Comparative Proteomic Analysis of the Telogen-to-Anagen Transition in Cashmere Goat Secondary Hair Follicles
Ontology highlight
ABSTRACT:
INSTRUMENT(S): Q Exactive
ORGANISM(S): Capra Hircus (goat)
TISSUE(S): Skin
SUBMITTER: 
Xiao yu Han
LAB HEAD: Xiaoyu Han
PROVIDER: PXD060635 | Pride | 2025-02-13
REPOSITORIES: pride
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| Cl10HXY_bjhb1_.pep.xml | Pepxml | |||
| Cl10HXY_bjhb1_.prot.xml | Xml | |||
| Cl10HXY_bjhb1_1.raw | Raw | |||
| Cl10HXY_bjhb1_10.raw | Raw | |||
| Cl10HXY_bjhb1_2.raw | Raw |
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Project description:Secondary hair follicles (SHFs) produce the cashmere of goats. In the present study, SHF clusters were isolated under the microscope by cutting out the epidermis and removing the connective tissues. RNA sequencing was performed on the collected SHFs. Through genome-wide transcriptomic analysis, we discovered and characterized differentially expressed molecular signatures across the annual growth cycle of cashmere and demonstrated their differential expression features and importance in cashmere growth.
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Project description:In this study, the skin tissues were harvested from the three stages of hair follicle cycling (anagen, catagen and telogen) in a fiber-producing goat breed. In total, 63,109,004 raw reads were obtained by Solexa sequencing and 61,125,752 clean reads remained for the small RNA digitalization analysis. This resulted in the identification of 399 conserved miRNAs; among these, 326 miRNAs were expressed in all three follicular cycling stages, whereas 3, 12 and 11 miRNAs were specifically expressed in anagen, catagen, and telogen, respectively. We also identified 172 potential novel miRNAs by Mireap, 36 miRNAs were expressed in all three cycling stages, whereas 23, 29 and 44 miRNAs were specifically expressed in anagen, catagen, and telogen, respectively. Gene Ontology and KEGG pathway analyses indicated that five major biological pathways (Metabolic pathways, Pathways in cancer, MAPK signalling pathway, Endocytosis and Focal adhesion) accounting for 23.08% of target genes among 278 biological functions, indicating that these pathways are likely to play significant roles during hair cycling. the skin tissues were harvested from the three stages of hair follicle cycling (anagen, catagen and telogen) in a fiber-producing goat breed
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Project description:we evaluated the Arbas Cashmere goat, a species that is especially used in this type of research. The goats were exposed to an experimentally controlled short photoperiod to study the regulation of cyclical cashmere growth. Exposure to a short photoperiod extended the anagen phase of the Cashmere goat hair follicle to increase cashmere production. Based on assessments of tissue sections, it was observed that the short photoperiod significantly induced cashmere growth. A comparison of the differences in gene expression between the short photoperiod and the natural conditions using gene chip technology supported this conclusion. Using the gene chip data, we identified genes that showed altered expression under the short photoperiod compared to natural conditions, and it was found that these genes are involved in the biological processes of hair follicle growth, structural composition of the hair follicle, and the morphogenesis of the surrounding skin appendages. Based on their similar weights, health conditions and good reproductive performance in a group of the same strain, we chose 62-year-old female adult Arbas Cashmere goats as our research specimens and randomly divided them into a test group (T1, T2, T3) and a control group (C1, C2, C3).The goats in the test group were grazed, fed, and allowed to drink from 9:30-16:30 daily, and they were housed in a dark shed with good air conditions for the rest of the time. The temperature in the shed was 1 degree less than that outside, and the opacity was controlled at approximately 0.1 lux. The control group was grazed in natural conditions. We used regular management to care for all of the goats.
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