AaHIV a sodium channel scorpion toxin inhibits the proliferation of DU145 prostate cancer cells.
Prostate cancer is the most highly diagnosed cancer in men worldwide. It is characterized by high proliferation, great invasion and metastatic potential. Sodium channel subtypes have been identified as highly expressed in different prostate cancer cell lines. In this study, we have screened the negatively charged fractions of Androctonus australis (Aa) scorpion venom to identify active peptides on DU145 prostate cancer cells proliferation. The most active compound was identified to be the sodium channel peptide AaHIV with an IC50 value of 15 μM. At this concentration, AaHIV had low effect on the adhesion of DU145 cells to fibronectin. When compared to other Na+ channel Aa toxins, AaHIV was found to be 2 times more active than AaHI and AaHII on DU145 cells proliferation and slightly less active than AaHII on their adhesion. The three peptides are inactive on DU145 cells migration. AaHIV was found to be 16 times more active than veratridine, asteroidal alkaloid from plants of the lily family widely used as a sodium channel activator. Electrophysiological experiments showed that the AaHIV toxin activates Nav1.6 channel, suggesting that this sodium channel subtype is implicated in the proliferation of DU145 prostate cancer cells.
['BenAissa|Rym|R|', 'Othman|Houcemeddine|H|', 'Villard|Claude|C|', 'Peigneur|Steve|S|', 'Mlayah-Bellalouna|Saoussen|S|', 'Abdelkafi-Koubaa|Zaineb|Z|', 'Marrakchi|Naziha|N|', 'Essafi-Benkhadir|Khadija|K|', 'Tytgat|Jan|J|', 'Luis|José|J|', 'Srairi-Abid|Najet|N|']
D000818:Animals D002448:Cell Adhesion D045744:Cell Line, Tumor D049109:Cell Proliferation D006801:Humans D008297:Male D062557:NAV1.6 Voltage-Gated Sodium Channel D011471:Prostatic Neoplasms D012604:Scorpion Venoms D012605:Scorpions D015222:Sodium Channels
Proliferation Prostate cancer Sodium channel subtypes DU145 cells Scorpion peptide