T-type calcium channels inhibitors: a patent review

Expert Opin Ther Pat. 2011 Jan;21(1):85-101. doi: 10.1517/13543776.2011.536532. Epub 2010 Nov 19.

Abstract

Importance of the field: T-type calcium channels are transmembrane proteins that regulate calcium entry in the cell in a voltage-dependent manner. Intracellular calcium levels are the key to many physiological processes, ranging from neuron firing to cardiac pacemaking. Inhibition of T-type calcium channels is heralded as a potential treatment to peripheral and CNS disorders, including hypertension, heart failure, sleep, epilepsy, drug addiction and neuropathic pain.

Areas covered in this review: A comprehensive summary of patent literature disclosing T-type calcium channels inhibitors is provided.

What the reader will gain: In all, 46 patent applications including 15 chemical structure classes are reviewed. Available in vitro, in vivo and clinical results are also discussed.

Take home message: Several selective T-type calcium channels inhibitors with demonstrated in vitro and in vivo effects, including one Phase I clinical candidate, are now available. While future clinical results will be paramount to assess target validity in patients, these novel inhibitors represent excellent tools to further investigate the role of T-type channels in pathophysiological conditions.

Publication types

  • Review

MeSH terms

  • Animals
  • Calcium / metabolism
  • Calcium Channel Blockers / pharmacology*
  • Calcium Channels, T-Type / drug effects*
  • Calcium Channels, T-Type / metabolism
  • Drug Delivery Systems*
  • Drug Design
  • Humans
  • Patents as Topic

Substances

  • Calcium Channel Blockers
  • Calcium Channels, T-Type
  • Calcium