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Zhang Y, Lai X, Yue Q, Cao F, Zhang Y, Sun Y, Tian J, Lu Y, He L, Bai J, Wei Y. Bone marrow mesenchymal stem cells-derived exosomal microRNA-16-5p restrains epithelial-mesenchymal transition in breast cancer cells via EPHA1/NF-κB signaling axis. Genomics 2022; 114:110341. [PMID: 35283197 DOI: 10.1016/j.ygeno.2022.110341] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 02/09/2022] [Accepted: 03/07/2022] [Indexed: 01/14/2023]
Abstract
OBJECTIVE This study intends to conquer the mystery of microRNA-16-5p/erythropoietin-producing hepatocellular A1/nuclear factor-κB signaling (miR-16-5p/EPHA1/NF-κB signaling) in breast cancer. METHODS Expression of miR-16-5p, EPHA1 and NF-κB signaling-related proteins were detected. Gene overexpression or silencing was used to examine the biological roles of bone marrow mesenchymal stem cells (BMSCs)-derived exo-miR-16-5p in breast cancer. The effect of exo-miR-16-5p on tumorigenesis of breast cancer was confirmed by the xenograft nude mouse model. RESULTS Low miR-16-5p and high EPHA1 expression were examined in breast cancer. BMSCs-derived exosomes, up-regulated miR-16-5p or down-regulated EPHA1 restrained epithelial-mesenchymal transition (EMT) of breast cancer cells and tumor growth in nude mice. Down-regulated miR-16-5p or up-regulated EPHA1 activated NF-κB signaling. Knockdown of EPHA1 or inhibition of NF-κB signaling reversed the effects of down-regulated miR-16-5p on breast cancer cells. CONCLUSION BMSCs-derived exosomal miR-16-5p hinders breast cancer cells progression via EPHA1/NF-κB signaling axis.
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Affiliation(s)
- Yuan Zhang
- Department of Oncology, Shaanxi Provincial People's Hospital, Xi'an 710068, Shaanxi, China
| | - Xiaofeng Lai
- Fujian Key Laboratory of Aptamer Technology, Affiliated Dongfang Hospital of School of Medicine, Xiamen University, China; Department of Clinical Laboratory Medicine, Fuzhou General Clinical Medical School, Fuzhou 350108, Fujian, China; the 900th Hospital, Fujian Medical University, Fuzhou 350108, Fujian, China
| | - Qingfang Yue
- Department of Oncology, Shaanxi Provincial People's Hospital, Xi'an 710068, Shaanxi, China
| | - Fei Cao
- Department of Oncology, Shaanxi Provincial People's Hospital, Xi'an 710068, Shaanxi, China
| | - Yue Zhang
- Department of Pathology, Shaanxi Provincial People's Hospital, Xi'an 710068, Shaanxi, China
| | - Yang Sun
- Xi'an Medical University, Xi'an 710021, Shaanxi, China
| | - Jun Tian
- Department of Dermatology, Shaanxi Provincial People's Hospital, Xi'an 710068, Shaanxi, China
| | - Yizhao Lu
- Department of Emergency, Shaanxi Provincial People's Hospital, Xi'an 710068, Shaanxi, China
| | - Li He
- Department of Oncology, Shaanxi Provincial People's Hospital, Xi'an 710068, Shaanxi, China
| | - Jun Bai
- Department of Oncology, Shaanxi Provincial People's Hospital, Xi'an 710068, Shaanxi, China
| | - Yifang Wei
- Center for Reproductive Medicine, Naval Medical Center, Second, Military Medical University, Shanghai 200052, China.
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Ma J, Wang Z, Chen S, Sun W, Gu Q, Li D, Zheng J, Yang H, Li X. EphA1 Activation Induces Neuropathological Changes in a Mouse Model of Parkinson's Disease Through the CXCL12/CXCR4 Signaling Pathway. Mol Neurobiol 2021; 58:913-925. [PMID: 33057926 DOI: 10.1007/s12035-020-02122-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 09/05/2020] [Indexed: 01/12/2023]
Abstract
There is increasing evidence that EphA1 is involved in the function and development of the central nervous system, especially in neuroinflammation. It has been found to affect the disease progression of Alzheimer's disease (AD) by regulating the neuroinflammatory process. Neuroinflammation has always been regarded as the mechanism of the development of Parkinson's disease (PD) and possible therapeutic targets. Therefore, it is worth studying whether EphA1 has a potential therapeutic value for PD. The purpose of this study is to investigate the effect of EphA1 in mice and PD cell models and its mechanism.In this study, we verified the difference in expression of EphA1 and the effect and mechanism of EphA1 on neuropathological changes through Parkinson's patient samples, Parkinson's mice model, and Parkinson's model prepared from SH-SY5Y cells in vitro.EphA1 was highly expressed in the substantia nigra (SN) region of Parkinson mice and the Parkinson cell model, while the expression of tyrosine hydroxylase (TH) in the SN region of Parkinson mice was significantly reduced. After silenced EphA1 in the SH-SY5Y cell PD model, the expression levels of α-synuclein, inflammatory factors, and microglia-activated chemokine decreased. The co-immunoprecipitation experiment proved that EphA1 overexpression could promote the binding of CXCL12 and CXCR4. However, after silenced EphA1 and CXCL12 at the same time, the above effects brought by silenced EphA1 were suppressed. The same result appeared in mice with PD.EphA1 improves the inflammatory responses and neuropathological changes of the PD model in vivo and in vitro through the CXCL12/CXCR4 signaling pathway. Graphical abstract.
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Affiliation(s)
- Jianjun Ma
- Department of Neurology, Henan Provincial People's Hospital, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China.
- People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China.
- People's Hospital of Henan University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China.
| | - Zhidong Wang
- Department of Neurology, Henan Provincial People's Hospital, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
| | - Siyuan Chen
- Department of Neurology, Henan Provincial People's Hospital, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- People's Hospital of Henan University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
| | - Wenhua Sun
- Department of Neurology, Henan Provincial People's Hospital, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
| | - Qi Gu
- Department of Neurology, Henan Provincial People's Hospital, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- People's Hospital of Henan University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
| | - Dongsheng Li
- Department of Neurology, Henan Provincial People's Hospital, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- People's Hospital of Henan University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
| | - Jinhua Zheng
- Department of Neurology, Henan Provincial People's Hospital, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- People's Hospital of Henan University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
| | - Hongqi Yang
- Department of Neurology, Henan Provincial People's Hospital, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- People's Hospital of Henan University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
| | - Xue Li
- Department of Neurology, Henan Provincial People's Hospital, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- People's Hospital of Henan University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
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Ephrin Receptors (Eph): EphA1, EphA5, and EphA7 Expression in Uveal Melanoma-Associations with Clinical Parameters and Patient Survival. Life (Basel) 2020; 10:life10100225. [PMID: 33007931 PMCID: PMC7601896 DOI: 10.3390/life10100225] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 09/27/2020] [Accepted: 09/28/2020] [Indexed: 12/17/2022] Open
Abstract
Uveal melanoma is the most common primary intraocular malignancy in adults. The development of distant metastases is associated with a poor prognosis. Ephrine receptors (Eph) are the largest subpopulation of tyrosine kinase receptors. They play an important role in processes related to the formation and progression of cancer. The aim of the study was to evaluate the expression of ephrin receptors EphA1, EphA5, and EphA7 in uveal melanoma and its associations with clinicopathological parameters, overall survival, and disease-free survival. The study included 94 previously untreated patients who underwent enucleation due to uveal melanoma. High expression of EphA1 was positively correlated with a smaller tumor size, less frequent extra-scleral extension, lower mitotic activity, and more frequent vitreous hemorrhage. High expression of EphA5 was associated with less frequent chromosome 3 loss, absence of distant metastases, and more frequent vitreous hemorrhage. High expression of EphA7 was associated with a more frequent primary tumor location in the posterior pole. High EphA5 expression was associated with longer overall survival time. The above findings indicate that high expression of EphA1 and EphA5 can be considered a beneficial prognostic factor in uveal melanoma.
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Wang YC, Dai Y, Xu GL, Yu W, Quan RL, Zhao YJ. Association Between EphA1 and Tumor Microenvironment in Gastric Carcinoma and its Clinical Significance. Med Sci Monit 2020; 26:e923409. [PMID: 32218416 PMCID: PMC7133419 DOI: 10.12659/msm.923409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 03/08/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND With the growing global burden of gastric carcinoma (GC) and the urgent need for biomolecular targeted therapies, this study aimed to elucidate the relationship between EphA1 and the tumor microenvironment (focusing primarily on the key inflammatory cytokines IL-6 and tumor angiogenic cytokine VEGF) to identify a new potential therapeutic target. MATERIAL AND METHODS IHC and qRT-PCR were performed to quantify the protein and gene expression levels of EphA1, IL-6, and VEGF in normal mucosal tissues, carcinoma tissues, and paracarcinomatous tissues from 57 GC patients. Spearman's rank correlation test was performed to determine the relationship between EphA1, IL-6, and VEGF expression levels. The relationships of EphA1 with clinicopathologic parameter and survival in GC patients were also evaluated. RESULTS The protein and gene expression levels of EphA1 were all attenuated gradually from carcinoma tissues to paracarcinomatous tissues and then to normal mucosal tissues in GC patients. Additionally, significant correlations between the overexpression of EphA1 with aggressive clinicopathological features and shorter survival time of GC patients were verified. In particular, we found a significant positive correlation between the expression of EphA1 and tumor microenvironment hallmark proteins IL-6 and VEGF in carcinoma tissues and paracarcinomatous tissues. CONCLUSIONS EphA1 can promote the occurrence and development of GC by its selective high expression in cancer tissues and its relationship with malignant clinical features and prognosis of GC patients. The underlying potential mechanism appears to involve enhancement of the tumor microenvironment, which via drives the expression of tumor microenvironment hallmark proteins IL-6 and VEGF.
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Affiliation(s)
- Yong-Cang Wang
- School of Medicine, Shandong University, Jinan, Shandong, P.R. China
- Department of Gastrointestinal Oncology Surgery, Anhui Provincial Cancer Hospital (West District of The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China), Hefei, Anhui, P.R. China
| | - Yin Dai
- Department of Gastrointestinal Oncology Surgery, Anhui Provincial Cancer Hospital (West District of The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China), Hefei, Anhui, P.R. China
| | - Ge-Liang Xu
- Department of Hepatic Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, P.R. China
| | - Wei Yu
- Department of Gastrointestinal Oncology Surgery, Anhui Provincial Cancer Hospital (West District of The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China), Hefei, Anhui, P.R. China
| | - Rui-Liang Quan
- Department of Gastrointestinal Oncology Surgery, Anhui Provincial Cancer Hospital (West District of The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China), Hefei, Anhui, P.R. China
| | - Ya-Jun Zhao
- Department of Gastrointestinal Oncology Surgery, Anhui Provincial Cancer Hospital (West District of The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China), Hefei, Anhui, P.R. China
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Jin Y, Zou Y, Wan L, Lu M, Liu Y, Huang G, Wang J, Xi Q. Decreased Eph receptor‑A1 expression is related to grade in ovarian serous carcinoma. Mol Med Rep 2018; 17:5409-5415. [PMID: 29393455 DOI: 10.3892/mmr.2018.8528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 10/09/2017] [Indexed: 11/06/2022] Open
Abstract
Eph receptor‑A1 (EphA1) was the first member of the erythropoietin producing hepatocellular carcinoma (Eph) family of receptor tyrosine kinases. Although the roles of EphA1 in the tumorigenesis of various human cancers have been investigated, few studies have focused on ovarian carcinoma. The present study aimed to explore the profile of EphA1 expression in ovarian carcinomas, to analyzed the association between EphA1 expression and clinicopathologic parameters, and to investigate the roles of overexpressed EphA1 in ovarian cancer cells. EphA1 protein was detected in ovarian cancer cell lines and in a set of formalin‑fixed tissues, including normal fallopian tube, ovarian benign serous cystadenoma, borderline serous tumors and serous carcinoma. Ovarian cancer cell lines HO8910 and A2780 were transiently transfected with EphA1‑pCMV6‑GFP plasmid, and the proliferation and apoptosis of cells were measured. The association between EphA1 expression and clinicopathological parameters was statistically analyzed. EphA1 expression was negative in HO8910 and weakly positive in A2780 cells. The proliferation rate was significantly reduced in ovarian cancer cells after transfection with EphA1 plasmid compared with cells transfected with mock plasmid or untreated cells, but no obvious alteration in apoptosis was detected among these groups. EphA1 expression was positively detected in all normal fallopian tubes (10/10, 100%) and ovarian benign serous cystadenomas (12/12, 100%) as well as in some borderline serous tumors (9/15, 60%) and ovarian serous carcinomas (33/76, 43.42%). EphA1 expression was associated with grade of ovarian serous carcinomas, with loss of EphA1 more often observed in high‑grade tumors (P=0.016) and high Ki67 index tumors (P=0.007). These data suggest that EphA1 might be a useful marker for distinguishing low grade from high‑grade ovarian serous carcinoma.
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Affiliation(s)
- Yunfeng Jin
- Department of Obstetrics and Gynecology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Yi Zou
- Department of Obstetrics and Gynecology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Linling Wan
- Department of Obstetrics and Gynecology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Mingming Lu
- Department of Obstetrics and Gynecology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Ya Liu
- Department of Obstetrics and Gynecology, Affiliated Haian People's Hospital of Nantong University, Nantong, Jiangsu 226600, P.R. China
| | - Guoqin Huang
- Department of Obstetrics and Gynecology, Affiliated Maternal and Child Health Care Hospital of Nantong University, Nantong, Jiangsu 226018, P.R. China
| | - Jiandong Wang
- Department of Pathology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Qinghua Xi
- Department of Obstetrics and Gynecology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
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Wang Y, Yu H, Shan Y, Tao C, Wu F, Yu Z, Guo P, Huang J, Li J, Zhu Q, Yu F, Song Q, Shi H, Zhou M, Chen G. EphA1 activation promotes the homing of endothelial progenitor cells to hepatocellular carcinoma for tumor neovascularization through the SDF-1/CXCR4 signaling pathway. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2016; 35:65. [PMID: 27066828 PMCID: PMC4827226 DOI: 10.1186/s13046-016-0339-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 04/04/2016] [Indexed: 01/01/2023]
Abstract
BACKGROUND Endothelial progenitor cells (EPCs) can migrate to the tumor tissue and enhance the angiogenesis of hepatocellular carcinoma (HCC); thus, they are associated with a poor prognosis. However, the specific molecular mechanism underlying the homing of EPCs to the HCC neovasculature remains unrevealed. METHODS Co-culture experiments of endothelial progenitor cells with HCC cells with modulation of EphA1 were performed in vitro. Using EPCs as angiogenic promoters by injecting them into HCC xenograft-bearing nude mice via their tail veins to test homing ability of EPCs changed according to different EphA1 level in HCC xenograft. RESULTS In this study, we found that the up-regulation of EphA1 expression in HCC cells could affect not only the chemotaxis of EPCs to tumor cells and endothelial cells (ECs) but also the tube formation ability of EPCs in a paracrine fashion. Further, we revealed that the increased expression of EphA1 in HCC cells led to an increased SDF-1 concentration in the tumor microenvironment, which in turn activated the SDF-1/CXCR4 axis and enhanced the recruitment of EPCs to HCC. In addition, the EphA1-activated SDF-1 expression and secretion was partially mediated by the PI3K and mTOR pathways. In vivo experiments demonstrated that blocking EphA1/SDF-1/CXCR4 signaling significantly inhibited the growth of HCC xenografts. Using immunohistochemistry and immunofluorescence assays, we verified that the inhibition of tumor angiogenesis was at least partially caused by the decreased number of EPCs homing to tumor tissue. CONCLUSIONS Our findings indicate that targeting the EphA1/SDF-1 signaling pathway might be a therapeutic anti-angiogenesis approach for treating HCC.
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Affiliation(s)
- Yi Wang
- Environmental and Public Health School of Wenzhou Medical University, Wenzhou, 325000, China
| | - Haitao Yu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, China
| | - Yunfeng Shan
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, China
| | - Chonglin Tao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, China
| | - Fang Wu
- Department of Gastroenterology, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, China
| | - Zhengping Yu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, China
| | - Pengyi Guo
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, China
| | - Jianfei Huang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, China
| | - Junjian Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, China
| | - Qiandong Zhu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, China
| | - Fuxiang Yu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, China
| | - Qitong Song
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, China
| | - Hongqi Shi
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, China
| | - Mengtao Zhou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, China.
| | - Gang Chen
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, China.
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Eph/ephrin signaling in the kidney and lower urinary tract. Pediatr Nephrol 2016; 31:359-71. [PMID: 25903642 DOI: 10.1007/s00467-015-3112-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 03/30/2015] [Accepted: 03/31/2015] [Indexed: 02/06/2023]
Abstract
Development and homeostasis of the highly specialized cell types and tissues that constitute the organs of the urinary system, the kidneys and ureters, the bladder, and the urethra, require the tightly regulated exchange of signals in and between these tissues. Eph/ephrin signaling is a bidirectional signaling pathway that has been functionally implicated in many developmental and homeostatic contexts, most prominently in the vascular and neural system. Expression and knockout analyses have now provided evidence that Eph/ephrin signaling is of crucial relevance for cell and tissue interactions in the urinary system as well. A clear requirement has emerged in the formation of the vesicoureteric junction, in urorectal septation and glomerulogenesis during embryonic development, in maintenance of medullary tubular cells and podocytes in homeostasis, and in podocyte and glomerular injury responses. Deregulation of Eph/ephrin signaling may also contribute to the formation and progression of tumors in the urinary system, most prominently bladder and renal cell carcinoma. While in the embryonic contexts Eph/ephrin signaling regulates adhesion of epithelial cells, in the adult setting, cell-shape changes and cell survival seem to be the primary cellular processes mediated by this signaling module. With progression of the genetic analyses of mice conditionally mutant for compound alleles of Eph receptor and ephrin ligand genes, additional essential functions are likely to arise in the urinary system.
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Nakagawa M, Inokuchi M, Takagi Y, Kato K, Sugita H, Otsuki S, Kojima K, Uetake H, Sugihara K. Erythropoietin-Producing Hepatocellular A1 is an Independent Prognostic Factor for Gastric Cancer. Ann Surg Oncol 2014; 22:2329-35. [DOI: 10.1245/s10434-014-4231-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Indexed: 12/25/2022]
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Toma MI, Erdmann K, Diezel M, Meinhardt M, Zastrow S, Fuessel S, Wirth MP, Baretton GB. Lack of ephrin receptor A1 is a favorable independent prognostic factor in clear cell renal cell carcinoma. PLoS One 2014; 9:e102262. [PMID: 25025847 PMCID: PMC4099180 DOI: 10.1371/journal.pone.0102262] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 06/16/2014] [Indexed: 01/02/2023] Open
Abstract
The EPH receptor tyrosine kinases and their cell-bound ligands, the ephrins, have been shown to be associated with cancer development and progression. In this study, mRNA and protein expression of the receptors EPHA1 and EPHA2 as well as of their ligand EFNA1 and their prognostic relevance in clear cell renal cell carcinoma was evaluated. Gene expression was measured in 75 cryo-preserved primary tumors and matched non-malignant renal specimens by quantitative PCR. Protein expression was analyzed by immunohistochemistry on tissue microarrays comprising non-malignant, primary tumors and metastatic renal tissues of 241 patients. Gene and protein expression of all three factors was altered in tumor specimens with EPHA1 and EPHA2 being generally diminished in tumors compared to normal renal tissue, whereas EFNA1 was commonly elevated. A positive EPHA1 and EPHA2 protein staining as well as a low EFNA1 protein level were significantly linked to more aggressive tumor features, but only a positive EPHA1 immunoreactivity was significantly associated with poor survival. In subgroup analyses, EPHA1 and EPHA2 protein levels were significantly higher in metastatic than in primary lesions. Patients with EPHA1/EPHA2-positive tumors or with tumors with positive EPHA1 and low EFNA1 immunoreactivity had the shortest survival rates compared to the respective other combinations. In a multivariate model, EPHA1 was an independent prognostic marker for different survival endpoints. In conclusion, an impaired EPH-ephrin signaling could contribute to the pathogenesis and progression of clear cell renal cell carcinoma.
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Affiliation(s)
- Marieta I. Toma
- Institute of Pathology, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
- * E-mail:
| | - Kati Erdmann
- Department of Urology, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Michael Diezel
- Institute of Pathology, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Matthias Meinhardt
- Institute of Pathology, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Stefan Zastrow
- Department of Urology, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Susanne Fuessel
- Department of Urology, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Manfred P. Wirth
- Department of Urology, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Gustavo B. Baretton
- Institute of Pathology, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
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Ogawa K, Saeki N, Igura Y, Hayashi Y. Complementary expression and repulsive signaling suggest that EphB2 and ephrin-B1 are possibly involved in epithelial boundary formation at the squamocolumnar junction in the rodent stomach. Histochem Cell Biol 2013; 140:659-75. [PMID: 23881165 DOI: 10.1007/s00418-013-1129-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/09/2013] [Indexed: 12/22/2022]
Abstract
Eph receptors and ephrin ligands are cell-cell communication molecules with well-defined roles in cell adhesion, migration, and tissue boundary formation. However, their expression levels in the squamocolumnar epithelial junction region at the distal esophagus are completely unknown. We examined EphB2 and ephrin-B1 localization in the squamocolumnar epithelial junction region between the proximal and distal stomach of the rodents. Immunostaining showed complimentary expression patterns along the proximal-to-distal axis of the gastric epithelia across the junction: EphB2 expression was maximal around the epithelial junction and sharply decreased in the stratified squamous epithelium at a short distance from the junction, whereas ephrin-B1 was strongly expressed in the stratified squamous epithelium at a distance from the junction and sharply decreased toward the junction. These expression patterns suggest that EphB2/ephrin-B1 signaling occurs preferentially in the epithelia across the junction, where the receptor and ligand expression highly overlap. We also show that (1) EphB2 preferentially binds ephrin-B1, and (2) cell repulsion/lateral migration was induced in primary cultured gastric keratinocytes on ephrin-B1-Fc- and EphB2-Fc-coated surfaces. On the basis of these findings, we propose that EphB2 and ephrin-B1 are possibly involved in epithelial boundary formation at the squamocolumnar junction.
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Affiliation(s)
- Kazushige Ogawa
- Laboratory of Veterinary Anatomy, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-Ourai-Kita, Izumisano, Osaka, 598-8531, Japan,
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