Karyopherin subunit alpha 7 (KPNA7) (KPNA7)

Karyopherin subunit alpha 7 (KPNA7) is a specialized member of the importin alpha family of nuclear transport adapters (UniProt: P0C1G6). It functions by recognizing nuclear localization signals (NLS) on cargo proteins and facilitating their translocation from the cytoplasm into the nucleus via the nuclear pore complex (PubMed: 22334353). Under physiological conditions, KPNA7 expression is highly restricted to oocytes and early embryos, where it is essential for maintaining nuclear integrity and supporting early developmental processes (PubMed: 20639411). However, KPNA7 is frequently overexpressed in various malignancies, particularly pancreatic ductal adenocarcinoma and breast cancer (PubMed: 24504015). In these oncogenic contexts, KPNA7 promotes cell proliferation, survival, and migration by facilitating the nuclear import of key transcription factors and other regulatory proteins. Targeting KPNA7 mRNA through RNA interference (siRNA) or antisense oligonucleotides (ASOs) has been shown to inhibit cancer cell growth in preclinical models. Because its expression is largely absent in healthy adult somatic tissues, KPNA7 represents a promising therapeutic target with a potentially favorable safety profile. Current research focuses on identifying the specific oncogenic cargoes of KPNA7 to better understand its role in tumor progression and to develop more precise inhibitors.

Other names

Importin subunit alpha-7Importin alpha 8IPOA8Karyopherin alpha 7KPNA7 mRNA

The mechanism of action for targeting KPNA7 mRNA involves the use of antisense oligonucleotides or small interfering RNAs to induce degradation of the transcript, thereby preventing the translation of the KPNA7 protein and subsequently blocking the nuclear import of oncogenic cargo proteins (PubMed: 24504015).