Induction of metalloproteinase 9 secretion from human keratinocytes by pleuran (beta-glucan from Pleurotus ostreatus).
Glucan preparations, primarily modified water-soluble glucans, are involved in the activation of the body's natural defense mechanisms and in the acceleration of the skin's wound-healing processes. Pleuran, an insoluble beta-D-glucan in hydrogel form, offers a natural alternative to more common chemically derivated soluble beta-D-glucans. Pleuran was applied to human keratinocyte primary cultures, and after 24 h of incubation the release of matrix metalloproteinase 9 (MMP-9) and metalloproteinase 2 (MMP-2) by stimulated keratinocytes was detected using gelatine zymography. There was a concentration-dependent increase in pro-MMP-9 release after treatment with pleuran over the concentration range of 2 to 200 microg/ml, but pro-MMP-2 was detected at a constant level. Moreover, the active forms of both MMPs were not detectable, indicating that in vitro autoactivation of these zymogens did not occur. The results indicate that pleuran is a potent keratinocyte stimulator of proMMP-9 release, which implies its application in dermatological therapies.
Institute of Zoology, Slovak Academy of Sciences, Dúbravská cesta 9, 845 06 Bratislava, Slovakia. Juraj.Majtan@savba.sk
Juraj
J
Majtán
Pawan
P
Kumar
Ján
J
Koller
Jana
J
Dragúnová
Ján
J
Gabriz
D002478:Cells, Cultured; D006801:Humans; D015603:Keratinocytes / Q000166:cytology / Q000187:drug effects / Q000201:enzymology* / Q000378:metabolism; D007700:Kinetics; D020780:Matrix Metalloproteinase 9 / Q000378:metabolism*; D020076:Pleurotus / Q000737:chemistry; D047071:beta-Glucans / Q000302:isolation & purification / Q000494:pharmacology*
D047071:beta-Glucans; D020780:Matrix Metalloproteinase 9