Abstract
Thymosin, composed of many peptides, is distributed in animal and has immunomodulating effects. However, many factors could affect its bioactivity. Chitosan microspheres containing pig thymosin (CMPT) were prepared through W/O emulsion cross-linking method. In this study, thymosin activity between pig-thymosin and CMPT was investigated through E-rosette test and mouse spleen lymphocyte proliferation (MPLP) experiment in vitro. Results showed that CMPT has the same immunomodulatory activity as pig thymosin. When pig-thymosin was 1.5 μg / ml, E-rosette binding rate was 63%, and E-rosette binding rate of CMPT reached 60%。MPLP rate was 73.3% and 68.5%, respectively. CMPT have the capacity to keep the E-rosette binding and MPLP activity of pig thymosin. This may help to improve traditional formulation and bioavailability of thymosin, and expand its scope of application in clinic.
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