WASP-family verprolin homologous protein 1 (WAVE1)

WASP-family verprolin homologous protein 1 (WAVE1), encoded by the WASF1 gene, is a critical scaffolding protein involved in the regulation of the actin cytoskeleton [1][2]. It operates as part of the pentameric WAVE regulatory complex (WRC), which translocates to the plasma membrane upon activation by the small GTPase Rac1 to stimulate the Arp2/3 complex [4]. This activation leads to the formation of branched actin networks, which are essential for the generation of lamellipodia and driving cell motility [4]. In the central nervous system, WAVE1 is highly expressed and plays a vital role in neuronal morphogenesis, including the development of axons and dendritic spines, which are fundamental for synaptic plasticity and cognitive function [1][3]. Pathologically, WAVE1 is frequently upregulated in various malignancies, where it promotes tumor cell invasion and metastasis by enhancing migratory capacity [5]. Furthermore, de novo mutations in WASF1 have been identified as a cause of Sohal-Siddiqui syndrome, a neurodevelopmental disorder characterized by intellectual disability and autistic features [3]. While WAVE1 is a promising therapeutic target for inhibiting cancer metastasis and treating certain neurological conditions, there are currently no FDA-approved drugs that directly target this protein [2][5]. [1] UniProt (Q92558); [2] NCBI Gene (8936); [3] Sohal et al. (2021) PMID: 33536283; [4] Takenawa & Suetsugu (2007) PMID: 17183360; [5] Kurisu & Takenawa (2009) PMID: 19923894.

Other names

WASF1WAVESCAR1Homolog of Dictyostelium scar 1WASP family member 1Protein WAVE1

Acts as a downstream effector of Rac1 within the WAVE regulatory complex (WRC) to activate the Arp2/3 complex, which nucleates branched actin filament assembly at the leading edge of cells.