Distinctive Biological Properties between Mesenchymal Stem Cell Spheroids and Clumps of Mesenchymal Stem Cells/Extracellular Matrix Complexes in 3D Culture Systems

Autor: Mai Yoshino, Mikihito Kajiya, Hiroki Yoshii, Shin Morimoto, Susumu Horikoshi, Misako Tari, Tomoyuki Iwata, Kazuhisa Ouhara, Toshinori Ando, Tetsuya Yoshimoto, Tomoaki Shintani, Noriyoshi Mizuno
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Applied Sciences, Vol 13, Iss 23, p 12790 (2023)
Druh dokumentu: article
ISSN: 2076-3417
DOI: 10.3390/app132312790
Popis: Background: Cells typically function and behave within a three-dimensional (3D) environment. Mesenchymal stem cells (MSCs), known for their self-renewal, multi-lineage differentiation capabilities, and paracrine effects, have garnered significant medical interest. MSC spheroid culture is widely adopted to study the biological properties of MSCs in a 3D context. In contrast, we previously developed 3D clumps of MSC/ECM complexes termed C-MSCs. C-MSCs consisted of cells and self-produced ECM proteins, allowing grafting into tissue defects without any artificial scaffolds. This present study aimed to elucidate the fundamental biological distinctions between 3D MSC spheroids and C-MSCs. Methods: MSC spheroids and C-MSCs are generated from human bone-marrow-derived MSCs. The physical properties, histological structures, and gene expression patterns were compared in vitro. Results: Macroscopic and histological examinations revealed that, whereas MSC spheroids are dense cell clusters primarily formed through Cadherin-mediated cell–cell interactions, C-MSCs are cell aggregates anchored by the ECM component COL1, enabling them to form larger structures. Furthermore, transcriptome analysis showed that C-MSCs possess enhanced capacities to produce immunomodulatory and cytoprotective factors, a prominent biological characteristic of MSCs. Conclusion: Recognizing the distinct attributes of each cell aggregate offers insights into the potential evolution of 3D cell culture techniques and possible therapeutic implications.
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