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Preparation of Chitosan/Alginate-ellagic Acid Sustained-release Microspheres and their Inhibition of Preadipocyte Adipogenic Differentiation

[ Vol. 20 , Issue. 14 ]

Author(s):

Chengshi Ding, Haidan Bi, Deya Wang, Meiling Kang, Zhongjing Tian, Yingxia Zhang, Hongkai Wang, Tianshun Zhu* and Jing Ma*   Pages 1213 - 1222 ( 10 )

Abstract:


Objective: In this study, chitosan/alginate-ellagic acid sustained-release microspheres were prepared, and the effect of sustained-release microspheres on preadipocyte adipogenic differentiation was analyzed.

Methods: Chitosan/alginate-ellagic acid microspheres were prepared and identified by scanning electron microscopy (SEM) and infrared spectroscopy (IR). The drug release rates were measured at pH 6.8, 7.0, 7.2, 7.4 to determine sustained release of ellagic acid from microspheres. The effects of 0.1, 1, 10 mg/L chitosan/alginate-ellagic acid microsphere on 3T3-F442A preadipocyte proliferation were determined by Methyl thiazolyl tetrazolium assay (MTT), and cell morphology was checked by hematoxylin/ eosin staining (HE staining). The effect of chitosan/alginate-ellagic acid microspheres on preadipocyte adipogenic differentiation was also determined by Oil red O staining, and lipogenesis was measured by isopropanol extraction. The molecular mechanism was investigated by detecting the mRNA expression of CCAAT/enhancer binding protein alpha (C/EBPα) and peroxisome proliferatorsactivated receptor gamma (PPARγ).

Results: Chitosan/alginate-ellagic acid sustained-release microspheres were successfully prepared, and the inhibition of proliferation and adipogenic differentiation of preadipocytes was found to be dosedependent. The mechanism of differentiation inhibition was found to be closely related to the expression of transcription factor C/EBPα and PPARγ.

Conclusion: Chitosan/alginate can be used as a good material to prepare ellagic acid sustained-release microspheres, and these microspheres can be used for treating the obesity.

Keywords:

Chitosan/alginate, ellagic acid sustained-release microspheres, preparation, adipogenic differentiation, Methyl thiazolyl tetrazolium assay (MTT), preadipocyte.

Affiliation:

College of Life Science, Zaozhuang University, Zaozhuang 277160, College of Food Science and Pharmaceutical Engineering, Zaozhuang University, Zaozhuang 277160, College of Life Science, Zaozhuang University, Zaozhuang 277160, College of Life Science, Zaozhuang University, Zaozhuang 277160, College of Life Science, Zaozhuang University, Zaozhuang 277160, College of Life Science, Zaozhuang University, Zaozhuang 277160, College of Life Science, Zaozhuang University, Zaozhuang 277160, College of Life Science, Zaozhuang University, Zaozhuang 277160, College of Life Science, Zaozhuang University, Zaozhuang 277160

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