Nestin (NES)

Nestin is a high molecular weight (approximately 240 kDa), type VI intermediate filament protein encoded by the NES gene. It is a key cytoskeletal protein in proliferating progenitor cells—most notably neural stem cells—and is transiently expressed during early development in the central and peripheral nervous systems, as well as in myogenic and endothelial cells. Nestin has a distinctive structure: an unusually short N-terminal head and a long C-terminal tail domain, and it requires co-assembly with other intermediate filament proteins (such as vimentin or α-internexin) to form filaments. Functionally, nestin participates in the reorganization and remodeling of cytoskeletal networks, influencing cell shape, motility, proliferation, and cell stiffness. In adults, nestin is largely absent except for areas of tissue regeneration, disease, or repair—re-expressed during CNS injury, muscle regeneration, some tumors, and endothelial cell modulation. Clinically, nestin is a widely used cell lineage and disease biomarker, especially for neural stem cells and aggressive or metastatic tumors. Therapeutically, it is considered a promising target for anti-cancer and anti-fibrosis drug development, although no approved drugs target nestin directly to date. The role of nestin in tissue flexibility and invasiveness, particularly in cancer metastasis, has been demonstrated experimentally.

Other names

Nbla00170FLJ21841neuroepithelial stem cell proteinnestin

No approved drugs directly target nestin; experimental mechanisms include inhibition of nestin expression to reduce cancer invasion and metastasis. Research indicates potential targeting of nestin to affect Rab11-dependent recycling of TGF-β receptor I in fibrosis.