Faculty of Physics and Earth System Science, Peter Debye Institute of Soft Matter Physics, Biological Physics Division, Leipzig University, 04103 Leipzig, Germany.
Cells. 2024 Oct 1;13(19):1638. doi: 10.3390/cells13191638.
The 3D bioprinting technique has made enormous progress in tissue engineering, regenerative medicine and research into diseases such as cancer. Apart from individual cells, a collection of cells, such as organoids, can be printed in combination with various hydrogels. It can be hypothesized that 3D bioprinting will even become a promising tool for mechanobiological analyses of cells, organoids and their matrix environments in highly defined and precisely structured 3D environments, in which the mechanical properties of the cell environment can be individually adjusted. Mechanical obstacles or bead markers can be integrated into bioprinted samples to analyze mechanical deformations and forces within these bioprinted constructs, such as 3D organoids, and to perform biophysical analysis in complex 3D systems, which are still not standard techniques. The review highlights the advances of 3D and 4D printing technologies in integrating mechanobiological cues so that the next step will be a detailed analysis of key future biophysical research directions in organoid generation for the development of disease model systems, tissue regeneration and drug testing from a biophysical perspective. Finally, the review highlights the combination of bioprinted hydrogels, such as pure natural or synthetic hydrogels and mixtures, with organoids, organoid-cell co-cultures, organ-on-a-chip systems and organoid-organ-on-a chip combinations and introduces the use of assembloids to determine the mutual interactions of different cell types and cell-matrix interferences in specific biological and mechanical environments.
3D 生物打印技术在组织工程、再生医学和癌症等疾病的研究中取得了巨大进展。除了单个细胞外,还可以将细胞集合,如类器官,与各种水凝胶组合进行打印。可以假设,3D 生物打印甚至将成为细胞、类器官及其基质环境在高度定义和精确结构的 3D 环境中的机械生物学分析的有前途的工具,其中细胞环境的机械性能可以单独调整。可以将机械障碍物或珠状标记物集成到生物打印的样品中,以分析这些生物打印结构内的机械变形和力,例如 3D 类器官,并在复杂的 3D 系统中进行生物物理分析,这些仍然不是标准技术。该综述强调了 3D 和 4D 打印技术在整合机械生物学线索方面的进展,以便下一步将从生物物理角度详细分析类器官生成、疾病模型系统开发、组织再生和药物测试方面的关键未来生物物理研究方向。最后,该综述强调了生物打印水凝胶(如纯天然或合成水凝胶及其混合物)与类器官、类器官-细胞共培养物、芯片上器官系统和类器官-芯片上器官组合的结合,并介绍了 assembloids 的使用,以确定不同细胞类型和细胞-基质相互作用在特定生物和机械环境中的相互作用。