Functional analysis of slow myosin heavy chain 1 and myomesin-3 in sarcomere organization in zebrafish embryonic slow muscles.
Functional analysis of slow myosin heavy chain 1 and myomesin-3 in sarcomere organization in zebrafish embryonic slow muscles.
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DOI:
10.1016/j.jgg.2012.01.005
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发表时间:
2012-02
影响因子:
5.9
通讯作者:
Du, Shao Jun
中科院分区:
文献类型:
--
作者:
Xu, Jin;Gao, Jie;Li, Junling;Xue, Liangyi;Clark, Karl J.;Ekker, Stephen C.;Du, Shao Jun
Myofibrillogenesis, the process of sarcomere formation, requires close interactions of sarcomeric proteins and various components of sarcomere structures. The myosin thick filaments and M-lines are two key components of the sarcomere. It has been suggested that myomesin proteins of M-lines interact with myosin and titin proteins and keep the thick and titin filaments in order. However, the function of myomesin in myofibrillogenesis and sarcomere organization remained largely enigmatic. No knockout or knockdown animal models have been reported to elucidate the role of myomesin in sarcomere organization in vivo. In this study, by using the gene-specific knockdown approach in zebrafish embryos, we carried out a loss-of-function analysis of myomesin-3 and slow myosin heavy chain 1 (smyhc1) expressed specifically in slow muscles. We demonstrated that knockdown of smyhc1 abolished the sarcomeric localization of myomesin-3 in slow muscles. In contrast, loss of myomesin-3 had no effect on the sarcomeric organization of thick and thin filaments as well as M- and Z-line structures. Together, these studies indicate that myosin thick filaments are required for M-line organization and M-line localization of myomesin-3. In contrast, myomesin-3 is dispensable for sarcomere organization in slow muscles.
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影响因子:
3.7
作者:
Codina M;Li J;Gutiérrez J;Kao JP;Du SJ
通讯作者:
Du SJ
DOI:
10.1073/pnas.0707330105
发表时间:
2008-01-15
影响因子:
11.1
作者:
Du, Shao Jun;Li, Huiqing;Zhong, Yongwang
通讯作者:
Zhong, Yongwang
影响因子:
5.6
作者:
Lange, S;Himmel, M;Ehler, E
通讯作者:
Ehler, E
影响因子:
3.7
作者:
Li H;Xu J;Bian YH;Rotllant P;Shen T;Chu W;Zhang J;Schneider M;Du SJ
通讯作者:
Du SJ
影响因子:
4.8
作者:
Gotthardt, M;Hammer, RE;Herz, J
通讯作者:
Herz, J