Purification, Characterization and Evaluation of the Anticoagulant Effect of an Uncompetitive Trypsin Inhibitor obtained from Bauhinia pulchella (Benth) Seeds
- 作者: Roma R.1, Dias L.2, Santos A.3, Silva R.1, Santos M.1, Rocha B.1, Carneiro R.4, Nagano C.4, Sampaio A.4, Oliva M.5, Silva C.6, Souza R.6, Teixeira C.3
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隶属关系:
- Department of Biochemistry and Molecular Biology, Federal University of Ceará
- Paulista School of Medicine, Support Foundation for the Federal University of São Paulo
- Agrarian and Biodiversity Sciences Center, Federal University of Cariri
- Department of Fisheries Engineering, Universidade Federal do Ceará
- Department of Biochemistry, Federal University of São Paulo
- Medical School, Federal University of Cariri
- 期: 卷 25, 编号 2 (2024)
- 页面: 172-182
- 栏目: Life Sciences
- URL: https://permmedjournal.ru/1389-2037/article/view/645546
- DOI: https://doi.org/10.2174/1389203724666230908114115
- ID: 645546
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全文:
详细
Introduction:Trypsin inhibitors (TIs) have the ability to competitively or non-competitively bind to trypsin and inhibit its action. These inhibitors are commonly found in plants and are used in protease inhibition studies involved in biochemical pathways of pharmacological interest.
Objective:This work aimed to purify a trypsin inhibitor from Bauhinia pulchella seeds (BpuTI), describing its kinetic mechanism and anticoagulant effect.
Methods:Affinity chromatography, protein assay, and SDS-PAGE were used to purify the inhibitor. Mass spectrometry, inhibition assays, and enzyme kinetics were used to characterize the inhibitor. In vitro assays were performed to verify its ability to prolong blood clotting time.
Results:Affinity chromatography on a Trypsin-Sepharose 4B column gave a yield of 43.1. BpuTI has an apparent molecular mass of 20 kDa with glycosylation (1.15%). Protein identification was determined by MS/MS, and BpuTI showed similarity to several Kunitz-type trypsin inhibitors. BpuTI inhibited bovine trypsin as an uncompetitive inhibitor with IC50 (3 x 10-6 M) and Ki (1.05 x 10-6 M). Additionally, BpuTI showed high stability to temperature and pH variations, maintaining its activity up to 100 ºC and in extreme pH ranges. However, the inhibitor was susceptible to reducing agents, such as DTT, which completely abolished its activity. BpuTI showed an anticoagulant effect in vitro at a concentration of 33 µM, prolonging clotting time by 2.6 times.
Conclusion:Our results suggest that BpuTI can be a biological tool to be used in blood clotting studies.
作者简介
Renato Roma
Department of Biochemistry and Molecular Biology, Federal University of Ceará
Email: info@benthamscience.net
Lucas Dias
Paulista School of Medicine, Support Foundation for the Federal University of São Paulo
Email: info@benthamscience.net
Ana Santos
Agrarian and Biodiversity Sciences Center, Federal University of Cariri
Email: info@benthamscience.net
Romério Silva
Department of Biochemistry and Molecular Biology, Federal University of Ceará
Email: info@benthamscience.net
Maria Santos
Department of Biochemistry and Molecular Biology, Federal University of Ceará
Email: info@benthamscience.net
Bruno Rocha
Department of Biochemistry and Molecular Biology, Federal University of Ceará
Email: info@benthamscience.net
Rômulo Carneiro
Department of Fisheries Engineering, Universidade Federal do Ceará
Email: info@benthamscience.net
Celso Nagano
Department of Fisheries Engineering, Universidade Federal do Ceará
Email: info@benthamscience.net
Alexandre Sampaio
Department of Fisheries Engineering, Universidade Federal do Ceará
Email: info@benthamscience.net
Maria Oliva
Department of Biochemistry, Federal University of São Paulo
Email: info@benthamscience.net
Cláudio Silva
Medical School, Federal University of Cariri
Email: info@benthamscience.net
Racquel Souza
Medical School, Federal University of Cariri
Email: info@benthamscience.net
Claudener Teixeira
Agrarian and Biodiversity Sciences Center, Federal University of Cariri
编辑信件的主要联系方式.
Email: info@benthamscience.net
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