Inhibitory assay for degradation of collagen IV by cathepsin B with a surface plasmon resonance sensor.

Abstract:

:We describe a simple method for evaluating the inhibition of collagen IV degradation by cathepsin B with a surface plasmon resonance (SPR) biosensor. The change in the SPR signal decreased with an increase in the concentration of cathepsin B inhibitors. The order of the inhibitory constant (Ki) obtained by the SPR method was CA074Me≈Z-Phe-Phe-FMK < leupeptin. This order was different from that obtained by benzyloxycarbonyl-Phe-Phe-Fluoromethylketone (Z-Phe-Phe-FMK) as a peptide substrate. The comparison of Ki suggested that CA074 and Z-Phe-Phe-FMK inhibited exopeptidase activity, and leupeptin inhibited the endopeptidase activity of cathepsin B more strongly.

journal_name

J Pharm Biomed Anal

authors

Shoji A,Suenaga Y,Hosaka A,Ishida Y,Yanagida A,Sugawara M

doi

10.1016/j.jpba.2017.06.026

subject

Has Abstract

pub_date

2017-10-25 00:00:00

pages

79-83

eissn

0731-7085

issn

1873-264X

pii

S0731-7085(17)30107-3

journal_volume

145

pub_type

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