Rosenberg AJ, Liu H, Tu Z. A practical process for the preparation of [(32)P]S1P and binding assay for S1P receptor ligands.
Appl Radiat Isot 2015;
102:5-9. [PMID:
25931137 DOI:
10.1016/j.apradiso.2015.04.010]
[Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 03/17/2015] [Accepted: 04/15/2015] [Indexed: 10/23/2022]
Abstract
Sphingosine-1-phosphate receptors (S1PRs) are important regulators of vascular permeability, inflammation, angiogenesis and vascular maturation. Identifying a specific S1PR PET radioligand is imperative, but it is hindered by the complexity and variability of current for binding affinity measurement procedures. Herein, we report a streamlined protocol for radiosynthesis of [(32)P]S1P with good radiochemical yield (36-50%) and high radiochemical purity (>99%). We also report a reproducible procedure for determining the binding affinity for compounds targeting S1PRs in vitro.
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