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Type: Artigo de periódico
Title: Profiling The Changes In Signaling Pathways In Ascorbic Acid/β-glycerophosphate-induced Osteoblastic Differentiation.
Author: Chaves Neto, Antonio Hernandes
Queiroz, Karla Cristiana
Milani, Renato
Paredes-Gamero, Edgar Julian
Justo, Giselle Zenker
Peppelenbosch, Maikel P
Ferreira, Carmen Veríssima
Abstract: Despite numerous reports on the ability of ascorbic acid and β-glycerophosphate (AA/β-GP) to induce osteoblast differentiation, little is known about the molecular mechanisms involved in this phenomenon. In this work, we used a peptide array containing specific consensus sequences (potential substrates) for protein kinases and traditional biochemical techniques to examine the signaling pathways modulated during AA/β-GP-induced osteoblast differentiation. The kinomic profile obtained after 7 days of treatment with AA/β-GP identified 18 kinase substrates with significantly enhanced or reduced phosphorylation. Peptide substrates for Akt, PI3K, PKC, BCR, ABL, PRKG1, PAK1, PAK2, ERK1, ERBB2, and SYK showed a considerable reduction in phosphorylation, whereas enhanced phosphorylation was observed in substrates for CHKB, CHKA, PKA, FAK, ATM, PKA, and VEGFR-1. These findings confirm the potential usefulness of peptide microarrays for identifying kinases known to be involved in bone development in vivo and in vitro and show that this technique can be used to investigate kinases whose function in osteoblastic differentiation is poorly understood.
Subject: Animals
Ascorbic Acid
Cell Differentiation
Cells, Cultured
Signal Transduction
Citation: Journal Of Cellular Biochemistry. v. 112, n. 1, p. 71-7, 2011-Jan.
Rights: fechado
Identifier DOI: 10.1002/jcb.22763
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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