Revealing looping organization of mammalian photoreceptor genes using chromosome conformation capture (3C) assays

Guang Hua Peng, Shiming Chen

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

Chromosome conformation capture (3C) is a biochemical assay to reveal higher order chromosomal organizations mediated by physical contact between discrete DNA segments in vivo. Chromosomal organizations are involved in transcriptional regulation of a number of genes in various cell types. We have adapted 3C for analyzing the intrachromosomal looping organization of rod and cone photoreceptor genes in the mammalian retina. Here, we describe a detailed protocol for 3C assays on whole mouse retinas. Using the M-cone opsin gene as an example, we demonstrate how to genetically distinguish 3C signals from cones versus rods in retinal 3C assays. We also describe the challenges and key points of 3C design and performance as well as appropriate controls and result interpretations.

Original languageEnglish
Title of host publicationRetinal Development
Subtitle of host publicationMethods and Protocols
PublisherHumana Press Inc.
Pages305-318
Number of pages14
ISBN (Print)9781617798474
DOIs
StatePublished - 2012

Publication series

NameMethods in Molecular Biology
Volume884
ISSN (Print)1064-3745

Keywords

  • Chromosomal conformation capture (3C)
  • Intrachromosomal loops
  • Opsin genes
  • Photoreceptors
  • Retina
  • Transcriptional regulation

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