湖羊TGF-β1基因特征、表达及其与排卵数的相关性分析 |
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引用本文: | 郭晶,李新宇,李隐侠,潘增祥,决肯,刘吉英,李二林,谢庄,陈玲,李齐发. 湖羊TGF-β1基因特征、表达及其与排卵数的相关性分析[J]. 中国农业科学, 2013, 46(21): 4586-4593. DOI: 10.3864/j.issn.0578-1752.2013.21.022 |
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作者姓名: | 郭晶 李新宇 李隐侠 潘增祥 决肯 刘吉英 李二林 谢庄 陈玲 李齐发 |
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基金项目: | 国家自然科学基金(30671503)、江苏省自然科学基金(BK2007156)、国家重点基础研究发展计划(2007CB947403) |
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摘 要: | 【目的】获取湖羊TGF-β1基因序列,了解TGF-β1序列特征和组织表达特征,分析卵巢组织中TGF-β1基因表达水平与排卵数之间的关系。【方法】通过PCR扩增和测序获得湖羊TGF-β1基因序列,并采用生物信息学方法分析其序列特征;采用RT-PCR分析湖羊TGF-β1基因的组织表达特征;采用Real-time qPCR方法分析多羔组与单羔组湖羊卵巢组织TGF-β1基因表达水平的差异,及其与排卵数之间的关系。【结果】湖羊TGF-β1基因编码区序列全长1 173 bp,编码蛋白含有390个氨基酸残基,包含典型的TGF-β前肽和TGF-β like等结构域。TGF-β1基因在湖羊卵巢组织中高表达,多羔组卵巢组织中TGF-β1基因表达水平显著高于单羔组(P<0.05),且表达水平与排卵数呈极显著正相关(P<0.01)。【结论】多羔组湖羊卵巢组织TGF-β1基因表达水平显著高于单羔组,且与排卵数间呈极显著正相关,推测TGF-β1基因在湖羊卵泡发育、成熟或排卵过程中发挥重要作用,是影响湖羊高繁殖力的候选基因。
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关 键 词: | 湖羊 TGF-&beta 1基因 产羔数 排卵数 |
收稿时间: | 2013-04-25 |
Characterization,Expression of TGF-β1 Gene and Its Association with Ovulation Rate in Hu Sheep |
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Affiliation: | 1.College of Animal Science and Technology, Nanjing Agriculture University, Nanjing 210095;2.Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014;3.College of Animal Science, Xinjiang Agricultural University, Urumqi 830052;4.Suzhou Breeding Sheep Farm of Jiangsu Province, Suzhou 215200, Jiangsu |
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Abstract: | 【Objective】 The present study was performed to clone the TGF-β1 sequence in Hu sheep and to comprehend the sequence character of Hu sheep so as to investigate the relationships between the mRNA level of TGF-β1 gene and ovulation number in ovaries of Hu sheep. 【Method】The sequence of TGF-β1 in Hu sheep was cloned and sequenced, and the sequence was analyzed by bioinformatics. The tissue distributions of TGF-β1 were detected by RT-PCR, and the gene expression level differences in the ovaries between the high- and the low-fecundity groups and the relationships with the ovulation rate were detected by real-time qPCR.【Result】The length of TGF-β1 gene coding sequence was 1 173 bp, encoding 390 amino acids which include some typical domains such as TGF-β propeptide and TGF-β like. RT-PCR assays revealed that TGF-β1 highly expressed in the ovary tissue. The ovarian mRNA expression level of TGF-β1 in high-fecundity group was significantly greater than that in low-fecundity group (P<0.05), and mRNA expression level was significantly positively correlated with ovulation rate (P<0.01). 【Conclusion】The ovarian mRNA expression level of TGF-β1 in high-fecundity group was significantly greater than that in low-fecundity group and significantly positively correlated with ovulation rate. These findings indicate that TGF-β1 of Hu sheep play an important role in follicular development, maturation or ovulation, which probably is associated with high fecundity of Hu sheep. |
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Keywords: | Hu sheep TGF-&beta 1 gene litter size ovulation rate |
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