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Exercise alters mouse sperm small noncoding RNAs and induces a transgenerational modification of male offspring conditioned fear and anxiety.
- Source :
-
Translational psychiatry [Transl Psychiatry] 2017 May 02; Vol. 7 (5), pp. e1114. Date of Electronic Publication: 2017 May 02. - Publication Year :
- 2017
-
Abstract
- There is growing evidence that the preconceptual lifestyle and other environmental exposures of a father can significantly alter the physiological and behavioral phenotypes of their children. We and others have shown that paternal preconception stress, regardless of whether the stress was experienced during early-life or adulthood, results in offspring with altered anxiety and depression-related behaviors, attributed to hypothalamic-pituitary-adrenal axis dysregulation. The transgenerational response to paternal preconceptual stress is believed to be mediated by sperm-borne small noncoding RNAs, specifically microRNAs. As physical activity confers physical and mental health benefits for the individual, we used a model of voluntary wheel-running and investigated the transgenerational response to paternal exercise. We found that male offspring of runners had suppressed reinstatement of juvenile fear memory, and reduced anxiety in the light-dark apparatus during adulthood. No changes in these affective behaviors were observed in female offspring. We were surprised to find that running had a limited impact on sperm-borne microRNAs. The levels of three unique microRNAs (miR-19b, miR-455 and miR-133a) were found to be altered in the sperm of runners. In addition, we discovered that the levels of two species of tRNA-derived RNAs (tDRs)-tRNA-Gly and tRNA-Pro-were also altered by running. Taken together, we believe this is the first evidence that paternal exercise is associated with an anxiolytic behavioral phenotype of male offspring and altered levels of small noncoding RNAs in sperm. These small noncoding RNAs are known to have an impact on post-transcriptional gene regulation and can thus change the developmental trajectory of offspring brains and associated affective behaviors.
- Subjects :
- Animals
Anxiety psychology
Depression genetics
Depression psychology
Environmental Exposure adverse effects
Female
Gene Expression Regulation
Hypothalamo-Hypophyseal System physiopathology
Male
Mice
Mice, Inbred C57BL
Phenotype
Pituitary-Adrenal System physiopathology
RNA, Small Untranslated
Anxiety genetics
Fear psychology
Infectious Disease Transmission, Vertical veterinary
MicroRNAs genetics
Physical Conditioning, Animal adverse effects
Spermatozoa metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 2158-3188
- Volume :
- 7
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Translational psychiatry
- Publication Type :
- Academic Journal
- Accession number :
- 28463242
- Full Text :
- https://doi.org/10.1038/tp.2017.82