摘要
Three-dimensional(3D)cell spheroids,generated utilizing the self-organizing properties of mammalian cells,exhibit significant advantages and hold important value in simulating tissue complexity.However,they still encounter numerous limitations,including the absence of spatial anisotropy in cell spheroids,which can compromise their reliability in numerous preclinical drug tests.This study utilizes two-photon polymerization(TPP)3D printing technology,drawing inspiration from common liquid transport structures in nature,to design a microstructure featuring periodic parallel microcavities and wedge angles.This design enables unilateral immobilization and capillary rise of soft condensed matter.This structure facilitates the directed migration of 3D cell spheroids through the physical properties of the structure itself in static culture.Consequently,the original 3D cultured cell spheroids can acquire unique anisotropy within the spatial structure in a static culture environment,presenting a novel perspective for constructing biological constructs and cultivating connections between various cell spheroids,such as organoids.
基金
supported by the National Natural Science Foundation of China(Grant Nos.T2350007 and 12174041)
the Natural Science Foundation of Chongqing(Grant No.CSTB2024NSCQ-MSX0596)
the Science and Technology Research Program of Chongqing Municipal Education Commission(Grant No.KJZD-K202401306)
the Scientific Research Fund of Chongqing University of Arts and Sciences(Grant Nos.R2023HH03 and P2022HH05)。
