Novel regulation pathway of eclosion hormones in Tribolium castaneum by distinct transcription factors through the initiation of 20-hydroxyecdysone.

Autor:	Zhou H; College of Life Sciences, Nanjing Normal University, Nanjing, China., Lei G; Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou, China., Li Y; College of Life Sciences, Nanjing Normal University, Nanjing, China., Chen P; College of Life Sciences, Nanjing Normal University, Nanjing, China., Liu Z; College of Life Sciences, Nanjing Normal University, Nanjing, China., Li C; College of Life Sciences, Nanjing Normal University, Nanjing, China., Li B; College of Life Sciences, Nanjing Normal University, Nanjing, China. Electronic address: libin@njnu.edu.cn.
Jazyk:	angličtina
Zdroj:	The Journal of biological chemistry [J Biol Chem] 2024 Nov; Vol. 300 (11), pp. 107898. Date of Electronic Publication: 2024 Oct 17.
DOI:	10.1016/j.jbc.2024.107898
Abstrakt:	Eclosion hormone (EH) is not only a key trigger of insect ecdysis, but is also involved in the regulation of important physiological processes such as development, diapause, metamorphosis, and reproduction. EH is an ideal target for RNAi treatment and prevention of the Tribolium castaneum. However, two EH genes in T. castaneum demonstrate distinct replication and functional conversion relationships, and the mechanisms of transcriptional regulation of EH remain largely unexplored and poorly understood. In this study, the activity of highly active promoter fragments and potential transcription factors of TcEH and TcEHL were identified using the Dual-Luciferase reporter system and TANSFAC. TcSlbo and TcCAD were revealed to be important transcription factors for TcEH and TcEHL, respectively. Knockdown of TcSlbo failed to slough off the old epidermis of T. castaneum and prevented them from developing into adults. Furthermore, we demonstrated for the first time that 20-hydroxyecdysone affects the expression of TcEH and TcEHL by regulating the transcriptional activities of TcSlbo and TcCAD. This study provides new insights into the transcription regulation of TcEH and TcEHL, their roles in insect growth and development, and the involvement of 20-hydroxyecdysone in eclosion regulation, offering potential molecular targets for future pest management strategies. Competing Interests: Conflict of interest The authors declare that they have no conflicts of interest with the contents of this article. (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
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