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Tiến triển của các chất ức chế điểm kiểm soát miễn dịch CD47 trong liệu pháp điều trị ung thư: một góc nhìn về độc tính huyết học
Tóm tắt
CD47, một protein xuyên màng, hoạt động như một tín hiệu "không ăn tôi" và được biểu hiện quá mức ở nhiều loại tế bào khối u, từ đó tạo thành một trục tín hiệu với protein điều hòa tín hiệu alpha (SIRPα) và cho phép các tế bào khối u thoát khỏi quá trình thực bào trung gian của đại thực bào. Nhiều thử nghiệm lâm sàng với các tác nhân nhắm vào CD47 đang diễn ra và đã đạt được những kết quả ấn tượng ban đầu. Tuy nhiên, độc tính huyết học (đặc biệt là thiếu máu) đã nổi lên như là tác dụng phụ phổ biến nhất không thể bị bỏ qua. Trong phát triển các tác nhân nhắm vào CD47, nhiều phương pháp đã được sử dụng để giảm thiểu độc tính này. Trong bài đánh giá này, chúng tôi đã tóm tắt năm chiến lược được sử dụng để giảm nhẹ độc tính huyết học do chặn CD47, bao gồm: thay đổi phương thức tiêm; kháng thể hai nhắm bispecific nhắm đến CD47; kháng thể CD47/protein hợp nhất SIRPα có khả năng gắn với tế bào hồng cầu không đáng kể; kháng thể chống SIRPα; và các chất ức chế tương tự cyclotransferase peptide glutaminyl. Với những chiến lược này, việc phát triển các tác nhân nhắm vào CD47 có thể được cải thiện.
Từ khóa
#CD47 #khối u #miễn dịch #độc tính huyết học #thực bào #kháng thể bispecificTài liệu tham khảo
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