Abstract:
:In a previous genome-wide association study on milk production traits in Chinese Holstein population, we revealed VPS28 gene was highly expressed in mammary gland tissue and a -58C > T mutation in 5'-UTR of it was significantly associated with milk fat content traits. In this study, we explored the effect of this -58C > T mutation on VPS28, and found it could significantly decrease promoter activity of VPS28 by reducing transcription factor binding sites. To identify the potential functional SNP involved, we performed RNAi experiment in BMECs, the results showed that VPS28 knockdown could increase the expression of ADFP and CD36, lead accumulation of ubiquitinated proteins, long chain fatty acids and triglyceride, and decrease the proteasome activity. Therefore, our study demonstrates that the -58C > T mutation could facilitate milk fat synthesis in two ways. The one is involved in ESCRTs signaling, it could directly lead an accumulation of ubqiuitinated membrane proteins to promote the long chain fatty acids uptake to incorporation into TG. The other is involved in ubiquitination-proteasome system, it could indirectly lead a dysfunction of proteasome to accumulate the ubqiuitinated proteins to promote TG synthesis. In conclusion, our study demonstrates that VPS28 could be a strong candidate gene for milk fat content traits, and in particular, the -58C > T mutation in 5'-UTR of VPS28 could be a functional mutation for its effects on milk fat content.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Liu L,Zhang Qdoi
10.1016/j.bbrc.2019.01.016subject
Has Abstractpub_date
2019-03-19 00:00:00pages
606-613issue
4eissn
0006-291Xissn
1090-2104pii
S0006-291X(19)30022-1journal_volume
510pub_type
杂志文章abstract::Hypoxic/ischemic trauma is a primary factor in the pathology of various disease states. Yet, very little is known about the molecular mechanisms involved in cellular responses and adaptations to hypoxia. As a means of identifying intracellular signaling systems that are regulated in response to hypoxia, the effects of...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1997.7907
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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doi:10.1016/j.bbrc.2006.06.075
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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doi:10.1006/bbrc.2001.4780
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journal_title:Biochemical and biophysical research communications
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更新日期:2007-06-22 00:00:00
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journal_title:Biochemical and biophysical research communications
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doi:10.1006/bbrc.1998.9773
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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更新日期:1984-12-14 00:00:00