Chức năng sinh học của Presenilin và vai trò của nó trong quá trình phát sinh bệnh Alzheimer

Translational Neurodegeneration - Tập 2 - Trang 1-13 - 2013
Shuting Zhang1, Mingming Zhang1, Fang Cai1, Weihong Song1
1Townsend Family Laboratories, Department of Psychiatry, Brain Research Center, Graduate Program in Neuroscience, The University of British Columbia, Vancouver, Canada

Tóm tắt

Các protein Presenilin (PS) là phần lõi xúc tác của phức hợp γ-secretase. Tuy nhiên, cơ chế những đột biến PS liên quan đến bệnh Alzheimer (AD) vẫn còn mịt mờ. Trong bài viết này, chúng tôi đã xem xét sinh học tổng quát và cơ chế của γ-secretase và tập trung vào các thành phần xúc tác – presenilin và các chức năng sinh học cũng như đóng góp của chúng vào quá trình phát sinh bệnh Alzheimer. Chức năng của presenilin được chia thành hai loại: chức năng phụ thuộc vào γ-secretase và chức năng độc lập với γ-secretase. Các chức năng phụ thuộc vào γ-secretase của presenilin được minh họa qua các quá trình cắt nối tuần tự trong việc xử lý APP và Notch; các chức năng độc lập với γ-secretase của presenilin bao gồm việc ổn định β-catenin trong con đường tín hiệu Wnt, điều tiết cân bằng canxi và tương tác của chúng với sự truyền dẫn synapse.

Từ khóa

#Presenilin #γ-secretase #bệnh Alzheimer #chức năng sinh học #cắt nối APP #đường tín hiệu Wnt.

Tài liệu tham khảo

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