Alternative Splicing
Alternative Splicing - Related Videos
02:18
Alternative RNA Splicing
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2020
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity. There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
02:18
Alternative RNA Splicing
0 Views •
2023
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity. There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
11:48
Detection of Alternative Splicing During Epithelial-Mesenchymal Transition
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Cited by 2 •
2014
Alternative splicing regulation has been shown to contribute to the epithelial-mesenchymal transition (EMT), an essential cellular program in various physiological and pathological processes. Here we describe a method utilizing an inducible EMT model for the detection of alternative splicing during EMT.
01:32
RNA Splicing
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2019
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
08:35
Identification of Alternative Splicing and Polyadenylation in RNA-seq Data
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Cited by 3 •
2021
Alternative splicing (AS) and alternative polyadenylation (APA) expand the diversity of transcript isoforms and their products. Here, we describe bioinformatic protocols to analyze bulk RNA-seq and 3' end sequencing assays to detect and visualize AS and APA varying across experimental conditions.
FAQs
The spliceosome removes introns and joins selected exons, but it does not necessarily connect every exon in the same arrangement. Its splice-site choices determine which mature messenger RNA is produced from a precursor transcript. Because different exon combinations can be retained or omitted, this processing step directly influences which protein variant a cell can make.
Regulatory proteins and sequence elements help guide splice-site choice during RNA processing. Their effects can favor particular exon combinations rather than others, producing distinct mature messenger RNAs from the same precursor. This regulation gives cells a way to adjust the protein variants generated from a gene instead of relying only on changes in the gene itself.
A single gene can yield multiple mature messenger RNAs when RNA processing selects different combinations of exons. These transcripts can then specify different protein variants, increasing the range of proteins available to cells. The mechanism therefore expands functional diversity at the level of gene expression, even when the underlying set of genes remains unchanged.
Alternative splicing allows cells to tailor gene activity to particular tissues and developmental stages. Differences in regulatory conditions can alter splice-site selection, so the same gene may generate different messenger RNA and protein variants in different cellular contexts. This context dependence helps explain how specialized cell types arise while using shared genetic information.
Studying alternative splicing can reveal how RNA processing contributes to cellular specialization and how cells adjust gene activity under changing conditions. Researchers can examine which protein variants may arise from a gene and relate those patterns to tissues, developmental stages, or environmental conditions. This makes splicing analysis relevant to broader questions about gene regulation.
Disease research examines alternative splicing because disrupted splice-site selection can change the messenger RNAs and protein variants produced by cells. Such disruption is associated with cancer and inherited disorders, making splicing patterns relevant to understanding disease mechanisms. Findings can also support therapeutic development by identifying RNA-processing changes that may require correction or control.
Cancer and inherited disorders can involve abnormal RNA processing, causing cells to produce inappropriate messenger RNA or protein variants. Because alternative splicing helps determine which exon combinations are expressed, disruption of this process can affect cellular behavior or inherited biological functions. Comparing normal and disease-associated splicing patterns therefore provides useful biological context for disease research.
Alternative splicing provides a therapeutic research focus because regulatory proteins, sequence elements, and splice-site choices influence the protein variants generated from genes. Understanding these controls may help researchers address disease-associated RNA-processing disruptions. Its relevance is especially clear for cancer and inherited disorders, where altered splicing is connected to disease mechanisms and treatment development.