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Kalinovskii AP, Pushkarev AP, Mikhailenko AD, Kudryavtsev DS, Belozerova OA, Shmygarev VI, Yatskin ON, Korolkova YV, Kozlov SA, Osmakov DI, Popov A, Andreev YA. Dual Modulator of ASIC Channels and GABA A Receptors from Thyme Alters Fear-Related Hippocampal Activity. Int J Mol Sci 2023; 24:13148. [PMID: 37685955 PMCID: PMC10487430 DOI: 10.3390/ijms241713148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023] Open
Abstract
Acid-sensing ion channels (ASICs) are proton-gated ion channels that mediate nociception in the peripheral nervous system and contribute to fear and learning in the central nervous system. Sevanol was reported previously as a naturally-occurring ASIC inhibitor from thyme with favorable analgesic and anti-inflammatory activity. Using electrophysiological methods, we found that in the high micromolar range, the compound effectively inhibited homomeric ASIC1a and, in sub- and low-micromolar ranges, positively modulated the currents of α1β2γ2 GABAA receptors. Next, we tested the compound in anxiety-related behavior models using a targeted delivery into the hippocampus with parallel electroencephalographic measurements. In the open field, 6 µM sevanol reduced both locomotor and θ-rhythmic activity similar to GABA, suggesting a primary action on the GABAergic system. At 300 μM, sevanol markedly suppressed passive avoidance behavior, implying alterations in conditioned fear memory. The observed effects could be linked to distinct mechanisms involving GABAAR and ASIC1a. These results elaborate the preclinical profile of sevanol as a candidate for drug development and support the role of ASIC channels in fear-related functions of the hippocampus.
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Affiliation(s)
- Aleksandr P. Kalinovskii
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia (D.S.K.); (O.A.B.); (S.A.K.); (A.P.); (Y.A.A.)
| | - Anton P. Pushkarev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia (D.S.K.); (O.A.B.); (S.A.K.); (A.P.); (Y.A.A.)
| | - Anastasia D. Mikhailenko
- Moscow State Academy of Veterinary Medicine and Biotechnology—MVA named after K.I. Skryabin, ul. Akademika Skryabina, 23, 109472 Moscow, Russia
| | - Denis S. Kudryavtsev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia (D.S.K.); (O.A.B.); (S.A.K.); (A.P.); (Y.A.A.)
| | - Olga A. Belozerova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia (D.S.K.); (O.A.B.); (S.A.K.); (A.P.); (Y.A.A.)
| | - Vladimir I. Shmygarev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia (D.S.K.); (O.A.B.); (S.A.K.); (A.P.); (Y.A.A.)
| | - Oleg N. Yatskin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia (D.S.K.); (O.A.B.); (S.A.K.); (A.P.); (Y.A.A.)
| | - Yuliya V. Korolkova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia (D.S.K.); (O.A.B.); (S.A.K.); (A.P.); (Y.A.A.)
| | - Sergey A. Kozlov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia (D.S.K.); (O.A.B.); (S.A.K.); (A.P.); (Y.A.A.)
| | - Dmitry I. Osmakov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia (D.S.K.); (O.A.B.); (S.A.K.); (A.P.); (Y.A.A.)
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Trubetskaya Str. 8, bld. 2, 119991 Moscow, Russia
| | - Alexander Popov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia (D.S.K.); (O.A.B.); (S.A.K.); (A.P.); (Y.A.A.)
| | - Yaroslav A. Andreev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia (D.S.K.); (O.A.B.); (S.A.K.); (A.P.); (Y.A.A.)
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Trubetskaya Str. 8, bld. 2, 119991 Moscow, Russia
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