Cerastes cerastes venom proteins (CcVP)

Cerastes cerastes venom proteins comprise a complex mixture of bioactive enzymes and non-enzymatic proteins secreted by the Saharan Horned Viper, a medically significant species found across North Africa and the Middle East. The venom is characterized by a high concentration of snake venom metalloproteinases (SVMPs), serine proteases (SVSPs), and phospholipases A2 (PLA2), which work synergistically to induce severe hemotoxicity and local tissue necrosis (Al-Shekhadat et al., 2019). These proteins target various components of the human circulatory system, including clotting factors and platelets, often resulting in consumption coagulopathy and systemic hemorrhage (Fahmi et al., 2012). In therapeutic practice, these proteins are the primary targets for polyvalent antivenoms, which utilize purified antibodies to sequester and neutralize the toxins (WHO, 2016). Beyond their role in envenomation, specific components like disintegrins have been studied for their potential as templates in developing antiplatelet and anticancer therapeutics due to their ability to bind integrin receptors (UniProt, 2024).

Other names

Saharan Horned Viper venomCerastes cerastes toxinsHorned Desert Viper venom

The primary therapeutic mechanism involves the neutralization of toxic enzymatic activity and binding sites through antibody-mediated sequestration by antivenoms, which prevents interaction with physiological substrates (WHO, 2016). Experimental small-molecule inhibitors like Varespladib act by competitively inhibiting the active sites of specific venom enzymes such as phospholipase A2 (Lewin et al., 2016).