Analysis of Chirality Effects on Stem Cell Fate Using Three-dimensional Fibrous Peptide Hydrogels

2018 ◽  
Vol 1 (3) ◽  
pp. 538-543 ◽  
Author(s):  
Hangyu Zheng ◽  
Toru Yoshitomi ◽  
Keitaro Yoshimoto
2013 ◽  
Vol 12 (5) ◽  
pp. 458-465 ◽  
Author(s):  
Sudhir Khetan ◽  
Murat Guvendiren ◽  
Wesley R. Legant ◽  
Daniel M. Cohen ◽  
Christopher S. Chen ◽  
...  

2011 ◽  
Vol 1 (5) ◽  
pp. 792-803 ◽  
Author(s):  
Hu Zhang ◽  
Sheng Dai ◽  
Jingxiu Bi ◽  
Kuo-Kang Liu

Stem cell therapy is an emerging technique which is being translated into treatment of degenerated tissues. However, the success of translation relies on the stem cell lineage commitment in the degenerated regions of interest. This commitment is precisely controlled by the stem cell microenvironment. Engineering a biomimetic three-dimensional microenvironment enables a thorough understanding of the mechanisms of governing stem cell fate. We review the individual microenvironment components, including soluble factors, extracellular matrix, cell–cell interaction and mechanical stimulation. The perspectives in creating the biomimetic microenvironments are discussed with emerging techniques.


Author(s):  
Mai T. Ngo ◽  
Victoria R. Barnhouse ◽  
Aidan E. Gilchrist ◽  
Christine J. Hunter ◽  
Joy N. Hensold ◽  
...  

AbstractBiomaterials that replicate patterns of microenvironmental signals from the stem cell niche offer the potential to refine platforms to regulate stem cell behavior. While significant emphasis has been placed on understanding the effects of biophysical and biochemical cues on stem cell fate, vascular-derived or angiocrine cues offer an important alternative signaling axis for biomaterial-based stem cell platforms. Elucidating dose-dependent relationships between angiocrine cues and stem cell fate are largely intractable in animal models and two-dimensional cell culture. In this study, we leverage microfluidic mixing devices to generate three-dimensional hydrogels containing lateral gradients in vascular density alongside murine hematopoietic stem cells (HSCs). Regional differences in vascular density can be generated via embossed gradients in cell, matrix, or growth factor density. HSCs co-cultured alongside vascular gradients reveal spatial patterns of HSC phenotype in response to angiocrine signals. Notably, decreased Akt signaling in high vessel density regions led to increased expansion of lineage-positive hematopoietic cells. This approach offers a combinatorial tool to rapidly screen a continuum of microenvironments with varying vascular, biophysical, and biochemical cues to reveal the influence of local angiocrine signals on HSC fate.


2013 ◽  
Vol 9 (2) ◽  
pp. 5170-5180 ◽  
Author(s):  
Goh Jih Her ◽  
Hsi-Chin Wu ◽  
Ming-Hong Chen ◽  
Ming-Yi Chen ◽  
Shun-Chih Chang ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document