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题名: Hyperplasia and Cellularity Changes in IGF-1-Overexpressing Skeletal Muscle of Crucian Carp
作者: Li, Dongliang1, 2; Lou, Qiyong1; Zhai, Gang1, 2; Peng, Xuyan1, 2; Cheng, Xiaoxia1, 2; Dai, Xiangyan1, 2; Zhuo, Zijian1, 2; Shang, Guohui1, 2; Jin, Xia1; Chen, Xiaowen1; Han, Dong1; He, Jiangyan1; Yin, Zhan1
关键词: GROWTH-FACTOR-I ; RAINBOW-TROUT ; IGF-I ; CELL DIFFERENTIATION ; TRANSGENIC ZEBRAFISH ; ATLANTIC SALMON ; FISH-MEAL ; INSULIN ; EXPRESSION ; METABOLISM
刊名: ENDOCRINOLOGY
发表日期: 2014-06-01
DOI: 10.1210/en.2013-1938
卷: 155, 期:6, 页:2199-2212
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Endocrinology & Metabolism
研究领域[WOS]: Endocrinology & Metabolism
英文摘要: The zebrafish skeletal muscle-specific promoter mylz2 was used to cause crucian carp overexpression of the zebrafish IGF-1 cDNA. In stable transgenic germline F-1 progenies, a 5-fold increase in the level of IGF-1 in skeletal muscle was observed. Evident skeletal muscle hyperplasia was observed in the transgenic fish through histologic analysis. By analyzing the RNA sequencing transcriptome of the skeletal muscle of IGF-1 transgenic fish and nontransgenic control fish at 15 months of age, 10 966 transcripts with significant expression levels were identified with definite gene descriptions based on the corresponding zebrafish genome information. Based on the results of our RNA sequencing transcriptome profiling analysis and the results of the real-time quantitative PCR analysis performed to confirm the skeletal muscle transcriptomics analysis, several pathways, including IGF-1 signaling, aerobic metabolism, and protein degradation, were found to be activated in the IGF-1-overexpressing transgenic fish. Intriguingly, our transcriptional expression and protein assays indicated that the overexpression of IGF-1 stimulated a significant shift in the myofiber type toward a more oxidative slow muscle type. Although the body weight was surprisingly decreased by IGF-1 transgenic expression, significantly higher oxygen consumption rates were measured in IGF-1-overexpressing transgenic fish compared with their nontransgenic control fish. These results indicate that the sustained overexpression of IGF-1 in crucian carp skeletal muscle promotes myofiber hyperplasia and cellularity changes, which elicit alterations in the body energy metabolism and skeletal muscle growth.
关键词[WOS]: GROWTH-FACTOR-I ; RAINBOW-TROUT ; IGF-I ; CELL DIFFERENTIATION ; TRANSGENIC ZEBRAFISH ; ATLANTIC SALMON ; FISH-MEAL ; INSULIN ; EXPRESSION ; METABOLISM
语种: 英语
WOS记录号: WOS:000342342900015
ISSN号: 0013-7227
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20388
Appears in Collections:水生生物分子与细胞生物学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China

Recommended Citation:
Li, Dongliang; Lou, Qiyong; Zhai, Gang; Peng, Xuyan; Cheng, Xiaoxia; Dai, Xiangyan; Zhuo, Zijian; Shang, Guohui; Jin, Xia; Chen, Xiaowen; Han, Dong; He, Jiangyan; Yin, Zhan.Hyperplasia and Cellularity Changes in IGF-1-Overexpressing Skeletal Muscle of Crucian Carp,ENDOCRINOLOGY,2014,():
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