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Costa SR, Vasconcelos AG, Almeida JOCS, Arcanjo DDR, Dematei A, Barbosa EA, Silva PC, Nascimento T, Santos LH, Eaton P, Leite JRSDA, Brand GD. Structural Characterization and Rat Aortic Vascular Reactivity of Bradykinin-Potentiating Peptides (BPPs) from the Snake Venom of Bothrops moojeni from Delta do Parnaíba Region, Brazil. JOURNAL OF NATURAL PRODUCTS 2024. [PMID: 38449376 DOI: 10.1021/acs.jnatprod.3c00991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Snake venoms contain various bradykinin-potentiating peptides (BPPs). First studied for their vasorelaxant properties due to angiotensin converting enzyme (ACE) inhibition, these molecules present a range of binding partners, among them the argininosuccinate synthase (AsS) enzyme. This has renewed interest in their characterization from biological sources and the evaluation of their pharmacological activities. In the present work, the low molecular weight fraction of Bothrops moojeni venom was obtained and BPPs were characterized by mass spectrometry. Eleven BPPs or related peptides were sequenced, and one of them, BPP-Bm01, was new. Interestingly, some oxidized BPPs were detected. The three most abundant peptides were BPP-Bm01, BPP-Bax12, and BPP-13a, and their putative interactions with the AsS enzyme were investigated in silico. A binding cavity for these molecules was predicted, and docking studies allowed their ranking. Three peptides were synthesized and submitted to vasorelaxation assays using rat aortic rings. While all BPPs were active, BPP-Bm01 showed the highest potency in this assay. This work adds further diversity to BPPs from snake venoms and suggests, for the first time, a putative binding pocket for these molecules in the AsS enzyme. This can guide the design of new and more potent AsS activators.
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Affiliation(s)
- Samuel R Costa
- Laboratório de Síntese e Análise de Biomoléculas, LSAB, Instituto de Química, Universidade de Brasília, Brasília 70910-900, Brazil
| | - Andreanne G Vasconcelos
- Núcleo de Pesquisa em Morfologia e Imunologia Aplicada (NuPMIA), Faculdade de Medicina, Universidade de Brasília, Brasília 70910-900, Brazil
| | - José Otávio C S Almeida
- LAFMOL-Laboratório de Estudos Funcionais e Moleculares em Fisiofarmacologia, Departamento de Biofísica e Fisiologia, Universidade Federal do Piauí, Teresina 64049-550, Brazil
| | - Daniel D R Arcanjo
- LAFMOL-Laboratório de Estudos Funcionais e Moleculares em Fisiofarmacologia, Departamento de Biofísica e Fisiologia, Universidade Federal do Piauí, Teresina 64049-550, Brazil
| | - Anderson Dematei
- Núcleo de Pesquisa em Morfologia e Imunologia Aplicada (NuPMIA), Faculdade de Medicina, Universidade de Brasília, Brasília 70910-900, Brazil
| | - Eder A Barbosa
- Laboratório de Síntese e Análise de Biomoléculas, LSAB, Instituto de Química, Universidade de Brasília, Brasília 70910-900, Brazil
| | - Pedro Costa Silva
- Núcleo de Pesquisa em Biodiversidade e Biotecnologia, Biotec, Universidade Federal do Delta do Parnaíba, UFDPAR, Parnaíba, Piauí 64202-020, Brazil
| | - Thiago Nascimento
- Núcleo de Pesquisa em Biodiversidade e Biotecnologia, Biotec, Universidade Federal do Delta do Parnaíba, UFDPAR, Parnaíba, Piauí 64202-020, Brazil
| | - Lucianna H Santos
- Biomolecular Simulations Group, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
| | - Peter Eaton
- The Bridge, Joseph Banks Laboratories, School of Chemistry, University of Lincoln, Lincoln LN6 7EL, U.K
| | - José Roberto S de A Leite
- Núcleo de Pesquisa em Morfologia e Imunologia Aplicada (NuPMIA), Faculdade de Medicina, Universidade de Brasília, Brasília 70910-900, Brazil
- Núcleo de Pesquisa em Biodiversidade e Biotecnologia, Biotec, Universidade Federal do Delta do Parnaíba, UFDPAR, Parnaíba, Piauí 64202-020, Brazil
| | - Guilherme D Brand
- Laboratório de Síntese e Análise de Biomoléculas, LSAB, Instituto de Química, Universidade de Brasília, Brasília 70910-900, Brazil
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Alberto-Silva C, Pantaleão HQ, da Silva BR, da Silva JCA, Echeverry MB. Activation of M1 muscarinic acetylcholine receptors by proline-rich oligopeptide 7a (<EDGPIPP) from Bothrops jararaca snake venom rescues oxidative stress-induced neurotoxicity in PC12 cells. J Venom Anim Toxins Incl Trop Dis 2024; 30:e20230043. [PMID: 38362565 PMCID: PMC10868729 DOI: 10.1590/1678-9199-jvatitd-2023-0043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 12/22/2023] [Indexed: 02/17/2024] Open
Abstract
Background The bioactive peptides derived from snake venoms of the Viperidae family species have been promising as therapeutic candidates for neuroprotection due to their ability to prevent neuronal cell loss, injury, and death. Therefore, this study aimed to evaluate the cytoprotective effects of a synthetic proline-rich oligopeptide 7a (PRO-7a; Methods Both cells were pre-treated for four hours with different concentrations of PRO-7a, submitted to H2O2-induced damage for 20 h, and then the oxidative stress markers were analyzed. Also, two independent neuroprotective mechanisms were investigated: a) L-arginine metabolite generation via argininosuccinate synthetase (AsS) activity regulation to produce agmatine or polyamines with neuroprotective properties; b) M1 mAChR receptor subtype activation pathway to reduce oxidative stress and neuron injury. Results PRO-7a was not cytoprotective in C6 cells, but potentiated the H2O2-induced damage to cell integrity at a concentration lower than 0.38 μM. However, PRO-7a at 1.56 µM, on the other hand, modified H2O2-induced toxicity in PC12 cells by restoring cell integrity, mitochondrial metabolism, ROS generation, and arginase indirect activity. The α-Methyl-DL-aspartic acid (MDLA) and L-NΩ-Nitroarginine methyl ester (L-Name), specific inhibitors of AsS and nitric oxide synthase (NOS), which catalyzes the synthesis of polyamines and NO from L-arginine, did not suppress PRO-7a-mediated cytoprotection against oxidative stress. It suggested that its mechanism is independent of the production of L-arginine metabolites with neuroprotective properties by increased AsS activity. On the other hand, the neuroprotective effect of PRO-7a was blocked in the presence of dicyclomine hydrochloride (DCH), an M1 mAChR antagonist. Conclusions For the first time, this work provides evidence that PRO-7a-induced neuroprotection seems to be mediated through M1 mAChR activation in PC12 cells, which reduces oxidative stress independently of AsS activity and L-arginine bioavailability.
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Affiliation(s)
- Carlos Alberto-Silva
- Natural and Humanities Sciences Center (CCNH), Experimental
Morphophysiology Laboratory, Federal University of ABC (UFABC), São Bernardo do
Campo, SP, Brazil
| | - Halyne Queiroz Pantaleão
- Natural and Humanities Sciences Center (CCNH), Experimental
Morphophysiology Laboratory, Federal University of ABC (UFABC), São Bernardo do
Campo, SP, Brazil
| | - Brenda Rufino da Silva
- Natural and Humanities Sciences Center (CCNH), Experimental
Morphophysiology Laboratory, Federal University of ABC (UFABC), São Bernardo do
Campo, SP, Brazil
| | - Julio Cezar Araujo da Silva
- Natural and Humanities Sciences Center (CCNH), Experimental
Morphophysiology Laboratory, Federal University of ABC (UFABC), São Bernardo do
Campo, SP, Brazil
| | - Marcela Bermudez Echeverry
- Center for Mathematics, Computation and Cognition (CMCC), Federal
University of ABC, São Bernardo do Campo, SP, Brazil
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Messadi E. Snake Venom Components as Therapeutic Drugs in Ischemic Heart Disease. Biomolecules 2023; 13:1539. [PMID: 37892221 PMCID: PMC10605524 DOI: 10.3390/biom13101539] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/18/2023] [Accepted: 09/27/2023] [Indexed: 10/29/2023] Open
Abstract
Ischemic heart disease (IHD), especially myocardial infarction (MI), is a leading cause of death worldwide. Although coronary reperfusion is the most straightforward treatment for limiting the MI size, it has nevertheless been shown to exacerbate ischemic myocardial injury. Therefore, identifying and developing therapeutic strategies to treat IHD is a major medical challenge. Snake venoms contain biologically active proteins and peptides that are of major interest for pharmacological applications in the cardiovascular system (CVS). This has led to their use for the development and design of new drugs, such as the first-in-class angiotensin-converting enzyme inhibitor captopril, developed from a peptide present in Bothrops jararaca snake venom. This review discusses the potential usefulness of snake venom toxins for developing effective treatments against IHD and related diseases such as hypertension and atherosclerosis. It describes their biological effects at the molecular scale, their mechanisms of action according to their different pharmacological properties, as well as their subsequent molecular pathways and therapeutic targets. The molecules reported here have either been approved for human medical use and are currently available on the drug market or are still in the clinical or preclinical developmental stages. The information summarized here may be useful in providing insights into the development of future snake venom-derived drugs.
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Affiliation(s)
- Erij Messadi
- Plateforme de Physiologie et Physiopathologie Cardiovasculaires (P2C), Laboratoire des Biomolécules, Venins et Applications Théranostiques (LR20IPT01), Institut Pasteur de Tunis, Université Tunis El Manar, Tunis 1068, Tunisia
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de Jesus ÉF, Nunes ADDC, Pontes CNR, Macedo LM, Mendes EP, Ianzer DA, da Costa M, Ghedini PC, Dos Santos FCA, Biancardi MF, Castro CH. Cardioprotective effects of the proline-rich oligopeptide Bj-PRO-7a in spontaneously hypertensive rats. Clin Exp Pharmacol Physiol 2021; 48:1693-1703. [PMID: 34427931 DOI: 10.1111/1440-1681.13577] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 08/03/2021] [Accepted: 08/20/2021] [Indexed: 11/28/2022]
Abstract
The proline-rich oligopeptide from Bothrops jararaca snake venom, Bj-PRO-7a, promotes acute effects in blood pressure in hypertensive animals. However, the cardiac effects of this heptapeptide are completely unknown. Thus, we sought to evaluate whether the Bj-PRO-7a could protect against cardiac remodelling in spontaneously hypertensive rats (SHR). SHR were treated with Bj-PRO-7a (71 nmol/kg/day, s.c.) or saline for 28 days. Wistar rats were used as control. Systolic blood pressure (SBP) and heart rate (HR) were measured by tail-cuff plethysmography. Cardiomyocyte diameter and interstitial and perivascular fibrosis of the left ventricle (LV) were evaluated using Picrosirius staining. Immunofluorescence was used to detect collagen I and III. Fibroblast proliferation was assessed by immunohistochemistry to detect proliferating cell nuclear antigen (PCNA). Protein expression was assessed by western blot. The superoxide dismutase and catalase activities and the concentration of lipid peroxidation products were evaluated in the LV. The SBP and HR were not different between treated and non-treated SHR at the end of the treatment. However, Bj-PRO-7a attenuated the cardiomyocyte hypertrophy, deposition of interstitial and perivascular fibrosis and collagen I, and positive PCNA-labelled fibroblasts. This peptide also reduced the increased levels of TBARS, expression and activity of catalase, and activity of SOD in LV from SHR. Also, the Bj-PRO-7a increased the expression of metalloproteinases-2 in SHR hearts. These findings demonstrate that the Bj-PRO-7a reduced the pathological cardiac remodelling in a pressure-independent manner in hypertensive rats through mechanisms mediated by oxidative stress regulation.
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Affiliation(s)
- Érika Fernandes de Jesus
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Allancer Divino de Carvalho Nunes
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil.,Burnett School of Biomedical Sciences, University of Central Florida, Orlando, Florida, USA
| | - Carolina Nobre Ribeiro Pontes
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Larissa Matuda Macedo
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Elizabeth Pereira Mendes
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Danielle Alves Ianzer
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Michael da Costa
- Department of Pharmacology, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Paulo César Ghedini
- Department of Pharmacology, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | | | - Manoel Francisco Biancardi
- Department of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Carlos Henrique Castro
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
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