畜牧兽医学报 ›› 2010, Vol. 41 ›› Issue (11): 1379-1386.doi:

• 遗传繁育 • 上一篇    下一篇

猪精氨酸-丝氨酸蛋白激酶1(SRPK1)克隆表达及功能初步分析

俄广鑫1,刘娣2*,张冬杰2,杨秀琴1,崔羽3,祝继原1,杨少成1,王嘉博1,谢宇彤1   

  1. 1. 东北农业大学动物科学技术学院,哈尔滨 150030;2. 黑龙江省农业科学院畜牧中心,哈尔滨 150086;3. 海南大学农学院,海口 570228
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-11-25 发布日期:2010-11-25
  • 通讯作者: 刘娣

Cloning and Functional Analysis of Serine/arginine-rich Specific Kinase 1 in Pig

E Guang-xin1, LIU Di 2*, ZHANG Dong-jie2,YANG Xiu-qin1, CUI Yu 3, ZHU Ji-yuan1, YANG Shao-cheng1, WANG Jia-bo1, XIE Yu-tong1   

  1. 1. College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China;2. Animal Husbandry Center, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China;3. Hainan University of Agriculture, Haikou 570228, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-11-25 Published:2010-11-25

摘要: 本研究旨在阐明猪SRPK1基因的分子特点和表达谱。以大白猪为研究对象,利用 RT-PCR 技术克隆SRPK1 基因 CDS 区域,同时利用反向 PCR(inverse PCR,I-PCR) 技术得到猪部分 SRPK1 的5′UTR序列;利用生物信息学方法分析 SRPK1基因核苷酸序列及编码蛋白序列的结构特点;利用荧光定量 PCR(realtime PCR) 检测SRPK1在1和30日龄大白猪及杜洛克的心脏、肌肉、脾脏、肝脏、肾脏、肺脏、胃、小肠、大肠、脑的表达情况;构建猪骨骼肌损伤模型,研究在骨骼肌发育过程中SRPK1基因的表达特性。结果,将克隆片段拼接得到长2 499 bp 的大白猪 SRPK1 基因序列,包含了1 968 bp完整 CDS区域,分析表明其编码含656个氨基酸的蛋白质;包括2个P_Kc 结构域,猪SRPK1蛋白序列与人和黑猩猩的相似性较高。通过生物信息学方法预测所得 5′UTR 含有多个转录结合位点:HSF1、HSF2、Ik-1、IK-2、SRY、SP1 MyoD、USF、E47、p300、CP2、RREB-1、E2F和AP-1。利用荧光定量PCR研究发现,表达结果显示猪该基因表达具有组织和种间特异性,主要都是在胃、大肠和小肠中表达。SRPK1基因在整个损伤修复过程中的表达反复出现升高和降低。5′UTR处有多个和肌肉生长相关蛋白的转录结合位点,主要在消化系统组织表达,在骨骼肌修复中表达上调,推测其可能与骨骼肌细胞发育或其他肌肉生长相关因子的表达有关。

Abstract: The objective of this study was to illuminate the molecular features and the expression profile of the porcine SRPK1 gene. The SRPK1 gene from the Yorkshire pig was cloned and sequenced, and then its molecular features were analyzed. Use inverse PCR to clone the partial 5′UTR sequence of SRPK1 in pig. The mRNA distribution profile of the porcine SRPK1 gene in ten tissues (heart, muscles, liver, kidney, lung, stomach, small and large intestine, spleen, brain) of Yorkshire and Duroc (one-day, one-month) were examined by real-time PCR. Construct pig skeletal muscle injury model by subcutaneous injection to study the expression characteristics of SRPK1 gene in repair process of skeletal muscle. A sequence with a length of 2 499 bp was cloned, it contained the CDS (coding sequence) region of 1 968 bp of the porcine SRPK1 gene, encoded a protein composed of 656 amino acids, including two P_Kc domains. The sequence of the porcine SRPK1 protein shared high similarity with human and chimpanzee, and they were closed in the Phylogenetic tree. The result of bioinformatics analysis showed that 5′UTR obtained in the study contained multiple transcription binding sites:HSF1, HSF2, Ik-1, IK-2, SRY, SP1 MyoD, USF, E47, p300, CP2, RREB-1, E2F and AP-1. The study results showed that, by realtime PCR, pigs had the organization- and species-specific in expression, but highly in stomach, small intestine and large intestine. The expression of SRPK1 gene fluctuated in the injury and repair process. There are several transcription binding sites in 5′UTR related to muscle development, it mainly expressed in digestive system and the expression level increased in injury and repair process of skeletal muscle. It was inferred that SRPK1 gene may be related to skeletal muscle cell development, or other growth-related factor expression.