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. 2020 Jan 9;11(1):3. doi: 10.3390/jfb11010003

Figure 2.

Figure 2

PELB inhibited collagenase-1 (MMP-1) production in UVB-irradiated HaCaT keratinocytes. HaCaT keratinocytes were pre-treated with the indicated concentration for 24h in serum-free media, and incubated for 24 h followed by UVB (50 mJ/cm2) irradiation treated with TNF-α (10 ng/mL), collagenase-1 (MMP-1) was measured from the supernatant. Retinol (1 and 5 μM) and adenosine (1 and 5 μM) were used as positive control. ### p < 0.001 versus the control group; *** p < 0.001 versus the UVB-irradiated group.