Specific residues of RUNX2 are obligatory for formation of BMP2-induced RUNX2-SMAD complex to promote osteoblast differentiation.
Specific residues of RUNX2 are obligatory for formation of BMP2-induced RUNX2-SMAD complex to promote osteoblast differentiation.
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DOI:
10.1159/000151719
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发表时间:
2009
期刊:
影响因子:
--
通讯作者:
Lian JB
中科院分区:
文献类型:
--
作者:
Javed A;Afzal F;Bae JS;Gutierrez S;Zaidi K;Pratap J;van Wijnen AJ;Stein JL;Stein GS;Lian JB
BMP-2 signaling and RUNX2 regulatory pathways converge for transcriptional control of bone formation in vivo. SMAD proteins are recruited to RUNX2 regulatory complex via an overlapping NMTS/SMID sequence (391-432) in Runx2. To establish the contribution of RUNX2-SMAD interaction to osteoblastogenesis, we characterized number of point mutants. Only a triple mutation of amino-acids 426-428 (HTY-AAA) results in loss of RUNX2 interactions with either BMP2 or TGFβ responsive SMADs and failed to integrate the BMP2/TGFβ signal on target gene promoters. In a Runx2 null cell reconstitution assay, the HTY mutant did not activate the program of osteoblast differentiation (ALP, COL-1, OP, BSP, and OC) in response to BMP2 signaling. Thus subnuclear targeting function and formation of a RUNX2-SMAD osteogenic complex are functionally inseparable. Taken together these studies provide direct evidence that RUNX2 is essential for execution and completion of BMP2 signal for osteoblast differentiation.
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DOI:
10.1073/pnas.0611419104
发表时间:
2007-02-27
影响因子:
11.1
作者:
Young, Daniel W.;Hassan, Mohammad Q.;Stein, Gary S.
通讯作者:
Stein, Gary S.
DOI:
10.1073/pnas.0409121102
发表时间:
2005-02-01
影响因子:
11.1
作者:
Javed, A;Barnes, GL;Stein, GS
通讯作者:
Stein, GS
影响因子:
5.6
作者:
Afzal, F;Pratap, J;Javed, A
通讯作者:
Javed, A
影响因子:
4
作者:
Bae, Jong-Sup;Gutierrez, Soraya;Javed, Amjad
通讯作者:
Javed, Amjad
影响因子:
4.8
作者:
Javed, Amjad;Bae, Jong-Sup;Lian, Jane B.
通讯作者:
Lian, Jane B.