1
|
Obara N, Kyakumoto S, Yamaguchi S, Yamada H, Ishisaki A, Kamo M. Disruption of CADM1-dependent cell-cell adhesion in human oral squamous cell carcinoma cells results in tumor progression, possibly through an increase of MMP-2 and MMP-9 expression. J Oral Biosci 2024; 66:151-159. [PMID: 38030062 DOI: 10.1016/j.job.2023.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/16/2023] [Accepted: 11/17/2023] [Indexed: 12/01/2023]
Abstract
OBJECTIVES This study aimed to clarify the molecular mechanism underlying the higher invasion and metastasis abilities of LMF4 cells than those of HSC-3 cells by comparing the expression levels of the tumor suppressor factor, cell adhesion molecule 1 (CADM1). METHODS We explored 1) whether CADM1 expression level was downregulated in LMF4 cells compared with HSC-3 cells, 2) whether CADM1 expression knockdown increased the expression levels of matrix metalloproteinases (MMPs), 3) the exact cellular signaling pathways responsible for increased MMP expression after knockdown of CADM1 expression, and 4) whether disruption of CADM1-dependent HSC-3 cell adhesion increased the migratory and invasive activities of HSC-3 cells. RESULTS CADM1 expression was lower in the LMF4 than in the HSC-3 cells. The knockdown of CADM1 increased the expression of MMP-2 and MMP-9 in HSC-3 cells. In addition, the upregulation of MMP-2 expression after CADM1 knockdown was abrogated by the mitogen-activated protein (MAP)/extracellular signal-regulated kinase kinase (MEK) inhibitor U0126 and the phosphoinositide 3-kinase (PI3K) inhibitor LY294002. The upregulation of MMP-9 expression after the knockdown of CADM1 was abrogated by the c-Jun N-terminal kinase (JNK) inhibitor SP600125 and the p38 MAP kinase (MAPK) inhibitor SB203580 and LY294002. Anti-CADM1 neutralizing antibody evoked migratory and invasive abilities of HSC-3 cells. CONCLUSION The disruption of CADM1-dependent cell-cell adhesion in human oral squamous cell carcinoma cells resulted in tumor progression, possibly through an increase in MMP-2 expression in a MEK/PI3K-dependent manner and an increase in MMP-9 expression in a JNK/p38 MAPK/PI3K-dependent manner.
Collapse
Affiliation(s)
- Nanami Obara
- Division of Cellular Biosignal Sciences, Department of Biochemistry, Iwate Medical University, 1-1-1, Idaidori, Yahaba-cho, Shiwa-gun, Iwate, 028-3694, Japan; Division of Oral and Maxillofacial Surgery, Department of Reconstructive Oral and Maxillofacial Surgery, School of Dentistry, Iwate Medical University, 19-1, Uchimaru, Morioka, Iwate, 020-8505, Japan
| | - Seiko Kyakumoto
- Division of Cellular Biosignal Sciences, Department of Biochemistry, Iwate Medical University, 1-1-1, Idaidori, Yahaba-cho, Shiwa-gun, Iwate, 028-3694, Japan
| | - Satoshi Yamaguchi
- Department of Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Hiroyuki Yamada
- Division of Oral and Maxillofacial Surgery, Department of Reconstructive Oral and Maxillofacial Surgery, School of Dentistry, Iwate Medical University, 19-1, Uchimaru, Morioka, Iwate, 020-8505, Japan
| | - Akira Ishisaki
- Division of Cellular Biosignal Sciences, Department of Biochemistry, Iwate Medical University, 1-1-1, Idaidori, Yahaba-cho, Shiwa-gun, Iwate, 028-3694, Japan
| | - Masaharu Kamo
- Division of Cellular Biosignal Sciences, Department of Biochemistry, Iwate Medical University, 1-1-1, Idaidori, Yahaba-cho, Shiwa-gun, Iwate, 028-3694, Japan.
| |
Collapse
|
2
|
Upregulation of P2Y12 inhibits chondrocyte apoptosis in lumbar osteoarthritis through the PI3K/AKT signaling pathway. Mol Biol Rep 2022; 49:6459-6466. [PMID: 35581507 DOI: 10.1007/s11033-022-07467-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/05/2022] [Accepted: 04/08/2022] [Indexed: 10/18/2022]
Abstract
Lumbar facet osteoarthritis (FJOA) is a major cause of severe lower back pain and disability worldwide. However, the mechanism underlying cartilage degeneration in FJOA remains unclear. The purpose of this study was to investigate the regulation and mechanism of P2Y12 on chondrocyte apoptosis in FJOA. The experimental rats were randomly divided into non-operation (n = 20) and operation groups (n = 20). In the operation group, Sodium iodoacetate (MIA, Sigma, 200 mg/mL) was injected into the right L4/5 facet process using a blunt nanoneedle 26 (WPI, Sarasota, FL, USA) under the control of an injection pump. The final injection volume was 5µL and the injection rate was 2µL/min. The facet joint was removed four weeks after surgery. After the operation, samples were stored at -80 °C until further use, whereby the right facet joints in each group were tested. Hematoxylin and eosin (HE) and iron-red solid green staining were used to observe the degeneration of articular chondrocytes in rats. Immunohistochemistry and western blotting were used to observe the expressions of P2Y12, Matrix metalloproteinase 13 (MMP13), Collagen II (COL2), and other cartilage degeneration and apoptosis-related genes. Co-localization of P2Y12-cleaved caspase-3 in the apoptosis model was detected by dual-standard immunofluorescence staining. Apoptosis was also detected by flow cytometry and TUNEL assay.P2Y12 is highly expressed in OA cartilage tissue, and inhibits IL-1β -induced chondrocyte apoptosis through PI3K/AKT signaling pathway, thus playing a certain protective role on cartilage.
Collapse
|
3
|
Ke H, Mou X, Xia Q. Remifentanil repairs cartilage damage and reduces the degradation of cartilage matrix in post-traumatic osteoarthritis, and inhibits IL-1β-induced apoptosis of articular chondrocytes via inhibition of PI3K/AKT/NF-κB phosphorylation. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1487. [PMID: 33313232 PMCID: PMC7729373 DOI: 10.21037/atm-20-6000] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Background Remifentanil (RFT) is an opioid analgesic with a unique pharmacokinetic profile, and plays an important role in the intra- and post-operative periods. Post-traumatic osteoarthritis (PTO) is a particular type of osteoarthritis (OA) that occurs secondary to a traumatic injury. In the present study, we investigated the effects of RFT both in vivo and in vitro. Methods In vivo, 50 Sprague Dawley (SD) rats (7 weeks old) were randomly divided into five groups. Four groups of rats received RFT (0.2, 0.5, and 1 µg) or vehicle (PTO group), while the remaining group served as the control. A PTO model in rats was established using the Hulth method. The cartilage damage, articular cartilage formation, and the degradation of cartilage matrix were evaluated. The effects of RFT on cell proliferation, apoptosis, and nuclear factor (NF)-κB phosphorylation were also examined. Results The results indicated that RFT improved cartilage damage, enhanced articular cartilage formation, and inhibited the degradation of cartilage matrix in PTO model rats. Compared with the control group, the protein levels of Osterix (OSX), Collagen type I alpha 1 (COL1A1), and osteocalcin (OC) were down-regulated in PTO model rats. RFT also inhibited the interleukin-1β (IL-1β)-induced apoptosis of chondrocytes in vitro. Furthermore, the phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT)/NF-κB pathway was inhibited both in vitro and in vitro. Conclusions RFT has significant potential as a therapeutic intervention to ameliorate PTO and provides a foundation for further clinical studies.
Collapse
Affiliation(s)
- Hai Ke
- Department of Anesthesiology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Xiaping Mou
- Department of Orthopedics, The People's Hospital of Jianyang, Jianyang, China
| | - Qing Xia
- Department of Traumatic Orthopedics, No. 1 People's Hospital of Yancheng, Yancheng, China
| |
Collapse
|
4
|
Yang P, Tian YM, Deng WX, Cai X, Liu WH, Li L, Huang HY. Sijunzi decoction may decrease apoptosis via stabilization of the extracellular matrix following cerebral ischaemia-reperfusion in rats. Exp Ther Med 2019; 18:2805-2812. [PMID: 31572528 PMCID: PMC6755478 DOI: 10.3892/etm.2019.7878] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Accepted: 06/13/2019] [Indexed: 12/19/2022] Open
Abstract
Neurons undergo degeneration, apoptosis and death due to ischaemic stroke. The present study investigated the effect of Sijunzi decoction (SJZD), a type of traditional Chinese medicine known as invigorating spleen therapy, on anoikis (a type of apoptosis) in rat brains following cerebral ischaemia-reperfusion. Rats were randomly divided into sham, model, nimodipine and SJZD low/medium/high dose groups. A middle cerebral artery occlusion model was established. Neurobehavioural scores were evaluated after administration for 14 days using a five-grade scale. Blood-brain barrier permeability and apoptotic rate were detected using Evans blue (EB) extravasation and TUNEL staining, respectively. Tissue inhibitor of metalloproteinase 1 (TIMP-1), matrix metalloproteinase 9 (MMP-9) and collagen IV (COL IV) were determined using immunohistochemistry. Neurobehavioural scores decreased remarkably in all SJZD and nimodipine groups compared to the model group (P<0.05). Compared with the sham group, EB extravasation was higher in the model group (P<0.01). The amount of EB extravasation decreased in the SJZD high dose and nimodipine groups compared to the model group (P<0.01), and extravasation in the SJZD high dose group was lower than the SJZD low and medium dose groups (P<0.01). TIMP-1 and MMP-9 expression and apoptotic rate increased, but COL IV decreased significantly in the hippocampus of the model group compared to the sham group (P<0.01). TIMP-1 and COL IV expression increased significantly and MMP-9 and apoptotic rate decreased remarkably in all SJZD and nimodipine groups compared to the model group (P<0.01). TIMP-1 and COL IV expression decreased, but MMP-9 expression and apoptotic rate increased in the SJZD low and medium dose groups compared to the SJZD high dose group (P<0.01). SJZD rescued neurons and improved neurobehavioural function in rats following cerebral ischaemia-reperfusion, especially when used at a high dose. The mechanism may be related to protection of the extracellular matrix followed by anti-apoptotic effects.
Collapse
Affiliation(s)
- Ping Yang
- Department of Psychiatry, Brains Hospital of Hunan Province, Clinical Medical School, Hunan University of Chinese Medicine, Changsha, Hunan 410007, P.R. China
| | - Ye-Mei Tian
- Provincial Key Laboratory of TCM Diagnostics, Hunan University of Chinese Medicine, Changsha, Hunan 410208, P.R. China
| | - Wen-Xiang Deng
- Provincial Key Laboratory of TCM Diagnostics, Hunan University of Chinese Medicine, Changsha, Hunan 410208, P.R. China
| | - Xiong Cai
- Provincial Key Laboratory of TCM Diagnostics, Hunan University of Chinese Medicine, Changsha, Hunan 410208, P.R. China
| | - Wang-Hua Liu
- Provincial Key Laboratory of TCM Diagnostics, Hunan University of Chinese Medicine, Changsha, Hunan 410208, P.R. China
| | - Liang Li
- Provincial Key Laboratory of TCM Diagnostics, Hunan University of Chinese Medicine, Changsha, Hunan 410208, P.R. China.,Key Discipline of Anatomy and Histoembryology, Hunan University of Chinese Medicine, Changsha, Hunan 410208, P.R. China
| | - Hui-Yong Huang
- Provincial Key Laboratory of TCM Diagnostics, Hunan University of Chinese Medicine, Changsha, Hunan 410208, P.R. China
| |
Collapse
|
5
|
Jiang J, Zhang J, Wu C, Guo X, Chen C, Bao G, Sun Y, Chen J, Xue P, Xu G, Cui Z. Up-regulation of TRAF2 inhibits chondrocytes apoptosis in lumbar facet joint osteoarthritis. Biochem Biophys Res Commun 2018; 503:1659-1665. [PMID: 30054040 DOI: 10.1016/j.bbrc.2018.07.096] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Accepted: 07/19/2018] [Indexed: 01/07/2023]
Abstract
Tumor necrosis factor receptor-associated factor 2 (TRAF2) has been demonstrated that it plays a significant role in cell death receptor signal transduction. The purpose of this study was to investigate the expression of TRAF2 and its possible role in FJOA. We observed an up-regulation of TRAF2 in FJOA by immunohistochemistry and reverse transcription polymerase chain reaction (RT-PCR) compared to normal tissues. In vitro, we used TNF-α to stimulate Human SW1353 chondrosarcoma cells to establish the chondrocytes injury model. Western blot analysis revealed significant expression of TRAF2 and cleaved caspase-3/8 in SW1353 cells. Co-localization of TRAF2/cleaved caspase-3/8 was detected in the cells injury model by double-labeling immunofluorescent staining. We demonstrated a possible anti-apoptotic effect of TRAF2 in chondrocyte apoptosis in FJOA by knockdown of its expression with siRNA. Moreover, TRAF2 knockdown was demonstrated to enhance TNF-α-induced apoptosis by flow cytometry assay. In conclusion, our results show that the up-regulation of TRAF2 may play an important role in the inhibition of chondrocyte apoptosis of FJOA.
Collapse
Affiliation(s)
- Jiawei Jiang
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Jinlong Zhang
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Chunshuai Wu
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Xiaofeng Guo
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Chu Chen
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Guofeng Bao
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Yuyu Sun
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Jiajia Chen
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Pengfei Xue
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Guanhua Xu
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China.
| | - Zhiming Cui
- Department of Spine Surgery, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China.
| |
Collapse
|
6
|
Li JY, Liu CP, Shiao WC, Jayakumar T, Li YS, Chang NC, Huang SY, Hsieh CY. Inhibitory effect of PDGF-BB and serum-stimulated responses in vascular smooth muscle cell proliferation by hinokitiol via up-regulation of p21 and p53. Arch Med Sci 2018; 14:579-587. [PMID: 29765446 PMCID: PMC5949921 DOI: 10.5114/aoms.2018.75085] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 06/30/2015] [Indexed: 01/01/2023] Open
Abstract
INTRODUCTION Vascular smooth muscle cell (VSMC) proliferation plays a major role in the progression of vascular diseases. In the present study, we established the efficacy and the mechanisms of action of hinokitiol, a tropolone derivative found in Chamaecyparis taiwanensis, Cupressaceae, in relation to platelet-derived growth factor-BB (PDGF-BB) and serum-dependent VSMC proliferation. MATERIAL AND METHODS Primary cultured rat VSMCs were pre-treated with hinokitiol and then stimulated by PDGF-BB (10 ng/ml) or serum (10% fetal bovine serum). Cell proliferation and cytotoxicity were determined using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide assay and lactose dehydrogenase assay, respectively. The degree of DNA synthesis was evaluated by BrdU-incorporation measurements and observed using confocal microscopy. Immunoblotting was utilized to determine the protein level of p-extracellular signal-regulated kinase (ERK) 1/2, p-Akt, p-phosphoinositide 3-kinase (PI3K), p-Janus kinase 2 (JAK2), p-p53, and p21Cip1. The promoter activity of p21 and p53 activity were measured by dual luciferase reporter assay. RESULTS Treatment with hinokitiol (1-10 μM) inhibited PDGF-BB and serum-induced VSMC proliferation and DNA synthesis in a concentration-dependent manner. Cytotoxicity was not observed in hinokitiol-treated VSMCs at the studied concentrations. Pre-incubation of VSMCs with hinokitiol did not alter PDGF-BB-induced phosphorylation of ERK1/2, Akt, PI3K or JAK2. Interestingly, hinokitiol induced promoter activity of p21 and p21 protein expression in VSMCs. Furthermore, hinokitiol augmented p53 protein phosphorylation and subsequently led to enhanced p53 activity. CONCLUSIONS These data suggest that the anti-proliferative effects of hinokitiol in VSMCs may be mediated by activation of p21 and p53 signaling pathways, and it may contribute to the prevention of vascular diseases associated with VSMC proliferation.
Collapse
Affiliation(s)
- Jiun-Yi Li
- Department of Cardiovascular Surgery, Mackay Memorial Hospital, and Mackay Medical College, Taipei, Taiwan
- Department of Pharmacology and Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chun-Ping Liu
- Department of Cardiology, Yuan’s General Hospital, Kaohsiung, Taiwan
| | - Wei-Cheng Shiao
- Department of Internal Medicine, Yuan’s General Hospital, Kaohsiung, Taiwan
| | - Thanasekaran Jayakumar
- Department of Pharmacology and Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yi-Shin Li
- Department of Pharmacology and Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Nen-Chung Chang
- Department of Cardiology, School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Shih-Yi Huang
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan
| | - Cheng-Ying Hsieh
- Department of Pharmacology and Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| |
Collapse
|
7
|
PDK1 promotes apoptosis of chondrocytes via modulating MAPK pathway in osteoarthritis. Tissue Cell 2017; 49:719-725. [DOI: 10.1016/j.tice.2017.10.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 10/07/2017] [Accepted: 10/17/2017] [Indexed: 11/21/2022]
|
8
|
Xu L, Zhai L, Ge Q, Liu Z, Tao R. Vacuolar Protein Sorting 4B (VPS4B) Regulates Apoptosis of Chondrocytes via p38 Mitogen-Activated Protein Kinases (MAPK) in Osteoarthritis. Inflammation 2017; 40:1924-1932. [DOI: 10.1007/s10753-017-0633-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
9
|
Wang W, Liu J, Yang B, Ma Z, Liu G, Shen W, Zhang Y. Modulation of platelet-derived microparticles to adhesion and motility of human rheumatoid arthritis fibroblast-like synoviocytes. PLoS One 2017; 12:e0181003. [PMID: 28704431 PMCID: PMC5509257 DOI: 10.1371/journal.pone.0181003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 06/23/2017] [Indexed: 12/20/2022] Open
Abstract
Platelet-derived microparticles (PMPs) are closely associated with disease activity in rheumatoid arthritis (RA) and contribute to the inflammatory process. Rheumatoid arthritis fibroblast-like synoviocytes (RA-FLSs) play important roles in the progression of joint destruction. The aim of this study is to demonstrate whether PMPs affect the adhesion and motility of RA-FLSs. Our data indicated that PMPs promoted migration, invasion and adhesion to extracellular matrix (ECM) of RA-FLSs. Further study showed that PMPs up-regulated the expression of matrix metalloproteinase-1 (MMP1) and increased the level of phosphorylation of NF-κB (p-NF-κB) and Erk (p-Erk) in RA-FLSs. These results suggest that PMPs promote RA-FLSs adhesion and motility presumably by increasing MMP1 via activating Erk-mediated NF-κB pathway.
Collapse
Affiliation(s)
- Wenwen Wang
- Clinical Medical College, Yangzhou University, Yangzhou, P.R. China
- School of Medicine, Yangzhou University, Yangzhou, P.R. China
| | - Jiahuan Liu
- Clinical Medical College, Yangzhou University, Yangzhou, P.R. China
- School of Medicine, Yangzhou University, Yangzhou, P.R. China
| | - Binzhou Yang
- The Third People’s Hospital of Chengdu, Southwest JiaoTong University College of Medicine, Chengdu, P.R. China
| | - Zhongshuang Ma
- Department of Rheumatology, Yancheng Chengnan Hospital, Yancheng, P.R. China
| | - Guiping Liu
- Clinical Medical College, Yangzhou University, Yangzhou, P.R. China
- School of Medicine, Yangzhou University, Yangzhou, P.R. China
| | - Weigan Shen
- Clinical Medical College, Yangzhou University, Yangzhou, P.R. China
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou, P.R. China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, P.R. China
- * E-mail: (YZ); (WS)
| | - Yu Zhang
- Clinical Medical College, Yangzhou University, Yangzhou, P.R. China
- School of Medicine, Yangzhou University, Yangzhou, P.R. China
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou, P.R. China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, P.R. China
- * E-mail: (YZ); (WS)
| |
Collapse
|
10
|
Bao G, Xu L, Xu X, Zhai L, Duan C, Xu D, Song J, Liu Z, Tao R, Cui Z, Yang H. SGTB Promotes the Caspase-Dependent Apoptosis in Chondrocytes of Osteoarthritis. Inflammation 2017; 39:601-10. [PMID: 26586481 DOI: 10.1007/s10753-015-0285-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The purpose of this study is to investigate the expression of small glutamine-rich tetratricopeptide repeat (TPR)-containing β (SGTB) in articular cartilage of osteoarthritis (OA) and analyze the relationship between SGTB and chondrocyte apoptosis. We established an OA rat model by the meniscal/ligamentous injury (MLI) modeling method and observed the expression of SGTB in articular cartilage by immunohistochemistry and RT-PCR. Human SW1353 chondrosarcoma cells were treated with interleukin-1β (IL-1β) to mimic the OA-like chondrocyte injury in vitro, and Western blot was employed to examine the IL-1β-induced expression of SGTB and active caspase-3. The co-localization of SGTB and active caspase-3 was confirmed by immunofluorescence. We knocked down SGTB expression by RNA interference (RNAi) and overexpressed SGTB by plasmid transfection. Western blot was carried out to detect the knockdown/overexpressing efficiency of SGTB and evaluate its effects on IL-1β-stimulated expression of active caspase-3 in SW1353 cells. Annexin V/propidium iodide staining was used to detect chondrocyte apoptosis. Then, Western blot was carried out to examine the IL-1β-induced expression of Hsp70 and evaluate SGTB effects on IL-1β-stimulated expression of Hsp70 in SW1353 cells. SGTB expression was significantly up-regulated in articular cartilage of OA rat model. IL-1β stimulation increased the expression of SGTB and active caspase-3 in SW1353 cells. SGTB co-localized with active caspase-3 in IL-1β-treated SW1353 cells. SGTB inhibition significantly reduced IL-1β-stimulated expression of active caspase-3 in SW1353 cells. In line with this, overexpressing SGTB via Myc-SGTB transfection increased the active caspase-3 level in IL-1β-stimulated SW1353 cells. Moreover, flow cytometry assay demonstrated that SGTB knockdown alleviated IL-1β-induced apoptosis, but it was increased in SW1353 cells that overexpressed SGTB. Overexpressing SGTB via Myc-SGTB transfection decreased the Hsp70 level in IL-1β-stimulated SW1353 cells. Our results suggested that SGTB positively regulate the activation of caspase-3 by negatively regulating the activity of Hsp70 and might promote chondrocyte apoptosis in OA. This study may provide a novel insight into the pathophysiology of OA and a potential therapeutic target for its treatment.
Collapse
Affiliation(s)
- Guofeng Bao
- Department of Orthopedic Surgery, the First Affiliated Hospital of Soochow University, Suzhou, 215006, China.,Department of Spine Surgery, the Second Affiliated Hospital of Nantong University, Nantong, 226001, China
| | - Libin Xu
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong University, Nantong, 226001, China
| | - Xinbao Xu
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong University, Nantong, 226001, China
| | - Leilei Zhai
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong University, Nantong, 226001, China
| | - Chengwei Duan
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong University, Nantong, 226001, China
| | - Dawei Xu
- Department of Spine Surgery, the Second Affiliated Hospital of Nantong University, Nantong, 226001, China
| | - Jie Song
- Department of Spine Surgery, the Second Affiliated Hospital of Nantong University, Nantong, 226001, China
| | - Zhongbing Liu
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong University, Nantong, 226001, China
| | - Ran Tao
- Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong University, Nantong, 226001, China
| | - Zhiming Cui
- Department of Spine Surgery, the Second Affiliated Hospital of Nantong University, Nantong, 226001, China
| | - Huilin Yang
- Department of Orthopedic Surgery, the First Affiliated Hospital of Soochow University, Suzhou, 215006, China.
| |
Collapse
|
11
|
Chao HM, Hu L, Cheng JM, Liu XQ, Liu JH, Pan WHT, Zhang XM. Chi-Ju-Di-Huang-Wan protects rats against retinal ischemia by downregulating matrix metalloproteinase-9 and inhibiting p38 mitogen-activated protein kinase. Chin Med 2016; 11:39. [PMID: 27617027 PMCID: PMC5016920 DOI: 10.1186/s13020-016-0109-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 08/12/2016] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Retinal ischemia is a retinal disorder related to retinal vascular occlusion, glaucoma, diabetic retinopathy and age-related macular degeneration. The study aimed to evaluate the protective effects and underlying mechanisms of Chi-Ju-Di-Huang-Wan (CJDHW) against retinal ischemia in rats. METHODS High intraocular pressure (HIOP)-induced retinal ischemia was established in Wistar rats by raising their intraocular pressure to 120 mmHg for 60 min with in an eye whose anterior chamber was cannulated with a 30-guage needle adapted to a normal saline bottle through an intravenous line. This ischemic insult was followed by 1 or 7 days of reperfusion. The effects of CJDHW were studied by (i) electroretinogram (ERG); (ii) real-time polymerase chain reaction to determine the retinal mRNA levels of Thy-1 and matrix metalloproteinase-9 (MMP-9); (iii) Western blot analysis to determine the retinal protein levels of B cell lymphoma 2 (Bcl-2), heme oxygenase-1 (HO-1), phosphorylated-p38 mitogen-activated protein kinase (P-p38 MAPK) and MMP-9; (iv) hematoxylin and eosin (HE) staining; (v) fluorogold retrograde labeling; and (vi) terminal deoxynucleotidyl-transferase (TdT)-mediated dUTP nick end-labeling (TUNEL) apoptosis assay. Moreover, after fixation with 4 % paraformaldehyde and 30 % sucrose, the isolated retinas were sectioned and immunolabeled with goat anti-choline acetyltransferase (ChAT) polyclonal antibody, mouse anti-vimentin monoclonal antibody and rabbit anti-glial fibrillary acidic protein (GFAP) polyclonal antibody. The retinal sections were then incubated with rhodamine-conjugated rabbit anti-goat antibody, fluorescein isothiocyanate (FITC)-conjugated goat anti-mouse IgG or FITC-conjugated goat anti-rabbit IgG. A daily oral intake of 3 mL of water (vehicle; Group 2) or CJDHW (2.8 or 4.2 g/kg/day; CJDHW2.8 or CJDHW4.2; Group 3 or 4) was given for 7 consecutive days either before (preischemic drug administration) or after HIOP-induced retinal ischemic injury (postischemic drug administration). In Group 5, an intravitreal injection of 4 μL of 0.5 mM SB203580 (p38 MAPK inhibitor) was performed on the ischemic eye 15 min before retinal ischemia. The control rats received a sham procedure (Group 1) where the saline reservoir was not raised. RESULTS The ischemia-induced changes (Group 2) were significantly modulated by pretreating the rats with 4.2 g/kg/day of CJDHW (Group 4; ERG: P < 0.001 on I/R day 7; HE stain: P < 0.001 on I/R day 7; TUNEL: P = 0.05 on I/R day 7; retrograde labeling: P = 0.007 on I/R day 7; Thy-1 mRNA: P = 0.02; MMP-9 mRNA: P < 0.001; Bcl-2 protein: P = 0.02; HO-1 protein: P = 0.03; P-p38 MAPK protein: P < 0.001; MMP-9 protein: P = 0.02). These modulations included the following features (Group 2 vs. 4), increased ERG b-wave amplitudes (0.38 ± 0.04 vs. 0.81 ± 0.03), increased inner retinal thickness (45.08 ± 2.85 vs. 67.98 ± 5.48 μm), increased ChAT immunolabeling, decreased vimentin/GFAP immunoreactivity, less numerous apoptotic cells in the ganglion cell layer (1.40 ± 0.55 vs. 0.60 ± 0.55), and more numerous retinal ganglion cells (887.73 ± 158.18 vs. 1389.02 ± 53.20). Moreover, increased Thy-1 (0.31 ± 0.15 vs. 0.78 ± 0.32) and decreased MMP-9 mRNA levels were found (4.44 ± 0.84 vs. 1.13 ± 0.34), respectively. Furthermore, the Bcl-2 protein level (0.78 ± 0.08 vs. 1.80 ± 0.34) was increased while the HO-1 (0.99 ± 0.20 vs. 4.15 ± 2.08), P-p38 MAPK (1.12 ± 0.18 vs. 0.57 ± 0.18) and MMP-9 levels were decreased (0.70 ± 0.23 vs. 0.39 ± 0.10). The ischemia-associated increases in P-p38 and MMP-9 protein levels were also attenuated by 0.5 mM SB203580 (P-p38 MAPK: 1.12 ± 0.18 vs. 0.18 ± 0.07, P < 0.001; MMP-9: 0.70 ± 0.23 vs. 0.21 ± 0.07, P = 0.002). This was also the case to the MMP_enzyme activity (Group 2 vs. 4: 5.03 ± 1.57 vs. 1.59 ± 0.47, P = 0.002; Group 2 vs. 5: 5.03 ± 1.57 vs. 1.35 ± 0.41, P = 0.001). CONCLUSION Treatment of the rats suffering from retinal ischemia with CJDHW inhibited apoptosis, increased antioxidative activity, downregulated MMP-9 and inhibited p38 MAPK.
Collapse
Affiliation(s)
- Hsiao-Ming Chao
- Department of Ophthalmology, Cheng Hsin General Hospital, Taipei, Taiwan.,Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Chinese Medicine, School of Chinese Medicine, Medical University, Taichung, Taiwan
| | - Lei Hu
- Department of Ophthalmology, Affiliated Hospital of Taishan Medical University, Shandong, China
| | - Ji-Min Cheng
- Department of Ophthalmology, Affiliated Hospital of Taishan Medical University, Shandong, China
| | - Xiao-Qian Liu
- Department of Pharmacology, School of Medicine, Shandong University, Jinan, Shandong China
| | - Jorn-Hon Liu
- Department of Ophthalmology, Cheng Hsin General Hospital, Taipei, Taiwan
| | - Wynn Hwai-Tzong Pan
- Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Xiu-Mei Zhang
- Department of Pharmacology, School of Medicine, Shandong University, Jinan, Shandong China
| |
Collapse
|
12
|
Rebmann T, Turner JA, Kunerth AK. Presenteeism Attitudes and Behavior Among Missouri Kindergarten to Twelfth Grade (K-12) School Nurses. J Sch Nurs 2016; 32:407-415. [PMID: 27026665 DOI: 10.1177/1059840516637651] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Working while ill (presenteeism) with symptoms of influenza-like illness can contribute to outbreaks, but little is known about school nurse presenteeism. Missouri Association of School Nurses members (N = 396) were sent a survey in 2013/2014. A chi square test was conducted to compare having a school culture that encourages presenteeism versus actual sick leave policies. Multivariate logistic regression was conducted to delineate factors associated with presenteeism. In total, 133 school nurses participated (33.6% response rate). Almost half (42.1%, n = 56) reported presenteeism. Nurses were more likely to feel pressure to engage in presenteeism than reported punitive sick leave policies (14.3% vs. 3.8%, χ2 = 18.3, p < .001). Presenteeism was associated with perceived pressure, odds ratio (OR) = 4.8, confidence interval (CI) = [1.5, 15.8], p < .01, and having a mild illness, OR = 3.6, CI = [1.4, 9.7], p = .01. Many school nurses engage in presenteeism, and this appears to be associated with organizational cultural norms rather than established sick leave policies.
Collapse
Affiliation(s)
- Terri Rebmann
- Institute for Biosecurity, Saint Louis University, College for Public Health & Social Justice, St. Louis, MO, USA .,Department of Environmental and Occupational Health, Saint Louis University, College for Public Health & Social Justice, St. Louis, MO, USA
| | - James Austin Turner
- Institute for Biosecurity, Saint Louis University, College for Public Health & Social Justice, St. Louis, MO, USA.,Department of Medical Imaging and Radiation Therapeutics, Edward and Margaret Doisy College of Health Sciences, Saint Louis University, St. Louis, MO, USA
| | - Allison K Kunerth
- Institute for Biosecurity, Saint Louis University, College for Public Health & Social Justice, St. Louis, MO, USA
| |
Collapse
|
13
|
Santoro A, Conde J, Scotece M, Abella V, Lois A, Lopez V, Pino J, Gomez R, Gomez-Reino JJ, Gualillo O. SERPINE2 Inhibits IL-1α-Induced MMP-13 Expression in Human Chondrocytes: Involvement of ERK/NF-κB/AP-1 Pathways. PLoS One 2015; 10:e0135979. [PMID: 26305372 PMCID: PMC4549255 DOI: 10.1371/journal.pone.0135979] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 07/28/2015] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVES Osteoarthritis (OA) is a chronic joint disease, characterized by a progressive loss of articular cartilage. During OA, proinflammatory cytokines, such as interleukin IL-1, induce the expression of matrix metalloproteinases (MMPs) in chondrocytes, contributing thus to the extracellular matrix (ECM) degradation. Members of Serpine family, including plasminogen activator inhibitors have been reported to participate in ECM regulation. The aim of this study was to assess the expression of serpin peptidase inhibitor clade E member 2 (SERPINE2), under basal conditions and in response to increasing doses of IL-1α, in human cultured chondrocytes. We also examined the effects of SERPINE2 on IL-1α-induced MMP-13 expression. For completeness, the signaling pathway involved in this process was also explored. METHODS SERPINE2 mRNA and protein expression were evaluated by RT-qPCR and western blot analysis in human T/C-28a2 cell line and human primary chondrocytes. These cells were treated with human recombinant SERPINE2, alone or in combination with IL-1α. ERK 1/2, NFκB and AP-1 activation were assessed by western blot analysis. RESULTS Human cultured chondrocytes express SERPINE2 in basal condition. This expression increased in response to IL-1α stimulation. In addition, recombinant SERPINE2 induced a clear inhibition of MMP-13 expression in IL-1α-stimulated chondrocytes. This inhibitory effect is likely regulated through a pathway involving ERK 1/2, NF-κB and AP-1. CONCLUSIONS Taken together, these data demonstrate that SERPINE2 might prevent cartilage catabolism by inhibiting the expression of MMP-13, one of the most relevant collagenases, involved in cartilage breakdown in OA.
Collapse
Affiliation(s)
- Anna Santoro
- SERGAS (Servizo Galego de Saude) and IDIS (Instituto de Investigación Sanitaria de Santiago), the NEIRID Lab (Neuroendocrine Interactions in Rheumatology and Inflammatory Diseases), Research Laboratory 9, Santiago University Clinical Hospital, Santiago de Compostela, Spain
- University of Naples Federico II, Dept. of Pharmacy, 80138, Naples, Italy
| | - Javier Conde
- SERGAS (Servizo Galego de Saude) and IDIS (Instituto de Investigación Sanitaria de Santiago), the NEIRID Lab (Neuroendocrine Interactions in Rheumatology and Inflammatory Diseases), Research Laboratory 9, Santiago University Clinical Hospital, Santiago de Compostela, Spain
| | - Morena Scotece
- SERGAS (Servizo Galego de Saude) and IDIS (Instituto de Investigación Sanitaria de Santiago), the NEIRID Lab (Neuroendocrine Interactions in Rheumatology and Inflammatory Diseases), Research Laboratory 9, Santiago University Clinical Hospital, Santiago de Compostela, Spain
| | - Vanessa Abella
- SERGAS (Servizo Galego de Saude) and IDIS (Instituto de Investigación Sanitaria de Santiago), the NEIRID Lab (Neuroendocrine Interactions in Rheumatology and Inflammatory Diseases), Research Laboratory 9, Santiago University Clinical Hospital, Santiago de Compostela, Spain
- Department of Molecular and Cellular Biology, University of Coruña (UDC), A Coruña, Spain
| | - Ana Lois
- SERGAS (Servizo Galego de Saude) and IDIS (Instituto de Investigación Sanitaria de Santiago), the NEIRID Lab (Neuroendocrine Interactions in Rheumatology and Inflammatory Diseases), Research Laboratory 9, Santiago University Clinical Hospital, Santiago de Compostela, Spain
| | - Veronica Lopez
- SERGAS (Servizo Galego de Saude) and IDIS (Instituto de Investigación Sanitaria de Santiago), the NEIRID Lab (Neuroendocrine Interactions in Rheumatology and Inflammatory Diseases), Research Laboratory 9, Santiago University Clinical Hospital, Santiago de Compostela, Spain
| | - Jesus Pino
- SERGAS (Servizo Galego de Saude), Division of Orthopaedics Surgery and Traumatology, Santiago University Clinical Hospital, Santiago de Compostela, Spain
| | - Rodolfo Gomez
- SERGAS (Servizo Galego de Saude) and IDIS (Instituto de Investigación Sanitaria de Santiago), the NEIRID Lab (Neuroendocrine Interactions in Rheumatology and Inflammatory Diseases), Research Laboratory 9, Santiago University Clinical Hospital, Santiago de Compostela, Spain
| | - Juan J. Gomez-Reino
- University of Santiago de Compostela, Department of Medicine and SERGAS (Servizo Galego de Saude) and IDIS (Instituto de Investigación Sanitaria de Santiago), Division of Rheumatology, Santiago University Clinical Hospital, Santiago de Compostela, Spain
| | - Oreste Gualillo
- SERGAS (Servizo Galego de Saude) and IDIS (Instituto de Investigación Sanitaria de Santiago), the NEIRID Lab (Neuroendocrine Interactions in Rheumatology and Inflammatory Diseases), Research Laboratory 9, Santiago University Clinical Hospital, Santiago de Compostela, Spain
- * E-mail:
| |
Collapse
|
14
|
Wang Z, Ding L, Zhang S, Jiang T, Yang Y, Li R. Effects of icariin on the regulation of the OPG-RANKL-RANK system are mediated through the MAPK pathways in IL-1β-stimulated human SW1353 chondrosarcoma cells. Int J Mol Med 2014; 34:1720-6. [PMID: 25270538 DOI: 10.3892/ijmm.2014.1952] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 09/25/2014] [Indexed: 11/06/2022] Open
Abstract
Arthrodial cartilage degradation and subchondral bone remodeling comprise the most predominant pathological changes in osteoarthritis (OA). Moreover, accumulating evidence indicates that the abnormal expression of osteoprotegerin (OPG), receptor activator of nuclear factor kappa-B ligand (RANKL) and receptor activator of nuclear factor kappa-B (RANK) plays a vital role in the collapse of cartilage and subchondral bone. In the present study, the effects of icariin on the expression levels of these 3 factors in interleukin (IL)-1β-stimulated SW1353 chondrosarcoma cells were investigated. The SW1353 chondrosarcoma cells were cultured in the presence or absence of icariin and mitogen-activated protein kinase signaling pathway inhibitors, and were then stimulated with IL-1β. Cell viability was assessed by MTT assay. The mRNA and protein expression of OPG, RANKL and RANK was analyzed by quantitative reverse transcription polymerase chain reaction (RT-qPCR) and ELISA, respectively. In addition, the levels of phosphorylated p38 (p-p38) and phosphorylated extracellular signal-regulated kinase (p-ERK)1/2 were detected by western blot analysis. The results from western blot analysis revealed that treatment with icariin decreased the levels of p-p38 and increased the levels of p-ERK1/2 in the IL-1β-stimulated SW1353 cells. In addition, treatment with icariin decreased the levels of RANK and RANKL. Furthermore, the suppressive effects of icariin on OPG and OPG/RANKL were greater than those exhibited by the p38 signaling pathway inhibitor (SB203580). The findings of the the present study suggest that icariin has therapeutic potential for use in the treatment of OA.
Collapse
Affiliation(s)
- Zeming Wang
- Department of Combination of Chinese and Western Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Li Ding
- Department of Combination of Chinese and Western Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Sihan Zhang
- Department of Combination of Chinese and Western Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Tao Jiang
- Department of Pneumology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Yongmian Yang
- Department of Gynaecology, The Fourth Hospital of Shijiazhuang, Shijiazhuang, Hebei 050011, P.R. China
| | - Rongheng Li
- Department of Combination of Chinese and Western Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| |
Collapse
|
15
|
Yang JJ, Tao H, Li J. Hedgehog signaling pathway as key player in liver fibrosis: new insights and perspectives. Expert Opin Ther Targets 2014; 18:1011-21. [PMID: 24935558 DOI: 10.1517/14728222.2014.927443] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Activation of hepatic stellate cells (HSCs) is a pivotal cellular event in liver fibrosis. Therefore, improving our understanding of the molecular pathways that are involved in these processes is essential to generate new therapies for liver fibrosis. Greater knowledge of the role of the hedgehog signaling pathway in liver fibrosis could improve understanding of the liver fibrosis pathogenesis. AREAS COVERED The aim of this review is to describe the present knowledge about the hedgehog signaling pathway, which significantly participates in liver fibrosis and HSC activation, and look ahead on new perspectives of hedgehog signaling pathway research. Moreover, we will discuss the different interactions with hedgehog signaling pathway-regulated liver fibrosis. EXPERT OPINION The hedgehog pathway modulates several important aspects of function, including cell proliferation, activation and differentiation. Targeting the hedgehog pathway can be a promising direction in liver fibrosis treatment. We discuss new perspectives of hedgehog signaling pathway activation in liver fibrosis and HSC fate, including DNA methylation, methyl CpG binding protein 2, microRNA, irradiation and metabolism that influence hedgehog signaling pathway transduction. These findings identify the hedgehog pathway as a potentially important for biomarker development and therapeutic targets in liver fibrosis. Future studies are needed in order to find safer and more effective hedgehog-based drugs.
Collapse
Affiliation(s)
- Jing-Jing Yang
- The Second Hospital of Anhui Medical University, Department of Pharmacology , Hefei 230601 , China
| | | | | |
Collapse
|
16
|
Long T, Su J, Tang W, Luo Z, Liu S, Liu Z, Zhou H, Qi M, Zeng W, Zhang J, Chen X. A novel interaction between calcium-modulating cyclophilin ligand and Basigin regulates calcium signaling and matrix metalloproteinase activities in human melanoma cells. Cancer Lett 2013; 339:93-101. [PMID: 23879967 DOI: 10.1016/j.canlet.2013.07.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 07/11/2013] [Accepted: 07/15/2013] [Indexed: 12/30/2022]
Abstract
Intracellular free calcium is a ubiquitous second messenger regulating a multitude of normal and pathogenic cellular responses, including the development of melanoma. Upstream signaling pathways regulating the intracellular free calcium concentration ([Ca2+]i) may therefore have a significant impact on melanoma growth and metastasis. In this study, we demonstrate that the endoplasmic reticulum (ER)-associated protein calcium-modulating cyclophilin ligand (CAML) is bound to Basigin, a widely expressed integral plasma membrane glycoprotein and extracellular matrix metalloproteinase inducer (EMMPRIN, or CD147) implicated in melanoma proliferation, invasiveness, and metastasis. This interaction between CAML and Basigin was first identified using yeast two-hybrid screening and further confirmed by co-immunoprecipitation. In human A375 melanoma cells, CAML and Basigin were co-localized to the ER. Knockdown of Basigin in melanoma cells by siRNA significantly decreased resting [Ca2+]i and the [Ca2+]i increase induced by the sarco/endoplasmic reticulum Ca(2+)-ATPase (SERCA) inhibitor thapsigargin (TG), indicating that the interaction between CAML and Basigin regulates ER-dependent [Ca2+]i signaling. Meanwhile upregulating the [Ca2+]i either by TG or phorbol myristate acetate (PMA) could stimulate the production of MMP-9 in A375 cells with the expression of Basigin. Our study has revealed a previously uncharacterized [Ca2+]i signaling pathway that may control melanoma invasion, and metastasis. Disruption of this pathway may be a novel therapeutic strategy for melanoma treatment.
Collapse
Affiliation(s)
- Tingting Long
- Department of Dermatology, XiangYa Hospital, Central South University, Changsha, Hunan, China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|