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Sajid GA, Uddin MJ, Al-Janabi SAA, Ibrahim AN, Cinar MU. MicroRNA expression profiling of ovine epithelial cells stimulated with the Staphylococcus aureus in vitro. Mamm Genome 2024:10.1007/s00335-024-10062-3. [PMID: 39215776 DOI: 10.1007/s00335-024-10062-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 08/08/2024] [Indexed: 09/04/2024]
Abstract
MicroRNAs (miRNAs) act as key gene expression regulators, influencing intracellular biological and pathological processes. They are of significant interest in animal genetics as potential biomarkers for animal selection and health. This study aimed to unravel the complex miRNA signature involved in mastitis in in vitro cell culture. For this purpose, we constructed a control and treatment model in ovarian mammary epithelial cells to analyze miRNA responses upon Staphylococcus aureus (S. aureus) stimulation. The high-throughput Illumina Small RNA protocol was employed, generating an average of 7.75 million single-end reads per sample, totaling 46.54 million reads. Standard bioinformatics analysis, including cleaning, filtering, miRNA quantification, and differential expression was performed using the miRbase database as a reference for ovine miRNAs. The results indicated differential expression of 63 miRNAs, including 33 up-regulated and 30 down-regulated compared to the control group. Notably, miR-10a, miR-10b, miR-21, and miR-99a displayed a significant differential expression (p ≤ 0.05) associated to signal transduction, transcriptional pathways, diseases of signal transduction by growth factor receptors and second messengers, MAPK signaling pathway, NF-κB pathway, TNFα, Toll Like Receptor 4 (TLR4) cascade, and breast cancer. This study contributes expanding miRNA databases, especially for sheep miRNAs, and identifies potential miRNA candidates for further study in biomarker identification for mastitis resistance and diagnosis.
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Affiliation(s)
- Ghulam Asghar Sajid
- Department of Animal Science, Faculty of Agriculture, Erciyes University, Melikgazi, Kayseri, 38039, Türkiye
| | - Muhammad Jasim Uddin
- Center for Biosecurity and One Health, Harry Butler Institute, Murdoch University, Murdoch, WA, 6150, Australia
- The School of Veterinary Medicine, Murdoch University, South Street, Murdoch, 6150, Australia
| | - Saif Adil Abbood Al-Janabi
- Department of Animal Science, Faculty of Agriculture, Erciyes University, Melikgazi, Kayseri, 38039, Türkiye
- Ministry of Agriculture, Office of Technical Deputy, Baghdad, Iraq
| | - Abdiaziz Nur Ibrahim
- Department of Animal Science, Faculty of Agriculture, Erciyes University, Melikgazi, Kayseri, 38039, Türkiye
| | - Mehmet Ulas Cinar
- Department of Animal Science, Faculty of Agriculture, Erciyes University, Melikgazi, Kayseri, 38039, Türkiye.
- Department of Veterinary Microbiology & Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA, 99164, USA.
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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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