TY - JOUR A1 - Sarkar, Ryan A1 - Pampaloni, Francesco T1 - In vitro models of bone marrow remodelling and immune dysfunction in space: present state and future directions T2 - Biomedicines N2 - Spaceflight affects the body on every level. Reports on astronaut health identify bone marrow remodelling and dysfunction of the innate immune system as significant health risks of long-term habitation in space. Microgravity-induced alterations of the bone marrow induce physical changes to the bone marrow stem cell niche. Downstream effects on innate immunity are expected due to impaired hematopoiesis and myelopoiesis. To date, few studies have investigated these effects in real microgravity and the sparsely available literature often reports contrasting results. This emphasizes a need for the development of physiologically relevant in vitro models of the bone marrow stem cell niche, capable of delivering appropriate sample sizes for robust statistics. Here, we review recent findings on the impact of spaceflight conditions on innate immunity in in vitro and animal models and discusses the latest in vitro models of the bone marrow stem cell niche and their potential translatability to gravitational biology research. KW - 3D cell culture KW - bone marrow niche KW - hematopoiesis KW - hematopoietic progenitor cells KW - innate immunity KW - mesenchymal stem cells KW - microgravity KW - myelopoiesis Y1 - 2022 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/69289 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-692894 SN - 2227-9059 N1 - This work was supported by the European Space Agency through Grant/Award Number: CORA-GBF-2017-001 and the Deutsches Zentrum für Luft- und Raumfahrt (German Aerospace Center) through grant 50WB2019. The publication fees were supported by the Open Access Fund of Goethe Universität Frankfurt am Main. VL - 10 IS - 4, art. 766 SP - 1 EP - 25 PB - MDPI CY - Basel ER -