Name: two- and three-dimensional live cell imaging of dna damage response proteins
Uploaded: 2012-09-28T12:00:00
Description: Watch this Scientific Journal Video about Two- and Three-Dimensional Live Cell Imaging of DNA Damage Response Proteins at JoVE.com

Supported in part by R01NS064593 and R21ES016636 (K.V.). Microscopy was performed at the VCU - Department of Neurobiology &amp; Anatomy Microscopy Facility, supported, in part, with funding from NIH-NINDS Center core grant 5P30NS047463. The spinning disc confocal microscope was purchased with an NIH-NCRR award (1S10RR027957).

A. Cell Preparation
<ol>
 <li>Normal human primary fibroblasts (GM02270) were obtained from Coriell Cell Repository, Camden, New Jersey, and immortalized with hTERT 6. Cells were grown and expanded in CellStar 6-cm dishes in media (4 ml) consisting of MEM supplemented with 20% fetal bovine serum (GIBCO), non-essential/essential amino acids, vitamins, sodium pyruvate, and penicillin/streptomycin (HyClone).</li>
 <li>Human embryonic kidney 293 (HEK293) cells were obtained from American Type Culture Collection ...

<ol>
	<li>Botuyan, M. V., Lee, J., Ward, I. M., Kim, J. E., Thompson, J. R., Chen, J., Mer, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Structural+basis+for+the+methylation+state-specific+recognition+of+histone+H4-K20+by+53BP1+and+Crb2+in+DNA+repair.">Structural basis for the methylation state-specific recognition of histone H4-K20 by 53BP1 and Crb2 in DNA repair.</a> Cell. 127, 1361-1373 (2006).</li><li>Dimitrova, N., Chen, Y. C., Spector, D. L., de Lange, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=53BP1+promotes+non-homologous+end+joining+of+telomeres+by+increasing+chromatin+mobility.">53BP1 promotes non-homologous end joining of telomeres by increasing chromatin mobility.</a> Nature. 456, 524-528 (2008).</li><li>Feuerhahn, S., Egly, J. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Tools+to+study+DNA+repair:+what's+in+the+box.">Tools to study DNA repair: what's in the box.</a> Trends Genet. 24, 467-474 (2008).</li><li>Giunta, S., Belotserkovskaya, R., Jackson, S. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=DNA+damage+signaling+in+response+to+double-strand+breaks+during+mitosis.">DNA damage signaling in response to double-strand breaks during mitosis.</a> J. Cell Biol. 190, 197-207 (2010).</li><li>Giunta, S., Jackson, S. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Give+me+a+break,+but+not+in+mitosis:+the+mitotic+DNA+damage+response+marks+DNA+double-strand+breaks+with+early+signaling+events.">Give me a break, but not in mitosis: the mitotic DNA damage response marks DNA double-strand breaks with early signaling events.</a> Cell Cycle. 10, 1215-1221 (2011).</li><li>Golding, S. E., Morgan, R. N., Adams, B. R., Hawkins, A. J., Povirk, L. F., Valerie, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Pro-survival+AKT+and+ERK+signaling+from+EGFR+and+mutant+EGFRvIII+enhances+DNA+double-strand+break+repair+in+human+glioma+cells.">Pro-survival AKT and ERK signaling from EGFR and mutant EGFRvIII enhances DNA double-strand break repair in human glioma cells.</a> Cancer Biol. Ther. 8, 730-738 (2009).</li><li>Huyen, Y., Zgheib, O., Ditullio, R. A., Gorgoulis, V. G., Zacharatos, P., Petty, T. J., Sheston, E. A., Mellert, H. S., Stavridi, E. S., Halazonetis, T. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Methylated+lysine+79+of+histone+H3+targets+53BP1+to+DNA+double-strand+breaks.">Methylated lysine 79 of histone H3 targets 53BP1 to DNA double-strand breaks.</a> Nature. 432, 406-411 (2004).</li><li>Jackson, S. P., Bartek, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+DNA-damage+response+in+human+biology+and+disease.">The DNA-damage response in human biology and disease.</a> Nature. 461, 1071-1078 (2009).</li><li>Kanda, T., Sullivan, K. F., Wahl, G. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Histone-GFP+fusion+protein+enables+sensitive+analysis+of+chromosome+dynamics+in+living+mammalian+cells.">Histone-GFP fusion protein enables sensitive analysis of chromosome dynamics in living mammalian cells.</a> Curr. Biol. 8, 377-385 (1998).</li><li>Massignani, M., Canton, I., Sun, T., Hearnden, V., Macneil, S., Blanazs, A., Armes, S. P., Lewis, A., Battaglia, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Enhanced+fluorescence+imaging+of+live+cells+by+effective+cytosolic+delivery+of+probes.">Enhanced fluorescence imaging of live cells by effective cytosolic delivery of probes.</a> PLoS One. 5, e10459 (2010).</li><li>Nakamura, K., Sakai, W., Kawamoto, T., Bree, R. T., Lowndes, N. F., Takeda, S., Taniguchi, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Genetic+dissection+of+vertebrate+53BP1:+a+major+role+in+non-homologous+end+joining+of+DNA+double+strand+breaks.">Genetic dissection of vertebrate 53BP1: a major role in non-homologous end joining of DNA double strand breaks.</a> DNA Repair (Amst). 5, 741-749 (2006).</li><li>Schultz, L. B., Chehab, N. H., Malikzay, A., Halazonetis, T. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=p53+binding+protein+1+(53BP1)+is+an+early+participant+in+the+cellular+response+to+DNA+double-strand+breaks.">p53 binding protein 1 (53BP1) is an early participant in the cellular response to DNA double-strand breaks.</a> J. Cell. Biol. 151, 1381-1390 (2000).</li><li>Valerie, K., Povirk, L. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Regulation+and+mechanisms+of+mammalian+double-strand+break+repair.">Regulation and mechanisms of mammalian double-strand break repair.</a> Oncogene. 22, 5792-5812 (2003).</li><li>Wang, B., Matsuoka, S., Carpenter, P. B., Elledge, S. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=53BP1,+a+mediator+of+the+DNA+damage+checkpoint.">53BP1, a mediator of the DNA damage checkpoint.</a> Science. 298, 1435-1438 (2002).</li><li>Ward, I. M., Minn, K., Jorda, K. G., Chen, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Accumulation+of+checkpoint+protein+53BP1+at+DNA+breaks+involves+its+binding+to+phosphorylated+histone+H2AX.">Accumulation of checkpoint protein 53BP1 at DNA breaks involves its binding to phosphorylated histone H2AX.</a> J. Biol. Chem. 278, 19579-19582 (2003).</li></ol>

Maintenance of genomic integrity is crucial for cell survival. Failure to preserve the genome results in premature aging, carcinogenesis, or death 8. There is intense interest in discerning how the DDR functions, stemming from its importance to both basic and clinical research. Many techniques have been developed over the years to aid in the study of how cells detect and repair DNA damage. Traditional methods such as immunocytochemistry and western blotting have been mainstays of the field, though recen...

<table border="1">
 <tbody>
 <tr>
 <td>Product</td>
 <td>Company</td>
 </tr>
 <tr>
 <td>CellStar culture dishes</td>
 <td>Greiner Bio-one</td>
 </tr>
 <tr>
 <td>FluroDish glass bottom dishes</td>
 <td>World Precision Instruments, Inc.</td>
 </tr>
 <tr>
 <td>MEM media</td>
 <td>GIBCO</td>
 </tr>
 <tr>
 <td>Non-essential amino acids</td>
 <td>GIBCO</td>
 </tr>
 <tr>
 <td>Amino acids</td>
 <td>GIBCO</td>
 </tr>
 <tr>
 <td>Vitamins</td>
 <td>GIBCO</td>
 </tr>
 <tr>
 <td>Sodium Pyruvate</td>
 <td>Invitrogen</td>
 </tr>
 <tr>
 <td>Penicillin/Streptomycin </td>
 <td>HyClone</td>
 </tr>
 <tr>
 <td>Fetal Bovine Serum</td>
 <td>GIBCO</td>
 </tr>
 <tr>
 <td>N-Myc-53BP1 WT pLPC-Puro; 
 plasmid 19836</td>
 <td>Addgene</td>
 </tr>
 <tr>
 <td>pCLNR-H2BG; plasmid 17735</td>
 <td>Addgene</td>
 </tr>
 <tr>
 <td>SuperFect</td>
 <td>Qiagen</td>
 </tr>
 <tr>
 <td>Zeiss Cell Observer SD Imaging system</td>
 <td>Zeiss</td>
 </tr>
 <tr>
 <td>AxioVision (release 4.8.2)</td>
 <td>Zeiss</td>
 </tr>
 <tr>
 <td>Zeiss Immersol W Oil</td>
 <td>Zeiss</td>
 </tr>
 <tr>
 <td>Volocity software (version 6.0)</td>
 <td>PerkinElmer</td>
 </tr>
 </tbody>
</table>

two- and three-dimensional live cell imaging of dna damage response proteins

Double-strand breaks (DSBs) are the most deleterious DNA lesions a cell can encounter. If left unrepaired, DSBs harbor great potential to generate mutations and chromosomal aberrations1. To prevent this trauma from catalyzing genomic instability, it is crucial for cells to detect DSBs, activate the DNA damage response (DDR), and repair the DNA. When stimulated, the DDR works to preserve genomic integrity by triggering cell cycle arrest to allow for repair to take place or force the cell to undergo apoptosis. The predominant mechanisms of DSB repair occur through nonhomologous end-joining (NHEJ) and homologous recombination repair (HRR) (reviewed in2). There are many proteins whose activities must be precisely orchestrated for the DDR to function properly. Herein, we describe a method for 2- and 3-dimensional (D) visualization of one of these proteins, 53BP1.
The p53-binding protein 1 (53BP1) localizes to areas of DSBs by binding to modified histones3,4, forming foci within 5-15 minutes5. The histone modifications and recruitment of 53BP1 and other DDR proteins to DSB sites are believed to facilitate the structural rearrangement of chromatin around areas of damage and contribute to DNA repair6. Beyond direct participation in repair, additional roles have been described for 53BP1 in the DDR, such as regulating an intra-S checkpoint, a G2/M checkpoint, and activating downstream DDR proteins7-9. Recently, it was discovered that 53BP1 does not form foci in response to DNA damage induced during mitosis, instead waiting for cells to enter G1 before localizing to the vicinity of DSBs6. DDR proteins such as 53BP1 have been found to associate with mitotic structures (such as kinetochores) during the progression through mitosis10.
In this protocol we describe the use of 2- and 3-D live cell imaging to visualize the formation of 53BP1 foci in response to the DNA damaging agent camptothecin (CPT), as well as 53BP1's behavior during mitosis. Camptothecin is a topoisomerase I inhibitor that primarily causes DSBs during DNA replication. To accomplish this, we used a previously described 53BP1-mCherry fluorescent fusion protein construct consisting of a 53BP1 protein domain able to bind DSBs11. In addition, we used a histone H2B-GFP fluorescent fusion protein construct able to monitor chromatin dynamics throughout the cell cycle but in particular during mitosis12. Live cell imaging in multiple dimensions is an excellent tool to deepen our understanding of the function of DDR proteins in eukaryotic cells.

Watch this Scientific Journal Video about Two- and Three-Dimensional Live Cell Imaging of DNA Damage Response Proteins at JoVE.com

Two- and Three-Dimensional Live Cell Imaging of DNA Damage Response Proteins

This protocol describes a method for visualizing a DNA double-strand break signaling protein activated in response to DNA damage as well as its localization during mitosis.

Double-strand breaks (DSBs) are the most deleterious DNA lesions a cell can encounter. If left unrepaired, DSBs harbor great potential to generate ...

Research

JoVE Journal

Biology

Microfabrication of Chip-sized Scaffolds for Three-dimensional Cell cultivation

Using microfabrication technologies is a prerequisite to create scaffolds of reproducible geometry and constant quality for three-dimensional cell ...

Two-photon axotomy and time-lapse confocal imaging in live zebrafish embryos

Zebrafish have long been utilized to study the cellular and molecular mechanisms of development by time-lapse imaging of the living transparent embryo.  ...

Live Imaging Of Drosophila melanogaster Embryonic Hemocyte Migrations

Live Imaging Of Drosophila melanogaster Embryonic Hemocyte Migrations

Many studies address cell migration using in vitro methods, whereas the physiologically relevant environment is that of the organism itself. Here we ...

Imaging Mismatch Repair and Cellular Responses to DNA Damage in Bacillus subtilis

Imaging Mismatch Repair and Cellular Responses to DNA Damage in Bacillus subtilis

Both prokaryotes and eukaryotes respond to DNA damage through a complex set of physiological changes. Alterations in gene expression, the redistribution ...

Fluorescent Labeling of COS-7 Expressing SNAP-tag Fusion Proteins for Live Cell Imaging

SNAP-tag and CLIP-tag protein labeling systems enable the specific, covalent attachment of molecules, including fluorescent dyes, to a protein of interest ...

Two-Photon-Based Photoactivation in Live Zebrafish Embryos

Photoactivation of target compounds in a living organism has proven a valuable approach to investigate various biological processes such as embryonic ...

Live Imaging of GFP-labeled Proteins in Drosophila Oocytes

Live Imaging of GFP-labeled Proteins in Drosophila Oocytes

The  Drosophila oocyte has been established as a versatile system for investigating  fundamental questions such as cytoskeletal function, cell ...

4D Imaging of Protein Aggregation in Live Cells

One of the key tasks of any living cell is maintaining the proper folding of newly synthesized proteins in the face of ever-changing environmental ...

Mouse Fetal Whole Intestine Culture System for Ex Vivo Manipulation of Signaling Pathways and Three-dimensional Live Imaging of Villus Development

Mouse Fetal Whole Intestine Culture System for Ex Vivo Manipulation of Signaling Pathways and Three-dimensional Live Imaging of Villus Development

Most morphogenetic processes in the fetal intestine have been inferred from thin sections of fixed tissues, providing snapshots of changes over ...

FRET Imaging in Three-dimensional Hydrogels

Imaging of F&#246;rster resonance energy transfer (FRET)&#160;is a powerful tool for examining cell biology in real-time. Studies utilizing FRET commonly ...