Formulation: A solid
Formal Name: S-[(2R)-2,3-bis[(1-oxohexadecyl)oxy]propyl]-L-cysteinyl-L-seryl-L-lysyl-L-lysyl-L-lysyl-L-lysine, trifluoroacetate salt
Purity: ≥98%
Formula Markup: C65H126N10O12S • XCF3COOH
Formula Weight: 1271,8
Shelf life (days): 1460
Notes: Pam2CSK4 is a synthetic bacterial lipopeptide and an agonist of the toll-like receptor 2 (TLR2).{62180} It is selective for the TLR2/TLR6 heterodimer over TLR2/TLR1 (EC50s = 0.015 and 4.12 ng/ml, respectively, in reporter assays using human receptors). Pam2CSK4 increases the levels of inducible nitric oxide synthase (iNOS) and the production of nitric oxide (NO) in RAW 264.7 macrophages when used at a concentration of 100 ng/ml.{62181} It stimulates osteoclast formation, induces gingival inflammation, and decreases alveolar bone mass in a mouse model of periodontitis when administered at a dose of 5 µg/animal.{62182} Pam2CSK4 (10 µg/vaccine), when used as an adjuvant, reduces parasite burden and enhances the response to antigen, as measured by IgG levels, in a mouse model of lymphatic filariasis induced by B. malayi.{62183}