GSBS Student Publications

Title

Immunofluorescence imaging of DNA damage response proteins: optimizing protocols for super-resolution microscopy.

Publication Date

2009-05-01

UMMS Affiliation

Department of Biochemistry and Molecular Pharmacology

Document Type

Article

Disciplines

Life Sciences | Medicine and Health Sciences

Abstract

Immunofluorescence imaging has provided captivating visual evidence for numerous cellular events, from vesicular trafficking, organelle maturation and cell division to nuclear processes including the appearance of various proteins and chromatin components in distinct foci in response to DNA damaging agents. With the advent of new super-resolution microscope technologies such as 4Pi microscopy, standard immunofluorescence protocols deserve some reevaluation in order to take full advantage of these new technological accomplishments. Here we describe several methodological considerations that will help overcome some of the limitations that may result from the use of currently applied procedures, with particular attention paid to the analysis of possible colocalization of fluorescent signals. We conclude with an example of how application of optimized methods led to a breakthrough in super-resolution imaging of nuclear events occurring in response to DNA damage.

Keywords

immunofluorescence, antibody purification, RNAi to assess antibody specificity, antibody mixes, antibody cocktails, sequential antibody staining, super-resolution microscopy, 4Pi microscopy

DOI of Published Version

10.1016/j.ymeth.2009.02.009

Source

Methods. 2009 May;48(1):63-71. Epub 2009 Feb 24. Link to article on publisher's website

Journal/Book/Conference Title

Methods (San Diego, Calif.)

Related Resources

Link to article in PubMed

PubMed ID

19245833

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