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- Publisher Website: 10.1038/onc.2011.7
- Scopus: eid_2-s2.0-79959850623
- PMID: 21317933
- WOS: WOS:000292245100007
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Article: P-cadherin cooperates with insulin-like growth factor-1 receptor to promote metastatic signaling of gonadotropin-releasing hormone in ovarian cancer via p120 catenin
Title | P-cadherin cooperates with insulin-like growth factor-1 receptor to promote metastatic signaling of gonadotropin-releasing hormone in ovarian cancer via p120 catenin | ||||||
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Authors | |||||||
Keywords | GnRH IGF-1R motility ovarian cancer P-cadherin p120ctn | ||||||
Issue Date | 2011 | ||||||
Publisher | Nature Publishing Group. The Journal's web site is located at http://www.nature.com/onc | ||||||
Citation | Oncogene, 2011, v. 30 n. 26, p. 2964-2974 How to Cite? | ||||||
Abstract | Gonadotropin-releasing hormone (GnRH) is a potent prometastatic factor in ovarian cancer, but the intracellular signaling events are not well understood. The classical Gα q-phospholipase C signal transduction pathway known to operate in the pituitary is not involved in GnRH actions at non-pituitary targets. Here we showed that GnRH treatment of ovarian cancer cells led to a rapid and remarkable tyrosine phosphorylation of p120 catenin (p120 ctn), which was mediated by P-cadherin. The use of P-cadherin small interfering RNA or neutralizing antibodies to inhibit P-cadherin expression and function resulted in diminished p120 ctn activation, confirming that the effect was P-cadherin specific. On exploring how P-cadherin, which lacks intrinsic kinase activity, might regulate the activation of p120 ctn, we found that P-cadherin could induce the ligand-independent activation of insulin-like growth factor-1 receptor (IGF-1R). Inhibition of IGF-1R expression or its activity significantly inhibited GnRH-induced p120 ctn activation, and the subsequent cell migration and invasion. In addition, we showed that IGF-1R regulation by P-cadherin was associated with complex formation between IGF-1R and P-cadherin, and this regulation was also observed to be in vivo correlated with metastasis. Furthermore, using a mouse model of ovarian cancer metastasis, GnRH receptor knockdown was shown to diminish peritoneal dissemination of tumors and ascites formation. These findings suggest for the first time that GnRH can initiate an outside-in p120 ctn signal transduction through the cross-talk between P-cadherin and IGF-1R, thus providing a novel molecular mechanism by which GnRH may control the high level of aggressiveness and invasion and metastasis potential that are characteristic of ovarian cancer. © 2011 Macmillan Publishers Limited All rights reserved. | ||||||
Persistent Identifier | http://hdl.handle.net/10722/135673 | ||||||
ISSN | 2023 Impact Factor: 6.9 2023 SCImago Journal Rankings: 2.334 | ||||||
ISI Accession Number ID |
Funding Information: We thank Dr N Auersperg for cell lines. This work was supported by Hong Kong Research Grant Council 778108 and HKU Outstanding Young Researcher Award (AST Wong). | ||||||
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cheung, LWT | en_HK |
dc.contributor.author | Mak, ASC | en_HK |
dc.contributor.author | Cheung, ANY | en_HK |
dc.contributor.author | Ngan, HYS | en_HK |
dc.contributor.author | Leung, PCK | en_HK |
dc.contributor.author | Wong, AST | en_HK |
dc.date.accessioned | 2011-07-27T01:39:11Z | - |
dc.date.available | 2011-07-27T01:39:11Z | - |
dc.date.issued | 2011 | en_HK |
dc.identifier.citation | Oncogene, 2011, v. 30 n. 26, p. 2964-2974 | en_HK |
dc.identifier.issn | 0950-9232 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/135673 | - |
dc.description.abstract | Gonadotropin-releasing hormone (GnRH) is a potent prometastatic factor in ovarian cancer, but the intracellular signaling events are not well understood. The classical Gα q-phospholipase C signal transduction pathway known to operate in the pituitary is not involved in GnRH actions at non-pituitary targets. Here we showed that GnRH treatment of ovarian cancer cells led to a rapid and remarkable tyrosine phosphorylation of p120 catenin (p120 ctn), which was mediated by P-cadherin. The use of P-cadherin small interfering RNA or neutralizing antibodies to inhibit P-cadherin expression and function resulted in diminished p120 ctn activation, confirming that the effect was P-cadherin specific. On exploring how P-cadherin, which lacks intrinsic kinase activity, might regulate the activation of p120 ctn, we found that P-cadherin could induce the ligand-independent activation of insulin-like growth factor-1 receptor (IGF-1R). Inhibition of IGF-1R expression or its activity significantly inhibited GnRH-induced p120 ctn activation, and the subsequent cell migration and invasion. In addition, we showed that IGF-1R regulation by P-cadherin was associated with complex formation between IGF-1R and P-cadherin, and this regulation was also observed to be in vivo correlated with metastasis. Furthermore, using a mouse model of ovarian cancer metastasis, GnRH receptor knockdown was shown to diminish peritoneal dissemination of tumors and ascites formation. These findings suggest for the first time that GnRH can initiate an outside-in p120 ctn signal transduction through the cross-talk between P-cadherin and IGF-1R, thus providing a novel molecular mechanism by which GnRH may control the high level of aggressiveness and invasion and metastasis potential that are characteristic of ovarian cancer. © 2011 Macmillan Publishers Limited All rights reserved. | en_HK |
dc.language | eng | en_US |
dc.publisher | Nature Publishing Group. The Journal's web site is located at http://www.nature.com/onc | en_HK |
dc.relation.ispartof | Oncogene | en_HK |
dc.subject | GnRH | en_HK |
dc.subject | IGF-1R | en_HK |
dc.subject | motility | en_HK |
dc.subject | ovarian cancer | en_HK |
dc.subject | P-cadherin | en_HK |
dc.subject | p120ctn | en_HK |
dc.subject.mesh | Cadherins - antagonists and inhibitors - genetics - physiology | - |
dc.subject.mesh | Carcinoma - genetics - pathology | - |
dc.subject.mesh | Catenins - genetics - metabolism - physiology | - |
dc.subject.mesh | Ovarian Neoplasms - genetics - pathology | - |
dc.subject.mesh | Receptor, IGF Type 1 - antagonists and inhibitors - genetics - physiology | - |
dc.title | P-cadherin cooperates with insulin-like growth factor-1 receptor to promote metastatic signaling of gonadotropin-releasing hormone in ovarian cancer via p120 catenin | en_HK |
dc.type | Article | en_HK |
dc.identifier.email | Cheung, ANY: anycheun@hkucc.hku.hk | en_HK |
dc.identifier.email | Ngan, HYS: hysngan@hkucc.hku.hk | en_HK |
dc.identifier.email | Wong, AST: awong1@hkucc.hku.hk | en_HK |
dc.identifier.authority | Cheung, ANY=rp00542 | en_HK |
dc.identifier.authority | Ngan, HYS=rp00346 | en_HK |
dc.identifier.authority | Wong, AST=rp00805 | en_HK |
dc.description.nature | link_to_OA_fulltext | - |
dc.identifier.doi | 10.1038/onc.2011.7 | en_HK |
dc.identifier.pmid | 21317933 | - |
dc.identifier.scopus | eid_2-s2.0-79959850623 | en_HK |
dc.identifier.hkuros | 186752 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-79959850623&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 30 | en_HK |
dc.identifier.issue | 26 | en_HK |
dc.identifier.spage | 2964 | en_HK |
dc.identifier.epage | 2974 | en_HK |
dc.identifier.eissn | 1476-5594 | - |
dc.identifier.isi | WOS:000292245100007 | - |
dc.publisher.place | United Kingdom | en_HK |
dc.identifier.scopusauthorid | Cheung, LWT=14119560800 | en_HK |
dc.identifier.scopusauthorid | Mak, ASC=7103123348 | en_HK |
dc.identifier.scopusauthorid | Cheung, ANY=54927484100 | en_HK |
dc.identifier.scopusauthorid | Ngan, HYS=34571944100 | en_HK |
dc.identifier.scopusauthorid | Leung, PCK=12782513900 | en_HK |
dc.identifier.scopusauthorid | Wong, AST=23987963300 | en_HK |
dc.identifier.citeulike | 8845954 | - |
dc.identifier.issnl | 0950-9232 | - |