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Nat Methods. 2009 Feb;6(2):139-41. doi: 10.1038/nmeth.1294. Epub 2009 Jan 11.

miRNA in situ hybridization in formaldehyde and EDC-fixed tissues.

Author information

  • 1Howard Hughes Medical Institute, Laboratory of RNA Molecular Biology, The Rockefeller University, 1230 York Avenue, Box 186, New York, New York 10065, USA.

Abstract

MicroRNAs are small regulatory RNAs with many biological functions and disease associations. We showed that in situ hybridization (ISH) using conventional formaldehyde fixation results in substantial microRNA loss from mouse tissue sections, which can be prevented by fixation with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide that irreversibly immobilizes the microRNA at its 5' phosphate. We determined optimal hybridization parameters for 130 locked nucleic acid probes by recording nucleic acid melting temperature during ISH.

PMID:
19137005
[PubMed - indexed for MEDLINE]
PMCID:
PMC2838186
Free PMC Article

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