Aza-SAHA Derivatives are Selective Histone Deacetylase 10 Chemical Probes That Inhibit Polyamine Deacetylation and Phenocopy HDAC10 Knockout
We report the first well-characterized selective chemical probe for histone deacetylase 10 (HDAC10) with unprecedented selectivity over other HDAC isozymes. HDAC10 deacetylates polyamines and has a distinct substrate specificity, making it unique among the 11 zinc-dependent HDAC hydrolases. Taking inspiration from HDAC10 polyamine substrates, we systematically inserted an amino group (“aza-scan”) into the hexyl linker moiety of the approved drug Vorinostat (SAHA). This one atom replacement (C-->N) transformed SAHA from an unselective pan-HDAC inhibitor into a specific HDAC10 inhibitor. Optimization of the aza-SAHA structure yielded the HDAC10 chemical probe DKFZ-748, with potency and selectivity demonstrated by cellular and biochemical target-engagement, as well as thermal-shift, assays. Co-crystal structures of our aza-SAHA derivatives with HDAC10 provide a structural rationale for potency, and chemoproteomic profiling con-firmed cellular HDAC10-selectivity of DKFZ-748 across the target landscape of HDAC drugs. Treatment of cells with DKFZ-748, followed by quantification of selected polyamines, confirmed for the first time the suspected cellular function of HDAC10 as a polyamine deacetylase. Finally, in a polyamine-limited in vitro tumor model, DKFZ-748 showed dose-dependent growth inhibition of HeLa cells. We expect DKFZ-748 and related probes to enable further studies on the enigmatic biology of HDAC10 and acetylated polyamines in both physiological and pathological settings..
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Preprint| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
chemRxiv.org - (2023) vom: 10. Mai Zur Gesamtaufnahme - year:2023 |
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| Sprache: |
Englisch |
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| Beteiligte Personen: |
Steimbach, Raphael R. [VerfasserIn] |
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| Links: |
Volltext [kostenfrei] |
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| doi: |
10.26434/chemrxiv-2021-37shs-v2 |
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| 520 | |a We report the first well-characterized selective chemical probe for histone deacetylase 10 (HDAC10) with unprecedented selectivity over other HDAC isozymes. HDAC10 deacetylates polyamines and has a distinct substrate specificity, making it unique among the 11 zinc-dependent HDAC hydrolases. Taking inspiration from HDAC10 polyamine substrates, we systematically inserted an amino group (“aza-scan”) into the hexyl linker moiety of the approved drug Vorinostat (SAHA). This one atom replacement (C-->N) transformed SAHA from an unselective pan-HDAC inhibitor into a specific HDAC10 inhibitor. Optimization of the aza-SAHA structure yielded the HDAC10 chemical probe DKFZ-748, with potency and selectivity demonstrated by cellular and biochemical target-engagement, as well as thermal-shift, assays. Co-crystal structures of our aza-SAHA derivatives with HDAC10 provide a structural rationale for potency, and chemoproteomic profiling con-firmed cellular HDAC10-selectivity of DKFZ-748 across the target landscape of HDAC drugs. Treatment of cells with DKFZ-748, followed by quantification of selected polyamines, confirmed for the first time the suspected cellular function of HDAC10 as a polyamine deacetylase. Finally, in a polyamine-limited in vitro tumor model, DKFZ-748 showed dose-dependent growth inhibition of HeLa cells. We expect DKFZ-748 and related probes to enable further studies on the enigmatic biology of HDAC10 and acetylated polyamines in both physiological and pathological settings. | ||
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| 700 | 1 | |a Stewart, Tracy Murray |4 aut | |
| 700 | 1 | |a Klinke, Glynis |4 aut | |
| 700 | 1 | |a Ridinger, Johannes |4 aut | |
| 700 | 1 | |a Géraldy, Magalie |4 aut | |
| 700 | 1 | |a Tihanyi, Gergely |4 aut | |
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| 700 | 1 | |a Uhrig, Ulrike |4 aut | |
| 700 | 1 | |a Kuster, Bernhard |4 aut | |
| 700 | 1 | |a Poschet, Gernot |4 aut | |
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