基础医学与临床 ›› 2022, Vol. 42 ›› Issue (8): 1243-1249.doi: 10.16352/j.issn.1001-6325.2022.08.1243

• 研究论文 • 上一篇    下一篇

环磷酰胺诱导大鼠卵巢功能不全及差异表达基因分析

张玉林1, 邹姮2,3, 张觇宇2,3*   

  1. 1.重庆医科大学附属第一医院 妇科,重庆 400016;
    2.重庆医科大学附属第二医院 妇产科 生殖医学中心,重庆 400010;
    3.教育部生殖与发育国际合作联合实验室,重庆 400010
  • 收稿日期:2021-11-16 修回日期:2022-05-10 出版日期:2022-08-05 发布日期:2022-08-01
  • 通讯作者: *zhangchanyu@hospital.cqmu.edu.cn
  • 基金资助:
    重庆市科委项目(2017ZDXM011)

Analysis of cyclophosphamide induced ovarian insufficiency and differentially expressed genes in rats

ZHANG Yu-lin1, ZOU Heng2,3, ZHANG Chan-yu2,3*   

  1. 1. Department of Gynecology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016;
    2. the Center for Reproductive Medicine, Department of Obstetrics and Gynecology, the Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010;
    3. Joint International Research Lab for Reproduction and Development, Ministry of Education, Chongqing 400010, China
  • Received:2021-11-16 Revised:2022-05-10 Online:2022-08-05 Published:2022-08-01
  • Contact: *zhangchanyu@hospital.cqmu.edu.cn

摘要: 目的 建立稳定的环磷酰胺(CTX)诱导大鼠卵巢功能不全(POI)模型,并初步探讨其可能的机制。方法 不同剂量CTX给药,绘制生存曲线,选取最适剂量构建POI大鼠模型;ELISA检测性激素水平,阴道涂片观察动情周期,HE染色观察卵巢组织学;转录组测序初步探讨CTX损伤卵巢的机制。结果 中、高剂量CTX大鼠死亡率高,选用低剂量CTX建模;相较于对照组,模型组雌二醇、抗苗勒氏管激素降低(P<0.05),促卵泡激素升高(P<0.01);模型组约半数的大鼠出现动情周期紊乱(P<0.05);模型组窦前卵泡、窦卵泡减少(P<0.01,P<0.05)而闭锁卵泡增加(P<0.01)。两组间差异表达基因(DEGs)的功能主要涉及离子通道及跨膜转运,且显著富集于神经活性配体-受体相互作用通路、cAMP信号通路、钙信号通路、轴突导向通路等。通过DEGs的蛋白相互作用网络筛选出14个关键基因,其中Lep、Shh、Ntrk2、GRIN2A、CAMK2A、CaSR及Pvalb被发现与卵巢功能有密切联系。结论 低剂量CTX成功诱导大鼠POI模型,神经活性配体-受体相互作用通路、cAMP信号通路、钙信号通路、轴突导向等通路是CTX卵巢损伤重要的作用通路, Lep、Shh、Ntrk2、GRIN2A、CAMK2A、CaSR及Pvalb是潜在关键基因。

关键词: 早发性卵巢功能不全, 环磷酰胺, 机制

Abstract: Objective To establish a stable cyclophosphamide(CTX) induced ovarian insufficiency rat model and to explore the mechanisms. Methods The survival curve of rats after intraperitoneal injection of different dosage of CTX was drawn and the optimal dose was determined. Sex hormone level, estrous cycle and ovarian histological change were further observed. The underlying mechanisms were explored by transcriptome sequencing. Results The mortality rate of medium and high dose in CTX group was high, so low dose CTX was chosen. After CTX exposure, E2 and AMH decreased(both P<0.05),while FSH increased(P<0.01). About half of the model rats showed irregular estrous cycles(P<0.05). The preantral and antral follicles decreased(P<0.01, P<0.05), while atresia follicles increased (P<0.01). Transcriptome sequencing analysis showed that differentially expressed genes (DEGs) between two groups functioned in channel activity and in transmembrane transporter activity. DEGs mainly enriched in neuroactive ligand-receptor interaction pathway, cAMP signal pathway and calcium signaling pathway, axon guidance. According to the protein-protein interaction network of DEGs,we screened out 14 hub genes. Among them, Leptin, Shh,Ntrk2,GRIN2A,CAMK2A,CaSR and Pvalb have been revealed to be closely related to ovarian function. Conclusions A POI rat model induced by CTX was successfully constructed; the neuroactive ligand-receptor interaction pathway, cAMP signal pathway, calcium signaling pathway and axon guidance pathway are enriched pathways. Lep, Shh, Ntrk2, GRIN2A, CAMK2A, CaSR and Pvalb are potentially key genes.

Key words: POI, cyclophosphamide, mechanisms

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