Atp1b1-KO Mouse

Atp1b1, encoding the Na,K-ATPase β subunit, is a key regulator of the Na+ and K+ electrochemical gradients across the plasma membrane, essential for cellular activity. It is involved in diverse biological processes such as maintaining cellular homeostasis, membrane potential, and is associated with pathways like focal adhesion [2,3,4].

In antiviral innate immunity, increased expression of Atp1b1 after DNA and RNA virus infections can inhibit viral replication and up-regulate the levels of IFNs, IFN-stimulated genes, and inflammatory cytokines. It does so by interacting with TRAF3 and TRAF6, potentiating their ubiquitination and leading to increased phosphorylation of downstream molecules [1].

In diffuse large B-cell lymphoma (DLBCL), Atp1b1 is overexpressed in DLBCL cell lines compared to CD19 + B cells. Down-regulation of Atp1b1 inhibits DLBCL cell proliferation, migration, invasion, and adhesion, suggesting it could be a diagnostic biomarker and therapeutic target [2].

In cytogenetically normal acute myeloid leukemia (CN-AML), high Atp1b1 expression is associated with shorter overall survival and event-free survival, and up-regulation of certain oncogenes is associated with high Atp1b1 expression, indicating its leukemogenicity [3].

In conclusion, Atp1b1 plays crucial roles in maintaining cellular ion gradients and normal cellular functions. Studies have revealed its significance in antiviral responses, and its potential as a biomarker and therapeutic target in diseases like DLBCL and CN-AML. Research on Atp1b1 using various models helps to better understand its functions in different biological processes and disease conditions.