Fluorescent-based methods for gene knockdown and functional cardiac imaging in zebrafish.
Fluorescent-based methods for gene knockdown and functional cardiac imaging in zebrafish.
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DOI:
10.1007/s12033-013-9664-6
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发表时间:
2013-10
影响因子:
2.6
通讯作者:
Tanaka, Toshio
中科院分区:
文献类型:
--
作者:
Umemoto, Noriko;Nishimura, Yuhei;Shimada, Yasuhito;Yamanaka, Yukiko;Kishi, Seiya;Ito, Saki;Okamori, Kana;Nakamura, Yuuki;Kuroyanagi, Junya;Zhang, Zi;Zang, Liqing;Wang, Zhipeng;Nishimura, Norihiro;Tanaka, Toshio
关键词:
A notable advantage of zebrafish as a model organism is the ease of gene knockdown using morpholino antisense oligonucleotide (MO). However, zebrafish morphants injected with MO for a target protein often show heterogeneous phenotypes, despite controlling the injection volume of the MO solution in all embryos. We developed a method for estimating the quantity of MO injected into each living morphant, based on the co-injection of a control MO labeled with the fluorophore lissamine. By applying this method for knockdown of cardiac troponin T (tnnt2a) in zebrafish, we could efficiently select the partial tnnt2a-depleted zebrafish with a decreased heart rate and impairment of cardiac contraction. To investigate cardiac impairment of the tnnt2a morphant, we performed fluorescent cardiac imaging using Bodipy-ceramide. Cardiac image analysis showed moderate reduction of tnnt2a impaired diastolic distensibility and decreased contraction and relaxation velocities. To the best of our knowledge, this is the first report to analyze the role of tnnt2a in cardiac function in tnnt2a-depleted living animals. Our combinatorial approach can be applied for analyzing the molecular function of any protein associated with human cardiac diseases. The online version of this article (doi:10.1007/s12033-013-9664-6) contains supplementary material, which is available to authorized users.
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影响因子:
3.7
作者:
Ahmad F;Banerjee SK;Lage ML;Huang XN;Smith SH;Saba S;Rager J;Conner DA;Janczewski AM;Tobita K;Tinney JP;Moskowitz IP;Perez-Atayde AR;Keller BB;Mathier MA;Shroff SG;Seidman CE;Seidman JG
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Seidman JG
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2.7
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通讯作者:
Johnson GL
影响因子:
2.5
作者:
Hsiao, CD;Tsai, WY;Tsai, HJ
通讯作者:
Tsai, HJ