標題: Effects of recombinant lysostaphin on cytotoxicity and interleukin-8 level in normal human epidermal keratinocytes cell line
作者: Chan, EC
Chang, CA
Wu, TZ
Lin, YL
生物科技學系
Department of Biological Science and Technology
關鍵字: recombinant lysostaphin;cytotoxicity;interleukin-8
公開日期: 1-十一月-1998
摘要: The normal human epidermal keratinocyte (NHEK) was used to evaluate the cytotoxicity of recombinant lysostaphin. As determined with the Neutral Red (NR) cytotoxicity assay, the midpoint toxicity value (NR50) after 48 h exposure was 16 +/- 0.4 g lysostaphin/l. Lysostaphin cytotoxicity effect is much less than the surface active agent, sodium laurate. However, the NR,, value after 48-h exposure was 1.9 +/- 0.02 g/l for S. aureus lysate derived from the bacterial lytic action of lysostaphin. A linear increase in interleukin-8 (IL-8) level in NHEK cells from resting levels of 65 +/- 3 pg/ml to peak of 760 +/- 15 pg/ml during the first 9 hours was noted for the cells treated with 800 mg lysostaphin/l. S. aureus lysate has the same effect on the induction of IL-8 levels. The induced rises in IL-8 were lysostaphin and S. aureus lysate concentration dependence.
URI: http://dx.doi.org/10.1023/A:1005469929961
http://hdl.handle.net/11536/148035
ISSN: 0141-5492
DOI: 10.1023/A:1005469929961
期刊: BIOTECHNOLOGY LETTERS
Volume: 20
起始頁: 1053
結束頁: 1056
顯示於類別:期刊論文