Journal article
The effects of interactive mechanical and biochemical niche signaling on osteogenic differentiation of adipose-derived stem cells using combinatorial hydrogels
Acta biomaterialia, v 9(3), pp 5475-5483
01 Mar 2013
PMID: 23153761
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Stem cells reside in a multi-factorial environment containing biochemical and mechanical signals. Changing biochemical signals in most scaffolds often leads to simultaneous changes in mechanical properties, which makes it difficult to elucidate the complex interplay between niche cues. Combinatorial studies on cell-material interactions have emerged as a tool to facilitate analyses of stem cell responses to various niche cues, but most studies to date have been performed on two-dimensional environments. Here we developed three-dimensional combinatorial hydrogels with independent control of biochemical and mechanical properties to facilitate analysis of interactive biochemical and mechanical signaling on adipose-derived stem cell osteogenesis in three dimensions. Our results suggest that scaffold biochemical and mechanical signals synergize only at specific combinations to promote bone differentiation. Leading compositions were identified to have intermediate stiffness (similar to 55 kPa) and low concentration of fibronectin (10 mu g ml(-1)), which led to an increase in osteocalcin gene expression of over 130-fold. Our results suggest that scaffolds with independently tunable niche cues could provide a powerful tool for conducting mechanistic studies to decipher how complex niche cues regulate stem cell fate in three dimensions, and facilitate rapid identification of optimal niche cues that promote desirable cellular processes or tissue regeneration. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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Details
- Title
- The effects of interactive mechanical and biochemical niche signaling on osteogenic differentiation of adipose-derived stem cells using combinatorial hydrogels
- Creators
- Michelle Nii - Stanford UniversityJanice H. Lai - Stanford UniversityMichael Keeney - Stanford UniversityLi-Hsin Han - Stanford UniversityAnthony Behn - Stanford UniversityGalym Imanbayev - Stanford UniversityFan Yang - Stanford University
- Publication Details
- Acta biomaterialia, v 9(3), pp 5475-5483
- Publisher
- Elsevier
- Number of pages
- 9
- Grant note
- McCormick Faculty Award Grant Stanford Bio-X Interdisciplinary Initiative Program Donald E. and Delia B. Baxter Foundation
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics; Drexel University
- Web of Science ID
- WOS:000315536000007
- Scopus ID
- 2-s2.0-84873157322
- Other Identifier
- 991020100183404721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Engineering, Biomedical
- Materials Science, Biomaterials