猪冷冻精子的细胞凋亡及凋亡途径初步研究

doi:10.11843/j.issn.0366-6964.2015.08.009

畜牧兽医学报 ›› 2015, Vol. 46 ›› Issue (8): 1341-1347.doi: 10.11843/j.issn.0366-6964.2015.08.009

猪冷冻精子的细胞凋亡及凋亡途径初步研究

王昕^1,2,3，戴建军^1,2*，吴彩凤 ^1,2，张树山 ^1,2，吴鋆龙^1,2,3，张德福^1,2*

(1.上海海洋大学水产与生命学院，上海 201306； 2.上海市农业科学院畜牧兽医研究所，上海 201106；3.上海农业遗传育种重点实验室动物遗传工程研究室，上海 201106)

收稿日期:2015-01-05 出版日期:2015-08-23 发布日期:2015-08-18
通讯作者: 戴建军，E-mail：blackman0520@126.com；张德福，E-mail：zhangdefuzdf@163.com
作者简介:王昕 (1988-)，女，山西太原人，硕士，主要从事动物胚胎工程研究，E-mail：winniexin1223@126.com
基金资助:
上海市科委农业成果转化专项（123919N0700；133919N1700）；国家自然科学基金（31372315）；国家转基因生物新品种培育科技重大专项（2014ZX08006-005；2009ZX08006-014B）

Preliminary Studies on Apoptosis and Apoptotic Pathways of Frozen Boar Spermatozoa

WANG Xin^1,2,3，DAI Jian-jun^1,2* ，WU Cai-feng^1,2,ZHANG Shu-shan^1,2，WU Yun-long^1,2,3，ZHANG De-fu^1,2*

(1.College of Fisheries and Life Science，Shanghai Ocean University，Shanghai 201306，China；2.Institute of Animal Science and Veterinary Medicine，Shanghai Academy of Agricultural Sciences，Shanghai 201106, China；3.Division of Animal Genetic Engineering，Shanghai Municipal Key Laboratory of Agri-genetics and Breeding，Shanghai 201106，China)

Received:2015-01-05 Online:2015-08-23 Published:2015-08-18

摘要/Abstract

摘要：

旨在研究低温冷冻解冻对精子细胞凋亡的影响，并探讨凋亡发生的可能相关途径。采用流式细胞仪检测解冻后精子内的ROS水平和TUNEL染色后的细胞凋亡情况，使用酶标仪检测精子内ATP含量，利用相对荧光定量PCR技术检测不同凋亡途径中相关基因的表达量变化。结果表明：冷冻后精子活力、顶体和质膜完整率显著下降（P<0.05）；冷冻精子TUNEL染色后的凋亡率（80.4%）与新鲜组（9.7%）相比显著升高（P<0.05）；冷冻组精子内ROS绿色荧光比率（58.2%）亦显著高于新鲜组（P<0.05）；与新鲜组0.926 μmol•L^-1的ATP浓度相比，冷冻组精子的ATP浓度（0.247 μmol•L^-1）则显著下降（P<0.05）；qRT-PCR检测结果显示，冷冻组中TNF-α、Fas、Caspase家族、P53和Bax基因相对表达量升高，其中Fas、P53、TNF-α、Caspase-8和Caspase-9等相对表达量显著升高（P<0.05）；BCL-2、BIRC-5、MnSOD、CuZnSOD和SURVIVN基因相对表达量降低，其中BIRC-5、MnSOD、SURVIVN显著降低（P<0.05）。结果表明：低温冷冻解冻会使猪精子细胞发生严重的凋亡，死亡受体外源性凋亡途径和线粒体内源性凋亡途径均可能介导了冷冻后精子的凋亡。

关键词: 猪, 精子冷冻, 细胞凋亡, 凋亡途径

Abstract:

In order to investigate the effects of cryopreservation on boar spermatozoa apoptosis and apoptotic pathway，the flow cytometry was used to detect the apoptosis state and ROS level of boar frozen spermatozoa.ATP content was measured by luminometer，and the mRNA expression level of genes involved in different apoptotic pathways were measured by real-time quantitative RT-PCR method.The results showed that the motility，normal acrosome rate and plasma membrane integrity rate of sperm after freezing were decreased greatly (P<0.05).The TUNEL-positive spermatozoa rate (80.4%) from freezing group were much higher than that of fresh group (9.7%) (P<0.05).The percentage of ROS-positive spermatozoa in freezing group (58.2%) was also obviously higher than that of fresh group (P<0.05).The cryopreservation caused a significant decrease of ATP concentration in freezing group (0.247 μmol•L^-1) comparing with fresh group (0.926 μmol•L^-1) (P<0.05).qRT-PCR results showed that the relative expression level from promoting apoptosis genes (TNF-α，Fas，Caspase，P53 and Bax) were up-regulated，and in which the expression of Fas，P53，TNF-α，Caspase-8 and Caspase-9 increased greatly after cryopreservation (P<0.05).The relative expression level from inhibiting apoptosis genes (BCL-2，BIRC-5，MnSOD，CuZnSOD and SURVIVN) were down-regulated，and in which the expression of BIRC-5，MnSOD and SURVIVN decreased greatly (P<0.05).The results indicated that cryopreservation could lead to boar spermatozoa apoptosis.Not only extrinsic death receptor but also intrinsic mitochondrial signaling pathway might play key roles in mediating spermatozoa apoptosis after cryopreservation.

Key words: boar, spermatozoa cryopreservation, apoptosis, apoptotic pathway

中图分类号:

S828.2

王昕，戴建军，吴彩凤，张树山，吴鋆龙，张德福. 猪冷冻精子的细胞凋亡及凋亡途径初步研究[J]. 畜牧兽医学报, 2015, 46(8): 1341-1347.

WANG Xin，DAI Jian-jun，WU Cai-feng,ZHANG Shu-shan，WU Yun-long，ZHANG De-fu. Preliminary Studies on Apoptosis and Apoptotic Pathways of Frozen Boar Spermatozoa[J]. ACTA VETERINARIA ET ZOOTECHNICA SINICA, 2015, 46(8): 1341-1347.

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猪冷冻精子的细胞凋亡及凋亡途径初步研究

Preliminary Studies on Apoptosis and Apoptotic Pathways of Frozen Boar Spermatozoa

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