PAWS1 controls cytoskeletal dynamics and cell migration through association with the SH3 adaptor CD2AP

J Cell Sci. 2018 Jan 10;131(1):jcs202390. doi: 10.1242/jcs.202390.

Abstract

Our previous studies of PAWS1 (protein associated with SMAD1; also known as FAM83G) have suggested that this molecule has roles beyond BMP signalling. To investigate these roles, we have used CRISPR/Cas9 to generate PAWS1-knockout U2OS osteosarcoma cells. Here, we show that PAWS1 plays a role in the regulation of the cytoskeletal machinery, including actin and focal adhesion dynamics, and cell migration. Confocal microscopy and live cell imaging of actin in U2OS cells indicate that PAWS1 is also involved in cytoskeletal dynamics and organization. Loss of PAWS1 causes severe defects in F-actin organization and distribution as well as in lamellipodial organization, resulting in impaired cell migration. PAWS1 interacts in a dynamic fashion with the actin/cytoskeletal regulator CD2AP at lamellae, suggesting that its association with CD2AP controls actin organization and cellular migration. Genetic ablation of CD2AP from U2OS cells instigates actin and cell migration defects reminiscent of those seen in PAWS1-knockout cells.This article has an associated First Person interview with the first authors of the paper.

Keywords: Actin cytoskeleton; CD2AP; Cell migration; FAM83G; PAWS1.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Actin Cytoskeleton / metabolism*
  • Actins / metabolism
  • Adaptor Proteins, Signal Transducing / genetics
  • Adaptor Proteins, Signal Transducing / metabolism*
  • CRISPR-Cas Systems
  • Cell Line, Tumor
  • Cell Movement*
  • Cytoskeletal Proteins / genetics
  • Cytoskeletal Proteins / metabolism*
  • Focal Adhesions / metabolism
  • Gene Knockout Techniques
  • HEK293 Cells
  • Humans
  • Intracellular Signaling Peptides and Proteins / genetics
  • Intracellular Signaling Peptides and Proteins / metabolism*
  • Signal Transduction

Substances

  • Actins
  • Adaptor Proteins, Signal Transducing
  • CD2-associated protein
  • Cytoskeletal Proteins
  • FAM83G protein, human
  • Intracellular Signaling Peptides and Proteins