Visualizing DNA replication by single-molecule analysis of replicated DNA

Summary: Single-molecule analysis of replicated DNA (SMARD) is a unique technique that enables visualization of DNA replication at specific genomic regions at single-molecule resolution. Here, we present a protocol for visualizing DNA replication by SMARD. We describe steps for pulse labeling DNA, f...

Full description

Bibliographic Details
Main Authors: Advaitha Madireddy, Jeannine Gerhardt
Format: Article
Language:English
Published: Elsevier 2023-12-01
Series:STAR Protocols
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2666166723006883
_version_ 1797405364623245312
author Advaitha Madireddy
Jeannine Gerhardt
author_facet Advaitha Madireddy
Jeannine Gerhardt
author_sort Advaitha Madireddy
collection DOAJ
description Summary: Single-molecule analysis of replicated DNA (SMARD) is a unique technique that enables visualization of DNA replication at specific genomic regions at single-molecule resolution. Here, we present a protocol for visualizing DNA replication by SMARD. We describe steps for pulse labeling DNA, followed by isolating and stretching of genomic DNA. We then detail the detection of the replication at chromosomal regions through immunostaining and fluorescence in situ hybridization. Using SMARD, we can visualize replication initiation, progression, termination, and fork stalling.For complete details on the use and execution of this protocol, please refer to Norio et al. (2001) and Gerhardt et al. (2014).1,2 : Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.
first_indexed 2024-03-09T03:08:57Z
format Article
id doaj.art-559c3663b80e4f2fb23ece13c1a61704
institution Directory Open Access Journal
issn 2666-1667
language English
last_indexed 2024-03-09T03:08:57Z
publishDate 2023-12-01
publisher Elsevier
record_format Article
series STAR Protocols
spelling doaj.art-559c3663b80e4f2fb23ece13c1a617042023-12-04T05:24:07ZengElsevierSTAR Protocols2666-16672023-12-0144102721Visualizing DNA replication by single-molecule analysis of replicated DNAAdvaitha Madireddy0Jeannine Gerhardt1Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA; Department of Pediatrics Hematology/Oncology, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, NJ, USA; Corresponding authorThe Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, NY, USA; Department of Obstetrics and Gynecology, Weill Cornell Medicine, New York, NY, USA; Corresponding authorSummary: Single-molecule analysis of replicated DNA (SMARD) is a unique technique that enables visualization of DNA replication at specific genomic regions at single-molecule resolution. Here, we present a protocol for visualizing DNA replication by SMARD. We describe steps for pulse labeling DNA, followed by isolating and stretching of genomic DNA. We then detail the detection of the replication at chromosomal regions through immunostaining and fluorescence in situ hybridization. Using SMARD, we can visualize replication initiation, progression, termination, and fork stalling.For complete details on the use and execution of this protocol, please refer to Norio et al. (2001) and Gerhardt et al. (2014).1,2 : Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.http://www.sciencedirect.com/science/article/pii/S2666166723006883Cell BiologyIn Situ HybridizationMicroscopyMolecular BiologySingle Cell
spellingShingle Advaitha Madireddy
Jeannine Gerhardt
Visualizing DNA replication by single-molecule analysis of replicated DNA
STAR Protocols
Cell Biology
In Situ Hybridization
Microscopy
Molecular Biology
Single Cell
title Visualizing DNA replication by single-molecule analysis of replicated DNA
title_full Visualizing DNA replication by single-molecule analysis of replicated DNA
title_fullStr Visualizing DNA replication by single-molecule analysis of replicated DNA
title_full_unstemmed Visualizing DNA replication by single-molecule analysis of replicated DNA
title_short Visualizing DNA replication by single-molecule analysis of replicated DNA
title_sort visualizing dna replication by single molecule analysis of replicated dna
topic Cell Biology
In Situ Hybridization
Microscopy
Molecular Biology
Single Cell
url http://www.sciencedirect.com/science/article/pii/S2666166723006883
work_keys_str_mv AT advaithamadireddy visualizingdnareplicationbysinglemoleculeanalysisofreplicateddna
AT jeanninegerhardt visualizingdnareplicationbysinglemoleculeanalysisofreplicateddna