Prion Protein at the Leading Edge: Its Role in Cell Motility

Area of Science:

• Cell Biology
• Molecular Biology
• Biochemistry

Background:

• Cell motility is fundamental to embryonic development, wound healing, immune response, and cancer metastasis.
• This complex process involves coordinated actions of cytoskeletal, membrane, adhesion, and extracellular proteins.
• The cellular prion protein (PrP^C) is increasingly recognized for its involvement in various cell motility aspects.

Purpose of the Study:

• To review the critical role of PrP^C in diverse cellular motility processes.
• To elucidate the molecular mechanisms underlying PrP^C's function in cell movement.
• To highlight PrP^C's significance in both physiological and pathological contexts.

Main Methods:

• Literature review of studies investigating PrP^C and cell motility.
• Analysis of PrP^C's interactions with extracellular matrix proteins, cell surface receptors, and cytoskeletal components.
• Examination of PrP^C's involvement in processes like axonal growth, transendothelial migration, and epithelial-mesenchymal transition.

Main Results:

• PrP^C, located on the cell membrane, acts as a scaffold protein, modulating cell motility.
• It mediates interactions between key motility elements, including integrins and matrix proteins.
• PrP^C regulates cell adhesion molecule stability and dynamics of the cell adhesion cytoskeleton.

Conclusions:

• PrP^C plays a pivotal role in regulating cell motility through intra- and extracellular interactions.
• Understanding PrP^C's mechanisms is vital for tissue homeostasis and addressing pathological conditions like cancer.
• This review provides insights into PrP^C's multifaceted functions in cell movement.