AL-8810 is a novel prostaglandin F2α analog that acts as a selective antagonist of prostaglandin F2α (FP) receptor.

Prostaglandin receptors are a group of g-protein coupled receptor that exhibited a variety of functions in regulation of blood pressure and renal function; smooth muscle contraction; inhibition of plate aggregation; immune response etc.

AL-8810 has a EC50 of 261 ± 44 nM against FP receptor in the A7r5 rat thoracic aorta smooth muscle cells and a EC50 of 186 ± 63 nM in Swiss mouse 3T3 fibroblasts. In addition, AL-8810 antagonizes the response to 100 nM fluprostenol (Ki = 426 ± 63 nM) in a concentration- dependent manner in A7r5 cells. [1]

In the h-TM cells, AL-8810 antagonizes the (±) fluprostenol-induced PI turn over responses concentration dependently (Ki=2.56 ± 0.62 μm). AL-8810 also antagonizes bimatoprost, travoprost acid, latanoprost acid and travoprost acid. [2] In HCM cells, 1 μm AL-8810 blocks the 85% PGF2-induced MMP-2 secretion and 66% PGF2α-induced activation of ERK1/2. [3]

References:
1.  Griffin BW, Klimko P, Crider JY, Sharif NA. AL-8810: a novel prostaglandin F2 alpha analog with selective antagonist effects at the prostaglandin F2 alpha (FP) receptor. J Pharmacol Exp Ther. 1999 Sep;290(3):1278-84.
2.  Husain S, Jafri F, Crosson CE. Acute effects of PGF2alpha on MMP-2 secretion from human ciliary muscle cells: a PKC- and ERK-dependent process. Invest Ophthalmol Vis Sci. 2005 May;46(5):1706-13.
3.  Sharif NA, Kelly CR, Crider JY. Human trabecular meshwork cell responses induced by bimatoprost, travoprost, unoprostone, and other FP prostaglandin receptor agonist analogues. Invest Ophthalmol Vis Sci. 2003 Feb;44(2):715-21.