¹⁸F-FAC PET Visualizes Brain-Infiltrating Leukocytes in a Mouse Model of Multiple Sclerosis.

ABSTRACT: Brain-infiltrating leukocytes contribute to multiple sclerosis (MS) and autoimmune encephalomyelitis and likely play a role in traumatic brain injury, seizure, and stroke. Brain-infiltrating leukocytes are also primary targets for MS disease-modifying therapies. However, no method exists for noninvasively visualizing these cells in a living organism. 1-(2'-deoxy-2'-¹⁸F-fluoroarabinofuranosyl) cytosine (¹⁸F-FAC) is a PET radiotracer that measures deoxyribonucleoside salvage and accumulates preferentially in immune cells. We hypothesized that ¹⁸F-FAC PET could noninvasively image brain-infiltrating leukocytes. Methods: Healthy mice were imaged with ¹⁸F-FAC PET to quantify if this radiotracer crosses the blood-brain barrier (BBB). Experimenta

SUBMITTER: Chen BY 

PROVIDER: S-EPMC7198381 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature