Mimicking stem cell niches to increase stem cell expansion.

Mimicking stem cell niches to increase stem cell expansion.
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DOI:
10.1016/j.copbio.2008.07.010
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发表时间:
2008-10
影响因子:
7.7
通讯作者:
Miller, William M.
Miller, William M.
中科院分区:
工程技术1区
文献类型:
--
作者:
Dellatore, Shara M.;Garcia, A. Sofia;Miller, William M.

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Niches regulate lineage-specific stem cell self-renewal vs. differentiation in vivo and are comprised of supportive cells and extracellular matrix components arranged in a 3-dimensional topography of controlled stiffness in the presence of oxygen and growth factor gradients. Mimicking stem cell niches in a defined manner will facilitate production of the large numbers of stem cells needed to realize the promise of regenerative medicine and gene therapy. Progress has been made in mimicking components of the niche. Immobilizing cell-associated Notch ligands increased the self-renewal of hematopoietic (blood) stem cells. Culture on a fibrous scaffold that mimics basement membrane texture increased the expansion of hematopoietic and embryonic stem cells. Finally, researchers have created intricate patterns of cell-binding domains and complex oxygen gradients.
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