3.4. Biocompatibility of fusion peptides
The biocompatibility of each fusion peptide was verified using a lactate dehydrogenase (LDH) assay and HDFn cells (Fig. 7). Each LDH activity was normalized with the LDH activity using a lysis buffer as 100%. Normalized LDH activity of each fusion peptide does not show any significant cytotoxicity depending on various concentrations compared to the negative control. Therefore, fusion peptides were biocompatible to apply to the cells under a concentration of 200 μg/mL.