2026-04-17T17:14:38Zhttps://recercat.cat/oai/request

oai:recercat.cat:10230/588032025-12-12T01:55:43Zcom_2072_6col_2072_452952

00925njm 22002777a 4500 dc Riesco, Marta F. author García Valcarce, David author Sellés Egea, Alba author Esteve-Codina, Anna author Herráez, María Paz author Robles, Vanesa author 2024-01-23T07:24:16Z 2024-01-23T07:24:16Z 2023 Recent research has provided compelling evidence demonstrating that paternal exposure to different stressors can influence their offspring's phenotypes. We hypothesized that paternal stress can negatively impact the progeny, altering different miRs and triggering different physiological alterations that could compromise offspring development. To investigate this, we exposed zebrafish male siblings to a chronic stress protocol for 21 days. We performed RNA-sequencing (RNA-seq) analyses to identify differentially expressed small noncoding RNAs in 7-day postfertilization (dpf) larvae derived from paternally stressed males crossed with control females compared with the control progeny. We found a single miRNA differentially expressed-miR-29a-which was validated in larva and was also tested in the sperm, testicles, and brain of the stressed progenitors. We observed a vertical transmission of chronic stress to the unexposed larvae, reporting novel consequences of paternally inherited chronic stress at a molecular level. The deregulation of mi-R29a in those larvae could affect relevant biological processes affecting development, morphogenesis, or neurogenesis, among others. Additionally, these disruptions were associated with reduced rates of survival and hatching in the affected offspring. This research was funded by grant PID2019-108509RB-I00-MCIN/AEI/10.13039/501100011033. D.G.V. was funded by grant IJC2020-044091-I-MCIN/AEI/10.13039/501100011033. A.E.-C. is funded by ISCIII /MINECO (PT17/0009/0019) and cofunded by FEDER. RNA-seq Behavior Chronic stress Hatching rates Malformations Offspring Small-RNAs Survival miR-29a is downregulated in progenies derived from chronically stressed males