SUMO suppresses and MYC amplifies transcription globally by regulating CDK9 sumoylation

Fang Yu, Guang Shi, Shimeng Cheng, Jiwei Chen, Shwu Yuan Wu, Zhiqiang Wang, Nansong Xia, Yunhao Zhai, Zhenxing Wang, Yu Peng, Dong Wang, James X. Du, Lujian Liao, Sheng Zhong Duan, Tieliu Shi, Jinke Cheng, Cheng Ming Chiang, Jiwen Li, Jiemin Wong

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Regulation of transcription is fundamental to the control of cellular gene expression and function. Although recent studies have revealed a role for the oncoprotein MYC in amplifying global transcription, little is known as to how the global transcription is suppressed. Here we report that SUMO and MYC mediate opposite effects upon global transcription by controlling the level of CDK9 sumoylation. On one hand, SUMO suppresses global transcription via sumoylation of CDK9, the catalytic subunit of P-TEFb kinase essential for productive transcriptional elongation. On the other hand, MYC amplifies global transcription by antagonizing CDK9 sumoylation. Sumoylation of CDK9 blocks its interaction with Cyclin T1 and thus the formation of active P-TEFb complex. Transcription profiling analyses reveal that SUMO represses global transcription, particularly of moderately to highly expressed genes and by generating a sumoylation-resistant CDK9 mutant, we confirm that sumoylation of CDK9 inhibits global transcription. Together, our data reveal that SUMO and MYC oppositely control global gene expression by regulating the dynamic sumoylation and desumoylation of CDK9.

Original languageEnglish (US)
Pages (from-to)670-685
Number of pages16
JournalCell Research
Volume28
Issue number6
DOIs
StatePublished - Jun 1 2018

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Sumoylation
Positive Transcriptional Elongation Factor B
Cyclin T
Gene Expression
Oncogene Proteins
Catalytic Domain
Phosphotransferases

ASJC Scopus subject areas

  • Molecular Biology
  • Cell Biology

Cite this

SUMO suppresses and MYC amplifies transcription globally by regulating CDK9 sumoylation. / Yu, Fang; Shi, Guang; Cheng, Shimeng; Chen, Jiwei; Wu, Shwu Yuan; Wang, Zhiqiang; Xia, Nansong; Zhai, Yunhao; Wang, Zhenxing; Peng, Yu; Wang, Dong; Du, James X.; Liao, Lujian; Duan, Sheng Zhong; Shi, Tieliu; Cheng, Jinke; Chiang, Cheng Ming; Li, Jiwen; Wong, Jiemin.

In: Cell Research, Vol. 28, No. 6, 01.06.2018, p. 670-685.

Research output: Contribution to journalArticle

Yu, F, Shi, G, Cheng, S, Chen, J, Wu, SY, Wang, Z, Xia, N, Zhai, Y, Wang, Z, Peng, Y, Wang, D, Du, JX, Liao, L, Duan, SZ, Shi, T, Cheng, J, Chiang, CM, Li, J & Wong, J 2018, 'SUMO suppresses and MYC amplifies transcription globally by regulating CDK9 sumoylation', Cell Research, vol. 28, no. 6, pp. 670-685. https://doi.org/10.1038/s41422-018-0023-9
Yu, Fang ; Shi, Guang ; Cheng, Shimeng ; Chen, Jiwei ; Wu, Shwu Yuan ; Wang, Zhiqiang ; Xia, Nansong ; Zhai, Yunhao ; Wang, Zhenxing ; Peng, Yu ; Wang, Dong ; Du, James X. ; Liao, Lujian ; Duan, Sheng Zhong ; Shi, Tieliu ; Cheng, Jinke ; Chiang, Cheng Ming ; Li, Jiwen ; Wong, Jiemin. / SUMO suppresses and MYC amplifies transcription globally by regulating CDK9 sumoylation. In: Cell Research. 2018 ; Vol. 28, No. 6. pp. 670-685.
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AB - Regulation of transcription is fundamental to the control of cellular gene expression and function. Although recent studies have revealed a role for the oncoprotein MYC in amplifying global transcription, little is known as to how the global transcription is suppressed. Here we report that SUMO and MYC mediate opposite effects upon global transcription by controlling the level of CDK9 sumoylation. On one hand, SUMO suppresses global transcription via sumoylation of CDK9, the catalytic subunit of P-TEFb kinase essential for productive transcriptional elongation. On the other hand, MYC amplifies global transcription by antagonizing CDK9 sumoylation. Sumoylation of CDK9 blocks its interaction with Cyclin T1 and thus the formation of active P-TEFb complex. Transcription profiling analyses reveal that SUMO represses global transcription, particularly of moderately to highly expressed genes and by generating a sumoylation-resistant CDK9 mutant, we confirm that sumoylation of CDK9 inhibits global transcription. Together, our data reveal that SUMO and MYC oppositely control global gene expression by regulating the dynamic sumoylation and desumoylation of CDK9.

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