1
|
Daum F, Flockerzi F, Bozzato A, Schick B, Tschernig T. TRPC6 is ubiquitously present in lymphatic tissues: A study using samples from body donors. MEDICINE INTERNATIONAL 2024; 4:62. [PMID: 39161881 PMCID: PMC11332316 DOI: 10.3892/mi.2024.186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Accepted: 07/24/2024] [Indexed: 08/21/2024]
Abstract
Transient receptor potential canonical channel 6 (TRPC6) is a non-selective cation channel that is activated by diacylglycerol. It belongs to the TRP superfamily, is expressed in numerous tissues and has been shown to be associated with diseases, such as focal segmental glomerulosclerosis, idiopathic pulmonary arterial hypertension and cardiac hypertrophy. The investigation of the channel in human lymphoid tissues has thus far been limited to mRNA analysis or the western blotting of isolated lymphoid cell lines. The present study aimed to detect the channel in human lymphoid tissue using immunohistochemistry. For this purpose, lymphatic tissues were obtained from body donors. The lymphatic organs analyzed included the lymph nodes, spleen, palatine tonsil, gut-associated lymphoid tissues (ileum and vermiform appendix) and thymus. A total of 102 samples were obtained and processed for hematoxylin and eosin (H&E) staining. The H&E staining method was employed to identify five samples with good morphology. In total, three samples of the palatine tonsil of patients were included. Immunostaining was carried out using a knockout-validated anti-TRPC6 antibody. As shown by the results, using immunohistochemical staining, the presence of TRPC6 was confirmed in all the analyzed lymphatic tissue samples. Lymphocytes in lymph nodes, spleen, palatine tonsil, thymus, and gut-associated lymphatic tissues in ileum and vermiform appendix exhibited a positive staining signal. The follicle-associated epithelium of the palatine tonsil, ileum and appendix also demonstrated staining. Vessels of the lymphatic organs, particularly the trabecular arteries of the spleen, the submucosal vessels of the appendix and ileum, as well as the high endothelial venules in the palatine tonsils and lymphatic vessels of the lymph nodes expressed TRPC6 protein. TRPC6 in follicles may be involved in the immune response. TRPC6 in high endothelial venules suggests a role in leukocyte migration. The role of TRPC6 and other channels of the TRP family in lymphatic organs warrant further investigations to elucidate whether TRP channels are a pharmacological target.
Collapse
Affiliation(s)
- Felix Daum
- Institute of Anatomy and Cell Biology, Faculty of Medicine, Saarland University, D-66421 Homburg/Saar, Germany
| | - Fidelis Flockerzi
- Institute of Pathology, Faculty of Medicine, Saarland University, D-66421 Homburg/Saar, Germany
| | - Alessandro Bozzato
- Department of Otorhinolaryngology, Faculty of Medicine, Saarland University, D-66421 Homburg/Saar, Germany
| | - Bernhard Schick
- Department of Otorhinolaryngology, Faculty of Medicine, Saarland University, D-66421 Homburg/Saar, Germany
| | - Thomas Tschernig
- Institute of Anatomy and Cell Biology, Faculty of Medicine, Saarland University, D-66421 Homburg/Saar, Germany
| |
Collapse
|
2
|
Saqib U, Munjuluri S, Sarkar S, Biswas S, Mukherjee O, Satsangi H, Baig MS, Obukhov AG, Hajela K. Transient Receptor Potential Canonical 6 (TRPC6) Channel in the Pathogenesis of Diseases: A Jack of Many Trades. Inflammation 2023:10.1007/s10753-023-01808-3. [PMID: 37072606 PMCID: PMC10112830 DOI: 10.1007/s10753-023-01808-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/18/2023] [Accepted: 03/23/2023] [Indexed: 04/20/2023]
Abstract
The mammalian Transient Receptor Potential Canonical (TRPC) subfamily comprises seven transmembrane proteins (TRPC1-7) forming cation channels in the plasma membrane of mammalian cells. TRPC channels mediate Ca2+ and Na+ influx into the cells. Amongst TRPCs, TRPC6 deficiency or increased activity due to gain-of-function mutations has been associated with a multitude of diseases, such as kidney disease, pulmonary disease, and neurological disease. Indeed, the TRPC6 protein is expressed in various organs and is involved in diverse signalling pathways. The last decade saw a surge in the investigative studies concerning the physiological roles of TRPC6 and describing the development of new pharmacological tools modulating TRPC6 activity. The current review summarizes the progress achieved in those investigations.
Collapse
Affiliation(s)
- Uzma Saqib
- School of Life Sciences, Devi Ahilya Vishwavidyalaya, Vigyan Bhawan, Khandwa Road Campus, Indore, 452 001, MP, India
| | - Sreepadaarchana Munjuluri
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Sutripta Sarkar
- Post Graduate Department of Food and Nutrition, Barrackpore Rastraguru Surendranath College, 85, Middle Road, Barrackpore, 700120, West Bengal, India
| | - Subir Biswas
- Ramky One Galaxia, Nallagandla, Hyderabad, 500019, Telangana, India
| | - Oyshi Mukherjee
- Post Graduate Department of Food and Nutrition, Barrackpore Rastraguru Surendranath College, 85, Middle Road, Barrackpore, 700120, West Bengal, India
| | | | - Mirza S Baig
- Department of Biosciences and Biomedical Engineering (BSBE), Indian Institute of Technology Indore (IITI), Indore, India
| | - Alexander G Obukhov
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA.
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, 46202, USA.
| | - Krishnan Hajela
- School of Life Sciences, Devi Ahilya Vishwavidyalaya, Vigyan Bhawan, Khandwa Road Campus, Indore, 452 001, MP, India.
| |
Collapse
|
3
|
Bai LP, Chen YL, Zheng A. Pharmacological targeting transient receptor potential canonical channel 6 modulates biological behaviors for cervical cancer HeLa and SiHA cell. Cancer Cell Int 2022; 22:145. [PMID: 35392906 PMCID: PMC8991836 DOI: 10.1186/s12935-022-02556-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 03/18/2022] [Indexed: 11/10/2022] Open
Abstract
Background This study aimed to observe the effect of transient receptor potential canonical channel 6 (TRPC6) antagonist 1-(β-[3-(4-method-phenyl) propoxy]-4-methoxyphenethyl)-1H-imidazole hydrate (SKF-96365) and its agonist 1-oleoyl-2-acetyl-sn-glycerol (OAG) on the proliferation of cervical cancer cell lines HeLa and SiHa, deoxyribonucleic acid (DNA) synthesis, cell migration, and TRPC6 expression. Method Real-time quantitative polymerase chain reaction (RT-qPCR) and western blotting were used to detect the expression of TRPC6 in HeLa and SiHa cells. The tetrazolium salt 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, the 5-ethynyl -2'- deoxyuridine (EdU) fluorescence detection assay, and a scratch test were used to detect the changes of proliferation, DNA synthesis and cell migration of HeLa and SiHa cells after SKF 96,365 and OAG acted on HeLa and SiHa cells for different lengths of time. RT-qPCR was used to detect expression changes of TRPC6 SKF-96365 and OAG treated HeLa and SiHa cells. Results TRPC6 was expressed both in HeLa and SiHa cells. The MTT assay showed that after 24 h of SKF-96365 treatment, compared with the control group, the proliferation of HeLa and SiHa cells was inhibited, and there was a statistically significant difference (p < 0.05). After 24 h of OAG, compared with the control group, the proliferation of HeLa and SiHa cells had increased, and there was a statistically significant difference (p < 0.05). EdU fluorescence detection showed that SKF-96365 could inhibit the DNA synthesis of HeLa and SiHa cells, and OAG could promote the DNA synthesis of HeLa and SiHa cells (p < 0.05) in HeLa and SiHa cell lines. Conclusion The high expression of calcium channel TRPC6 in HeLa and SiHa tissues may be related to the malignant behavior of cervical cancer cell lines HeLa and SiHa. This calcium channel may be a new target for the prevention and treatment of cervical cancer.
Collapse
Affiliation(s)
- Li-Ping Bai
- Department of Gynaecology and Obstetrics, West China Second University Hospital, Sichuan University, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, No. 20, Renmin South Road, Wuhou District, Chengdu, 610041, China
| | - Ya-Li Chen
- Department of Gynaecology and Obstetrics, West China Second University Hospital, Sichuan University, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, No. 20, Renmin South Road, Wuhou District, Chengdu, 610041, China.
| | - Ai Zheng
- Department of Gynaecology and Obstetrics, West China Second University Hospital, Sichuan University, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, No. 20, Renmin South Road, Wuhou District, Chengdu, 610041, China.
| |
Collapse
|
4
|
Ghavideldarestani M, Butler AE, Shirian S, Atkin SL. Expression and localization of transient receptor potential channels in the bovine uterus epithelium throughout the estrous cycle. Mol Biol Rep 2019; 46:4077-4084. [PMID: 31087243 DOI: 10.1007/s11033-019-04857-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Accepted: 05/03/2019] [Indexed: 12/14/2022]
Abstract
Transient receptor potential (TRP) channels are expressed in the endometrium but it is unknown if they are modulated through the estrous cycle (EC). This study was undertaken to identify the modulation of the TRPC gene and protein isoforms in bovine uterine epithelium, as a model for human, throughout the EC. Changes in the expression of TRPC genes in bovine uterine epithelium throughout the EC were measured using Real-Time PCR, while immunohistochemistry and immunocytochemistry were used to determine the localization of these channels. Out of the 7 members of the TRPC family, TRPC1, 2, 3, 4 and 6 genes were expressed in bovine uterine epithelial tissue and TRPC 5 and 7 were not. Gene expression levels of all TRPC isoforms underwent cyclical changes throughout the EC. Moreover, cyclical changes were detected in the protein levels of TRPC1 and TRPC6 throughout the EC. These findings show that TRPC channels are modulated through the EC and therefore may have a role in reproductive events.
Collapse
Affiliation(s)
| | | | - Sadegh Shirian
- Department of Pathology, School of Veterinary Medicine, Shahrekord University, Shahrekord, Iran.,Shiraz Molecular Pathology Research Center, Dr Daneshbod Pathol Lab, Shiraz, Iran.,Biotechnology Research Inistitute, Shahrekord University, Shahrekord, Iran
| | - Stephen L Atkin
- Weill Cornell Medical College Qatar, Qatar Foundation, Education City, PO Box 24144, Doha, Qatar.
| |
Collapse
|
5
|
Inhibition of TRPC6 reduces non-small cell lung cancer cell proliferation and invasion. Oncotarget 2018; 8:5123-5134. [PMID: 28030826 PMCID: PMC5341750 DOI: 10.18632/oncotarget.14034] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 11/11/2016] [Indexed: 11/25/2022] Open
Abstract
Recent studies indicate that the transient receptor potential canonical 6 (TRPC6) channel is highly expressed in several types of cancer cells. However, it remains unclear whether TRPC6 contributes to the malignancy of human non-small cell lung cancer (NSCLC). We used a human NSCLC A549 cell line as a model and found that pharmacological blockade or molecular knockdown of TRPC6 channel inhibited A549 cell proliferation by arresting cell cycle at the S-G2M phase and caused a significant portion of cells detached and rounded-up, but did not induce any types of cell death. Western blot and cell cycle analysis show that the detached round cells at the S-G2M phase expressed more TRPC6 than the still attached polygon cells at the G1 phase. Patch-clamp data also show that TRPC whole-cell currents in the detached cells were significantly higher than in the still attached cells. Inhibition of Ca2+-permeable TRPC6 channels significantly reduced intracellular Ca2+ in A549 cells. Interestingly, either blockade or knockdown of TRPC6 strongly reduced the invasion of this NSCLC cell line and decreased the expression of an adherent protein, fibronectin, and a tight junction protein, zonula occluden protein-1 (ZO-1). These data suggest that TRPC6-mediated elevation of intracellular Ca2+ stimulates NSCLC cell proliferation by promoting cell cycle progression and that inhibition of TRPC6 attenuates cell proliferation and invasion. Therefore, further in vivo studies may lead to a consideration of using a specific TRPC6 blocker as a complement to treat NSCLC.
Collapse
|
6
|
Yang H, Hu H, Gou Y, Hu Y, Li H, Zhao H, Wang B, Li P, Zhang Z. Combined detection of Twist1, Snail1 and squamous cell carcinoma antigen for the prognostic evaluation of invasion and metastasis in cervical squamous cell carcinoma. Int J Clin Oncol 2017; 23:321-328. [PMID: 29101499 DOI: 10.1007/s10147-017-1210-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 10/17/2017] [Indexed: 01/05/2023]
Abstract
BACKGROUND Cervical cancer is one of the most common malignant tumours of the female reproductive system, ranking second only to breast cancer in morbidity worldwide. Essential features of the progression of cervical cancer are invasion and metastasis, which are closely related to disease prognosis and mortality rate. At the present time there is no effective method to evaluate cancer invasion and metastasis before surgery. Here we report our study on molecular changes in biopsy tissue for the prognostic evaluation of cancer invasion and metastasis. PATIENTS AND METHODS Expression of the epithelial-mesenchymal transition-inducing transcription factors Twist1 and Snail1 was detected by immunohistochemistry in 32 normal, 36 low-grade squamous intraepithelial neoplasia (LSIL), 54 high-grade squamous intraepithelial neoplasia (HSIL) and 320 cervical squamous cell carcinoma (CSCC) samples. The correlation between the expression of Twist1, Snail1 and squamous cell carcinoma antigen (SCCA) in CSCC tissues and clinical pathology results was evaluated. A transwell migration and invasion assay was used to explore the roles of Twist1 and Snail1 in the invasion of cancer cells. Lymph node metastasis and lymphovascular space invasion (LVSI) rates for the following groups were analysed: SCCA(+) group, Twist1(+) group, Snail1(+) group, Twist1(+)Snail1(+)group, Twist1(+)SCCA(+)group, Snail1(+)SCCA(+)group and Twist1(+)Snail1(+)SCCA(+) group. RESULTS The expression of Twist1 and Snail1 was significantly upregulated in HSIL and CSCC (p < 0.05). Twist1 and Snail1 expression levels were associated with LVSI, lymph node metastasis and histological grade (p < 0.05) but not with age or FIGO stage (p > 0.05). The expression of SCCA was associated with LVSI, lymph node metastasis, FIGO stage and histological grade (p < 0.05) but not with age (p > 0.05). Twist1 was an independent factor contributing to the invasion ability of cervical cancer cells. In addition, the positive rate of lymph node metastasis and LVSI was higher in the Twist1(+)Snail1(+)SCCA(+) group than in the SCCA(+) group, Twist1(+) group and Snail1(+) group, respectively (p < 0.05). CONCLUSION Combined detection of Twist1 and Snail1 in SCCA-positive biopsy specimens may be a potential method for evaluating the invasion and metastasis of CSCC prior to surgery.
Collapse
Affiliation(s)
- Huilun Yang
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China.,Department of Obstetrics and Gynecology, The First People's Hospital of Yangzhou, Yangzhou, 225000, China
| | - Haiyang Hu
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China.,Department of Obstetrics and Gynecology, Affiliated Hospital of Jining Medical University, Jining, 272000, China
| | - Yanling Gou
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China
| | - Yuhong Hu
- Department of Obstetrics and Gynecology, The First Hospital Affiliated to Jiamusi University, Jiamusi, China
| | - Hui Li
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China
| | - Hongwei Zhao
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China
| | - Beidi Wang
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China
| | - Peiling Li
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China
| | - Zongfeng Zhang
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China.
| |
Collapse
|
7
|
Maulik U, Mallik S, Mukhopadhyay A, Bandyopadhyay S. Analyzing large gene expression and methylation data profiles using StatBicRM: statistical biclustering-based rule mining. PLoS One 2015; 10:e0119448. [PMID: 25830807 PMCID: PMC4382191 DOI: 10.1371/journal.pone.0119448] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 01/22/2015] [Indexed: 11/18/2022] Open
Abstract
Microarray and beadchip are two most efficient techniques for measuring gene expression and methylation data in bioinformatics. Biclustering deals with the simultaneous clustering of genes and samples. In this article, we propose a computational rule mining framework, StatBicRM (i.e., statistical biclustering-based rule mining) to identify special type of rules and potential biomarkers using integrated approaches of statistical and binary inclusion-maximal biclustering techniques from the biological datasets. At first, a novel statistical strategy has been utilized to eliminate the insignificant/low-significant/redundant genes in such way that significance level must satisfy the data distribution property (viz., either normal distribution or non-normal distribution). The data is then discretized and post-discretized, consecutively. Thereafter, the biclustering technique is applied to identify maximal frequent closed homogeneous itemsets. Corresponding special type of rules are then extracted from the selected itemsets. Our proposed rule mining method performs better than the other rule mining algorithms as it generates maximal frequent closed homogeneous itemsets instead of frequent itemsets. Thus, it saves elapsed time, and can work on big dataset. Pathway and Gene Ontology analyses are conducted on the genes of the evolved rules using David database. Frequency analysis of the genes appearing in the evolved rules is performed to determine potential biomarkers. Furthermore, we also classify the data to know how much the evolved rules are able to describe accurately the remaining test (unknown) data. Subsequently, we also compare the average classification accuracy, and other related factors with other rule-based classifiers. Statistical significance tests are also performed for verifying the statistical relevance of the comparative results. Here, each of the other rule mining methods or rule-based classifiers is also starting with the same post-discretized data-matrix. Finally, we have also included the integrated analysis of gene expression and methylation for determining epigenetic effect (viz., effect of methylation) on gene expression level.
Collapse
Affiliation(s)
- Ujjwal Maulik
- Department of Computer Science and Engineering, Jadavpur University, Kolkata, West Bengal, India
| | - Saurav Mallik
- Machine Intelligence Unit, Indian Statistical Institute, Kolkata, West Bengal, India
| | - Anirban Mukhopadhyay
- Department of Computer Science and Engineering, University of Kalyani, Kalyani, West Bengal, India
| | | |
Collapse
|
8
|
Lovastatin inhibits human B lymphoma cell proliferation by reducing intracellular ROS and TRPC6 expression. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2014; 1843:894-901. [PMID: 24518247 DOI: 10.1016/j.bbamcr.2014.02.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 01/17/2014] [Accepted: 02/02/2014] [Indexed: 12/21/2022]
Abstract
Clinical evidence suggests that statins reduce cancer incidence and mortality. However, there is lack of in vitro data to show the mechanism by which statins can reduce the malignancies of cancer cells. We used a human B lymphoma Daudi cells as a model and found that lovastatin inhibited, whereas exogenous cholesterol (Cho) stimulated, proliferation cell cycle progression in control Daudi cells, but not in the cells when transient receptor potential canonical 6 (TRPC6) channel was knocked down. Lovastatin decreased, whereas Cho increased, the levels of intracellular reactive oxygen species (ROS) respectively by decreasing or increasing the expression of p47-phox and gp91-phox (NOX2). Reducing intracellular ROS with either a mimetic superoxide dismutase (TEMPOL) or an NADPH oxidase inhibitor (apocynin) inhibited cell proliferation, particularly in Cho-treated cells. The effects of TEMPOL or apocynin were mimicked by inhibition of TRPC6 with SKF-96365. Lovastatin decreased TRPC6 expression and activity via a Cho-dependent mechanism, whereas Cho increased TRPC6 expression and activity via an ROS-dependent mechanism. Consistent with the fact that TRPC6 is a Ca(2+)-permeable channel, lovastatin decreased, but Cho increased, intracellular Ca(2+) also via ROS. These data suggest that lovastatin inhibits malignant B cell proliferation by reducing membrane Cho, intracellular ROS, TRPC6 expression and activity, and intracellular Ca(2+).
Collapse
|
9
|
High expression of transient potential receptor C6 correlated with poor prognosis in patients with esophageal squamous cell carcinoma. Med Oncol 2013; 30:607. [PMID: 23686700 DOI: 10.1007/s12032-013-0607-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Accepted: 05/10/2013] [Indexed: 02/07/2023]
Abstract
TRPC6 plays a crucial role in the tumor progression of various cancers. The relation between the expression of TRPC6 and clinical prognosis has not been studied yet. Our study was to elucidate the role of TRPC6 in predicting outcomes of patients with esophageal squamous cell carcinoma (ESCC). Fresh frozen samples were collected immediately from 172 patients with ESCC after surgical resection from 2003 to 2008 at Sun Yat-sen University Cancer Center, including 45 pairs of tumor tissues and nontumor tissues. TRPC6 expression was measured by quantitative real-time PCR and Western blotting analyses. TRPC6 mRNA and protein were up-regulated in ESCC tissues when compared with the paired nontumor tissues. High expression of TRPC6 mRNA was associated with the higher pT status (P = 0.016) and pathological staging (P = 0.040). The 5-year disease-specific survival in the high expression of TRPC6 mRNA group (>188.98, n = 81) is poorer than that in low-level expression group (≤188.98, n = 91) (42.1 vs. 62.7 %, P = 0.004). Stratified analysis according to the pathological stage revealed its discernibility on DSS was only pronounced in patients with pStage III (P = 0.015). Cox multivariate analysis revealed that pN category (P < 0.001; Relative risk, 2.897, 95 % CI 1.830-4.585) and the expression of TRPC6 mRNA (P = 0.006; Relative risk, 1.863, 95 % CI 1.196-2.902) were independent prognostic factors. TRPC6 mRNA overexpression correlated with poor prognosis in patients with ESCC and might serve as a novel prognostic biomarker for resected ESCC patients in advanced stage.
Collapse
|