1
|
Elrashidy RA, Zakaria EM, Hasan RA, Elmaghraby AM, Hassan DA, Abdelgalil RM, Abdelmohsen SR, Negm AM, Khalil AS, Eraque AMS, Ahmed RM, Sabbah WS, Ahmed AA, Ibrahim SE. Implication of endoplasmic reticulum stress and mitochondrial perturbations in remote liver injury after renal ischemia/reperfusion in rats: potential protective role of azilsartan. Redox Rep 2024; 29:2319963. [PMID: 38411133 PMCID: PMC10903753 DOI: 10.1080/13510002.2024.2319963] [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] [Indexed: 02/28/2024] Open
Abstract
Objectives: Distant liver injury is a complication of renal ischemia-reperfusion (I/R) injury, which imposes mortality and economic burden. This study aimed to elucidate the cross-talk of endoplasmic reticulum (ER) stress and mitochondrial perturbations in renal I/R-induced liver injury, and the potential hepatoprotective effect of azilsartan (AZL).Methods: Male albino Wister rats were pre-treated with AZL (3 mg/kg/day, PO) for 7 days then a bilateral renal I/R or sham procedure was performed. Activities of liver enzymes were assessed in plasma. The structure and ultra-structure of hepatocytes were assessed by light and electron microscopy. Markers of ER stress, mitochondrial biogenesis and apoptosis were analyzed in livers of rats.Results: Renal ischemic rats showed higher plasma levels of liver enzymes than sham-operated rats, coupled with histological and ultra-structural alterations in hepatocytes. Mechanistically, there was up-regulation of ER stress markers and suppression of mitochondrial biogenesis-related proteins and enhanced apoptosis in livers of renal ischemic rats. These abnormalities were almost abrogated by AZL pretreatment.Discussion: Our findings uncovered the involvement of mitochondrial perturbations, ER stress and apoptosis in liver injury following renal I/R, and suggested AZL as a preconditioning strategy to ameliorate remote liver injury in patients susceptible to renal I/R after adequate clinical testing.
Collapse
Affiliation(s)
- Rania A. Elrashidy
- Biochemistry Department, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Esraa M. Zakaria
- Pharmacology Department, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Rehab A. Hasan
- Histology and Cell Biology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
| | - Asmaa M. Elmaghraby
- Histology and Cell Biology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
| | - Dina A. Hassan
- Histology and Cell Biology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
| | - Ranya M. Abdelgalil
- Anatomy and Embryology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
| | - Shaimaa R. Abdelmohsen
- Anatomy and Embryology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
| | - Amira M. Negm
- Medical Physiology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
| | - Azza S. Khalil
- Medical Physiology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
| | - Ayat M. S. Eraque
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
| | - Reem M. Ahmed
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
| | - Walaa S. Sabbah
- Anatomy and Embryology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
| | - Ahmed A. Ahmed
- Medical Student, Faculty of Medicine, Kasr Al Ainy, Cairo University, Cairo, Egypt
| | - Samah E. Ibrahim
- Medical Physiology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
| |
Collapse
|
2
|
Liu Y, Xu C, Gu R, Han R, Li Z, Xu X. Endoplasmic reticulum stress in diseases. MedComm (Beijing) 2024; 5:e701. [PMID: 39188936 PMCID: PMC11345536 DOI: 10.1002/mco2.701] [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: 02/21/2023] [Revised: 07/30/2024] [Accepted: 07/31/2024] [Indexed: 08/28/2024] Open
Abstract
The endoplasmic reticulum (ER) is a key organelle in eukaryotic cells, responsible for a wide range of vital functions, including the modification, folding, and trafficking of proteins, as well as the biosynthesis of lipids and the maintenance of intracellular calcium homeostasis. A variety of factors can disrupt the function of the ER, leading to the aggregation of unfolded and misfolded proteins within its confines and the induction of ER stress. A conserved cascade of signaling events known as the unfolded protein response (UPR) has evolved to relieve the burden within the ER and restore ER homeostasis. However, these processes can culminate in cell death while ER stress is sustained over an extended period and at elevated levels. This review summarizes the potential role of ER stress and the UPR in determining cell fate and function in various diseases, including cardiovascular diseases, neurodegenerative diseases, metabolic diseases, autoimmune diseases, fibrotic diseases, viral infections, and cancer. It also puts forward that the manipulation of this intricate signaling pathway may represent a novel target for drug discovery and innovative therapeutic strategies in the context of human diseases.
Collapse
Affiliation(s)
- Yingying Liu
- Department of Aviation Clinical Medicine, Air Force Medical CenterPLABeijingChina
| | - Chunling Xu
- School of Pharmaceutical SciencesTsinghua UniversityBeijingChina
| | - Renjun Gu
- School of Chinese MedicineNanjing University of Chinese MedicineNanjingChina
- Department of Gastroenterology and HepatologyJinling HospitalMedical School of Nanjing UniversityNanjingChina
| | - Ruiqin Han
- State Key Laboratory of Medical Molecular BiologyDepartment of Biochemistry and Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Ziyu Li
- School of Acupuncture and TuinaSchool of Regimen and RehabilitationNanjing University of Chinese MedicineNanjingChina
| | - Xianrong Xu
- Department of Aviation Clinical Medicine, Air Force Medical CenterPLABeijingChina
| |
Collapse
|
3
|
Li TL, Zhu NN, Yin Z, Sun J, Guo JP, Yuan HT, Shi XM, Guo HY, Li SX, Shan ZL. Transcriptomic analysis of epicardial adipose tissue reveals the potential crosstalk genes and immune relationship between type 2 diabetes mellitus and atrial fibrillation. Gene 2024; 920:148528. [PMID: 38703871 DOI: 10.1016/j.gene.2024.148528] [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: 12/02/2023] [Revised: 03/27/2024] [Accepted: 05/01/2024] [Indexed: 05/06/2024]
Abstract
BACKGROUND The complex relationship between atrial fibrillation (AF) and type 2 diabetes mellitus (T2DM) suggests a potential role for epicardial adipose tissue (EAT) that requires further investigation. This study employs bioinformatics and experimental approaches to clarify EAT's role in linking T2DM and AF, aiming to unravel the biological mechanisms involved. METHOD Bioinformatics analysis initially identified common differentially expressed genes (DEGs) in EAT from T2DM and AF datasets. Pathway enrichment and network analyses were then performed to determine the biological significance and network connections of these DEGs. Hub genes were identified through six CytoHubba algorithms and subsequently validated biologically, with further in-depth analyses confirming their roles and interactions. Experimentally, db/db mice were utilized to establish a T2DM model. AF induction was executed via programmed transesophageal electrical stimulation and burst pacing, focusing on comparing the incidence and duration of AF. Frozen sections and Hematoxylin and Eosin (H&E) staining illuminated the structures of the heart and EAT. Moreover, quantitative PCR (qPCR) measured the expression of hub genes. RESULTS The study identified 106 DEGs in EAT from T2DM and AF datasets, underscoring significant pathways in energy metabolism and immune regulation. Three hub genes, CEBPZ, PAK1IP1, and BCCIP, emerged as pivotal in this context. In db/db mice, a marked predisposition towards AF induction and extended duration was observed, with HE staining verifying the presence of EAT. Additionally, qPCR validated significant changes in hub genes expression in db/db mice EAT. In-depth analysis identified 299 miRNAs and 33 TFs as potential regulators, notably GRHL1 and MYC. GeneMANIA analysis highlighted the hub genes' critical roles in stress responses and leukocyte differentiation, while immune profile correlations highlighted their impact on mast cells and neutrophils, emphasizing the genes' significant influence on immune regulation within the context of T2DM and AF. CONCLUSION This investigation reveals the molecular links between T2DM and AF with a focus on EAT. Targeting these pathways, especially EAT-related ones, may enable personalized treatments and improved outcomes.
Collapse
Affiliation(s)
- Tian-Lun Li
- Postgraduate School, Medical School of Chinese PLA, Beijing, China; Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Na-Na Zhu
- Postgraduate School, Medical School of Chinese PLA, Beijing, China; Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Zhao Yin
- Postgraduate School, Medical School of Chinese PLA, Beijing, China; Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Jiao Sun
- Postgraduate School, Medical School of Chinese PLA, Beijing, China; Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Jian-Pin Guo
- Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Hong-Tao Yuan
- Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Xiang-Min Shi
- Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Hong-Yang Guo
- Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Shi-Xing Li
- Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Zhao-Liang Shan
- Postgraduate School, Medical School of Chinese PLA, Beijing, China; Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital, Beijing, China.
| |
Collapse
|
4
|
Yang C, Dong W, Wang Y, Dong X, Xu X, Yu X, Wang J. DDIT3 aggravates TMJOA cartilage degradation via Nrf2/HO-1/NLRP3-mediated autophagy. Osteoarthritis Cartilage 2024; 32:921-937. [PMID: 38719085 DOI: 10.1016/j.joca.2024.04.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 03/10/2024] [Accepted: 04/12/2024] [Indexed: 05/18/2024]
Abstract
OBJECTIVE DNA damage-inducible transcript 3 (DDIT3), as a downstream transcription factor of endoplasmic reticulum stress, is reported to regulate chondrogenic differentiation under physiological and pathological state. However, the specific involvement of DDIT3 in the degradation of condylar cartilage of temporomandibular joint osteoarthritis (TMJOA) is unclarified. DESIGN The expression patterns of DDIT3 in condylar cartilage from monosodium iodoacetate-induced TMJOA mice were examined to uncover the potential role of DDIT3 in TMJOA. The Ddit3 knockout (Ddit3-/-) mice and their wildtype littermates (Ddit3+/+) were used to clarify the effect of DDIT3 on cartilage degradation. Primary condylar chondrocytes and ATDC5 cells were applied to explore the mechanisms of DDIT3 on autophagy and extracellular matrix (ECM) degradation in chondrocytes. The autophagy inhibitor chloroquine (CQ) was used to determine the effect of DDIT3-inhibited autophagy in vivo. RESULTS DDIT3 were highly expressed in condylar cartilage from TMJOA mice. Ddit3 knockout alleviated condylar cartilage degradation and subchondral bone loss, compared with their wildtype littermates. In vitro study demonstrated that DDIT3 exacerbated ECM degradation in chondrocytes induced by TNF-α through inhibiting autophagy. The intraperitoneal injection of CQ further confirmed that Ddit3 knockout alleviated cartilage degradation in TMJOA through activating autophagy in vivo. CONCLUSIONS Our findings identified the crucial role of DDIT3-inhibited autophagy in condylar cartilage degradation during the development of TMJOA.
Collapse
Affiliation(s)
- Chang Yang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Wei Dong
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Yan Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Xiaofei Dong
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Xiaoxiao Xu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Xijie Yu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Jiawei Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China.
| |
Collapse
|
5
|
Nair KA, Liu B. Navigating the landscape of the unfolded protein response in CD8 + T cells. Front Immunol 2024; 15:1427859. [PMID: 39026685 PMCID: PMC11254671 DOI: 10.3389/fimmu.2024.1427859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2024] [Accepted: 06/24/2024] [Indexed: 07/20/2024] Open
Abstract
Endoplasmic reticulum stress occurs due to large amounts of misfolded proteins, hypoxia, nutrient deprivation, and more. The unfolded protein is a complex intracellular signaling network designed to operate under this stress. Composed of three individual arms, inositol-requiring enzyme 1, protein kinase RNA-like ER kinase, and activating transcription factor-6, the unfolded protein response looks to resolve stress and return to proteostasis. The CD8+ T cell is a critical cell type for the adaptive immune system. The unfolded protein response has been shown to have a wide-ranging spectrum of effects on CD8+ T cells. CD8+ T cells undergo cellular stress during activation and due to environmental insults. However, the magnitude of the effects this response has on CD8+ T cells is still understudied. Thus, studying these pathways is important to unraveling the inner machinations of these powerful cells. In this review, we will highlight the recent literature in this field, summarize the three pathways of the unfolded protein response, and discuss their roles in CD8+ T cell biology and functionality.
Collapse
Affiliation(s)
- Keith Alan Nair
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, United States
- The Pelotonia Institute for Immuno-Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH, United States
| | - Bei Liu
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, United States
- The Pelotonia Institute for Immuno-Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH, United States
| |
Collapse
|
6
|
Yagan M, Najam S, Hu R, Wang Y, Dadi P, Xu Y, Simmons AJ, Stein R, Adams CM, Jacobson DA, Lau K, Liu Q, Gu G. Atf4 protects islet β-cell identity and function under acute glucose-induced stress but promotes β-cell failure in the presence of free fatty acid. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.28.601249. [PMID: 39005465 PMCID: PMC11244863 DOI: 10.1101/2024.06.28.601249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
Glucolipotoxicity, caused by combined hyperglycemia and hyperlipidemia, results in β-cell failure and type 2 diabetes (T2D) via cellular stress-related mechanisms. Activating transcription factor 4 (Atf4) is an essential effector of stress response. We show here that Atf4 expression in β-cells is dispensable for glucose homeostasis in young mice, but it is required for β-cell function during aging and under obesity-related metabolic stress. Henceforth, aged Atf4- deficient β-cells display compromised secretory function under acute hyperglycemia. In contrast, they are resistant to acute free fatty acid-induced loss-of identity and dysfunction. At molecular level, Atf4 -deficient β-cells down-regulate genes involved in protein translation, reducing β-cell identity gene products under high glucose. They also upregulate several genes involved in lipid metabolism or signaling, likely contributing to their resistance to free fatty acid-induced dysfunction. These results suggest that Atf4 activation is required for β-cell identity and function under high glucose, but this paradoxically induces β-cell failure in the presence of high levels of free fatty acids. Different branches of Atf4 activity could be manipulated for protecting β-cells from metabolic stress-induced failure. Highlights Atf4 is dispensable in β-cells in young miceAtf4 protects β-cells under high glucoseAtf4 exacerbate fatty acid-induced β-cell defectsAtf4 activates translation but depresses lipid-metabolism.
Collapse
|
7
|
Sharifi S, Yamamoto T, Zeug A, Elsner M, Avezov E, Mehmeti I. Non-esterified fatty acid palmitate facilitates oxidative endoplasmic reticulum stress and apoptosis of β-cells by upregulating ERO-1α expression. Redox Biol 2024; 73:103170. [PMID: 38692092 PMCID: PMC11070623 DOI: 10.1016/j.redox.2024.103170] [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: 04/11/2024] [Revised: 04/24/2024] [Accepted: 04/26/2024] [Indexed: 05/03/2024] Open
Abstract
Adipose tissue-derived non-esterified saturated long-chain fatty acid palmitate (PA) decisively contributes to β-cell demise in type 2 diabetes mellitus in part through the excessive generation of hydrogen peroxide (H2O2). The endoplasmic reticulum (ER) as the primary site of oxidative protein folding could represent a significant source of H2O2. Both ER-oxidoreductin-1 (ERO-1) isoenzymes, ERO-1α and ERO-1β, catalyse oxidative protein folding within the ER, generating equimolar amounts of H2O2 for every disulphide bond formed. However, whether ERO-1-derived H2O2 constitutes a potential source of cytotoxic luminal H2O2 under lipotoxic conditions is still unknown. Here, we demonstrate that both ERO-1 isoforms are expressed in pancreatic β-cells, but interestingly, PA only significantly induces ERO-1α. Its specific deletion significantly attenuates PA-mediated oxidative ER stress and subsequent β-cell death by decreasing PA-mediated ER-luminal and mitochondrial H2O2 accumulation, by counteracting the dysregulation of ER Ca2+ homeostasis, and by mitigating the reduction of mitochondrial membrane potential and lowered ATP content. Moreover, ablation of ERO-1α alleviated PA-induced hyperoxidation of the ER redox milieu. Importantly, ablation of ERO-1α did not affect the insulin secretory capacity, the unfolded protein response, or ER redox homeostasis under steady-state conditions. The involvement of ERO-1α-derived H2O2 in PA-mediated β-cell lipotoxicity was corroborated by the overexpression of a redox-active ERO-1α underscoring the proapoptotic activity of ERO-1α in pancreatic β-cells. Overall, our findings highlight the critical role of ERO-1α-derived H2O2 in lipotoxic ER stress and β-cell failure.
Collapse
Affiliation(s)
- Sarah Sharifi
- Institute of Clinical Biochemistry, Hannover Medical School, 30625, Hannover, Germany
| | - Tomoko Yamamoto
- Institute of Clinical Biochemistry, Hannover Medical School, 30625, Hannover, Germany
| | - Andre Zeug
- Institute for Neurophysiology, Hannover Medical School, 30625, Hannover, Germany
| | - Matthias Elsner
- Institute of Clinical Biochemistry, Hannover Medical School, 30625, Hannover, Germany
| | - Edward Avezov
- Department of Clinical Neurosciences and UK Dementia Research Institute, University of Cambridge, CB2 0AH Cambridge, UK
| | - Ilir Mehmeti
- Institute of Clinical Biochemistry, Hannover Medical School, 30625, Hannover, Germany.
| |
Collapse
|
8
|
Casas-Martinez JC, Samali A, McDonagh B. Redox regulation of UPR signalling and mitochondrial ER contact sites. Cell Mol Life Sci 2024; 81:250. [PMID: 38847861 PMCID: PMC11335286 DOI: 10.1007/s00018-024-05286-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/11/2024] [Accepted: 05/18/2024] [Indexed: 06/13/2024]
Abstract
Mitochondria and the endoplasmic reticulum (ER) have a synergistic relationship and are key regulatory hubs in maintaining cell homeostasis. Communication between these organelles is mediated by mitochondria ER contact sites (MERCS), allowing the exchange of material and information, modulating calcium homeostasis, redox signalling, lipid transfer and the regulation of mitochondrial dynamics. MERCS are dynamic structures that allow cells to respond to changes in the intracellular environment under normal homeostatic conditions, while their assembly/disassembly are affected by pathophysiological conditions such as ageing and disease. Disruption of protein folding in the ER lumen can activate the Unfolded Protein Response (UPR), promoting the remodelling of ER membranes and MERCS formation. The UPR stress receptor kinases PERK and IRE1, are located at or close to MERCS. UPR signalling can be adaptive or maladaptive, depending on whether the disruption in protein folding or ER stress is transient or sustained. Adaptive UPR signalling via MERCS can increase mitochondrial calcium import, metabolism and dynamics, while maladaptive UPR signalling can result in excessive calcium import and activation of apoptotic pathways. Targeting UPR signalling and the assembly of MERCS is an attractive therapeutic approach for a range of age-related conditions such as neurodegeneration and sarcopenia. This review highlights the emerging evidence related to the role of redox mediated UPR activation in orchestrating inter-organelle communication between the ER and mitochondria, and ultimately the determination of cell function and fate.
Collapse
Affiliation(s)
- Jose C Casas-Martinez
- Discipline of Physiology, School of Medicine, University of Galway, Galway, Ireland
- Apoptosis Research Centre, University of Galway, Galway, Ireland
| | - Afshin Samali
- Apoptosis Research Centre, University of Galway, Galway, Ireland
- School of Biological and Chemical Sciences, University of Galway, Galway, Ireland
| | - Brian McDonagh
- Discipline of Physiology, School of Medicine, University of Galway, Galway, Ireland.
- Apoptosis Research Centre, University of Galway, Galway, Ireland.
| |
Collapse
|
9
|
Murata N, Nishimura K, Harada N, Kitakaze T, Yoshihara E, Inui H, Yamaji R. Insulin reduces endoplasmic reticulum stress-induced apoptosis by decreasing mitochondrial hyperpolarization and caspase-12 in INS-1 pancreatic β-cells. Physiol Rep 2024; 12:e16106. [PMID: 38884322 PMCID: PMC11181300 DOI: 10.14814/phy2.16106] [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: 05/15/2024] [Revised: 05/28/2024] [Accepted: 05/28/2024] [Indexed: 06/18/2024] Open
Abstract
Pancreatic β-cell mass is a critical determinant of insulin secretion. Severe endoplasmic reticulum (ER) stress causes β-cell apoptosis; however, the mechanisms of progression and suppression are not yet fully understood. Here, we report that the autocrine/paracrine function of insulin reduces ER stress-induced β-cell apoptosis. Insulin reduced the ER-stress inducer tunicamycin- and thapsigargin-induced cell viability loss due to apoptosis in INS-1 β-cells. Moreover, the effect of insulin was greater than that of insulin-like growth factor-1 at physiologically relevant concentrations. Insulin did not attenuate the ER stress-induced increase in unfolded protein response genes. ER stress did not induce cytochrome c release from mitochondria. Mitochondrial hyperpolarization was induced by ER stress and prevented by insulin. The protonophore/mitochondrial oxidative phosphorylation uncoupler, but not the antioxidants N-acetylcysteine and α-tocopherol, exhibited potential cytoprotection during ER stress. Both procaspase-12 and cleaved caspase-12 levels increased under ER stress. The caspase-12 inhibitor Z-ATAD-FMK decreased ER stress-induced apoptosis. Caspase-12 overexpression reduced cell viability, which was diminished in the presence of insulin. Insulin decreased caspase-12 levels at the post-translational stages. These results demonstrate that insulin protects against ER stress-induced β-cell apoptosis in this cell line. Furthermore, mitochondrial hyperpolarization and increased caspase-12 levels are involved in ER stress-induced and insulin-suppressed β-cell apoptosis.
Collapse
Affiliation(s)
- Nanako Murata
- Department of Applied Biological Chemistry, Graduate School of AgricultureOsaka Metropolitan UniversitySakaiOsakaJapan
| | - Kana Nishimura
- Division of Applied Life Sciences, Graduate School of Life and Environmental SciencesOsaka Prefecture UniversitySakaiOsakaJapan
| | - Naoki Harada
- Department of Applied Biological Chemistry, Graduate School of AgricultureOsaka Metropolitan UniversitySakaiOsakaJapan
- Division of Applied Life Sciences, Graduate School of Life and Environmental SciencesOsaka Prefecture UniversitySakaiOsakaJapan
| | - Tomoya Kitakaze
- Department of Applied Biological Chemistry, Graduate School of AgricultureOsaka Metropolitan UniversitySakaiOsakaJapan
- Division of Applied Life Sciences, Graduate School of Life and Environmental SciencesOsaka Prefecture UniversitySakaiOsakaJapan
| | - Eiji Yoshihara
- The Lundquist Institute for Biomedical Innovation at Harbor‐UCLA Medical CenterTorranceCaliforniaUSA
- David Geffen School of Medicine at University of California Los AngelesLos AngelesCaliforniaUSA
| | - Hiroshi Inui
- Department of Applied Biological Chemistry, Graduate School of AgricultureOsaka Metropolitan UniversitySakaiOsakaJapan
- Division of Applied Life Sciences, Graduate School of Life and Environmental SciencesOsaka Prefecture UniversitySakaiOsakaJapan
- Department of Health and NutritionOtemae UniversityOsakaJapan
| | - Ryoichi Yamaji
- Department of Applied Biological Chemistry, Graduate School of AgricultureOsaka Metropolitan UniversitySakaiOsakaJapan
- Division of Applied Life Sciences, Graduate School of Life and Environmental SciencesOsaka Prefecture UniversitySakaiOsakaJapan
- Center for Research and Development of BioresourcesOsaka Metropolitan UniversitySakaiOsakaJapan
| |
Collapse
|
10
|
Tao L, Dou R, Chen X, Cao Y, Dai Z, Hu Z, Ma Z, Ge X, Zhang L, Wang X. Oroxyloside protects against dextran sulfate sodium-induced colitis by inhibiting ER stress via PPARγ activation. Chin J Nat Med 2024; 22:307-317. [PMID: 38658094 DOI: 10.1016/s1875-5364(24)60615-1] [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: 06/28/2023] [Indexed: 04/26/2024]
Abstract
Ulcerative colitis (UC), a prevalent form of inflammatory bowel disease (IBD), may result from immune system dysfunction, leading to the sustained overproduction of reactive oxygen species (ROS) and subsequent cellular oxidative stress damage. Recent studies have identified both peroxisome proliferator-activated receptor-γ (PPARγ) and endoplasmic reticulum (ER) stress as critical targets for the treatment of IBD. Oroxyloside (C22H20O11), derived from the root of Scutellariabaicalensis Georgi, has traditionally been used in treating inflammatory diseases. In this study, we investigated the molecular mechanisms by which oroxyloside mitigates dextran sulfate sodium (DSS)-induced colitis. We examined the effects of oroxyloside on ROS-mediated ER stress in colitis, including the protein expressions of GRP78, p-PERK, p-eIF2α, ATF4, and CHOP, which are associated with ER stress. The beneficial impact of oroxyloside was reversed by the PPARγ antagonist GW9662 (1 mg·kg-1, i.v.) in vivo. Furthermore, oroxyloside decreased pro-inflammatory cytokines and ROS production in both bone marrow-derived macrophages (BMDM) and the mouse macrophage cell line RAW 264.7. However, PPARγ siRNA transfection blocked the anti-inflammatory effect of oroxyloside and even abolished ROS generation and ER stress activation inhibited by oroxyloside in vitro. In conclusion, our study demonstrates that oroxyloside ameliorates DSS-induced colitis by inhibiting ER stress via PPARγ activation, suggesting that oroxyloside might be a promising effective agent for IBD.
Collapse
Affiliation(s)
- Lei Tao
- Nanjing Institute for Food and Drug Control, Nanjing 211198, China.
| | - Renjie Dou
- State Key Laboratory of Natural Medicines, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Xueming Chen
- State Key Laboratory of Natural Medicines, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Yu Cao
- Nanjing Institute for Food and Drug Control, Nanjing 211198, China
| | - Zhen Dai
- Nanjing Institute for Food and Drug Control, Nanjing 211198, China
| | - Ziyan Hu
- Nanjing Institute for Food and Drug Control, Nanjing 211198, China
| | - Zhi Ma
- Nanjing Institute for Food and Drug Control, Nanjing 211198, China
| | - Xiaoming Ge
- Nanjing Institute for Food and Drug Control, Nanjing 211198, China
| | - Ling Zhang
- Nanjing Institute for Food and Drug Control, Nanjing 211198, China
| | - Xiaoping Wang
- State Key Laboratory of Natural Medicines, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China.
| |
Collapse
|
11
|
Wang KY, Wu SM, Yao ZJ, Zhu YX, Han X. Insufficient TRPM5 Mediates Lipotoxicity-induced Pancreatic β-cell Dysfunction. Curr Med Sci 2024; 44:346-354. [PMID: 38517672 DOI: 10.1007/s11596-023-2795-5] [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: 11/15/2022] [Accepted: 08/28/2023] [Indexed: 03/24/2024]
Abstract
OBJECTIVE While the reduction of transient receptor potential channel subfamily M member 5 (TRPM5) has been reported in islet cells from type 2 diabetic (T2D) mouse models, its role in lipotoxicity-induced pancreatic β-cell dysfunction remains unclear. This study aims to study its role. METHODS Pancreas slices were prepared from mice subjected to a high-fat-diet (HFD) at different time points, and TRPM5 expression in the pancreatic β cells was examined using immunofluorescence staining. Glucose-stimulated insulin secretion (GSIS) defects caused by lipotoxicity were mimicked by saturated fatty acid palmitate (Palm). Primary mouse islets and mouse insulinoma MIN6 cells were treated with Palm, and the TRPM5 expression was detected using qRT-PCR and Western blotting. Palm-induced GSIS defects were measured following siRNA-based Trpm5 knockdown. The detrimental effects of Palm on primary mouse islets were also assessed after overexpressing Trpm5 via an adenovirus-derived Trpm5 (Ad-Trpm5). RESULTS HFD feeding decreased the mRNA levels and protein expression of TRPM5 in mouse pancreatic islets. Palm reduced TRPM5 protein expression in a time- and dose-dependent manner in MIN6 cells. Palm also inhibited TRPM5 expression in primary mouse islets. Knockdown of Trpm5 inhibited insulin secretion upon high glucose stimulation but had little effect on insulin biosynthesis. Overexpression of Trpm5 reversed Palm-induced GSIS defects and the production of functional maturation molecules unique to β cells. CONCLUSION Our findings suggest that lipotoxicity inhibits TRPM5 expression in pancreatic β cells both in vivo and in vitro and, in turn, drives β-cell dysfunction.
Collapse
Affiliation(s)
- Kai-Yuan Wang
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, 211166, China
| | - Shi-Mei Wu
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, 211166, China
| | - Zheng-Jian Yao
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, 211166, China
| | - Yun-Xia Zhu
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, 211166, China.
| | - Xiao Han
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, 211166, China.
| |
Collapse
|
12
|
Chen P, Sharma A, Weiher H, Schmidt-Wolf IGH. Biological mechanisms and clinical significance of endoplasmic reticulum oxidoreductase 1 alpha (ERO1α) in human cancer. J Exp Clin Cancer Res 2024; 43:71. [PMID: 38454454 PMCID: PMC10921667 DOI: 10.1186/s13046-024-02990-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 02/21/2024] [Indexed: 03/09/2024] Open
Abstract
A firm link between endoplasmic reticulum (ER) stress and tumors has been wildly reported. Endoplasmic reticulum oxidoreductase 1 alpha (ERO1α), an ER-resident thiol oxidoreductase, is confirmed to be highly upregulated in various cancer types and associated with a significantly worse prognosis. Of importance, under ER stress, the functional interplay of ERO1α/PDI axis plays a pivotal role to orchestrate proper protein folding and other key processes. Multiple lines of evidence propose ERO1α as an attractive potential target for cancer treatment. However, the unavailability of specific inhibitor for ERO1α, its molecular inter-relatedness with closely related paralog ERO1β and the tightly regulated processes with other members of flavoenzyme family of enzymes, raises several concerns about its clinical translation. Herein, we have provided a detailed description of ERO1α in human cancers and its vulnerability towards the aforementioned concerns. Besides, we have discussed a few key considerations that may improve our understanding about ERO1α in tumors.
Collapse
Affiliation(s)
- Peng Chen
- Department of Integrated Oncology, Center for Integrated Oncology (CIO), University Hospital Bonn, 3127, Bonn, Germany
| | - Amit Sharma
- Department of Integrated Oncology, Center for Integrated Oncology (CIO), University Hospital Bonn, 3127, Bonn, Germany
- Department of Neurosurgery, University Hospital Bonn, 53127, Bonn, Germany
| | - Hans Weiher
- Department of Applied Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, 53359, Rheinbach, Germany
| | - Ingo G H Schmidt-Wolf
- Department of Integrated Oncology, Center for Integrated Oncology (CIO), University Hospital Bonn, 3127, Bonn, Germany.
| |
Collapse
|
13
|
Liang X, Ren H, Han F, Liang R, Zhao J, Liu H. The new direction of drug development: Degradation of undruggable targets through targeting chimera technology. Med Res Rev 2024; 44:632-685. [PMID: 37983964 DOI: 10.1002/med.21992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 06/13/2023] [Accepted: 10/29/2023] [Indexed: 11/22/2023]
Abstract
Imbalances in protein and noncoding RNA levels in vivo lead to the occurrence of many diseases. In addition to the use of small molecule inhibitors and agonists to restore these imbalances, recently emerged targeted degradation technologies provide a new direction for disease treatment. Targeted degradation technology directly degrades target proteins or RNA by utilizing the inherent degradation pathways, thereby eliminating the functions of pathogenic proteins (or RNA) to treat diseases. Compared with traditional therapies, targeted degradation technology which avoids the principle of traditional inhibitor occupation drive, has higher efficiency and selectivity, and widely expands the range of drug targets. It is one of the most promising and hottest areas for future drug development. Herein, we systematically introduced the in vivo degradation systems applied to degrader design: ubiquitin-proteasome system, lysosomal degradation system, and RNA degradation system. We summarized the development progress, structural characteristics, and limitations of novel chimeric design technologies based on different degradation systems. In addition, due to the lack of clear ligand-binding pockets, about 80% of disease-associated proteins cannot be effectively intervened with through traditional therapies. We deeply elucidated how to use targeted degradation technology to discover and design molecules for representative undruggable targets including transcription factors, small GTPases, and phosphatases. Overall, this review provides a comprehensive and systematic overview of targeted degradation technology-related research advances and a new guidance for the chimeric design of undruggable targets.
Collapse
Affiliation(s)
- Xuewu Liang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Hairu Ren
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China
| | - Fengyang Han
- School of Pharmacy, Fudan University, Shanghai, China
| | - Renwen Liang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Jiayan Zhao
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China
| | - Hong Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China
| |
Collapse
|
14
|
Cai Z, Du S, Zhao N, Huang N, Yang K, Qi L. Periodontitis promotes the progression of diabetes mellitus by enhancing autophagy. Heliyon 2024; 10:e24366. [PMID: 38288023 PMCID: PMC10823111 DOI: 10.1016/j.heliyon.2024.e24366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 01/04/2024] [Accepted: 01/08/2024] [Indexed: 01/31/2024] Open
Abstract
Objective This study aims to identify the periodontitis factor that activates excessive autophagy in pancreatic β cells, resulting in organic lesions of pancreatic islet tissues and diminished insulin secretion, thereby accelerating the progression of diabetes mellitus (DM). Methods Sprague-Dawley (SD) rats were induced with periodontitis (PD), type 2 diabetes mellitus (T2DM), or the combination of T2DM and PD (DP) through a high-sugar/high-fat diet and ligation of the tooth neck with silk thread. Alveolar bone resorption was assessed using Micro-CT, blood glucose levels were measured with a blood glucose meter, pancreatic tissue pathology was examined through HE staining, and the expression of autophagy-related proteins Beclin1 and LC3II/LC3I was analyzed using Western blotting. Results Micro-CT results revealed more pronounced alveolar bone resorption and root bifurcation exposure in the PD and DP groups compared to the control group, with the DP group exhibiting the most severe condition. HE staining demonstrated the formation of periodontal pockets, severe alveolar bone destruction, and abnormal pancreatic islet tissue morphology in the PD and DP groups. The serum levels of IL-6, TNF-α, and IL-1β increased sequentially in the control, DM, PD, and DP groups (P < 0.05). Relative expressions of GCK and GLUT-2 mRNA decreased in the PD group compared to the control group (P > 0.05), while the mRNA expressions in the DP and DM groups increased (P < 0.05), with the DP group exhibiting higher levels than the DM group (P < 0.05). Western blot results indicated increased expression levels of autophagy proteins Beclin1 and LC3II/LC3I in the DM and DP groups compared to the control group (P < 0.05), with the DP group exhibiting higher levels than the DM group (P < 0.05). Conclusion The findings demonstrate that periodontal inflammatory factors may promote the enhancement of pancreatic cell autophagy in diabetic rats.
Collapse
Affiliation(s)
- Zhiguo Cai
- Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
- Department of Periodontology, Stomatological Hospital Zunyi, Zunyi Medical University, Zunyi, Guizhou, China
- Honghuagang District Stomatological Hospital, Zunyi, Guizhou, China
| | - Shasha Du
- Department of Periodontology, Stomatological Hospital Zunyi, Zunyi Medical University, Zunyi, Guizhou, China
| | - Na Zhao
- Department of Periodontology, Stomatological Hospital Zunyi, Zunyi Medical University, Zunyi, Guizhou, China
| | - Nanqu Huang
- National Drug Clinical Trial Institution, Third Affiliated Hospital of Zunyi Medical University (The First People's Hospital of Zunyi), Zunyi, Guizhou, China
| | - Kun Yang
- Department of Periodontology, Stomatological Hospital Zunyi, Zunyi Medical University, Zunyi, Guizhou, China
| | - Liu Qi
- Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| |
Collapse
|
15
|
Kipp M. How to Use the Cuprizone Model to Study De- and Remyelination. Int J Mol Sci 2024; 25:1445. [PMID: 38338724 PMCID: PMC10855335 DOI: 10.3390/ijms25031445] [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: 01/11/2024] [Revised: 01/19/2024] [Accepted: 01/22/2024] [Indexed: 02/12/2024] Open
Abstract
Multiple sclerosis (MS) is an autoimmune and inflammatory disorder affecting the central nervous system whose cause is still largely unknown. Oligodendrocyte degeneration results in demyelination of axons, which can eventually be repaired by a mechanism called remyelination. Prevention of demyelination and the pharmacological support of remyelination are two promising strategies to ameliorate disease progression in MS patients. The cuprizone model is commonly employed to investigate oligodendrocyte degeneration mechanisms or to explore remyelination pathways. During the last decades, several different protocols have been applied, and all have their pros and cons. This article intends to offer guidance for conducting pre-clinical trials using the cuprizone model in mice, focusing on discovering new treatment approaches to prevent oligodendrocyte degeneration or enhance remyelination.
Collapse
Affiliation(s)
- Markus Kipp
- Rostock University Medical Center, Institute of Anatomy, 18057 Rostock, Germany
| |
Collapse
|
16
|
Liu K, Zhao C, Adajar RC, DeZwaan-McCabe D, Rutkowski DT. A beneficial adaptive role for CHOP in driving cell fate selection during ER stress. EMBO Rep 2024; 25:228-253. [PMID: 38177915 PMCID: PMC10897205 DOI: 10.1038/s44319-023-00026-0] [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: 03/27/2023] [Revised: 11/21/2023] [Accepted: 11/23/2023] [Indexed: 01/06/2024] Open
Abstract
Cellular stresses elicit signaling cascades that are capable of either mitigating the inciting dysfunction or initiating cell death. During endoplasmic reticulum (ER) stress, the transcription factor CHOP is widely recognized to promote cell death. However, it is not clear whether CHOP also has a beneficial role during adaptation. Here, we combine a new, versatile, genetically modified Chop allele with single cell analysis and with stresses of physiological intensity, to rigorously examine the contribution of CHOP to cell fate. Paradoxically, we find that CHOP promotes death in some cells, but proliferation-and hence recovery-in others. Strikingly, this function of CHOP confers to cells a stress-specific competitive growth advantage. The dynamics of CHOP expression and UPR activation at the single cell level suggest that CHOP maximizes UPR activation, which in turn favors stress resolution, subsequent UPR deactivation, and proliferation. Taken together, these findings suggest that CHOP's function can be better described as a "stress test" that drives cells into either of two mutually exclusive fates-adaptation or death-during stresses of physiological intensity.
Collapse
Affiliation(s)
- Kaihua Liu
- Interdisciplinary Graduate Program in Human Toxicology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Chaoxian Zhao
- Shanghai Cancer Institute, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Reed C Adajar
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Diane DeZwaan-McCabe
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - D Thomas Rutkowski
- Interdisciplinary Graduate Program in Human Toxicology, University of Iowa Carver College of Medicine, Iowa City, IA, USA.
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, IA, USA.
- Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA, USA.
| |
Collapse
|
17
|
Chen Z, Herzog RW, Kaufman RJ. Cellular stress and coagulation factor production: when more is not necessarily better. J Thromb Haemost 2023; 21:3329-3341. [PMID: 37839613 PMCID: PMC10760459 DOI: 10.1016/j.jtha.2023.10.005] [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: 10/10/2023] [Accepted: 10/11/2023] [Indexed: 10/17/2023]
Abstract
Remarkably, it has been 40 years since the isolation of the 2 genes involved in hemophilia A (HA) and hemophilia B (HB), encoding clotting factor (F) VIII (FVIII) and FIX, respectively. Over the years, these advances led to the development of purified recombinant protein factors that are free of contaminating viruses from human pooled plasma for hemophilia treatments, reducing the morbidity and mortality previously associated with human plasma-derived clotting factors. These discoveries also paved the way for modified factors that have increased plasma half-lives. Importantly, more recent advances have led to the development and Food and Drug Administration approval of a hepatocyte-targeted, adeno-associated viral vector-mediated gene transfer approach for HA and HB. However, major concerns regarding the durability and safety of HA gene therapy remain to be resolved. Compared with FIX, FVIII is a much larger protein that is prone to misfolding and aggregation in the endoplasmic reticulum and is poorly secreted by the mammalian cells. Due to the constraint of the packaging capacity of adeno-associated viral vector, B-domain deleted FVIII rather than the full-length protein is used for HA gene therapy. Like full-length FVIII, B-domain deleted FVIII misfolds and is inefficiently secreted. Its expression in hepatocytes activates the cellular unfolded protein response, which is deleterious for hepatocyte function and survival and has the potential to drive hepatocellular carcinoma. This review is focused on our current understanding of factors limiting FVIII secretion and the potential pathophysiological consequences upon expression in hepatocytes.
Collapse
Affiliation(s)
- Zhouji Chen
- Degenerative Diseases Program, Center for Genetic Diseases and Aging Research, SBP Medical Discovery Institute, California, USA
| | - Roland W Herzog
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University, Indianapolis, Indiana, USA
| | - Randal J Kaufman
- Degenerative Diseases Program, Center for Genetic Diseases and Aging Research, SBP Medical Discovery Institute, California, USA.
| |
Collapse
|
18
|
Sivaraman K, Pino P, Raussin G, Anchisi S, Metayer C, Dagany N, Held J, Wrenger S, Welte T, Wurm MJ, Wurm FM, Olejnicka B, Janciauskiene S. Human PBMCs Form Lipid Droplets in Response to Spike Proteins. Microorganisms 2023; 11:2683. [PMID: 38004695 PMCID: PMC10672762 DOI: 10.3390/microorganisms11112683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/22/2023] [Accepted: 10/30/2023] [Indexed: 11/26/2023] Open
Abstract
Intracellular lipid droplets (LDs) can accumulate in response to inflammation, metabolic stresses, and other physiological/pathological processes. Herein, we investigated whether spike proteins of SARS-CoV-2 induce LDs in human peripheral blood mononuclear cells (PBMCs) and in pulmonary microvascular endothelial cells (HPMECs). PBMCs or HPMECs were incubated alone or with endotoxin-free recombinant variants of trimeric spike glycoproteins (Alpha, Beta, Delta, and Omicron, 12 µg/mL). Afterward, cells were stained with Oil Red O for LDs, cytokine release was determined through ELISA, and the gene expression was analyzed through real-time PCR using TaqMan assays. Our data show that spikes induce LDs in PBMCs but not in HPMECs. In line with this, in PBMCs, spike proteins lower the expression of genes involving lipid metabolism and LD formation, such as SREBF1, HMGCS1, LDLR, and CD36. On the other hand, PBMCs exposed to spikes for 6 or 18 h did not increase in IL-1β, IL-6, IL-8, MCP-1, and TNFα release or expression as compared to non-treated controls. Thus, spike-induced LD formation in PBMCs seems to not be related to cell inflammatory activation. Further detailed studies are warranted to investigate in which specific immune cells spikes induce LDs, and what are the pathophysiological mechanisms and consequences of this induction in vivo.
Collapse
Affiliation(s)
- Kokilavani Sivaraman
- Department of Respiratory Medicine, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, 30625 Hannover, Germany
| | - Paco Pino
- ExcellGene SA, 1970 Monthey, Switzerland
| | | | | | | | | | - Julia Held
- Department of Respiratory Medicine, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, 30625 Hannover, Germany
| | - Sabine Wrenger
- Department of Respiratory Medicine, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, 30625 Hannover, Germany
| | - Tobias Welte
- Department of Respiratory Medicine, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, 30625 Hannover, Germany
| | | | - Florian M. Wurm
- ExcellGene SA, 1970 Monthey, Switzerland
- Faculty of Life Sciences, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Beata Olejnicka
- Department of Respiratory Medicine, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, 30625 Hannover, Germany
| | - Sabina Janciauskiene
- Department of Respiratory Medicine, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, 30625 Hannover, Germany
| |
Collapse
|
19
|
Lee JH, Ryu H, Lee H, Yu HR, Gao Y, Lee KM, Kim YJ, Lee J. Endoplasmic reticulum stress in pancreatic β cells induces incretin desensitization and β-cell dysfunction via ATF4-mediated PDE4D expression. Am J Physiol Endocrinol Metab 2023; 325:E448-E465. [PMID: 37729023 DOI: 10.1152/ajpendo.00156.2023] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 08/18/2023] [Accepted: 09/05/2023] [Indexed: 09/22/2023]
Abstract
Pancreatic β-cell dysfunction and eventual loss are key steps in the progression of type 2 diabetes (T2D). Endoplasmic reticulum (ER) stress responses, especially those mediated by the protein kinase RNA-like ER kinase and activating transcription factor 4 (PERK-ATF4) pathway, have been implicated in promoting these β-cell pathologies. However, the exact molecular events surrounding the role of the PERK-ATF4 pathway in β-cell dysfunction remain unknown. Here, we report our discovery that ATF4 promotes the expression of PDE4D, which disrupts β-cell function via a downregulation of cAMP signaling. We found that β-cell-specific transgenic expression of ATF4 led to early β-cell dysfunction and loss, a phenotype that resembles accelerated T2D. Expression of ATF4, rather than C/EBP homologous protein (CHOP), promoted PDE4D expression, reduced cAMP signaling, and attenuated responses to incretins and elevated glucose. Furthermore, we found that β-cells of leptin receptor-deficient diabetic (db/db) mice had elevated nuclear localization of ATF4 and PDE4D expression, accompanied by impaired β-cell function. Accordingly, pharmacological inhibition of the ATF4 pathway attenuated PDE4D expression in the islets and promoted incretin-simulated glucose tolerance and insulin secretion in db/db mice. Finally, we found that inhibiting PDE4 activity with selective pharmacological inhibitors improved β-cell function in both db/db mice and β-cell-specific ATF4 transgenic mice. In summary, our results indicate that ER stress causes β-cell failure via ATF4-mediated PDE4D production, suggesting the ATF4-PDE4D pathway could be a therapeutic target for protecting β-cell function during the progression of T2D.NEW & NOTEWORTHY Endoplasmic reticulum stress has been implied to cause multiple β-cell pathologies during the progression of type 2 diabetes (T2D). However, the precise molecular events underlying this remain unknown. Here, we discovered that elevated ATF4 activity, which was seen in T2D β cells, attenuated β-cell proliferation and impaired insulin secretion via PDE4D-mediated downregulation of cAMP signaling. Additionally, we demonstrated that pharmacological inhibition of the ATF4 pathway or PDE4D activity alleviated β-cell dysfunction, suggesting its therapeutic usefulness against T2D.
Collapse
Affiliation(s)
- Ji-Hye Lee
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Republic of Korea
- New Biology Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Republic of Korea
| | - Hanguk Ryu
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Republic of Korea
| | - Hyejin Lee
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Republic of Korea
| | - Hye Ram Yu
- Well Aging Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Republic of Korea
| | - Yurong Gao
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Republic of Korea
| | - Kyeong-Min Lee
- Division of Biotechnology, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Republic of Korea
| | - Young-Joon Kim
- Department of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Jaemin Lee
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Republic of Korea
- New Biology Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Republic of Korea
- Well Aging Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Republic of Korea
| |
Collapse
|
20
|
Liu K, Zhao C, Adajar RC, DeZwaan-McCabe D, Rutkowski DT. A beneficial adaptive role for CHOP in driving cell fate selection during ER stress. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.19.533325. [PMID: 36993175 PMCID: PMC10055232 DOI: 10.1101/2023.03.19.533325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Cellular stresses elicit signaling cascades that are capable of either mitigating the inciting dysfunction or initiating cell death. During endoplasmic reticulum (ER) stress, the transcription factor CHOP is widely recognized to promote cell death. However, it is not clear whether CHOP also has a beneficial role during adaptation. Here, we have combined a new, versatile, genetically modified Chop allele with single cell analysis and with stresses of physiological intensity, to rigorously examine the contribution of CHOP to cell fate. Paradoxically, we found that CHOP promoted death in some cells, but proliferation-and hence recovery-in others. Strikingly, this function of CHOP conferred to cells a stress-specific competitive growth advantage. The dynamics of CHOP expression and UPR activation at the single cell level suggested that CHOP maximizes UPR activation, which in turn favors stress resolution, subsequent UPR deactivation, and proliferation. Taken together, these findings suggest that CHOP's function can be better described as a "stress test" that drives cells into either of two mutually exclusive fates-adaptation or death-during stresses of physiological intensity.
Collapse
Affiliation(s)
- Kaihua Liu
- Program in Human Toxicology, University of Iowa Carver College of Medicine, Iowa City, IA
| | - Chaoxian Zhao
- Shanghai Cancer Institute, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Reed C. Adajar
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, IA
| | - Diane DeZwaan-McCabe
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, IA
| | - D. Thomas Rutkowski
- Program in Human Toxicology, University of Iowa Carver College of Medicine, Iowa City, IA
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, IA
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA
| |
Collapse
|
21
|
Zhang Y, Zhao T, Hu L, Xue J. Integrative Analysis of Core Genes and Biological Process Involved in Polycystic Ovary Syndrome. Reprod Sci 2023; 30:3055-3070. [PMID: 37171773 DOI: 10.1007/s43032-023-01259-z] [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: 07/28/2022] [Accepted: 04/29/2023] [Indexed: 05/13/2023]
Abstract
Polycystic ovary syndrome (PCOS) is a common gynecological endocrine disordered disease, affecting the function of the ovaries in women of reproductive age. However, there are limited curative therapies for PCOS due to lack of reliable candidates. Hence, this study aimed to identify hub pathogenic genes and potential therapeutic targets for PCOS using bioinformatics tools. We obtained the expression profiles of 29 PCOS samples and 24 normal samples from three Gene Expression Omnibus (GEO) datasets. Then, the differentially expressed genes (DEGs) were screened, which were subjected to functional enrichment analyses. Moreover, we found 30 ferroptosis-related genes out of the 89 DEGs. Among the top 10 significant ferroptosis-related DEGs, 8 genes showed good predictive performance. We constructed interaction network of top three ferroptosis-related DEGs (SLC38A1, ACO1, DDIT3). Finally, real-time PCR was performed to test the relative expression of these genes. In conclusions, we have identified ferroptosis-related DEGs as core genes and potential therapeutic targets of PCOS based on comprehensive bioinformatics analysis. The findings are conducive to understanding of the pathogenesis of PCOS and paving the way towards curative therapies.
Collapse
Affiliation(s)
- Yuanyuan Zhang
- Department of Obstetrics and Gynecology, Yan'an University Affiliated Hospital, No. 43 North Street, Baota District, Yan'an, 716000, Shaanxi, People's Republic of China
| | - Tianyi Zhao
- Department of Obstetrics and Gynecology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, People's Republic of China
| | - Lishuang Hu
- Department of Obstetrics and Gynecology, Yan'an University Affiliated Hospital, No. 43 North Street, Baota District, Yan'an, 716000, Shaanxi, People's Republic of China
| | - Juan Xue
- Department of Obstetrics and Gynecology, Yan'an University Affiliated Hospital, No. 43 North Street, Baota District, Yan'an, 716000, Shaanxi, People's Republic of China.
| |
Collapse
|
22
|
Chen F, Yang D, Ru Y, Bai Y, Pei X, Sun J, Cao S, Wang W, Gao A. Tanshinone IIA attenuates valvular interstitial cells' calcification induced by oxidized low density lipoprotein via reducing endoplasmic reticulum stress. Open Med (Wars) 2023; 18:20230797. [PMID: 37771422 PMCID: PMC10523103 DOI: 10.1515/med-2023-0797] [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: 02/16/2023] [Revised: 07/31/2023] [Accepted: 08/28/2023] [Indexed: 09/30/2023] Open
Abstract
Recent studies revealed that endoplasmic reticulum (ER) stress played an emerging role of in valve calcification. Tanshinone IIA (TanIIA) has been a research hotspot in cardiovascular diseases. Previously we found that sodium TanIIA dampened the pathological phenotype transition of valvular interstitial cells (VICs) by affecting ER stress published in Chinese Journal. Here, we test the hypothesis that TanIIA attenuates the pro-osteogenic effects of oxidized low-density lipoprotein (oxLDL) in VICs by reducing induction of ER stress. Patients' aortic valve (AV) was collected, and porcine VICs were cultured for in vitro model. ER stress markers were tested in human leaflets by immunostaining. Immunoblotting were used to test the osteoblastic factors such as Runx2, osteocalcin, and ER stress markers GRP78, CHOP, XBP1, etc. Alkakine phosphate (ALP) activity assay were used to test the activity of ALP kinase. Pro-inflammatory gene expression was detected by polymerase chain reaction. As a result, ER stress markers were elevated in patients' calcified AVs. OxLDL induced osteogenesis and inflammation via promoting ER stress. TanIIA attenuated oxLDL induced ER stress. TanIIA also inhibited theosteoblastic factors and inflammatory cytokine expressions in VICs. In conclusion, our data provide evidence that TanIIA exerts anti-inflammation and anti-osteogenic effects in VICs by attenuating ER stress, and ER stress acts as an important regulator in oxLDL induced VICs' phenotype transition.
Collapse
Affiliation(s)
- Fang Chen
- Department of Pathophysiology, Henan University of Traditional Chinese Medicine, Zhengzhou450008, China
| | - Dongqiang Yang
- Department of Infectious Diseases, Henan Provincial Peoples’ Hospital, Zhengzhou450003, China
| | - Yuhua Ru
- Department of Medical Academy, Soochow University, Soochow215021, China
| | - Yu Bai
- Department of Pathophysiology, Henan University of Traditional Chinese Medicine, Zhengzhou450008, China
| | - Xueliang Pei
- Department of Cardiovascular Surgery, Henan Provincial Peoples’ Hospital, Zhengzhou450003, China
| | - Jie Sun
- Department of Pathophysiology, Henan University of Traditional Chinese Medicine, Zhengzhou450008, China
| | - Shan Cao
- Department of Pathophysiology, Henan University of Traditional Chinese Medicine, Zhengzhou450008, China
| | - Weiguang Wang
- Department of Pathophysiology, Henan University of Traditional Chinese Medicine, Zhengzhou450008, China
| | - Aishe Gao
- Department of Pathophysiology, Henan University of Traditional Chinese Medicine, Zhengzhou450008, China
| |
Collapse
|
23
|
Fang F, Liu P, Huang H, Feng X, Li L, Sun Y, Kaufman RJ, Hu Y. RGC-specific ATF4 and/or CHOP deletion rescues glaucomatous neurodegeneration and visual function. MOLECULAR THERAPY. NUCLEIC ACIDS 2023; 33:286-295. [PMID: 37547290 PMCID: PMC10400881 DOI: 10.1016/j.omtn.2023.07.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 07/11/2023] [Indexed: 08/08/2023]
Abstract
Endoplasmic reticulum (ER) stress has been linked with various acute and chronic neurodegenerative diseases. We previously found that optic nerve (ON) injury and diseases induce neuronal ER stress in retinal ganglion cells (RGCs). We further demonstrated that germline deletion of CHOP preserves the structure and function of both RGC somata and axons in mouse glaucoma models. Here we report that RGC-specific deletion of CHOP and/or its upstream regulator ATF4 synergistically promotes RGC and ON survival and preserves visual function in mouse ON crush and silicone oil-induced ocular hypertension (SOHU) glaucoma models. Consistently, topical application of the ATF4/CHOP chemical inhibitor ISRIB or RGC-specific CRISPR-mediated knockdown of the ATF4 downstream effector Gadd45a also delivers significant neuroprotection in the SOHU glaucoma model. These studies suggest that blocking the neuronal intrinsic ATF4/CHOP axis of ER stress is a promising neuroprotection strategy for neurodegeneration.
Collapse
Affiliation(s)
- Fang Fang
- Department of Ophthalmology, Stanford University School of Medicine, Palo Alto, CA 94304, USA
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Pingting Liu
- Department of Ophthalmology, Stanford University School of Medicine, Palo Alto, CA 94304, USA
| | - Haoliang Huang
- Department of Ophthalmology, Stanford University School of Medicine, Palo Alto, CA 94304, USA
| | - Xue Feng
- Department of Ophthalmology, Stanford University School of Medicine, Palo Alto, CA 94304, USA
| | - Liang Li
- Department of Ophthalmology, Stanford University School of Medicine, Palo Alto, CA 94304, USA
| | - Yang Sun
- Department of Ophthalmology, Stanford University School of Medicine, Palo Alto, CA 94304, USA
| | - Randal J. Kaufman
- Degenerative Diseases Program, Center for Genetic Disorders and Aging Research, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Yang Hu
- Department of Ophthalmology, Stanford University School of Medicine, Palo Alto, CA 94304, USA
| |
Collapse
|
24
|
Anwar SD, Foster C, Ashraf A. Lipid Disorders and Metabolic-Associated Fatty Liver Disease. Endocrinol Metab Clin North Am 2023; 52:445-457. [PMID: 37495336 DOI: 10.1016/j.ecl.2023.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
Dyslipidemia has been linked metabolic-associated fatty liver disease (MAFLD). Several genes and transcription factors involved in lipid metabolism can increase susceptibility to MAFLD. Multiple parallel 'hits' have been proposed for developing hepatic steatosis, NASH, and MAFLD, including insulin resistance and subsequent free fatty acid excess, de novo lipogenesis, and excessive hepatic triglyceride and cholesterol deposition in the liver. This lead to defective beta-oxidation in the mitochondria and VLDL export and increased inflammation. Given the significant cardiovascular risk, dyslipidemia associated with MAFLD should be managed by lifestyle changes and lipid-lowering agents such as statins, fenofibrate, and omega-3 fatty acids, with judicious use of insulin-sensitizing agents, and adequate control of dysglycemia.
Collapse
Affiliation(s)
- Shima Dowla Anwar
- Department of Pediatrics, Boston Children Hospital, Harvard Medical School, Boston, MA, USA
| | - Christy Foster
- University of Alabama at Birmingham, 1601, 4th Avenue South, CPP M 30, Birmingham, AL 35233, USA
| | - Ambika Ashraf
- University of Alabama at Birmingham, 1601, 4th Avenue South, CPP M 30, Birmingham, AL 35233, USA.
| |
Collapse
|
25
|
Kobiita A, Silva PN, Schmid MW, Stoffel M. FoxM1 coordinates cell division, protein synthesis, and mitochondrial activity in a subset of β cells during acute metabolic stress. Cell Rep 2023; 42:112986. [PMID: 37590136 DOI: 10.1016/j.celrep.2023.112986] [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: 11/28/2022] [Revised: 06/06/2023] [Accepted: 07/31/2023] [Indexed: 08/19/2023] Open
Abstract
Pancreatic β cells display functional and transcriptional heterogeneity in health and disease. The sequence of events leading to β cell heterogeneity during metabolic stress is poorly understood. Here, we characterize β cell responses to early metabolic stress in vivo by employing RNA sequencing (RNA-seq), assay for transposase-accessible chromatin with sequencing (ATAC-seq), single-cell RNA-seq (scRNA-seq), chromatin immunoprecipitation sequencing (ChIP-seq), and real-time imaging to decipher temporal events of chromatin remodeling and gene expression regulating the unfolded protein response (UPR), protein synthesis, mitochondrial function, and cell-cycle progression. We demonstrate that a subpopulation of β cells with active UPR, decreased protein synthesis, and insulin secretary capacities is more susceptible to proliferation after insulin depletion. Alleviation of endoplasmic reticulum (ER) stress precedes the progression of the cell cycle and mitosis and ensures appropriate insulin synthesis. Furthermore, metabolic stress rapidly activates key transcription factors including FoxM1, which impacts on proliferative and quiescent β cells by regulating protein synthesis, ER stress, and mitochondrial activity via direct repression of mitochondrial-encoded genes.
Collapse
Affiliation(s)
- Ahmad Kobiita
- Institute of Molecular Health Sciences, ETH Zürich, Otto-Stern-Weg 7, 8093 Zürich, Switzerland
| | - Pamuditha N Silva
- Institute of Molecular Health Sciences, ETH Zürich, Otto-Stern-Weg 7, 8093 Zürich, Switzerland
| | - Marc W Schmid
- MWSchmid GmbH, Hauptstrasse 34, 8750 Glarus, Switzerland
| | - Markus Stoffel
- Institute of Molecular Health Sciences, ETH Zürich, Otto-Stern-Weg 7, 8093 Zürich, Switzerland; Medical Faculty, Universitäts-Spital Zürich, Rämistrasse 100, 8091 Zürich, Switzerland.
| |
Collapse
|
26
|
Patel S, Pangarkar A, Mahajan S, Majumdar A. Therapeutic potential of endoplasmic reticulum stress inhibitors in the treatment of diabetic peripheral neuropathy. Metab Brain Dis 2023; 38:1841-1856. [PMID: 37289403 DOI: 10.1007/s11011-023-01239-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 05/19/2023] [Indexed: 06/09/2023]
Abstract
Endoplasmic stress response, the unfolded protein response (UPR), is a homeostatic signaling pathway comprising transmembrane sensors that get activated upon alterations in ER luminal environment. Studies suggest a relation between activated UPR pathways and several disease states such as Parkinson, Alzheimer, inflammatory bowel disease, tumor growth, and metabolic syndrome. Diabetic peripheral neuropathy (DPN), a common microvascular complication of diabetes-related chronic hyperglycemia, causes chronic pain, loss of sensation, foot ulcers, amputations, allodynia, hyperalgesia, paresthesia, and spontaneous pain. Factors like disrupted calcium signaling, dyslipidemia, hyperglycemia, inflammation, insulin signaling, and oxidative stress disturb the UPR sensor levels manifesting as DPN. We discuss new effective therapeutic alternatives for DPN that can be developed by targeting UPR pathways like synthetic ER stress inhibitors like 4-PhenylButyric acid (4-PBA), Sephin 1, Salubrinal and natural ER stress inhibitors like Tauroursodeoxycholic acid (TUDCA), Cordycepin, Proanthocyanidins, Crocin, Purple Rice extract and cyanidin and Caffeic Acid Phenethyl Ester (CAPE).
Collapse
Affiliation(s)
- Shivangi Patel
- Department of Pharmacology, Bombay College of Pharmacy, Kalina, Mumbai, 400098, India
| | - Arnika Pangarkar
- Department of Pharmacology, Bombay College of Pharmacy, Kalina, Mumbai, 400098, India
| | - Sakshi Mahajan
- Department of Pharmacology, Bombay College of Pharmacy, Kalina, Mumbai, 400098, India
| | - Anuradha Majumdar
- Department of Pharmacology, Bombay College of Pharmacy, Kalina, Mumbai, 400098, India.
| |
Collapse
|
27
|
Buonfiglio F, Böhm EW, Pfeiffer N, Gericke A. Oxidative Stress: A Suitable Therapeutic Target for Optic Nerve Diseases? Antioxidants (Basel) 2023; 12:1465. [PMID: 37508003 PMCID: PMC10376185 DOI: 10.3390/antiox12071465] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Optic nerve disorders encompass a wide spectrum of conditions characterized by the loss of retinal ganglion cells (RGCs) and subsequent degeneration of the optic nerve. The etiology of these disorders can vary significantly, but emerging research highlights the crucial role of oxidative stress, an imbalance in the redox status characterized by an excess of reactive oxygen species (ROS), in driving cell death through apoptosis, autophagy, and inflammation. This review provides an overview of ROS-related processes underlying four extensively studied optic nerve diseases: glaucoma, Leber's hereditary optic neuropathy (LHON), anterior ischemic optic neuropathy (AION), and optic neuritis (ON). Furthermore, we present preclinical findings on antioxidants, with the objective of evaluating the potential therapeutic benefits of targeting oxidative stress in the treatment of optic neuropathies.
Collapse
Affiliation(s)
- Francesco Buonfiglio
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (E.W.B.); (N.P.)
| | | | | | - Adrian Gericke
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (E.W.B.); (N.P.)
| |
Collapse
|
28
|
Park JE, Lee J, Ok S, Byun S, Chang EJ, Yoon SE, Kim YJ, Kang MJ. Wg/Wnt1 and Erasp link ER stress to proapoptotic signaling in an autosomal dominant retinitis pigmentosa model. Exp Mol Med 2023:10.1038/s12276-023-01044-7. [PMID: 37464094 PMCID: PMC10394004 DOI: 10.1038/s12276-023-01044-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/11/2023] [Accepted: 04/17/2023] [Indexed: 07/20/2023] Open
Abstract
The endoplasmic reticulum (ER) is a subcellular organelle essential for cellular homeostasis. Perturbation of ER functions due to various conditions can induce apoptosis. Chronic ER stress has been implicated in a wide range of diseases, including autosomal dominant retinitis pigmentosa (ADRP), which is characterized by age-dependent retinal degeneration caused by mutant rhodopsin alleles. However, the signaling pathways that mediate apoptosis in response to ER stress remain poorly understood. In this study, we performed an unbiased in vivo RNAi screen with a Drosophila ADRP model and found that Wg/Wnt1 mediated apoptosis. Subsequent transcriptome analysis revealed that ER stress-associated serine protease (Erasp), which has been predicted to show serine-type endopeptidase activity, was a downstream target of Wg/Wnt1 during ER stress. Furthermore, knocking down Erasp via RNAi suppressed apoptosis induced by mutant rhodopsin-1 (Rh-1P37H) toxicity, alleviating retinal degeneration in the Drosophila ADRP model. In contrast, overexpression of Erasp resulted in enhanced caspase activity in Drosophila S2 cells treated with apoptotic inducers and the stabilization of the initiator caspase Dronc (Death regulator Nedd2-like caspase) by stimulating DIAP1 (Drosophila inhibitor of apoptosis protein 1) degradation. These findings helped identify a novel cell death signaling pathway involved in retinal degeneration in an autosomal dominant retinitis pigmentosa model.
Collapse
Affiliation(s)
- Jung-Eun Park
- Department of Pharmacology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
| | - Jiyoun Lee
- School of Biopharmaceutical and Medical Sciences, Sungshin University, Seoul, 01133, Republic of Korea
| | - Soonhyuck Ok
- Department of Pharmacology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
| | - Seunghee Byun
- Department of Pharmacology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
| | - Eun-Ju Chang
- Department of Biochemistry and Molecular Biology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
- Biomedical Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Sung-Eun Yoon
- Korea Drosophila Resource Center, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Young-Joon Kim
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Min-Ji Kang
- Department of Pharmacology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea.
- Biomedical Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea.
| |
Collapse
|
29
|
Yeh YT, Sona C, Yan X, Li Y, Pathak A, McDermott MI, Xie Z, Liu L, Arunagiri A, Wang Y, Cazenave-Gassiot A, Ghosh A, von Meyenn F, Kumarasamy S, Najjar SM, Jia S, Wenk MR, Traynor-Kaplan A, Arvan P, Barg S, Bankaitis VA, Poy MN. Restoration of PITPNA in Type 2 diabetic human islets reverses pancreatic beta-cell dysfunction. Nat Commun 2023; 14:4250. [PMID: 37460527 PMCID: PMC10352338 DOI: 10.1038/s41467-023-39978-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 07/06/2023] [Indexed: 07/20/2023] Open
Abstract
Defects in insulin processing and granule maturation are linked to pancreatic beta-cell failure during type 2 diabetes (T2D). Phosphatidylinositol transfer protein alpha (PITPNA) stimulates activity of phosphatidylinositol (PtdIns) 4-OH kinase to produce sufficient PtdIns-4-phosphate (PtdIns-4-P) in the trans-Golgi network to promote insulin granule maturation. PITPNA in beta-cells of T2D human subjects is markedly reduced suggesting its depletion accompanies beta-cell dysfunction. Conditional deletion of Pitpna in the beta-cells of Ins-Cre, Pitpnaflox/flox mice leads to hyperglycemia resulting from decreasing glucose-stimulated insulin secretion (GSIS) and reducing pancreatic beta-cell mass. Furthermore, PITPNA silencing in human islets confirms its role in PtdIns-4-P synthesis and leads to impaired insulin granule maturation and docking, GSIS, and proinsulin processing with evidence of ER stress. Restoration of PITPNA in islets of T2D human subjects reverses these beta-cell defects and identify PITPNA as a critical target linked to beta-cell failure in T2D.
Collapse
Affiliation(s)
- Yu-Te Yeh
- Johns Hopkins University, All Children's Hospital, St. Petersburg, FL, 33701, USA
- Johns Hopkins University, Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, Baltimore, MD, 21287, USA
| | - Chandan Sona
- Johns Hopkins University, All Children's Hospital, St. Petersburg, FL, 33701, USA
- Johns Hopkins University, Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, Baltimore, MD, 21287, USA
| | - Xin Yan
- Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology, University Medical Center Rostock, Rostock, 18147, Germany
- Max Delbrück Center for Molecular Medicine, Robert Rössle Strasse 10, Berlin, 13125, Germany
| | - Yunxiao Li
- Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology, University Medical Center Rostock, Rostock, 18147, Germany
| | - Adrija Pathak
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX, 77843, USA
| | - Mark I McDermott
- Department of Cell Biology & Genetics, Texas A&M Health Science Center, College Station, TX, 77843, USA
| | - Zhigang Xie
- Department of Cell Biology & Genetics, Texas A&M Health Science Center, College Station, TX, 77843, USA
| | - Liangwen Liu
- Medical Cell Biology, Uppsala University, 75123, Uppsala, Sweden
| | - Anoop Arunagiri
- Division of Metabolism, Endocrinology & Diabetes, University of Michigan Medical School, Ann Arbor, MI, 48105, USA
| | - Yuting Wang
- Max Delbrück Center for Molecular Medicine, Robert Rössle Strasse 10, Berlin, 13125, Germany
| | - Amaury Cazenave-Gassiot
- Singapore Lipidomics Incubator, Life Sciences Institute, National University of Singapore, 117456, Singapore, Singapore
- Department of Biochemistry and Precision Medicine TRP, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore, Singapore
| | - Adhideb Ghosh
- Laboratory of Nutrition and Metabolic Epigenetics, Department of Health Sciences and Technology, ETH Zurich, Schwerzenbach, 8603, Switzerland
| | - Ferdinand von Meyenn
- Laboratory of Nutrition and Metabolic Epigenetics, Department of Health Sciences and Technology, ETH Zurich, Schwerzenbach, 8603, Switzerland
| | - Sivarajan Kumarasamy
- Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, 45701, USA
- Diabetes Institute, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, 45701, USA
| | - Sonia M Najjar
- Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, 45701, USA
- Diabetes Institute, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH, 45701, USA
| | - Shiqi Jia
- The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Markus R Wenk
- Singapore Lipidomics Incubator, Life Sciences Institute, National University of Singapore, 117456, Singapore, Singapore
- Department of Biochemistry and Precision Medicine TRP, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore, Singapore
| | - Alexis Traynor-Kaplan
- Department of Medicine, University of Washington School of Medicine, Seattle, WA, 98195, USA
- ATK Analytics, Innovation and Discovery, LLC, North Bend, WA, 98045, USA
| | - Peter Arvan
- Division of Metabolism, Endocrinology & Diabetes, University of Michigan Medical School, Ann Arbor, MI, 48105, USA
| | - Sebastian Barg
- Medical Cell Biology, Uppsala University, 75123, Uppsala, Sweden
| | - Vytas A Bankaitis
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX, 77843, USA
- Department of Cell Biology & Genetics, Texas A&M Health Science Center, College Station, TX, 77843, USA
- Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA
| | - Matthew N Poy
- Johns Hopkins University, All Children's Hospital, St. Petersburg, FL, 33701, USA.
- Johns Hopkins University, Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, Baltimore, MD, 21287, USA.
- Max Delbrück Center for Molecular Medicine, Robert Rössle Strasse 10, Berlin, 13125, Germany.
| |
Collapse
|
30
|
Wang W, Liang M, Wang L, Bei W, Guo J. 15-Hydroxyprostaglandin dehydrogenase inhibitor SW033291 ameliorates hepatic abnormal lipid metabolism, ER stress, and inflammation through PGE 2/EP4 in T2DM mice. Bioorg Chem 2023; 137:106646. [PMID: 37285764 DOI: 10.1016/j.bioorg.2023.106646] [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: 12/15/2022] [Revised: 04/13/2023] [Accepted: 05/29/2023] [Indexed: 06/09/2023]
Abstract
Type 2 diabetes mellitus (T2DM) is a rapidly growing epidemic that results in increased morbidity, mortality, and soaring medical costs. Prostaglandin E2 (PGE2), a vital lipid mediator, has been reported to protect against hepatic steatosis, inflammation, endoplasmic reticulum (ER) stress, and insulin resistance, indicating its potential therapeutic role in T2DM. PGE2 can be degraded by 15-hydroxyprostaglandin dehydrogenase (15-PGDH). SW033291, an inhibitor of 15-PGDH, has been reported to increase PGE2 levels, however, the effect of SW033291 in T2DM remains to be explored. This study aims to evaluate whether SW033291 protects against T2DM and explore its potential mechanisms. A T2DM mouse model was established through high-fat diet/streptozotocin injection, while palmitic acid-treated mouse primary hepatocytes were used as insulin-resistant cell models. SW033291 treatment reduced body weight, fat weight, fasting blood glucose, and improved impaired glucose tolerance and insulin resistance in T2DM mice. More importantly, SW033291 alleviated steatosis, inflammation, and ER stress in the liver of T2DM mice. Mechanistically, SW033291 decreased the expressions of SREBP-1c and ACC1, and increased the expression of PPARα in T2DM mice. Additionally, SW033291 inhibited NF-κB and eIF2α/CHOP signaling in T2DM mice. Further, we showed that the protective effects of SW033291 on the above-mentioned pathophysiological processes could be hindered by inhibition of the PGE2 receptor EP4. Overall, our study reveals a novel role of SW033291 in alleviating T2DM and suggests its potential as a new therapeutic strategy for T2DM.
Collapse
Affiliation(s)
- Weixuan Wang
- Traditional Chinese Medicine Research Institute, Guangdong Pharmaceutical University, Guangzhou, Guangdong Province, China; Guangdong Provincial Research Center of Integration of Traditional Chinese Medicine and Western Medicine in Metabolic Diseases, Guangzhou, Guangdong Province, China; Key Laboratory of Glucolipid Metabolic Diseases, Ministry of Education, Guangzhou, Guangdong Province, China; Guangdong Provincial TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou, Guangdong Province, China
| | - Mingjie Liang
- Traditional Chinese Medicine Research Institute, Guangdong Pharmaceutical University, Guangzhou, Guangdong Province, China; Guangdong Provincial Research Center of Integration of Traditional Chinese Medicine and Western Medicine in Metabolic Diseases, Guangzhou, Guangdong Province, China; Key Laboratory of Glucolipid Metabolic Diseases, Ministry of Education, Guangzhou, Guangdong Province, China; Guangdong Provincial TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou, Guangdong Province, China
| | - Lexun Wang
- Traditional Chinese Medicine Research Institute, Guangdong Pharmaceutical University, Guangzhou, Guangdong Province, China; Guangdong Provincial Research Center of Integration of Traditional Chinese Medicine and Western Medicine in Metabolic Diseases, Guangzhou, Guangdong Province, China; Key Laboratory of Glucolipid Metabolic Diseases, Ministry of Education, Guangzhou, Guangdong Province, China; Guangdong Provincial TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou, Guangdong Province, China
| | - Weijian Bei
- Traditional Chinese Medicine Research Institute, Guangdong Pharmaceutical University, Guangzhou, Guangdong Province, China; Guangdong Provincial Research Center of Integration of Traditional Chinese Medicine and Western Medicine in Metabolic Diseases, Guangzhou, Guangdong Province, China; Key Laboratory of Glucolipid Metabolic Diseases, Ministry of Education, Guangzhou, Guangdong Province, China; Guangdong Provincial TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou, Guangdong Province, China
| | - Jiao Guo
- Traditional Chinese Medicine Research Institute, Guangdong Pharmaceutical University, Guangzhou, Guangdong Province, China; Guangdong Provincial Research Center of Integration of Traditional Chinese Medicine and Western Medicine in Metabolic Diseases, Guangzhou, Guangdong Province, China; Key Laboratory of Glucolipid Metabolic Diseases, Ministry of Education, Guangzhou, Guangdong Province, China; Guangdong Provincial TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou, Guangdong Province, China.
| |
Collapse
|
31
|
Ong G, Logue SE. Unfolding the Interactions between Endoplasmic Reticulum Stress and Oxidative Stress. Antioxidants (Basel) 2023; 12:antiox12050981. [PMID: 37237847 DOI: 10.3390/antiox12050981] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/16/2023] [Accepted: 04/19/2023] [Indexed: 05/28/2023] Open
Abstract
Oxidative stress is caused by an imbalance in cellular redox state due to the accumulation of reactive oxygen species (ROS). While homeostatic levels of ROS are important for cell physiology and signaling, excess ROS can induce a variety of negative effects ranging from damage to biological macromolecules to cell death. Additionally, oxidative stress can disrupt the function of redox-sensitive organelles including the mitochondria and endoplasmic reticulum (ER). In the case of the ER, the accumulation of misfolded proteins can arise due to oxidative stress, leading to the onset of ER stress. To combat ER stress, cells initiate a highly conserved stress response called the unfolded protein response (UPR). While UPR signaling, within the context of resolving ER stress, is well characterised, how UPR mediators respond to and influence oxidative stress is less defined. In this review, we evaluate the interplay between oxidative stress, ER stress and UPR signaling networks. Specifically, we assess how UPR signaling mediators can influence antioxidant responses.
Collapse
Affiliation(s)
- Gideon Ong
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Susan E Logue
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- CancerCare Manitoba Research Institute, Winnipeg, MB R3E 0V9, Canada
- The Children's Hospital Research Institute of Manitoba (CHRIM), Winnipeg, MB R3E 3P4, Canada
| |
Collapse
|
32
|
Mann JP, Lenz D, Stamataki Z, Kelly D. Common mechanisms in pediatric acute liver failure. Trends Mol Med 2023; 29:228-240. [PMID: 36496278 DOI: 10.1016/j.molmed.2022.11.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/06/2022] [Accepted: 11/14/2022] [Indexed: 12/12/2022]
Abstract
Acute liver failure (ALF) is a rare but potentially fatal disease in children. The etiology is multifactorial, including infection, autoimmune, and genetic disorders, as well as indeterminate hepatitis, which has a higher requirement for liver transplantation. Activation of the innate and adaptive immune systems leads to hepatocyte-specific injury which is mitigated by T regulatory cell activation. Recovery of the native liver depends on activation of apoptotic and regenerative pathways, including the integrated stress response (ISR; e.g., PERK), p53, and HNF4α. Loss-of-function mutations in these pathways cause recurrent ALF in response to non-hepatotropic viruses. Deeper understanding of these mechanisms will lead to improved diagnosis, management, and outcomes for pediatric ALF.
Collapse
Affiliation(s)
- Jake P Mann
- Liver Unit, Birmingham Women's and Children's Hospital, and University of Birmingham, Birmingham, UK
| | - Dominic Lenz
- Division of Neuropediatrics and Pediatric Metabolic Medicine, Center for Pediatric and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - Zania Stamataki
- Centre for Liver and Gastrointestinal Research, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
| | - Deirdre Kelly
- Liver Unit, Birmingham Women's and Children's Hospital, and University of Birmingham, Birmingham, UK; Centre for Liver and Gastrointestinal Research, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK.
| |
Collapse
|
33
|
Influence of the Mediterranean Diet on Healthy Aging. Int J Mol Sci 2023; 24:ijms24054491. [PMID: 36901921 PMCID: PMC10003249 DOI: 10.3390/ijms24054491] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/18/2023] [Accepted: 02/21/2023] [Indexed: 03/02/2023] Open
Abstract
The life expectancy of the global population has increased. Aging is a natural physiological process that poses major challenges in an increasingly long-lived and frail population. Several molecular mechanisms are involved in aging. Likewise, the gut microbiota, which is influenced by environmental factors such as diet, plays a crucial role in the modulation of these mechanisms. The Mediterranean diet, as well as the components present in it, offer some proof of this. Achieving healthy aging should be focused on the promotion of healthy lifestyle habits that reduce the development of pathologies that are associated with aging, in order to increase the quality of life of the aging population. In this review we analyze the influence of the Mediterranean diet on the molecular pathways and the microbiota associated with more favorable aging patterns, as well as its possible role as an anti-aging treatment.
Collapse
|
34
|
Wong A, Pritchard S, Moore M, Akhaphong B, Avula N, Beetch M, Fujitani Y, Alejandro EU. Overexpression of Pdx1, reduction of p53, or deletion of CHOP attenuates pancreas hypoplasia in mice with pancreas-specific O-GlcNAc transferase deletion. J Biol Chem 2023; 299:102878. [PMID: 36623733 PMCID: PMC9932656 DOI: 10.1016/j.jbc.2023.102878] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/16/2022] [Accepted: 12/17/2022] [Indexed: 01/09/2023] Open
Abstract
Deletion of O-GlcNAc transferase (Ogt) in pancreatic epithelial progenitor cells results in pancreatic hypoplasia at birth, partly due to increased apoptosis during embryonic development. Constitutive loss of Ogt in β-cells results in increased ER stress and apoptosis, and in the Ogt-deficient pancreas, transcriptomic data previously revealed both tumor suppressor protein p53 and pancreatic duodenal homeobox 1 (Pdx1), key cell survival proteins in the developing pancreas, as upstream regulators of differentially expressed genes. However, the specific roles of these genes in pancreatic hypoplasia are unclear. In this study, we explored the independent roles of p53, ER stress protein CHOP, and Pdx1 in pancreas development and their use in the functional rescue of pancreatic hypoplasia in the context of Ogt loss. Using in vivo genetic manipulation and morphometric analysis, we show that Ogt plays a key regulatory role in pancreas development. Heterozygous, but not homozygous, loss of pancreatic p53 afforded a partial rescue of β-cell, α-cell, and exocrine cell masses, while whole body loss of CHOP afforded a partial rescue in pancreas weight and a full rescue in exocrine cell mass. However, neither was sufficient to fully mitigate pancreatic hypoplasia at birth in the Ogt-deficient pancreas. Furthermore, overexpression of Pdx1 in the pancreatic epithelium resulted in partial rescues in pancreas weight and β-cell mass in the Ogt loss background. These findings highlight the requirement of Ogt in pancreas development by targeting multiple proteins such as transcription factor Pdx1 and p53 in the developing pancreas.
Collapse
Affiliation(s)
- Alicia Wong
- Department of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA; Department of Genetics, Cell Biology & Development, University of Minnesota, Minneapolis, Minnesota, USA
| | - Samantha Pritchard
- Department of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Mackenzie Moore
- Department of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Brian Akhaphong
- Department of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Nandini Avula
- Department of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Megan Beetch
- Department of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Yoshio Fujitani
- Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Gunma, Japan
| | - Emilyn U Alejandro
- Department of Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA.
| |
Collapse
|
35
|
Deng L, Mo MQ, Zhong J, Li Z, Li G, Liang Y. Iron overload induces islet β cell ferroptosis by activating ASK1/P-P38/CHOP signaling pathway. PeerJ 2023; 11:e15206. [PMID: 37090106 PMCID: PMC10120586 DOI: 10.7717/peerj.15206] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 03/19/2023] [Indexed: 04/25/2023] Open
Abstract
Background Recent studies have shown that the accumulation of free iron and lipid peroxides will trigger a new form of cell death-ferroptosis. This form of cell death is associated with a variety of diseases, including type 2 diabetes. We hypothesize that iron overload may play a role in driving glucose metabolism abnormalities by inducing endoplasmic reticulum stress that mediates ferroptosis in islet β cells. In this study, we tested this conjecture from in vivo and in vitro experiments. Methods We established a mouse iron overload model by intraperitoneal injection of iron dextrose (50 mg/kg) and an iron overload cell model by treating MIN6 cells with ferric ammonium citrate (640 μmol/L, 48 h) in vitro. The iron deposition in pancreatic tissue was observed by Prussian blue staining, and the pathological changes in pancreatic tissues by HE staining and the protein expression level by pancreatic immunohistochemistry. In the cellular experiments, we detected the cell viability by CCK8 and observed the cellular ultrastructure by transmission electron microscopy. We also used MDA and ROS kits to detect the level of oxidative stress and lipid peroxidation in cells. Western blotting was performed to detect the expression levels of target proteins. Results Iron overload induces MIN6 cell dysfunction, leading to increased fasting blood glucose, impaired glucose tolerance, and significantly decreased insulin sensitivity in mice. This process may be related to the ferroptosis of islet β cells and the activation of ASK1/P-P38/CHOP signaling pathway.
Collapse
Affiliation(s)
- Ling Deng
- Department of Endocrinology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Man-Qiu Mo
- Department of Geriatric Endocrinology and Metabolism, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jinling Zhong
- Department of Endocrinology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Zhengming Li
- Department of Endocrinology, People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Guoqiao Li
- Department of Endocrinology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yuzhen Liang
- Department of Endocrinology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| |
Collapse
|
36
|
The unfolded protein response (UPR) pathway: the unsung hero in breast cancer management. Apoptosis 2022; 28:263-276. [PMID: 36536258 DOI: 10.1007/s10495-022-01803-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/08/2022] [Indexed: 12/24/2022]
Abstract
Tumor cells always have the need to produce an increased amount of proteins in the cells. This elevated amount of proteins increases the pressure on the organelles of the cell such as the endoplasmic reticulum and compels it to increase its protein folding efficiency. However, it is by a matter of fact, that the amount of proteins synthesized outweighs the protein folding capacity of the ER which in turn switches on the UPR pathway by activating the three major molecular sensors and other signaling cascades, which helps in cell survival instead of instant death. However, if this pathway is active for a prolonged period of time the tumor cells heads toward apoptosis. Again, interestingly this is not the same as in case of non- tumorogenic cells. This exhibit a straight natural pathway for tumor cells-specific destruction which has a great implication in today's world where hormone therapies and chemo-therapies are non-effective for various types of breast cancer, a major type being Triple Negative Breast Cancer. Thus a detailed elucidation of the molecular involvement of the UPR pathway in breast cancer may open new avenues for management and attract novel chemotherapeutic targets providing better hopes to patients worldwide.
Collapse
|
37
|
Uhlemeyer C, Müller N, Rieck M, Kuboth J, Schlegel C, Grieß K, Dorweiler TF, Heiduschka S, Eckel J, Roden M, Lammert E, Stoffel M, Belgardt BF. Selective ablation of P53 in pancreatic beta cells fails to ameliorate glucose metabolism in genetic, dietary and pharmacological models of diabetes mellitus. Mol Metab 2022; 67:101650. [PMID: 36470401 PMCID: PMC9791454 DOI: 10.1016/j.molmet.2022.101650] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE Beta cell dysfunction and death are critical steps in the development of both type 1 and type 2 diabetes (T1D and T2D), but the underlying mechanisms are incompletely understood. Activation of the essential tumor suppressor and transcription factor P53 (also known as TP53 and Trp53 in mice) was linked to beta cell death in vitro and has been reported in several diabetes mouse models and beta cells of humans with T2D. In this article, we set out to determine the beta cell specific role of P53 in beta cell dysfunction, cell death and development of diabetes in vivo. METHODS We generated beta cell specific P53 knockout (P53BKO) mice and used complementary genetic, dietary and pharmacological models of glucose intolerance, beta cell dysfunction and diabetes development to evaluate the functional role of P53 selectively in beta cells. We further analyzed the effect of P53 ablation on beta cell survival in isolated pancreatic islets exposed to diabetogenic stress inducers ex vivo by flow cytometry. RESULTS Beta cell specific ablation of P53/Trp53 failed to ameliorate glucose tolerance, insulin secretion or to increase beta cell numbers in genetic, dietary and pharmacological models of diabetes. Additionally, loss of P53 in beta cells did not protect against streptozotocin (STZ) induced hyperglycemia and beta cell death, although STZ-induced activation of classical pro-apoptotic P53 target genes was significantly reduced in P53BKO mice. In contrast, Olaparib mediated PARP1 inhibition protected against acute ex vivo STZ-induced beta cell death and islet destruction. CONCLUSIONS Our study reveals that ablation of P53 specifically in beta cells is unexpectedly unable to attenuate beta cell failure and death in vivo and ex vivo. While during development and progression of diabetes, P53 and P53-regulated pathways are activated, our study suggests that P53 signaling is not essential for loss of beta cells or beta cell dysfunction. P53 in other cell types and organs may predominantly regulate systemic glucose homeostasis.
Collapse
Affiliation(s)
- Celina Uhlemeyer
- Institute for Vascular and Islet Cell Biology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich-Heine University, Düsseldorf, Germany; German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany.
| | - Nadine Müller
- Institute for Vascular and Islet Cell Biology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich-Heine University, Düsseldorf, Germany,German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
| | - Michael Rieck
- Institute for Vascular and Islet Cell Biology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich-Heine University, Düsseldorf, Germany,German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
| | - Jennifer Kuboth
- Institute for Vascular and Islet Cell Biology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich-Heine University, Düsseldorf, Germany,German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
| | - Caroline Schlegel
- Institute for Vascular and Islet Cell Biology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich-Heine University, Düsseldorf, Germany,German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
| | - Kerstin Grieß
- Institute for Vascular and Islet Cell Biology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich-Heine University, Düsseldorf, Germany,German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
| | - Tim Florian Dorweiler
- Institute for Vascular and Islet Cell Biology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich-Heine University, Düsseldorf, Germany,German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
| | - Sonja Heiduschka
- Institute for Vascular and Islet Cell Biology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich-Heine University, Düsseldorf, Germany,German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
| | - Jürgen Eckel
- German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany,Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes, Düsseldorf, Germany
| | - Michael Roden
- German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany,Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes, Düsseldorf, Germany,Department of Endocrinology and Diabetology, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University, Düsseldorf, Germany
| | - Eckhard Lammert
- Institute for Vascular and Islet Cell Biology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich-Heine University, Düsseldorf, Germany,German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany,Institute of Metabolic Physiology, Heinrich Heine University, Düsseldorf, Germany
| | - Markus Stoffel
- Institute of Molecular Health Sciences (IMHS), ETH Zürich, Zürich, Switzerland; Competence Center Personalized Medicine, ETH Zürich, Zürich, Switzerland; Medical Faculty, University of Zürich, Zürich, Switzerland
| | - Bengt-Frederik Belgardt
- Institute for Vascular and Islet Cell Biology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich-Heine University, Düsseldorf, Germany; German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany.
| |
Collapse
|
38
|
Loss-of-rescue of Ryr1 I4895T-related pathology by the genetic inhibition of the ER stress response mediator CHOP. Sci Rep 2022; 12:20632. [PMID: 36450915 PMCID: PMC9712496 DOI: 10.1038/s41598-022-25198-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 11/25/2022] [Indexed: 12/07/2022] Open
Abstract
RYR1 is the gene encoding the ryanodine receptor 1, a calcium release channel of the endo/sarcoplasmic reticulum. I4898T in RYR1 is one of the most common mutations that give rise to central core disease (CCD), with a variable phenotype ranging from mild to severe myopathy to lethal early-onset core-rod myopathy. Mice with the corresponding I4895T mutation in Ryr1 present mild myopathy when the mutation is heterozygous while I4895T homozygous is perinatal-lethal. Here we show that skeletal muscles of I4895T homozygous mice at birth present signs of stress of the endoplasmic reticulum (ER stress) and of the related unfolded protein response (UPR) with increased levels of the maladaptive mediators CHOP and ERO1. To gain information on the role of CHOP in the pathogenesis of RYR1I4895T-related myopathy, we generated compound Ryr1I4895T, Chop knock-out (-/-) mice. However, the genetic deletion of Chop, although it attenuates ER stress in the skeletal muscle of the newborns, does not rescue any phenotypic or functional features of Ryr1I4895T in mice: neither the perinatal-lethal phenotype nor the inability of Ryr1I4895T to respond to its agonist caffeine, but protects from ER stress-induced apoptosis. These findings suggest that genetic deletion of the ER stress response mediator CHOP is not sufficient to counteract the pathological Ryr1I4895T phenotype.
Collapse
|
39
|
Gómez-Sierra T, Jiménez-Uribe AP, Ortega-Lozano AJ, Ramírez-Magaña KJ, Pedraza-Chaverri J. Antioxidants affect endoplasmic reticulum stress-related diseases. VITAMINS AND HORMONES 2022; 121:169-196. [PMID: 36707134 DOI: 10.1016/bs.vh.2022.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
The endoplasmic reticulum (ER) is a complex multifunctional organelle that maintains cell homeostasis. Intrinsic and extrinsic factors alter ER functions, including the rate of protein folding that triggers the accumulation of misfolded proteins and alters homeostasis, thus generating stress in the ER, which activates the unfolded protein response (UPR) pathway to promote cell survival and restore their homeostasis; however, if the damage is not corrected, it could also trigger cell death. In addition, ER stress and oxidative stress are closely related because excessive production of reactive oxygen species (ROS), a well-known inducer of ER stress, promotes the accumulation of misfolded proteins; at the same time, the ER stress enhances ROS production, generating a pathological cycle. Furthermore, it has been described that the dysregulation of the UPR contributes to the progression of various diseases, so the use of compounds capable of regulating ER stress, such as antioxidants, has been used in several experimental models of diseases to alleviate the damage induced by the maladaptive signaling of the UPR, the mechanism of action of antioxidants generally is dose-dependent, and it is specific in each tissue and pathology, could decrease or enhance specific proteins of the UPR to have beneficial or detrimental effects.
Collapse
Affiliation(s)
- Tania Gómez-Sierra
- Antioxidant Biochemistry Laboratory, Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, Mexico
| | - Alexis Paulina Jiménez-Uribe
- Antioxidant Biochemistry Laboratory, Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, Mexico
| | - Ariadna Jazmín Ortega-Lozano
- Antioxidant Biochemistry Laboratory, Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, Mexico
| | - Karla Jaqueline Ramírez-Magaña
- Antioxidant Biochemistry Laboratory, Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, Mexico
| | - José Pedraza-Chaverri
- Antioxidant Biochemistry Laboratory, Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, Mexico.
| |
Collapse
|
40
|
Kulkarni A, Muralidharan C, May SC, Tersey SA, Mirmira RG. Inside the β Cell: Molecular Stress Response Pathways in Diabetes Pathogenesis. Endocrinology 2022; 164:6783239. [PMID: 36317483 PMCID: PMC9667558 DOI: 10.1210/endocr/bqac184] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Indexed: 11/05/2022]
Abstract
The pathogeneses of the 2 major forms of diabetes, type 1 and type 2, differ with respect to their major molecular insults (loss of immune tolerance and onset of tissue insulin resistance, respectively). However, evidence suggests that dysfunction and/or death of insulin-producing β-cells is common to virtually all forms of diabetes. Although the mechanisms underlying β-cell dysfunction remain incompletely characterized, recent years have witnessed major advances in our understanding of the molecular pathways that contribute to the demise of the β-cell. Cellular and environmental factors contribute to β-cell dysfunction/loss through the activation of molecular pathways that exacerbate endoplasmic reticulum stress, the integrated stress response, oxidative stress, and impaired autophagy. Whereas many of these stress responsive pathways are interconnected, their individual contributions to glucose homeostasis and β-cell health have been elucidated through the development and interrogation of animal models. In these studies, genetic models and pharmacological compounds have enabled the identification of genes and proteins specifically involved in β-cell dysfunction during diabetes pathogenesis. Here, we review the critical stress response pathways that are activated in β cells in the context of the animal models.
Collapse
Affiliation(s)
| | | | - Sarah C May
- Kovler Diabetes Center and Department of Medicine, The University of Chicago, Chicago, Illinois 60637, USA
| | - Sarah A Tersey
- Kovler Diabetes Center and Department of Medicine, The University of Chicago, Chicago, Illinois 60637, USA
| | - Raghavendra G Mirmira
- Correspondence: Raghavendra G. Mirmira, MD, PhD, Kovler Diabetes Center and Department of Medicine, The University of Chicago, 900 E 57th St, KCBD 8132, Chicago, IL 60637, USA.
| |
Collapse
|
41
|
Goode RA, Hum JM, Kalwat MA. Therapeutic Strategies Targeting Pancreatic Islet β-Cell Proliferation, Regeneration, and Replacement. Endocrinology 2022; 164:6836713. [PMID: 36412119 PMCID: PMC9923807 DOI: 10.1210/endocr/bqac193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/16/2022] [Accepted: 11/18/2022] [Indexed: 11/23/2022]
Abstract
Diabetes results from insufficient insulin production by pancreatic islet β-cells or a loss of β-cells themselves. Restoration of regulated insulin production is a predominant goal of translational diabetes research. Here, we provide a brief overview of recent advances in the fields of β-cell proliferation, regeneration, and replacement. The discovery of therapeutic targets and associated small molecules has been enabled by improved understanding of β-cell development and cell cycle regulation, as well as advanced high-throughput screening methodologies. Important findings in β-cell transdifferentiation, neogenesis, and stem cell differentiation have nucleated multiple promising therapeutic strategies. In particular, clinical trials are underway using in vitro-generated β-like cells from human pluripotent stem cells. Significant challenges remain for each of these strategies, but continued support for efforts in these research areas will be critical for the generation of distinct diabetes therapies.
Collapse
Affiliation(s)
- Roy A Goode
- Division of Biomedical Sciences, College of Osteopathic Medicine, Marian University, Indianapolis, IN, USA
| | - Julia M Hum
- Division of Biomedical Sciences, College of Osteopathic Medicine, Marian University, Indianapolis, IN, USA
| | - Michael A Kalwat
- Correspondence: Michael A. Kalwat, PhD, Lilly Diabetes Center of Excellence, Indiana Biosciences Research Institute, 1210 Waterway Blvd, Suite 2000, Indianapolis, IN 46202, USA. or
| |
Collapse
|
42
|
Hou W, Nsengimana B, Yan C, Nashan B, Han S. Involvement of endoplasmic reticulum stress in rifampicin-induced liver injury. Front Pharmacol 2022; 13:1022809. [PMCID: PMC9630567 DOI: 10.3389/fphar.2022.1022809] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 10/10/2022] [Indexed: 11/13/2022] Open
Abstract
Rifampicin is a first-line antituberculosis drug. Hepatocyte toxicity caused by rifampicin is a significant clinical problem. However, the specific mechanism by which rifampicin causes liver injury is still poorly understood. Endoplasmic reticulum (ER) stress can have both protective and proapoptotic effects on an organism, depending on the environmental state of the organism. While causing cholestasis and oxidative stress in the liver, rifampicin also activates ER stress in different ways, including bile acid accumulation and cytochrome p450 (CYP) enzyme-induced toxic drug metabolites via pregnane X receptor (PXR). The short-term stress response helps the organism resist toxicity, but when persisting, the response aggravates liver damage. Therefore, ER stress may be closely related to the “adaptive” mechanism and the apoptotic toxicity of rifampicin. This article reviews the functional characteristics of ER stress and its potentially pathogenic role in liver injury caused by rifampicin.
Collapse
Affiliation(s)
- Wanqing Hou
- Department of Hepatobiliary Surgery, Anhui Province Key Laboratory of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Bernard Nsengimana
- Department of Hepatobiliary Surgery, Anhui Province Key Laboratory of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Chuyun Yan
- Department of Hepatobiliary Surgery, Anhui Province Key Laboratory of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Bjorn Nashan
- Department of Organ Transplantation Center, The First Affiliated Hospital of University of Science and Technology of China, Hefei, China
| | - Shuxin Han
- Department of Hepatobiliary Surgery, Anhui Province Key Laboratory of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- *Correspondence: Shuxin Han,
| |
Collapse
|
43
|
Drp1 Overexpression Decreases Insulin Content in Pancreatic MIN6 Cells. Int J Mol Sci 2022; 23:ijms232012338. [PMID: 36293194 PMCID: PMC9604375 DOI: 10.3390/ijms232012338] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/03/2022] [Accepted: 10/12/2022] [Indexed: 11/05/2022] Open
Abstract
Mitochondrial dynamics and bioenergetics are central to glucose-stimulated insulin secretion by pancreatic beta cells. Previously, we demonstrated that a disturbance in glucose-invoked fission impairs insulin secretion by compromising glucose catabolism. Here, we investigated whether the overexpression of mitochondrial fission regulator Drp1 in MIN6 cells can improve or rescue insulin secretion. Although Drp1 overexpression slightly improves the triggering mechanism of insulin secretion of the Drp1-knockdown cells and has no adverse effects on mitochondrial metabolism in wildtype MIN6 cells, the constitutive presence of Drp1 unexpectedly impairs insulin content, which leads to a reduction in the absolute values of secreted insulin. Coherent with previous studies in Drp1-overexpressing muscle cells, we found that the upregulation of ER stress-related genes (BiP, Chop, and Hsp60) possibly impacts insulin production in MIN6 cells. Collectively, we confirm the important role of Drp1 for the energy-coupling of insulin secretion but unravel off-targets effects by Drp1 overexpression on insulin content that warrant caution when manipulating Drp1 in disease therapy.
Collapse
|
44
|
Shrestha S, Erikson G, Lyon J, Spigelman AF, Bautista A, Manning Fox JE, dos Santos C, Shokhirev M, Cartailler JP, Hetzer MW, MacDonald PE, Arrojo e Drigo R. Aging compromises human islet beta cell function and identity by decreasing transcription factor activity and inducing ER stress. SCIENCE ADVANCES 2022; 8:eabo3932. [PMID: 36197983 PMCID: PMC9534504 DOI: 10.1126/sciadv.abo3932] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 08/17/2022] [Indexed: 05/02/2023]
Abstract
Pancreatic islet beta cells are essential for maintaining glucose homeostasis. To understand the impact of aging on beta cells, we performed meta-analysis of single-cell RNA sequencing datasets, transcription factor (TF) regulon analysis, high-resolution confocal microscopy, and measured insulin secretion from nondiabetic donors spanning most of the human life span. This revealed the range of molecular and functional changes that occur during beta cell aging, including the transcriptional deregulation that associates with cellular immaturity and reorganization of beta cell TF networks, increased gene transcription rates, and reduced glucose-stimulated insulin release. These alterations associate with activation of endoplasmic reticulum (ER) stress and autophagy pathways. We propose that a chronic state of ER stress undermines old beta cell structure function to increase the risk of beta cell failure and type 2 diabetes onset as humans age.
Collapse
Affiliation(s)
- Shristi Shrestha
- Creative Data Solutions, Vanderbilt Center for Stem Cell Biology, Nashville, TN 37232, USA
| | - Galina Erikson
- Integrative Genomics and Bioinformatics Core, Salk Institute of Biological Studies, La Jolla, CA 92037, USA
| | - James Lyon
- Department of Pharmacology and Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta T6G2E1, Canada
| | - Aliya F. Spigelman
- Department of Pharmacology and Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta T6G2E1, Canada
| | - Austin Bautista
- Department of Pharmacology and Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta T6G2E1, Canada
| | - Jocelyn E. Manning Fox
- Department of Pharmacology and Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta T6G2E1, Canada
| | - Cristiane dos Santos
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA
| | - Maxim Shokhirev
- Integrative Genomics and Bioinformatics Core, Salk Institute of Biological Studies, La Jolla, CA 92037, USA
| | | | - Martin W. Hetzer
- Molecular and Cell Biology Laboratory, Salk Institute of Biological Studies, La Jolla, CA 92037, USA
| | - Patrick E. MacDonald
- Department of Pharmacology and Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta T6G2E1, Canada
| | - Rafael Arrojo e Drigo
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA
| |
Collapse
|
45
|
Parys JB, Van Coppenolle F. Sec61 complex/translocon: The role of an atypical ER Ca 2+-leak channel in health and disease. Front Physiol 2022; 13:991149. [PMID: 36277220 PMCID: PMC9582130 DOI: 10.3389/fphys.2022.991149] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 09/20/2022] [Indexed: 11/02/2023] Open
Abstract
The heterotrimeric Sec61 protein complex forms the functional core of the so-called translocon that forms an aqueous channel in the endoplasmic reticulum (ER). The primary role of the Sec61 complex is to allow protein import in the ER during translation. Surprisingly, a completely different function in intracellular Ca2+ homeostasis has emerged for the Sec61 complex, and the latter is now accepted as one of the major Ca2+-leak pathways of the ER. In this review, we first discuss the structure of the Sec61 complex and focus on the pharmacology and regulation of the Sec61 complex as a Ca2+-leak channel. Subsequently, we will pay particular attention to pathologies that are linked to Sec61 mutations, such as plasma cell deficiency and congenital neutropenia. Finally, we will explore the relevance of the Sec61 complex as a Ca2+-leak channel in various pathophysiological (ER stress, apoptosis, ischemia-reperfusion) and pathological (type 2 diabetes, cancer) settings.
Collapse
Affiliation(s)
- Jan B. Parys
- Laboratory for Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine & Leuven Kanker Instituut, KU Leuven, Leuven, Belgium
| | - Fabien Van Coppenolle
- CarMeN Laboratory, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, Lyon, France
- Groupement Hospitalier EST, Department of Cardiology, Hospices Civils de Lyon, Lyon, France
| |
Collapse
|
46
|
Kang Z, Chen F, Wu W, Liu R, Chen T, Xu F. UPRmt and coordinated UPRER in type 2 diabetes. Front Cell Dev Biol 2022; 10:974083. [PMID: 36187475 PMCID: PMC9523447 DOI: 10.3389/fcell.2022.974083] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
The mitochondrial unfolded protein response (UPRmt) is a molecular mechanism that maintains mitochondrial proteostasis under stress and is closely related to various metabolic diseases, such as type 2 diabetes (T2D). Similarly, the unfolded protein response of the endoplasmic reticulum (UPRER) is responsible for maintaining proteomic stability in the endoplasmic reticulum (ER). Since the mitochondria and endoplasmic reticulum are the primary centers of energy metabolism and protein synthesis in cells, respectively, a synergistic mechanism must exist between UPRmt and UPRER to cooperatively resist stresses such as hyperglycemia in T2D. Increasing evidence suggests that the protein kinase RNA (PKR)-like endoplasmic reticulum kinase (PERK) signaling pathway is likely an important node for coordinating UPRmt and UPRER. The PERK pathway is activated in both UPRmt and UPRER, and its downstream molecules perform important functions. In this review, we discuss the mechanisms of UPRmt, UPRER and their crosstalk in T2D.
Collapse
Affiliation(s)
- Zhanfang Kang
- Department of Basic Medical Research, Qingyuan People’s Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, China
| | - Feng Chen
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Wanhui Wu
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Rui Liu
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Tianda Chen
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Fang Xu
- Department of Basic Medical Research, Qingyuan People’s Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, China
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
- *Correspondence: Fang Xu,
| |
Collapse
|
47
|
Huang YN, Lin WDE, Su PH, Bau DAT, Tsai FJ, Huang CC, Wang CH. CD3 +CD56 + T Lymphocytes Are Associated With ER Stress and Inflammasome Activation in Type 1 Diabetes. In Vivo 2022; 36:2083-2091. [PMID: 36099092 PMCID: PMC9463882 DOI: 10.21873/invivo.12934] [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: 06/14/2022] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM The T cell's flexibility of the immune system to be regulated affects the onset of type 1 diabetes (T1D). However, the mechanisms of endoplasmic reticulum (ER) stress and inflammasome activation in the circulating CD3+CD56+ T cells of patients with T1D remain unclear. This study evaluated the role of CD3+CD56+ T cells in T1D and their correlations with ER stress, inflammasome activation and disease characteristics. MATERIALS AND METHODS The frequency of circulating CD3+CD56+ T cells was determined using flow cytometry in healthy individuals and patients with T1D. Calnexin, NLR family pyrin domain containing 3 (NLRP3), ASC, caspase-1 (Casp1), cleaved caspase-3 (C-Casp3), and annexin V (AnnV) expression and propidium iodide staining in CD3+/CD56+ T cells were analyzed using flow cytometry. RESULTS The frequency of CD3+CD56+ T cells was reduced in patients with T1D relative to that in healthy individuals. In addition, high calnexin, NLRP3, ASC and Casp1 expression in CD3+CD56+ T cells was negatively correlated with the percentage of CD3+CD56+ T cells in patients with T1D. CONCLUSION ER stress, inflammasome activation, and a lower peripheral frequency of circulating CD3+CD56+ T cells might indicate disease progression and necessitate clinical T1D immunological self-tolerance monitoring.
Collapse
Affiliation(s)
- Yu-Nan Huang
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, R.O.C
- Division of Genetics and Metabolism, Children's Hospital of China Medical University, Taichung, Taiwan, R.O.C
| | - Wei-DE Lin
- Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
- School of Post Baccalaureate Chinese Medicine, China Medical University, Taichung, Taiwan, R.O.C
| | - Pen-Hua Su
- Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan, R.O.C
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan, R.O.C
| | - DA-Tian Bau
- Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan, R.O.C
| | - Fuu-Jen Tsai
- Division of Genetics and Metabolism, Children's Hospital of China Medical University, Taichung, Taiwan, R.O.C
- Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Chieh-Chen Huang
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan, R.O.C.;
| | - Chung-Hsing Wang
- Division of Genetics and Metabolism, Children's Hospital of China Medical University, Taichung, Taiwan, R.O.C.;
- School of Medicine, China Medical University, Taichung, Taiwan, R.O.C
| |
Collapse
|
48
|
Kukharsky MS, Everett MW, Lytkina OA, Raspopova MA, Kovrazhkina EA, Ovchinnikov RK, Antohin AI, Moskovtsev AA. Protein Homeostasis Dysregulation in Pathogenesis of Neurodegenerative Diseases. Mol Biol 2022. [DOI: 10.1134/s0026893322060115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
49
|
Zhou Y, Zhou X, Dong W, Zhang Y, Du J, Zhou X, Fang W, Wang X, Song H. Porcine circovirus type 2 induces CHOP-ERO1α-ROS-mediated apoptosis in PK-15 cells. Vet Microbiol 2022; 273:109548. [PMID: 36037618 DOI: 10.1016/j.vetmic.2022.109548] [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: 07/02/2022] [Revised: 08/16/2022] [Accepted: 08/20/2022] [Indexed: 10/15/2022]
Abstract
Porcine circovirus type 2 (PCV2) infection induces endoplasmic reticulum (ER) stress and oxidative stress. These cellular responses could be connected with apoptosis. However, the mechanisms that link ER stress and oxidative stress in PCV2-induced apoptosis are poorly characterized. Here, we demonstrate that PCV2 infection increased expression of proapoptotic protein C/EBP homologous protein (CHOP) and ER oxidoreductase 1 alpha (ERO1α). Inhibition of CHOP by RNA silencing or inhibition of ERO1α by short hairpin RNA or EN460 repressed PCV2-induced reactive oxygen species (ROS) generation, cytosolic calcium level, and apoptotic rate in PK-15 cells. Overexpression of ERO1α enhanced PCV2-induced oxidative stress, caspase-3 cleavage, and apoptosis rate. Treatment of PCV2-infected cells with ROS scavenger N-acetyl-L-cysteine downregulated PCV2-induced ROS production, cytosolic calcium level, and apoptosis rate, but intriguingly decreased expression of CHOP and ERO1α. Thus, we propose that PCV2 induces apoptosis through ER Stress via CHOP-ERO1α-ROS signaling in host cells.
Collapse
Affiliation(s)
- Yingshan Zhou
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Research Center for Animal Health Diagnostics & Advanced Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, 666 Wusu Street, Lin'an District, Hangzhou, Zhejiang Province 311300, China.
| | - Xiaojie Zhou
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Research Center for Animal Health Diagnostics & Advanced Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, 666 Wusu Street, Lin'an District, Hangzhou, Zhejiang Province 311300, China.
| | - Wanyu Dong
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Research Center for Animal Health Diagnostics & Advanced Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, 666 Wusu Street, Lin'an District, Hangzhou, Zhejiang Province 311300, China.
| | - Yuxin Zhang
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Research Center for Animal Health Diagnostics & Advanced Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, 666 Wusu Street, Lin'an District, Hangzhou, Zhejiang Province 311300, China.
| | - Jing Du
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Research Center for Animal Health Diagnostics & Advanced Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, 666 Wusu Street, Lin'an District, Hangzhou, Zhejiang Province 311300, China.
| | - Xingdong Zhou
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Research Center for Animal Health Diagnostics & Advanced Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, 666 Wusu Street, Lin'an District, Hangzhou, Zhejiang Province 311300, China.
| | - Weihuan Fang
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Research Center for Animal Health Diagnostics & Advanced Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, 666 Wusu Street, Lin'an District, Hangzhou, Zhejiang Province 311300, China.
| | - Xiaodu Wang
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Research Center for Animal Health Diagnostics & Advanced Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, 666 Wusu Street, Lin'an District, Hangzhou, Zhejiang Province 311300, China.
| | - Houhui Song
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Research Center for Animal Health Diagnostics & Advanced Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, 666 Wusu Street, Lin'an District, Hangzhou, Zhejiang Province 311300, China.
| |
Collapse
|
50
|
Xu X, Poulsen KL, Wu L, Liu S, Miyata T, Song Q, Wei Q, Zhao C, Lin C, Yang J. Targeted therapeutics and novel signaling pathways in non-alcohol-associated fatty liver/steatohepatitis (NAFL/NASH). Signal Transduct Target Ther 2022; 7:287. [PMID: 35963848 PMCID: PMC9376100 DOI: 10.1038/s41392-022-01119-3] [Citation(s) in RCA: 95] [Impact Index Per Article: 47.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/15/2022] [Accepted: 07/08/2022] [Indexed: 11/24/2022] Open
Abstract
Non-alcohol-associated fatty liver/steatohepatitis (NAFL/NASH) has become the leading cause of liver disease worldwide. NASH, an advanced form of NAFL, can be progressive and more susceptible to developing cirrhosis and hepatocellular carcinoma. Currently, lifestyle interventions are the most essential and effective strategies for preventing and controlling NAFL without the development of fibrosis. While there are still limited appropriate drugs specifically to treat NAFL/NASH, growing progress is being seen in elucidating the pathogenesis and identifying therapeutic targets. In this review, we discussed recent developments in etiology and prospective therapeutic targets, as well as pharmacological candidates in pre/clinical trials and patents, with a focus on diabetes, hepatic lipid metabolism, inflammation, and fibrosis. Importantly, growing evidence elucidates that the disruption of the gut-liver axis and microbe-derived metabolites drive the pathogenesis of NAFL/NASH. Extracellular vesicles (EVs) act as a signaling mediator, resulting in lipid accumulation, macrophage and hepatic stellate cell activation, further promoting inflammation and liver fibrosis progression during the development of NAFL/NASH. Targeting gut microbiota or EVs may serve as new strategies for the treatment of NAFL/NASH. Finally, other mechanisms, such as cell therapy and genetic approaches, also have enormous therapeutic potential. Incorporating drugs with different mechanisms and personalized medicine may improve the efficacy to better benefit patients with NAFL/NASH.
Collapse
Affiliation(s)
- Xiaohan Xu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Kyle L Poulsen
- Department of Anesthesiology, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA
| | - Lijuan Wu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Innovation Center of Marine Drug Screening & Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Shan Liu
- Innovation Center of Marine Drug Screening & Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Tatsunori Miyata
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Qiaoling Song
- Innovation Center of Marine Drug Screening & Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Qingda Wei
- School of Medicine, Zhengzhou University, Zhengzhou, China
| | - Chenyang Zhao
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Innovation Center of Marine Drug Screening & Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Chunhua Lin
- Department of Urology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Jinbo Yang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China.
- Innovation Center of Marine Drug Screening & Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
| |
Collapse
|