Journal
CHEMICAL BIOLOGY & DRUG DESIGN
Volume 86, Issue 2, Pages 156-162Publisher
WILEY
DOI: 10.1111/cbdd.12479
Keywords
analgesic; Ca(V)2.2; conotoxin; multitarget ligands; opioid; pain
Funding
- OTKA, Budapest, Hungary [K108518]
- [TAMOP-4.2.2.A-11/1/KONV-2012-0024]
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N-type voltage-dependent Ca2+ channels (Ca(V)2.2) are located at nerve endings in the central and peripheral nervous systems and are strongly associated with the pathological processes of cerebral ischaemia and neuropathic pain. Ca(V)2.2 blockers such as the omega-conotoxin MVIIA (Prialt) are analgesic and have opioid-sparing effects. With the aim to develop new multitarget analgesic compounds, we designed the first omega-conotoxin/opioid peptidomimetics based on the enkephalin-like sequence Tyr-D-Ala-Gly-Phe (for the opioid portion) and two fragments derived from the loop-2 pharmacophore of omega-conotoxin MVIIA. Antinociceptive activity evaluated in vitro and in vivo revealed differential affinity for Ca(V)2.2 and opioid receptors and no significant synergistic activity.
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