mg-101

MG-101 (Calpain inhibitor I) is a cell-permeable and potent inhibitor of cysteine proteases including calpains and lysosomal cathepsins.

PLM-101 is an anticancer compound orally active against acute myeloid leukemia by targeting FLT3 and RET. It impedes RET function, promoting autophagic breakdown of FLT3, and suppresses the PI3K and Ras ERK pathways, contributing to its anti-leukemic effects. The compound's antitumor efficacy is demonstrated in both a mouse MV4-11 flank xenograft model (doses of 3 and 10 mg kg; po) and an allogeneic xenograft mouse model (dose of 40 mg kg; po) [1].

Kynurenic acid, an active metabolite of tryptophan, is synthesized through a kynurenine intermediate by kynurenine aminotransferases (KATs). It acts as an antagonist of both NMDA and AMPA receptors, as well as α7 nicotinic acetylcholine receptors (nAChRs; EC50s = 235, 101, and 7 µM, respectively), and functions as an agonist for the aryl hydrocarbon receptor (AhR) and G protein-coupled receptor 35 (GPR35; EC50s = 1.4 and 39 µM, respectively). In a neonatal rat model of cerebral hypoxic-ischemia, induced by carotid artery ligation, administration of kynurenic acid at 300 mg kg prevents weight loss in the lesioned hemisphere. Additionally, at concentrations of 1 and 5 mg ml, it protects against neurodegeneration in the rhabdomere of the eye in an Htt93QtransgenicDrosophila model of Huntington's disease. Elevated levels of kynurenic acid in the cerebrospinal fluid have been observed in patients with schizophrenia.