RT Journal Article SR Electronic T1 Magnetic levitational bioassembly of 3D tissue construct in space JF Science Advances JO Sci Adv FD American Association for the Advancement of Science SP eaba4174 DO 10.1126/sciadv.aba4174 VO 6 IS 29 A1 Parfenov, Vladislav A. A1 Khesuani, Yusef D. A1 Petrov, Stanislav V. A1 Karalkin, Pavel A. A1 Koudan, Elizaveta V. A1 Nezhurina, Elizaveta K. A1 Pereira, Frederico DAS A1 Krokhmal, Alisa A. A1 Gryadunova, Anna A. A1 Bulanova, Elena A. A1 Vakhrushev, Igor V. A1 Babichenko, Igor I. A1 Kasyanov, Vladimir A1 Petrov, Oleg F. A1 Vasiliev, Mikhail M. A1 Brakke, Kenn A1 Belousov, Sergei I. A1 Grigoriev, Timofei E. A1 Osidak, Egor O. A1 Rossiyskaya, Ekaterina I. A1 Buravkova, Ludmila B. A1 Kononenko, Oleg D. A1 Demirci, Utkan A1 Mironov, Vladimir A. YR 2020 UL http://advances.sciencemag.org/content/6/29/eaba4174.abstract AB Magnetic levitational bioassembly of three-dimensional (3D) tissue constructs represents a rapidly emerging scaffold- and label-free approach and alternative conceptual advance in tissue engineering. The magnetic bioassembler has been designed, developed, and certified for life space research. To the best of our knowledge, 3D tissue constructs have been biofabricated for the first time in space under microgravity from tissue spheroids consisting of human chondrocytes. Bioassembly and sequential tissue spheroid fusion presented a good agreement with developed predictive mathematical models and computer simulations. Tissue constructs demonstrated good viability and advanced stages of tissue spheroid fusion process. Thus, our data strongly suggest that scaffold-free formative biofabrication using magnetic fields is a feasible alternative to traditional scaffold-based approaches, hinting a new perspective avenue of research that could significantly advance tissue engineering. Magnetic levitational bioassembly in space can also advance space life science and space regenerative medicine.