A reproducible microanalytical method for the detection of specific RNA sequences by dot-blot hybridization - PubMed (original) (raw)
A reproducible microanalytical method for the detection of specific RNA sequences by dot-blot hybridization
S Cheley et al. Anal Biochem. 1984 Feb.
Abstract
A rapid, microanalytical procedure for the reproducible isolation of RNA from small cultured cell samples and application to dot-blot hybridization is described. The procedure employs guanidine hydrochloride solubilization of whole cells, disruption by syringing, and selective precipitation of RNA with ethanol. The method can be performed in a single tissue culture tube and obviates the need for removal of nuclei or for organic solvent extractions. Recovery of RNA from small cell samples (10(6) cells) is 51%, while 97% of the DNA and 99% of the protein are eliminated by the procedure. Detection of specific RNA by dot-blot hybridization using a labeled probe demonstrates high reproducibility of recovered RNA and lack of "masking" with up to a 10-fold excess of starting cell material. Applicability of the procedure to detection of virus-specific RNA in cells persistently infected with mouse hepatitis virus is described.
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