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[Preparation of CD123 mono-antibody modified tanshinone ⅡA loaded immunoliposome and its in vitro evaluation].
Zhongguo Zhong Yao za Zhi = Zhongguo Zhongyao Zazhi = China Journal of Chinese Materia Medica 2017 June
In the study, we developed a novel formulation, CD123 mono-antibody (mAb) modified tanshinone ⅡA loaded immunoliposome (CD123-TanⅡA-ILP) to achieve the targeted drug delivery for leukemia cells. Orthogonal test was used to optimize liposome preparation, and the TanⅡA-loaded PEGylated liposomes (TanⅡA-LP) of S100PC-Chol-(mPEG2000-DSPE)-TanⅡA at 19∶5∶1∶1 molar ratio were prepared by the thin film hydration-probe ultrasonic method. A post-insertion method was applied to prepare CD123-TanⅡA-ILP via thiolated mAb conjugated to the terminal of maleimide-PEG2000-DSPE. The cellular uptake assay was measured by flow cytometry, and the inhibitory effect of CD123-TanⅡA-ILP on NB4 cells proliferation was tested by using MTT assay. The results of cellular uptake assay showed that CD123-ILP could significantly increase the drug uptake of NB4 cells as compared with free drugs and LP. The IC₅₀ values at 48 h incubation were 20.87, 11.71, 7.17 μmol•L⁻¹ respectively for TanⅡA,TanⅡA-LP and CD123-TanⅡA-ILP. CD123-ILP demonstrated a potential and promising targeted drug delivery strategy for acute myelogenous leukemia (AML) treatment.
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