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Exploring the Arginine Methylome by Nuclear Magnetic Resonance Spectroscopy
Published on: December 16, 2021
Protein arginine-methyltransferase-dependent oncogenesis
Ngai Cheung1, Li Chong Chan, Alex Thompson
1Haemato-Oncology Section, The Institute of Cancer Research, Sutton, Greater London SM2 5NG, UK.
Nature Cell Biology
|September 25, 2007
Summary
Protein arginine methyltransferase 1 (PRMT1) is crucial in Mixed Lineage Leukaemia (MLL) oncogenesis. Targeting PRMT1 and Sam68 may offer new cancer therapies by disrupting MLL fusion complex activity.
Area of Science:
- Epigenetics
- Molecular Biology
- Oncology
Background:
- Reversible epigenetic modifications regulate gene expression and oncogenesis.
- Histone methylation by PRMT1 is vital for active chromatin.
- The role of PRMTs in cancer remained unclear.
Purpose of the Study:
- To investigate the role of PRMT1 in Mixed Lineage Leukaemia (MLL) oncogenesis.
- To identify components of the MLL oncogenic transcriptional complex.
- To explore PRMTs as potential therapeutic targets in cancer.
Main Methods:
- Analysis of PRMT1 within MLL oncogenic transcriptional complexes.
- Assessing the impact of MLL-PRMT1/Sam68 fusion on hematopoietic cell self-renewal.
- Evaluating the effect of PRMT1/Sam68 knockdown on MLL-mediated transformation.
Main Results:
- PRMT1 is an essential component of a novel MLL oncogenic transcriptional complex.
- This complex exhibits both histone acetylation and H4R3 methylation activities.
- MLL fusion with PRMT1 or Sam68 enhances hematopoietic cell self-renewal, while knockdown suppresses MLL transformation.
Conclusions:
- PRMT1 plays an essential function in oncogenesis via the MLL fusion complex.
- PRMTs are identified as novel therapeutic targets for human cancers.
- This study dissects the oncogenic transcriptional machinery associated with MLL fusion.
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