1
|
Linnert J, Güler BE, Krzysko J, Wolfrum U. The adhesion G protein-coupled receptor VLGR1/ADGRV1 controls autophagy. Basic Clin Pharmacol Toxicol 2023; 133:313-330. [PMID: 37002809 DOI: 10.1111/bcpt.13869] [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: 01/03/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023]
Abstract
VLGR1/ADGRV1 (very large G protein-coupled receptor-1) is the largest known adhesion G protein-coupled receptor. Mutations in VLGR1/ADGRV1 cause Usher syndrome (USH), the most common form of hereditary deaf-blindness, and have been additionally linked to epilepsy. Although VLGR1/ADGRV1 is almost ubiquitously expressed, little is known about the subcellular function and signalling of the VLGR1 protein and thus about mechanisms underlying the development of diseases. Using affinity proteomics, we identified key components of autophagosomes as putative interacting proteins of VLGR1. In addition, whole transcriptome sequencing of the retinae of the Vlgr1/del7TM mouse model revealed altered expression profiles of gene-related autophagy. Monitoring autophagy by immunoblotting and immunocytochemistry of the LC3 and p62 as autophagy marker proteins revealed evoked autophagy in VLGR1-deficient hTERT-RPE1 cells and USH2C patient-derived fibroblasts. Our data demonstrate the molecular and functional interaction of VLGR1 with key components of the autophagy process and point to an essential role of VLGR1 in the regulation of autophagy at internal membranes. The close association of VLGR1 with autophagy helps to explain the pathomechanisms underlying human USH and epilepsy related to VLGR1 defects.
Collapse
Affiliation(s)
- Joshua Linnert
- Institute of Molecular Physiology, Molecular Cell Biology, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Baran E Güler
- Institute of Molecular Physiology, Molecular Cell Biology, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Jacek Krzysko
- Institute of Molecular Physiology, Molecular Cell Biology, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Uwe Wolfrum
- Institute of Molecular Physiology, Molecular Cell Biology, Johannes Gutenberg University Mainz, Mainz, Germany
| |
Collapse
|
2
|
ATM/IKK alpha axis regulates the crosstalk between autophagy and apoptosis in selenite-treated Jurkat cells. Chem Biol Interact 2022; 367:110178. [PMID: 36113632 DOI: 10.1016/j.cbi.2022.110178] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/06/2022] [Accepted: 09/08/2022] [Indexed: 11/22/2022]
Abstract
Selenium is an essential trace element. High dosage of selenite exhibits a great potential in treating leukemia. Previous study discovered selenite could promote leukemia cells apoptosis through inducing DNA damage and cell cycle arrest, while the switch mechanisms of these events and autophagy were still unclear. Current study discovered selenite promoted autophagy and apoptosis of leukemia Jurkat cells. In this process, DNA damage related ATM/IKK alpha axis was activated. This axis could stabilize pro-apoptotic P73, and promote autophagy through regulating NF-kappaB signaling pathway. Moreover, survivin-2B was also confirmed to be necessary for the ATM-induced nuclear location of IKK alpha, and therefore stood at the node position of apoptosis and autophagy cascades inside Jurkat cells. Finally, our in vivo experiments proved that selenite exhibited some anti-tumor effects on Jurkat cells-bearing mice. Moreover, alterations of ATM and IKK alpha expression observed in vivo were similar to that identified in vitro. Therefore, our findings had fully confirmed survivin-2B dependent activation of ATM/IKK alpha axis might be another crosstalk between autophagy and apoptosis of selenite-treated leukemia cells.
Collapse
|
3
|
Liu L, Liu T, Tao W, Liao N, Yan Q, Li L, Tan J, Shen W, Cheng H, Sun D. Flavonoids from Scutellaria barbata D. Don exert antitumor activity in colorectal cancer through inhibited autophagy and promoted apoptosis via ATF4/sestrin2 pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 99:154007. [PMID: 35259610 DOI: 10.1016/j.phymed.2022.154007] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 02/14/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
PURPOSE Scutellaria barbata D. Don (SB), mainly containing flavonoids, has been frequently used for cancer treatment. However, little research has investigated the antitumor activity of flavonoids from SB (FSB). The current study aimed to assess the antitumor effect of TFSB and elucidate the probable underlying mechanism in vivo and in vitro. STUDY DESIGN FSB was prepared, and its chemical composition was characterized by HPLC-MS. Colorectal HCT116 cells were treated with various concentration of FSB. The viability, proliferation, apoptosis, migration, and autophagy of HCT116 cells were studied, as were further confirmed in tumor xenografts. METHODS Cell viability and proliferation were respectively examined by MTT and EdU staining. ROS was determined with DCFH-DA, and cell apoptosis was detected using flow cytometry. Transwell and wound-healing assays were performed to evaluate cell migration. Immunofluorescence was employed to evaluate sestrin2 and ATF4 level. The protein expressions of p-AMPK, p-ULK1, p-mTOR, 4E-BP1, LC3-I/II, cleaved-caspase-3, Bax, and bcl-2 were investigated by western blot. ATF4 was overexpressed in experiments to explore the role of ATF4/sestrin2 pathway in FSB-mediated efficacy. RESULTS FSB clearly reduced the cell viability, promoted ROS generation, and induced apoptosis in HCT116 cells by down-regulated Bcl-2, and increased cleaved-caspase-3 and Bax. Furthermore, FSB significantly inhibited migration of colorectal cells in a dose-dependent manner. Further mechanistic study indicated that FSB upregulated p-mTOR protein level, and reduced p-AMPK, p-ULK1, p-mTOR, p-4E-BP1 and LC3-I/II expression, which were major autophagy-related genes. In addition, FSB could cause downregulation of endogenous mTOR inhibitor sestrin2 and ATF4 expression. Transient overexpression of ATF4 resulted in mTOR and sestrin2 inhibition, and significantly compromised the effects of FSB on apoptosis and autophagy in HCT116 cells. CONCLUSION Our results reveal, for the first time, that FSB exerts antitumor activity through autophagy inhibition and apoptosis induction via ATF4/sestrin2 pathway in colorectal cancer cells. Scutellaria barbata D. Don may have great potential in the application for the prevention and treatment of human colorectal cancer.
Collapse
Affiliation(s)
- Lianfang Liu
- Department of Medical Oncology, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou 215600, China; School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Tianya Liu
- School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Weiwei Tao
- School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Naikai Liao
- Department of Urology, the First Affiliated Hospital of Guangxi Medical University, Naning 530021, China
| | - Qiuying Yan
- Collaborative Innovation Center of Jiangsu Province of Cancer Prevention and Treatment of Chinese Medicine, Nanjing 210023, China
| | - Liu Li
- Collaborative Innovation Center of Jiangsu Province of Cancer Prevention and Treatment of Chinese Medicine, Nanjing 210023, China
| | - Jiani Tan
- Collaborative Innovation Center of Jiangsu Province of Cancer Prevention and Treatment of Chinese Medicine, Nanjing 210023, China
| | - Weixing Shen
- Collaborative Innovation Center of Jiangsu Province of Cancer Prevention and Treatment of Chinese Medicine, Nanjing 210023, China
| | - Haibo Cheng
- Collaborative Innovation Center of Jiangsu Province of Cancer Prevention and Treatment of Chinese Medicine, Nanjing 210023, China; Jiangsu Key Laboratory for TCM Formulae Research, Nanjing 210023, China.
| | - Dongdong Sun
- School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China; Collaborative Innovation Center of Jiangsu Province of Cancer Prevention and Treatment of Chinese Medicine, Nanjing 210023, China; Jiangsu Key Laboratory for TCM Formulae Research, Nanjing 210023, China.
| |
Collapse
|
4
|
Bian Y, Wang X, Zheng Z, Ren G, Zhu H, Qiao M, Li G. Resveratrol drives cancer cell senescence via enhancing p38MAPK and DLC1 expressions. Food Funct 2022; 13:3283-3293. [PMID: 35234761 DOI: 10.1039/d1fo02365a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pro-senescence therapy is a recently proposed anti-cancer strategy and has been shown to effectively inhibit cancer. Resveratrol is gaining attention for its cancer preventive and suppressive properties. The mechanisms of resveratrol in cancer suppression by inducing cancer cell senescence are unclear. Our results showed that resveratrol induced cell senescence along with an increase of SA-β-Gal activity and inhibition of colony formation in breast and lung cancer cells. The underlying mechanisms were that resveratrol induced ER-stress by increasing SIRT1 to promote p38MAPK expression and by reducing NO level to up-regulate DLC1 expression, and ER-stress further resulted in DNA damage and mitochondrial dysfunction, eventually leading to cancer cell senescence. Our findings on resveratrol's induction of cancer cell senescence via activating ER-stress through the SIRT1/p38MAPK and NO/DLC1 pathways provide a solid base for its clinical application and its preventive application as a food additive.
Collapse
Affiliation(s)
- Yan Bian
- Shandong Provincial Key Laboratory of Animal Resistant Biology, School of Life Sciences, Shandong Normal University, Jinan, 250014, Shandong, China.
| | - Xingjie Wang
- Shandong Provincial Key Laboratory of Animal Resistant Biology, School of Life Sciences, Shandong Normal University, Jinan, 250014, Shandong, China.
| | - Zhaodi Zheng
- Shandong Provincial Key Laboratory of Animal Resistant Biology, School of Life Sciences, Shandong Normal University, Jinan, 250014, Shandong, China.
| | - Guanghui Ren
- Shandong Provincial Key Laboratory of Animal Resistant Biology, School of Life Sciences, Shandong Normal University, Jinan, 250014, Shandong, China.
| | - Hongyan Zhu
- Shandong Provincial Key Laboratory of Animal Resistant Biology, School of Life Sciences, Shandong Normal University, Jinan, 250014, Shandong, China.
| | - Mengxue Qiao
- Shandong Provincial Key Laboratory of Animal Resistant Biology, School of Life Sciences, Shandong Normal University, Jinan, 250014, Shandong, China.
| | - Guorong Li
- Shandong Provincial Key Laboratory of Animal Resistant Biology, School of Life Sciences, Shandong Normal University, Jinan, 250014, Shandong, China.
| |
Collapse
|
5
|
Mal’tseva VN, Goltyaev MV, Novoselov SV, Varlamova EG. Effects of Sodium Selenite and Dithiothreitol on Expression of Endoplasmic Reticulum Selenoproteins and Apoptosis Markers in MSF7 Breast Adenocarcinoma Cells. Mol Biol 2022. [DOI: 10.1134/s0026893322010058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
6
|
de Klerk DJ, de Keijzer MJ, Dias LM, Heemskerk J, de Haan LR, Kleijn TG, Franchi LP, Heger M. Strategies for Improving Photodynamic Therapy Through Pharmacological Modulation of the Immediate Early Stress Response. Methods Mol Biol 2022; 2451:405-480. [PMID: 35505025 DOI: 10.1007/978-1-0716-2099-1_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Photodynamic therapy (PDT) is a minimally to noninvasive treatment modality that has emerged as a promising alternative to conventional cancer treatments. PDT induces hyperoxidative stress and disrupts cellular homeostasis in photosensitized cancer cells, resulting in cell death and ultimately removal of the tumor. However, various survival pathways can be activated in sublethally afflicted cancer cells following PDT. The acute stress response is one of the known survival pathways in PDT, which is activated by reactive oxygen species and signals via ASK-1 (directly) or via TNFR (indirectly). The acute stress response can activate various other survival pathways that may entail antioxidant, pro-inflammatory, angiogenic, and proteotoxic stress responses that culminate in the cancer cell's ability to cope with redox stress and oxidative damage. This review provides an overview of the immediate early stress response in the context of PDT, mechanisms of activation by PDT, and molecular intervention strategies aimed at inhibiting survival signaling and improving PDT outcome.
Collapse
Affiliation(s)
- Daniel J de Klerk
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Mark J de Keijzer
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Lionel M Dias
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Faculdade de Ciências da Saúde (FCS-UBI), Universidade da Beira Interior, Covilhã, Portugal
| | - Jordi Heemskerk
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
| | - Lianne R de Haan
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Tony G Kleijn
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Leonardo P Franchi
- Departamento de Bioquímica e Biologia Molecular, Instituto de Ciências Biológicas (ICB) 2, Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
- Faculty of Philosophy, Department of Chemistry, Center of Nanotechnology and Tissue Engineering-Photobiology and Photomedicine Research Group, Sciences, and Letters of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Michal Heger
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China.
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands.
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands.
| |
Collapse
|
7
|
Enhanced GRP78 protein expression via the IRE1α/ASK1/p38 MAPK pathway during As 2O 3-induced endoplasmic reticulum stress in BEAS-2B cells. Toxicology 2021; 462:152962. [PMID: 34560123 DOI: 10.1016/j.tox.2021.152962] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 09/01/2021] [Accepted: 09/18/2021] [Indexed: 11/20/2022]
Abstract
Inorganic arsenic is widely present in the environment. Exposure to moderate to high concentrations of arsenic from drinking water or air can cause various cancers and multisystem dysfunction. Glucose-regulated protein 78 (GRP78) is an endoplasmic reticulum (ER) stress sensor of unfolded protein response (UPR) under stress conditions and it enhances cell survival. The aim of this study is to investigate molecular mechanisms of arsenic-induced GRP78 expression in BEAS-2B cells model. We found that GRP78 protein expression was enhanced, while the level of GRP78 mRNA expression did not change under arsenic trioxide (As2O3)-induced ER stress condition in BEAS-2B cells. Cycloheximide, a protein synthesis inhibitor, completely inhibited As2O3-induced GRP78 protein expression. GRP78 mRNA expression was inhibited by actinomycin-D (Act-D). However, GRP78 protein expression was upregulated in the presence of Act-D under As2O3-induced ER stress condition. These data indicated that the upregulation of GRP78 protein under As2O3-induced UPR condition was possibly due to the increased biosynthesis of GRP78 protein. Moreover, both inositol-requiring enzyme 1α (IRE1α) RNase and kinase inhibitor KIRA6 and IRE1α kinase inhibitor APY29 completely inhibited As2O3-induced GRP78 protein expression and phosphorylation of JNK, ERK and p38 MAPK. Activation of apoptotic signaling kinase 1 (ASK1) is a downstream effector of IRE1α kinase. ASK1 inhibitor selonsertib and p38 MAPK inhibitor SB203580 partially inhibited As2O3-induced GRP78 protein expression, respectively. Our results suggested that As2O3 enhanced GRP78 protein expression in BEAS-2B cells via IRE1α kinase/ASK1/p38 MAPK signaling pathway. To our knowledge, this is the first report on illuminating the related mechanisms of increased GRP78 protein expression in As2O3-induced ER stress condition through a novel IRE1α pathway.
Collapse
|
8
|
Zhang J, Li C, Zhang L, Heng Y, Xu T, Zhang Y, Chen X, Hoffman RM, Jia L. Andrographolide Induces Noxa-Dependent Apoptosis by Transactivating ATF4 in Human Lung Adenocarcinoma Cells. Front Pharmacol 2021; 12:680589. [PMID: 33995110 PMCID: PMC8117100 DOI: 10.3389/fphar.2021.680589] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 04/09/2021] [Indexed: 12/21/2022] Open
Abstract
Lung adenocarcinoma is the most common pathological type of lung cancer with poor patient outcomes; therefore, developing novel therapeutic agents is critically needed. Andrographolide (AD), a major active component derived from the traditional Chinese medicine (TCM) Andrographis paniculate, is a potential antitumor drug, but the role of AD in lung adenocarcinoma remains poorly understood. In the present study, we demonstrated that AD inhibited the proliferation of broad-spectrum lung cancer cell lines in a dose-dependent manner. Meanwhile, we found that a high dose of AD induced Noxa-dependent apoptosis in human lung adenocarcinoma cells (A549 and H1299). Further studies revealed that Noxa was transcriptionally activated by activating transcription factor 4 (ATF4) in AD-induced apoptosis. Knockdown of ATF4 by small interfering RNA (siRNA) significantly diminished the transactivation of Noxa as well as the apoptotic population induced by AD. These results of the present study indicated that AD induced apoptosis of human lung adenocarcinoma cells by activating the ATF4/Noxa axis and supporting the development of AD as a promising candidate for the new era of chemotherapy.
Collapse
Affiliation(s)
- Junqian Zhang
- Cancer Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Chunjie Li
- Cancer Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Li Zhang
- Cancer Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yongqing Heng
- Cancer Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Tong Xu
- Cancer Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yunjing Zhang
- Cancer Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xihui Chen
- Cancer Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Robert M Hoffman
- Department of Surgery, University of California, San Diego, La Jolla, CA, United States.,Anticancer Inc., San Diego, CA, United States
| | - Lijun Jia
- Cancer Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| |
Collapse
|
9
|
Ni S, Xiong XB, Ni XY. MgCl2 promotes mouse mesenchymal stem cell osteogenic differentiation by activating the p38/Osx/Runx2 signaling pathway. Mol Med Rep 2020; 22:3904-3910. [PMID: 32901870 PMCID: PMC7533493 DOI: 10.3892/mmr.2020.11487] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 07/15/2020] [Indexed: 12/30/2022] Open
Abstract
Magnesium, an important inorganic mineral component in bones, enhances osteoblast adhesion and osteogenic gene expression. Mg2+‑containing hydroxyapatite promotes mouse mesenchymal stem cell (MMSC) osteogenic differentiation. In the present study, MMSCs were cultured in media containing different concentrations of MgCl2 (0 and 20 mM) for different time periods. Western blotting and reverse transcription‑quantitative PCR were performed to determine the expression levels of phosphorylated (p)‑p38 mitogen‑activated protein kinase (MAPK), the osteoblast‑specific transcription factor Osterix (Osx), runt‑related transcription factor 2 (Runx2), and p38 downstream genes, such as 27 kDa heat shock protein (hsp27), activating transcription factor 4 (Atf4), myocyte enhancer factor 2C (Mef2c) and CCAAT/enhancer‑binding protein homologous protein (Ddit3). The facilitatory effect of MgCl2 on MMSC osteogenic differentiation was assessed via Alizarin Red staining. The results suggested that MgCl2 increased p38 phosphorylation compared with the control group. Downstream genes of the p38 signaling pathway, including Osx and Runx2, as well as several osteogenesis‑associated downstream target genes, including Hsp27, Atf4, Ddit3 and Mef2c, were significantly upregulated in the Mg2+‑treated group compared with the control group. The increased osteogenic differentiation in the Mg2+‑treated group was significantly attenuated in MMSCs treated with SB203580, a specific inhibitor of the p38 signaling pathway. The results suggested that appropriate concentrations of MgCl2 promoted MMSC osteogenic differentiation via regulation of the p38/Osx/Runx2 signaling pathway.
Collapse
Affiliation(s)
- Su Ni
- Medical Research Center, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu 213003, P.R. China
| | - Xin-Bo Xiong
- Shenzhen Key Laboratory of Special Functional Materials, College of Materials, Shenzhen University, Shenzhen, Guangdong 518086, P.R. China
| | - Xin-Ye Ni
- Medical Research Center, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu 213003, P.R. China
| |
Collapse
|
10
|
Inhibition of SIRT1/2 upregulates HSPA5 acetylation and induces pro-survival autophagy via ATF4-DDIT4-mTORC1 axis in human lung cancer cells. Apoptosis 2020; 24:798-811. [PMID: 31321634 DOI: 10.1007/s10495-019-01559-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Sirtuins have emerged as a promising novel class of anti-cancer drug targets. Inhibition of SIRT1 and SIRT2 induces apoptosis in cancer cells and they play multifaceted roles in regulating autophagy. In the present study, we found that salermide, a SIRT1/2-specific inhibitor or small interfering RNAs (siRNAs) to block SIRT1/2 expression could induce autophagy in human NSCLC cells. Moreover, SIRT1/2 inhibition increased the expression levels of ATF4 and DDIT4 and downregulated p-RPS6KB1 and p-EIF4EBP1, two downstream molecules of mTORC1. Moreover, ATF4 or DDIT4 knockdown attenuated salermide-induced autophagy, suggesting that SIRT1/2 inhibition induced autophagy through the ATF4-DDIT4-mTORC1 axis. Mechanistically, SIRT1/2 inhibition led to HSPA5 acetylation and dissociation from EIF2AK3, leading to ER stress response and followed by upregulation of ATF4 and DDIT4, triggering autophagy. Silencing of the autophagic gene ATG5 in lung cancer cells resulted in increased apoptotic cell death induced by SIRT1/2 inhibition. Our data show that inhibition of SIRT1/2 induces pro-survival autophagy via acetylation of HSPA5 and subsequent activation of ATF4 and DDIT4 to inhibit the mTOR signaling pathway in NSCLC cells. These findings suggest that combinatorial treatment with SIRT1/2 inhibitors and pharmacological autophagy inhibitors is an effective therapeutic strategy for cancer therapy.
Collapse
|
11
|
Acevo-Rodríguez PS, Maldonado G, Castro-Obregón S, Hernández G. Autophagy Regulation by the Translation Machinery and Its Implications in Cancer. Front Oncol 2020; 10:322. [PMID: 32232004 PMCID: PMC7082396 DOI: 10.3389/fonc.2020.00322] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 02/24/2020] [Indexed: 12/14/2022] Open
Abstract
Various metabolic pathways and molecular processes in the cell act intertwined, and dysregulating the interplay between some of them may lead to cancer. It is only recently that defects in the translation process, i.e., the synthesis of proteins by the ribosome using a messenger (m)RNA as a template and translation factors, have begun to gain strong attention as a cause of autophagy dysregulation with effects in different maladies, including cancer. Autophagy is an evolutionarily conserved catabolic process that degrades cytoplasmic elements in lysosomes. It maintains cellular homeostasis and preserves cell viability under various stress conditions, which is crucial for all eukaryotic cells. In this review, we discuss recent advances shedding light on the crosstalk between the translation and the autophagy machineries and its impact on tumorigenesis. We also summarize how this interaction is being the target for novel therapies to treat cancer.
Collapse
Affiliation(s)
- Pilar Sarah Acevo-Rodríguez
- PSA-R and SC-O, División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Giovanna Maldonado
- Translation and Cancer Laboratory, Unit of Biomedical Research on Cancer, National Institute of Cancer (Instituto Nacional de Cancerología, INCan), Mexico City, Mexico
| | - Susana Castro-Obregón
- PSA-R and SC-O, División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Greco Hernández
- Translation and Cancer Laboratory, Unit of Biomedical Research on Cancer, National Institute of Cancer (Instituto Nacional de Cancerología, INCan), Mexico City, Mexico
| |
Collapse
|
12
|
Shi K, An J, Qian K, Zhao X, Li F, Ma X, Wang Y, Zhang Y. p53 controls the switch between autophagy and apoptosis through regulation of PLSCR1 in sodium selenite-treated leukemia cells. Exp Cell Res 2020; 389:111879. [PMID: 32017928 DOI: 10.1016/j.yexcr.2020.111879] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 01/22/2020] [Accepted: 01/28/2020] [Indexed: 01/31/2023]
Abstract
Coordinated regulation of autophagy and apoptosis helps to enhance the antitumor effects of sodium selenite. However, the potential molecules that act as switch nodes in the crosstalk between autophagy and apoptosis is still elusive. Phospholipid scramblase 1 (PLSCR1) has been shown to regulate leukocyte differentiation, while its role in autophagy/apoptosis toggle switch remains unexplored. In this study, we showed that sodium selenite switched protective autophagy to apoptosis in p53-wild type NB4 cells without obvious caspase-8/apoptosis-inducing factor (AIF) axis activation, while induced autophagy-dependent caspase-8/AIF axis activation in p53-mutant Jurkat cells. Additionally, p53 was demonstrated as a positive regulator of PLSCR1. p53-dependent up-regulation of PLSCR1 accounted for the differential regulation of autophagy and apoptosis induced by sodium selenite. Furthermore, sodium selenite induced the release of AIF from mitochondria to cytosol with the facilitation of caspase-8 in Jurkat cells, while not in NB4 cells. The released AIF further enhanced autophagy flux through interacting with PLSCR1, which hereby resulting in the disassociation of PLSCR1 from Atg5-Atg12 complex. Our results indicate that PLSCR1 plays a critical role in p53-dependent regulation of autophagy and apoptosis in sodium selenite-treated leukemia cells. Manipulation of p53-PLSCR1 cascade might be beneficial to enhance the anti-tumor effects of sodium selenite.
Collapse
Affiliation(s)
- Kejian Shi
- Department of Thoracic Surgery, Xuanwu Hospital, Capital Medical University, Beijing, 100053, PR China; Beijing Research Institute of Traumatology and Orthopaedics, Beijing, 100035, PR China; State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medicine Sciences & School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100005, PR China.
| | - Jiajia An
- Department of Clinical Laboratory, Binzhou Medical University Hospital, Binzhou, 256603, PR China; State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medicine Sciences & School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100005, PR China.
| | - Kun Qian
- Department of Thoracic Surgery, Xuanwu Hospital, Capital Medical University, Beijing, 100053, PR China.
| | - Xin Zhao
- Department of Thoracic Surgery, Xuanwu Hospital, Capital Medical University, Beijing, 100053, PR China.
| | - Feng Li
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medicine Sciences & School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100005, PR China.
| | - Xiaowei Ma
- Laboratory of Controllable Nanopharmaceuticals, Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing, 100190, PR China.
| | - Ying Wang
- Beijing Research Institute of Traumatology and Orthopaedics, Beijing, 100035, PR China.
| | - Yi Zhang
- Department of Thoracic Surgery, Xuanwu Hospital, Capital Medical University, Beijing, 100053, PR China.
| |
Collapse
|
13
|
Bartoszewski R, Gebert M, Janaszak-Jasiecka A, Cabaj A, Króliczewski J, Bartoszewska S, Sobolewska A, Crossman DK, Ochocka R, Kamysz W, Kalinowski L, Dąbrowski M, Collawn JF. Genome-wide mRNA profiling identifies RCAN1 and GADD45A as regulators of the transitional switch from survival to apoptosis during ER stress. FEBS J 2020; 287:2923-2947. [PMID: 31880863 DOI: 10.1111/febs.15195] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 11/26/2019] [Accepted: 12/23/2019] [Indexed: 12/17/2022]
Abstract
Endoplasmic reticulum (ER) stress conditions promote a cellular adaptive mechanism called the unfolded protein response (UPR) that utilizes three stress sensors, inositol-requiring protein 1, protein kinase RNA-like ER kinase, and activating transcription factor 6. These sensors activate a number of pathways to reduce the stress and facilitate cell survival. While much is known about the mechanisms involved that modulate apoptosis during chronic stress, less is known about the transition between the prosurvival and proapoptotic factors that determine cell fate. Here, we employed a genetic screen that utilized three different pharmacological stressors to induce ER stress in a human-immortalized airway epithelial cell line, immortalized human bronchial epithelial cells. We followed the stress responses over an 18-h time course and utilized real-time monitoring of cell survival, next-generation sequencing, and quantitative real-time PCR to identify and validate genes that were upregulated with all three commonly employed ER stressors, inhibitor of calpain 1, tunicamycin, and thapsigargin. growth arrest and DNA damage-inducible alpha (GADD45A), a proapoptotic factor, and regulator of calcineurin 1 (RCAN1) mRNAs were identified and verified by showing that small interfering RNA (siRNA) knockdown of GADD45A decreased CCAAT-enhancer-binding protein homologous protein (a.k.a DDIT3), BCL2-binding component 3 (a.k.a. BBC3), and phorbol-12-myristate-13-acetate-induced protein 1 expression, 3 proapoptotic factors, and increased cell viability during ER stress conditions, whereas siRNA knockdown of RCAN1 dramatically decreased cell viability. These results suggest that the relative levels of these two genes regulate cell fate decisions during ER stress independent of the type of ER stressor.
Collapse
Affiliation(s)
- Rafal Bartoszewski
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Poland
| | - Magdalena Gebert
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Poland
| | | | - Aleksandra Cabaj
- Laboratory of Bioinformatics, Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Jarosław Króliczewski
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Poland
| | | | - Aleksandra Sobolewska
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Poland
| | - David K Crossman
- Department of Genetics, Heflin Center for Genomic Science, University of Alabama at Birmingham, AL, USA
| | - Renata Ochocka
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Poland
| | - Wojciech Kamysz
- Department of Inorganic Chemistry, Medical University of Gdansk, Poland
| | - Leszek Kalinowski
- Department of Medical Laboratory Diagnostics and Central Bank of Frozen Tissues & Genetic Specimens, Medical University of Gdansk, Poland
| | - Michał Dąbrowski
- Laboratory of Bioinformatics, Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - James F Collawn
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, AL, USA
| |
Collapse
|
14
|
Sun QY, Ding LW, Johnson K, Zhou S, Tyner JW, Yang H, Doan NB, Said JW, Xiao JF, Loh XY, Ran XB, Venkatachalam N, Lao Z, Chen Y, Xu L, Fan LF, Chien W, Lin DC, Koeffler HP. SOX7 regulates MAPK/ERK-BIM mediated apoptosis in cancer cells. Oncogene 2019; 38:6196-6210. [DOI: 10.1038/s41388-019-0865-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 05/14/2019] [Accepted: 05/16/2019] [Indexed: 12/21/2022]
|
15
|
Li Z, Ding X, Wu H, Liu C. Artemisinin inhibits angiogenesis by regulating p38 MAPK/CREB/TSP-1 signaling pathway in osteosarcoma. J Cell Biochem 2019; 120:11462-11470. [PMID: 30746754 DOI: 10.1002/jcb.28424] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 12/13/2018] [Accepted: 01/10/2019] [Indexed: 01/24/2023]
Abstract
Osteosarcoma is the most common bone tumor and characterizes a high metastatic potential. In osteosarcoma, angiogenesis is reported to be closely associated with tumor metastasis. Understanding the underlying mechanisms and accordingly developing therapeutic strategies are urgently desired. Antimalarial agent, artemisinin, has been reported to inhibit tumor angiogenesis. However, we still knew little about the effects of artemisinin on angiogenesis and its potential molecular mechanisms in human osteosarcoma. In this study, we found that artemisinin could induce both the expression and secretion of thrombospondin-1 (TSP-1) in a dose-dependent way in osteosarcoma cells. In addition, TSP-1 could effectively restore the artemisinin-induced suppression of angiogenesis in human umbilical vein endothelial cells (HUVECs). More importantly, we further found that phosphorylation of cAMP response element-binding protein (CREB) bond specifically to the promoter of TSP-1 and promoted its transcriptional activation. Moreover, our results showed that artemisinin could induce the phosphorylation of CREB via the activation of p38 mitogen-activated protein kinase (MAPK) signaling pathway in osteosarcoma cells. In vivo, we also found that artemisinin could inhibit osteosarcoma proliferation and angiogenesis by regulating the p38 MAPK/CREB/TSP-1 signaling pathway. Taken together, our findings indicated that artemisinin could inhibit angiogenesis by regulating the p38 MAPK/CREB/TSP-1 signaling pathway in osteosarcoma.
Collapse
Affiliation(s)
- Zhi Li
- Department of Orthopedics, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xiaomin Ding
- Department of Orthopedics, the Second Affiliated Hospital of Nantong University, Nantong, China
| | - Haihui Wu
- Department of Orthopedics, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai, China
| | - Chao Liu
- Department of Orthopedics, Shanghai Songjiang Central Hospital, Shanghai, China
| |
Collapse
|
16
|
Shahrabi S, Paridar M, Zeinvand-Lorestani M, Jalili A, Zibara K, Abdollahi M, Khosravi A. Autophagy regulation and its role in normal and malignant hematopoiesis. J Cell Physiol 2019; 234:21746-21757. [PMID: 31161605 DOI: 10.1002/jcp.28903] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 05/11/2019] [Accepted: 05/14/2019] [Indexed: 12/15/2022]
Abstract
Autophagy, the molecular machinery of self-eating, plays a dual role of a tumor promoter and tumor suppressor. This mechanism affects different clinical responses in cancer cells. Autophagy is targeted for treating patients resistant to chemotherapy or radiation. Limited reports investigate the significance of autophagy in cancer therapy, the regulation of hematopoietic and leukemic stem cells and leukemia formation. In the current review, the role of autophagy is discussed in various stages of hematopoiesis including quiescence, self-renewal, and differentiation.
Collapse
Affiliation(s)
- Saeid Shahrabi
- Department of Biochemistry and Hematology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Mostafa Paridar
- Deputy of Management and Resources Development, Ministry of Health and Medical Education, Tehran, Iran
| | | | - Arsalan Jalili
- Department of Stem Cells and Developmental Biology at Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Kazem Zibara
- Biology Department, PRASE, Faculty of Sciences-I, Lebanese University, Beirut, Lebanon
| | - Mohammad Abdollahi
- Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Abbas Khosravi
- Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| |
Collapse
|
17
|
Stressed: The Unfolded Protein Response in T Cell Development, Activation, and Function. Int J Mol Sci 2019; 20:ijms20071792. [PMID: 30978945 PMCID: PMC6479341 DOI: 10.3390/ijms20071792] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 04/04/2019] [Accepted: 04/08/2019] [Indexed: 12/27/2022] Open
Abstract
The unfolded protein response (UPR) is a highly conserved pathway that allows cells to respond to stress in the endoplasmic reticulum caused by an accumulation of misfolded and unfolded protein. This is of great importance to secretory cells because, in order for proteins to traffic from the endoplasmic reticulum (ER), they need to be folded appropriately. While a wealth of literature has implicated UPR in immune responses, less attention has been given to the role of UPR in T cell development and function. This review discusses the importance of UPR in T cell development, homeostasis, activation, and effector functions. We also speculate about how UPR may be manipulated in T cells to ameliorate pathologies.
Collapse
|
18
|
Therapeutic Modulation of Autophagy in Leukaemia and Lymphoma. Cells 2019; 8:cells8020103. [PMID: 30704144 PMCID: PMC6406467 DOI: 10.3390/cells8020103] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 01/26/2019] [Accepted: 01/28/2019] [Indexed: 02/07/2023] Open
Abstract
Haematopoiesis is a tightly orchestrated process where a pool of hematopoietic stem and progenitor cells (HSPCs) with high self-renewal potential can give rise to both lymphoid and myeloid lineages. The HSPCs pool is reduced with ageing resulting in few HSPC clones maintaining haematopoiesis thereby reducing blood cell diversity, a phenomenon called clonal haematopoiesis. Clonal expansion of HSPCs carrying specific genetic mutations leads to increased risk for haematological malignancies. Therefore, it comes as no surprise that hematopoietic tumours develop in higher frequency in elderly people. Unfortunately, elderly patients with leukaemia or lymphoma still have an unsatisfactory prognosis compared to younger ones highlighting the need to develop more efficient therapies for this group of patients. Growing evidence indicates that macroautophagy (hereafter referred to as autophagy) is essential for health and longevity. This review is focusing on the role of autophagy in normal haematopoiesis as well as in leukaemia and lymphoma development. Attenuated autophagy may support early hematopoietic neoplasia whereas activation of autophagy in later stages of tumour development and in response to a variety of therapies rather triggers a pro-tumoral response. Novel insights into the role of autophagy in haematopoiesis will be discussed in light of designing new autophagy modulating therapies in hematopoietic cancers.
Collapse
|
19
|
Xiao Y, Xu S, Zhao S, Liu K, Lu Z, Hou Z. Protective effects of selenium against zearalenone-induced apoptosis in chicken spleen lymphocyte via an endoplasmic reticulum stress signaling pathway. Cell Stress Chaperones 2019; 24:77-89. [PMID: 30374880 PMCID: PMC6363622 DOI: 10.1007/s12192-018-0943-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/24/2018] [Accepted: 09/26/2018] [Indexed: 12/16/2022] Open
Abstract
Selenium (Se), an antioxidant agent, provides significant protection from reactive oxygen species (ROS)-induced cell damage in vivo and in vitro. However, it is unclear whether Se can protect against zearalenone (ZEN)-induced apoptosis in chicken spleen lymphocyte. In this study, we investigated the underlying mechanism of the apoptosis induced by ZEN in chicken spleen lymphocyte and further evaluated the protective mechanism of Se on ZEN-induced apoptosis. The results show that ZEN induced an increase in ROS generation and lipid peroxidation, and a decrease in levels of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), and glutathione (GSH). The results of apoptosis morphologically from acridine orange/ethidium bromide (AO/EB) fluorescent staining and flow cytometry analysis show apparent apoptosis in the ZEN-treated group, and was confirmed by the upregulation of caspase-3, -12 and downregulation of Bcl-2. Meanwhile, ZEN activated the endoplasmic reticulum (ER) stress by upregulating ER stress-related molecular sensors (GRP78, ATF6, ATF4, IRE). However, co-treatment with Se effectively blocked ROS generation, improved antioxdative capacity, and reversed apoptosis and ER stress-related genes and protein expression. Taken together, these data suggest that oxidative stress and ER stress play a vital role in ZEN-induced apoptosis, and Se had a significant preventive effect on ZEN-induced apoptosis in chicken spleen lymphocyte via ameliorating the ER stress signaling pathway.
Collapse
Affiliation(s)
- Yinxia Xiao
- Department of Veterinary Obstetrics, College of Veterinary Medicine, Northeast Agricultural 8 University, Harbin, 150030, China
| | - Shiwen Xu
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Northeast 11 Agricultural University, Harbin, 150030, China
| | - Shuchen Zhao
- Department of Veterinary Obstetrics, College of Veterinary Medicine, Northeast Agricultural 8 University, Harbin, 150030, China
| | - Kexiang Liu
- Department of Veterinary Obstetrics, College of Veterinary Medicine, Northeast Agricultural 8 University, Harbin, 150030, China
| | - Zhanjun Lu
- Department of Veterinary Obstetrics, College of Veterinary Medicine, Northeast Agricultural 8 University, Harbin, 150030, China
| | - Zhenzhong Hou
- Department of Veterinary Obstetrics, College of Veterinary Medicine, Northeast Agricultural 8 University, Harbin, 150030, China.
- College of Veterinary Medicine, Northeast Agricultural University, Animal Hospital, NO.59 Wood Street, Xiangfang District, Harbin, 150030, China.
| |
Collapse
|
20
|
Liu B, Gao JM, Li F, Gong QH, Shi JS. Gastrodin Attenuates Bilateral Common Carotid Artery Occlusion-Induced Cognitive Deficits via Regulating Aβ-Related Proteins and Reducing Autophagy and Apoptosis in Rats. Front Pharmacol 2018; 9:405. [PMID: 29755351 PMCID: PMC5932202 DOI: 10.3389/fphar.2018.00405] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Accepted: 04/09/2018] [Indexed: 12/11/2022] Open
Abstract
Gastrodin (GAS), an active constituent extracted from Gastrodia elata Blume, is used to treat ischemic stroke, epilepsy, dizziness, and dementia for centuries in China. This study examined its effects on vascular dementia (VD) and the underlying molecular mechanisms. VD was established by ligation of bilateral common carotid artery occlusion (BCCAO). A total of 7 days after BCCAO surgery, GAS (15, 30, and 60 mg/kg) was orally administered for 28 consecutive days to evaluate therapeutic effects. Cognitive function was tested by the Morris water maze. The neuronal morphological changes were examined via Hematoxylin-Eosin staining. Flow cytometry was used for evaluating apoptosis in the hippocampi. The target protein expression was examined by Western blot. The results showed that BCCAO induced cognitive impairment, hippocampus CA1 and CA3 pyramidal neuron damage, beta-amyloid (Aβ) deposition, excessive autophagy, and apoptosis. GAS treatment significantly improved BCCAO-induced cognitive deficits and hippocampus neuron damage. Molecular analysis revealed that GAS exerted the protective effect via reducing the levels of Aβ1-40/42, APP, and β-site APP-cleaving enzyme 1 expression, and increasing Aβ-related protein, a disintegrin and metalloprotease 10, and insulin degrading enzyme expression. Meanwhile, GAS inhibited excessive autophagy via decreasing Beclin-1, LC3-II, and p62 levels. Furthermore, GAS inhibited apoptosis through the downregulation of Bax and upregulation of Bcl-2. Moreover, P38 MAPK signaling pathway was involved in the process. Our findings demonstrate that GAS was effective in the treatment of BCCAO-induced VD via targeting Aβ-related protein formation and inhibiting autophagy and apoptosis of hippocampus neurons.
Collapse
Affiliation(s)
- Bo Liu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Jian-Mei Gao
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Fei Li
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Qi-Hai Gong
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Jing-Shan Shi
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| |
Collapse
|
21
|
Chistiakov DA, Melnichenko AA, Grechko AV, Myasoedova VA, Orekhov AN. Potential of anti-inflammatory agents for treatment of atherosclerosis. Exp Mol Pathol 2018; 104:114-124. [PMID: 29378168 DOI: 10.1016/j.yexmp.2018.01.008] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 12/30/2017] [Accepted: 01/17/2018] [Indexed: 12/23/2022]
Abstract
Chronic inflammation is a central pathogenic mechanism of atherosclerosis induction and progression. Vascular inflammation is associated with accelerated onset of late atherosclerosis complications. Atherosclerosis-related inflammation is mediated by a complex cocktail of pro-inflammatory cytokines, chemokines, bioactive lipids, and adhesion molecules, and blocking the key pro-atherogenic inflammatory mechanisms can be beneficial for treatment of atherosclerosis. Therapeutic agents that specifically target some of the atherosclerosis-related inflammatory mechanisms have been evaluated in preclinical and clinical studies. The most promising anti-inflammatory compounds for treatment of atherosclerosis include non-specific anti-inflammatory drugs, phospholipase inhibitors, blockers of major inflammatory cytokines, leukotrienes, adhesion molecules, and pro-inflammatory signaling pathways, such as CCL2-CCR2 axis or p38 MAPK pathway. Ongoing studies attempt evaluating therapeutic utility of these anti-inflammatory drugs for treatment of atherosclerosis. The obtained results are important for our understanding of atherosclerosis-related inflammatory mechanisms and for designing randomized controlled studies assessing the effect of specific anti-inflammatory strategies on cardiovascular outcomes.
Collapse
Affiliation(s)
- Dimitry A Chistiakov
- Department of Neurochemistry, Division of Basic and Applied Neurobiology, Serbsky Federal Medical Research Center of Psychiatry and Narcology, Moscow 119991, Russia
| | - Alexandra A Melnichenko
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Sciences, Moscow 125315, Russia
| | - Andrey V Grechko
- Federal Scientific Clinical Center for Resuscitation and Rehabilitation, Moscow 109240, Russia
| | - Veronika A Myasoedova
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Sciences, Moscow 125315, Russia
| | - Alexander N Orekhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Sciences, Moscow 125315, Russia; Institute for Atherosclerosis Research, Skolkovo Innovative Center, Moscow 121609, Russia.
| |
Collapse
|
22
|
McDermott JR, Geng X, Jiang L, Gálvez-Peralta M, Chen F, Nebert DW, Liu Z. Zinc- and bicarbonate-dependent ZIP8 transporter mediates selenite uptake. Oncotarget 2018; 7:35327-40. [PMID: 27166256 PMCID: PMC5085232 DOI: 10.18632/oncotarget.9205] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Accepted: 04/11/2016] [Indexed: 12/26/2022] Open
Abstract
Selenite (HSeO3−) is a monovalent anion of the essential trace element and micronutrient selenium (Se). In therapeutic concentrations, HSeO3− has been studied for treating certain cancers, serious inflammatory disorders, and septic shock. Little is known, however, about HSeO3− uptake into mammalian cells; until now, no mammalian HSeO3− uptake transporter has been identified. The ubiquitous mammalian ZIP8 divalent cation transporter (encoded by the SLC39A8 gene) is bicarbonate-dependent, moving endogenous substrates (Zn2+, Mn2+, Fe2+ or Co2+) and nonessential metals such as Cd2+ into the cell. Herein we studied HSeO3− uptake in: human and mouse cell cultures, shRNA-knockdown experiments, Xenopus oocytes, wild-type mice and two transgenic mouse lines having genetically altered ZIP8 expression, and mouse erythrocytes ex vivo. In mammalian cell culture, excess Zn2+ levels and/or ZIP8 over-expression can be associated with diminished viability in selenite-treated cells. Intraperitoneal HSeO3− causes the largest ZIP8-dependent increases in intracellular Se content in liver, followed by kidney, heart, lung and spleen. In every model system studied, HSeO3− uptake is tightly associated with ZIP8 protein levels and sufficient Zn2+ and HCO3− concentrations, suggesting that the ZIP8-mediated electroneutral complex transported contains three ions: Zn2+/(HCO3−)(HSeO3−). Transporters having three different ions in their transport complex are not without precedent. Although there might be other HSeO3− influx transporters as yet undiscovered, data herein suggest that mammalian ZIP8 plays a major role in HSeO3− uptake.
Collapse
Affiliation(s)
- Joseph R McDermott
- Department of Biological Sciences, Oakland University, Rochester, MI 48309, USA
| | - Xiangrong Geng
- Department of Biological Sciences, Oakland University, Rochester, MI 48309, USA
| | - Lan Jiang
- Department of Biological Sciences, Oakland University, Rochester, MI 48309, USA
| | - Marina Gálvez-Peralta
- Department of Environmental Health and Center for Environmental Genetics, University of Cincinnati Medical Center, Cincinnati, OH 45267, USA
| | - Fei Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI 48201, USA
| | - Daniel W Nebert
- Department of Environmental Health and Center for Environmental Genetics, University of Cincinnati Medical Center, Cincinnati, OH 45267, USA
| | - Zijuan Liu
- Department of Biological Sciences, Oakland University, Rochester, MI 48309, USA
| |
Collapse
|
23
|
Gao M, Chen G, Wang H, Xie B, Hu L, Kong Y, Yang G, Tao Y, Han Y, Wu X, Zhang Y, Dai B, Shi J. Therapeutic potential and functional interaction of carfilzomib and vorinostat in T-cell leukemia/lymphoma. Oncotarget 2018; 7:29102-15. [PMID: 27074555 PMCID: PMC5045381 DOI: 10.18632/oncotarget.8667] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 03/28/2016] [Indexed: 11/25/2022] Open
Abstract
We previously showed that the proteasome inhibitor carfilzomib and the histone deacetylase inhibitor (HDACI) vorinostat cooperated to induce cell apoptosis in one T-cell leukemia cell line in vitro, implying the possibility of the combination treatment of carfilzomib and vorinostat as a potential therapeutic strategy in human T-cell leukemia/lymphoma. Here we report that combination treatment of carfilzomib and vorinostat enhanced cell apoptosis and induced a marked increase in G2-M arrest, reactive oxygen species (ROS) generation, and activated the members of mitogen-activated protein kinases (MAPK) family, including the stress-activated kinases JNK, p38MAPK, and ERK1/2. Carfilzomib/vorinostat-mediated apoptosis was blocked by the ROS scavenger N-acetylcysteine (NAC). The JNK inhibitor SP600125 and the p38MAPK inhibitor SB203580 but not the MEK1/2 inhibitor U0126 significantly attenuated carfilzomib/vorinostat-induced apoptosis, suggesting that p38MAPK and JNK activation contribute to carfilzomib and vorinostat-induced apoptosis. This was further confirmed via short hairpin (shRNA) RNA knockdown of p38MAPK and JNK. Interestingly, the ROS scavenger NAC attenuated carfilzomib/vorinostat-mediated activation of p38MAPK and JNK. However, p38MAPK shRNA but not JNK shRNA diminished carfilzomib/vorinostat-mediated ROS generation. In contrast, overexpression of p38MAPK significantly increased carfilzomib/vorinostat-mediated ROS generation, suggesting that an amplification loop exists between ROS and p38MAPK pathway. Combination treatment of carfilzomib and vorinostat enhanced their individual antitumor activity in both a human xenograft model as well as human primary T-cell leukemia/lymphoma cells. These data suggest the potential clinical benefit and underlying molecular mechanism of combining carfilzomib with vorinostat in the treatment of human T-cell leukemia/lymphoma.
Collapse
Affiliation(s)
- Minjie Gao
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Gege Chen
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Houcai Wang
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Bingqian Xie
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liangning Hu
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yuanyuan Kong
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Guang Yang
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yi Tao
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ying Han
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaosong Wu
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yiwen Zhang
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Bojie Dai
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,College of Life Science and Technology, Tongji University, Shanghai, China
| | - Jumei Shi
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| |
Collapse
|
24
|
Díaz M, González R, Plano D, Palop JA, Sanmartín C, Encío I. A diphenyldiselenide derivative induces autophagy via JNK in HTB-54 lung cancer cells. J Cell Mol Med 2017; 22:289-301. [PMID: 28922542 PMCID: PMC5742718 DOI: 10.1111/jcmm.13318] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 06/19/2017] [Indexed: 12/21/2022] Open
Abstract
Symmetric aromatic diselenides are potential anticancer agents with strong cytotoxic activity. In this study, the in vitro anticancer activities of a novel series of diarylseleno derivatives from the diphenyldiselenide (DPDS) scaffold were evaluated. Most of the compounds exhibited high efficacy for inducing cytotoxicity against different human cancer cell lines. DPDS 2, the compound with the lowest mean GI50 value, induced both caspase-dependent apoptosis and arrest at the G0 /G1 phase in acute lymphoblastic leucemia CCRF-CEM cells. Consistent with this, PARP cleavage; enhanced caspase-2, -3, -8 and -9 activity; reduced CDK4 expression and increased levels of p53 were detected in these cells upon DPDS 2 treatment. Mutated p53 expressed in CCRF-CEM cells retains its transactivating activity. Therefore, increased levels of p21CIP1 and BAX proteins were also detected. On the other hand, DPDS 6, the compound with the highest selectivity index for cancer cells, resulted in G2 /M cell cycle arrest and caspase-independent cell death in p53 deficient HTB-54 lung cancer cells. Autophagy inhibitors 3-methyladenine, wortmannin and chloroquine inhibited DPDS 6-induced cell death. Consistent with autophagy, increased LC3-II and decreased SQSTM1/p62 levels were detected in HTB-54 cells in response to DPDS 6. Induction of JNK phosphorylation and a reduction in phospho-p38 MAPK were also detected. Moreover, the JNK inhibitor SP600125-protected HTB-54 cells from DPDS 6-induced cell death indicating that JNK activation is involved in DPDS 6-induced autophagy. These results highlight the anticancer effects of these derivatives and warrant future studies examining their clinical potential.
Collapse
Affiliation(s)
- Marta Díaz
- Department of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy and Nutrition, University of Navarra, Pamplona, Spain.,Instituto de Investigaciones Sanitarias de Navarra (IDISNA), Pamplona, Spain
| | - Roncesvalles González
- Departamento de Ciencias de la Salud, Universidad Pública de Navarra, Pamplona, Spain
| | - Daniel Plano
- Department of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy and Nutrition, University of Navarra, Pamplona, Spain.,Instituto de Investigaciones Sanitarias de Navarra (IDISNA), Pamplona, Spain
| | - Juan Antonio Palop
- Department of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy and Nutrition, University of Navarra, Pamplona, Spain.,Instituto de Investigaciones Sanitarias de Navarra (IDISNA), Pamplona, Spain
| | - Carmen Sanmartín
- Department of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy and Nutrition, University of Navarra, Pamplona, Spain.,Instituto de Investigaciones Sanitarias de Navarra (IDISNA), Pamplona, Spain
| | - Ignacio Encío
- Departamento de Ciencias de la Salud, Universidad Pública de Navarra, Pamplona, Spain
| |
Collapse
|
25
|
Zhao J, Li Y, Gao J, De Y. Hesperidin inhibits ovarian cancer cell viability through endoplasmic reticulum stress signaling pathways. Oncol Lett 2017; 14:5569-5574. [PMID: 29142606 DOI: 10.3892/ol.2017.6873] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Accepted: 03/30/2017] [Indexed: 12/14/2022] Open
Abstract
Hesperidin is a vitamin P flavonoid compound primarily present in citrus fruits. The aim of the present study was to investigate whether hesperidin inhibits ovarian cancer cell viability via endoplasmic reticulum stress signaling pathways. A2780 cells were treated with various doses of hesperidin for 6, 12 or 24 h, and the viability of A2780 cells was assessed using the MTT assay. Hesperidin decreased the viability of A2780 cells and increased cytotoxicity in a dose- and time-dependent manner. In addition, hesperidin induced apoptosis and increased cleaved caspase-3 protein expression levels in A2780 cells. Furthermore, hesperidin markedly increased the protein expression of anti-growth arrest- and DNA damage-inducible gene 153, anti-CCAAT'enhancer-binding protein homologous protein, glucose-regulated protein 78 and cytochrome c in A2780 cells. The results of the present study indicated that hesperidin inhibits cell viability and induces apoptosis in ovarian cancer cells via endoplasmic reticulum stress signaling pathways. Thus, hesperidin may offer a novel therapeutic tool for ovarian carcinoma.
Collapse
Affiliation(s)
- Jun Zhao
- Department for Gynaecology and Obstetrics, General Hospital of People's Liberation Army, Beijing 100053, P.R. China
| | - Yali Li
- Department for Gynaecology and Obstetrics, General Hospital of People's Liberation Army, Beijing 100053, P.R. China
| | - Jinfang Gao
- Department for Gynaecology and Obstetrics, Navy General Hospital, Beijing 100048, P.R. China
| | - Yinshan De
- Department for Gynaecology and Obstetrics, Navy General Hospital, Beijing 100048, P.R. China
| |
Collapse
|
26
|
Gong X, Xie H, Li X, Wu J, Lin Y. Bisphenol A induced apoptosis and transcriptome differences of spermatogonial stem cells in vitro. Acta Biochim Biophys Sin (Shanghai) 2017; 49:780-791. [PMID: 28910977 DOI: 10.1093/abbs/gmx075] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Indexed: 12/27/2022] Open
Abstract
Bisphenol A (BPA) is widely used as an industrial plasticizer, which is also an endocrine disruptor and considered to have adverse effects on reproduction. In male mammals, the long-term production of billions of spermatozoa relies on the regulated proliferation and differentiation of spermatogonial stem cells (SSCs). However, little is known about the effects of BPA on the viability of SSCs. To investigate the influence of BPA exposure on SSCs in vitro, we isolated SSCs from mouse and successfully established in vitro propagation of SSCs. After BPA treatment, we found that BPA reduced the viability of SSCs and induced SSC apoptosis. For revealing the transcriptome differences of the BPA-treated SSCs, we performed high-throughput RNA sequencing and found that 860 genes were differentially expressed among 18,272 observed genes. The gene ontology (GO) terms, regulation of programmed cell death and apoptotic process, were enriched in the differentially expressed genes (DEGs). Among the cluster of DEGs associated with the kyoto encyclopedia of genes and genomes (KEGG) apoptosis pathway, activating transcription factor 4 (Atf4) and DNA damage inducible transcript 3 (Ddit3) genes were significantly up-regulated in BPA-treated SSCs, which were proved by qPCR. Taken together, these findings suggest that BPA can increase the mRNA expression of pro-apoptosis genes and reduce the viability of SSCs by inducing apoptosis.
Collapse
Affiliation(s)
- Xiaowen Gong
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hui Xie
- Key Laboratory for the Genetics of Developmental & Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaoyong Li
- Key Laboratory for the Genetics of Developmental & Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ji Wu
- Key Laboratory for the Genetics of Developmental & Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, Shanghai Jiao Tong University, Shanghai 200240, China
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Ningxia Medical University, Yinchuan 750004, China
| | - Yi Lin
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| |
Collapse
|
27
|
Shen H, Pan XD, Zhang J, Zeng YQ, Zhou M, Yang LM, Ye B, Dai XM, Zhu YG, Chen XC. Endoplasmic Reticulum Stress Induces the Early Appearance of Pro-apoptotic and Anti-apoptotic Proteins in Neurons of Five Familial Alzheimer's Disease Mice. Chin Med J (Engl) 2017; 129:2845-2852. [PMID: 27901000 PMCID: PMC5146794 DOI: 10.4103/0366-6999.194643] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Background: Amyloid β (Aβ) deposits and the endoplasmic reticulum stress (ERS) are both well established in the development and progression of Alzheimer's disease (AD). However, the mechanism and role of Aβ-induced ERS in AD-associated pathological progression remain to be elucidated. Methods: The five familial AD (5×FAD) mice and wild-type (WT) mice aged 2, 7, and 12 months were used in the present study. Morris water maze test was used to evaluate their cognitive performance. Immunofluorescence and Western blot analyses were used to examine the dynamic changes of pro-apoptotic (CCAAT/enhancer-binding protein homologous protein [CHOP] and cleaved caspase-12) and anti-apoptotic factors (chaperone glucose-regulated protein [GRP] 78 and endoplasmic reticulum-associated protein degradation-associated ubiquitin ligase synovial apoptosis inhibitor 1 [SYVN1]) in the ERS-associated unfolded protein response (UPR) pathway. Results: Compared with age-matched WT mice, 5×FAD mice showed higher cleaved caspase-3, lower neuron-positive staining at the age of 12 months, but earlier cognitive deficit at the age of 7 months (all P < 0.05). Interestingly, for 2-month-old 5×FAD mice, the related proteins involved in the ERS-associated UPR pathway, including CHOP, cleaved caspase-12, GRP 78, and SYVN1, were significantly increased when compared with those in age-matched WT mice (all P < 0.05). Moreover, ERS occurred mainly in neurons, not in astrocytes. Conclusions: These findings suggest that compared with those of age-matched WT mice, ERS-associated pro-apoptotic and anti-apoptotic proteins are upregulated in 2-month-old 5×FAD mice, consistent with intracellular Aβ aggregation in neurons.
Collapse
Affiliation(s)
- Hui Shen
- Department of Neurology and Geriatrics, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital; Key Laboratory of Brain Aging and Neurodegenerative Diseases, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, Fujian 350001, China
| | - Xiao-Dong Pan
- Department of Neurology and Geriatrics, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital; Key Laboratory of Brain Aging and Neurodegenerative Diseases, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, Fujian 350001, China
| | - Jing Zhang
- Department of Neurology and Geriatrics, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital; Key Laboratory of Brain Aging and Neurodegenerative Diseases, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, Fujian 350001, China
| | - Yu-Qi Zeng
- Department of Neurology and Geriatrics, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital; Key Laboratory of Brain Aging and Neurodegenerative Diseases, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, Fujian 350001, China
| | - Meng Zhou
- Department of Neurology and Geriatrics, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital; Key Laboratory of Brain Aging and Neurodegenerative Diseases, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, Fujian 350001, China
| | - Lu-Meng Yang
- Department of Neurology and Geriatrics, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital; Key Laboratory of Brain Aging and Neurodegenerative Diseases, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, Fujian 350001, China
| | - Bing Ye
- Department of Neurology and Geriatrics, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital; Key Laboratory of Brain Aging and Neurodegenerative Diseases, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, Fujian 350001, China
| | - Xiao-Man Dai
- Department of Neurology and Geriatrics, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital; Key Laboratory of Brain Aging and Neurodegenerative Diseases, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, Fujian 350001, China
| | - Yuan-Gui Zhu
- Department of Neurology and Geriatrics, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital; Key Laboratory of Brain Aging and Neurodegenerative Diseases, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, Fujian 350001, China
| | - Xiao-Chun Chen
- Department of Neurology and Geriatrics, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital; Key Laboratory of Brain Aging and Neurodegenerative Diseases, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, Fujian 350001, China
| |
Collapse
|
28
|
HIV Exploits Antiviral Host Innate GCN2-ATF4 Signaling for Establishing Viral Replication Early in Infection. mBio 2017; 8:mBio.01518-16. [PMID: 28465428 PMCID: PMC5414007 DOI: 10.1128/mbio.01518-16] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Antiviral innate host defenses against acute viral infections include suppression of host protein synthesis to restrict viral protein production. Less is known about mechanisms by which viral pathogens subvert host antiviral innate responses for establishing their replication and dissemination. We investigated early innate defense against human immunodeficiency virus (HIV) infection and viral evasion by utilizing human CD4+ T cell cultures in vitro and a simian immunodeficiency virus (SIV) model of AIDS in vivo. Our data showed that early host innate defense against the viral infection involves GCN2-ATF4 signaling-mediated suppression of global protein synthesis, which is exploited by the virus for supporting its own replication during early viral infection and dissemination in the gut mucosa. Suppression of protein synthesis and induction of protein kinase GCN2-ATF4 signaling were detected in the gut during acute SIV infection. These changes diminished during chronic viral infection. HIV replication induced by serum deprivation in CD4+ T cells was linked to the induction of ATF4 that was recruited to the HIV long terminal repeat (LTR) to promote viral transcription. Experimental inhibition of GCN2-ATF4 signaling either by a specific inhibitor or by amino acid supplementation suppressed the induction of HIV expression. Enhancing ATF4 expression through selenium administration resulted in reactivation of latent HIV in vitro as well as ex vivo in the primary CD4+ T cells isolated from patients receiving suppressive antiretroviral therapy (ART). In summary, HIV/SIV exploits the early host antiviral response through GCN2-ATF4 signaling by utilizing ATF4 for activating the viral LTR transcription to establish initial viral replication and is a potential target for HIV prevention and therapy. Understanding how HIV overcomes host antiviral innate defense response in order to establish infection and dissemination is critical for developing prevention and treatment strategies. Most investigations focused on the viral pathogenic mechanisms leading to immune dysfunction following robust viral infection and dissemination. Less is known about mechanisms that enable HIV to establish its presence despite rapid onset of host antiviral innate response. Our novel findings provide insights into the viral strategy that hijacks the host innate response of the suppression of protein biosynthesis to restrict the virus production. The virus leverages transcription factor ATF4 expression during the GCN2-ATF4 signaling response and utilizes it to activate viral transcription through the LTR to support viral transcription and production in both HIV and SIV infections. This unique viral strategy is exploiting the innate response and is distinct from the mechanisms of immune dysfunction after the critical mass of viral loads is generated.
Collapse
|
29
|
Zong Y, Feng S, Cheng J, Yu C, Lu G. Up-Regulated ATF4 Expression Increases Cell Sensitivity to Apoptosis in Response to Radiation. Cell Physiol Biochem 2017; 41:784-794. [PMID: 28214891 DOI: 10.1159/000458742] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 01/04/2017] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND/AIMS Activating transcription factor 4 (ATF4) is a member of the activating transcription factor family which regulates the expression of genes involved in amino acid metabolism, redox homeostasis and ER stress responses. ATF4 is also over-expressed in human solid tumors, although its effect on responsiveness to radiation is largely unexplored. METHODS Real-time PCR was used to detect ATF4 mRNA levels in cells treated with different doses of 60Coγ radiation. Cell viability was assayed using a cell counting kit. The cell cycle was analyzed using flow cytometry, and cell apoptosis was assayed using Annexin V-PI double labeling. Small interfering RNA (siRNA) against ATF4 was transfected into ECV304 cells using Lipofectamine 2000. An ATF4 over-expression plasmid (p-ATF4-CGN) was transfected into HEK293 cells that endogenously expressed low levels of ATF4. The levels of intracellular reactive oxygen species (ROS) were measured using CM-H2DCFDA as a probe. RESULTS ATF4 mRNA and protein expression levels were higher after radiation and increased in a dose- and time-dependent manner in AHH1 lymphoblast cells (P < 0.05). An increase in ATF4 levels was also observed after radiation in primary murine spleen cells, human endothelial ECV304 cells, human liver LO2 cells, breast cancer MCF7 cells, and human hepatocellular carcinoma HEPG2 cells. No change was observed in human embryonic kidney 293 (HEK293) cells. Over-expressing ATF4 in HEK293 cells inhibited cell proliferation, increased cell apoptosis and significantly increased the proportion of cells in G1 phase. Conversely, when ATF4 expression was knocked down using siRNA in ECV304 cells, it protected the cells from radiation-induced apoptosis. These findings suggest that ATF4 may play a role in radiation-induced cell killing by inhibiting cell proliferation and promoting cell apoptosis. CONCLUSIONS In this study, we found that radiation up-regulated the expression of ATF4. We used ATF4 knockdown and over-expression systems to show that ATF4 may play a role in radiation-induced cellular apoptosis.
Collapse
|
30
|
Li Z, Zhang P, Yan A, Guo Z, Ban Y, Li J, Chen S, Yang H, He Y, Li J, Guo Y, Zhang W, Hajiramezanali E, An H, Fajardo D, Harbour JW, Ruan Y, Nimer SD, Yu P, Chen X, Xu M, Yang FC. ASXL1 interacts with the cohesin complex to maintain chromatid separation and gene expression for normal hematopoiesis. SCIENCE ADVANCES 2017; 3:e1601602. [PMID: 28116354 PMCID: PMC5249256 DOI: 10.1126/sciadv.1601602] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 11/30/2016] [Indexed: 05/26/2023]
Abstract
ASXL1 is frequently mutated in a spectrum of myeloid malignancies with poor prognosis. Loss of Asxl1 leads to myelodysplastic syndrome-like disease in mice; however, the underlying molecular mechanisms remain unclear. We report that ASXL1 interacts with the cohesin complex, which has been shown to guide sister chromatid segregation and regulate gene expression. Loss of Asxl1 impairs the cohesin function, as reflected by an impaired telophase chromatid disjunction in hematopoietic cells. Chromatin immunoprecipitation followed by DNA sequencing data revealed that ASXL1, RAD21, and SMC1A share 93% of genomic binding sites at promoter regions in Lin-cKit+ (LK) cells. We have shown that loss of Asxl1 reduces the genome binding of RAD21 and SMC1A and alters the expression of ASXL1/cohesin target genes in LK cells. Our study underscores the ASXL1-cohesin interaction as a novel means to maintain normal sister chromatid separation and regulate gene expression in hematopoietic cells.
Collapse
Affiliation(s)
- Zhaomin Li
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Peng Zhang
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Aimin Yan
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Zhengyu Guo
- Department of Electrical and Computer Engineering and TEES-AgriLife Center for Bioinformatics and Genomic Systems Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Yuguang Ban
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Jin Li
- Department of Electrical and Computer Engineering and TEES-AgriLife Center for Bioinformatics and Genomic Systems Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Shi Chen
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Hui Yang
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Yongzheng He
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Jianping Li
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Ying Guo
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Wen Zhang
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Ehsan Hajiramezanali
- Department of Electrical and Computer Engineering and TEES-AgriLife Center for Bioinformatics and Genomic Systems Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Huangda An
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Darlene Fajardo
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - J. William Harbour
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Yijun Ruan
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06030, USA
| | - Stephen D. Nimer
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Internal Medicine, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Peng Yu
- Department of Electrical and Computer Engineering and TEES-AgriLife Center for Bioinformatics and Genomic Systems Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Xi Chen
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Public Health Sciences, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Mingjiang Xu
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Feng-Chun Yang
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| |
Collapse
|
31
|
Rössler OG, Thiel G. Specificity of Stress-Responsive Transcription Factors Nrf2, ATF4, and AP-1. J Cell Biochem 2016; 118:127-140. [PMID: 27278863 DOI: 10.1002/jcb.25619] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 06/07/2016] [Indexed: 01/15/2023]
Abstract
Cellular stress leads to an upregulation of gene transcription. We asked if there is a specificity in the activation of the stress-responsive transcription factors Nrf2, ATF4, and AP-1/c-Jun, or if activation of these proteins is a redundant cellular answer toward extracellular stressors. Here, we show that oxidative stress, induced by stimulation of the cells with the oxidant arsenite, strongly activated gene transcription via the stress-responsive element (StRE), while phorbol ester or tunicamycin, activators of AP-1/c-Jun or ATF4, respectively, activated AP-1 or nutrient-sensing response element-mediated transcription. Preincubation of the cells with N-acetyl-cysteine or overexpression of thioredoxin selectively attenuated arsenite-induced upregulation of StRE-regulated transcription. Expression of either dominant-negative or constitutively active mutants of Nrf2, ATF4, or c-Jun confirmed that distinct transcription units are regulated by these transcription factors. Physiological stimuli involving the activation of either Gαq-coupled designer receptors or the protein kinases c-Jun N-terminal protein kinase or p38 strongly stimulated transcription via AP-1/c-Jun, with minimal effects on Nrf2 or ATF4-responsive promoters. Thus, activation of transcription by extracellular signaling molecules shows specificity at the level of the chemical nature of the signaling molecule, at the level of the intracellular transduction process, and at the level of signal-responsive transcription factors. J. Cell. Biochem. 118: 127-140, 2017. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Oliver G Rössler
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, Building 44, D-66421, Homburg, Germany
| | - Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, Building 44, D-66421, Homburg, Germany
| |
Collapse
|
32
|
Bao H, Liu P, Jiang K, Zhang X, Xie L, Wang Z, Gong P. Huaier polysaccharide induces apoptosis in hepatocellular carcinoma cells through p38 MAPK. Oncol Lett 2016; 12:1058-1066. [PMID: 27446394 DOI: 10.3892/ol.2016.4686] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 05/13/2016] [Indexed: 12/12/2022] Open
Abstract
The underlying mechanism of the antitumor activity of Huaier polysaccharide (HP) remains to be explored. The present study aimed to investigate the inhibitory effect of HP on hepatocellular carcinoma (HCC) cells, and to explore the possible mechanisms of its anticancer effect. Cell viability was measured by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, while apoptotic nuclear changes were observed using Hoechst 33258 staining. The distribution of cell cycle and apoptosis were analyzed by flow cytometry, and western blotting was used to test the apoptotic pathways. Apoptosis and mitogen-activated protein kinase (MAPK) inhibitors were used to investigate the mechanism of apoptosis. HP triggered cell cycle arrest and apoptosis in HepG2 and Huh7 cells. Both the extrinsic and intrinsic apoptotic pathways were activated after HP treatment. Furthermore, HP enhanced the three major MAPK pathways (extracellular signal-regulated kinase, c-Jun N-terminal kinase and p38 MAPK) and inhibited the AKT/mechanistic target of rapamycin signaling pathway in HCC cells. Notably, the inactivation of p38 MAPK impaired the HP-induced cell death. HP exerted its antitumor effect on HCC cells through the regulation of the expression of the apoptosis-related proteins B-cell lymphoma (Bcl)-2, Bcl-2-associated X protein and survivin. The present study provides evidence that HP induces apoptosis in HCC cells and demonstrated the role of p38 MAPK in HP-triggered cancer cell death.
Collapse
Affiliation(s)
- Haidong Bao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Peng Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Ke Jiang
- Institute of Cancer Stem Cell, Dalian Medical University Cancer Center, Dalian, Liaoning 116044, P.R. China
| | - Xianbin Zhang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Long Xie
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Zhongyu Wang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Peng Gong
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| |
Collapse
|
33
|
Limited ATF4 Expression in Degenerating Retinas with Ongoing ER Stress Promotes Photoreceptor Survival in a Mouse Model of Autosomal Dominant Retinitis Pigmentosa. PLoS One 2016; 11:e0154779. [PMID: 27144303 PMCID: PMC4856272 DOI: 10.1371/journal.pone.0154779] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 04/19/2016] [Indexed: 02/07/2023] Open
Abstract
T17M rhodopsin expression in rod photoreceptors leads to severe retinal degeneration and is associated with the activation of ER stress related Unfolded Protein Response (UPR) signaling. Here, we show a novel role of a UPR transcription factor, ATF4, in photoreceptor cellular pathology. We demonstrated a pro-death role for ATF4 overexpression during autosomal dominant retinitis pigmentosa (ADRP). Based on our results in ATF4 knockout mice and adeno-associated viral (AAV) delivery of ATF4 to the retina, we validated a novel therapeutic approach targeting ATF4 over the course of retinal degeneration. In T17M rhodopsin retinas, we observed ATF4 overexpression concomitantly with reduction of p62 and elevation of p53 levels. These molecular alterations, together with increased CHOP and caspase-3/7 activity, possibly contributed to the mechanism of photoreceptor cell loss. Conversely, ATF4 knockdown retarded retinal degeneration in 1-month-old T17M Rhodopsin mice and promoted photoreceptor survival, as measured by scotopic and photopic ERGs and photoreceptor nuclei row counts. Similarly, ATF4 knockdown also markedly delayed retinal degeneration in 3-month-old ADRP animals. This delay was accompanied by a dramatic decrease in UPR signaling, the launching of anti-oxidant defense, initiation of autophagy, and improvement of rhodopsin biosynthesis which together perhaps combat the cellular stress associated with T17M rhodopsin. Our data indicate that augmented ATF4 signals during retinal degeneration plays a cytotoxic role by triggering photoreceptor cell death. Future ADRP therapy regulating ATF4 expression can be developed to treat retinal degenerative disorders associated with activated UPR.
Collapse
|
34
|
Liang KL, O'Connor C, Veiga JP, McCarthy TV, Keeshan K. TRIB2 regulates normal and stress-induced thymocyte proliferation. Cell Discov 2016; 2:15050. [PMID: 27462446 PMCID: PMC4860960 DOI: 10.1038/celldisc.2015.50] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 12/10/2015] [Indexed: 12/12/2022] Open
Abstract
TRIB2, a serine/threonine pseudokinase identified as an oncogene, is expressed at high levels in the T-cell compartment of hematopoiesis. The proliferation of developing thymocytes is tightly controlled to prevent leukemic transformation of T cells. Here we examine Trib2 loss in murine hematopoiesis under steady state and proliferative stress conditions, including genotoxic and oncogenic stress. Trib2−/− developing thymocytes show increased proliferation, and Trib2−/− mice have significantly higher thymic cellularity at steady state. During stress hematopoiesis, Trib2−/− developing thymocytes undergo accelerated proliferation and demonstrate hypersensitivity to 5-fluorouracil (5-FU)-induced cell death. Despite the increased cell death post 5-FU-induced proliferative stress, Trib2−/− mice exhibit accelerated thymopoietic recovery post treatment due to increased cell division kinetics of developing thymocytes. The increased proliferation in Trib2−/− thymocytes was exacerbated under oncogenic stress. In an experimental murine T-cell acute lymphoblastic leukemia (T-ALL) model, Trib2−/− mice had reduced latency in vivo, which associated with impaired MAP kinase (MAPK) activation. High and low expression levels of Trib2 correlate with immature and mature subtypes of human T-ALL, respectively, and associate with MAPK. Thus, TRIB2 emerges as a novel regulator of thymocyte cellular proliferation, important for the thymopoietic response to genotoxic and oncogenic stress, and possessing tumor suppressor function.
Collapse
Affiliation(s)
- Kai Ling Liang
- Paul O'Gorman Leukemia Research Centre, Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK; School of Biochemistry and Cell Biology, University College Cork, Cork, Ireland
| | - Caitriona O'Connor
- Paul O'Gorman Leukemia Research Centre, Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow , Glasgow, UK
| | - J Pedro Veiga
- Paul O'Gorman Leukemia Research Centre, Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow , Glasgow, UK
| | - Tommie V McCarthy
- School of Biochemistry and Cell Biology, University College Cork , Cork, Ireland
| | - Karen Keeshan
- Paul O'Gorman Leukemia Research Centre, Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow , Glasgow, UK
| |
Collapse
|
35
|
Ochieng J, Nangami GN, Ogunkua O, Miousse IR, Koturbash I, Odero-Marah V, McCawley LJ, Nangia-Makker P, Ahmed N, Luqmani Y, Chen Z, Papagerakis S, Wolf GT, Dong C, Zhou BP, Brown DG, Colacci AM, Hamid RA, Mondello C, Raju J, Ryan EP, Woodrick J, Scovassi AI, Singh N, Vaccari M, Roy R, Forte S, Memeo L, Salem HK, Amedei A, Al-Temaimi R, Al-Mulla F, Bisson WH, Eltom SE. The impact of low-dose carcinogens and environmental disruptors on tissue invasion and metastasis. Carcinogenesis 2015; 36 Suppl 1:S128-59. [PMID: 26106135 DOI: 10.1093/carcin/bgv034] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The purpose of this review is to stimulate new ideas regarding low-dose environmental mixtures and carcinogens and their potential to promote invasion and metastasis. Whereas a number of chapters in this review are devoted to the role of low-dose environmental mixtures and carcinogens in the promotion of invasion and metastasis in specific tumors such as breast and prostate, the overarching theme is the role of low-dose carcinogens in the progression of cancer stem cells. It is becoming clearer that cancer stem cells in a tumor are the ones that assume invasive properties and colonize distant organs. Therefore, low-dose contaminants that trigger epithelial-mesenchymal transition, for example, in these cells are of particular interest in this review. This we hope will lead to the collaboration between scientists who have dedicated their professional life to the study of carcinogens and those whose interests are exclusively in the arena of tissue invasion and metastasis.
Collapse
Affiliation(s)
- Josiah Ochieng
- Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, TN 37208, USA, Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA, Department of Biology/Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA 30314, USA, Department of Cancer Biology, Vanderbilt University, Nashville, TN 37232, USA, Department of Pathology, Wayne State University, Detroit, MI 48201, USA, Department of Obstetrics and Gynecology, University of Melbourne, Melbourne, Victoria, Australia, Faculty of Pharmacy, Department of Pathology, Kuwait University, Safat 13110, Kuwait, Department of Otolaryngology, University of Michigan Medical College, Ann Arbor, MI 48109, USA, Department of Molecular & Cellular Biochemistry, University of Kentucky, Lexington, KY 40506, USA, Department of Environmental and Radiological Health Sciences/Food Science and Human Nutrition, College of Veterinary Medicine and Biomedical Sciences, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523-1680, USA, Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna 40126, Italy, Faculty of Medicine and Health Sciences, University Putra, Serdang, Selangor 43400, Malaysia, Istituto di Genetica Molecolare, CNR, via Abbiategrasso 207, 27100 Pavia, Italy, Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario K1A0K9, Canada, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA, Centre for Advanced Research, King George's Medical University, Chowk, Lucknow, Uttar Pradesh 226003, India, Mediterranean Institute of Oncology, Viagrande 95029, Italy, Urology Department, kasr Al-Ainy School of Medicine, Cairo University, El Manial, Cairo 12515, Egypt, Department of Experimental and
| | - Gladys N Nangami
- Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, TN 37208, USA, Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA, Department of Biology/Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA 30314, USA, Department of Cancer Biology, Vanderbilt University, Nashville, TN 37232, USA, Department of Pathology, Wayne State University, Detroit, MI 48201, USA, Department of Obstetrics and Gynecology, University of Melbourne, Melbourne, Victoria, Australia, Faculty of Pharmacy, Department of Pathology, Kuwait University, Safat 13110, Kuwait, Department of Otolaryngology, University of Michigan Medical College, Ann Arbor, MI 48109, USA, Department of Molecular & Cellular Biochemistry, University of Kentucky, Lexington, KY 40506, USA, Department of Environmental and Radiological Health Sciences/Food Science and Human Nutrition, College of Veterinary Medicine and Biomedical Sciences, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523-1680, USA, Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna 40126, Italy, Faculty of Medicine and Health Sciences, University Putra, Serdang, Selangor 43400, Malaysia, Istituto di Genetica Molecolare, CNR, via Abbiategrasso 207, 27100 Pavia, Italy, Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario K1A0K9, Canada, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA, Centre for Advanced Research, King George's Medical University, Chowk, Lucknow, Uttar Pradesh 226003, India, Mediterranean Institute of Oncology, Viagrande 95029, Italy, Urology Department, kasr Al-Ainy School of Medicine, Cairo University, El Manial, Cairo 12515, Egypt, Department of Experimental and
| | - Olugbemiga Ogunkua
- Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, TN 37208, USA, Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA, Department of Biology/Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA 30314, USA, Department of Cancer Biology, Vanderbilt University, Nashville, TN 37232, USA, Department of Pathology, Wayne State University, Detroit, MI 48201, USA, Department of Obstetrics and Gynecology, University of Melbourne, Melbourne, Victoria, Australia, Faculty of Pharmacy, Department of Pathology, Kuwait University, Safat 13110, Kuwait, Department of Otolaryngology, University of Michigan Medical College, Ann Arbor, MI 48109, USA, Department of Molecular & Cellular Biochemistry, University of Kentucky, Lexington, KY 40506, USA, Department of Environmental and Radiological Health Sciences/Food Science and Human Nutrition, College of Veterinary Medicine and Biomedical Sciences, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523-1680, USA, Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna 40126, Italy, Faculty of Medicine and Health Sciences, University Putra, Serdang, Selangor 43400, Malaysia, Istituto di Genetica Molecolare, CNR, via Abbiategrasso 207, 27100 Pavia, Italy, Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario K1A0K9, Canada, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA, Centre for Advanced Research, King George's Medical University, Chowk, Lucknow, Uttar Pradesh 226003, India, Mediterranean Institute of Oncology, Viagrande 95029, Italy, Urology Department, kasr Al-Ainy School of Medicine, Cairo University, El Manial, Cairo 12515, Egypt, Department of Experimental and
| | - Isabelle R Miousse
- Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Igor Koturbash
- Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Valerie Odero-Marah
- Department of Biology/Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA 30314, USA
| | - Lisa J McCawley
- Department of Cancer Biology, Vanderbilt University, Nashville, TN 37232, USA
| | | | - Nuzhat Ahmed
- Department of Obstetrics and Gynecology, University of Melbourne, Melbourne, Victoria, Australia
| | - Yunus Luqmani
- Faculty of Pharmacy, Department of Pathology, Kuwait University, Safat 13110, Kuwait
| | - Zhenbang Chen
- Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, TN 37208, USA, Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA, Department of Biology/Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA 30314, USA, Department of Cancer Biology, Vanderbilt University, Nashville, TN 37232, USA, Department of Pathology, Wayne State University, Detroit, MI 48201, USA, Department of Obstetrics and Gynecology, University of Melbourne, Melbourne, Victoria, Australia, Faculty of Pharmacy, Department of Pathology, Kuwait University, Safat 13110, Kuwait, Department of Otolaryngology, University of Michigan Medical College, Ann Arbor, MI 48109, USA, Department of Molecular & Cellular Biochemistry, University of Kentucky, Lexington, KY 40506, USA, Department of Environmental and Radiological Health Sciences/Food Science and Human Nutrition, College of Veterinary Medicine and Biomedical Sciences, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523-1680, USA, Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna 40126, Italy, Faculty of Medicine and Health Sciences, University Putra, Serdang, Selangor 43400, Malaysia, Istituto di Genetica Molecolare, CNR, via Abbiategrasso 207, 27100 Pavia, Italy, Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario K1A0K9, Canada, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA, Centre for Advanced Research, King George's Medical University, Chowk, Lucknow, Uttar Pradesh 226003, India, Mediterranean Institute of Oncology, Viagrande 95029, Italy, Urology Department, kasr Al-Ainy School of Medicine, Cairo University, El Manial, Cairo 12515, Egypt, Department of Experimental and
| | - Silvana Papagerakis
- Department of Otolaryngology, University of Michigan Medical College, Ann Arbor, MI 48109, USA
| | - Gregory T Wolf
- Department of Otolaryngology, University of Michigan Medical College, Ann Arbor, MI 48109, USA
| | - Chenfang Dong
- Department of Molecular & Cellular Biochemistry, University of Kentucky, Lexington, KY 40506, USA
| | - Binhua P Zhou
- Department of Molecular & Cellular Biochemistry, University of Kentucky, Lexington, KY 40506, USA
| | - Dustin G Brown
- Department of Environmental and Radiological Health Sciences/Food Science and Human Nutrition, College of Veterinary Medicine and Biomedical Sciences, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523-1680, USA
| | - Anna Maria Colacci
- Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna 40126, Italy
| | - Roslida A Hamid
- Faculty of Medicine and Health Sciences, University Putra, Serdang, Selangor 43400, Malaysia
| | - Chiara Mondello
- Istituto di Genetica Molecolare, CNR, via Abbiategrasso 207, 27100 Pavia, Italy
| | - Jayadev Raju
- Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario K1A0K9, Canada
| | - Elizabeth P Ryan
- Department of Environmental and Radiological Health Sciences/Food Science and Human Nutrition, College of Veterinary Medicine and Biomedical Sciences, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523-1680, USA
| | - Jordan Woodrick
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - A Ivana Scovassi
- Istituto di Genetica Molecolare, CNR, via Abbiategrasso 207, 27100 Pavia, Italy
| | - Neetu Singh
- Centre for Advanced Research, King George's Medical University, Chowk, Lucknow, Uttar Pradesh 226003, India
| | - Monica Vaccari
- Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna 40126, Italy
| | - Rabindra Roy
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Stefano Forte
- Mediterranean Institute of Oncology, Viagrande 95029, Italy
| | - Lorenzo Memeo
- Mediterranean Institute of Oncology, Viagrande 95029, Italy
| | - Hosni K Salem
- Urology Department, kasr Al-Ainy School of Medicine, Cairo University, El Manial, Cairo 12515, Egypt
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Firenze, Firenze 50134, Italy and
| | - Rabeah Al-Temaimi
- Faculty of Pharmacy, Department of Pathology, Kuwait University, Safat 13110, Kuwait
| | - Fahd Al-Mulla
- Faculty of Pharmacy, Department of Pathology, Kuwait University, Safat 13110, Kuwait
| | - William H Bisson
- Environmental and Molecular Toxicology, Environmental Health Sciences Center, Oregon State University, Corvallis, OR 97331, USA
| | - Sakina E Eltom
- Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, TN 37208, USA, Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA, Department of Biology/Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA 30314, USA, Department of Cancer Biology, Vanderbilt University, Nashville, TN 37232, USA, Department of Pathology, Wayne State University, Detroit, MI 48201, USA, Department of Obstetrics and Gynecology, University of Melbourne, Melbourne, Victoria, Australia, Faculty of Pharmacy, Department of Pathology, Kuwait University, Safat 13110, Kuwait, Department of Otolaryngology, University of Michigan Medical College, Ann Arbor, MI 48109, USA, Department of Molecular & Cellular Biochemistry, University of Kentucky, Lexington, KY 40506, USA, Department of Environmental and Radiological Health Sciences/Food Science and Human Nutrition, College of Veterinary Medicine and Biomedical Sciences, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523-1680, USA, Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna 40126, Italy, Faculty of Medicine and Health Sciences, University Putra, Serdang, Selangor 43400, Malaysia, Istituto di Genetica Molecolare, CNR, via Abbiategrasso 207, 27100 Pavia, Italy, Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario K1A0K9, Canada, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA, Centre for Advanced Research, King George's Medical University, Chowk, Lucknow, Uttar Pradesh 226003, India, Mediterranean Institute of Oncology, Viagrande 95029, Italy, Urology Department, kasr Al-Ainy School of Medicine, Cairo University, El Manial, Cairo 12515, Egypt, Department of Experimental and
| |
Collapse
|
36
|
Abstract
Over the past few decades, understandings and evidences concerning the role of endoplasmic reticulum (ER) stress in deciding the cell fate have been constantly growing. Generally, during ER stress, the signal transductions are mainly conducted by three ER stress transducers: protein kinase R-like endoplasmic reticulum kinase (PERK), inositol-requiring kinase 1 (IRE1) and activating transcription factor 6 (ATF6). Consequently, the harmful stimuli from the ER stress transducers induce apoptosis and autophagy, which share several crosstalks and eventually decide the cell fate. The dominance of apoptosis or autophagy induced by ER stress depends on the type and degree of the stimuli. When ER stress is too severe and prolonged, apoptosis is induced to eliminate the damaged cells; however, when stimuli are mild, cell survival is promoted to maintain normal physiological functions by inducing autophagy. Although all the three pathways participate in ER stress-induced apoptosis and autophagy, PERK shows several unique characteristics by interacting with some specific downstream effectors. Notably, there are some preliminary findings on PERK-dependent mechanisms switching autophagy and apoptosis. In this review, we particularly focused on the novel, intriguing and complicated role of PERK in ER stress-decided cell fate, and also discussed more roles of PERK in restoring cellular homeostasis. However, more in-depth knowledge of PERK in the future would facilitate our understanding about many human diseases and benefit in searching for new molecular therapeutic targets.
Collapse
|
37
|
Carnero A, Blanco-Aparicio C, Kondoh H, Lleonart ME, Martinez-Leal JF, Mondello C, Ivana Scovassi A, Bisson WH, Amedei A, Roy R, Woodrick J, Colacci A, Vaccari M, Raju J, Al-Mulla F, Al-Temaimi R, Salem HK, Memeo L, Forte S, Singh N, Hamid RA, Ryan EP, Brown DG, Wise JP, Wise SS, Yasaei H. Disruptive chemicals, senescence and immortality. Carcinogenesis 2015; 36 Suppl 1:S19-37. [PMID: 26106138 PMCID: PMC4565607 DOI: 10.1093/carcin/bgv029] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 08/04/2014] [Accepted: 08/05/2014] [Indexed: 12/16/2022] Open
Abstract
Carcinogenesis is thought to be a multistep process, with clonal evolution playing a central role in the process. Clonal evolution involves the repeated 'selection and succession' of rare variant cells that acquire a growth advantage over the remaining cell population through the acquisition of 'driver mutations' enabling a selective advantage in a particular micro-environment. Clonal selection is the driving force behind tumorigenesis and possesses three basic requirements: (i) effective competitive proliferation of the variant clone when compared with its neighboring cells, (ii) acquisition of an indefinite capacity for self-renewal, and (iii) establishment of sufficiently high levels of genetic and epigenetic variability to permit the emergence of rare variants. However, several questions regarding the process of clonal evolution remain. Which cellular processes initiate carcinogenesis in the first place? To what extent are environmental carcinogens responsible for the initiation of clonal evolution? What are the roles of genotoxic and non-genotoxic carcinogens in carcinogenesis? What are the underlying mechanisms responsible for chemical carcinogen-induced cellular immortality? Here, we explore the possible mechanisms of cellular immortalization, the contribution of immortalization to tumorigenesis and the mechanisms by which chemical carcinogens may contribute to these processes.
Collapse
Affiliation(s)
- Amancio Carnero
- *To whom correspondence should be addressed. Tel: +34955923111; Fax: +34955923101;
| | - Carmen Blanco-Aparicio
- Spanish National Cancer Research Center, Experimental Therapuetics Department, Melchor Fernandez Almagro, 3, 28029 Madrid, Spain
| | - Hiroshi Kondoh
- Department of Geriatric Medicine, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku Kyoto 606-8507, Japan
| | - Matilde E. Lleonart
- Institut De Recerca Hospital Vall D’Hebron, Passeig Vall d’Hebron, 119–129, 08035 Barcelona, Spain
| | | | - Chiara Mondello
- Istituto di Genetica Molecolare, CNR, Via Abbiategrasso 207, 27100 Pavia, Italy
| | - A. Ivana Scovassi
- Istituto di Genetica Molecolare, CNR, Via Abbiategrasso 207, 27100 Pavia, Italy
| | - William H. Bisson
- Environmental and Molecular Toxicology, Environmental Health Science Center, Oregon State University, Corvallis, OR 97331, USA
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Firenze, Italy, Florence 50134, Italy
| | - Rabindra Roy
- Molecular Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Jordan Woodrick
- Molecular Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Annamaria Colacci
- Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna 40126, Italy
| | - Monica Vaccari
- Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna 40126, Italy
| | - Jayadev Raju
- Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario K1A0K9, Canada
| | - Fahd Al-Mulla
- Department of Pathology, Kuwait University, Safat 13110, Kuwait
| | | | - Hosni K. Salem
- Urology Department, kasr Al-Ainy School of Medicine, Cairo University, El Manial, Cairo 12515, Egypt
| | - Lorenzo Memeo
- Mediterranean Institute of Oncology, Viagrande 95029, Italy
| | - Stefano Forte
- Mediterranean Institute of Oncology, Viagrande 95029, Italy
| | - Neetu Singh
- Centre for Advanced Research, King George’s Medical University, Chowk, Lucknow, Uttar Pradesh 226003, India
| | - Roslida A. Hamid
- Department of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor 43400, Malaysia
| | - Elizabeth P. Ryan
- Department of Environmental and Radiological Health Sciences, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523-1680, USA
| | - Dustin G. Brown
- Department of Environmental and Radiological Health Sciences, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523-1680, USA
| | - John Pierce Wise
- The Wise Laboratory of Environmental and Genetic Toxicology, Maine Center for Toxicology and Environmental Health, Department of Applied Medical Sciences, University of Southern Maine, 96 Falmouth Street, Portland, ME 04104, USA and
| | - Sandra S. Wise
- The Wise Laboratory of Environmental and Genetic Toxicology, Maine Center for Toxicology and Environmental Health, Department of Applied Medical Sciences, University of Southern Maine, 96 Falmouth Street, Portland, ME 04104, USA and
| | - Hemad Yasaei
- Brunel Institute of Cancer Genetics and Pharmacogenomics, Health and Environment Theme, Institute of Environment, Health and Societies, Brunel University London, Kingston Lane, Uxbridge, UB8 3PH, UK
| |
Collapse
|
38
|
Mehta A, Zhang L, Boufraqech M, Zhang Y, Patel D, Shen M, Kebebew E. Carfilzomib is an effective anticancer agent in anaplastic thyroid cancer. Endocr Relat Cancer 2015; 22:319-29. [PMID: 25972243 DOI: 10.1530/erc-14-0510] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Anaplastic thyroid cancer (ATC) is one of the most aggressive human malignancies. Currently, there is no standard or effective therapy for ATC. Drug repurposing for cancer treatment is an emerging approach for identifying compounds that may have antineoplastic effects. The aim of this study was to use high-throughput drug library screening to identify and subsequently validate novel therapeutic agents with anticancer effects in ATC. We performed quantitative high-throughput screening (qHTS) in ATC cell lines (SW-1736, 8505C, and C-643), using a compound library of 3282 drugs. qHTS identified 100 compounds that were active in all three ATC cell lines. Proteasome inhibitors were one of the most active drug categories according to enrichment analysis. Of the three proteasome inhibitors screened, a second-generation proteasome inhibitor, carfilzomib, was the most active. Treatment of ATC cells with carfilzomib significantly inhibited cellular proliferation and induced G2/M cell cycle arrest and caspase-dependent apoptosis. Mechanistically, carfilzomib increased expression of p27 (CDKN1B) and decreased expression of the anti-apoptotic protein ATF4. Pretreatment with carfilzomib reduced in vivo metastases (lung, bone, liver, and kidney) and disease progression, and decreased N-cadherin expression. Carfilzomib treatment of mice with established, widely metastatic disease significantly increased their survival, without significant toxicity. Our findings support the use or clinical study of carfilzomib as a therapeutic option in patients with advanced and metastatic ATC.
Collapse
Affiliation(s)
- Amit Mehta
- Endocrine Oncology BranchNational Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USAGeisel School of Medicine at DartmouthHanover, New Hampshire 03755, USANational Institutes of HealthNational Center for Advancing Translational Sciences, Bethesda, Maryland, USA Endocrine Oncology BranchNational Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USAGeisel School of Medicine at DartmouthHanover, New Hampshire 03755, USANational Institutes of HealthNational Center for Advancing Translational Sciences, Bethesda, Maryland, USA
| | - Lisa Zhang
- Endocrine Oncology BranchNational Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USAGeisel School of Medicine at DartmouthHanover, New Hampshire 03755, USANational Institutes of HealthNational Center for Advancing Translational Sciences, Bethesda, Maryland, USA
| | - Myriem Boufraqech
- Endocrine Oncology BranchNational Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USAGeisel School of Medicine at DartmouthHanover, New Hampshire 03755, USANational Institutes of HealthNational Center for Advancing Translational Sciences, Bethesda, Maryland, USA
| | - Yaqin Zhang
- Endocrine Oncology BranchNational Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USAGeisel School of Medicine at DartmouthHanover, New Hampshire 03755, USANational Institutes of HealthNational Center for Advancing Translational Sciences, Bethesda, Maryland, USA
| | - Dhaval Patel
- Endocrine Oncology BranchNational Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USAGeisel School of Medicine at DartmouthHanover, New Hampshire 03755, USANational Institutes of HealthNational Center for Advancing Translational Sciences, Bethesda, Maryland, USA
| | - Min Shen
- Endocrine Oncology BranchNational Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USAGeisel School of Medicine at DartmouthHanover, New Hampshire 03755, USANational Institutes of HealthNational Center for Advancing Translational Sciences, Bethesda, Maryland, USA
| | - Electron Kebebew
- Endocrine Oncology BranchNational Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USAGeisel School of Medicine at DartmouthHanover, New Hampshire 03755, USANational Institutes of HealthNational Center for Advancing Translational Sciences, Bethesda, Maryland, USA
| |
Collapse
|
39
|
Li Z, Shi K, Guan L, Jiang Q, Yang Y, Xu C. Activation of p53 by sodium selenite switched human leukemia NB4 cells from autophagy to apoptosis. Oncol Res 2015; 21:325-31. [PMID: 25198662 DOI: 10.3727/096504014x14024160459087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
It was revealed by our previous research that sodium selenite repressed autophagy accompanied by the induction of apoptosis in human leukemia NB4 cells. The inhibition of autophagy exerted a facilitative effect on apoptosis. In the present study, we further explored the mechanisms underlying the switch from autophagy to apoptosis and elucidated p53 played a key role. Selenite induced phosphorylation of p53 at the vital site Ser15 via p38MAPK and ERK. Subsequently p53 dissociated with its inhibitory protein mouse double minute 2 (MDM2). Meanwhile, the nucleolar protein B23 transferred from the nucleolus to the nucleoplasm and associated with MDM2, probably stabilizing p53. The active p53 participated in the decrease of autophagic protein Beclin-1 and LC-3, as well as activation of apoptosis-related caspases. Furthermore, in p53 mutant U937 leukemia cells, selenite could not elicit such a switch from autophagy to apoptosis, laying emphasis on the crucial role p53 played in this process.
Collapse
Affiliation(s)
- Zhushi Li
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | | | | | | | | | | |
Collapse
|
40
|
Luís A, Martins JD, Silva A, Ferreira I, Cruz MT, Neves BM. Oxidative stress-dependent activation of the eIF2α–ATF4 unfolded protein response branch by skin sensitizer 1-fluoro-2,4-dinitrobenzene modulates dendritic-like cell maturation and inflammatory status in a biphasic manner [corrected]. Free Radic Biol Med 2014; 77:217-29. [PMID: 25236743 DOI: 10.1016/j.freeradbiomed.2014.09.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Revised: 09/02/2014] [Accepted: 09/03/2014] [Indexed: 01/10/2023]
Abstract
The pathogenesis of allergic contact dermatitis, the most common manifestation of immunotoxicity in humans, is intimately connected to hapten-induced maturation of dendritic cells (DC). The molecular mechanisms driving this maturational program are not completely known; however, initial danger signals such as the generation of reactive oxygen species (ROS) were shown to play a critical role. Recent evidence linking ROS production, endoplasmic reticulum (ER) stress, and the pathogenesis of several inflammatory diseases led us to analyze, in the present work, the ability of the skin sensitizer 1-fluoro-2,4-dinitrobenzene (DNFB) to evoke ER stress in DC-like THP-1 cells and the concomitant consequences to their immunobiology. We found that DNFB triggers a ROS-dependent activation of the PERK-eIFα-ATF4 unfolded protein response (UPR) branch conferring cytoprotection and modulating the maturation/proinflammatory cell status in a biphasic manner. Early DNFB induction of ATF4 positively modulates autophagy-related genes MAP1LC3B and ATG3 and stabilizes the transcription factor Nrf2, causing a strong induction of the HMOX1-detoxifying gene. Moreover, we observed that in a first phase, DNFB-induced ATF4 upregulates IL8 mRNA levels while blocking CD86, IL1B, IL12B, and CXL10 transcription. Later, following ATF4 decay, HMOX1 and IL8 transcription drastically decrease and CD86, IL1B, and Il12B are upregulated. Overall, our results evidence a connection between sensitizer-induced redox imbalance and the establishment of ER stress in DC-like cells and provide new insights into the role of UPR effectors such as ATF4 to the complex DC maturational program.
Collapse
Affiliation(s)
- Andreia Luís
- Department of Chemistry, Mass Spectrometry Centre, QOPNA, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - João Demétrio Martins
- Centre for Neuroscience and Cell Biology, University of Coimbra 3004-517, Coimbra, Portugal; Faculty of Pharmacy, University of Coimbra 3004-517, Coimbra, Portugal
| | - Ana Silva
- Centre for Neuroscience and Cell Biology, University of Coimbra 3004-517, Coimbra, Portugal
| | - Isabel Ferreira
- Centre for Neuroscience and Cell Biology, University of Coimbra 3004-517, Coimbra, Portugal
| | - Maria Teresa Cruz
- Centre for Neuroscience and Cell Biology, University of Coimbra 3004-517, Coimbra, Portugal; Faculty of Pharmacy, University of Coimbra 3004-517, Coimbra, Portugal
| | - Bruno Miguel Neves
- Department of Chemistry, Mass Spectrometry Centre, QOPNA, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal; Centre for Neuroscience and Cell Biology, University of Coimbra 3004-517, Coimbra, Portugal.
| |
Collapse
|
41
|
The p38 MAPK-regulated PKD1/CREB/Bcl-2 pathway contributes to selenite-induced colorectal cancer cell apoptosis in vitro and in vivo. Cancer Lett 2014; 354:189-99. [DOI: 10.1016/j.canlet.2014.08.009] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Revised: 08/05/2014] [Accepted: 08/06/2014] [Indexed: 12/20/2022]
|
42
|
Evangelisti C, Evangelisti C, Chiarini F, Lonetti A, Buontempo F, Neri LM, McCubrey JA, Martelli AM. Autophagy in acute leukemias: a double-edged sword with important therapeutic implications. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2014; 1853:14-26. [PMID: 25284725 DOI: 10.1016/j.bbamcr.2014.09.023] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 09/25/2014] [Accepted: 09/26/2014] [Indexed: 12/20/2022]
Abstract
Macroautophagy, usually referred to as autophagy, is a degradative pathway wherein cytoplasmatic components such as aggregated/misfolded proteins and organelles are engulfed within double-membrane vesicles (autophagosomes) and then delivered to lysosomes for degradation. Autophagy plays an important role in the regulation of numerous physiological functions, including hematopoiesis, through elimination of aggregated/misfolded proteins, and damaged/superfluous organelles. The catabolic products of autophagy (amino acids, fatty acids, nucleotides) are released into the cytosol from autophagolysosomes and recycled into bio-energetic pathways. Therefore, autophagy allows cells to survive starvation and other unfavorable conditions, including hypoxia, heat shock, and microbial pathogens. Nevertheless, depending upon the cell context and functional status, autophagy can also serve as a death mechanism. The cohort of proteins that constitute the autophagy machinery function in a complex, multistep biochemical pathway which has been partially identified over the past decade. Dysregulation of autophagy may contribute to the development of several disorders, including acute leukemias. In this kind of hematologic malignancies, autophagy can either act as a chemo-resistance mechanism or have tumor suppressive functions, depending on the context. Therefore, strategies exploiting autophagy, either for activating or inhibiting it, could find a broad application for innovative treatment of acute leukemias and could significantly contribute to improved clinical outcomes. These aspects are discussed here after a brief introduction to the autophagic molecular machinery and its roles in hematopoiesis.
Collapse
Affiliation(s)
- Cecilia Evangelisti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Camilla Evangelisti
- Institute of Molecular Genetics, National Research Council, Rizzoli Orthopedic Institute, Bologna, Italy
| | - Francesca Chiarini
- Institute of Molecular Genetics, National Research Council, Rizzoli Orthopedic Institute, Bologna, Italy
| | - Annalisa Lonetti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Francesca Buontempo
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Luca M Neri
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - James A McCubrey
- Department of Microbiology & Immunology, Brody School of Medicine, East Carolina University, Greenville, NC, USA
| | - Alberto M Martelli
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.
| |
Collapse
|
43
|
Moreno E, Doughty-Shenton D, Plano D, Font M, Encío I, Palop JA, Sanmartín C. A dihydroselenoquinazoline inhibits S6 ribosomal protein signalling, induces apoptosis and inhibits autophagy in MCF-7 cells. Eur J Pharm Sci 2014; 63:87-95. [DOI: 10.1016/j.ejps.2014.06.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 06/12/2014] [Accepted: 06/29/2014] [Indexed: 11/17/2022]
|
44
|
Wang Y, Lin B, Wu J, Zhang H, Wu B. Metformin inhibits the proliferation of A549/CDDP cells by activating p38 mitogen-activated protein kinase. Oncol Lett 2014; 8:1269-1274. [PMID: 25120704 PMCID: PMC4114589 DOI: 10.3892/ol.2014.2270] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 05/23/2014] [Indexed: 12/29/2022] Open
Abstract
Metformin (Met) has been widely used in hypoglycemic therapy, and it is also able to reduce the incidence of tumors and tumor-related mortality. The present study investigated whether Met could inhibit the proliferation of lung cancer cells and enhance the sensitivity of a cisplatin-resistant lung cancer A549/CDDP cell line to cisplatin. It was found that Met treatment inhibited the proliferation of different lung cancer cells. Met inhibited the cell cycle of the A549/CDDP cells and induced apoptosis. Upon Met treatment, the A549/CDDP cells were arrested at the G1 phase. The apoptosis of the A549/CDDP cells was confirmed by the appearance of apoptotic bodies in cells stained with Hoechst 33258, and by the cleavage of BH3 interacting-domain death agonist and poly (ADP-ribose) polymerase. Furthermore, results showed that the phosphorylation level of p38 mitogen-activated protein kinase (MAPK) was increased after Met treatment. The p38 MAPK inhibitor, SB203580, significantly blocked Met-induced apoptosis in the A549/CDDP cells. It was further demonstrated that Met could enhance the sensitivity of the A549/CDDP cells to cisplatin. In summary, the present study identified Met as a drug sensitizer that could improve the treatment effect of cisplatin in cisplatin-resistant lung cancers.
Collapse
Affiliation(s)
- Yajun Wang
- Institute of Respiratory Diseases, Affiliated Hospital of Guangdong Medical College, Zhanjiang, Guangdong 524023, P.R. China
| | - Biyun Lin
- Department of Biochemistry and Molecular Biology, Guangdong Medical College, Zhanjiang, Guangdong 524023, P.R. China
| | - Jun Wu
- Institute of Respiratory Diseases, Affiliated Hospital of Guangdong Medical College, Zhanjiang, Guangdong 524023, P.R. China
| | - Haitao Zhang
- Department of Biochemistry and Molecular Biology, Guangdong Medical College, Zhanjiang, Guangdong 524023, P.R. China
| | - Bin Wu
- Institute of Respiratory Diseases, Affiliated Hospital of Guangdong Medical College, Zhanjiang, Guangdong 524023, P.R. China
| |
Collapse
|
45
|
Jiang Q, Li F, Shi K, Wu P, An J, Yang Y, Xu C. Involvement of p38 in signal switching from autophagy to apoptosis via the PERK/eIF2α/ATF4 axis in selenite-treated NB4 cells. Cell Death Dis 2014; 5:e1270. [PMID: 24874742 PMCID: PMC4047911 DOI: 10.1038/cddis.2014.200] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 04/04/2014] [Accepted: 04/08/2014] [Indexed: 02/07/2023]
Abstract
Selenite has emerged as an optional chemotherapeutic agent for hematological malignancies. Autophagy and apoptosis are both engaged in selenite-induced cell death. In a previous report, we have identified heat shock protein 90 (Hsp90) as a critical modulator of the balance between autophagy and apoptosis in selenite-treated leukemia cells. However, the mechanisms by which selenite mediates the crosstalk between autophagy and apoptosis remain largely unknown. Herein, we demonstrate that the endoplasmic reticulum (ER) stress-related PERK/eIF2α/ATF4 pathway and p38 are core modules for the selenite-induced switch to apoptosis from autophagy. We found that selenite activated PERK and eIF2α/ATF4 downstream to promote apoptosis. During this progression, p38 was dissociated from PERK-inhibiting Hsp90 and became autophosphorylated. Then, activated p38 further enhanced the docking of activating transcription factor 4 (ATF4) onto the CHOP (CCAAT/enhancer-binding protein homologous protein) promoter via eIF2α to enhance apoptosis. We also found that activated p38 suppressed the phosphorylation of eIF4E that directed ATF4 to bind to the MAP1LC3B (microtubule-associated protein 1 light chain 3B) promoter. Because of the deactivation of eIF4E, the association of ATF4 with the MAP1LC3B promoter was inhibited, and autophagy was compromised. Intriguingly, p53 played important roles in mediating the p38-mediated regulation of eIF2α and eIF4E. When activated by p38, p53 induced the phosphorylation of eIF2α and the dephosphorylation of eIF4E, particularly in the nucleus where the ATF4 transcription factor was modulated, ultimately resulting in differential expression of CHOP and LC3. Moreover, selenite exhibited potent antitumor effects in vivo. In an NB4 cell xenograft model, selenite induced apoptosis and hampered autophagy. In addition, related signaling proteins demonstrated similar changes to those observed in vitro. These data suggest that selenite may be a candidate drug for leukemia therapy.
Collapse
Affiliation(s)
- Q Jiang
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - F Li
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - K Shi
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - P Wu
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - J An
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Y Yang
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - C Xu
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| |
Collapse
|