Related Experiment Video
Updated: Jul 15, 2025

10:46
Dissection of Enhancer Function Using Multiplex CRISPR-based Enhancer Interference in Cell Lines
Published on: June 2, 2018
9.4K
Genomic context sensitizes regulatory elements to genetic disruption
Raquel Ordoñez1,2, Weimin Zhang1,2, Gwen Ellis1,3
1Institute for Systems Genetics, NYU School of Medicine, New York, NY 10016, USA.
Biorxiv : the Preprint Server for Biology
|October 2, 2023
Summary
Investigating enhancer function requires understanding genomic context. This study used Big-IN technology to analyze the Igf2/H19 locus, revealing context-dependent enhancer activity and previously unknown regulatory elements.
Area of Science:
- Genomics
- Molecular Biology
- Epigenetics
Background:
- Enhancer function is often studied in isolation, limiting understanding of its role within native genomic contexts.
- The murine Igf2/H19 locus is a model system for studying enhancer selectivity and imprinting control.
Conclusions:
- Genomic context significantly impacts enhancer function, even for well-studied elements.
- The Big-IN approach enables large-scale manipulation of complete loci to study locus architecture and function.
- Findings suggest broader implications for understanding enhancer clusters across the genome.
Related Concept Videos
Epigenetic Regulation
3.1K
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
X-chromosome...
3.1K
Gene-Environment Interactions
346
Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
346
Genomic Imprinting and Inheritance
34.6K
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
34.6K
Cis-regulatory Sequences
9.9K
Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...
9.9K
What is Genetic Engineering?
74.3K
Overview
74.3K
Combinatorial Gene Control
8.4K
Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
8.4K

