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Biomimetic Macroporous PCL Scaffolds for Ex Vivo Expansion of Cord Blood‐Derived CD34 + Cells with Feeder Cells Support
Author(s) -
Pan Xiuwei,
Sun Qiong,
Zhang Yuanhao,
Cai Haibo,
Gao Yun,
Shen Yongjia,
Zhang Weian
Publication year - 2017
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.201700054
Subject(s) - ex vivo , cd34 , microbiology and biotechnology , chemistry , stem cell , haematopoiesis , extracellular matrix , mesenchymal stem cell , stromal cell , tissue engineering , biomedical engineering , in vitro , biology , biochemistry , cancer research , medicine
Ex vivo expansion of hematopoietic stem cells (HSCs) with most current methods can hardly satisfy clinical application requirement. While in vivo, HSCs efficiently self‐renew in niche where they interact with 3D extracellular matrix and stromal cells. Therefore, co‐cultures of CD34 + cells and mesenchyme stem cells derived from human amniotic membrane (hAMSCs) on the basis of biomimetic macroporous three‐dimensional (3D) poly(ε‐caprolactone) (PCL) scaffolds are developed, where scaffolds and hAMSCs are applied to mimic structural and cellular microenvironment of HSCs. The influence of scaffolds, feeder cells, and contact manners on expansion and stemness maintenance of CD34 + cells is investigated in this protocol. Biomimetic scaffolds‐dependent co‐cultures of CD34 + cells and hAMSCs can effectively promote the expansion of CD34 + cells; meanwhile, indirect contact is superior to direct contact. The combination of biomimetic scaffolds and hAMSCs represents a new strategy for achieving clinical‐scale ex vivo expansion of CD34 + cells.