期刊
MOLECULAR AND CELLULAR ENDOCRINOLOGY
卷 374, 期 1-2, 页码 92-100出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.mce.2013.04.018
关键词
GnRH neurons; AXL; MET
资金
- National Institute of Health [HD31191]
The membrane tyrosine kinase receptors, AXL and MET, are implicated in GnRH neuron migration and/or survival. We hypothesized that the receptors with their ligands, GAS6 and HGF, respectively may crosstalk in GnRH neuronal function. In NLT GnRH neuronal cells, MET co-immunoprecipitated with AXL, although HGF or GAS6 did not transphosphorylate AXL or MET, respectively. Co-expression of a kinase dead AXL blocked HGF activation of MET and indirectly AKT and p38MAPK Silencing of AXL decreased HGF's ability to phosphorylate MET and activate AXL's downstream effectors, p38MAPK and AKT. HGF/MET signaling modulated neuron migration dependent and independent of AXL co-expression and p38MAPK. Conversely, AXL's control of GnRH neuronal survival was dependent on HGF/MET signaling. Together, these data support that the importance of membrane tyrosine kinase receptor crosstalk to regulate neuronal cell-specific developmental functions. (c) 2013 Elsevier Ireland Ltd. All rights reserved.
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