Version 1
: Received: 31 May 2019 / Approved: 3 June 2019 / Online: 3 June 2019 (12:24:59 CEST)
How to cite:
Ikeda, H.; Muratani, M.; Hidema, J.; Hada, M.; Fujiwara, K.; Souda, H.; Yoshida, Y.; Takahashi, A. Expression Profile of Cell Cycle-related Genes in Human Fibroblasts Exposed Simultaneously to Radiation and Simulated Microgravity. Preprints2019, 2019060021. https://doi.org/10.20944/preprints201906.0021.v1
Ikeda, H.; Muratani, M.; Hidema, J.; Hada, M.; Fujiwara, K.; Souda, H.; Yoshida, Y.; Takahashi, A. Expression Profile of Cell Cycle-related Genes in Human Fibroblasts Exposed Simultaneously to Radiation and Simulated Microgravity. Preprints 2019, 2019060021. https://doi.org/10.20944/preprints201906.0021.v1
Ikeda, H.; Muratani, M.; Hidema, J.; Hada, M.; Fujiwara, K.; Souda, H.; Yoshida, Y.; Takahashi, A. Expression Profile of Cell Cycle-related Genes in Human Fibroblasts Exposed Simultaneously to Radiation and Simulated Microgravity. Preprints2019, 2019060021. https://doi.org/10.20944/preprints201906.0021.v1
APA Style
Ikeda, H., Muratani, M., Hidema, J., Hada, M., Fujiwara, K., Souda, H., Yoshida, Y., & Takahashi, A. (2019). Expression Profile of Cell Cycle-related Genes in Human Fibroblasts Exposed Simultaneously to Radiation and Simulated Microgravity. Preprints. https://doi.org/10.20944/preprints201906.0021.v1
Chicago/Turabian Style
Ikeda, H., Yukari Yoshida and Akihisa Takahashi. 2019 "Expression Profile of Cell Cycle-related Genes in Human Fibroblasts Exposed Simultaneously to Radiation and Simulated Microgravity" Preprints. https://doi.org/10.20944/preprints201906.0021.v1
Abstract
Multiple unique environmental factors such as space radiation and microgravity (µG) pose a serious threat to human gene stability during space travel. Recently, we reported that simultaneous exposure of human fibroblasts to simulated µG and radiation results in more chromosomal aberrations than in cells exposed to radiation alone. However, the mechanisms behind this remain unknown. The purpose of this study was thus to obtain comprehensive data on gene expression using a 3D clinostat synchronized to a carbon (C)-ion or X-ray irradiation system. Human fibroblasts (1BR-hTERT) were maintained under standing or rotating conditions for 3 or 24 h after synchronized C-ion or X-ray irradiation at 1 Gy as part of a total culture time of 2 days. Among 57,773 genes analyzed with RNA sequencing, we focused particularly on the expression of 82 cell cycle-related genes after exposure to the radiation and simulated µG. The expression of cell cycle-suppressing genes (ABL1 and CDKN1A) decreased and that of cell cycle-promoting genes (MKI67, KPNA2, CCNB1, STMN1, and MCM4) increased after C-ion irradiation under µG. The cell cycle may pass through the G1/S and G2 checkpoints with DNA damage due to the combined effects of C-ions and µG, suggesting that increased genomic instability might occur in space.
Biology and Life Sciences, Cell and Developmental Biology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
,
,
,
,
*
