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  • Title: Heparin interacting protein mediated assembly of nano-fibrous hydrogel scaffolds for guided stem cell differentiation.
    Author: Tan H, Zhou Q, Qi H, Zhu D, Ma X, Xiong D.
    Journal: Macromol Biosci; 2012 May; 12(5):621-7. PubMed ID: 22454284.
    Abstract:
    A new methodology is developed to conjugate hyaluronic acid (HA) hydrogel with novel nano-fibrous architectures via non-covalent assembly that specifically allows for targeted adipose-derived stem cells (ASCs) differentiation and soft tissue engineering. The assembly of non-covalently associated hydrogel network produced via the interaction of a low molecular weight heparin (LMWH) modified HA derivative and heparin interacting protein (HIP). The multifunctional star poly(ethylene glycol) (PEG) and HIP copolymer has the capability to mediate the non-covalent assembly of nano-fibrous HA hydrogel networks via affinity interactions with LMWH. The effect of the HIP mediation on in vitro gelation, rheological characteristics, degradation, equilibrium swelling, adipose-derived stem cells (ASCs) proliferation and differentiation of nano-fibrous hydrogel is examined. The results suggest the potential utility of this unique design of the bioactive nano-fibrous HA hydrogel in directing the differentiation of ASCs and adipogenesis in ECM-mimetic scaffolds in vitro. These studies demonstrate that this nano-fibrous HA hydrogel can render the formulation of a therapeutically effective platform for in vitro adipogenesis applications.
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