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Biểu hiện của phân tử acid subunit của amarantin, mang các biopeptide giảm huyết áp VY, trong văn hóa tế bào treo của Nicotiana tabacum NT1
Tóm tắt
Một phiên bản biến đổi của amarantin, protein dự trữ chính của hạt từ Amaranthus hypochondriacus, mang theo bốn biopeptide giảm huyết áp Val-Tyr vào phân tử acid subunit của protein, đã được biểu hiện trong các văn hóa tế bào treo của Nicotiana tabacum L. NT1. Đã tiến hành đánh giá tăng trưởng tế bào và động lực sống để xác định các điều kiện tối ưu cho quá trình chuyển gen thông qua Agrobacterium tumefaciens. Việc lựa chọn các callus chuyển gen khả thi được thực hiện bằng cách sử dụng 25 μg ml−1 hygromycin. Sự hiện diện của gen chuyển đã được xác nhận bằng cách sử dụng phương pháp nhuộm glucuronidase dạng mô và phân tích PCR. Sự tích lũy và biểu hiện của protein tái tổ hợp được phát hiện bằng phương pháp phân tích Western blot. Phân giải protein của callus chuyển gen cho thấy mức độ ức chế cao đối với enzyme chuyển đổi angiotensin, với giá trị IC50 là 3.5 μg ml−1. Giá trị này thấp hơn gấp 10 lần so với các chiết xuất protein của tế bào kiểu hoang dã, với giá trị IC50 là 29.0 μg ml−1.
Từ khóa
#Amarantin #biopeptide #giảm huyết áp #Nicotiana tabacum #chuyển gen #phân tích Western blotTài liệu tham khảo
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