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He P, Sheng J, Qi J, Bai X, Li J, Wang F, Yuan Y, Zheng X. STAT3-induced NCK1 elevation promotes migration of triple-negative breast cancer cells via regulating ERK1/2 signaling. Mol Biol Rep 2021; 49:267-278. [PMID: 34846647 DOI: 10.1007/s11033-021-06868-y] [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: 04/27/2021] [Accepted: 10/21/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Noncatalytic region of tyrosine kinase 1 (NCK1) plays a key role in extracellular matrix degradation, which is required for the metastasis of triple-negative breast cancer (TNBC). However, the role NCK1 plays in the metastatic progression of TNBC is unknown. METHODS AND RESULTS Based on online databases, NCK1 was found to be highly expressed in TNBC as compared to normal breast-like subjects, which was also confirmed using TNBC cells and a tissue microarray. NCK1 expression gradually decreased with increased tumor stage. High NCK1 expression displayed a poor prognosis in lymph node-positive metastatic TNBC patients, but not in lymph node-negative patients. Using transwell assays and immunoblotting, we confirmed that NCK1 overexpression promoted, while NCK1 downregulation inhibited migration capabilities, as well as the expression of matrix metalloproteinases (MMP2/9), uridylyl phosphate adenosine, and plasminogen activator inhibitor-1 in TNBC cells. Mechanistically, NCK1 upregulation mediated the activation of MMP2/9 through ERK1/2 activity. Signal transducer and activator of transcription 3 (STAT3) was positively correlated with NCK1. STAT3 could directly bind to the promoter region of NCK1 to promote its expression and was accompanied by the elevation of MMP2/9 and ERK1/2 signaling, which were partially abolished by the knockdown of NCK1 in TNBC cells. CONCLUSIONS NCK1 may serve as a diagnostic and prognostic marker of metastatic TNBC. STAT3 upregulation promoted the expression of NCK1, which subsequently induced the migration and activity of MMPs in a ERK1/2 signaling-dependent manner in TNBC cells. NCK1 is a promising target for improving TNBC migration.
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Affiliation(s)
- Peina He
- Department of Medicine, Pingdingshan University, Chongwen Rd., Xincheng District, Pingdingshan, 467092, China
| | - Jianyun Sheng
- Department of Gynecotokology, Pingdingshan First People's Hospital, Pingdingshan, 410402, China
| | - Jinxu Qi
- Department of Medicine, Pingdingshan University, Chongwen Rd., Xincheng District, Pingdingshan, 467092, China
| | - Xianguang Bai
- Department of Medicine, Pingdingshan University, Chongwen Rd., Xincheng District, Pingdingshan, 467092, China
| | - Jiaxin Li
- Department of Medicine, Pingdingshan University, Chongwen Rd., Xincheng District, Pingdingshan, 467092, China
| | - Fubao Wang
- Department of Gynecotokology, Pingdingshan First People's Hospital, Pingdingshan, 410402, China
| | - Yamin Yuan
- Department of Medicine, Pingdingshan University, Chongwen Rd., Xincheng District, Pingdingshan, 467092, China
| | - Xinhua Zheng
- Department of Medicine, Pingdingshan University, Chongwen Rd., Xincheng District, Pingdingshan, 467092, China.
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2
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Li G, Gong J, Cao S, Wu Z, Cheng D, Zhu J, Huang X, Tang J, Yuan Y, Cai W, Zhang H. The Non-Coding RNAs Inducing Drug Resistance in Ovarian Cancer: A New Perspective for Understanding Drug Resistance. Front Oncol 2021; 11:742149. [PMID: 34660304 PMCID: PMC8514763 DOI: 10.3389/fonc.2021.742149] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 09/10/2021] [Indexed: 12/30/2022] Open
Abstract
Ovarian cancer, a common malignant tumor, is one of the primary causes of cancer-related deaths in women. Systemic chemotherapy with platinum-based compounds or taxanes is the first-line treatment for ovarian cancer. However, resistance to these chemotherapeutic drugs worsens the prognosis. The underlying mechanism of chemotherapeutic resistance in ovarian cancer remains unclear. Non-coding RNAs, including long non-coding RNAs, microRNAs, and circular RNAs, have been implicated in the development of drug resistance. Abnormally expressed non-coding RNAs can promote ovarian cancer resistance by inducing apoptosis inhibition, protective autophagy, abnormal tumor cell proliferation, epithelial-mesenchymal transition, abnormal glycolysis, drug efflux, and cancer cell stemness. This review summarizes the role of non-coding RNAs in the development of chemotherapeutic resistance in ovarian cancer, including their mechanisms, targets, and potential signaling pathways. This will facilitate the development of novel chemotherapeutic agents that can target these non-coding RNAs and improve ovarian cancer treatment.
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Affiliation(s)
- Gaofeng Li
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
| | - Jun Gong
- Department of Abdominal and Pelvic Medical Oncology, Huangshi Central Hospital, Affiliated Hospital of Hubei Polytechnic University, Edong Healthcare Group, Huangshi, China
| | - Shulong Cao
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
| | - Zhaoyang Wu
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
| | - Dong Cheng
- Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jia Zhu
- Hubei Enshi College, Enshi, China
| | - Xuqun Huang
- Department of Thoracic Medical Oncology, Huangshi Central Hospital, Affiliated Hospital of Hubei Polytechnic University, Edong Healthcare Group, Huangshi, China
| | - Jingyi Tang
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
| | - Yuning Yuan
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
| | - Wenqi Cai
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
| | - Haiyuan Zhang
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
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3
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Fu XF, Zhao HC, Yang CL, Chen CZ, Wang K, Gao F, Tian YZ, Zhao HL. MicroRNA-203-3p inhibits the proliferation, invasion and migration of pancreatic cancer cells by downregulating fibroblast growth factor 2. Oncol Lett 2021; 22:626. [PMID: 34267818 PMCID: PMC8258624 DOI: 10.3892/ol.2021.12887] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 04/23/2021] [Indexed: 12/12/2022] Open
Abstract
Aberrant expression of fibroblast growth factor 2 (FGF2) is a major cause of poor prognosis in patients with pancreatic cancer. MicroRNA (miRNA/miR) miR-203-3p is a newly identified miRNA that can affect the biological behavior of tumors. The present study investigated the function of miR-203-3p on the regulation of FGF2 expression, and its role in pancreatic cancer cell proliferation, apoptosis, invasion and migration. Reverse transcription-quantitative PCR was used to determine the mRNA expression levels of miR-203-3p and FGF2 in vitro. Cell Counting Kit-8, Annexin V-APC/7-AAD double-staining Apoptosis Detection kit, wound healing and Transwell assays were used to determine the proliferation, apoptosis, migration and invasion of pancreatic cancer cells. The binding of miR-203-3p to FGF2 was assessed by a luciferase reporter assay. The results demonstrated that miR-203-3p expression was downregulated in pancreatic cancer cells. Gain- and loss-of-function experiments indicated that miR-203-3p inhibited the proliferation, migration and invasion, and promoted the apoptosis of pancreatic cancer cells in vitro. In addition, it was found that alteration of miR-203-3p abolished the promoting effects of FGF2 on pancreatic cancer cells. The present study demonstrated that FGF2 significantly promoted the proliferation, invasion and migration of pancreatic cancer cells. The mechanism involved the binding of miR-203-3p to the 3′-untranslated region of FGF2 mRNA, resulting in the downregulation of FGF2. In conclusion, miR-203-3p inhibited FGF2 expression, regulated the proliferation and inhibited the invasion and migration of pancreatic cancer cells.
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Affiliation(s)
- Xi-Feng Fu
- Department of Biliary and Pancreatic Surgery, Shanxi Bethune Hospital, Shanxi Medical University, Taiyuan, Shanxi 030032, P.R. China.,Third Clinical College, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Hai-Chao Zhao
- Department of Biliary and Pancreatic Surgery, Shanxi Bethune Hospital, Shanxi Medical University, Taiyuan, Shanxi 030032, P.R. China.,Third Clinical College, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Chuan-Li Yang
- Department of Biliary and Pancreatic Surgery, Shanxi Bethune Hospital, Shanxi Medical University, Taiyuan, Shanxi 030032, P.R. China
| | - Chang-Zhou Chen
- Third Clinical College, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Kang Wang
- Third Clinical College, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Fei Gao
- Department of Biliary and Pancreatic Surgery, Shanxi Bethune Hospital, Shanxi Medical University, Taiyuan, Shanxi 030032, P.R. China
| | - Yang-Zhang Tian
- Department of Biliary and Pancreatic Surgery, Shanxi Bethune Hospital, Shanxi Medical University, Taiyuan, Shanxi 030032, P.R. China
| | - Hao-Liang Zhao
- Department of Biliary and Pancreatic Surgery, Shanxi Bethune Hospital, Shanxi Medical University, Taiyuan, Shanxi 030032, P.R. China.,Third Clinical College, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
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4
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Alfaidi M, Scott ML, Orr AW. Sinner or Saint?: Nck Adaptor Proteins in Vascular Biology. Front Cell Dev Biol 2021; 9:688388. [PMID: 34124074 PMCID: PMC8187788 DOI: 10.3389/fcell.2021.688388] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 04/28/2021] [Indexed: 12/28/2022] Open
Abstract
The Nck family of modular adaptor proteins, including Nck1 and Nck2, link phosphotyrosine signaling to changes in cytoskeletal dynamics and gene expression that critically modulate cellular phenotype. The Nck SH2 domain interacts with phosphotyrosine at dynamic signaling hubs, such as activated growth factor receptors and sites of cell adhesion. The Nck SH3 domains interact with signaling effectors containing proline-rich regions that mediate their activation by upstream kinases. In vascular biology, Nck1 and Nck2 play redundant roles in vascular development and postnatal angiogenesis. However, recent studies suggest that Nck1 and Nck2 differentially regulate cell phenotype in the adult vasculature. Domain-specific interactions likely mediate these isoform-selective effects, and these isolated domains may serve as therapeutic targets to limit specific protein-protein interactions. In this review, we highlight the function of the Nck adaptor proteins, the known differences in domain-selective interactions, and discuss the role of individual Nck isoforms in vascular remodeling and function.
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Affiliation(s)
- Mabruka Alfaidi
- Department of Pathology and Translational Pathobiology, Louisiana State University Health - Shreveport, Shreveport, LA, United States
| | - Matthew L Scott
- Department of Pathology and Translational Pathobiology, Louisiana State University Health - Shreveport, Shreveport, LA, United States
| | - Anthony Wayne Orr
- Department of Pathology and Translational Pathobiology, Louisiana State University Health - Shreveport, Shreveport, LA, United States.,Department of Cell Biology and Anatomy, LSU Health - Shreveport, Shreveport, LA, United States.,Department of Molecular & Cellular Physiology, LSU Health - Shreveport, Shreveport, LA, United States
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5
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Topical Application of Fibroblast Growth Factor 10-PLGA Microsphere Accelerates Wound Healing via Inhibition of ER Stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:8586314. [PMID: 33354279 PMCID: PMC7735840 DOI: 10.1155/2020/8586314] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/20/2020] [Accepted: 11/09/2020] [Indexed: 12/16/2022]
Abstract
There is a high incidence of acute and chronic skin defects caused by various reasons in clinically practice. The repair and functional reconstruction of skin defects have become a major clinical problem, which needs to be solved urgently. Previous studies have shown that fibroblast growth factor 10 (FGF10) plays a functional role in promoting the proliferation, migration, and differentiation of epithelial cells. However, little is known about the effect of FGF10 on the recovery process after skin damage. In this study, we found that the expression of endogenous FGF10 was increased during wound healing. We prepared FGF10-loaded poly(lactic-co-glycolic acid) (FGF10-PLGA) microspheres, and it could sustain release of FGF10 both in vitro and in vivo, accelerating wound healing. Further analysis revealed that compared with FGF10 alone, FGF10-PLGA microspheres significantly improved granulation formation, collagen synthesis, cell proliferation, and blood vessel density. In the meantime, we found that FGF10-PLGA microspheres inhibited the expression of endoplasmic reticulum (ER) stress markers. Notably, activating ER stress with tunicamycin (TM) reduced therapeutic effects of FGF10-PLGA microspheres in wound healing, whereas inhibition of ER stress with 4-phenyl butyric acid (4-PBA) improved the function of FGF10-PLGA microspheres. Taken together, this study indicates that FGF10-PLGA microspheres accelerate wound healing presumably through modulating ER stress.
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6
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Sulfated glycolipid PG545 induces endoplasmic reticulum stress and augments autophagic flux by enhancing anticancer chemotherapy efficacy in endometrial cancer. Biochem Pharmacol 2020; 178:114003. [PMID: 32360360 DOI: 10.1016/j.bcp.2020.114003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 04/24/2020] [Indexed: 12/31/2022]
Abstract
The sulfated glycolipid PG545 shows promising antitumor activity in various cancers. This study was conducted to explore the effects and the mechanism of PG545 action in endometrial cancer (EC). PG545 exhibited strong synergy as assessed by the Chou-Talalay-Method in vitro when combined with cisplatin, or paclitaxel in both type I (Hec1B) and type II (ARK2) EC cell lines. While PG545 showed antitumor activity as monotherapy, a combination of PG545 with paclitaxel and cisplatin was highly effective in reducing the tumor burden and significantly prolonged survival of both Hec1B and ARK2 xenograft bearing mice. Mechanistically, PG545 elicits ER stress as an early response with resultant induction of autophagy. Our data demonstrated an increase in pERK, Bip/Grp78, IRE1α, Calnexin and CHOP/GADD153 within 6-24 hrs of PG545 treatment in EC cells. In parallel, PG545 also blocked FGF2 and HB-EGF mediated signaling in EC cells. Moreover, melatonin-mediated ER stress inhibition reduced PG545-mediated autophagy and PG545 in combination with cisplatin further heightened this stress response. Collectively these data indicate that PG545 exhibits strong synergistic effects with chemotherapeutics in vitro and showed promising antitumor activity in vivo. Our preclinical data indicates that in future studies PG545 can be a useful adjunct to chemotherapy in endometrial cancer.
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7
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Wu S, Ma S, Yin X, Yi P, Liu J. An integrated PKD1-dependent signaling network amplifies IRE1 prosurvival signaling. J Biol Chem 2019; 294:11119-11130. [PMID: 31167779 DOI: 10.1074/jbc.ra118.003311] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 03/21/2019] [Indexed: 12/13/2022] Open
Abstract
Following the accumulation of improperly folded proteins in the endoplasmic reticulum (ER), a condition known as ER stress in this compartment triggers an adaptive signaling pathway referred to as the unfolded protein response (UPR). The UPR aims at restoring ER homeostasis; if the ER stress cannot be resolved, apoptosis is triggered. However, the mechanisms responsible for regulating the balance between cell life and death decisions that occur after exposure to ER stress remain unclear. Protein kinase D1 (PKD1) has been reported to initiate protective signaling against oxidative stress or ischemia, two conditions that impinge on the induction of ER stress. In addition, the high levels of expression of PKD1, observed in highly proliferative cancers and tumors with poor prognosis, contribute to enhanced resistance to chemotherapy. In this study, we show that the ER stress inducers tunicamycin and thapsigargin lead to the activation of PKD1 in human prostate cancer PC-3 cells and in hepatoma HepG2 cells through a PKCδ-dependent mechanism. Moreover, our data indicate that PKD1 is required for the stabilization of inositol-requiring enzyme 1 (IRE1) and the subsequent regulation of its activity. PKD1 activation contributes to the phosphorylation of mitogen-activated protein kinase phosphatase 1, resulting in decreased IRE1-mediated c-Jun N-terminal kinase activation. This study unveils the existence of a novel PKD1-dependent prosurvival mechanism that is activated upon ER stress and selectively enhances IRE1 prosurvival signaling.
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Affiliation(s)
- Shiyong Wu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, China
| | - Shumin Ma
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, China
| | - Xueliang Yin
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, China
| | - Ping Yi
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, China
| | - Jianfeng Liu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, China
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8
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Yin J, Wu K, Ma Q, Dong H, Zhu Y, Hu L, Kong X. Revisiting Non-BRCA1/2 Familial Whole Exome Sequencing Datasets Implicates NCK1 as a Cancer Gene. Front Genet 2019; 10:527. [PMID: 31214250 PMCID: PMC6557995 DOI: 10.3389/fgene.2019.00527] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 05/14/2019] [Indexed: 12/14/2022] Open
Abstract
Through linkage and candidate gene screening, many breast cancer (BC) predisposition genes have been identified in the past 20 years. However, the majority of genetic risks that contribute to familial BC remains undetermined. In this study, we revisited whole exome sequencing datasets from non-BRCA1/2 familial BC patients, to search for novel BC predisposition genes. Based on the infinite mutation model, we supposed that rare non-silent variants that cooccurred between familial and TCGA-germline datasets, might play a predisposition contributing role. In our analysis, we not only identified novel potential pathogenic variants from known cancer predisposition genes, such as MRE11, CTR9 but also identified novel candidate predisposition genes, such as NCK1. According to the TCGA mRNA expression dataset of BC, NCK1 was significantly upregulated in basal-like subtypes and downregulated in luminal subtypes. In vitro, NCK1 mutants (D73H and R42Q) transfected MCF7 cell lines, which attributed to the luminal subtype, were much more viable and invasive than the wild type. On the other side, our results also showed that overall survival and disease-free survival of patients with NCK1 variations might be dependent on the genomic context. In conclusion, genetic heterogeneity exists among non-BRCA1/2 BC pedigrees and NCK1 could be a novel BC predisposition gene.
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Affiliation(s)
- Jie Yin
- State Key Laboratory of Medical Genomics, Institute of Health Sciences, Shanghai Jiao Tong University School of Medicine and Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Kai Wu
- State Key Laboratory of Medical Genomics, Institute of Health Sciences, Shanghai Jiao Tong University School of Medicine and Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Qingyang Ma
- State Key Laboratory of Medical Genomics, Institute of Health Sciences, Shanghai Jiao Tong University School of Medicine and Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Hang Dong
- State Key Laboratory of Medical Genomics, Institute of Health Sciences, Shanghai Jiao Tong University School of Medicine and Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yufei Zhu
- State Key Laboratory of Medical Genomics, Institute of Health Sciences, Shanghai Jiao Tong University School of Medicine and Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Landian Hu
- State Key Laboratory of Medical Genomics, Institute of Health Sciences, Shanghai Jiao Tong University School of Medicine and Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Xiangyin Kong
- State Key Laboratory of Medical Genomics, Institute of Health Sciences, Shanghai Jiao Tong University School of Medicine and Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
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9
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Ahmed M, Legrand C, Yagüe Relimpio A, Beretta CA, Muschko A, Wegehingel S, Müller HM, Sehr P, Will DW, Lewis JD, Nickel W. A time-resolved live cell imaging assay to identify small molecule inhibitors of FGF2 signaling. FEBS Lett 2019; 593:2162-2176. [PMID: 31135968 DOI: 10.1002/1873-3468.13462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/18/2019] [Accepted: 05/24/2019] [Indexed: 11/10/2022]
Abstract
Fibroblast growth factor 2 (FGF2) is a cell survival factor with crucial functions in tumor-induced angiogenesis. Here, we describe a novel time-resolved FGF2 signaling assay based upon live cell imaging of neuroblastoma cells. To validate this system, we tested 8960 small molecules for inhibition of FGF2 signaling with kinetic resolution. Hit compounds were validated in dose-response experiments for FGF2 signaling, FGF receptor antagonism, downstream ERK phosphorylation and FGF2-dependent chemoresistance in a cellular leukemia model system. The new screening system for FGF2 signaling inhibitors has unique features, deselecting compounds with pleiotropic effects on cell proliferation and, along with the experimental pipeline reported, great potential for the discovery of new classes of FGF2 signaling inhibitors that block FGF2 dependent tumor cell survival.
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Affiliation(s)
| | | | | | - Carlo A Beretta
- CellNetworks Math-Clinic Core Facility, BioQuant, Heidelberg University, Germany
| | | | | | | | - Peter Sehr
- European Molecular Biology Laboratory, Heidelberg, Germany
| | - David W Will
- European Molecular Biology Laboratory, Heidelberg, Germany
| | - Joe D Lewis
- European Molecular Biology Laboratory, Heidelberg, Germany
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10
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Low-concentration HCP1 inhibits apoptosis in vascular endothelial cells. Biochem Biophys Res Commun 2019; 511:92-98. [DOI: 10.1016/j.bbrc.2019.02.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 02/01/2019] [Indexed: 01/21/2023]
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11
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Deshpande RP, Panigrahi M, Y B V K CS, Babu PP. Expression and clinicopathological significance of Nck1 in human astrocytoma progression. Int J Neurosci 2018; 129:171-178. [PMID: 30146921 DOI: 10.1080/00207454.2018.1516655] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
OBJECTIVES Astrocytoma represents most noted malignancy of the brain. The overall survival rate of patients with progressive form remains dismal despite of the present clinical advancements. Search for biomarkers can open new avenues of therapeutic measures to curb the progressive astrocytic tumors. Nck1 is reported to be involved in actin cytoskeleton rearrangement and neuronal migration. Here, we have determined prognostic importance of Nck1 protein in astrocytoma progression. Temporal lobe epilepsy tissues were used as control. METHODS Real time PCR was used to analyze Nck1 transcript expression while western blotting and immunohistochemistry techniques were used to study expression on translational levels. Protein expression in western blots was categorized as Nck1 positive and Nck1 negative. We further seen the prognostic significance of Nck1 in 246 glioblastoma tissue samples as visible from the TCGA database. RESULTS We find Nck1 RNA and protein was upregulated significantly in high grade tissues as compared to low grade and control tissue samples (p < 0.05). Logrank test and Kaplan-Meier analysis signified the use of Nck1 as independent prognostic marker for astrocytoma progression and its expression levels were correlated with poor survival in surgically resected human tissue samples (Chi square = 10.7, p = 0.001). Further, glioblastoma was noticed to be predominant at frontal and temporal lobe. CONCLUSION On account of it's over expression, Nck1 appears as possible biomarker for astrocytoma progression and may serve as an important therapeutic target. Prominent origin of glioblastoma at frontal and temporal lobe suggests possible involvement of tissue specific developmental or transcriptional factors in origin of tumors.
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Affiliation(s)
- Ravindra Pramod Deshpande
- a Department of Biotechnology and Bioinformatics, School of Life Sciences , University of Hyderabad , Hyderabad , Telangana State , India
| | - Manas Panigrahi
- b Krishna Institute of Medical Sciences , Secunderabad , Telangana State , India
| | | | - Phanithi Prakash Babu
- a Department of Biotechnology and Bioinformatics, School of Life Sciences , University of Hyderabad , Hyderabad , Telangana State , India
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12
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An Update on Sexual Transmission of Zika Virus. Pathogens 2018; 7:pathogens7030066. [PMID: 30081445 PMCID: PMC6161238 DOI: 10.3390/pathogens7030066] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 07/02/2018] [Accepted: 08/01/2018] [Indexed: 02/06/2023] Open
Abstract
Zika virus (ZIKV) is a single-stranded RNA virus belonging to the arthropod-borne flaviviruses (arboviruses) which are mainly transmitted by blood-sucking mosquitoes of the genus Aedes. ZIKV infection has been known to be rather asymptomatic or presented as febrile self-limited disease; however, during the last decade the manifestation of ZIKV infection has been associated with a variety of neuroimmunological disorders including Guillain–Barré syndrome, microcephaly and other central nervous system abnormalities. More recently, there is accumulating evidence about sexual transmission of ZIKV, a trait that has never been observed in any other mosquito-borne flavivirus before. This article reviews the latest information regarding the latter and emerging role of ZIKV, focusing on the consequences of ZIKV infection on the male reproductive system and the epidemiology of human-to-human sexual transmission.
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13
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Kumar A, Jovel J, Lopez-Orozco J, Limonta D, Airo AM, Hou S, Stryapunina I, Fibke C, Moore RB, Hobman TC. Human Sertoli cells support high levels of Zika virus replication and persistence. Sci Rep 2018; 8:5477. [PMID: 29615760 PMCID: PMC5883016 DOI: 10.1038/s41598-018-23899-x] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 03/20/2018] [Indexed: 02/07/2023] Open
Abstract
Zika virus is a teratogenic mosquito-transmitted flavivirus that is associated with birth defects in newborns and Guillain–Barré syndrome in adults. The virus can also be sexually transmitted, but currently, very little is known about the cell types supporting virus replication and persistence in human testes. Using primary cell cultures, we observed that Sertoli but not Leydig cells are highly susceptible to Zika virus infection, a process that is dependent on the TAM family receptor Axl. In cell culture, Sertoli cells could be productively infected with Zika virus for at least 6-weeks. Infection of Sertoli cells resulted in dramatic changes to the transcriptional profile of these cells. The most upregulated mRNA in infected cells was basic fibroblast growth factor (FGF2), a cytokine that was found to enhance Zika virus replication and support viral persistence. Together these findings provide key insights into understanding how Zika virus persists in the male reproductive tract and in turn may aid in developing antiviral therapies or strategies to minimize sexual transmission of this pathogen.
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Affiliation(s)
- Anil Kumar
- Departments of Cell Biology, University of Alberta, Edmonton, Canada
| | - Juan Jovel
- Departments of Medicine, University of Alberta, Edmonton, Canada
| | | | - Daniel Limonta
- Departments of Cell Biology, University of Alberta, Edmonton, Canada
| | - Adriana M Airo
- Departments of Medical Microbiology & Immunology, University of Alberta, Edmonton, Canada
| | - Shangmei Hou
- Departments of Cell Biology, University of Alberta, Edmonton, Canada
| | - Iryna Stryapunina
- Departments of Cell Biology, University of Alberta, Edmonton, Canada
| | - Chad Fibke
- Departments of Medical Microbiology & Immunology, University of Alberta, Edmonton, Canada
| | - Ronald B Moore
- Departments of Surgery, University of Alberta, Edmonton, Canada
| | - Tom C Hobman
- Departments of Cell Biology, University of Alberta, Edmonton, Canada. .,Departments of Medical Microbiology & Immunology, University of Alberta, Edmonton, Canada. .,Li Ka Shing Institute of Virology, Edmonton, Canada. .,Women & Children's Health Research Institute, Edmonton, Canada.
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14
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Minchenko OH, Bashta YM, Minchenko DO, Ratushna OO. Glucose tolerance in obese men is associated with dysregulation of some angiogenesis-related gene expressions in subcutaneous adipose tissue. ACTA ACUST UNITED AC 2018. [PMID: 29537219 DOI: 10.15407/fz62.02.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Obesity and its metabolic complications are one of the most profound public health problems and result from interactions between genes and environmental. The development of obesity is tightly connected with dysregulation of intrinsic gene expression mechanisms controlling majority of metabolic processes, which are essential for regulation many physiological functions, including insulin sensitivity, cellular proliferation and angiogenesis. Our objective was to evaluate if expression of angiogenesis related genes VEGF-A, CYR61, PDGFC, FGF1, FGF2, FGFR2, FGFRL1, E2F8, BAI2, HIF1A, and EPAS1 at mRNA level in adipose tissue could participate in the development of obesity and metabolic complications. We have shown that expression level of VEGF-A, PDGFC, FGF2, and FGFRL1 genes is decreased in adipose tissue of obese men with normal glucose tolerance (NGT) versus a group of control subjects. At the same time, in this group of obese individuals a significant up-regulation of CYR61, FGF1, FGFR2, E2F8, BAI2, and HIF1A gene expressions was observed. Impaired glucose tolerance (IGT) in obese patients associates with down-regulation of CYR61 and FGFR2 mRNA and up-regulations of E2F8, FGF1, FGF2, VEGF-A and its splice variant 189 mRNA expressions in adipose tissue versus obese (NGT) individuals. Thus, our data demonstrate that the expression of almost all studied genes is affected in subcutaneous adipose tissue of obese individuals with NGT and that glucose intolerance is associated with gene-specific changes in the expression of E2F8, FGF1, FGF2, VEGF-A, CYR61 and FGFR2 mRNAs. The data presented here provides evidence that VEGF-A, CYR61, PDGFC, FGF1, FGF2, FGFR2, FGFRL1, E2F8, BAI2, and HIF1A genes are possibly involved in the development of obesity and its complications.
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MESH Headings
- Adult
- Basic Helix-Loop-Helix Transcription Factors/genetics
- Basic Helix-Loop-Helix Transcription Factors/metabolism
- Case-Control Studies
- Cysteine-Rich Protein 61/genetics
- Cysteine-Rich Protein 61/metabolism
- Fibroblast Growth Factor 1/genetics
- Fibroblast Growth Factor 1/metabolism
- Fibroblast Growth Factor 2/genetics
- Fibroblast Growth Factor 2/metabolism
- Gene Expression Regulation
- Glucose/metabolism
- Glucose Intolerance/genetics
- Glucose Intolerance/metabolism
- Glucose Intolerance/pathology
- Glucose Tolerance Test
- Humans
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Insulin/metabolism
- Insulin Resistance
- Lymphokines/genetics
- Lymphokines/metabolism
- Male
- Middle Aged
- Neovascularization, Pathologic/genetics
- Neovascularization, Pathologic/metabolism
- Neovascularization, Pathologic/pathology
- Nerve Tissue Proteins/genetics
- Nerve Tissue Proteins/metabolism
- Obesity/genetics
- Obesity/metabolism
- Obesity/pathology
- Platelet-Derived Growth Factor/genetics
- Platelet-Derived Growth Factor/metabolism
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Receptor, Fibroblast Growth Factor, Type 2/genetics
- Receptor, Fibroblast Growth Factor, Type 2/metabolism
- Receptor, Fibroblast Growth Factor, Type 5/genetics
- Receptor, Fibroblast Growth Factor, Type 5/metabolism
- Repressor Proteins/genetics
- Repressor Proteins/metabolism
- Signal Transduction
- Subcutaneous Fat/blood supply
- Subcutaneous Fat/metabolism
- Subcutaneous Fat/pathology
- Vascular Endothelial Growth Factor A/genetics
- Vascular Endothelial Growth Factor A/metabolism
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15
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PI3K/Akt/FoxO3a signaling mediates cardioprotection of FGF-2 against hydrogen peroxide-induced apoptosis in H9c2 cells. Mol Cell Biochem 2016; 414:57-66. [DOI: 10.1007/s11010-016-2658-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 01/30/2016] [Indexed: 12/20/2022]
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16
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Cancer Microenvironment and Endoplasmic Reticulum Stress Response. Mediators Inflamm 2015; 2015:417281. [PMID: 26491226 PMCID: PMC4600498 DOI: 10.1155/2015/417281] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 04/21/2015] [Accepted: 04/24/2015] [Indexed: 12/17/2022] Open
Abstract
Different stressful conditions such as hypoxia, nutrient deprivation, pH changes, or reduced vascularization, potentially able to act as growth-limiting factors for tumor cells, activate the unfolded protein response (UPR). UPR is therefore involved in tumor growth and adaptation to severe environments and is generally cytoprotective in cancer. The present review describes the molecular mechanisms underlying UPR and able to promote survival and proliferation in cancer. The critical role of UPR activation in tumor growth promotion is discussed in detail for a few paradigmatic tumors such as prostate cancer and melanoma.
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17
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Luan Q, Jin L, Jiang CC, Tay KH, Lai F, Liu XY, Liu YL, Guo ST, Li CY, Yan XG, Tseng HY, Zhang XD. RIPK1 regulates survival of human melanoma cells upon endoplasmic reticulum stress through autophagy. Autophagy 2015; 11:975-94. [PMID: 26018731 PMCID: PMC4590596 DOI: 10.1080/15548627.2015.1049800] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 04/28/2015] [Accepted: 05/05/2015] [Indexed: 12/11/2022] Open
Abstract
Although RIPK1 (receptor [TNFRSF]-interacting protein kinase 1) is emerging as a critical determinant of cell fate in response to cellular stress resulting from activation of death receptors and DNA damage, its potential role in cell response to endoplasmic reticulum (ER) stress remains undefined. Here we report that RIPK1 functions as an important prosurvival mechanism in melanoma cells undergoing pharmacological ER stress induced by tunicamycin (TM) or thapsigargin (TG) through activation of autophagy. While treatment with TM or TG upregulated RIPK1 and triggered autophagy in melanoma cells, knockdown of RIPK1 inhibited autophagy and rendered the cells sensitive to killing by TM or TG, recapitulating the effect of inhibition of autophagy. Consistently, overexpression of RIPK1 enhanced induction of autophagy and conferred resistance of melanoma cells to TM- or TG-induced cell death. Activation of MAPK8/JNK1 or MAPK9/JNK2, which phosphorylated BCL2L11/BIM leading to its dissociation from BECN1/Beclin 1, was involved in TM- or TG-induced, RIPK1-mediated activation of autophagy; whereas, activation of the transcription factor HSF1 (heat shock factor protein 1) downstream of the ERN1/IRE1-XBP1 axis of the unfolded protein response was responsible for the increase in RIPK1 in melanoma cells undergoing pharmacological ER stress. Collectively, these results identify upregulation of RIPK1 as an important resistance mechanism of melanoma cells to TM- or TG-induced ER stress by protecting against cell death through activation of autophagy, and suggest that targeting the autophagy-activating mechanism of RIPK1 may be a useful strategy to enhance sensitivity of melanoma cells to therapeutic agents that induce ER stress.
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Key Words
- 3-MA, 3-methyladenine
- AMPK, AMP-activated protein kinase
- ATF6, activating transcription factor 6
- Baf A1, bafilomycin A1
- CAMKK2, calcium/calmodulin-dependent protein kinase kinase 2: β
- EIF2AK3/PERK, eukaryotic translation initiation factor 2-α kinase 3
- ER, endoplasmic reticulum
- ERN1/IRE1, endoplasmic reticulum to nucleus signaling 1
- HSF1, heat shock transcription factor 1
- HSPA5, heat shock 70kDa protein 5 (glucose-regulated protein: 78kDa)
- MAP2K1/MEK1, mitogen-activated protein kinase kinase 1
- MAPK, mitogen-activated protein kinase
- MAPK1/ERK2, mitogen-activated protein kinase 1
- MAPK11/p38β, mitogen-activated protein kinase 11
- MAPK12/p38γ, mitogen-activated protein kinase 12
- MAPK13/p38δ, mitogen-activated protein kinase 13
- MAPK14/p38α, mitogen-activated protein kinase 14
- MAPK3/ERK1, mitogen-activated protein kinase 3
- MAPK8/JNK1, mitogen-activated protein kinase 8
- MAPK9/JNK2, mitogen-activated protein kinase 9
- NFKB1, nuclear factor of kappa light polypeptide gene enhancer in B-cells 1
- PRKAA1, protein kinase AMP-activated: α 1 catalytic subunit
- RIPK1
- RIPK1, receptor (TNFRSF)-interacting protein kinase 1
- SQSTM1/p62, sequestosome 1
- TG, thapsigargin
- TM, tunicamycin
- TNFRSF1A/TNFR1, tumor necrosis factor receptor superfamily: member 1A
- UPR, unfolded protein response
- XBP1, x-box binding protein 1
- autophagy
- cell death
- endoplasmic reticulum stress
- melanoma
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Affiliation(s)
- Qi Luan
- School of Biomedical Sciences and Pharmacy; University of Newcastle; NSW, Australia
- Department of Dermatology; Xijing Hospital; Fourth Military Medical University; Xi'an; China
| | - Lei Jin
- School of Medicine and Public Health; University of Newcastle; NSW, Australia
| | - Chen Chen Jiang
- School of Medicine and Public Health; University of Newcastle; NSW, Australia
| | - Kwang Hong Tay
- School of Medicine and Public Health; University of Newcastle; NSW, Australia
| | - Fritz Lai
- School of Medicine and Public Health; University of Newcastle; NSW, Australia
| | - Xiao Ying Liu
- School of Biomedical Sciences and Pharmacy; University of Newcastle; NSW, Australia
| | - Yi Lun Liu
- School of Biomedical Sciences and Pharmacy; University of Newcastle; NSW, Australia
| | - Su Tang Guo
- School of Biomedical Sciences and Pharmacy; University of Newcastle; NSW, Australia
| | - Chun Ying Li
- Department of Dermatology; Xijing Hospital; Fourth Military Medical University; Xi'an; China
| | - Xu Guang Yan
- School of Biomedical Sciences and Pharmacy; University of Newcastle; NSW, Australia
| | - Hsin-Yi Tseng
- School of Biomedical Sciences and Pharmacy; University of Newcastle; NSW, Australia
| | - Xu Dong Zhang
- School of Biomedical Sciences and Pharmacy; University of Newcastle; NSW, Australia
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18
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Manié SN, Lebeau J, Chevet E. Cellular mechanisms of endoplasmic reticulum stress signaling in health and disease. 3. Orchestrating the unfolded protein response in oncogenesis: an update. Am J Physiol Cell Physiol 2014; 307:C901-7. [PMID: 25186011 DOI: 10.1152/ajpcell.00292.2014] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The endoplasmic reticulum (ER)-induced unfolded protein response (UPR) is an adaptive mechanism that is activated upon accumulation of misfolded proteins in the ER and aims at restoring ER homeostasis. In the past 10 years, the UPR has emerged as an important actor in the different phases of tumor growth. The UPR is transduced by three major ER resident stress sensors, which are protein kinase RNA-like ER kinase (PERK), activating transcription factor 6 (ATF6), and inositol-requiring enzyme-1 (IRE1). The signaling pathways elicited by those stress sensors have connections with metabolic pathways and with other plasma membrane receptor signaling networks. As such, the ER has an essential position as a signal integrator in the cell and is instrumental in the different phases of tumor progression. Herein, we describe and discuss the characteristics of an integrated signaling network that might condition the UPR biological outputs in a tissue- or stress-dependent manner. We discuss these issues in the context of the pathophysiological roles of UPR signaling in cancers.
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Affiliation(s)
- Serge N Manié
- University of Lyon, Lyon, France, and UMR CNRS 5286 - INSERM 1052 - University of Lyon, Cancer Research Center of Lyon, Team ER Stress and Tumorigenesis, Lyon, France;
| | - Justine Lebeau
- University of Lyon, Lyon, France, and UMR CNRS 5286 - INSERM 1052 - University of Lyon, Cancer Research Center of Lyon, Team ER Stress and Tumorigenesis, Lyon, France
| | - Eric Chevet
- Inserm U1053, Team Endoplasmic Reticulum Stress and Cancer, Université de Bordeaux, Bordeaux, France; and Centre Régional de Lutte Contre le Cancer Eugène Marquis, Rennes, France
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19
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Jiang S, Yan C, Fang QC, Shao ML, Zhang YL, Liu Y, Deng YP, Shan B, Liu JQ, Li HT, Yang L, Zhou J, Dai Z, Liu Y, Jia WP. Fibroblast growth factor 21 is regulated by the IRE1α-XBP1 branch of the unfolded protein response and counteracts endoplasmic reticulum stress-induced hepatic steatosis. J Biol Chem 2014; 289:29751-65. [PMID: 25170079 DOI: 10.1074/jbc.m114.565960] [Citation(s) in RCA: 133] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Endoplasmic reticulum (ER) stress activates the adaptive unfolded protein response (UPR) and represents a critical mechanism that underlies metabolic dysfunctions. Fibroblast growth factor 21 (FGF21), a hormone that is predominantly secreted by the liver, exerts a broad range of effects upon the metabolism of carbohydrates and lipids. Although increased circulating levels of FGF21 have been documented in animal models and human subjects with obesity and nonalcoholic fatty liver disease, the functional interconnections between metabolic ER stress and FGF21 are incompletely understood. Here, we report that increased ER stress along with the simultaneous elevation of FGF21 expression were associated with the occurrence of nonalcoholic fatty liver disease both in diet-induced obese mice and human patients. Intraperitoneal administration of the ER stressor tunicamycin in mice resulted in hepatic steatosis, accompanied by activation of the three canonical UPR branches and increased the expression of FGF21. Furthermore, the IRE1α-XBP1 pathway of the UPR could directly activate the transcriptional expression of Fgf21. Administration of recombinant FGF21 in mice alleviated tunicamycin-induced liver steatosis, in parallel with reduced eIF2α-ATF4-CHOP signaling. Taken together, these results suggest that FGF21 is an integral physiological component of the cellular UPR program, which exerts beneficial feedback effects upon lipid metabolism through counteracting ER stress.
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Affiliation(s)
- Shan Jiang
- From the Shanghai Key Laboratory of Diabetes Mellitus, Department of Endocrinology and Metabolism, Shanghai Diabetes Institute, Shanghai Clinical Center for Diabetes, and Shanghai Key Clinical Center for Metabolic Disease, Shanghai JiaoTong University Affiliated Sixth People's Hospital, Shanghai 200233
| | - Cheng Yan
- the Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, and
| | - Qi-chen Fang
- From the Shanghai Key Laboratory of Diabetes Mellitus, Department of Endocrinology and Metabolism, Shanghai Diabetes Institute, Shanghai Clinical Center for Diabetes, and Shanghai Key Clinical Center for Metabolic Disease, Shanghai JiaoTong University Affiliated Sixth People's Hospital, Shanghai 200233
| | - Meng-le Shao
- the Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, and
| | - Yong-liang Zhang
- the Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, and
| | - Yang Liu
- the Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, and
| | - Yi-ping Deng
- the Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, and
| | - Bo Shan
- the Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, and
| | - Jing-qi Liu
- the Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, and
| | - Hua-ting Li
- From the Shanghai Key Laboratory of Diabetes Mellitus, Department of Endocrinology and Metabolism, Shanghai Diabetes Institute, Shanghai Clinical Center for Diabetes, and Shanghai Key Clinical Center for Metabolic Disease, Shanghai JiaoTong University Affiliated Sixth People's Hospital, Shanghai 200233
| | - Liu Yang
- the Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, and
| | - Jian Zhou
- the Department of Liver Surgery, Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Zhi Dai
- the Department of Liver Surgery, Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Yong Liu
- the Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, and
| | - Wei-ping Jia
- From the Shanghai Key Laboratory of Diabetes Mellitus, Department of Endocrinology and Metabolism, Shanghai Diabetes Institute, Shanghai Clinical Center for Diabetes, and Shanghai Key Clinical Center for Metabolic Disease, Shanghai JiaoTong University Affiliated Sixth People's Hospital, Shanghai 200233,
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20
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Mardones P, Martínez G, Hetz C. Control of systemic proteostasis by the nervous system. Trends Cell Biol 2014; 25:1-10. [PMID: 25174273 DOI: 10.1016/j.tcb.2014.08.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 08/01/2014] [Accepted: 08/04/2014] [Indexed: 10/24/2022]
Abstract
Maintenance of organismal homeostasis depends on the integration of intracellular and external signals, involving the ability to detect molecular perturbations. An explosion of studies in model organisms indicates the occurrence of dynamic communication between alarm pathways engaged by protein-folding stress in neurons that activate adaptive programs in peripheral organs to control cellular proteostasis. Here we review emerging concepts that highlight the contribution of the proteostasis network to the regulation of several aspects of animal physiology through central integration of signals spanning multiple tissues and organs. These recent findings uncover a new layer of functional interrelation between cells that handle and orchestrate the global maintenance of the proteome at the organismal level in a cell-nonautonomous manner.
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Affiliation(s)
- Pablo Mardones
- Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile; Program of Cellular and Molecular Biology, Center for Molecular Studies of the Cell, Institute of Biomedical Sciences, University of Chile, Santiago, Chile
| | - Gabriela Martínez
- Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile; Program of Cellular and Molecular Biology, Center for Molecular Studies of the Cell, Institute of Biomedical Sciences, University of Chile, Santiago, Chile
| | - Claudio Hetz
- Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile; Program of Cellular and Molecular Biology, Center for Molecular Studies of the Cell, Institute of Biomedical Sciences, University of Chile, Santiago, Chile; Neurounion Biomedical Foundation, CENPAR, Santiago, Chile; Department of Immunology and Infectious diseases, Harvard School of Public Health, Boston, MA, USA.
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21
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Mukherjee C, Bakthavachalu B, Schoenberg DR. The cytoplasmic capping complex assembles on adapter protein nck1 bound to the proline-rich C-terminus of Mammalian capping enzyme. PLoS Biol 2014; 12:e1001933. [PMID: 25137142 PMCID: PMC4138027 DOI: 10.1371/journal.pbio.1001933] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 07/11/2014] [Indexed: 12/03/2022] Open
Abstract
mRNA capping and decapping requires a cytoplasmic complex to maintain and/or restore the 5′ cap on a subset of the mammalian transcriptome; Nck1, an SH2/SH3 adapter, creates a scaffold upon which the cytoplasmic capping complex forms. Cytoplasmic capping is catalyzed by a complex that contains capping enzyme (CE) and a kinase that converts RNA with a 5′-monophosphate end to a 5′ diphosphate for subsequent addition of guanylic acid (GMP). We identify the proline-rich C-terminus as a new domain of CE that is required for its participation in cytoplasmic capping, and show the cytoplasmic capping complex assembles on Nck1, an adapter protein with functions in translation and tyrosine kinase signaling. Binding is specific to Nck1 and is independent of RNA. We show by sedimentation and gel filtration that Nck1 and CE are together in a larger complex, that the complex can assemble in vitro on recombinant Nck1, and Nck1 knockdown disrupts the integrity of the complex. CE and the 5′ kinase are juxtaposed by binding to the adjacent domains of Nck1, and cap homeostasis is inhibited by Nck1 with inactivating mutations in each of these domains. These results identify a new domain of CE that is specific to its function in cytoplasmic capping, and a new role for Nck1 in regulating gene expression through its role as the scaffold for assembly of the cytoplasmic capping complex. We previously described a cyclical process of mRNA decapping and recapping termed “cap homeostasis.” Recapping is catalyzed by a complex of cytoplasmic proteins that includes the enzyme known to catalyze nuclear capping, and a kinase that converts RNA with a 5′-monophosphate end to a 5′-diphosphate capping substrate. The current study shows these two enzymatic activities are brought together in the cytoplasmic capping complex as both bind to adjacent domains of the adapter protein Nck1. Nck1 is a cytoplasmic protein best known for transducing receptor tyrosine kinase signaling. We identify a proline-rich sequence at the C-terminus of a human capping enzyme that is required for binding to Nck1, and we show that this interaction is required for integrity of the cytoplasmic capping complex. Depletion of Nck1 causes the cytoplasmic capping complex to dissociate. The inhibition of cytoplasmic capping by Nck1 with mutations in either the 5′-kinase or capping enzyme binding sites identified a functional role for Nck1 in cap homeostasis and a previously unknown function for Nck1 in cell biology.
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Affiliation(s)
- Chandrama Mukherjee
- Center for RNA Biology, The Ohio State University, Columbus, Ohio, United States of America
- Department of Molecular & Cellular Biochemistry, The Ohio State University, Columbus, Ohio, United States of America
| | - Baskar Bakthavachalu
- Center for RNA Biology, The Ohio State University, Columbus, Ohio, United States of America
- Department of Molecular & Cellular Biochemistry, The Ohio State University, Columbus, Ohio, United States of America
| | - Daniel R. Schoenberg
- Center for RNA Biology, The Ohio State University, Columbus, Ohio, United States of America
- Department of Molecular & Cellular Biochemistry, The Ohio State University, Columbus, Ohio, United States of America
- * E-mail:
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22
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Ziomek G, Cheraghi Zanjani P, Arman D, van Breemen C, Esfandiarei M. Calcium regulation in aortic smooth muscle cells during the initial phase of tunicamycin-induced endo/sarcoplasmic reticulum stress. Eur J Pharmacol 2014; 735:86-96. [DOI: 10.1016/j.ejphar.2014.04.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 03/31/2014] [Accepted: 04/06/2014] [Indexed: 02/07/2023]
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