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Nhắm đến staphylocoagulase bằng isoquercitrin bảo vệ chuột khỏi viêm phổi do Staphylococcus aureus gây ra
Tóm tắt
Staphylocoagulase (Coa) là một yếu tố virulance của Staphylococcus aureus (S. aureus) có tác dụng thúc đẩy quá trình đông máu bằng cách kích hoạt prothrombin để chuyển fibrinogen thành fibrin. Coa đóng vai trò quan trọng trong sinh bệnh học của bệnh và là một mục tiêu tiềm năng cho việc điều trị các bệnh nhiễm S. aureus. Trong nghiên cứu này, chúng tôi đã xác định rằng isoquercitrin, một hợp chất flavonol tự nhiên, có thể làm giảm đáng kể hoạt động của Coa ở nồng độ không ảnh hưởng đến sự phát triển của vi khuẩn. Các nghiên cứu cơ chế bằng mô phỏng động lực học phân tử cho thấy isoquercitrin liên kết với Coa qua sự tương tác với Asp-181 và Tyr-188, qua đó ảnh hưởng đến khả năng liên kết của Coa với prothrombin. Quan trọng là, các nghiên cứu in vivo cho thấy điều trị bằng isoquercitrin làm giảm đáng kể gánh nặng vi khuẩn, tổn thương bệnh lý và viêm của mô phổi, đồng thời cải thiện tỷ lệ sống sót của những con chuột nhiễm chủng S. aureus Newman. Dữ liệu này cho thấy rằng isoquercitrin là một chất ức chế Coa tiềm năng có thể được sử dụng để phát triển các loại thuốc điều trị nhằm chống lại các nhiễm trùng do S. aureus.
Từ khóa
#Staphylococcus aureus #staphylocoagulase #isoquercitrin #viêm phổi #điều trị nhiễm trùngTài liệu tham khảo
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