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A Photo‐responsive Small‐Molecule Approach for the Opto‐epigenetic Modulation of DNA Methylation

Nguyen, Ha Phuong ; Stewart, Sabrina ; Kukwikila, Mikiembo N. ; Jones, Sioned Fôn ; Offenbartl‐Stiegert, Daniel ; Mao, Shiqing ; Balasubramanian, Shankar ; Beck, Stephan ; Howorka, Stefan

Angewandte Chemie, 13 May 2019, Vol.131(20), pp.6692-6696 [Peer Reviewed Journal]

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  • Title:
    A Photo‐responsive Small‐Molecule Approach for the Opto‐epigenetic Modulation of DNA Methylation
  • Author: Nguyen, Ha Phuong ; Stewart, Sabrina ; Kukwikila, Mikiembo N. ; Jones, Sioned Fôn ; Offenbartl‐Stiegert, Daniel ; Mao, Shiqing ; Balasubramanian, Shankar ; Beck, Stephan ; Howorka, Stefan
  • Subjects: Cytosin ; Dna ; Epigenetik ; Methylierung ; Photokäfige
  • Is Part Of: Angewandte Chemie, 13 May 2019, Vol.131(20), pp.6692-6696
  • Description: Controlling the functional dynamics of DNA within living cells is essential in biomedical research. Epigenetic modifications such as DNA methylation play a key role in this endeavour. DNA methylation can be controlled by genetic means. Yet there are few chemical tools available for the spatial and temporal modulation of this modification. Herein, we present a small‐molecule approach to modulate DNA methylation with light. The strategy uses a photo‐tuneable version of a clinically used drug (5‐aza‐2′‐deoxycytidine) to alter the catalytic activity of DNA methyltransferases, the enzymes that methylate DNA. After uptake by cells, the photo‐regulated molecule can be light‐controlled to reduce genome‐wide DNA methylation levels in proliferating cells. The chemical tool complements genetic, biochemical, and pharmacological approaches to study the role of DNA methylation in biology and medicine. zur Modulierung der DNA‐Methylierung durch Licht wird vorgestellt. Eine photochemisch justierbare Version des klinischen Wirkstoffs 5‐Aza‐2′‐deoxycytidin wird dabei genutzt, um die katalytische Aktivität der DNA‐Methyltransferase zu modifizieren. Nach Aufnahme durch die Zellen kann das photoregulierte Molekül durch Lichteinstrahlung die genomweiten DNA‐Methylierungsniveaus in proliferierenden Zellen reduzieren.
  • Language: English
  • Identifier: ISSN: 0044-8249 ; E-ISSN: 1521-3757 ; DOI: 10.1002/ange.201901139

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