畜牧兽医学报 ›› 2021, Vol. 52 ›› Issue (5): 1238-1246.doi: 10.11843/j.issn.0366-6964.2021.05.010

• 遗传育种 • 上一篇    下一篇

基于iTRAQ技术挖掘猪肾组织高原低氧适应性关键蛋白

李梦柔, 韦明邦, 张健, 邢璐, 徐士军, 肖青青, 叶幼荣, 董世雄, 段梦琪, 商鹏*   

  1. 西藏农牧学院动物科学学院, 林芝 860000
  • 收稿日期:2020-10-20 出版日期:2021-05-23 发布日期:2021-05-22
  • 通讯作者: 商鹏,主要从事高原动物遗传资源保护与功能基因组研究,E-mail:nemoshpmh@126.com
  • 作者简介:李梦柔(1994-),女,山东德州人,硕士生,主要从事高原动物疫病防控技术的研究,E-mail:xznmlmr@126.com;韦明邦(1997-),女,重庆人,硕士生,主要从事高原畜禽遗传资源保护与利用的研究,E-mail:Bangbangbang@163.com。
  • 基金资助:
    中央引导地方项目(YDZX20195400004426);中央支持地方高校改革发展资金项目(2018XZ503118003);中央财政支持地方高校发展专项资金项目(ZZXT2019-02)

Mining Key Proteins of High Altitude Hypoxic Adaptability in Porcine Kidney Tissue Based on iTRAQ Technology

LI Mengrou, WEI Mingbang, ZHANG Jian, XING Lu, XU Shijun, XIAO Qingqing, YE Yourong, DONG Shixiong, DUAN Mengqi, SHANG Peng*   

  1. Animal Science College, Tibet Agricultural and Animal Husbandry University, Linzhi 860000, China
  • Received:2020-10-20 Online:2021-05-23 Published:2021-05-22

摘要: 旨在探究高原低氧环境下藏猪与大约克猪肾组织中低氧适应的差异表达蛋白(differentially expressed protein,DEPs)。本试验选择藏猪与大约克猪两个品种无亲缘关系的去势公猪,饲养于海拔3 000 m的高原,按自由采食方式饲养至180日龄,每个品种随机选择生长情况相近的 9头猪采集肾组织。利用同位素标记相对和绝对定量(isobaric tags for relative and absolute quantification,iTRAQ)技术对藏猪和大约克猪肾组织中蛋白差异表达情况进行分析,并对差异表达蛋白进行GO(Gene Ontology)功能注释及KEGG通路分析。结果发现,在两猪种肾脏组织中共获得4 370个蛋白质,以FC>1.2或<0.833,P<0.05为筛选条件共筛选出181个DEPs,其中在藏猪中上调的蛋白质有138个,下调的有43个。这些DEPs主要功能富集在HIF-1信号通路、PPAR信号通路、补体和凝血级联信号通路、氧化还原酶活性、碳代谢、血压调节、线粒体等与低氧适应相关的条目和通路上,进一步综合分析后共筛选出5个与低氧适应相关的重要DEPs(CD59、A2M、eNOS、CDKN1B和PGK1)。这些DEPs分别在维持血液动力学、调节能量代谢与生理环境稳态等方面的调节中起到重要作用,为进一步研究猪的高原低氧适应性提供一定理论依据。

关键词: iTRAQ, 猪, 肾, 低氧适应性

Abstract: The aim of this study was to explore the differentially expressed proteins(DEPs) of hypoxic adaptation in kidney tissues of Tibetan pigs and Yorkshire pigs under high altitude hypoxic environment. Unrelated castrated boars from Tibetan pig and Yorkshire pig were selected as experimental animals, and fed ad libitum on the plateau with altitude of 3 000 m, up to 180-day-old, 9 pigs with similar growth and body condition were randomly selected from each breed to collect kidney tissue. In this study, isobaric tags for relative and absolute quantification(iTARQ) technique was used to analyze the difference of protein expression in kidney tissues between Tibetan pigs and Yorkshire pigs, the differentially expressed proteins were analyzed by GO functional annotation and KEGG pathway. The results showed that, a total of 4 370 proteins were obtained from kidney tissues of two pig breeds, FC>1.2 or <0.833 and P<0.05 as the criterion, a total of 181 DEPs were screened out, among them, 138 proteins were up-regulated and 43 proteins were down-regulated in the Tibetan pigs. In the functional analysis, DEPs were mainly enriched in items and pathways related to hypoxic adaptation, such as HIF-1 signaling pathway, PPAR signaling pathway, complement and coagulation cascades signaling pathway, oxidoreductase activity, carbon metabolism, regulation of blood pressure, mitochondria, etc., after further comprehensive analysis, 5 important DEPs related to hypoxic adaptation were screened out(CD59, A2M, eNOS, CDKN1B and PGK1). These DEPs play an important role in maintaining hemodynamics, regulating energy metabolism and physiological environment homeostasis, the result of this study provides a theoretical basis for further study on the adaptability of pigs to hypoxic at high altitude.

Key words: iTRAQ, pig, kidney, hypoxic adaptation

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