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GDNF family receptor alpha 1 OKDB#: 3355
 Symbols: GFRA1 Species: human
 Synonyms: GDNFR, RET1L, RETL1, TRNR1, GDNFRA, GFR-ALPHA-1  Locus: 10q25.3 in Homo sapiens
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General Comment NCBI Summary: This gene encodes a member of the glial cell line-derived neurotrophic factor receptor (GDNFR) family of proteins. The encoded preproprotein is proteolytically processed to generate the mature receptor. Glial cell line-derived neurotrophic factor (GDNF) and neurturin (NTN) are two structurally related, potent neurotrophic factors that play key roles in the control of neuron survival and differentiation. This receptor is a glycosylphosphatidylinositol (GPI)-linked cell surface receptor for both GDNF and NTN, and mediates activation of the RET tyrosine kinase receptor. This gene is a candidate gene for Hirschsprung disease. Alternative splicing results in multiple transcript variants, at least one of which encodes a preproprotein that is proteolytically processed. [provided by RefSeq, Jan 2016]
General function Receptor
Comment
Cellular localization Plasma membrane
Comment
Ovarian function Early embryo development
Comment Growth arrest specific 1 (Gas1) and glial cell line-derived neurotrophic factor receptor α1 (Gfrα1), two mouse oocyte glycosylphosphatidylinositol-anchored proteins, are involved in fertilisation. Agopiantz M et al. (2017) Recently, Juno, the oocyte receptor for Izumo1, a male immunoglobulin, was discovered. Juno is an essential glycosylphosphatidylinositol (GIP)-anchored protein. This result did not exclude the participation of other GIP-anchored proteins in this process. After bibliographic and database searches we selected five GIP-anchored proteins (Cpm, Ephrin-A4, Gas1, Gfra1 and Rgmb) as potential oocyte candidates participating in fertilisation. Western blot and immunofluorescence analyses showed that only three were present on the mouse ovulated oocyte membrane and, of these, only two were clearly involved in the fertilisation process, namely growth arrest specific 1 (Gas1) and glial cell line-derived neurotrophic factor receptor α1 (Gfrα1). This was demonstrated by evaluating oocyte fertilisability after treatment of oocytes with antibodies against the selected proteins, with their respective short interference RNA or both. Gfrα1 and Gas1 seem to be neither redundant nor synergistic. In conclusion, oocyte Gas1 and Gfrα1 are both clearly involved in fertilisation.//////////////////
Expression regulated by
Comment
Ovarian localization Oocyte, Granulosa
Comment FOund in an ovaultion DNA microarray. Glial cell line-derived neurotrophic factor (GDNF) and its receptors in human ovaries from fetuses, girls, and women. Farhi J et al. OBJECTIVE: To investigate the expression of glial cell line-derived neurotrophic factor (GDNF) and its receptors, GDNF alpha 1 (GFR-alpha1) and tyrosine kinase receptor for rearranged during transfection (RET), in human ovaries at the protein and mRNA levels. DESIGN: Samples were prepared for immunohistochemical staining for GDNF, GFR-alpha1, and RET and in situ hybridization for the mRNA of GFR-alpha1. The mRNA expression of two GDNF isoforms and two RET isoforms was investigated by reverse transcription polymerase chain reaction. SETTING: Infertility unit at a university-affiliated tertiary medical center. PATIENT(S): Fifteen patients who underwent pregnancy terminations at 21-35 gestational weeks and 28 girls/women aged 5-39 years who underwent ovarian laparoscopies. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Laboratory analysis of human ovarian specimens. RESULT(S): The GDNF protein was detected in oocytes of all samples. Granulosa cells (GCs) stained for GDNF in a portion of fetal samples and in all samples from girls/women. The proteins for GFR-alpha1 and RET were detected in both oocytes and GCs with weak staining for the long RET isoform. GFR-alpha1 mRNA transcripts were detected in oocytes and GCs from all samples. The mRNA transcripts for the two GDNF isoforms and the two RET isoforms were detected in all fetal and adult specimens. CONCLUSION(S): The presence of the receptors of GDNF in the GCs of human primordial follicles suggests that GDNF may be involved in the regulation of primordial follicular activation.
Follicle stages
Comment zyxw
Phenotypes
Mutations 0 mutations
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created: July 18, 2006, 11:13 a.m. by: hsueh   email:
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last update: May 3, 2017, 1:08 p.m. by: hsueh    email:



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