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α-Conotoxin TxID and [S9K]TxID, α3β4 NAChR Antagonists, Attenuate Expression and Reinstatement of Nicotine-Induced Conditioned Place Preference in Mice

Overview
Journal Mar Drugs
Publisher MDPI
Specialties Biology
Pharmacology
Date 2020 Dec 19
PMID 33339145
Citations 2
Authors
Affiliations
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Abstract

Tobacco smoking has become a prominent health problem faced around the world. The α3β4 nicotinic acetylcholine receptor (nAChR) is strongly associated with nicotine reward and withdrawal symptom. α-Conotoxin TxID, cloned from Conus textile, is a strong α3β4 nAChR antagonist, which has weak inhibition activity of α6/α3β4 nAChR. Meanwhile, its analogue [S9K]TxID only inhibits α3β4 nAChR (IC = 6.9 nM), and has no inhibitory activity to other nAChRs. The present experiment investigates the effect of α3β4 nAChR antagonists (TxID and [S9K]TxID) on the expression and reinstatement of nicotine-induced conditioned place preference (CPP) and explores the behaviors of acute nicotine in mice. The animal experimental results showed that TxID and [S9K] TxID could inhibit the expression and reinstatement of CPP, respectively. Moreover, both had no effect in acute nicotine experiment and the locomotor activity in mice. Therefore, these findings reveal that the α3β4 nAChR may be a potential target for anti-nicotine addiction treatment. [S9K]TxID, α3β4 nAChR antagonist, exhibit a superior effect for anti-nicotine addiction, which is promising to develop a novel smoking cessation drug.

Citing Articles

What We Have Gained from Ibogaine: α3β4 Nicotinic Acetylcholine Receptor Inhibitors as Treatments for Substance Use Disorders.

Straub C, Rusali L, Kremiller K, Riley A J Med Chem. 2022; 66(1):107-121.

PMID: 36440853 PMC: 10034762. DOI: 10.1021/acs.jmedchem.2c01562.


Fluorescently Labeled α-Conotoxin TxID, a New Probe for α3β4 Neuronal Nicotinic Acetylcholine Receptors.

Huang M, Zhu X, Yang Y, Tan Y, Luo S, Zhangsun D Mar Drugs. 2022; 20(8).

PMID: 36005514 PMC: 9410468. DOI: 10.3390/md20080511.

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