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Peptides from the Sea Anemone Metridium senile with Modified Inhibitor Cystine Knot (ICK) Fold Inhibit Nicotinic Acetylcholine Receptors.
Kasheverov, Igor E; Logashina, Yulia A; Kornilov, Fedor D; Lushpa, Vladislav A; Maleeva, Ekaterina E; Korolkova, Yuliya V; Yu, Jinpeng; Zhu, Xiaopeng; Zhangsun, Dongting; Luo, Sulan; Stensvåg, Klara; Kudryavtsev, Denis S; Mineev, Konstantin S; Andreev, Yaroslav A.
Affiliation
  • Kasheverov IE; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, str. Miklukho-Maklaya 16/10, 117997 Moscow, Russia.
  • Logashina YA; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, str. Miklukho-Maklaya 16/10, 117997 Moscow, Russia.
  • Kornilov FD; Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Trubetskaya str. 8, bld. 2, 119991 Moscow, Russia.
  • Lushpa VA; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, str. Miklukho-Maklaya 16/10, 117997 Moscow, Russia.
  • Maleeva EE; Moscow Institute of Physics and Technology, Institutsky per., 9, 141700 Dolgoprudnyi, Russia.
  • Korolkova YV; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, str. Miklukho-Maklaya 16/10, 117997 Moscow, Russia.
  • Yu J; Moscow Institute of Physics and Technology, Institutsky per., 9, 141700 Dolgoprudnyi, Russia.
  • Zhu X; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, str. Miklukho-Maklaya 16/10, 117997 Moscow, Russia.
  • Zhangsun D; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, str. Miklukho-Maklaya 16/10, 117997 Moscow, Russia.
  • Luo S; Medical School, Guangxi University, Nanning 530004, China.
  • Stensvåg K; Medical School, Guangxi University, Nanning 530004, China.
  • Kudryavtsev DS; Medical School, Guangxi University, Nanning 530004, China.
  • Mineev KS; Medical School, Guangxi University, Nanning 530004, China.
  • Andreev YA; Faculty of Biosciences, Fisheries and Economics, Norwegian College of Fishery Science, UiT-The Arctic University of Norway, NO 9037 Tromsø, Norway.
Toxins (Basel) ; 15(1)2022 12 30.
Article in En | MEDLINE | ID: mdl-36668848
ABSTRACT
Nicotinic acetylcholine receptors (nAChRs) play an important role in the functioning of the central and peripheral nervous systems, and other organs of living creatures. There are several subtypes of nAChRs, and almost all of them are considered as pharmacological targets in different pathological states. The crude venom of the sea anemone Metridium senile showed the ability to interact with nAChRs. Four novel peptides (Ms11a-1-Ms11a-4) with nAChR binding activity were isolated. These peptides stabilized by three disulfide bridges have no noticeable homology with any known peptides. Ms11a-1-Ms11a-4 showed different binding activity towards the muscle-type nAChR from the Torpedo californica ray. The study of functional activity and selectivity for the most potent peptide (Ms11a-3) revealed the highest antagonism towards the heterologous rat α9α10 nAChR compared to the muscle and α7 receptors. Structural NMR analysis of two toxins (Ms11a-2 and Ms11a-3) showed that they belong to a new variant of the inhibitor cystine knot (ICK) fold but have a prolonged loop between the fifth and sixth cysteine residues. Peptides Ms11a-1-Ms11a-4 could represent new pharmacological tools since they have structures different from other known nAChRs inhibitors.
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Full text: 1 Database: MEDLINE Main subject: Peptides / Sea Anemones / Receptors, Nicotinic / Nicotinic Antagonists Limits: Animals Language: En Year: 2022 Type: Article
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Full text: 1 Database: MEDLINE Main subject: Peptides / Sea Anemones / Receptors, Nicotinic / Nicotinic Antagonists Limits: Animals Language: En Year: 2022 Type: Article