In this episode Dr. Raffaele Teperino shares insights from his ongoing research focused on developmental programming, particularly how paternal health before conception influences not only offspring health but also maternal health outcomes. As we trace his academic journey from studying biotechnology and pharmacology to leading his own lab, Dr. Teperino reflects on his early fascination with medicine, the pivotal experiences that shaped his career, and the integration of epigenetics into understanding metabolic diseases.
We discuss the nuances of epigenetics—going beyond simple chromatin biology to examine its wider implications on phenotypic variation. Dr. Teperino emphasizes his approach of modeling relevant physiological phenomena in the lab to better understand the underlying mechanisms driving conditions like obesity and metabolic disruption. A particular focus is placed on his experiences during his postdoctoral years, where he investigated the developmental pathways of hedgehog signaling and its metabolic implications in adipogenesis.
Our talk shifts towards the practical implications of his research, highlighting recent investigations into how circadian rhythms and paternal lifestyles influence offspring health. Dr. Teperino reveals his findings on how disturbances in circadian rhythms can lead to intergenerational health issues, showcasing the surprising effects observed in offspring of fathers experiencing circadian misalignment. We delve into the significance of seminal fluid as a potential medium for intergenerational transfer of stress responses, examining the role of stress hormones and their impacts on fetal development.
As we explore a fascinating recent study highlighting the impact of paternal diets on future generations, Dr. Teperino underscores the importance of understanding the shorter exposure periods sufficient to trigger these health changes. He presents data that links paternal obesity and preconception health to an increased risk of obesity and insulin resistance in children, challenging traditional narratives around maternal responsibility for offspring health.
References
Darr J, Tomar A, Lassi M, Gerlini R, Berti L, Hering A, Scheid F, Hrabě de Angelis M, Witting M, Teperino R. iTAG-RNA Isolates Cell-Specific Transcriptional Responses to Environmental Stimuli and Identifies an RNA-Based Endocrine Axis. Cell Rep. 2020 Mar 3;30(9):3183-3194.e4. doi: 10.1016/j.celrep.2020.02.020. PMID: 32130917.
Lassi M, Tomar A, Comas-Armangué G, Vogtmann R, Dijkstra DJ, Corujo D, Gerlini R, Darr J, Scheid F, Rozman J, Aguilar-Pimentel A, Koren O, Buschbeck M, Fuchs H, Marschall S, Gailus-Durner V, Hrabe de Angelis M, Plösch T, Gellhaus A, Teperino R. Disruption of paternal circadian rhythm affects metabolic health in male offspring via nongerm cell factors. Sci Adv. 2021 May 26;7(22):eabg6424. doi: 10.1126/sciadv.abg6424. PMID: 34039610; PMCID: PMC8153725.
Tomar A, Gomez-Velazquez M, Gerlini R, Comas-Armangué G, Makharadze L, Kolbe T, Boersma A, Dahlhoff M, Burgstaller JP, Lassi M, Darr J, Toppari J, Virtanen H, Kühnapfel A, Scholz M, Landgraf K, Kiess W, Vogel M, Gailus-Durner V, Fuchs H, Marschall S, Hrabě de Angelis M, Kotaja N, Körner A, Teperino R. Epigenetic inheritance of diet-induced and sperm-borne mitochondrial RNAs. Nature. 2024 Jun;630(8017):720-727. doi: 10.1038/s41586-024-07472-3. Epub 2024 Jun 5. PMID: 38839949; PMCID: PMC11186758.
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