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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.)

LmrBPP9: A synthetic bradykinin-potentiating peptide from Lachesis muta rhombeata venom that inhibits the angiotensin-converting enzyme activity in vitro and reduces the blood pressure of hypertensive rats

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Pinheiro-Junior, Ernesto Lopes [1] ; Boldrini-Franca, Johara [1] ; Pires de Campos Araujo, Luciana Mattoso [1] ; Santos-Filho, Norival Alves [2] ; Bendhack, Lusiane Maria [1] ; Cilli, Eduardo Maffud [2] ; Arantes, Eliane Candiani [1]
Total Authors: 7
[1] Univ Sao Paulo, Sch Pharmaceut Sci Ribeirao Preto FCFRP, Ribeirao Preto, SP - Brazil
[2] Sao Paulo State Univ, Chem Inst, Araraquara, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Peptides; v. 102, p. 1-7, APR 2018.
Web of Science Citations: 4

Bradykinin-potentiating peptides (BPPs) are an important group of toxins present in Lachesis muta rhombeata venom. They act directly at renin-angiotensin-aldosterone system, through the inhibition of angiotensin-converting enzyme (ACE). This action may contribute to the hypotensive shock observed during the envenoming by this species. Thus, the main goal of this study was the solid-phase synthesis of a BPP found in L. m. rhombeata venom and its in vitro and in vivo characterization in relation to ACE inhibition and hypotensive activity, respectively. The LmrBPP9 peptide was synthesized using an automated solid-phase peptide synthesizer and purified by reversed-phase fast protein liquid chromatography (FPLC). The in vitro IC50 of the synthetic peptide is 4.25 +/- 0.10 mu M, showing a great capacity of ACE inhibition. The in vivo studies showed that LmrBPP9 induces blood pressure reduction, both in normotensive and hypertensive rats, being more pronounced in the last ones. These results agree with the in vitro results, showing that the synthetic peptide LmrBPP9 is a potential molecule to the development of a new antihypertensive drug. (AU)

FAPESP's process: 14/05538-1 - Synthesis, characterization, study of action mechanism and analysis of different release methods of pBthTX-I, in its monomeric and dimeric forms
Grantee:Norival Alves Santos Filho
Support Opportunities: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 14/16182-3 - New functional perspectives of a serine protease from Crotalus durissus collilineatus: activity on voltage-gated ion channels
Grantee:Johara Boldrini França
Support Opportunities: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 13/07600-3 - CIBFar - Center for Innovation in Biodiversity and Drug Discovery
Grantee:Glaucius Oliva
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC