Zinc binding groups for histone deacetylase inhibitors

Area of Science:

• Medicinal Chemistry
• Pharmacology
• Biochemistry

Background:

• Histone deacetylase inhibitors (HDACIs) are crucial therapeutics targeting histone deacetylases (HDACs).
• The potency of HDACIs is determined by zinc binding groups (ZBGs) that target the HDAC active site.
• Hydroxamic acid is a common ZBG due to its high affinity for zinc ions.

Purpose of the Study:

• To review various zinc binding groups (ZBGs) used in histone deacetylase inhibitors (HDACIs).
• To discuss the features of different ZBGs for improving HDACI activity and selectivity.
• To explore ZBGs for overcoming pharmacokinetic limitations of current HDACIs.

Main Methods:

• Literature review of existing research on ZBGs in HDACIs.
• Analysis of structural features and properties of different ZBGs.
• Discussion of the impact of ZBGs on HDACI potency, selectivity, and pharmacokinetics.

Main Results:

• Hydroxamic acid is a widely used ZBG with high zinc affinity.
• Benzamide groups offer excellent selectivity for class I HDACs.
• Various ZBGs have been designed and tested to enhance HDACI efficacy.

Conclusions:

• ZBGs are critical for the design and efficacy of HDACIs.
• Understanding ZBG features is essential for developing improved HDACIs with better activity and pharmacokinetic profiles.
• Further exploration of novel ZBGs holds promise for advancing HDACI-based therapies.