Hepatitis C, Dengue and West Nile virus are among of the most important flaviviruses that share one important serine protease enzyme. Serine proteases belong to the most studied class of proteolytic enzymes, and are a primary target in the drug development field. In this paper, we describe the synthesis and preliminary molecular modeling studies of a novel class of N-t-Boc amino acid amides derived of isomannide as potential serine proteases inhibitors.
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http://dx.doi.org/10.1007/s00726-004-0146-9 | DOI Listing |
PeerJ
January 2025
Departamento de genética, ecologia e evolução, Laboratório de biologia integrativa, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
Background: The angiotensin-converting enzyme 2 (ACE2) and the transmembrane serine protease 2 (TMPRSS2) are central human molecules in the SARS-CoV-2 virus-host interaction. Evidence indicates that may influence expression. This study aims to determine whether ACE1, ACE2, and TMPRSS2 mRNA expression levels, along with the ACE1 Alu 287 bp polymorphism (rs4646994), contribute to the severity and mortality of COVID-19.
View Article and Find Full Text PDFParasit Vectors
January 2025
Laboratório de Imunologia Clínica, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil.
Background: Leishmaniases are neglected tropical diseases with great clinical and epidemiological importance. The current chemotherapy available for the treatment of leishmaniasis presents several problems, such as adverse effects, toxicity, long treatment time, and parasite resistance. The discovery of new therapeutic alternatives is extremely essential, and the discovery of cellular targets is a tool that helps in the development of new drugs.
View Article and Find Full Text PDFBMJ Open Gastroenterol
January 2025
Department of Biomedical Sciences, Nazarbayev University School of Medicine, Astana, Kazakhstan
Objective: The emergence of resistance-associated substitutions (RASs) poses a significant challenge to the effective treatment of hepatitis C virus (HCV) infection using direct-acting antivirals. This study's objective was to observe the prevalence of HCV genotypes and RAS within the Former Soviet Union (FSU) countries.
Methods: We analysed 60 NS3, 313 NS5A and 1119 NS5B sequences of HCV deposited in open-access databases from 11 FSU countries for the prevalence of genotypes and the presence of RAS using the Geno2Pheno software.
Front Plant Sci
January 2025
Institute of Life Sciences, Kangwon National University, Chuncheon, Republic of Korea.
Plant peptides, synthesized from larger precursor proteins, often undergo proteolytic cleavage and post-translational modifications to form active peptide hormones. This process involves several proteolytic enzymes (proteases). Among these, SBTs (serine proteases) are a major class of proteolytic enzymes in plants and play key roles in various regulatory mechanisms, including plant immune response, fruit development and ripening, modulating root growth, seed development and germination, and organ abscission.
View Article and Find Full Text PDFLipids Health Dis
January 2025
Department of Cardiology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Background: Homocysteine (Hcy) and the proprotein convertase subtilisin/kexin type 9 (PCSK9) significantly contribute to atherosclerosis (AS) as well as coronary lesion severity. Our previous work demonstrated that Hcy upregulates PCSK9, accelerating lipid accumulation and AS. A PCSK9 antagonist reduces plasma Hcy levels in ApoE mice.
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