Abstract:
:We recently demonstrated the activation of extracellular signal- regulated protein kinase 1 and 2 (ERK1 and ERK2) by IGF-1, FGF-2, and PDGF-BB in normal human osteoblastic (HOB) cells as well as in rat and mouse osteoblastic cells. In this report, we have examined whether c-Jun NH2-Terminal Kinase (JNK) pathway is activated by growth factors and interleukin-1 beta (IL-1 beta) in normal HOB and rat UMR-106 cells using immune-complex kinase assay and anti-active JNK antibody, which recognizes activated forms of both JNK1 and JNK2. Results have demonstrated the presence of JNK1 and JNK2 proteins in normal HOB and UMR-106 cells. Both JNK1 and JNK2 were activated by IL-1 beta. IL-1 beta preferentially activated JNK pathway in a dose- and time-dependent manner and had little effect on ERK pathway. On the other hand, FGF-2 did not activate JNK but most strongly activated ERK pathway. The activation of JNK was maximal at 20 min whereas maximal activation of ERK1 and ERK2 was observed within 10 min. Results have clearly demonstrated that IL-1 beta preferentially activates JNK pathway whereas FGF-2 activates ERK pathway in normal human and rat UMR-106 osteoblastic cells.
journal_name
J Cell Biochemjournal_title
Journal of cellular biochemistryauthors
Chaudhary LR,Avioli LVsubject
Has Abstractpub_date
1998-04-01 00:00:00pages
87-93issue
1eissn
0730-2312issn
1097-4644pii
10.1002/(SICI)1097-4644(19980401)69:1<87::AID-JCB1journal_volume
69pub_type
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journal_title:Journal of cellular biochemistry
pub_type: 杂志文章
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journal_title:Journal of cellular biochemistry
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journal_title:Journal of cellular biochemistry
pub_type: 杂志文章
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更新日期:2017-09-01 00:00:00
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journal_title:Journal of cellular biochemistry
pub_type: 杂志文章
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journal_title:Journal of cellular biochemistry
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journal_title:Journal of cellular biochemistry
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journal_title:Journal of cellular biochemistry
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更新日期:2014-10-01 00:00:00
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journal_title:Journal of cellular biochemistry
pub_type: 杂志文章
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更新日期:2006-04-01 00:00:00
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pub_type: 杂志文章
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更新日期:2019-09-01 00:00:00