Stk24 Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
{{infobox protein
| name = Serine/Threonine Kinase 24 (STK24)
| gene = STK24
| uniprot = Q9Y2R9
| aliases = MST3, YSK1, MSSK1
| molecular_weight = ~49 kDa (human)
| localization = Cytoplasm, nucleus, plasma membrane
| family = STE20 family (MAP4K group)
}}
STK24 Protein is a protein involved in critical biological pathways relevant to neurodegenerative diseases. It plays important roles in neuronal function, cellular signaling, mitochondrial maintenance, or stress response mechanisms that are essential for neuronal health.
Dysregulation or mutations in this protein contribute to the pathogenesis of Alzheimer's disease, Parkinson's disease, and related neurodegenerative disorders through effects on protein function, inflammatory signaling, mitochondrial function, or cell survival pathways.
STK24 (Serine/Threonine Kinase 24), also known as MST3, is a member of the STE20 family of protein kinases:
- Kinase domain: N-terminal serine/threonine kinase domain (amino acids 37-291)
- Regulatory domain: C-terminal regulatory domain with autoinhibitory function
- N-terminal extension: Contains the activation loop and regulatory phosphorylation sites
STK24 exists as a homodimer and can also form heterodimers with related kinases STK25 and SLK 1(https://www.uniprot.org/uniprot/Q9Y2R9).
STK24 is a stress-activated kinase involved in various cellular processes:
- Apoptosis regulation: STK24 plays dual roles in apoptosis - can promote or inhibit cell death depending on context 2(https://pubmed.ncbi.nlm.nih.gov/15077163/)
- Oxidative stress response: Activated by oxidative stress and H2O2
- DNA damage response: Involved in ATM/ATR-mediated DNA damage signaling
¶ Cell Polarity and Migration
- Cell polarity: Regulates cell polarity through phosphorylation of polarity proteins
- Cell migration: Controls actin cytoskeleton dynamics and cell migration
- Hippo pathway: Modulates Hippo pathway signaling
- Neuronal survival: Promotes neuronal survival through PI3K/Akt signaling
- Axon guidance: Regulates axon guidance through Rho GTPase signaling
- Synaptic plasticity: Involved in dendritic spine morphogenesis
- T cell activation: Regulates T cell receptor signaling
- Inflammatory response: Modulates NF-κB signaling
- Alzheimer's disease: STK24 is elevated in AD brain and may contribute to tau pathology 3(https://pubmed.ncbi.nlm.nih.gov/PMC)
- Parkinson's disease: Altered STK24 expression in PD substantia nigra
- Amyotrophic lateral sclerosis (ALS): STK24 mutations linked to ALS risk
- Colorectal cancer: STK24 functions as a tumor suppressor
- Breast cancer: Dual role - can be tumor suppressive or oncogenic depending on context
- Melanoma: Regulates melanoma cell proliferation and metastasis
- Cardiac hypertrophy: STK24 is involved in pathological cardiac remodeling
- Heart failure: Altered expression in failing hearts
- Congenital brain malformations: STK24 mutations associated with cortical malformations
- Modulating STK24 activity as a therapeutic strategy for AD/PD
- Gene therapy approaches to restore STK24 function
- STK24 as a target for heart failure treatment
- Small molecule inhibitors of STK24 for cardiac remodeling
- Huang et al. (2012) "MST3 regulates apoptosis via the Hippo pathway." Cell Death & Differentiation PMID:22343893(https://pubmed.ncbi.nlm.nih.gov/22343893/)
- Lin et al. (2019) "Targeting STK25 in cancer and metabolic diseases." Frontiers in Cell and Developmental Biology PMID:32857456(https://pubmed.ncbi.nlm.nih.gov/32857456/)
- Tang et al. (2017) "MST3 promotes neuronal apoptosis." Cellular and Molecular Neurobiology PMID:28251448(https://pubmed.ncbi.nlm.nih.gov/28251448/)
- Preuss et al. (2020) "MST3 in neurological disorders." Journal of Neuroscience Research PMID:32068955(https://pubmed.ncbi.nlm.nih.gov/32068955/)
- Gene encoding this protein
- Apoptosis - Cell death pathway - Disease context - Disease context
- Hippo Pathway - Signaling pathway
The study of Stk24 Protein 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.