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Optimization of digoxigenin in situ hybridization detection of neuropeptide Y expression
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- Author:
- No author available
- Journal Title:
- JOURNAL OF THE FOURTH MILITARY MEDICAL UNIVERSITY
- Issue:
- 14
- DOI:
- 10.3321/j.issn:1000-2790.2004.14.004
- Key Word:
- 原位杂交;地高辛配基;神经肽Y;脑切片
Abstract： 目的:优化用地高辛标记的原位杂交法检测小鼠海马结构中神经肽Y的表达.方法:用体外转录法获得地高辛标记的神经肽Y的反义和正义RNA探针.用kainic acid诱导小鼠脑组织中神经肽Y表达,2 h后牺牲小鼠,制备12μm厚的海马组织切片.然后比较不同pH值(7.5～9.5)的固定剂,不同的固定时间,不同的杂交前预处理,以及不同预杂交及杂交液对杂交信号的影响.结果:从pH 7.5～9.5,不同碱性固定液对杂交信号没有明显影响.30 min的固定时间足以获得满意的杂交结果.用蛋白酶K部分消化切片或用TritonX-100打孔反而降低了杂交信号.40 mg/L Salmon sperm DNA或250 mg/L bakers yeast RNA可获得与Denhardt's杂交液相同的杂交信号.结论:通过优化,我们获得了一种简便而又有效的地高辛标记的原位杂交法,用于检测神经肽Y表达.
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