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. 2024 Oct 17;300(11):107898. doi: 10.1016/j.jbc.2024.107898

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© 2024 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

A model for the transcriptional regulation of the TcEH and TcEHL genes. The TcEH and TcEHL of Tribolium castaneum have different transcriptional regulatory mechanisms during eclosion. 20E affects the expression of TcEH and TcEHL by regulating the transcriptional activity of the transcription factors TcSlbo and TcCAD, respectively. Decreased expression of both TcEH and TcEHL reduces the levels of the second messenger cGMP, which affects eclosion and 20E pathway gene expression, ultimately altering insect eclosion and adult lifespan.