen CL, Liao YC, Chen RF, Huang YF, Chung WC, Lo PC, Chang CF, Wu PC, Shieh DB, Jiang ST, Shieh CC. Targeted Delivery of Curcumin Rescues Endoplasmic Reticulum–Retained Mutant NOX2 Protein and Avoids Leukocyte Apoptosis. THE JOURNAL OF IMMUNOLOGY 2019; 202:3394-3403. [DOI: 10.4049/jimmunol.1801599] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 04/05/2019] [Indexed: 12/15/2022]
|
12
|
Pandya UM, Egbuta C, Abdullah Norman TM, Chiang CYE, Wiersma VR, Panchal RG, Bremer E, Eggleton P, Gold LI. The Biophysical Interaction of the Danger-Associated Molecular Pattern (DAMP) Calreticulin with the Pattern-Associated Molecular Pattern (PAMP) Lipopolysaccharide. Int J Mol Sci 2019; 20:ijms20020408. [PMID: 30669362 PMCID: PMC6359024 DOI: 10.3390/ijms20020408] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 01/11/2019] [Accepted: 01/12/2019] [Indexed: 12/15/2022] Open
Abstract
The endoplasmic reticulum (ER) chaperone protein, calreticulin (CRT), is essential for proper glycoprotein folding and maintaining cellular calcium homeostasis. During ER stress, CRT is overexpressed as part of the unfolded protein response (UPR). In addition, CRT can be released as a damage-associated molecular pattern (DAMP) molecule that may interact with pathogen-associated molecular patterns (PAMPs) during the innate immune response. One such PAMP is lipopolysaccharide (LPS), a component of the gram-negative bacterial cell wall. In this report, we show that recombinant and native human placental CRT strongly interacts with LPS in solution, solid phase, and the surface of gram-negative and gram-positive bacteria. Furthermore, LPS induces oilgomerization of CRT with a disappearance of the monomeric form. The application of recombinant CRT (rCRT) to size exclusion and anion exchange chromatography shows an atypical heterogeneous elution profile, indicating that LPS affects the conformation and ionic charge of CRT. Interestingly, LPS bound to CRT is detected in sera of bronchiectasis patients with chronic bacterial infections. By ELISA, rCRT dose-dependently bound to solid phase LPS via the N- and C-domain globular head region of CRT and the C-domain alone. The specific interaction of CRT with LPS may be important in PAMP innate immunity.
Collapse
Affiliation(s)
- Unnati M Pandya
- New York University School of Medicine--Langone Health, Departments of Medicine and Pathology, Division of Translational Medicine, 550 First Ave, New York, NY 10016, USA.
| | - Chinaza Egbuta
- New York University School of Medicine--Langone Health, Departments of Medicine and Pathology, Division of Translational Medicine, 550 First Ave, New York, NY 10016, USA.
| | | | - Chih-Yuan Edward Chiang
- Target Discovery and Experimental Microbiology Department, Molecular and Translational Sciences Division, US Army Research Institute of Infectious Diseases, Frederick, MD 21702, USA.
| | - Valerie R Wiersma
- Department of Hematology, University Medical Center Groningen, University of Groningen, 9713GZ Groningen, The Netherlands.
| | - Rekha G Panchal
- Target Discovery and Experimental Microbiology Department, Molecular and Translational Sciences Division, US Army Research Institute of Infectious Diseases, Frederick, MD 21702, USA.
| | - Edwin Bremer
- Department of Hematology, University Medical Center Groningen, University of Groningen, 9713GZ Groningen, The Netherlands.
| | - Paul Eggleton
- University of Exeter Medical School, Exeter EX1 2LU, Devon UK.
- UCB Pharma, Slough SL1 3WE, UK.
| | - Leslie I Gold
- New York University School of Medicine--Langone Health, Departments of Medicine and Pathology, Division of Translational Medicine, 550 First Ave, New York, NY 10016, USA.
| |
Collapse
|
13
|
Schiavon CR, Griffin ME, Pirozzi M, Parashuraman R, Zhou W, Jinnah HA, Reines D, Kahn RA. Compositional complexity of rods and rings. Mol Biol Cell 2018; 29:2303-2316. [PMID: 30024290 PMCID: PMC6249804 DOI: 10.1091/mbc.e18-05-0274] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Rods and rings (RRs) are large linear- or circular-shaped structures typically described as polymers of IMPDH (inosine monophosphate dehydrogenase). They have been observed across a wide variety of cell types and species and can be induced to form by inhibitors of IMPDH. RRs are thought to play a role in the regulation of de novo guanine nucleotide synthesis; however, the function and regulation of RRs is poorly understood. Here we show that the regulatory GTPase, ARL2, a subset of its binding partners, and several resident proteins at the endoplasmic reticulum (ER) also localize to RRs. We also have identified two new inducers of RR formation: AICAR and glucose deprivation. We demonstrate that RRs can be disassembled if guanine nucleotides can be generated by salvage synthesis regardless of the inducer. Finally, we show that there is an ordered addition of components as RRs mature, with IMPDH first forming aggregates, followed by ARL2, and only later calnexin, a marker of the ER. These findings suggest that RRs are considerably more complex than previously thought and that the function(s) of RRs may include involvement of a regulatory GTPase, its effectors, and potentially contacts with intracellular membranes.
Collapse
Affiliation(s)
- Cara R Schiavon
- Cancer Biology Graduate Program, Graduate Division of Biomedical and Biological Sciences, Laney Graduate School, Atlanta, GA 30307
| | - Maxwell E Griffin
- Cancer Biology Graduate Program, Graduate Division of Biomedical and Biological Sciences, Laney Graduate School, Atlanta, GA 30307
| | - Marinella Pirozzi
- EuroBioImaging Facility, Institute of Protein Biochemistry, 80131 Naples, Italy
| | - Raman Parashuraman
- EuroBioImaging Facility, Institute of Protein Biochemistry, 80131 Naples, Italy
| | - Wei Zhou
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA 30322
| | - H A Jinnah
- Department of Neurology and Human Genetics, Emory University School of Medicine, Atlanta, GA 30322
| | - Daniel Reines
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA 30322
| | - Richard A Kahn
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA 30322
| |
Collapse
|