| Title : Ligand design for human acetylcholinesterase and nicotinic acetylcholine receptors, extending beyond the conventional and canonical - Taylor_2021_J.Neurochem__ |
| Author(s) : Taylor P , Shong YJ , Samskey N , Ho KY , Radic Z , Fenical W , Sharpless KB , Kovarik Z , Andrea Camacho-Hernandez G |
| Ref : Journal of Neurochemistry , : , 2021 |
| Abstract : We detail here distinctive departures from lead classical cholinesterase reactivators, the pyridinium aldoximes, to achieve rapid CNS penetration and reactivation of AChE in the CNS (brain and spinal cord). Such reactivation is consistent with these non-canonical reactivators enhancing survival parameters in both mice and macaques following exposure to organophosphates. Thus, the ideal cholinesterase reactivator should show minimal toxicity, limited inhibitory activity in the absence of an organophosphate, and rapid CNS penetration, in addition to its nucleophilic potential at the target, the conjugated AChE active center. These are structural properties directed to reactivity profiles at the conjugated AChE active center, reinforced by the pharmacokinetic and tissue disposition properties of the reactivator leads. In the case of nicotinic acetylcholine receptor (nAChR) agonists and antagonists, with the many existing receptor subtypes in mammals, we prioritize subtype selectivity in their design. In contrast to nicotine and its analogues that react with panoply of AChR subtypes, the substituted di-2-picolyl amine pyrimidines possess distinctive ionization characteristics reflecting in selectivity for the orthosteric site at the alpha7 subtypes of receptor. Here entry to the CNS should be prioritized for the therapeutic objectives of the nicotinic agent influencing aberrant CNS activity in development or in the sequence of CNS ageing (longevity) in mammals, along with general peripheral activities controlling inflammation. |
| ESTHER : Taylor_2021_J.Neurochem__ |
| PubMedSearch : Taylor_2021_J.Neurochem__ |
| PubMedID: 33638151 |
Taylor P, Shong YJ, Samskey N, Ho KY, Radic Z, Fenical W, Sharpless KB, Kovarik Z, Andrea Camacho-Hernandez G (2021)
Ligand design for human acetylcholinesterase and nicotinic acetylcholine receptors, extending beyond the conventional and canonical
Journal of Neurochemistry
:
Taylor P, Shong YJ, Samskey N, Ho KY, Radic Z, Fenical W, Sharpless KB, Kovarik Z, Andrea Camacho-Hernandez G (2021)
Journal of Neurochemistry
: