Simultaneous RNA and DNA Extraction from Biopsy Material, Culture Cells, Plants, and Bacteria

  • Udo Döbbeling
Part of the Springer Protocols Handbooks book series (SPH)


The analysis of RNA and DNA from clinical biopsy material for diagnostic and research purposes has become more and more important. Currently, available methods and kits are focusing on the extraction of only one kind of nucleic acid, but, as biopsy material is often limited, a method for the simultaneous isolation of both kinds of nucleic acids from one sample is desirable. In contrast to DNA, RNA is rapidly degraded in the biopsy material which often cannot be immediately conserved during the extraction. It was found that it is necessary to break up the tissue totally to get RNA from the inner parts of the biopsy where RNA degradation has not yet proceeded so far, as body like conditions have been retained in this region for a longer time. Some tissues, especially skin, are very difficult to break up and conventional methods (e.g., guanidine thiocyanate), (1) yield too little and strongly degraded RNA (20–30 ng/mg tissue) of total RNA with an average size of 0.2–0.4 kb).


Biopsy Material Full Speed Guanidine Thiocyanate Simultaneous Isolation Equilibrate Phenol 
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  1. 1.
    Sambrook, J., Fritsch, E. F., and Maniatis, T. (1989) Extraction, purification, and analysis of messenger RNA from eukaryotic cells, in Molecular Cloning: A Laboratory Manual, Cold Spring Harbor Lab. Press, Cold Spring Harbor, NY, pp. 7.19–7.25.Google Scholar
  2. 2.
    Graham, D. F. (1978) The isolation of high molecular weight DNA from whole organisms or large tissue masses. Anal. Biochem. 85, 609–613.PubMedCrossRefGoogle Scholar
  3. 3.
    Döbbeling, U., Böni, R., Häffner, A., Dummer, A., and Burg, G. (1997) Method for simultaneous RNA and DNA isolation from biopsy material, culture cells, plants and bacteria. BioTechniques 22, 88–90.PubMedGoogle Scholar
  4. 4.
    Gough, N. M. (1988) Rapid and quantitative preparation of cytoplasmatic RNA from small numbers of cells. Anal. Biochem. 173, 93–95.PubMedCrossRefGoogle Scholar
  5. 5.
    Glisin, V., Crkvenjakov, R., and Byus, C. (1974) Ribonucleic acid isolated by cesium chloride centrifugation. Biochemistry 13, 2633–2637.PubMedCrossRefGoogle Scholar
  6. 6.
    Schorpp, M., Döbbeling, U., Wagner, U., and Ryffel, G. U. (1988) 5′ Flanking and 5′ proximal exon regions of the two Xenopus albumin genes. Deletion analysis of constitutive promoter function. J. Mol. Biol. 199, 83–93.PubMedCrossRefGoogle Scholar

Copyright information

© Humana Press Inc., Totowa, NJ 2000

Authors and Affiliations

  • Udo Döbbeling
    • 1
  1. 1.Department of DermatologyUniversity Hospital ZurichZurichSwitzerland

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