Ghrelin uses the GHS-R1a/Gi/cAMP pathway and induces differentiation only in mature osteoblasts. This ghrelin pathway is impaired in AIS patients

Autor: Ronan Barre, Nicolas Beton, Aurélie Batut, Frank Accabled, Jerome Sales de Gauzy, Françoise Auriol, Sanaa Eddiry, Maithe Tauber, Sara Laurencin, Jean Pierre Salles, Isabelle Gennero
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Biochemistry and Biophysics Reports, Vol 24, Iss , Pp 100782- (2020)
Druh dokumentu: article
ISSN: 2405-5808
DOI: 10.1016/j.bbrep.2020.100782
Popis: We have examined the Acylated Ghrelin (AG)/Gi pathway in different human osteoblastic cell lines. We have found that: 1) AG induces differentiation/mineralization only in mature osteoblasts; 2) the expression of GHS-R1a increases up to the mature cell stage, 3) the action is mediated via the GHS-R/Gi/cAMP pathway only in mature osteoblasts, and 4) osteoblastic cells from adolescent idiopathic scoliosis (AIS) are resistant to the AG/Gi/cAMP pathway. Altogether, these results suggested that AG uses the GHS-R1a/Gi/cAMP pathway to induce differentiation in mature osteoblasts only. This pathway is impaired in AIS osteoblasts. Understanding AG-specific pathways involved in normal and pathological osteoblasts may be useful for developing new treatments for pathologies such as AIS or osteoporosis.
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