The influence of flavonoid compounds on the in vitro inhibition study of a human fibroblast collagenase catalytic domain expressed in E. coli

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Title
The influence of flavonoid compounds on the in vitro inhibition study of a human fibroblast collagenase catalytic domain expressed in E. coli
Author(s)
T T H Nguyen; Y H Moon; Young Bae Ryu; Young Min Kim; S H Nam; M S Kim; A Kimura; D Kim
Bibliographic Citation
Enzyme and Microbial Technology, vol. 52, no. 1, pp. 26-31
Publication Year
2013
Abstract
The human fibroblast collagenase catalytic domain (MMP1ca) that is considered a prototype for all interstitial collagenase and plays an important role in the turnover of collagen fibrils in the matrix was expressed as an inclusion body in the Escherichia coli. The purified enzyme displayed activity with substrate Dnp-Pro-Leu-Ala-Leu-Trp-Ala-Arg-OH with a Km value of 26.61±1.42μM. The inhibition activity of the nine flavonoid compounds and gallic acid against MMP1ca was examined. Among the compounds tested, the IC50 of seven flavonoid compoundswere determined and ranged from 14.13 to 339.21μM. Epigallocatechin gallate (EGCG) showed the highest inhibition toward MMP1ca with IC50 values of 14.13±0.49μM. EGCG showed a competitive inhibition pattern with a Ki value of 10.47±0.51μM. The free binding energy of EGCG against MMP1ca was -13.07kcalmol-1, which was calculated by using Autodock 3.0.5 software and showed numerous hydrophobic and hydrogen bond interactions. Thegalloyl group of EGCG, gallocatechin gallate and epicatechin gallate was determined to be important for inhibitory activity against MMP1ca.
Keyword
CatechinEpigallocatechin gallateExpressionInhibitionMatrix metalloproteinase MMP-1Molecular docking
ISSN
0141-0229
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/j.enzmictec.2012.10.001
Type
Article
Appears in Collections:
Jeonbuk Branch Institute > Functional Biomaterial Research Center > 1. Journal Articles
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