NF-kappaB-YY1-miR-29 regulatory circuitry in skeletal myogenesis and rhabdomyosarcoma.
NF-kappaB-YY1-miR-29 regulatory circuitry in skeletal myogenesis and rhabdomyosarcoma.
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DOI:
10.1016/j.ccr.2008.10.006
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发表时间:
2008-11-04
期刊:
影响因子:
50.3
通讯作者:
Guttridge DC
中科院分区:
文献类型:
--
作者:
Wang H;Garzon R;Sun H;Ladner KJ;Singh R;Dahlman J;Cheng A;Hall BM;Qualman SJ;Chandler DS;Croce CM;Guttridge DC
Studies support the importance of microRNAs in physiological and pathological processes. Here we describe the regulation and function of miR-29 in myogenesis and Rhabdomyosarcoma (RMS). Results demonstrate that in myoblasts miR-29 is repressed by NF-κB acting through YY1 and the Polycomb. During myogenesis, NF-κB and YY1 downregulation causes derepression of miR-29, which in turn accelerates differentiation by targeting its repressor YY1. However, in RMS cells and primary tumors that possess impaired differentiation, miR-29 is epigenetically silenced by an activated NF-κB-YY1 pathway. Reconstitution of miR-29 in RMS in mice inhibits tumor growth and stimulates differentiation, suggesting that miR-29 acts as a tumor suppressor through its pro-myogenic function. Together, results identify a NF-κB–YY1–miR-29 regulatory circuit whose disruption may contribute to RMS. MicroRNAs regulate skeletal myogenesis, but their impact in muscle diseases is not well understood. Here we describe miR-29 as an enhancer of myogenic differentiation and a suppressor of RMS. We find that miR-29 exists in a regulatory circuit involving NF-κB and YY1. In myoblasts NF-B acts through YY1 to epigenetically suppress miR-29, while during differentiation miR-29 is induced to facilitate myogenesis by a negative feedback on YY1. Significantly, RMS tumors lose miR-29 due to an elevation in NF-B and YY1, and readjustment of miR-29 levels in RMS stimulates differentiation. Thus, myogenesis is dependent on NF-κB–YY1–miR-29 circuitry whose dysfunction may contribute to RMS pathogenesis. Such findings offer potential avenues for the diagnosis and treatment of muscle relevant cancers.
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DOI:
10.1083/jcb.200603008
发表时间:
2006-08-28
期刊:
The Journal of cell biology
影响因子:
--
作者:
Kim HK;Lee YS;Sivaprasad U;Malhotra A;Dutta A
通讯作者:
Dutta A
影响因子:
5.3
作者:
Hertlein, E;Wang, JX;Guttridge, DC
通讯作者:
Guttridge, DC
影响因子:
30.8
作者:
Krek, A;Grun, D;Rajewsky, N
通讯作者:
Rajewsky, N
影响因子:
30.8
作者:
Chen, JF;Mandel, EM;Wang, DZ
通讯作者:
Wang, DZ
影响因子:
30.8
作者:
Chang, Tsung-Cheng;Yu, Duonan;Mendell, Joshua T.
通讯作者:
Mendell, Joshua T.