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DOI: https://doi.org/10.5713/ab.20.0751    [Accepted] Published online February 15, 2021.
Combined transcriptome and proteome analyses reveal differences in the longissimus dorsi muscle between Kazakh cattle and Xinjiang brown cattle
XiangMin Yan1  , Jia Wang2  , Hongbo Li1  , Liang Gao3  , Juan Geng4  , Zhen Ma1  , Jianming Liu5  , Jinshan Zhang1  , Penggui Xie3  , Lei Chen6,* 
1Institute of Animal Husbandry, Xinjiang Academy of Animal Husbandry, Urumqi, 830057, China
2College of Geographic Science, Shanxi Normal University, Linfen, 041000, China
3Yili Vocational and Technical College, Yili, 835000, China
4Xinjiang Animal Husbandry General Station, Urumqi, 830057, China
5Yili Animal Husbandry General Station, Yili, 835000, China
6College of Animal Science and Technology, Shihezi University, Shihezi, 832000, China
Correspondence:  Lei Chen, Tel: 18999879977, Fax: 0993-2058839, Email: chenlei0991@126.com
Received: 31 October 2020   • Revised: 19 November 2020   • Accepted: 29 January 2021
With the rapid development of proteomics sequencing and RNA sequencing technology, multi-omics analysis has become a current research hotspot. Our previous study indicated that Xinjiang brown cattle have better meat quality than Kazakh cattle. In this study, Xinjiang brown cattle and Kazakh cattle were used as the research objects.
Proteome sequencing and RNA sequencing technology were used to analyze the proteome and transcriptome of the longissimus dorsi muscle of the two breeds of adult steers (n=3).
In this project, 22677 transcripts and 1874 proteins were identified through quantitative analysis of the transcriptome and proteome. By comparing the identified transcriptome and proteome, we found that 1737 genes were identified at both the transcriptome and proteome levels. The results of the study revealed 12 differentially expressed genes and proteins: TNNI1, CRYAB, CSRP3, PTER, MYBPH, GSTM3, MYL3, NID2, DPYSL2, GOT1, REEP5 and ASPA. We performed functional enrichment of these differentially expressed genes and proteins. The KEGG results showed that these differentially expressed genes and proteins are enriched in the fatty acid degradation and histidine metabolism signaling pathways. We performed PRM verification of the differentially expressed proteins, and the PRM results were consistent with the sequencing results.
Our study provided and identified the differentially expressed genes and proteins. In addition, identifying functional genes and proteins with important breeding value will provide genetic resources and technical support for the breeding and industrialization of new genetically modified beef cattle breeds.
Keywords: Transcriptome; Proteomic; Longissimus Muscle; Kazakh Cattle; Xinjiang Brown Cattle

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