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Li J, Shang X, Zhang S, Yang Q, Yan Z, Wang P, Gao X, Gun S, Huang X. Breed-Related Differential microRNA Expression and Analysis of Colostrum and Mature Milk Exosomes in Bamei and Landrace Pigs. Int J Mol Sci 2024; 25:667. [PMID: 38203844 PMCID: PMC10779168 DOI: 10.3390/ijms25010667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 12/26/2023] [Accepted: 12/30/2023] [Indexed: 01/12/2024] Open
Abstract
Breast milk, an indispensable source of immunological and nutrient components, is essential for the growth and development of newborn mammals. MicroRNAs (miRNAs) are present in various tissues and body fluids and are selectively packaged inside exosomes, a type of membrane vesicle. Milk exosomes have potential regulatory effects on the growth, development, and immunity of newborn piglets. To explore the differences in milk exosomes related to the breed and milk type, we isolated exosomes from colostrum and mature milk from domestic Bamei pigs and foreign Landrace pigs by using density gradient centrifugation and then characterized them by transmission electron microscopy (TEM) and nanoparticle tracking analysis (NTA). Furthermore, the profiles and functions of miRNAs in the two types of pig milk exosomes were investigated using miRNA-seq and bioinformatics analysis. We identified a total of 1081 known and 2311 novel miRNAs in pig milk exosomes from Bamei and Landrace pigs. These differentially expressed miRNAs (DE-miRNAs) are closely associated with processes such as cell signaling, cell physiology, and immune system development. Functional enrichment analysis showed that DE-miRNA target genes were significantly enriched in endocytosis, the T cell receptor signaling pathway, and the Th17 cell differentiation signaling pathway. The exosomal miRNAs in both the colostrum and mature milk of the two pig species showed significant differences. Based on related signaling pathways, we found that the colostrum of local pig breeds contained more immune-system-development-related miRNAs. This study provides new insights into the possible function of milk exosomal miRNAs in the development of the piglet immune system.
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Affiliation(s)
- Jie Li
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.L.); (X.S.); (S.Z.); (Q.Y.); (Z.Y.); (P.W.); (X.G.); (S.G.)
| | - Xuefeng Shang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.L.); (X.S.); (S.Z.); (Q.Y.); (Z.Y.); (P.W.); (X.G.); (S.G.)
| | - Sen Zhang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.L.); (X.S.); (S.Z.); (Q.Y.); (Z.Y.); (P.W.); (X.G.); (S.G.)
| | - Qiaoli Yang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.L.); (X.S.); (S.Z.); (Q.Y.); (Z.Y.); (P.W.); (X.G.); (S.G.)
| | - Zunqiang Yan
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.L.); (X.S.); (S.Z.); (Q.Y.); (Z.Y.); (P.W.); (X.G.); (S.G.)
| | - Pengfei Wang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.L.); (X.S.); (S.Z.); (Q.Y.); (Z.Y.); (P.W.); (X.G.); (S.G.)
| | - Xiaoli Gao
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.L.); (X.S.); (S.Z.); (Q.Y.); (Z.Y.); (P.W.); (X.G.); (S.G.)
| | - Shuangbao Gun
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.L.); (X.S.); (S.Z.); (Q.Y.); (Z.Y.); (P.W.); (X.G.); (S.G.)
- Gansu Research Center for Swine Production Engineering and Technology, Lanzhou 730070, China
| | - Xiaoyu Huang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.L.); (X.S.); (S.Z.); (Q.Y.); (Z.Y.); (P.W.); (X.G.); (S.G.)
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Mahala S, Kumar A, Pandey HO, Saxena S, Khanna S, Kumar M, Kumar D, De UK, Pandey AK, Dutt T. Milk exosomal microRNA profiling identified miR-375 and miR-199-5p for regulation of immune response during subclinical mastitis of crossbred cattle. Mol Biol Rep 2024; 51:59. [PMID: 38165514 DOI: 10.1007/s11033-023-09070-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 11/10/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND The dairy industry has experienced significant economic losses as a result of mastitis, an inflammatory disease of cows, including both subclinical and clinical cases. Milk exosome microRNAs have gained attention due to their stable and selective wrapping nature, offering potential for the prognosis and diagnosis of bovine mastitis, the most common pathological condition of the mammary gland. METHODS AND RESULTS In the present investigation, the microRNA profile of milk exosomes was explored using high-throughput small RNA sequencing data in sub-clinical mastitic and healthy crossbred Vrindavani cattle. In both groups, 349 microRNAs were identified, with 238 (68.19%) microRNAs co-expressed; however, 35 and 76 distinct microRNAs were found in subclinical mastitic and healthy cattle, respectively. Differential expression analysis revealed 11 microRNAs upregulated, and 18 microRNAs were downregulated in sub-clinical mastitic cattle. The functional annotation of the target genes of differentially expressed known and novel microRNAs including bta-miR-375, bta-miR-199-5p and bta-miR-12030 reveals their involvement in the regulation of immune response and inflammatory mechanisms and could be involved in development of mastitis. CONCLUSIONS The analysis of milk exosomal miRNAs cargos hold great promise as an approach to study the underlying molecular mechanisms associated with mastitis in high milk producing dairy cattle. Concurrently, the significantly downregulated miR-375 may upregulate key target genes, including CTLA4, IHH, IRF1, and IL7R. These genes are negative regulators of immune response pathways, which could be associated with impaired inflammatory mechanisms in mammary cells. According to the findings, bta-miR-375 could be a promising biomarker for the development of mastitis in dairy cattle.
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Affiliation(s)
- Sudarshan Mahala
- Animal Genetics Division, Indian Council of Agricultural Research (ICAR)-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, 243122, India
| | - Amit Kumar
- Animal Genetics Division, Indian Council of Agricultural Research (ICAR)-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, 243122, India.
| | - Hari Om Pandey
- Livestock Production and Management Section, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India
| | - Shikha Saxena
- Animal Genetics Division, Indian Council of Agricultural Research (ICAR)-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, 243122, India
| | - Shivani Khanna
- Animal Genetics Division, Indian Council of Agricultural Research (ICAR)-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, 243122, India
| | - Manoj Kumar
- Animal Genetics Division, Indian Council of Agricultural Research (ICAR)-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, 243122, India
| | - Deepak Kumar
- Veterinary Biotechnology Division, Indian Council of Agricultural Research (ICAR)-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, 243122, India
| | - Ujjwal Kumar De
- Medicine Division, Indian Council of Agricultural Research (ICAR)-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, 243122, India
| | - Ashwni Kumar Pandey
- Animal Genetics Division, Indian Council of Agricultural Research (ICAR)-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, 243122, India
| | - Triveni Dutt
- Livestock Production and Management Section, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India
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Melnik BC, Schmitz G. Milk Exosomal microRNAs: Postnatal Promoters of β Cell Proliferation but Potential Inducers of β Cell De-Differentiation in Adult Life. Int J Mol Sci 2022; 23:ijms231911503. [PMID: 36232796 PMCID: PMC9569743 DOI: 10.3390/ijms231911503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/15/2022] [Accepted: 09/20/2022] [Indexed: 11/16/2022] Open
Abstract
Pancreatic β cell expansion and functional maturation during the birth-to-weaning period is driven by epigenetic programs primarily triggered by growth factors, hormones, and nutrients provided by human milk. As shown recently, exosomes derived from various origins interact with β cells. This review elucidates the potential role of milk-derived exosomes (MEX) and their microRNAs (miRs) on pancreatic β cell programming during the postnatal period of lactation as well as during continuous cow milk exposure of adult humans to bovine MEX. Mechanistic evidence suggests that MEX miRs stimulate mTORC1/c-MYC-dependent postnatal β cell proliferation and glycolysis, but attenuate β cell differentiation, mitochondrial function, and insulin synthesis and secretion. MEX miR content is negatively affected by maternal obesity, gestational diabetes, psychological stress, caesarean delivery, and is completely absent in infant formula. Weaning-related disappearance of MEX miRs may be the critical event switching β cells from proliferation to TGF-β/AMPK-mediated cell differentiation, whereas continued exposure of adult humans to bovine MEX miRs via intake of pasteurized cow milk may reverse β cell differentiation, promoting β cell de-differentiation. Whereas MEX miR signaling supports postnatal β cell proliferation (diabetes prevention), persistent bovine MEX exposure after the lactation period may de-differentiate β cells back to the postnatal phenotype (diabetes induction).
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Affiliation(s)
- Bodo C. Melnik
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, D-49076 Osnabrück, Germany
- Correspondence: ; Tel.: +49-52-4198-8060
| | - Gerd Schmitz
- Institute for Clinical Chemistry and Laboratory Medicine, University Hospital of Regensburg, University of Regensburg, D-93053 Regensburg, Germany
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