Definition

A lipid nanoparticle preparation of archexin, a 20-mer antisense (AS) oligodeoxynucleotide (ODN) against the proto-oncogene Akt, with potential antineoplastic activity. Upon administration of AS ODN WGI-0301, archexin binds to Akt-1 mRNA, inhibiting translation of the transcript. Suppression of Akt-1 expression may result in the inhibition of the phosphatidylinositol 3-kinase (PI3K)/Akt-mediated signaling. This may inhibit proliferation and induce apoptosis of tumor cells in which Akt-1 is overexpressed. Activation of the PI3K/Akt signaling pathway is frequently associated with tumorigenesis and dysregulated PI3K/Akt signaling may contribute to tumor resistance to a variety of antineoplastic agents.