Cass4 — Cas Scaffold Protein Family Member 4 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
CASS4 (Cas Scaffold Protein Family Member 4) encodes a member of the CAS (CT10 Regulated Kinase) family of scaffold proteins. CASS4 is expressed in neurons and immune cells and has been identified as a susceptibility gene for late-onset Alzheimer's disease (LOAD) through GWAS.[1]
CASS4 is a 442 amino acid protein that belongs to the CAS family of signaling adaptors. These proteins function as molecular scaffolds that organize signaling complexes involved in cell adhesion, migration, and survival.[2]
Key normal functions include:
CASS4 has been identified as a LOAD risk gene through GWAS meta-analyses. The function of CASS4 in AD pathogenesis is still being characterized.[1][3]
Potential Mechanisms:
CASS4 has been implicated in ALS pathogenesis, with some evidence of genetic association.
CASS4 expression pattern:
CASS4 interacts with several key proteins:
| Partner | Interaction | Function |
|---|---|---|
| SRC | SH3 domain binding | Tyrosine kinase signaling |
| FAK | Direct binding | Focal adhesion kinase |
| PTEN | Unknown | Tumor suppressor |
| PIK3CA | Unknown | PI3K signaling |
CASS4 is an AD risk gene that functions as a scaffold protein in cell adhesion and signaling pathways. While its exact role in AD pathogenesis remains under investigation, it represents a potential therapeutic target through modulation of PI3K/Akt and Src signaling pathways.
The study of Cass4 — Cas Scaffold Protein Family Member 4 has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
[1] CASS4 and Alzheimer disease risk. PMID:25428808
References
[1] Lambert JC, et al. Meta-analysis of 74,046 individuals identifies 11 new susceptibility loci for Alzheimer's disease. Nat Genet. 2013;45(12):1452-1458.
[2] Chrostek B, et al. The CAS family proteins in cellular signaling. Cell Signal. 2009;21(2):193-200.
[3] Tissari J, et al. CASS4 as Alzheimer's disease susceptibility gene. J Neurol Neurosurg Psychiatry. 2015;86(6):e4.