1
|
Wang W, Dong L, Lv H, An Y, Zhang C, Zheng Z, Guo Y, He L, Wang L, Wang J, Shi X, Li N, Zheng M. Downregulating miRNA-199a-5p exacerbates fluorouracil-induced cardiotoxicity by activating the ATF6 signaling pathway. Aging (Albany NY) 2024; 16:5916-5928. [PMID: 38536006 PMCID: PMC11042954 DOI: 10.18632/aging.205679] [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: 10/25/2023] [Accepted: 02/27/2024] [Indexed: 04/23/2024]
Abstract
BACKGROUND Fluorouracil (5-FU) might produce serious cardiac toxic reactions. miRNA-199a-5p is a miRNA primarily expressed in myocardial cells and has a protective effect on vascular endothelium. Under hypoxia stress, the expression level of miRNA-199a-5p was significantly downregulated and is closely related to cardiovascular events such as coronary heart disease, heart failure, and hypertension. We explored whether 5-FU activates the endoplasmic reticulum stress ATF6 pathway by regulating the expression of miRNA-199a-5p in cardiac toxicity. METHODS This project established a model of primary cardiomyocytes derived from neonatal rats and treated them with 5-FU in vitro. The expression of miRNA-199a-5p and its regulation were explored in vitro and in vivo. RESULTS 5-FU decreases the expression of miRNA-199a-5p in cardiomyocytes, activates the endoplasmic reticulum stress ATF6 pathway, and increases the expression of GRP78 and ATF6, affecting the function of cardiomyocytes, and induces cardiac toxicity. The rescue assay further confirmed that miRNA-199a-5p supplementation can reduce the cardiotoxicity caused by 5-FU, and its protective effect on cardiomyocytes depends on the downregulation of the endoplasmic reticulum ATF6 signaling pathway. CONCLUSIONS 5-FU can down-regulate expression of miRNA-199a-5p, then activate the endoplasmic reticulum stress ATF6 pathway, increase the expression of GRP78 and ATF6, affect the function of cardiomyocytes, and induce cardiac toxicity.
Collapse
Affiliation(s)
- Wei Wang
- Department of Oncology, The First Hospital of Hebei Medical University, Yuhua, Shijiazhuang 050031 Hebei, China
| | - Liang Dong
- Department of Cardiology, The First Hospital of Hebei Medical University, Yuhua, Shijiazhuang 050031, Hebei, China
| | - Hengxu Lv
- Department of Oncology, The First Hospital of Hebei Medical University, Yuhua, Shijiazhuang 050031 Hebei, China
| | - Yonghui An
- Department of Oncology, The First Hospital of Hebei Medical University, Yuhua, Shijiazhuang 050031 Hebei, China
| | - Changwang Zhang
- Department of Oncology, The First Hospital of Hebei Medical University, Yuhua, Shijiazhuang 050031 Hebei, China
| | - Zheng Zheng
- Department of Oncology, The First Hospital of Hebei Medical University, Yuhua, Shijiazhuang 050031 Hebei, China
| | - Ying Guo
- Department of Oncology, The First Hospital of Hebei Medical University, Yuhua, Shijiazhuang 050031 Hebei, China
| | - Li He
- Department of Oncology, The First Hospital of Hebei Medical University, Yuhua, Shijiazhuang 050031 Hebei, China
| | - Libin Wang
- Department of Oncology, The First Hospital of Hebei Medical University, Yuhua, Shijiazhuang 050031 Hebei, China
| | - Jinmei Wang
- Department of Oncology, The First Hospital of Hebei Medical University, Yuhua, Shijiazhuang 050031 Hebei, China
| | - Xinlei Shi
- Department of Oncology, The First Hospital of Hebei Medical University, Yuhua, Shijiazhuang 050031 Hebei, China
| | - Na Li
- Department of Oncology, The First Hospital of Hebei Medical University, Yuhua, Shijiazhuang 050031 Hebei, China
| | - Mingqi Zheng
- Department of Cardiology, The First Hospital of Hebei Medical University, Yuhua, Shijiazhuang 050031, Hebei, China
- Hebei Key Laboratory of Heart and Metabolism, Shijiazhuang 050031, Hebei, China
| |
Collapse
|
2
|
Suhail H, Peng H, Matrougui K, Rhaleb NE. Ac-SDKP attenuates ER stress-stimulated collagen production in cardiac fibroblasts by inhibiting CHOP-mediated NF-κB expression. Front Pharmacol 2024; 15:1352222. [PMID: 38495093 PMCID: PMC10940518 DOI: 10.3389/fphar.2024.1352222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 02/19/2024] [Indexed: 03/19/2024] Open
Abstract
Inflammation and cardiac fibrosis are prevalent pathophysiologic conditions associated with hypertension, cardiac remodeling, and heart failure. Endoplasmic reticulum (ER) stress triggers the cells to activate unfolded protein responses (UPRs) and upregulate the ER stress chaperon, enzymes, and downstream transcription factors to restore normal ER function. The mechanisms that link ER stress-induced UPRs upregulation and NF-κB activation that results in cardiac inflammation and collagen production remain elusive. N-Acetyl-Ser-Asp-Lys-Pro (Ac-SDKP), a natural tetrapeptide that negatively regulates inflammation and fibrosis, has been reported. Whether it can inhibit ER stress-induced collagen production in cardiac fibroblasts remains unclear. Thus, we hypothesized that Ac-SDKP attenuates ER stress-stimulated collagen production in cardiac fibroblasts by inhibiting CHOP-mediated NF-κB expression. We aimed to study whether Ac-SDKP inhibits tunicamycin (TM)-induced ER stress signaling, NF-κB signaling, the release of inflammatory cytokine interleukin-6, and collagen production in human cardiac fibroblasts (HCFs). HCFs were pre-treated with Ac-SDKP (10 nM) and then stimulated with TM (0.25 μg/mL). We found that Ac-SDKP inhibits TM-induced collagen production by attenuating ER stress-induced UPRs upregulation and CHOP/NF-κB transcriptional signaling pathways. CHOP deletion by specific shRNA maintains the inhibitory effect of Ac-SDKP on NF-κB and type-1 collagen (Col-1) expression at both protein and mRNA levels. Attenuating ER stress-induced UPR sensor signaling by Ac-SDKP seems a promising therapeutic strategy to combat detrimental cardiac inflammation and fibrosis.
Collapse
Affiliation(s)
- Hamid Suhail
- Department of Internal Medicine, Hypertension and Vascular Research Division, Henry Ford Hospital, Detroit, MI, United States
| | - Hongmei Peng
- Department of Internal Medicine, Hypertension and Vascular Research Division, Henry Ford Hospital, Detroit, MI, United States
| | - Khalid Matrougui
- Department of Physiology Sciences, Eastern Virginia Medical School, Norfolk, VA, United States
| | - Nour-Eddine Rhaleb
- Department of Internal Medicine, Hypertension and Vascular Research Division, Henry Ford Hospital, Detroit, MI, United States
- Department of Physiology, Wayne State University, Detroit, MI, United States
| |
Collapse
|
3
|
Rowland MB, Moore PE, Correll RN. Regulation of cardiac fibroblast cell death by unfolded protein response signaling. Front Physiol 2024; 14:1304669. [PMID: 38283278 PMCID: PMC10811265 DOI: 10.3389/fphys.2023.1304669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 12/21/2023] [Indexed: 01/30/2024] Open
Abstract
The endoplasmic reticulum (ER) is a tightly regulated organelle that requires specific environmental properties to efficiently carry out its function as a major site of protein synthesis and folding. Embedded in the ER membrane, ER stress sensors inositol-requiring enzyme 1 (IRE1), protein kinase R (PKR)-like endoplasmic reticulum kinase (PERK), and activating transcription factor 6 (ATF6) serve as a sensitive quality control system collectively known as the unfolded protein response (UPR). In response to an accumulation of misfolded proteins, the UPR signals for protective mechanisms to cope with the cellular stress. Under prolonged unstable conditions and an inability to regain homeostasis, the UPR can shift from its original adaptive response to mechanisms leading to UPR-induced apoptosis. These UPR signaling pathways have been implicated as an important feature in the development of cardiac fibrosis, but identifying effective treatments has been difficult. Therefore, the apoptotic mechanisms of UPR signaling in cardiac fibroblasts (CFs) are important to our understanding of chronic fibrosis in the heart. Here, we summarize the maladaptive side of the UPR, activated downstream pathways associated with cell death, and agents that have been used to modify UPR-induced apoptosis in CFs.
Collapse
Affiliation(s)
- Mary B. Rowland
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, United States
| | - Patrick E. Moore
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, United States
| | - Robert N. Correll
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, United States
- Center for Convergent Bioscience and Medicine, University of Alabama, Tuscaloosa, AL, United States
| |
Collapse
|
4
|
Luo L, Wang S, Hu Y, Wang L, Jiang X, Zhang J, Liu X, Guo X, Luo Z, Zhu C, Xie M, Li Y, You J, Yang F. Precisely Regulating M2 Subtype Macrophages for Renal Fibrosis Resolution. ACS NANO 2023; 17:22508-22526. [PMID: 37948096 DOI: 10.1021/acsnano.3c05998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Macrophages are central to the pathogenesis of kidney disease and serve as an effective therapeutic target for kidney injury and fibrosis. Among them, M2-type macrophages have double-edged effects regarding anti-inflammatory effects and tissue repair. Depending on the polarization of the M2 subtypes (M2a or M2c) in the diseased microenvironment, they can either mediate normal tissue repair or drive tissue fibrosis. In renal fibrosis, M2a promotes disease progression through macrophage-to-myofibroblast transition (MMT) cells, while M2c possesses potent anti-inflammatory functions and promotes tissue repair, and is inhibited. The mechanisms underlying this differentiation are complex and are currently not well understood. Therefore, in this study, we first confirmed that M2a-derived MMT cells are responsible for the development of renal fibrosis and demonstrated that the intensity of TGF-β signaling is a major factor determining the differential polarization of M2a and M2c. Under excessive TGF-β stimulation, M2a undergoes a process known as MMT cells, whereas moderate TGF-β stimulation favors the polarization of M2c phenotype macrophages. Based on these findings, we employed targeted nanotechnology to codeliver endoplasmic reticulum stress (ERS) inhibitor (Ceapin 7, Cea or C) and conventional glucocorticoids (Dexamethasone, Dex or D), precisely modulating the ATF6/TGF-β/Smad3 signaling axis within macrophages. This approach calibrated the level of TGF-β stimulation on macrophages, promoting their polarization toward the M2c phenotype and suppressing excessive MMT polarization. The study indicates that the combination of ERS inhibitor and a first-line anti-inflammatory drug holds promise as an effective therapeutic approach for renal fibrosis resolution.
Collapse
Affiliation(s)
- Lihua Luo
- College of Pharmaceutical Sciences, Zhejiang University, 886 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
- National Key Laboratory of Advanced Drug Delivery and Release Systems, Hangzhou 310058, Zhejiang, China
| | - Sijie Wang
- College of Pharmaceutical Sciences, Zhejiang University, 886 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
| | - Yilong Hu
- College of Pharmaceutical Sciences, Zhejiang University, 886 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
| | - Litong Wang
- College of Pharmaceutical Sciences, Zhejiang University, 886 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
| | - Xindong Jiang
- College of Pharmaceutical Sciences, Zhejiang University, 886 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
| | - Junlei Zhang
- College of Pharmaceutical Sciences, Zhejiang University, 886 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
| | - Xu Liu
- College of Pharmaceutical Sciences, Zhejiang University, 886 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
| | - Xuemeng Guo
- College of Pharmaceutical Sciences, Zhejiang University, 886 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
| | - Zhenyu Luo
- College of Pharmaceutical Sciences, Zhejiang University, 886 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
| | - Chunqi Zhu
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China
| | - Miaomiao Xie
- The Second Affiliated Hospital of Shenzhen University, 118 Longjinger Road, Baoan District, Shenzhen 518101, Guangdong, China
| | - Yeqing Li
- The People's Hospital of Baoan Shenzhen, 118 Longjinger Road, Baoan District, Shenzhen 518101, Guangdong, China
| | - Jian You
- College of Pharmaceutical Sciences, Zhejiang University, 886 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
| | - Fuchun Yang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, Zhejiang, China
| |
Collapse
|
5
|
Chu H, Fan X, Zhang Z, Han L. miR-199a-5p inhibits aortic valve calcification by targeting ATF6 and GRP78 in valve interstitial cells. Open Med (Wars) 2023; 18:20230777. [PMID: 37693833 PMCID: PMC10487378 DOI: 10.1515/med-2023-0777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 06/25/2023] [Accepted: 07/31/2023] [Indexed: 09/12/2023] Open
Abstract
Calcific aortic valve disease (CAVD) is an important cause of disease burden among aging populations. Excessive active endoplasmic reticulum stress (ERS) was demonstrated to promote CAVD. The expression level of miR-199a-5p in patients with CAVD was reported to be downregulated. In this article, we aimed to investigate the function and mechanism of miR-199a-5p in CAVD. The expression level of miR-199a-5p and ERS markers was identified in calcific aortic valve samples and osteogenic induction by real-time quantitative polymerase chain reaction (RT-qPCR), immunohistochemistry, and western blotting (WB). Alizarin red staining, RT-qPCR, and WB were used for the verification of the function of miR-199a-5p. The dual luciferase reporter assay and rescue experiment were conducted to illuminate the mechanism of miR-199a-5p. In our study, the expression level of miR-199a-5p was significantly decreased in calcified aortic valves and valve interstitial cells' (VICs) osteogenic induction model, accompanying with the upregulation of ERS markers. Overexpression of miR-199a-5p suppressed the osteogenic differentiation of VICs, while downregulation of miR-199a-5p promoted this function. 78 kDa glucose-regulated protein (GRP78) and activating transcription factor 6 (ATF6), both of which were pivotal modulators in ERS, were potential targets of miR-199a-5p. miR-199a-5p directly targeted GRP78 and ATF6 to modulate osteoblastic differentiation of VICs. miR-199a-5p inhibits osteogenic differentiation of VICs by regulating ERS via targeting GRP78 and ATF6.
Collapse
Affiliation(s)
- Heng Chu
- Department of Thoracic Surgery, Qingdao Hospital, University of Health and Rehabilitation Sciences (Qingdao Municipal Hospital), Qingdao, Shandong, 266000, China
| | - XingLi Fan
- Department of Cardiovascular Surgery, Changhai Hospital Affiliated to Naval Medical University, Shanghai200433, China
| | - Zhe Zhang
- Department of Thoracic Surgery, Qingdao Hospital, University of Health and Rehabilitation Sciences (Qingdao Municipal Hospital), No. 1 Jiaozhou Road, Shibei District,, Qingdao, Shandong, 266000, China
| | - Lin Han
- Department of Cardiovascular Surgery, Changhai Hospital Affiliated to Naval Medical University, 168 Changhai Road, Yangpu District, Shanghai200433, China
| |
Collapse
|
6
|
Han Z, Zhang X, Liu C, Lu M, Wang J, Nie Y, Zhang H. Analysis of long noncoding RNAs expression profiles in the human cardiac fibroblasts with cardiac fibrosis. Biochem Biophys Res Commun 2023; 660:73-81. [PMID: 37068391 DOI: 10.1016/j.bbrc.2023.04.019] [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: 03/19/2023] [Revised: 04/03/2023] [Accepted: 04/08/2023] [Indexed: 04/19/2023]
Abstract
Cardiac fibrosis is a common pathological feature of cardiac remodelling process with disordered expression of multiple genes and eventually lead to heart failure. Emerging evidence suggests that long noncoding RNAs (lncRNAs) have emerged as critical regulators of various biological processes. However, the exact mechanisms of lncRNAs as mediators in cardiac fibrosis have not been fully elucidated. This study aimed to profile the lncRNA expression pattern in human cardiac fibroblasts (HCFs) with cardiac fibrosis. We treated HCFs with transforming growth factor-β (TGF-β) to induce their activation. Then, strand-specific RNA-seq was performed to profile and classify lncRNAs; and perform functional analysis in HCFs. We study the transformation of HCFs with molecular and cell biology methods. Among all identified lncRNA candidates, 176 and 526 lncRNAs were upregulated and downregulated respectively in TGF-β-stimulated HCFs compared with controls. Functional analyses revealed that the target genes of differentially expressed lncRNAs were mainly related to focal adhesion, metabolic pathways, Hippo signaling pathway, PI3K-Akt signaling pathway, regulation of actin cytoskeleton, and hypertrophic cardiomyopathy. As a representative, novel lncRNAs NONHSAG005537 and NONHSAG017620 inhibited the proliferation, migration, invasion, and transformation of HCFs induced by TGF-β. Collectively, our study established the expression signature of lncRNAs in cardiac fibrosis and demonstrated the cardioprotective role of NONHSAG005537 and NONHSAG017620 in cardiac fibrosis, providing a promising target for anti-fibrotic therapy.
Collapse
Affiliation(s)
- Ziqiang Han
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 10037, China.
| | - Xiaoman Zhang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 10037, China
| | - Chao Liu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 10037, China
| | - Minjie Lu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 10037, China
| | - Jizheng Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 10037, China.
| | - Yu Nie
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 10037, China.
| | - Hongju Zhang
- Department of Echocardiography, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China.
| |
Collapse
|
7
|
Shaashua L, Ben-Shmuel A, Pevsner-Fischer M, Friedman G, Levi-Galibov O, Nandakumar S, Barki D, Nevo R, Brown LE, Zhang W, Stein Y, Lior C, Kim HS, Bojmar L, Jarnagin WR, Lecomte N, Mayer S, Stok R, Bishara H, Hamodi R, Levy-Lahad E, Golan T, Porco JA, Iacobuzio-Donahue CA, Schultz N, Tuveson DA, Lyden D, Kelsen D, Scherz-Shouval R. BRCA mutational status shapes the stromal microenvironment of pancreatic cancer linking clusterin expression in cancer associated fibroblasts with HSF1 signaling. Nat Commun 2022; 13:6513. [PMID: 36316305 PMCID: PMC9622893 DOI: 10.1038/s41467-022-34081-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 10/13/2022] [Indexed: 11/12/2022] Open
Abstract
Tumors initiate by mutations in cancer cells, and progress through interactions of the cancer cells with non-malignant cells of the tumor microenvironment. Major players in the tumor microenvironment are cancer-associated fibroblasts (CAFs), which support tumor malignancy, and comprise up to 90% of the tumor mass in pancreatic cancer. CAFs are transcriptionally rewired by cancer cells. Whether this rewiring is differentially affected by different mutations in cancer cells is largely unknown. Here we address this question by dissecting the stromal landscape of BRCA-mutated and BRCA Wild-type pancreatic ductal adenocarcinoma. We comprehensively analyze pancreatic cancer samples from 42 patients, revealing different CAF subtype compositions in germline BRCA-mutated vs. BRCA Wild-type tumors. In particular, we detect an increase in a subset of immune-regulatory clusterin-positive CAFs in BRCA-mutated tumors. Using cancer organoids and mouse models we show that this process is mediated through activation of heat-shock factor 1, the transcriptional regulator of clusterin. Our findings unravel a dimension of stromal heterogeneity influenced by germline mutations in cancer cells, with direct implications for clinical research.
Collapse
Affiliation(s)
- Lee Shaashua
- grid.13992.300000 0004 0604 7563Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Aviad Ben-Shmuel
- grid.13992.300000 0004 0604 7563Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Meirav Pevsner-Fischer
- grid.13992.300000 0004 0604 7563Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Gil Friedman
- grid.13992.300000 0004 0604 7563Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Oshrat Levi-Galibov
- grid.13992.300000 0004 0604 7563Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Subhiksha Nandakumar
- grid.51462.340000 0001 2171 9952Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY USA
| | - Debra Barki
- grid.13992.300000 0004 0604 7563Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Reinat Nevo
- grid.13992.300000 0004 0604 7563Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Lauren E. Brown
- grid.189504.10000 0004 1936 7558Department of Chemistry and Center for Molecular Discovery (BU-CMD), Boston University, Boston, MA USA
| | - Wenhan Zhang
- grid.189504.10000 0004 1936 7558Department of Chemistry and Center for Molecular Discovery (BU-CMD), Boston University, Boston, MA USA
| | - Yaniv Stein
- grid.13992.300000 0004 0604 7563Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Chen Lior
- grid.13992.300000 0004 0604 7563Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Han Sang Kim
- grid.5386.8000000041936877XChildren’s Cancer and Blood Foundation Laboratories, Departments of Pediatrics, and Cell and Developmental Biology, Drukier Institute for Children’s Health, Meyer Cancer Center, Weill Cornell Medicine, New York, NY USA ,grid.15444.300000 0004 0470 5454Yonsei Cancer Center, Division of Medical Oncology, Department of Internal Medicine, Graduate School of Medical Science, Brain Korea 21 Project, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Linda Bojmar
- grid.5386.8000000041936877XChildren’s Cancer and Blood Foundation Laboratories, Departments of Pediatrics, and Cell and Developmental Biology, Drukier Institute for Children’s Health, Meyer Cancer Center, Weill Cornell Medicine, New York, NY USA ,grid.5640.70000 0001 2162 9922Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - William R. Jarnagin
- grid.51462.340000 0001 2171 9952Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY USA
| | - Nicolas Lecomte
- grid.51462.340000 0001 2171 9952David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY USA
| | - Shimrit Mayer
- grid.13992.300000 0004 0604 7563Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Roni Stok
- grid.13992.300000 0004 0604 7563Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Hend Bishara
- grid.13992.300000 0004 0604 7563Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Rawand Hamodi
- grid.13992.300000 0004 0604 7563Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Ephrat Levy-Lahad
- grid.415593.f0000 0004 0470 7791The Fuld Family Medical Genetics Institute, Shaare Zedek Medical Center, Jerusalem, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Talia Golan
- grid.12136.370000 0004 1937 0546Oncology Institute, Sheba Medical Center at Tel-Hashomer, Tel Aviv University, Tel Aviv, Israel
| | - John A. Porco
- grid.189504.10000 0004 1936 7558Department of Chemistry and Center for Molecular Discovery (BU-CMD), Boston University, Boston, MA USA
| | - Christine A. Iacobuzio-Donahue
- grid.51462.340000 0001 2171 9952David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY USA
| | - Nikolaus Schultz
- grid.51462.340000 0001 2171 9952Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY USA
| | - David A. Tuveson
- grid.225279.90000 0004 0387 3667Cancer Center, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, NY USA
| | - David Lyden
- grid.5386.8000000041936877XChildren’s Cancer and Blood Foundation Laboratories, Departments of Pediatrics, and Cell and Developmental Biology, Drukier Institute for Children’s Health, Meyer Cancer Center, Weill Cornell Medicine, New York, NY USA
| | - David Kelsen
- grid.5386.8000000041936877XGastrointestinal Oncology Service, Memorial Sloan Kettering Cancer Center, Weill Cornell Medical College, New York, NY USA
| | - Ruth Scherz-Shouval
- grid.13992.300000 0004 0604 7563Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| |
Collapse
|
8
|
Mogre S, Blazanin N, Walsh H, Ibinson J, Minnich C, Andrew Hu CC, Glick AB. TGFβ1 regulates HRas-mediated activation of IRE1α through the PERK-RPAP2 axis in keratinocytes. Mol Carcinog 2022; 61:958-971. [PMID: 35975910 PMCID: PMC9486931 DOI: 10.1002/mc.23453] [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: 02/08/2022] [Revised: 04/25/2022] [Accepted: 06/08/2022] [Indexed: 11/08/2022]
Abstract
Transforming Growth Factor β1 (TGFβ1) is a critical regulator of tumor progression in response to HRas. Recently, TGFβ1 has been shown to trigger ER stress in many disease models; however, its role in oncogene-induced ER stress is unclear. Oncogenic HRas induces the unfolded protein response (UPR) predominantly via the Inositol-requiring enzyme 1α (IRE1α) pathway to initiate the adaptative responses to ER stress, with importance for both proliferation and senescence. Here, we show a role of the UPR sensor proteins IRE1α and (PKR)-like endoplasmic reticulum kinase (PERK) to mediate the tumor-suppressive roles of TGFβ1 in mouse keratinocytes expressing mutant forms of HRas. TGFβ1 suppressed IRE1α phosphorylation and activation by HRas both in in vitro and in vivo models while simultaneously activating the PERK pathway. However, the increase in ER stress indicated an uncoupling of ER stress and IRE1α activation by TGFβ1. Pharmacological and genetic approaches demonstrated that TGFβ1-dependent dephosphorylation of IRE1α was mediated by PERK through RNA Polymerase II Associated Protein 2 (RPAP2), a PERK-dependent IRE1α phosphatase. In addition, TGFβ1-mediated growth arrest in oncogenic HRas keratinocytes was partially dependent on PERK-induced IRE1α dephosphorylation and inactivation. Together, these results demonstrate a critical cross-talk between UPR proteins that is important for TGFβ1-mediated tumor suppressive responses.
Collapse
Affiliation(s)
- Saie Mogre
- Department of Veterinary and Biomedical Sciences, Pennsylvania State University, Pennsylvania, USA
| | - Nicholas Blazanin
- Department of Veterinary and Biomedical Sciences, Pennsylvania State University, Pennsylvania, USA
| | - Hailey Walsh
- Department of Veterinary and Biomedical Sciences, Pennsylvania State University, Pennsylvania, USA
| | - Jack Ibinson
- Department of Veterinary and Biomedical Sciences, Pennsylvania State University, Pennsylvania, USA
| | - Chase Minnich
- Department of Veterinary and Biomedical Sciences, Pennsylvania State University, Pennsylvania, USA
| | - Chih-Chi Andrew Hu
- Center for Translational Research in Hematologic Malignancies, Houston Methodist Cancer Center, Houston Methodist Research Institute, Houston, Texas, USA
| | - Adam B Glick
- Department of Veterinary and Biomedical Sciences, Pennsylvania State University, Pennsylvania, USA
| |
Collapse
|
9
|
Turishcheva E, Vildanova M, Onishchenko G, Smirnova E. The Role of Endoplasmic Reticulum Stress in Differentiation of Cells of Mesenchymal Origin. BIOCHEMISTRY. BIOKHIMIIA 2022; 87:916-931. [PMID: 36180988 PMCID: PMC9483250 DOI: 10.1134/s000629792209005x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/28/2022] [Accepted: 06/30/2022] [Indexed: 05/23/2023]
Abstract
Endoplasmic reticulum (ER) is a multifunctional membrane-enclosed organelle. One of the major ER functions is cotranslational transport and processing of secretory, lysosomal, and transmembrane proteins. Impaired protein processing caused by disturbances in the ER homeostasis results in the ER stress. Restoration of normal ER functioning requires activation of an adaptive mechanism involving cell response to misfolded proteins, the so-called unfolded protein response (UPR). Besides controlling protein folding, UPR plays a key role in other physiological processes, in particular, differentiation of cells of connective, muscle, epithelial, and neural tissues. Cell differentiation is induced by the physiological levels of ER stress, while excessive ER stress suppresses differentiation and can result in cell death. So far, it remains unknown whether UPR activation induces cell differentiation or if UPR is initiated by the upregulated synthesis of secretory proteins during cell differentiation. Cell differentiation is an important stage in the development of multicellular organisms and is tightly controlled. Suppression or excessive activation of this process can lead to the development of various pathologies in an organism. In particular, impairments in the differentiation of connective tissue cells can result in the development of fibrosis, obesity, and osteoporosis. Recently, special attention has been paid to fibrosis as one of the major complications of COVID-19. Therefore, studying the role of UPR in the activation of cell differentiation is of both theoretical and practical interest, as it might result in the identification of molecular targets for selective regulation of cell differentiation stages and as well as the potential to modulate the mechanisms involved in the development of various pathological states.
Collapse
Affiliation(s)
| | - Mariya Vildanova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Galina Onishchenko
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Elena Smirnova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| |
Collapse
|
10
|
Martínez-Martínez E, Fernández-Irigoyen J, Santamaría E, Nieto ML, Bravo-San Pedro JM, Cachofeiro V. Mitochondrial Oxidative Stress Induces Cardiac Fibrosis in Obese Rats through Modulation of Transthyretin. Int J Mol Sci 2022; 23:ijms23158080. [PMID: 35897655 PMCID: PMC9330867 DOI: 10.3390/ijms23158080] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 07/20/2022] [Accepted: 07/20/2022] [Indexed: 02/01/2023] Open
Abstract
A proteomic approach was used to characterize potential mediators involved in the improvement in cardiac fibrosis observed with the administration of the mitochondrial antioxidant MitoQ in obese rats. Male Wistar rats were fed a standard diet (3.5% fat; CT) or a high-fat diet (35% fat; HFD) and treated with vehicle or MitoQ (200 μM) in drinking water for 7 weeks. Obesity modulated the expression of 33 proteins as compared with controls of the more than 1000 proteins identified. These include proteins related to endoplasmic reticulum (ER) stress and oxidative stress. Proteomic analyses revealed that HFD animals presented with an increase in cardiac transthyretin (TTR) protein levels, an effect that was prevented by MitoQ treatment in obese animals. This was confirmed by plasma levels, which were associated with those of cardiac levels of both binding immunoglobulin protein (BiP), a marker of ER stress, and fibrosis. TTR stimulated collagen I production and BiP in cardiac fibroblasts. This upregulation was prevented by the presence of MitoQ. In summary, the results suggest a role of TTR in cardiac fibrosis development associated with obesity and the beneficial effects of treatment with mitochondrial antioxidants.
Collapse
Affiliation(s)
- Ernesto Martínez-Martínez
- Departamento de Fisiología, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain;
- Ciber de Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, 28222 Madrid, Spain;
- Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28007 Madrid, Spain
- Correspondence: (E.M.-M.); (V.C.); Tel.: +34-913-941-483 (E.M.-M.); +34-913-941-489 (V.C.)
| | - Joaquín Fernández-Irigoyen
- Proteomics Platform, Navarrabiomed, Hospital Universitario de Navarra (HUN), Universidad Pública de Navarra (UPNA), IdiSNA, 31008 Pamplona, Spain; (J.F.-I.); (E.S.)
| | - Enrique Santamaría
- Proteomics Platform, Navarrabiomed, Hospital Universitario de Navarra (HUN), Universidad Pública de Navarra (UPNA), IdiSNA, 31008 Pamplona, Spain; (J.F.-I.); (E.S.)
| | - María Luisa Nieto
- Ciber de Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, 28222 Madrid, Spain;
- Instituto de Biología y Genética Molecular, CSIC-Universidad de Valladolid, 47002 Valladolid, Spain
| | | | - Victoria Cachofeiro
- Departamento de Fisiología, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain;
- Ciber de Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, 28222 Madrid, Spain;
- Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28007 Madrid, Spain
- Correspondence: (E.M.-M.); (V.C.); Tel.: +34-913-941-483 (E.M.-M.); +34-913-941-489 (V.C.)
| |
Collapse
|
11
|
Cai W, Sun X, Jin F, Xiao D, Li H, Sun H, Wang Y, Lu Y, Liu J, Huang C, Wang X, Gao S, Wang H, Gao C, Zhao T, Hao J. PERK-eIF2α-ERK1/2 axis drives mesenchymal-endothelial transition of cancer-associated fibroblasts in pancreatic cancer. Cancer Lett 2021; 515:86-95. [PMID: 34052329 DOI: 10.1016/j.canlet.2021.05.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 05/06/2021] [Accepted: 05/20/2021] [Indexed: 01/01/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is characterized by remarkable desmoplasia, usually driven by cancer-associated fibroblasts (CAFs), influencing patient prognosis. CAFs are a group of plastic cells responsible for tumor growth and metastasis. Fibroblasts have been reported to directly contribute to angiogenesis by undergoing mesenchymal-endothelial transition (MEndoT) after ischemic injury in the heart, brain, and hindlimbs. However, whether CAFs can undergo similar transdifferentiation in the hostile tumor microenvironment and directly contribute to tumor angiogenesis remains unclear. Herein, we provide evidence that CAFs can adopt an endothelial cell-like phenotype and directly contribute to tumor angiogenesis in vitro and in vivo. Furthermore, this program is regulated by the PERK-eIF2α-ERK1/2 axis. Pharmacological inhibition of PERK with GSK2606414 limited the phenotypic transition of CAFs. In conclusion, our results suggest that CAFs contribute to tumor angiogenesis by undergoing the MEndoT, thus representing therapeutic targets for improving PDAC prognosis.
Collapse
Affiliation(s)
- Wenrun Cai
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China
| | - Xugang Sun
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China
| | - Fanjie Jin
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China
| | - Di Xiao
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China
| | - Hui Li
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China
| | - Huizhi Sun
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China
| | - Yifei Wang
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China
| | - Yang Lu
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China
| | - Jing Liu
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China
| | - Chongbiao Huang
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China
| | - Xiuchao Wang
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China
| | - Song Gao
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China
| | - Hongwei Wang
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China
| | - Chuntao Gao
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China
| | - Tiansuo Zhao
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China.
| | - Jihui Hao
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, PR China.
| |
Collapse
|
12
|
Xue F, Lu J, Buchl SC, Sun L, Shah VH, Malhi H, Maiers JL. Coordinated signaling of activating transcription factor 6α and inositol-requiring enzyme 1α regulates hepatic stellate cell-mediated fibrogenesis in mice. Am J Physiol Gastrointest Liver Physiol 2021; 320:G864-G879. [PMID: 33728997 PMCID: PMC8202196 DOI: 10.1152/ajpgi.00453.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Liver injury and the unfolded protein response (UPR) are tightly linked, but their relationship differs with cell type and injurious stimuli. UPR initiation promotes hepatic stellate cell (HSC) activation and fibrogenesis, but the underlying mechanisms are unclear. Despite the complexity and overlap downstream of UPR transducers inositol-requiring protein 1α (IRE1α), activating transcription factor 6α (ATF6α), and protein kinase RNA-like ER kinase (PERK), previous research in HSCs primarily focused on IRE1α. Here, we investigated the fibrogenic role of ATF6α or PERK in vitro and HSC-specific UPR signaling in vivo. Overexpression of ATF6α, but not the PERK effector activating transcription factor 4 (ATF4), promoted HSC activation and fibrogenic gene transcription in immortalized HSCs. Furthermore, ATF6α inhibition through Ceapin-A7, or Atf6a deletion, disrupted transforming growth factor β (TGFβ)-mediated activation of primary human hepatic stellate cells (hHSCs) or murine hepatic stellate cells (mHSCs), respectively. We investigated the fibrogenic role of ATF6α in vivo through conditional HSC-specific Atf6a deletion. Atf6aHSCΔ/Δ mice displayed reduced fibrosis and HSC activation following bile duct ligation (BDL) or carbon tetrachloride (CCl4)-induced injury. The Atf6aHSCΔ/Δ phenotype differed from HSC-specific Ire1a deletion, as Ire1aHSCΔ/Δ mice showed reduced fibrogenic gene transcription but no changes in fibrosis compared with Ire1afl/fl mice following BDL. Interestingly, ATF6α signaling increased in Ire1aΔ/Δ HSCs, whereas IRE1α signaling was upregulated in Atf6aΔ/Δ HSCs. Finally, we asked whether co-deletion of Atf6a and Ire1a additively limits fibrosis. Unexpectedly, fibrosis worsened in Atf6aHSCΔ/ΔIre1aHSCΔ/Δ mice following BDL, and Atf6aΔ/ΔIre1aΔ/Δ mHSCs showed increased fibrogenic gene transcription. ATF6α and IRE1α individually promote fibrogenic transcription in HSCs, and ATF6α drives fibrogenesis in vivo. Unexpectedly, disruption of both pathways sensitizes the liver to fibrogenesis, suggesting that fine-tuned UPR signaling is critical for regulating HSC activation and fibrogenesis.NEW & NOTEWORTHY ATF6α is a critical driver of hepatic stellate cell (HSC) activation in vitro. HSC-specific deletion of Atf6a limits fibrogenesis in vivo despite increased IRE1α signaling. Conditional deletion of Ire1α from HSCs limits fibrogenic gene transcription without impacting overall fibrosis. This could be due in part to observed upregulation of the ATF6α pathway. Dual loss of Atf6a and Ire1a from HSCs worsens fibrosis in vivo through enhanced HSC activation.
Collapse
Affiliation(s)
- Fei Xue
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Jianwen Lu
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Samuel C. Buchl
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Liankang Sun
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Vijay H. Shah
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Harmeet Malhi
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Jessica L. Maiers
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| |
Collapse
|
13
|
Rius B, Mesgarzadeh JS, Romine IC, Paxman RJ, Kelly JW, Wiseman RL. Pharmacologic targeting of plasma cell endoplasmic reticulum proteostasis to reduce amyloidogenic light chain secretion. Blood Adv 2021; 5:1037-1049. [PMID: 33599742 PMCID: PMC7903236 DOI: 10.1182/bloodadvances.2020002813] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 01/05/2021] [Indexed: 02/08/2023] Open
Abstract
Light chain (LC) amyloidosis (AL) involves the toxic aggregation of amyloidogenic immunoglobulin LCs secreted from a clonal expansion of diseased plasma cells. Current AL treatments use chemotherapeutics to ablate the AL plasma cell population. However, no treatments are available that directly reduce the toxic LC aggregation involved in AL pathogenesis. An attractive strategy to reduce toxic LC aggregation in AL involves enhancing endoplasmic reticulum (ER) proteostasis in plasma cells to reduce the secretion and subsequent aggregation of amyloidogenic LCs. Here, we show that the ER proteostasis regulator compound 147 reduces secretion of an amyloidogenic LC as aggregation-prone monomers and dimers in AL patient-derived plasma cells. Compound 147 was established to promote ER proteostasis remodeling by activating the ATF6 unfolded protein response signaling pathway through a mechanism involving covalent modification of ER protein disulfide isomerases (PDIs). However, we show that 147-dependent reductions in amyloidogenic LCs are independent of ATF6 activation. Instead, 147 reduces amyloidogenic LC secretion through the selective, on-target covalent modification of ER proteostasis factors, including PDIs, revealing an alternative mechanism by which this compound can influence ER proteostasis of amyloidogenic proteins. Importantly, compound 147 does not interfere with AL plasma cell toxicity induced by bortezomib, a standard chemotherapeutic used to ablate the underlying diseased plasma cells in AL. This shows that pharmacologic targeting of ER proteostasis through selective covalent modification of ER proteostasis factors is a strategy that can be used in combination with chemotherapeutics to reduce the LC toxicity associated with AL pathogenesis.
Collapse
Affiliation(s)
| | | | | | | | - Jeffery W Kelly
- Department of Chemistry, and
- Skaggs Institute for Chemical Biology, Scripps Research Institute, La Jolla, CA
| | | |
Collapse
|
14
|
Olivares-Silva F, Espitia-Corredor J, Letelier A, Vivar R, Parra-Flores P, Olmedo I, Montenegro J, Pardo-Jiménez V, Díaz-Araya G. TGF-β1 decreases CHOP expression and prevents cardiac fibroblast apoptosis induced by endoplasmic reticulum stress. Toxicol In Vitro 2021; 70:105041. [PMID: 33127435 DOI: 10.1016/j.tiv.2020.105041] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 10/08/2020] [Accepted: 10/25/2020] [Indexed: 02/06/2023]
Abstract
Transforming growth factor-beta 1 (TGF-β1) is a cytokine with marked pro-fibrotic action on cardiac fibroblasts (CF). TGF-β1 induces CF-to-cardiac myofibroblast (CMF) differentiation, defined by an increase in α-smooth muscle cells (α-SMA), collagen secretion and it has a cytoprotective effect against stimuli that induce apoptosis. In the Endoplasmic Reticulum (ER) lumen, misfolded protein accumulation triggers ER stress and induces apoptosis, and this process plays a critical role in cell death mediated by Ischemia/Reperfusion (I/R) injury and by ER stress inducers, such as Tunicamycin (Tn). Here, we studied the regulation of CHOP, a proapoptotic ER-stress-related transcription factor in CF under simulated I/R (sI/R) or exposed to Tn. Even though TGF-β1 has been shown to participate in ER stress, its regulatory effect on CF apoptosis and ER stress-induced by sI/R or TN has not been evaluated yet. CF from neonatal rats were exposed to sI/R, and cell death was evaluated by cell count and apoptosis by flow cytometry. ER stress was assessed by western blot against CHOP. Our results evidenced that sI/R (8/24) h or Tn triggers CF apoptosis and an increase in CHOP protein levels. TGF-β1 pre-treatment partially prevented apoptosis induced by sI/R or Tn. Furthermore, TGF-β1 pre-treatment completely prevented CHOP increase by sI/R or Tn. Additionally, we found a decrease in α-SMA expression induced by sI/R and in collagen secretion induced by Tn, which were not prevented by TGF-β1 treatment. In conclusion, TGF-β1 partially protects CF apoptosis induced by sI/R or Tn, through a mechanism that would involve ER stress.
Collapse
Affiliation(s)
- F Olivares-Silva
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - J Espitia-Corredor
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - A Letelier
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - R Vivar
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - P Parra-Flores
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - I Olmedo
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - J Montenegro
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - V Pardo-Jiménez
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - G Díaz-Araya
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile; Centro FONDAP Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile.
| |
Collapse
|