In situ hybridization: use of 35S-labeled probes on paraffin tissue sections

Methods : a Companion to Methods in Enzymology
B Micales, Gary E Lyons

Abstract

The following protocol is for radioactive in situ hybridization detection of RNA using paraffin-embedded tissue sections on glass microscope slides. Steps taken to inhibit RNase activity such as diethyl pyrocarbonate (DEPC) treatment of solutions and baked glassware are unnecessary. The tissue is fixed using 4% paraformaldehyde, hybridized with (35)S-labeled RNA probes, and exposed to nuclear-track emulsion. The entire procedure takes 2-3 days prior to autoradiography. The time required for autoradiography is variable with an average time of 10 days. Parameters that affect the length of the autoradiography include: (1) number of copies of mRNA in the tissue, (2) incorporation of label into the probe, and (3) amount of background signal. Additional steps involved in the autoradiography process, including development of the emulsion, cleaning of the microscope slides, counterstaining of the tissue, and mounting coverslips on the microscope slides, are discussed. In addition, a general guide to the interpretation of the in situ results is provided.

References

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Citations

Jul 13, 2007·Developmental Dynamics : an Official Publication of the American Association of Anatomists·Ki-Hyun KimYoungsook Lee
Sep 26, 2013·PloS One·Sydney M ShafferArjun Raj
Jan 1, 2008·Journal of Nanoparticle Research : an Interdisciplinary Forum for Nanoscale Science and Technology·Dong XiQin Ning

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