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Updated: Jun 4, 2026
10:25
Using the E1A Minigene Tool to Study mRNA Splicing Changes
Published on: April 22, 2021
Chromatin and alternative splicing.
1Departamento de Fisiología, Biología Molecular y Celular, Laboratorio de Fisiología y Biología Molecular, IFIBYNE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.
Cold Spring Harbor Symposia on Quantitative Biology
|February 4, 2011
Summary
Chromatin structure and histone modifications influence alternative splicing. Neuron depolarization alters histone acetylation, affecting gene splicing, while targeted histone modifications can control exon inclusion in messenger RNA (mRNA).
Area of Science:
- Molecular Biology
- Epigenetics
- Gene Regulation
Background:
- Alternative splicing impacts over 90% of human genes.
- Transcription and splicing are tightly coupled processes.
- Chromatin structure and histone modifications play roles in regulating gene expression.
Purpose of the Study:
- To explore the link between chromatin modifications and alternative splicing.
- To present new evidence on how histone acetylation and methylation affect splicing choices.
- To demonstrate targeted manipulation of histone marks to control alternative splicing.
Main Methods:
- Analysis of histone modifications (H3K9ac, H3K9me2, H3K27me3) in response to stimuli.
- Investigating chromatin relaxation and nucleosome positioning.
- Utilizing small interfering RNAs (siRNAs) for targeted histone modification induction.
- Studying alternative splicing of neural cell adhesion molecule and fibronectin genes.
Main Results:
- Neuron depolarization induced intragenic histone acetylation (H3K9ac) and chromatin relaxation, leading to exon skipping.
- Targeted increase of H3K9me2 and H3K27me3 near a fibronectin gene exon promoted its inclusion.
- Evidence suggests nucleosome positioning in exons influences splicing outcomes.
Conclusions:
- Chromatin structure and dynamic histone modifications are critical regulators of alternative splicing.
- Physiological stimuli can alter histone marks to modulate splicing.
- Targeted epigenetic modifications offer a mechanism to control alternative splicing events.
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