{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T03:09:55Z","timestamp":1791083395514,"version":"4.1.0"},"reference-count":70,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2025,3,27]],"date-time":"2025-03-27T00:00:00Z","timestamp":1743033600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Microgravity, defined by minimal gravitational forces, represents a unique environment that profoundly influences biological systems, including human cells. This review examines the effects of microgravity on biological processes and their implications for human health. Microgravity significantly impacts the immune system by disrupting key mechanisms, such as T cell activation, cytokine production, and macrophage differentiation, leading to increased susceptibility to infections. In cancer biology, it promotes the formation of spheroids in cancer stem cells and thyroid cancer cells, which closely mimic in vivo tumor dynamics, providing novel insights for oncology research. Additionally, microgravity enhances tissue regeneration by modulating critical pathways, including Hippo and PI3K-Akt, thereby improving stem cell differentiation into hematopoietic and cardiomyocyte lineages. At the organ level, microgravity induces notable changes in hepatic metabolism, endothelial function, and bone mechanotransduction, contributing to lipid dysregulation, vascular remodeling, and accelerated bone loss. Notably, cardiomyocytes derived from human pluripotent stem cells and cultured under microgravity exhibit enhanced mitochondrial biogenesis, improved calcium handling, and advanced structural maturation, including increased sarcomere length and nuclear eccentricity. These advancements enable the development of functional cardiomyocytes, presenting promising therapeutic opportunities for treating cardiac diseases, such as myocardial infarctions. These findings underscore the dual implications of microgravity for space medicine and terrestrial health. They highlight its potential to drive advances in regenerative therapies, oncology, and immunological interventions. Continued research into the biological effects of microgravity is essential for protecting astronaut health during prolonged space missions and fostering biomedical innovations with transformative applications on Earth.<\/jats:p>","DOI":"10.3390\/ijms26073058","type":"journal-article","created":{"date-parts":[[2025,3,28]],"date-time":"2025-03-28T04:11:40Z","timestamp":1743135100000},"page":"3058","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":31,"title":["Microgravity and Cellular Biology: Insights into Cellular Responses and Implications for Human Health"],"prefix":"10.3390","volume":"26","author":[{"given":"Nelson Adolfo","family":"L\u00f3pez Garz\u00f3n","sequence":"first","affiliation":[{"name":"Grupo de Investigaci\u00f3n en Salud (GIS), Departamento de Medicina Interna, Universidad del Cauca, Popayan 190003, Colombia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar\u00eda Virginia","family":"Pinz\u00f3n-Fern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Grupo de Investigaci\u00f3n en Salud (GIS), Departamento de Medicina Interna, Universidad del Cauca, Popayan 190003, Colombia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jhan S.","family":"Saavedra T.","sequence":"additional","affiliation":[{"name":"Grupo de Investigaci\u00f3n en Salud (GIS), Departamento de Medicina Interna, Universidad del Cauca, Popayan 190003, Colombia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1890-4983","authenticated-orcid":false,"given":"Humberto A.","family":"Nati-Castillo","sequence":"additional","affiliation":[{"name":"Interinstitutional Internal Medicine Group (GIMI 1), Department of Internal Medicine, Universidad Libre, Cali 760031, Colombia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-3717-383X","authenticated-orcid":false,"given":"Marlon","family":"Arias-Intriago","sequence":"additional","affiliation":[{"name":"One Health Research Group, Universidad de las Am\u00e9ricas, Quito 170124, Ecuador"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Camila","family":"Salazar-Santoliva","sequence":"additional","affiliation":[{"name":"One Health Research Group, Universidad de las Am\u00e9ricas, Quito 170124, Ecuador"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juan S.","family":"Izquierdo-Condoy","sequence":"additional","affiliation":[{"name":"One Health Research Group, Universidad de las Am\u00e9ricas, Quito 170124, Ecuador"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,3,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"20220869","DOI":"10.1098\/rsif.2022.0869","article-title":"Microgravity and Immune Cells","volume":"20","author":"Lv","year":"2023","journal-title":"J. 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