Sustained Release of Stem Cell Factor in a Double Network Hydrogel for Ex Vivo Culture of Cord Blood-derived CD34 Cells

Overview

Journal Cell Prolif

Date 2017 Nov 17

PMID 29143396

Citations 5

Authors

Yuanhao Zhang

Xiuwei Pan

Zhen Shi

Haibo Cai

Yun Gao

Weian Zhang

Affiliations

Soon will be listed here.

Abstract

Objectives: Stem cell factor (SCF) is considered as a commonly indispensable cytokine for proliferation of haematopoietic stem cells (HSCs), which is used in large dosages during ex vivo culture. The work presented here aimed to reduce the consumption of SCF by sustained release but still support cells proliferation and maintain the multipotency of HSCs.

Materials And Methods: Stem cell factor was physically encapsulated within a hyaluronic acid/gelatin double network (HGDN) hydrogel to achieve a slow release rate. CD34 cells were cultured within the SCF-loaded HGDN hydrogel for 14 days. The cell number, phenotype and functional capacity were investigated after culture.

Results: The HGDN hydrogels had desirable properties and encapsulated SCF kept being released for more than 6 days. SCF remained the native bioactivity, and the proliferation of HSCs within the SCF-loaded HGDN hydrogel was not affected, although the consumption of SCF was only a quarter in comparison with the conventional culture. Moreover, CD34 cells harvested from the SCF-loaded HGDN hydrogels generated more multipotent colony-forming units (CFU-GEMM).

Conclusion: The data suggested that the SCF-loaded HGDN hydrogel could support ex vivo culture of HSCs, thus providing a cost-effective culture protocol for HSCs.

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Sustained release of stem cell factor in a double network hydrogel for ex vivo culture of cord blood-derived CD34 cells.

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