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Int. J. Mol. Sci. 2019, 20(8), 1843;

Regulation Mechanism of MYC Family Transcription Factors in Jasmonic Acid Signalling Pathway on Taxol Biosynthesis

Department of Chemical Engineering, Institute of Biochemical Engineering, Tsinghua University, Beijing 100084, China
Author to whom correspondence should be addressed.
Received: 19 February 2019 / Revised: 16 March 2019 / Accepted: 8 April 2019 / Published: 14 April 2019
(This article belongs to the Special Issue Recent Progress of Molecular Mechanism of Gene Expression)
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Paclitaxel is an important anticancer drug. The phytohormone jasmonic acid can significantly induce the biosynthesis of paclitaxel in Taxus, but the molecular mechanism has not yet been resolved. To establish the jasmonic acid signalling pathway of Taxus media, based on the gene of the jasmonic acid signalling pathway of Arabidopsis thaliana, sequence analysis was performed to isolate the jasmonic acid signal from the transcriptome, a transcriptional cluster of pathway gene homologs and the full length of 22 genes were obtained by RACE PCR at 5′ and 3′: two EI ubiquitin ligase genes, COI1-1 and COI1-2;7 MYC bHLH type transcription factor (MYC2, MYC3, MYC4, JAM1, JAM2, EGL3, TT8); 12 JAZ genes containing the ZIM domain; and MED25, one of the components of the transcriptional complex. The protein interaction between each were confirmed by yeast two hybridization and bimolecular fluorescence complementation based on similar genes interaction in Arabidopsis. A similar jasmonate signaling pathway was illustrated in T. media. All known paclitaxel biosynthesis genes promoters were isolated by genome walker PCR. To investigate the jasmonate signaling effect on these genes’ expression, the transcription activity of MYC2, MYC3 and MYC4 on these promoters were examined. There are 12, 10 and 11 paclitaxel biosynthesis genes promoters that could be activated by MYC2, MYC3 and MYC4. View Full-Text
Keywords: jasmonate signalling; MYC transcription factors; taxol biosynthesis jasmonate signalling; MYC transcription factors; taxol biosynthesis

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Cui, Y.; Mao, R.; Chen, J.; Guo, Z. Regulation Mechanism of MYC Family Transcription Factors in Jasmonic Acid Signalling Pathway on Taxol Biosynthesis. Int. J. Mol. Sci. 2019, 20, 1843.

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