A basic study on self-reconstitution of alveolar epithelium-like cells by tissue stem cells in mouse lung

In Vitro Cellular & Developmental Biology. Animal
Masamichi HayashiKazuyoshi Imaizumi

Abstract

In recent research on regenerative medicine, three-dimensional (3D) tissue reconstruction using the induced pluripotent stem cell (iPS cell) differentiated cells has attracted attention. In this study, mouse lungs at 1.5, 10, and 20 d old were subjected to enzyme treatment, and aggregates formed in serum-free suspension culture (3D-culture) were observed. The number of aggregates formed was the highest in 1.5 d. The cell aggregates in which the interior of the aggregate is filled and form small vacuoles and the organoid-like aggregates having a relatively large vacuole inside and forming the alveolar-like structure were observed. At 1.5 d, the formation ratio of the organoid-like aggregates was the highest and aggregate size was small at 20 d. For the cell aggregates derived from 1.5 d, positive cells of SSEA-1, CD29, CD90, CD105, alveolar epithelial stem cell marker of SP-C, and Sca-1 were observed in the center. In the cell aggregates derived from 10 d, the expression level of 1.5 d each protein markers and OCT4 gene of transcription factor was decreased, and furthermore, markers were hardly observed in the organoid-like aggregates derived from 10 d. In addition, cells surrounding the vacuole of organoid-like aggregate obtain...Continue Reading

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Citations

Aug 24, 2021·Interactive Cardiovascular and Thoracic Surgery·Yuki ItoIchiro Yoshino

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