pyr-3

Pyr3 is a selective transient receptor potential canonical channel 3 inhibitor. Pyr3 inhibits TRPC3-mediated Ca2+ influx in a dose-dependent manner(IC50 = 700 nM).

Pyr6 (N-[4-[3,5-Bis(trifluoromethyl)-1H-pyrazol-1-yl]phenyl]-3-fluoro-4-pyridinecarboxamide) is a selective TRPC3 inhibitor with IC50 of 0.49 uM(Ca2+ influx inhibition in thapsigargin depleted native RBL-2H3 cells).Pyr6 is an inhibitor of Ca2+ entry, which displays higher potency to inhibit Ca2+ entry mediated by CRAC channel than by TRPC3.

Amyloid β-Protein (3-42), the precursor of Pyr peptide, serves as the foundation of the amyloid template block in Alzheimer's disease when modified to pyroglutamate Aβ (pEAβ) (3-42). This modified form, pEAβ(3-42), hastens the aggregation of Aβ(1-42) although Aβ(1-42) markedly decelerates both the primary and secondary nucleation of pEAβ(3-42) [1].

Amyloid β-Protein (3-42) TFA is a precursor of the Pyr peptide. The core of amyloid plaques in Alzheimer's disease is composed of pyroglutamate-modified Aβ (pEAβ) (3-42). Interestingly, pEAβ (3-42) accelerates the aggregation of Aβ(1-42), whereas Aβ(1-42) significantly slows both the primary and secondary nucleation of pEAβ(3-42).