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Proteolytic enzymes from snake venoms trigger cascades of yet unknown molecular events

Grant number: 17/00715-0
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): March 01, 2017
Effective date (End): May 25, 2020
Field of knowledge:Biological Sciences - Biochemistry - Molecular Biology
Principal researcher:Solange Maria de Toledo Serrano
Grantee:Dilza Trevisan Silva
Home Institution: Instituto Butantan. Secretaria da Saúde (São Paulo - Estado). São Paulo , SP, Brazil
Associated research grant:13/07467-1 - CeTICS - Center of Toxins, Immune-Response and Cell Signaling, AP.CEPID
Associated scholarship(s):17/23871-8 - Molecular characterization of the in vivo effects of the hemorrhagic metalloproteinase HF3: insights from the proteomic analysis of mouse plasma and kidney tissue, BE.EP.PD


The proteinase domain of hemorrhagic snake venom metalloproteinases (SVMPs) is believed to function to degrade capillary basement membranes, endothelial cell surfaces, and stromal matrix ultimately causing extravasation of capillary contents into the surrounding stroma. Hemorrhagic factor 3 (HF3) is a glycosylated P-III SVMP isolated from Bothrops jararaca venom. HF3 is an extremely active toxin that shows a minimum hemorrhagic dose of 240 fmol on the rabbit skin. Previous studies have shown that HF3 degrades plasma and extracellular matrix proteins such as fibronectin, vitronectin, fibrinogen, von Willebrand factor, and collagens IV and VI. Analysis of HF3 effects on the mice dermis analyzed by proteomic approaches revealed a decrease of proteins related to cytoskeleton and extracellular matrix. The aims of this project are to improve the in vivo molecular characterization of the effects of HF3 and to characterize the hemorrhagic tissue regeneration. To tackle the challenge of uncovering putative molecular cascades triggered by HF3 we have adopted a systemic approach by proteomics based on mass spectrometry. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ASEGA, AMANDA F. .; MENEZES, MILENE C.; TREVISAN-SILVA, DILZA; CAJADO-CARVALHO, DANIELA; BERTHOLIM, LUCIANA; OLIVEIRA, ANA K.; ZELANIS, ANDRE; SERRANO, SOLANGE M. T.. Cleavage of proteoglycans, plasma proteins and the platelet-derived growth factor receptor in the hemorrhagic process induced by snake venom metalloproteinases. SCIENTIFIC REPORTS, v. 10, n. 1, . (17/00715-0, 10/00206-0, 17/19252-0, 10/17328-0, 11/08514-8, 13/07467-1)

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