Donkey milk(DM)has attracted immense attention owing to its resemblance to human milk.Consequently,its components require rigorous analysis.This study aimed to identify DM serum proteins(DMSPs)using a label-free MS-ba...Donkey milk(DM)has attracted immense attention owing to its resemblance to human milk.Consequently,its components require rigorous analysis.This study aimed to identify DM serum proteins(DMSPs)using a label-free MS-based proteomics method.Herein,1243 DMSPs were characterized in Dezhou DM,and 788 common DMSPs were identified and subsequently analyzed.Gene ontology analysis indicated the involvement of these proteins in cellular components(extracellular exosomes,extracellular space,and focal adhesion),biological processes(small guanosine triphosphatase(GTPase)-mediated signal transduction,translation,and intracellular protein transport),and molecular functions(calcium ion binding,GTP binding,and poly(A)RNA binding).Additionally,metabolic pathway analysis confirmed that protein processing in endoplasmic reticulum is the most related metabolic pathway,followed by those of ribosomes,phagosomes,endocytosis,complement,and coagulation cascades.This study,aimed at decoding the DM composition,advances our understanding of the potential biological functions of DMSPs.展开更多
Donkey milk has a variety of physiological functions, including antibacterial and anti-inflammatory. Donkey whey proteins(DWPs), as the main functional component in donkey milk, its inhibitory effect on colitis is sti...Donkey milk has a variety of physiological functions, including antibacterial and anti-inflammatory. Donkey whey proteins(DWPs), as the main functional component in donkey milk, its inhibitory effect on colitis is still unclear. In this study, the inhibitory effect and potential mechanism of DWPs on dextran sulfate sodium(DSS)-induced colitis were investigated. Firstly, the DWPs and bovine milk whey proteins(BWPs)were characterized using proteomics. Then, we administered DWPs and BWPs to mice with colitis via oral gavage. The results of immunohistochemistry and flow cytometry indicated that DWPs increased T regulatory cell accumulation and increased the abundance of the cluster of differentiation 205+(CD205+)macrophages compared to those with BWPs and in model groups. In addition, DWPs exhibited a more remarkable ability to inhibit pro-inflammatory proteins(S100A8, TRAF6, and NF-κB)expression and inflammatory secretion than BWPs. In addition, DWPs significantly decreased NF-κB and CD86 levels more than BWPs or the negative control in both LPS-stimulated human peripheral blood mononuclear cells or cell lines. These findings indicate that DWPs comprise a promising anti-colitis functional food, and this work has established a foundation for future research on these compounds.展开更多
基金This study was supported by The“Thirteenth Five Year”National Science and Technology Plan Project of China(2018YFC1603703 and 2018YFC1604302)National Natural Science Foundation of China(2013BAD18B03)+1 种基金China Scholarship Council(202008210391),Shenyang Technological Innovation Project(Y17-0-028),LiaoNing Revitalization Talents Project(XLYC1902083)Postgraduate Innovation and Cultivation Project of Shenyang Agricultural University(2021YCXB04).
文摘Donkey milk(DM)has attracted immense attention owing to its resemblance to human milk.Consequently,its components require rigorous analysis.This study aimed to identify DM serum proteins(DMSPs)using a label-free MS-based proteomics method.Herein,1243 DMSPs were characterized in Dezhou DM,and 788 common DMSPs were identified and subsequently analyzed.Gene ontology analysis indicated the involvement of these proteins in cellular components(extracellular exosomes,extracellular space,and focal adhesion),biological processes(small guanosine triphosphatase(GTPase)-mediated signal transduction,translation,and intracellular protein transport),and molecular functions(calcium ion binding,GTP binding,and poly(A)RNA binding).Additionally,metabolic pathway analysis confirmed that protein processing in endoplasmic reticulum is the most related metabolic pathway,followed by those of ribosomes,phagosomes,endocytosis,complement,and coagulation cascades.This study,aimed at decoding the DM composition,advances our understanding of the potential biological functions of DMSPs.
基金supported by The National Key R & D Program of China (2018YFC1604302)The 12th Five-Year National Science and Technology Plan Project of China (2013BAD18B03)+3 种基金Chinese Scholarship Council (202008210391)Shenyang Technological Innovation Project (Y17-0-028)Liao Ning Revitalization Talents Project (XLYC1902083)Postgraduate Innovation and Cultivation Project of Shenyang Agricultural University (2021YCXB04)。
文摘Donkey milk has a variety of physiological functions, including antibacterial and anti-inflammatory. Donkey whey proteins(DWPs), as the main functional component in donkey milk, its inhibitory effect on colitis is still unclear. In this study, the inhibitory effect and potential mechanism of DWPs on dextran sulfate sodium(DSS)-induced colitis were investigated. Firstly, the DWPs and bovine milk whey proteins(BWPs)were characterized using proteomics. Then, we administered DWPs and BWPs to mice with colitis via oral gavage. The results of immunohistochemistry and flow cytometry indicated that DWPs increased T regulatory cell accumulation and increased the abundance of the cluster of differentiation 205+(CD205+)macrophages compared to those with BWPs and in model groups. In addition, DWPs exhibited a more remarkable ability to inhibit pro-inflammatory proteins(S100A8, TRAF6, and NF-κB)expression and inflammatory secretion than BWPs. In addition, DWPs significantly decreased NF-κB and CD86 levels more than BWPs or the negative control in both LPS-stimulated human peripheral blood mononuclear cells or cell lines. These findings indicate that DWPs comprise a promising anti-colitis functional food, and this work has established a foundation for future research on these compounds.
