Fast venomic analysis of Crotalus durissus terrificus from northeastern Argentina

• Autores: Fusco, Luciano Sebastián; Neto, Emidio Beraldo; Francisco, Aleff Ferreira; Alfonso, Jorge; Soares, Andreimar; Pimenta, Daniel Carvalho; Leiva, Laura Cristina Ana
• Año de publicación: 2020
• Idioma: inglés
• Tipo de recurso: artículo
• Fuente: Toxicon: X, 2020, vol. 7, p. 1-7.
• Materia: Venomics; Crotalus durissus terrificus; Toxin families
• Institución: Universidad Nacional del Nordeste

Fil: Fusco, Luciano Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Química Básica y Aplicada del Nordeste Argentino; Argentina.
Fil: Fusco, Luciano Sebastián. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina.
Fil: Neto, Emidio Beraldo. Instituto Batantan; Brasil.
Fil: Francisco, Aleff Ferreira. Universidade Estadual Paulista. Instituto de Biociencias; Brasil.
Fil: Alfonso, Jorge. Universidad Federal de Rondônia; Brasil.
Fil: Alfonso, Jorge. Centro para el Desarrollo de la Investigación Científica; Paraguay.
Fil: Soares, Andreimar. Universidad Federal de Rondônia; Brasil.
Fil: Soares, Andreimar. Centro Universitario Sao Lucas; Brasil.
Fil: Pimenta, Daniel Carvalho. Instituto Batantan; Brasil.
Fil: Leiva, Laura Cristina Ana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Química Básica y Aplicada del Nordeste Argentino; Argentina.
Fil: Leiva, Laura Cristina Ana. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina.
The complete knowledge of the toxins that make up venoms is the base for the treatment of snake accidents victims and the selection of specimens for the preparation of venom pools for antivenom production. In this work, we used a fast and direct venomics approach to identify the toxin families in the C.d. terrificus venom, a Southern American Neotropical rattlesnake. The RP-HPLC separation profile of pooled venom from adult specimens followed by mass spectrometry analysis revealed that C.d. terrificus’ venom proteome is composed of 12 protein families, which are unevenly distributed in the venom, e.g., there are few major proteins in the venom’s composition—phospholipase A2, serine proteinase, crotamine and L-amino acid oxidase. At the same time, the proteome analysis revealed a small set of proteins with low quantity (less than 1.5%), both enzymes (metalloprotease, phospholipase B and 5'-nucleotidase) and proteins (bradykinin potentiating and C-type natriuretic peptides, C-type lectin convulxin and nerve growth factor). To sum up, this research is the first venomic report of C.d. terrificus venom from Argentina. This proved to be crotamine-positive venom that has a lower metalloprotease content than C.d. terrificus venoms from other regions. This information could be used in the discovery of future pharmacological agents or targets in antivenom therapy.