O1-conotoxin Tx6.7 cloned from the genomic DNA of
Conus textile
Tx6.7
calcium currents
conotoxin
hCaV1.2
hCaV2.2
Journal
The journal of venomous animals and toxins including tropical diseases
ISSN: 1678-9199
Titre abrégé: J Venom Anim Toxins Incl Trop Dis
Pays: Brazil
ID NLM: 101201501
Informations de publication
Date de publication:
2023
2023
Historique:
received:
08
12
2022
accepted:
13
04
2023
medline:
7
6
2023
pubmed:
7
6
2023
entrez:
7
6
2023
Statut:
epublish
Résumé
Conotoxins exhibit great potential as neuropharmacology tools and therapeutic candidates due to their high affinity and specificity for ion channels, neurotransmitter receptors or transporters. The traditional methods to discover new conotoxins are peptide purification from the crude venom or gene amplification from the venom duct. In this study, a novel O1 superfamily conotoxin Tx6.7 was directly cloned from the genomic DNA of Patch clamp experiments on rat DRG neurons showed that Tx6.7 inhibited peak calcium currents by 59.29 ± 2.34% and peak potassium currents by 22.33 ± 7.81%. In addition, patch clamp on the ion channel subtypes showed that 10 μM Tx6.7 inhibited 56.61 ± 3.20% of the hCa Our results suggested that direct cloning of conotoxin sequences from the genomic DNA of cone snails would be an alternative approach to obtaining novel conotoxins. Tx6.7 could be used as a probe tool for ion channel research or a therapeutic candidate for novel drug development.
Sections du résumé
Background
UNASSIGNED
Conotoxins exhibit great potential as neuropharmacology tools and therapeutic candidates due to their high affinity and specificity for ion channels, neurotransmitter receptors or transporters. The traditional methods to discover new conotoxins are peptide purification from the crude venom or gene amplification from the venom duct.
Methods
UNASSIGNED
In this study, a novel O1 superfamily conotoxin Tx6.7 was directly cloned from the genomic DNA of
Results
UNASSIGNED
Patch clamp experiments on rat DRG neurons showed that Tx6.7 inhibited peak calcium currents by 59.29 ± 2.34% and peak potassium currents by 22.33 ± 7.81%. In addition, patch clamp on the ion channel subtypes showed that 10 μM Tx6.7 inhibited 56.61 ± 3.20% of the hCa
Conclusion
UNASSIGNED
Our results suggested that direct cloning of conotoxin sequences from the genomic DNA of cone snails would be an alternative approach to obtaining novel conotoxins. Tx6.7 could be used as a probe tool for ion channel research or a therapeutic candidate for novel drug development.
Identifiants
pubmed: 37283723
doi: 10.1590/1678-9199-JVATITD-2022-0085
pmc: PMC10241523
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e20220085Déclaration de conflit d'intérêts
Competing interests : The authors declare that they have no competing interests.
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