- Plexin signaling hampers integrin-based adhesion, leading to Rho-kinase independent cell rounding, and inhibiting lamellipodia extension and cell motility. Barberis, D., Artigiani, S., Casazza, A., Corso, S., Giordano, S., Love, C.A., Jones, E.Y., Comoglio, P.M., Tamagnone, L. FASEB J. (2004)