Comparative proteome analysis reveals VPS28 regulates milk fat synthesis through ubiquitylation in bovine mammary epithelial cells

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Biochemistry, Biophysics and Molecular Biology

Main article text

 

Introduction

Materials and Methods

Animals

Cell culture

Knockdown of VPS28 via RNAi in BMECs

Sample preparation

Protein digestion and iTRAQ labeling

Peptide fractionation with strong cation exchange chromatography

Quantitative analysis of proteins by iTRAQ LC-MS/MS

Microscopy analysis

Measurement of cellular TG content and proteasome activities

Real-time quantitative PCR analysis

Statistical Analysis

Results

VPS28 knockdown alters expression of multiple proteins in BMEC

Effect of VPS28 knockdown on morphology of BMECs

Validation of gene expression by RT-qPCR

Discussion

Conclusions

Supplemental Information

Raw data of iTRAQ.

DOI: 10.7717/peerj.9542/supp-1

Additional Information and Declarations

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Lily Liu performed the experiments, analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the paper, and approved the final draft.

Qin Zhang conceived and designed the experiments, analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the paper, and approved the final draft.

Animal Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

Animal ethics committee of Shandong Agriculture University provided full approval for this research (SDAUA-2018-022).

Data Availability

The following information was supplied regarding data availability:

Raw measurements are available as a Supplemental File.

Funding

This work was financially supported by the National Natural Science Foundations of China (31902152), the National Major Development Program of Transgenic Breeding (2014ZX0800953B), the National Natural Science Foundations of China (31201772), the National Science and Technology Programs of China (2013AA102504). The funders had no roles in the study design, data collection and analysis, decision to publish or preparation of the manuscript.

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