| KLK5 | Kallikrein-related peptidase 5 |
| VD3 | 1,25 (OH)2 vitamin D3 |
| TLR2 | Toll-like receptor 2 |
| CC | Coptis chinensis Franch |
| CCE | Coptis chinensis Franch water Extract |
| HEKn | Human Epidermal Keratinocytes |
| CAMP | Cathelicidin Antimicrobial Peptides |
| Boc-V-P-R-AMC | Boc-Val-Pro-Arg-7-amido-4-methylcoumarin hydrochloride |
| SCTE | Stratum Corneum Tryptic Enzyme |
| RFU | Relative Fluorescence Units |
| rhKLK5 | recombinant human KLK5 |
| FITC | Fluorescein Isothiocyanate |
| HMEC-1 | Human Microvascular Endothelial Cells |
| HPLC | High-Performance Liquid Chromatography |
| TFA | Trifluoroacetic Acid |
| ICH | International Conference on Harmonisation |
| WST | Water-soluble Tetrazolium salt |