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Heo H, Jo J, Jung JI, Han YM, Lee S, Kim SR, Kwon SH, Kim KN, Hwang BJ, Kee Y, Lee BD, Kang D, Her S. Improved dynamic monitoring of transcriptional activity during longitudinal analysis in the mouse brain. Biol Open 2019; 8:bio.037168. [PMID: 30341106 PMCID: PMC6361206 DOI: 10.1242/bio.037168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Bioluminescence imaging has proven to be a highly sensitive technique for assessing in vitro transcriptional activity toward understanding gene regulation patterns; however, application of this technique is limited for brain research. In particular, the poor spatiotemporal resolution is a major hurdle for monitoring the dynamic changes of transcriptional activity in specific regions of the brain during longitudinal analysis of living animals. To overcome this limitation, in this study, we modified a lentivirus-based luciferase glucocorticoid receptor (GR) reporter by inserting destabilizing sequence genes, and then the reporter was stereotaxically injected in the mouse infralimbic prefrontal cortex (IL-PFC). Using this strategy, we could successfully pin-point and monitor the dynamic changes in GR activity in IL-PFC during normal stress adaptation. The modified reporter showed a 1.5-fold increase in temporal resolution for monitoring GR activity compared to the control, with respect to the intra-individual coefficients of variation. This novel in vivo method has broad applications, as it is readily adaptable to different types of transcription factor arrays as well spanning wide target regions of the brain to other organs and tissues.
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Affiliation(s)
- Hwon Heo
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, South Korea
| | - Juyeong Jo
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, South Korea.,Department of Life Science, Ewha Womans University, Seoul 03760, South Korea
| | - Jae In Jung
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, South Korea
| | - Young-Min Han
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, South Korea
| | - Seongsoo Lee
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, South Korea
| | - Song Rae Kim
- Chuncheon Center, Korea Basic Science Institute, Chuncheon 24341, South Korea
| | - Seung-Hae Kwon
- Chuncheon Center, Korea Basic Science Institute, Chuncheon 24341, South Korea
| | - Kil-Nam Kim
- Chuncheon Center, Korea Basic Science Institute, Chuncheon 24341, South Korea
| | - Byung Joon Hwang
- Department of Molecular Bioscience, College of Biomedical Science, Kangwon National University, Chuncheon 24341, South Korea
| | - Yun Kee
- Division of Biomedical Convergence, College of Biomedical Science, Kangwon National University, Chuncheon 24341, South Korea
| | - Byoung Dae Lee
- Department of Physiology, School of Medicine, Kyung Hee University, Seoul, 02447, South Korea
| | - Dongmin Kang
- Department of Life Science, Ewha Womans University, Seoul 03760, South Korea
| | - Song Her
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, South Korea
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