First report on BaltCRP, a cysteine-rich secretory protein (CRISP) from Bothrops alternatus venom: Effects on potassium channels and inflammatory processes.
Int J Biol Macromol
; 140: 556-567, 2019 Nov 01.
Article
em En
| MEDLINE
| ID: mdl-31419561
ABSTRACT
CRISPs represent a family of cysteine-rich secretory proteins with molecular mass between 20 and 30â¯kDa and a highly conserved specific pattern of 16 cysteine residues. In this work, we isolated and characterized a novel CRISP from Bothrops alternatus venom, named BaltCRP, also evaluating its effects on different isoforms of potassium channels (Kv1.1; Kv1.2; Kv1.3; Kv1.4; Kv1.5; Kv2.1; Kv10.1 and Shaker) and on inflammatory processes in vivo. This toxin has a molecular mass of 24.4â¯kDa and pI around 7.8. Electrophysiological experiments using voltage clamp techniques showed that BaltCRP can affect the currents of Kv1.1; Kv1.3; Kv2.1 and Shaker channels. In addition, BaltCRP induced inflammatory responses characterized by an increase of leukocytes in the peritoneal cavity of mice, also stimulating the production of mediators such IL-6, IL-1ß, IL-10, PGE2, PGD2, LTB4 and CysLTs. Altogether, these results demonstrated that BaltCRP can help understand the biological effects evoked by snake venom CRISPs, which could eventually lead to the development of new molecules with therapeutic potential.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Canais de Potássio
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Bothrops
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Venenos de Crotalídeos
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Cisteína
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article