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IF30.9!南京大学&南京医科大学联手用“国自然”荣登《Cell》子刊!竟发现父亲运动可通过精子miRNA提升后代耐力!

  • 2026-04-23 21:57:38
IF30.9!南京大学&南京医科大学联手用“国自然”荣登《Cell》子刊!竟发现父亲运动可通过精子miRNA提升后代耐力!
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引言

父亲的运动习惯能否遗传给下一代?这篇发表在《Cell Metabolism》上的研究给出了肯定的答案。研究者发现,父代小鼠的耐力运动训练可通过精子中的microRNAs传递给子代,使子代小鼠在不经任何训练的情况下,天生具备更强的耐力运动能力和更好的代谢健康。

机制上,运动诱导的父代精子miRNAs在受精卵中直接靶向抑制核受体辅抑制因子1,从而在胚胎早期重编程转录网络,促进子代骨骼肌线粒体生物发生和氧化代谢。这一发现揭示了运动获益跨代遗传的分子机制,为通过父代生活方式干预改善后代健康提供了全新的表观遗传学视角。

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文献解读

文章标题:父代运动通过精子microRNA赋予子代耐力运动能力

发表期刊:Cell Metabolism

发表时间:2025年10月6日

影响因子:IF30.9/Q1

研究背景

父母的生活方式对后代健康的影响日益受到关注。虽然母代运动对子代代谢健康的益处已有较多报道,但父代运动能否通过精子将获得性性状传递给子代,其机制尚不明确。本研究通过运动训练小鼠模型、肌肉特异性PGC-1α转基因小鼠模型、精子RNA显微注射和早期胚胎基因干预等系列实验,从而增强子代耐力运动能力的跨代遗传调控轴。

研究方法

本研究综合运用了C57BL/6J小鼠8周跑台运动训练模型、MCK-PGC-1α肌肉特异性转基因小鼠模型、精子总RNA/长链RNA/小RNA显微注射及体外受精胚胎移植技术、线粒体超微结构透射电镜分析、琥珀酸脱氢酶和柠檬酸合酶活性测定等,系统评估了父代运动对子代表型的影响及分子机制。

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研究结果
0

1

父代运动增强F1子代耐力运动能力并改善代谢健康

将经过8周跑台训练或静坐的雄性C57BL/6J小鼠与正常雌鼠交配,产生的雄性F1子代在未接受任何训练的情况下,F1-Et的跑台力竭时间最大距离均显著优于F1-Sed,同时血乳酸水平更低(图1)。

图1. 父代运动增强F1子代耐力运动能力、触发肌纤维类型转变并增加线粒体质量

间接测热法显示F1-Et的耗氧量和能量消耗显著升高,而自主活动度和呼吸交换率无差异。F1-Et还表现出更高的去脂体重、更低的脂肪含量和更好的骨密度。在低强度耐力测试和倒挂网格测试中,F1-Et同样表现更优。

2

肌肉特异性PGC-1α过表达直接赋予其转基因阴性F1子代高耐力运动能力

为验证PGC-1α在跨代遗传中的作用,研究者使用了MCK-PGC-1α转基因小鼠,其骨骼肌特异性过表达PGC-1α,模拟运动训练的表型。将F0-PGC-1αTG与野生型雌鼠交配,产生转基因阳性和转基因阴性子代(图2)。

图2. F0肌肉特异性PGC-1α过表达增强其转基因阴性F1子代的耐力运动能

尽管F1-PGC-1αWT不携带转基因,但其耐力运动能力峰值VO2ΔVO2均显著优于F1-Sed对照。F1-PGC-1αWT的腓肠肌中氧化型纤维比例、SDH活性、mtDNA含量、CS活性和线粒体蛋白表达均显著高于F1-Sed。

3

父代运动改善F1子代高脂饮食诱导的糖代谢紊乱

将F1-Et和F1-Sed雄性子代进行12周高脂饮食喂养后,虽然两组体重增加无差异,但F1-Et-HFD的葡萄糖耐量和胰岛素敏感性均显著优于F1-Sed-HFD图3)。

图3. 父代运动改善F1子代高脂饮食诱导的糖代谢紊乱

18F-FDG PET/CT显像显示,F1-Et-HFD的腓肠肌和胫骨前肌中葡萄糖摄取显著增加,而心脏、比目鱼肌、棕色脂肪和白色脂肪组织无差异。F1-Et-HFD的腓肠肌中糖原含量、AKT磷酸化和GLUT4蛋白表达均显著升高。

4

精子小RNA(而非长链RNA)介导运动表型的跨代遗传

提取F0-Et和F0-Sed精子总RNA,显微注射至正常受精卵后移植,产生的F1子代中,F1-RNA-Et表现出与F1-Et相似的表型:更高的去脂体重、更低的脂肪含量、更强的耐力运动能力、更高的VO2和能量消耗、腓肠肌中更高的氧化型纤维比例、线粒体质量和线粒体蛋白表达图4)。

图4. 精子小RNA介导父代运动诱导的生理和代谢适应向F1子代的传递

而注射长链RNA的F1子代无任何表型差异。进一步注射精子小RNA的F1子代同样完全复现了运动表型,且F1-sRNA-Et-HFD同样表现出改善的糖耐量和胰岛素敏感性。这些结果证明,精子中的小RNA是介导父代运动获益跨代遗传的关键分子。

5

运动诱导的精子miRNAs显著改变、转移至卵母细胞并抑制早期胚胎NCoR1表达

小RNA深度测序显示,F0-Et和F0-PGC-1αTG精子中miRNAs均显著上调,与F0-Sed相比分别鉴定出52个和77个差异表达miRNAs,其中27个miRNAs在两组中共同差异表达(图5)。

图5. 父代运动诱导的精子miRNA变化及其向卵母细胞的转移和对胚胎NCoR1的抑制

在人类中,7个保守miRNAs在耐力训练男性的精子中也显著上调。定量分析显示,运动组精子中miR-148a-3p拷贝数约为静坐组的3倍。对2-细胞期受精卵的测序和RT-qPCR证实,运动来源的精子miRNAs可高效转移至受精卵。GO分析显示miRNAs靶基因富集于“转录辅调节活性”,其中NCoR1是核心靶点。

6

显微注射miR-148a-3p至正常受精卵可赋予子代高耐力运动能力

向正常受精卵显微注射生理浓度的合成miR-148a-3p模拟物,产生的F1子代完全复现了运动子代的表型:更高的去脂体重、更低的脂肪含量、更强的耐力运动能力、腓肠肌中氧化型纤维比例增加、线粒体质量增加、线粒体蛋白表达升高(图6)。

图6. 向受精卵注射miR-148a-3p增强子代耐力运动能力

8-细胞期胚胎中NCoR1蛋白mRNA显著降低,PPARs和ERRα升高。这些结果证实,单个miRNA足以介导父代运动对子代耐力表型的跨代遗传效应。

文章小结

本研究首次揭示父代运动通过精子miRNAs跨代遗传增强子代耐力运动能力的完整机制。

发现父代耐力运动可将其运动表型通过非遗传方式传递给雄性F1子代;是介导这一效应的关键分子;阐明运动诱导的精子miRNAs在早期胚胎中靶向抑制NCoR1,从而重编程线粒体生物发生和氧化代谢网络;单个miRNA注射即可完全复现运动表型。

这一发现为通过父代生活方式干预改善后代代谢健康提供了全新的表观遗传学靶点,也为“运动模拟物”的开发提供了理论依据。

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  1. CONNECT:[ UseTime:0.000457s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000878s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000328s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000269s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000519s ]
  6. SELECT * FROM `set` [ RunTime:0.000196s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000737s ]
  8. SELECT * FROM `article` WHERE `id` = 520656 LIMIT 1 [ RunTime:0.000549s ]
  9. UPDATE `article` SET `lasttime` = 1776972447 WHERE `id` = 520656 [ RunTime:0.004060s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000234s ]
  11. SELECT * FROM `article` WHERE `id` < 520656 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000525s ]
  12. SELECT * FROM `article` WHERE `id` > 520656 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000512s ]
  13. SELECT * FROM `article` WHERE `id` < 520656 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002589s ]
  14. SELECT * FROM `article` WHERE `id` < 520656 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000800s ]
  15. SELECT * FROM `article` WHERE `id` < 520656 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000814s ]
0.081221s