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Qin J, Wang H, Lyu Z, Liao Y, Zeng N, Wang K, Zhou Y, Zeng Z, Liao Z, Cao Y, He J, Wang T, Wen F. Elevated soluble death receptor 5 can predict poor prognosis in patients with acute respiratory distress syndrome. Expert Rev Respir Med 2022; 16:823-832. [PMID: 35822538 DOI: 10.1080/17476348.2022.2100351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND : The tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) and its receptor, death receptor 5 (DR5), participate in pulmonary cell apoptosis. This study aimed to investigate the clinical value of soluble DR5 and TRAIL for prognosis assessment in acute respiratory distress syndrome (ARDS). RESEARCH DESIGN AND METHODS : Serum and bronchoalveolar lavage fluid (BALF) samples were collected from ARDS patients and controls. Patients were followed-up until death or discharge. Soluble DR5, TRAIL, TNF-α, soluble receptor for advanced glycation end-products (sRAGE), and albumin levels were measured using the Magnetic Luminex or enzyme-linked immunosorbent assays. Data were analyzed according to their distribution and statistical purpose. RESULTS : Serum and BALF DR5 levels were elevated in patients with ARDS; TRAIL elevation and reduction was observed in BALF and serum, respectively. Serum DR5 was higher in non-survivors compared to survivors. Serum DR5 was positively correlated with serum TNF-α and critical illness scores and negatively correlated with serum TRAIL. Serum and BALF DR5 was positively correlated with the alveolar epithelial cell damage (sRAGE) and lung fluid leakage indicators. Serum DR5 exhibited potential for predicting mortality in patients with ARDS. CONCLUSIONS : Serum soluble DR5 elevation, a valuable prognosis predictor in ARDS, may be associated with alveolar epithelial cell apoptosis.
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Affiliation(s)
- Jiangyue Qin
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University. Guoxuexiang 37, Chengdu, Sichuan 610041, China
| | - Hao Wang
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University. Guoxuexiang 37, Chengdu, Sichuan 610041, China
| | - Zhuoyao Lyu
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University. Guoxuexiang 37, Chengdu, Sichuan 610041, China
| | - Yue Liao
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University. Guoxuexiang 37, Chengdu, Sichuan 610041, China
| | - Ni Zeng
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University. Guoxuexiang 37, Chengdu, Sichuan 610041, China
| | - Ke Wang
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University. Guoxuexiang 37, Chengdu, Sichuan 610041, China
| | - Yongfang Zhou
- Department of Critical Care Medicine, West China Hospital of Sichuan University, China
| | - Zijian Zeng
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University. Guoxuexiang 37, Chengdu, Sichuan 610041, China
| | - Zenglin Liao
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University. Guoxuexiang 37, Chengdu, Sichuan 610041, China
| | - Yufang Cao
- Department of Critical Care Medicine, Haikou Municipal People's Hospital and Central South University Xiangya School of Medicine Affiliated Haikou Hospital, China
| | - Junyun He
- Department of Respiratory Medicine, Hospital of Chengdu Office of People's Government of Tibetan autonomous Region, China
| | - Tao Wang
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University. Guoxuexiang 37, Chengdu, Sichuan 610041, China
| | - Fuqiang Wen
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China and Department of Respiratory and Critical Care Medicine, West China Hospital of Sichuan University. Guoxuexiang 37, Chengdu, Sichuan 610041, China
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Yang J, Cai M, Wan J, Wang L, Luo J, Li X, Gong W, He Y, Chen J. Effluent decoy receptor 2 as a novel biomarker of peritoneal fibrosis in peritoneal dialysis patients. ARCH ESP UROL 2022; 42:631-639. [PMID: 35176936 DOI: 10.1177/08968608211067866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Peritoneal fibrosis (PF) is a common complication of peritoneal dialysis (PD), but a specific and sensitive biomarker for PF is lacking. The present study aimed to determine the use of effluent decoy receptor 2 (eDcR2) as a biomarker for PF in PD patients. METHODS PD patients (n = 248) were recruited, and peritoneal specimens were collected at PD initiation (n = 30) and cessation (n = 33). Enzyme-linked immunoassay was used to measure eDcR2 and the eDcR2 appearance rate (eDcR2-AR) was calculated. The levels of DcR2 mRNA and protein were determined. The correlation of eDcR2 level with peritoneal function, histological parameters and DcR2 expression were analysed. Receiver operating characteristic (ROC) analysis was used to assess the diagnostic performance of eDcR2 for PF, which was defined as a submesothelial thickness 150 µm or more. Co-localisation of DcR2 with a mesothelial marker, fibroblast markers and fibrotic markers were determined. RESULTS The eDcR2-AR level correlated with PD duration, D/P Cr values, peritoneal Kt/V and peritoneal injury scores, especially submesothelial thickness (r = 0.638, p < 0.001). DcR2 was primarily expressed in peritoneal fibroblasts, and co-localised with α-SMA, vimentin, collagen I and fibronectin, but not with E-cadherin. Peritoneal DcR2 expression had a positive correlation with eDcR2-AR. ROC analysis indicated eDcR2 had an area under the curve of 0.907 for detection of PF (sensitivity: 78.6%, specificity: 100%) and the best cut-off value was 392.5 pg/min. CONCLUSION The eDcR2-AR level is a potential biomarker for assessing PF in PD patients. Effluent DcR2 was mainly derived from peritoneal fibroblasts and DcR2-positive cells may accelerate PF, suggesting that it may be a potential therapeutic target.
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Affiliation(s)
- Jie Yang
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Mingyu Cai
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Jinfang Wan
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Liming Wang
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Jia Luo
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Xue Li
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Wenjiang Gong
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Yani He
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Jia Chen
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
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Zhang C, Shen Y, Gao L, Wang X, Huang D, Xie X, Xu D, He H. Targeting POLE2 Creates a Novel Vulnerability in Renal Cell Carcinoma via Modulating Stanniocalcin 1. Front Cell Dev Biol 2021; 9:622344. [PMID: 33644060 PMCID: PMC7905105 DOI: 10.3389/fcell.2021.622344] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 01/25/2021] [Indexed: 02/06/2023] Open
Abstract
Objective The aim of this study is to investigate the biological functions and the underlying mechanisms of DNA polymerase epsilon subunit 2 (POLE2) in renal cell carcinoma (RCC). Methods The datasets of POLE2 expression in The Cancer Genome Atlas Kidney Clear Cell Carcinoma (TCGA-KIRC) and International Cancer Genome Consortium (ICGC) databases was selected and the correlation between POLE2 and various clinicopathological parameters was analyzed. The POLE2 expression in RCC tissues was examined by immunohistochemistry. The POLE2 knockdown cell lines were constructed. In vitro and in vivo experiments were carried out to investigate the function of POLE2 on cellular biology of RCC, including cell viability assay, clone formation assay, flow cytometry, wound-healing assay, Transwell assay, qRT-PCR, Western blot, etc. Besides, microarray, co-immunoprecipitation, rescue experiment, and Western blot were used to investigate the molecular mechanisms underlying the functions of POLE2. Results POLE2 was overexpressed in RCC tissues, and high expression of POLE2 was correlated with poor prognosis of RCC. Furthermore, knockdown of POLE2 significantly inhibited cell proliferation, migration, and facilitated apoptosis in vitro. In vivo experiments revealed that POLE2 attenuated RCC tumorigenesis and tumor growth. we also illuminated that stanniocalcin 1 (STC1) was a downstream gene of POLE2, which promoted the occurrence and development of RCC. Besides, knockdown of POLE2 significantly upregulated the expression levels of Bad and p21 while the expression levels of HSP70, IGF-I, IGF-II, survivin, and sTNF-R1 were significantly downregulated. Western blot analysis also showed that knockdown of POLE2 inhibited the expression levels of Cancer-related pathway proteins including p-Akt, CCND1, MAPK9, and PIK3CA. Conclusion Knockdown of POLE2 attenuates RCC cells proliferation and migration by regulating STC1, suggesting that POLE2-STC1 may become a potential target for RCC therapy.
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Affiliation(s)
- Chuanjie Zhang
- Department of Urology, Shanghai Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan Shen
- Research Center for Experimental Medicine, Shanghai Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lili Gao
- Department of Pathology, Shanghai Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaojing Wang
- Department of Urology, Shanghai Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Da Huang
- Department of Urology, Shanghai Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xin Xie
- Department of Urology, Shanghai Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Danfeng Xu
- Department of Urology, Shanghai Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hongchao He
- Department of Urology, Shanghai Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Zhu Y, Chen G, Song Y, Chen Z, Chen X. POLE2 knockdown reduce tumorigenesis in esophageal squamous cells. Cancer Cell Int 2020; 20:388. [PMID: 32831648 PMCID: PMC7422519 DOI: 10.1186/s12935-020-01477-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 08/01/2020] [Indexed: 01/19/2023] Open
Abstract
Background Esophageal squamous cell carcinoma (ESCC) is one of the most frequent malignant tumors originated from digestive system around the world and the treatment was limited by the unclear mechanism. DNA polymerase epsilon 2, accessory subunit (POLE2) is involved in DNA replication, repair, and cell cycle control, whose association with ESCC is still not clear. Methods In this study, the expression level of POLE2 in ESCC tissues was detected by IHC. The POLE2 knockdown cell line was constructed, identified by qPCR and western blot and used for detecting cellular functions and constructing xenotransplantation mice model. MTT Assay, colony formation assay, flow cytometry, wound-healing assay and Transwell assay were used to detected cell proliferation, apoptosis and migration. Results We firstly identified that the expression of POLE2 was overexpressed in ESCC. Moreover, the high expression of POLE2 can predict the tumor deterioration and poor prognosis of ESCC patients. Additionally, downregulation of POLE2 was involved in ESCC progression by promoting proliferation, migration, and inhibiting apoptosis in vitro. In vivo studies proved that POLE2 was positively correlated with ESCC tumor formation, which was consistent with the results in vitro. We also illuminated that POLE2 knockdown upregulated pro-apoptotic proteins (Bax, Caspase3, CD40L, FasL, IGFBP-5 and P21) and downregulated anti-apoptotic proteins (CLAP-2, IGF-I and sTNF-R2). In addition, POLE2 was involved in ESCC via targeting PI3K/Akt, Cyclin D1 signaling pathway. Conclusions Therefore, POLE2 was proved to be involved in the development of ESCC, which may be a potential therapeutic target and bring new breakthroughs in the treatment of ESCC.
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Affiliation(s)
- Yongjun Zhu
- Department of Cardiothoracic Surgery, Huashan Hospital, Fudan University, No. 12, Mid, Wulumuqi Rd, Shanghai, China
| | - Gang Chen
- Department of Cardiothoracic Surgery, Huashan Hospital, Fudan University, No. 12, Mid, Wulumuqi Rd, Shanghai, China
| | - Yang Song
- Department of Cardiothoracic Surgery, Huashan Hospital, Fudan University, No. 12, Mid, Wulumuqi Rd, Shanghai, China
| | - Zhiming Chen
- Department of Cardiothoracic Surgery, Huashan Hospital, Fudan University, No. 12, Mid, Wulumuqi Rd, Shanghai, China
| | - Xiaofeng Chen
- Department of Cardiothoracic Surgery, Huashan Hospital, Fudan University, No. 12, Mid, Wulumuqi Rd, Shanghai, China
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Chen J, Hu W, Xiao F, Lin L, Chen K, Wang L, Wang X, He Y. DCR2, a Cellular Senescent Molecule, Is a Novel Marker for Assessing Tubulointerstitial Fibrosis in Patients with Immunoglobulin A Nephropathy. Kidney Blood Press Res 2019; 44:1063-1074. [PMID: 31487717 DOI: 10.1159/000502233] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 07/19/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Stress-induced cell senescence, which contributes to cell cycle arrest and is independent of age, plays an important role in chronic kidney disease (CKD) progression. DcR2, as a senescent marker, exclusively expressed in senescent tubular epithelia. The objective of this study was to examine whether urinary DcR2 (uDcR2) could be a potential biomarker for tubulointerstitial fibrosis (TIF) in patients with immunoglobulin A nephropathy (IgAN). METHODS This study included 210 IgAN patients and 80 healthy volunteers, with uDcR2 levels measured using enzyme-linked immunosorbent assay. We examined the relationship among uDcR2/Cr levels, renal function, and pathological parameters, using regression analysis to identify risk factors for TIF and the area under the curve (AUC) approach to predict TIF. Renal DcR2 expression was quantified by immunohistochemistry. Co-expression of DcR2 with fibrotic markers (α-smooth muscle actin [α-SMA], collagen III) was analyzed by confocal microscopy. RESULTS Levels of uDcR2/Cr were significantly higher in IgAN patients and in those with more severe TIF, compared with healthy controls. Serum DcR2 levels were similar across groups. The proportion of IgAN patients with stages 1-2 CKD and T0 was highest among those with uDcR2/Cr <130 ng/g. In contrast, the majority of those with uDcR2/Cr >201 ng/g had stages 4-5 CKD and T2. Levels of uDcR2/Cr were positively associated with urinary albumin to creatinine ratio (ACR), urinary N-acetyl-β-D-glucosaminidase (uNAG)/Cr, and TIF scores and negatively associated with estimated glomerular filtration rate (eGFR). uDcR2/Cr, uNAG, ACR, and eGFR were independent predictors for TIF, with AUC of 0.907 for uDcR2/Cr. This AUC value was higher than that observed for eGFR, uNAG/Cr, or ACR. The sensitivity and specificity of uDcR2/Cr in predicting TIF were 87.0 and 80.5%, respectively. Moreover, uDcR2/Cr levels were positively associated with the percentage of renal DcR2 expression. Renal DcR2 co-localized with α-SMA and collagen III in the kidneys of IgAN patients. CONCLUSIONS Levels of uDcR2/Cr were closely associated with the severity of TIF and renal function parameters. uDcR2/Cr represents a potential biomarker for predicting TIF in IgAN patients.
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Affiliation(s)
- Jia Chen
- Department of Nephrology, Daping Hospital, Research Institute of Surgery, Army Military Medical University, Chongqing, China
| | - Wei Hu
- Department of Nephrology, Daping Hospital, Research Institute of Surgery, Army Military Medical University, Chongqing, China.,Department of Nephrology, Army 958 Hospital, Chongqing, China
| | - Fei Xiao
- Department of Nephrology, Daping Hospital, Research Institute of Surgery, Army Military Medical University, Chongqing, China
| | - Lirong Lin
- Department of Nephrology, Daping Hospital, Research Institute of Surgery, Army Military Medical University, Chongqing, China
| | - Kehong Chen
- Department of Nephrology, Daping Hospital, Research Institute of Surgery, Army Military Medical University, Chongqing, China
| | - Liming Wang
- Department of Nephrology, Daping Hospital, Research Institute of Surgery, Army Military Medical University, Chongqing, China
| | - Xiaoyue Wang
- Department of Nephrology, Daping Hospital, Research Institute of Surgery, Army Military Medical University, Chongqing, China
| | - Yani He
- Department of Nephrology, Daping Hospital, Research Institute of Surgery, Army Military Medical University, Chongqing, China,
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Chen J, Zhang WW, Chen KH, Lin LR, Dai HZ, Li KL, Zhang JG, Zheng LQ, Fu BQ, He YN. Urinary DcR2 is a novel biomarker for tubulointerstitial injury in patients with diabetic nephropathy. Am J Physiol Renal Physiol 2017; 313:F273-F281. [PMID: 28356293 DOI: 10.1152/ajprenal.00689.2016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 03/23/2017] [Accepted: 03/23/2017] [Indexed: 01/09/2023] Open
Abstract
Tubulointerstitial injury (TII) plays a crucial role in the progression of diabetic nephropathy (DN), but lack of specific and sensitive biomarkers for monitoring TII in DN management. This study is to investigate whether urinary decoy receptor 2 (uDcR2) could serve as a novel noninvasive biomarker for assessing TII in DN. We recruited 311 type 2 diabetics and 139 DN patients who were diagnosed by renal biopsy. uDcR2 levels were measured by ELISA, and renal DcR2 expression was detected immunohistochemically. Associations between uDcR2 and renal DcR2 and renal functional parameters were evaluated. Receiver operating characteristics (ROC) curve analyzed area under the curve (AUC) of uDcR2 for assessing TII. Double staining was undertaken for renal DcR2 with proximal and distal tubular markers; senescent markers p16, p21, and senescence-associated β-galactosidase (SA-β-gal); and fibrotic markers collagen I and IV. We found DcR2 was primarily expressed in renal proximal tubules; uDcR2 levels were elevated per albuminuria stratum and correlated with renal functional parameters in diabetics and were associated with percentage of tubular DcR2 and TII score in DN. The uDcR2 had an AUC of 0.909 for assessing TII in DN by ROC analysis. Almost all tubular DcR2 was coexpressed with p16 and p21, and nearly more than one-half of tubular DcR2 was positive for SA-β-gal, primarily in collagen I- and IV-positive regions of DN. Our results indicate uDcR2 could potentially serve as a novel biomarker for TII and may reflect senescence of renal proximal tubular cells in DN pathogenesis.
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Affiliation(s)
- Jia Chen
- Department of Nephrology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Wei-Wei Zhang
- Department of Nephrology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Ke-Hong Chen
- Department of Nephrology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Li-Rong Lin
- Department of Nephrology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Huan-Zi Dai
- Department of Nephrology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Kai-Long Li
- Department of Nephrology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Jian-Guo Zhang
- Department of Nephrology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Lu-Quan Zheng
- Department of Nephrology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Bi-Qiong Fu
- Department of Nephrology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Ya-Ni He
- Department of Nephrology, Daping Hospital, Third Military Medical University, Chongqing, China
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Qian S, Yang X, Wu K, Lv Q, Zhang Y, Dai J, Chen C, Shi J. The changes of vaccinia related kinase 1 in grafted heart after rat heart transplantation. J Thorac Dis 2015; 6:1742-50. [PMID: 25589968 DOI: 10.3978/j.issn.2072-1439.2014.11.17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 10/22/2014] [Indexed: 11/14/2022]
Abstract
OBJECTIVE To assess the expression and significance of vaccinia-related kinase 1 (VRK1) after rat heart transplantation. MATERIALS AND METHODS Lewis and Wistar rats weighing 250 to 300 g were used as donors and recipients. Allografts were from Wistar transplanted into Lewis, and isografts were transplanted from Lewis into Lewis. Grafts were harvested at 1, 3, 5, and 7 days after transplantation. We performed Western Blot of heart tissues after cardiac transplantation. To analyze VRK1 express between the isografts and allografts for immunohistochemical staining. At 5th day after heart transplantation use related cytokines VRK1 for immunohistochemical. We used double immunofluorescent staining on transverse cryosections of graft tissues by co-labeling with different markers, including those for VRK1, activate caspase-3, α-actinin, VCAM-1, CD4. RESULTS Compared with rare expression in syngeneic Lewis rat hearts, VRK1 protein level in allogeneic hearts were detected at various survival times after heterotopic heart transplantation, which observably expressed on day 5 postoperative. In addition, we examined the expression of activate caspase-3 in allogeneic hearts, which has a similar expression with VRK1. Immunohistochemical and immunofluorescent method displayed that VRK1 was widely expressed in cytoplasm of cardiac tissue and activate caspase-3 was also expressed in cardiomyocytes. However, the VRK1 wasn't express in inflammation. CONCLUSIONS The VRK1 expression has increased after heart transplantation in allograft and isograft, and VRK1 may play a significant role in myocardial apoptosis after heterotopic heart transplantation in rats.
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Affiliation(s)
- Shiguo Qian
- 1 Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China ; 2 Department of Cardiothoracic Surgery, People's Hospital of Binhai County, Yancheng 224500, China
| | - Xuechao Yang
- 1 Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China ; 2 Department of Cardiothoracic Surgery, People's Hospital of Binhai County, Yancheng 224500, China
| | - Kunpeng Wu
- 1 Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China ; 2 Department of Cardiothoracic Surgery, People's Hospital of Binhai County, Yancheng 224500, China
| | - Qiangsheng Lv
- 1 Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China ; 2 Department of Cardiothoracic Surgery, People's Hospital of Binhai County, Yancheng 224500, China
| | - Yuanyuan Zhang
- 1 Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China ; 2 Department of Cardiothoracic Surgery, People's Hospital of Binhai County, Yancheng 224500, China
| | - Jiahong Dai
- 1 Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China ; 2 Department of Cardiothoracic Surgery, People's Hospital of Binhai County, Yancheng 224500, China
| | - Cheng Chen
- 1 Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China ; 2 Department of Cardiothoracic Surgery, People's Hospital of Binhai County, Yancheng 224500, China
| | - Jiahai Shi
- 1 Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China ; 2 Department of Cardiothoracic Surgery, People's Hospital of Binhai County, Yancheng 224500, China
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Shi J, Yang X, Yang D, Li Y, Liu Y. Pyruvate kinase isoenzyme M2 expression correlates with survival of cardiomyocytes after allogeneic rat heterotopic heart transplantation. Pathol Res Pract 2014; 211:12-9. [PMID: 25457184 DOI: 10.1016/j.prp.2014.10.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 08/08/2014] [Accepted: 10/13/2014] [Indexed: 11/29/2022]
Abstract
The aim of our study was to assess correlations between PKM2 and the survival of cardiomyocytes after heart transplantation in rat. The PKM2, Bcl-xl, active caspase-3 proteins were detected by western blot, and PKM2 was testified by immunohistochemistry and immunofluorescence. At the same time, active caspase-3, α-actinin, VCAM-1, and CD4 were detected by immunofluorescence. Compared with rare expression in syngeneic Lewis rat hearts, the PKM2 protein level in allogeneic hearts was detected at various survival times after transplantation, which prominently expressed on day five postoperatively. In addition, we examined the expression of Bcl-xl and active caspase-3 in allogeneic hearts, which has a similar expression pattern with PKM2. Immunohistochemical and immunofluorescent methods displayed that PKM2 was widely expressed in cardiac tissue, and active caspase-3 was also expressed in cardiomyocytes. However, the PKM2 was not expressed in T cells and other immune response cells. These results suggested that PKM2 may regulate the survival of cardiomyocytes in acute rejection after heart transplantation in rat.
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Affiliation(s)
- Jiahai Shi
- Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, People's Republic of China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong 226001, Jiangsu, People's Republic of China
| | - Xuechao Yang
- Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, People's Republic of China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong 226001, Jiangsu, People's Republic of China
| | - Dunpeng Yang
- Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, People's Republic of China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong 226001, Jiangsu, People's Republic of China
| | - Yangcheng Li
- Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, People's Republic of China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong 226001, Jiangsu, People's Republic of China
| | - Yonghua Liu
- Department of Pathogen Biology, Medical College, Nantong University, Nantong 226001, Jiangsu, People's Republic of China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong 226001, Jiangsu, People's Republic of China.
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