Engineered polymer-media interfaces for the long-term self-renewal of human embryonic stem cells.

Engineered polymer-media interfaces for the long-term self-renewal of human embryonic stem cells.
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DOI:
10.1016/j.biomaterials.2011.05.058
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发表时间:
2011-10
期刊:
影响因子:
14
通讯作者:
Healy, Kevin E.
Healy, Kevin E.
中科院分区:
工程技术1区
文献类型:
--
作者:
Irwin, Elizabeth E.;Gupta, Rohini;Dashti, Derek C.;Healy, Kevin E.

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我们开发了一种合成聚合物界面,用于人胚胎干细胞(hESC)在特定培养基中的长期自我更新。我们成功地将 hESC 在化学成分明确的 mTeSR™ 1 培养基中的氨丙基甲基丙烯酰胺 (APMAAm) 水凝胶界面上培养了 20 多次传代,并通过免疫染色和定量 RT-PCR 研究证明了多个 hESC 系的多能性。 hESC 增殖和多能性标记的结果在定性和定量上与在 Matrigel™ 包被的基质上培养的细胞相似。从机制上讲,mTeSR™ 1 培养基中的牛血清白蛋白 (BSA) 对于 APMAAm 水凝胶界面上的细胞粘附至关重要。这项研究独特地确定了一种强大的长期培养表面,用于 hESC 的自我更新,无需在完全化学成分确定的培养基中使用生物涂层(例如肽、蛋白质或 Matrigel™),并采用适合临床规模细胞扩增的实用培养技术。
We have developed a synthetic polymer interface for the long-term self-renewal of human embryonic stem cells (hESCs) in defined media. We successfully cultured hESCs on hydrogel interfaces of aminopropylmethacrylamide (APMAAm) for over 20 passages in chemically-defined mTeSR™ 1 media and demonstrated pluripotency of multiple hESC lines with immunostaining and quantitative RT-PCR studies. Results for hESC proliferation and pluripotency markers were both qualitatively and quantitatively similar to cells cultured on Matrigel™ -coated substrates. Mechanistically, it was resolved that bovine serum albumin (BSA) in the mTeSR™ 1 media was critical for cell adhesion on APMAAm hydrogel interfaces. This study uniquely identified a robust long-term culture surface for the self-renewal of hESCs without the use of biologic coatings (e.g., peptides, proteins, or Matrigel™) in completely chemically-defined media that employed practical culturing techniques amenable to clinical-scale cell expansion.
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