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JoVE Journal
Developmental Biology
通过荧光抗体注射观察活果蝇胚胎中的低丰度蛋白质和翻译后修饰
通过荧光抗体注射观察活果蝇胚胎中的低丰度蛋白质和翻译后修饰
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Developmental Biology
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JoVE Journal Developmental Biology
Visualizing Low-Abundance Proteins and Post-Translational Modifications in Living Drosophila Embryos via Fluorescent Antibody Injection

通过荧光抗体注射观察活果蝇胚胎中的低丰度蛋白质和翻译后修饰

Full Text
1,347 Views
07:15 min
January 19, 2024

DOI: 10.3791/66080-v

Qihong Zheng*1, Xiaoxiang Xiang*1, Yan Yan2,3, Huapeng H. Yu1

1School of Life Sciences,SUSTech University, 2Shenzhen PKU-HKUST Medical Center, 3Division of Life Science,Hong Kong University of Science and Technology

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Please note that some of the translations on this page are AI generated. Click here for the English version.

Summary

该协议描述了定制的基于抗体的荧光标记和注射到早期 果蝇 胚胎中,以实现使用传统GFP / mCherry标签方法难以检测的低丰度蛋白质或翻译后修饰的实时成像。

Transcript

我们旨在了解机械和生化信号如何与动物形态发生相关联,包括细胞和分子对力的检测和响应。更多的分子被发现是机械敏感的,在不同程度的张力下功能不同。然而,这些力敏感事件的生理背景和功能在很大程度上仍然未知。

由于力敏感事件的动态性质,我们的领域在很大程度上依赖于高速荧光成像和延时记录来捕捉分子和细胞行为。许多荧光标记的蛋白质不够亮,无法成像,并且需要时空分辨率而没有明显的漂白剂。另一方面,传统的免疫荧光方法只能在固定后捕获分子和细胞固定装置的快照。

该方法为动态跟踪主要信号通路(如Notch、Wnt和BMP通路)的许多低丰度蛋白受体的定位铺平了道路。最终,除了传统的线性信号级联之外,我们还可以确定信号转导事件在亚细胞尺度上发生的位置。

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