Project description:Different doses of glucose were inused into dairy goat mammary gland. The mammary gland tissues were biopsied to analyze the changes of transcriptome responding to glucose infusion.
Project description:In this study, two small RNA libraries were constructed using dry period and peak lactation dairy goat mammary gland tissues and sequenced by the Illumina Solexa high-throughput sequencing system. A total of 346 conserved and 95 novel miRNAs were identified in the dairy goat. The expression of miRNAs was confirmed by qRT-PCR in nine tissues and the mammary gland during development cycles. In addition, several candidate miRNAs that may be involved in mammary gland development and lactation were found by the comparison of miRNA expression profiles among different tissue and developmental stages of the mammary gland. This study provides the identification and profile of miRNAs related to the biology of the mammary gland in the dairy goat. The identification of these miRNAs could contribute to understanding the molecular mechanisms of lactation physiology and the development of the mammary gland in the dairy goat.
Project description:Five healthy Laoshan dairy goats (four years old, third lactation) from Qingdao Laoshan dairy goat primary farm (Shandong Province, China) were used. The mammary gland samples were collected surgically after general anaesthesia using Xylazine Hydrochloride injection solution (Huamu Animal Health Products Co., Ltd. China) at corresponding lactation stage, including early, peak and late lactations.
Project description:Next-generation sequencing (NGS) has revolutionized systems-based analysis of miRNA expression files. The goals of this study are to obtain the miRNA expression files in dairy goat mammary gland at early lactation (10th day after parturition) and early involution (5th day after forced weaning at late lactation, 218 day after parturition).
Project description:Purpose: miRNAs, a member of the small RNA, play critical roles in the mammalian spermatogenesis. Spermatogonia was the foundation of spermatogenesis and valuable for the study of spermatogenesis. However, it is still not clear that the expression profiling of the miRNAs in spermatogonia of dairy goat. Methods: The CD49f was one of the surface markers for spermatogonia enrichment by MACS. Therefore, we used CD49f microbeads antibody to purify CD49f-positive and negative cells of dairy goat testicular cells by MACS (Magnetic Activated Cell Sorting), and then in-depth analyzed the miRNA expression in these cells using Illumina sequencing technology. Results: The results of miRNAs expression profiling in purified CD49f-positive and negative testicular cells showed that 933 were miRNAs upregulated in CD49f-positive cells and 916 were miRNAs upregulated in CD49f-negative cells with a 2-fold increase, respectively; some spermatogonial stem cells(SSCs) specific miRNAs and marker genes in testis had a higher level expression in CD49f-positive testicular cells, such as miR-221, miR-23a, miR-29b, miR-24, miR-29a, miR-199b, miR-199a, miR-27a, miR-21. Conclusions: our comparative miRNAome data provided some useful miRNAs profiling data of dairy goat spermatogonia cells and suggested CD49f could be used to enrich dairy goat spermatogonia-like cells, including SSCs.
Project description:Tandem mass tagging (TMT) was employed in this study to explore the differential proteome of milk from Guanzhong dairy goats.These bioinformatics investigations will provide new insights into the physiological activities of proteins in goat milk from Guanzhong dairy goats, as well as a scientific foundation for future study into the creation of specialized functionalised dairy products, such as cancer prevention.
