Tracking Peptides in Cell Soup
Posted on by Dr. Francis Collins
If you think this soup looks unappealing for this year’s Thanksgiving feast, you’re right! If you were crazy enough to take a sip, you’d find it to be virtually flavorless—just a salty base (red) with greasy lipid globules (green) floating on top. But what this colorful concoction lacks in taste, it makes up for as a valuable screening tool for peptides, miniature versions of proteins that our bodies use to control many cellular processes.
In this image, William Wimley, an NIH-supported researcher at Tulane University, New Orleans, has stirred up the soup and will soon add some peptides. These peptides aren’t made by our cells, though. They’re synthesized in the lab, allowing Wimley and team to tweak their chemical structures and hopefully create ones with therapeutic potential, particularly as smart-delivery systems to target cells with greater precision and deliver biological cargoes such as drugs .