毒液
振动器
半胱氨酸
化学
钾通道
蛇毒
生物化学
博思罗普
分子质量
体内
生物
生物物理学
酶
生物技术
振动
物理
量子力学
作者
Carolina P. Bernardes,Danilo L. Menaldo,Karina Furlani Zoccal,Johara Boldrini-França,Steve Peigneur,Eliane C. Arantes,José Cesar Rosa,Lúcia Helena Faccioli,Jan Tytgat,Suely Vilela Sampaio
标识
DOI:10.1016/j.ijbiomac.2019.08.108
摘要
CRISPs represent a family of cysteine-rich secretory proteins with molecular mass between 20 and 30 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 24.4 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-1β, 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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