CTNNA1 and metastatic malignant neoplasm: Since the pathways such as PI3K (AKT) and MAPK are significantly upregulated in metastatic cancers, we performed the Western blot to see the effect at a protein level after intracellular delivery of CTNNA1 and CTNNB1 siRNAs using CA nanoparticles in 4T1 cells.