China Animal Husbandry and Veterinary Medicine ›› 2025, Vol. 52 ›› Issue (1): 249-257.doi: 10.16431/j.cnki.1671-7236.2025.01.022

• Genetics and Breeding • Previous Articles    

Isolation,Purification and Identification of Sertoli Cell in Cryopreserved Testis of Pengbo Semi-fine Wool Sheep

LIU Haixia1, WANG Jian1,3, PINCUO Bandan2, ZHU Aiwen1, DEQING Zhuoga2, WANG Jun1,3, GESANG Jiacuo2   

  1. 1. Jiangsu Agri-Animal Husbandry Vocation College, Taizhou 225300, China;
    2. Institute of Animal Husbandry and Veterinary, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa 850000, China;
    3. Jiangsu Sci-Tech Demostration Garden of Modern Animal Hubandry, Taizhou 225300, China
  • Received:2024-04-09 Published:2024-12-30

Abstract: 【Objective】 Testicular Sertoli cells (SCs) are located in the epithelium of seminiferous tubules,which provide physical framework and energy material support for the development of male germ cells at different stages of differentiation,and are very important for spermatogenesis.The purpose of this experiment was to study the technical method of separating SCs from frozen testicular tissue in Pengbo Semi-fine wool sheep under the condition that it was inconvenient to obtain fresh testicular tissue samples in sheep. 【Method】 The cryopreserved testicular tissue of Pengbo Semi-fine wool sheep was resuscitated by cryopreservation solution.The morphology of the recovered testicular tissue was detected by hematoxylin-eosin (HE) staining.The testicular SCs were isolated,purified and cultured by combined enzyme digestion and differential adherence method,the growth pattern was observed,and the growth curve was drawn.The specific genes in testicular SCs were identified by RT-PCR and immunofluorescence staining (IF). 【Result】 The spermatic cord and leydig of frozen-thawed testis were well preserved.Spermatogenic epithelial cell suspension meeting the experimental requirements could be obtained after digestion with combined enzymes.After 2-4 h of separation and culture,the cells adhered to the wall,and the shape was spindle or irregular polygon.After 3-4 d of culture,they converged,and the growth rate was slow after 1-2 d of culture.The proliferation rate was accelerated after 3-4 d of culture,and,the proliferation rate was reduced after 7-8 d of culture.RT-PCR detection showed that GNDF,WT1,ABP and SOX9 genes were specifically expressed in testicular SCs of Pengbo Semi-fine wool sheep,and IF results showed that the specific antibodies GATA4 and Vimentin were immune positive. 【Conclusion】 The primary SCs that met the experimental conditions could be isolated and applied to scientific experimental research after the cryopreservation of testicular tissue pretreated with antifreeze was revived.

Key words: Pengbo Semi-fine wool sheep; cryopreservation; testicular Sertoli cells; separation and identification; cell culture

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