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ITREN

Lecture Series

52 - Surface Modification of inorganic biomaterials for bioapplications : bone regeneration, biosensor and drug delivery system.

Writer :
ITREN (2016-11-06)
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24606

Speaker : Dr. Hyoung Woo Choi, ITREN

Location : Room 103 Pharmacy Building, Dankook University

Date: 2016-10-31

Abstract: Inorganic biomaterial is one of the leading used materials for tissue regeneration, biosensing substrate, and drug delivery carrier and surface modification technique is a key factor to improve the inherent property. Among the various inorganic biomaterials, hydroxyapatite nano-crystal is very frequently used for bone tissue engineering and drug delivery system.

The use of hydroxyapatite nano-crystal not only plays a significant role in maintaining the mechanical properties of the natural bone but also offers a favorable environment for osteocoduction, protein adhesion, and osteoblast proliferation. In addition, the feature that an acidic environment induces the dissolution of hydroxyapatite nano-crystal into nontoxic ions has attracted researchers to the develop various pH-responsive drugs and gene delivery system.

 

Here I will introduce a novel approach to the fabrication of porous scaffolds with surface-immobilized nano-hydroxyapatite is developed for effective bone tissue engineering and light-responsive gatekeeper for smart nitric oxide delivery using hydroxyapatite and mesoporous silica nano-particle. The hydroxyapatite coating on mesoporous silica surface is expected to act as a shielding layer for the nitric oxide donors but is degraded by acids generated from chemical reagent, which induce exposure of the nitric oxide donors to the physical environment.


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