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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Systemic Effects of Hemorrhagic Snake Venom Metalloproteinases: Untargeted Peptidomics to Explore the Pathodegradome of Plasma Proteins

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Bertholim, Luciana [1] ; Chaves, Alison F. A. [1] ; Oliveira, Ana K. [1, 2] ; Menezes, Milene C. [1] ; Asega, Amanda F. [1] ; Tashima, Alexandre K. [3] ; Zelanis, Andre [4] ; Serrano, Solange M. T. [1]
Total Authors: 8
[1] CeTICS, Lab Toxinol Aplicada, Ctr Toxins Immune Response & Cell Signalig, BR-05503900 Sao Paulo, SP - Brazil
[2] Univ Virginia, Sch Med, Dept Pathol, Charlottesville, VA 22908 - USA
[3] Univ Fed Sao Paulo, Dept Biochem, Escola Paulista Med, BR-04023901 Sao Paulo, SP - Brazil
[4] Univ Fed Sao Paulo, Funct Prote Lab, Dept Sci & Technol, 330 Talim St, BR-12231280 Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: TOXINS; v. 13, n. 11 NOV 2021.
Web of Science Citations: 0

Hemorrhage induced by snake venom metalloproteinases (SVMPs) is a complex phenomenon that involves capillary disruption and blood extravasation. HF3 (hemorrhagic factor 3) is an extremely hemorrhagic SVMP of Bothrops jararaca venom. Studies using proteomic approaches revealed targets of HF3 among intracellular and extracellular proteins. However, the role of the cleavage of plasma proteins in the context of the hemorrhage remains not fully understood. The main goal of this study was to analyze the degradome of HF3 in human plasma. For this purpose, approaches for the depletion of the most abundant proteins, and for the enrichment of low abundant proteins of human plasma, were used to minimize the dynamic range of protein concentration, in order to assess the proteolytic activity of HF3 on a wide spectrum of proteins, and to detect the degradation products using mass spectrometry-based untargeted peptidomics. The results revealed the hydrolysis products generated by HF3 and allowed the identification of cleavage sites. A total of 61 plasma proteins were identified as cleaved by HF3. Some of these proteins corroborate previous studies, and others are new HF3 targets, including proteins of the coagulation cascade, of the complement system, proteins acting on the modulation of inflammation, and plasma proteinase inhibitors. Overall, the data indicate that HF3 escapes inhibition and sculpts the plasma proteome by degrading key proteins and generating peptides that may act synergistically in the hemorrhagic process. (AU)

FAPESP's process: 11/08514-8 - Study of the degradome of HF3, a PIII-class snake venom metalloproteinase from Bothrops jararaca venom, on cultured fibroblasts
Grantee:André Zelanis Palitot Pereira
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 20/12317-2 - Proteomic analysis of the systemic effects of Bothrops jararaca venom in a murine model
Grantee:Alison Felipe Alencar Chaves
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 11/16623-1 - Proteomic analysis of the proteolytic activity of HF3, a metalloproteinase from the venom of Bothrops jararaca, upon human and snake plasma.
Grantee:Luciana Bertholim Nasciben
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 13/07467-1 - CeTICS - Center of Toxins, Immune-Response and Cell Signaling
Grantee:Hugo Aguirre Armelin
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC