Summary

双整装原位杂交技术在早期鸡胚

Published: October 27, 2008
doi:

Summary

本视频演示了原位杂交的方法,其中2个不同的基因的时空表达模式可以在年轻的鸡胚显示2色整装。这种方法最初是由大卫威尔金森,多明戈斯恩里克,菲尔英厄姆和大卫ISH – Horowicz。

Abstract

鸡胚是一个有价值的工具,在早期胚胎发育的研究。其透明度,可获得性和易于操纵,使其用于研究基因表达在脑,神经管,体节和心脏原基形成的理想工具。本视频演示了不同的步骤,在2色整装原位杂交;首先,胚胎从卵解剖和多聚甲醛固定。二,预杂交胚胎处理。具有两种不同的探针,再加上挖一个,并再加以FITC标记的杂交胚胎。杂交过夜后,胚胎培养与辛加上抗体。辛基板颜色反应的进行,和感兴趣的区域显示为蓝色。胚胎,然后加上与FITC标记抗体孵育。胚胎处理颜色用FITC反应,和感兴趣的区域显示为红色。最后,胚胎是固定的,为phtograph处理和切片。还介绍了故障排除指南。

Protocol

第1部分:固定的胚胎填充与冰冷的DEPC – PBS清扫菜。置于冰上。打开用镊子轻敲壳蛋和删除壳件。 用镊子取出厚厚的白蛋白。卵黄囊倾斜粗钳,使胚胎朝上。 用剪刀,切割围绕胚胎的卵黄囊平方米。 使用勺子,取出胚胎从卵黄和冰冷的DEPC – PBS。 在显微镜下,删除膜和蛋黄,并转移到固定菜。 牵制,除去DEPC – PBS。 DEPC – PBS在4%煤灰更换和修复…

Discussion

2色整装原位杂交方法是用来确定空间和时间的基因表达模式,使用一个或两个基因的兴趣。应用领域包括新基因的基因表达模式的评估 (如1,2,以及以下侮辱基因表达的变化(3 胚胎操作 ,珠4,RNA 或DNA电构造5)。

Declarações

The authors have nothing to disclose.

Acknowledgements

这项工作是支持的玛格丽特M. Alkek基金会RHF。

Materials

Material Name Tipo Company Catalogue Number Comment
Eggs Animal Charles River Premium Fertile  
Stereomicroscope Microscope Leica Microsystems MZ9.5  
Marsh Automatic Incubator Tool Lyon RX  
Hybridization Incubator Tool Hybaid Micro-4  
Adams Nutator orbital mixer Tool Fisher 14-062  
Curved Forceps (1) Tool Electron Microscopy Sciences 72991-4C  
Fine scissors Tool Fine Science Tools 14161-10  
Spoon Tool Fine Science Tools 10370-18  
Pasteur Capillary Pipette   Electron Microscopy Sciences 70950-12  
Microcapillary tube   Sigma P1049-1PAK Pull using vertical micropipette puller; blunt end with fine forceps
Microdissecting knife   Fine Science Tools 10056-12 Use to puncture cavities prior to in situ hybridization
Minuten pins 0.2mm diam   Fine Science Tools 26002-20 Keep pins together using a magnetic stirrer;
Sylgard 184 Silicon Elastomer Curing Agent and Base Reagent Dow Corning 0001986475 Mix 1 part Curing Agent, 9 parts Base; set O/N at 37C
Diethylpyrocarbonate (depc) Reagent Acros Organics 10025025 Add 1ml depc to 1l PBS; shake; autoclave
16% PFA Reagent Electron Microscopy Sciences 15710  
Tween-20 Reagent Sigma P1379-100ML  
Proteinase K   Sigma P2308-5MG Stock at 10 mg/ml in depc-H2O in 10ul aliquots. Store at -20C.
Formamide, deionized Reagent Ambion 9342  
Yeast tRNA-25 mg Reagent Invitrogen 15401-011 Stock at 20 mg/ml in depc-H2O in 125ul aliquots. Store at -20C
Heparin Sodium salt Reagent Sigma H4784-250MG Stock at 50 mg/ml in depc-H2O in 100ul aliquots. Store at -20C.
SSC x20 pH5.5 Reagent Fisher PR-V4261  
EDTA (0.5M) PR-V4231 Fisher    
SDS Reagent Fisher BP166-100  
Maleic acid Reagent Fluka 63189  
Boehringer Blocking Reagent Reagent Roche Applied Sciences 11096176001 Use at 2% in MABT. To make, heat with MABT for 20 mn at 60C. Can make a stock and store in 1-5 ml aliquots at 20C.
Heat inactivated sheep serum Reagent Jackson Immuno 013-000-121 Dissolve in 10 ml H2O; heat 550C, 30 mn. Aliquot at 1ml, -20C.
Anti-Digoxigenin-AP, Fab fragments Reagent Roche Applied Sciences 11093274910  
NBT/BCIP stock solution Reagent Roche Applied Sciences 11681451001  
Anti-Fluorescein-AP, Fab fragments Reagent Roche Applied Sciences 11426338910  
2M Tris BP1759-500 Fisher    
Vector Red Alkaline Phosphatase Substrate Kit Reagent Vector Laboratories SK-5100  
1,2,3,4-tetrahydronaphthalene Reagent Sigma 429325-100ML Under hood

Referências

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Citar este artigo
Psychoyos, D., Finnell, R. Double Whole Mount in situ Hybridization of Early Chick Embryos. J. Vis. Exp. (20), e904, doi:10.3791/904 (2008).

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