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- Title
A New Platelet-Aggregation-Inhibiting Factor Isolated from Bothrops moojeni Snake Venom.
- Authors
Sousa, Bruna Barbosa de; Mamede, Carla Cristine Neves; Matias, Mariana Santos; Pereira, Déborah Fernanda da Cunha; Queiroz, Mayara Ribeiro de; Dias, Edigar Henrique Vaz; Silva, Anielle Christine Almeida; Dantas, Noelio Oliveira; Costa, Júnia de Oliveira; Oliveira, Fábio de
- Abstract
This work reports the purification and functional characterization of BmooPAi, a platelet-aggregation-inhibiting factor from Bothrops moojeni snake venom. The toxin was purified by a combination of three chromatographic steps (ion-exchange on DEAE-Sephacel, molecular exclusion on Sephadex G-75, and affinity chromatography on HiTrap™ Heparin HP). BmooPAi was found to be a single-chain protein with an apparent molecular mass of 32 kDa on 14% SDS-PAGE, under reducing conditions. Sequencing of BmooPAi by Edman degradation revealed the amino acid sequence LGPDIVPPNELLEVM. The toxin was devoid of proteolytic, haemorrhagic, defibrinating, or coagulant activities and induced no significant oedema or hyperalgesia. BmooPAi showed a rather specific inhibitory effect on ristocetin-induced platelet aggregation in human platelet-rich plasma, whereas it had little or no effect on platelet aggregation induced by collagen and adenosine diphosphate. The results presented in this work suggest that BmooPAi is a toxin comprised of disintegrin-like and cysteine-rich domains, originating from autolysis/proteolysis of PIII SVMPs from B. moojeni snake venom. This toxin may be of medical interest because it is a platelet aggregation inhibitor, which could potentially be developed as a novel therapeutic agent to prevent and/or treat patients with thrombotic disorders.
- Subjects
SNAKE venom; VENOUS thrombosis; DRUG development; TREATMENT effectiveness; PLATELET aggregation inhibitors; THERAPEUTIC use of venom
- Publication
BioMed Research International, 2017, Vol 2017, p1
- ISSN
2314-6133
- Publication type
Article
- DOI
10.1155/2017/4315832