{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:34:11Z","timestamp":1787027651751,"version":"build-2736575974"},"reference-count":60,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2025,6,25]],"date-time":"2025-06-25T00:00:00Z","timestamp":1750809600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"2025 Central Guidance for Local Science and Technology Development Funding Project","award":["ZYYD2025JD02"],"award-info":[{"award-number":["ZYYD2025JD02"]}]},{"name":"2025 Central Guidance for Local Science and Technology Development Funding Project","award":["2022A02013-1"],"award-info":[{"award-number":["2022A02013-1"]}]},{"name":"Major Science and Technology Special Project of the Xinjiang Uygur Autonomous Region","award":["ZYYD2025JD02"],"award-info":[{"award-number":["ZYYD2025JD02"]}]},{"name":"Major Science and Technology Special Project of the Xinjiang Uygur Autonomous Region","award":["2022A02013-1"],"award-info":[{"award-number":["2022A02013-1"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biology"],"abstract":"<jats:p>The Junggar Bactrian camel, a primitive indigenous breed in China, exhibits low reproductive efficiency under natural grazing conditions. This is partly attributed to the development of the epididymis and the quality of semen, both of which directly affect reproductive performance. The epididymis is a key male reproductive organ responsible for sperm storage and transport. However, the gene expression profile of camel epididymal tissue remains poorly understood. In this study, we conducted whole-transcriptome sequencing of epididymal tissues from Junggar Bactrian camels before and after sexual maturity. A total of 683 differentially expressed mRNAs (DEmRNAs) were identified, including TPM2, ITGA5, FASN, and ACP5, of which 415 were upregulated and 268 were downregulated. Additionally, 260 differentially expressed long non-coding RNAs (DELncRNAs), including LOC123611838, LOC105083505, and LOC123614702, were identified, with 113 upregulated and 147 downregulated. An additional 11 differentially expressed microRNAs (DEmiRNAs), including eca-miR-206 and eca-miR-216a, were also detected. Gene Ontology (GO) annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses revealed that key differentially expressed genes (DEGs), including TPM2, ITGA5, DDIT4, FASN, and ACP5, were mainly involved in pathways such as Cell Adhesion Molecules, Phospholipase D signaling, Cytokine\u2013Cytokine Receptor Interaction, and Olfactory Transduction. This study presents a comprehensive whole-transcriptome analysis of the epididymis in Junggar Bactrian camels before and after sexual maturity, identifying key genes and regulatory pathways associated with epididymal development and reproductive function. These findings provide a theoretical foundation and valuable data for future research on reproductive performance and epididymal biology in Bactrian camels.<\/jats:p>","DOI":"10.3390\/biology14070760","type":"journal-article","created":{"date-parts":[[2025,7,1]],"date-time":"2025-07-01T10:45:08Z","timestamp":1751366708000},"page":"760","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Whole-Transcriptome Sequencing and Differential Expression Analysis of the Epididymis in Junggar Bactrian Camels Before and After Sexual Maturity"],"prefix":"10.3390","volume":"14","author":[{"given":"Jiahao","family":"Liu","sequence":"first","affiliation":[{"name":"College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinkui","family":"Yao","sequence":"additional","affiliation":[{"name":"College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China"},{"name":"Xinjiang Key Laboratory of Equine Breeding and Exercise Physiology, Urumqi 830052, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun","family":"Meng","sequence":"additional","affiliation":[{"name":"College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China"},{"name":"Xinjiang Key Laboratory of Equine Breeding and Exercise Physiology, Urumqi 830052, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7148-4557","authenticated-orcid":false,"given":"Jianwen","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China"},{"name":"Xinjiang Key Laboratory of Equine Breeding and Exercise Physiology, Urumqi 830052, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-1881-1221","authenticated-orcid":false,"given":"Yaqi","family":"Zeng","sequence":"additional","affiliation":[{"name":"College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China"},{"name":"Xinjiang Key Laboratory of Equine Breeding and Exercise Physiology, Urumqi 830052, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Linling","family":"Li","sequence":"additional","affiliation":[{"name":"College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-5822-8366","authenticated-orcid":false,"given":"Wanlu","family":"Ren","sequence":"additional","affiliation":[{"name":"College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China"},{"name":"Xinjiang Key Laboratory of Equine Breeding and Exercise Physiology, Urumqi 830052, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,6,25]]},"reference":[{"key":"ref_1","first-page":"84","article-title":"Conservation and utilization of genetic resources of Bactrian camel in Tarim, Xinjiang","volume":"45","author":"Yu","year":"2025","journal-title":"Chin. 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