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Fabrication Of Micropatterned Alginate-gelatin And K-carrageenan Hydrogels Of Defined Shapes Using Simple Wax Mould Method As A Platform For Stem Cell/induced Pluripotent Stem Cells (iPSC) Culture.

Shanmugam Bhaskar Vignesh, Aswathi Gopalakrishnan, Poorna M R, Shantikumar Vasudevan Nair, Rangasamy Jayakumar, Ullas Mony
Published 2018 · Medicine, Chemistry
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Micropatterning techniques involve soft lithography, which is laborious, expensive and restricted to a narrow spectrum of biomaterials. In this work we report, first time employment of patterned wax moulds for generation of micropatterned alginate-gelatin and κ-carrageenan (κ-CRG) hydrogel systems by a novel, simple and cost effective method. We generated and characterized uniform and reproducible micropatterned hydrogels of varying sizes and shapes such as square projections, square grooves, and circular grids and crisscrossed hillocks. The rheological analysis showed that κ-carrageenan hydrogels had higher gel strength when compared to alginate-gelatin hydrogels. Human Mesenchymal stem cells (hMSCs) and Human Induced Pluripotent Stem Cells (hiPSCs) were found to be cytocompatible with these hydrogels. This micropatterned hydrogel system may have potential application in tissue engineering and also in understanding the basic biology behind the stem cell/iPSC fate.
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