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Analysis of RNA in Tumor Cells and Tissues by Northern Blot Technology (CAT#: STEM-MHT-0140-LGZ)

Introduction

Northern blot was invented in 1977 by James Alwine, David Kemp and George Stark at Stanford University. Because its basic principle and operation process are very similar to Southern blot, it is called Northern blot, which is mainly used to analyze the expression of gene mRNA. Although methods for detecting gene expression include QPCR, gene chips, and RNase protection experiments, Northern blot has better sensitivity than gene chips; compared with QPCR, it has higher specificity and can effectively reduce false positives in experimental results. Northern blot experiments are still considered an accurate method for detecting gene expression.




Principle

The RNA separated by agarose gel electrophoresis is transferred to a solid-phase carrier by a certain method, and then hybridized with a labeled probe, and the transcriptional expression can be quantitatively or qualitatively analyzed through the hybridization result.

Applications

RNA Analysis

Procedure

1. RNA extraction and quality control.
2. Denaturing gel RNA electrophoresis.
3. Transfer the membrane.
4. Probe synthesis and DIG labeling.
5. Prehybridization.
6. Hybridization.
7. Wash the membrane.
8. Data processing.

Materials

Samples of plants and animals provided by customers must be shipped on dry ice. If the RNA sample is provided, the following conditions must be met: the RNA integrity is good (28S, 18S bands are clearly visible), no degradation or DNA contamination, and the customer needs to provide the electrophoretic map; High RNA purity (OD260/OD280=1.9~2.1), customers need to provide spectrophotometric detection data; The RNA should be dissolved in double steaming water, the RNA concentration should not be less than 0.8 μg/μl, it is best to provide the amount of 2 experiments; Long distances need to be transported with dry ice, or RNA contained in ethanol with regular ice packs.