Histological and transcriptomic analysis of adipose and muscle of dairy calves supplemented with 5-hydroxytryptophan
| Autor: | Marcela G. Marrero, Lihe Liu, Francisco Peñagaricano, Jimena Laporta, Sena L. Field |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
Molecular biology Science Adipose tissue Biology Real-Time Polymerase Chain Reaction Article 5-Hydroxytryptophan chemistry.chemical_compound Adipocyte Internal medicine medicine Animals Muscle Skeletal Transcriptomics Cell Proliferation Multidisciplinary Cell growth Gene Expression Profiling Lipid metabolism Serotonin pathway Histone acetyltransferase binding Endocrinology Adipose Tissue Animals Newborn chemistry Dietary Supplements Medicine Cattle Female Serotonin |
| Zdroj: | Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | In mammals, peripheral serotonin is involved in regulating energy balance. Herein, we characterized the transcriptomic profile and microstructure of adipose and muscle in pre-weaned calves with increased circulating serotonin. Holstein bull calves (21 ± 2 days old) were fed milk replacer supplemented with saline (CON, 8 mL/day n = 4) or 5-hydroxytryptophan (5-HTP, 90 mg/day, n = 4) for 10 consecutive days. Calves were euthanized on d10 to harvest adipose and muscle for RNA-Sequencing and histological analyses. Twenty-two genes were differentially expressed in adipose, and 33 in muscle. Notably, Interferon gamma inducible protein-47 was highly expressed and upregulated in muscle and adipose (avg. log FC = 6.5). Enriched pathways in adipose tissue revealed serotonin’s participation in lipid metabolism and PPAR signaling. In muscle, enriched pathways were related to histone acetyltransferase binding, Jak-STAT signaling, PI3K-Akt signaling and cell proliferation. Supplementation of 5-HTP increased cell proliferation and total cell number in adipose and muscle. Adipocyte surface area was smaller and muscle fiber area was not different in the 5-HTP group. Manipulating the serotonin pathway, through oral supplementation of 5-HTP, influences signaling pathways and cellular processes in adipose and muscle related to endocrine and metabolic functions which might translate into improvements in calf growth and development. |
| Databáze: | OpenAIRE |
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