1-Deoxygalactonojirimycin (hydrochloride)

Target: α-galactosidase

IC50: 40 nM

1-Deoxygalactonojirimycin (hydrochloride) is a competitive inhibitor of α-galactosidase, with the IC50 value of 40 nM [1]. 1-Deoxygalactonojirimycin (hydrochloride) is used to promote lysosomal delivery of unstable proteins in lysosomal storage disorders, like Fabry disease. Fabry disease is a rare genetic lysosomal storage disease, inherited in an X-linked manner which is caused by mutations in the α-galactosidase gene that commonly lead to enzyme instability, misfolding, and degradation.

In Vivo: In transgenic mice expressed human mutant α-galactosidase A, treatment with 1-Deoxygalactonojirimycin at a dosage of approximately 3 mg/kg body weight/day could significantly reduce globotriaosylceramide storage in the kidney. Besides, no abnormality of blood chemistry and pathological tissue damage was found in mice treated with 1-Deoxygalactonojirimycin at about 30 mg/kg body weight/day for 9 weeks [2].

References:
[1] Asano N, Ishii S, Kizu H, et al.  In vitro inhibition and intracellular enhancement of lysosomal α‐galactosidase A activity in Fabry lymphoblasts by 1‐deoxygalactonojirimycin and its derivatives[J]. FEBS Journal, 2000, 267(13): 4179-4186.
[2] Ishii S, Chang H, Yoshioka H, et al.  Preclinical Efficacy and Safety of 1-Deoxygalactonojirimycin in Mice for Fabry Disease[J]. Journal of Pharmacology and Experimental Therapeutics, 2009, 328(3): 723-731.