Host Defense and Inflammation

Welcome to HK Lab

AID-SpliceBase is a comprehensive, multi-layer database that combines multiple dimensions of transcriptomic data from autoimmune patient and control samples to analyze differential splicing events (A3SS, A5SS, MXE, RI, and SE), differential transcript/isoform usage and, differential gene expression in control vs disease population. Alternative splicing and Isoform switching are fundamental post-transcriptional regulatory events that drives the overall transcriptome diversity and can greatly affect the immune homeostasis. Dysregulation in these mechanisms is increasingly recognized as a key driver of inflammation and pathology in autoimmune diseases.

PRRsPAMPsCytokinesPhagocytosisComplement

Dataset statistics

Select a disease to see aggregated condition samples, or pick a specific dataset to view its condition distribution.

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Splicing Mechanics

Mechanisms of Alternative Splicing

Pre-mRNA → Mature mRNA isoforms

1
Constitutive splicing

All introns are removed and all exons are joined — produces a single, invariant mRNA transcript.

Pre-mRNAE1E2E3E4spliceMature mRNAE1E2E3E4
1 isoform
2
Exon skipping / inclusion

A cassette exon is either included or excluded, generating two isoforms with or without that exon's protein domain. Most common AS event in mammals.

skipE1E2E3E4
E1E2E3E4+ E3
E1E4E3 skipped
2 isoforms
3
Alternative 5′ splice site

Two competing donor sites at the 5′ end of an intron produce isoforms with longer or shorter upstream exons.

E1E2aE3E4
E1E3E4short E2
E1+E3E4long E2
2 isoforms
4
Alternative 3′ splice site

Two competing acceptor sites at the 3′ end of an intron create isoforms that differ in the start of the downstream exon.

E1E2altE3E4
E1E2E3E4short E3
E1E2+E3E4long E3
2 isoforms
5
Intron retention

An intron is retained in the mature transcript instead of being spliced out — often leads to NMD or altered protein function. Common in plants and lower eukaryotes.

E1E2E3E4
E1E2E3E4spliced
E1E2IE3E4+ intron
2 isoforms
6
Mutually exclusive exons

Only one of two competing exons is included in any single transcript — both are never present together. Diversifies binding specificity or enzymatic activity (e.g. Drosophila Dscam).

mutually exclusiveE1E2aE2bE4
E1E2aE4uses E2a
E1E2bE4uses E2b
2 isoforms
Flanking exon (E1/E4)
Exon A (E2)
Exon B (E3)
Terminal exon
Alt. exon extension
Retained intron (I)
Mutually excl. exon B
Alt. partial exon
Regulated splice event
Intron (V-mark)

Comprehensive Transcriptomic Insights

Dive deep into multi-dimensional transcriptomic data to uncover novel insights into alternative splicing events and their crucial roles in autoimmune diseases.

Comprehensive Transcriptomic Insights

Advanced Data Visualization

Leverage interactive tools and dynamic charts that provide a comprehensive understanding of gene expression, isoform usage, and intricate splicing networks.

Advanced Data Visualization

Disease-Specific Analysis

Analyze differences between control and disease populations to identify key post-transcriptional regulatory events driving immune homeostasis and pathology.

Disease-Specific Analysis