Preparation of Thermosensitive Lignocellulose Hollow Fiber Membrane Grafted With PNIPAAm and Its Application as a Cell Culture Carrier in a RSOC Dynamic Culture

IF 3.2 3区 生物学 Q2 BIOCHEMICAL RESEARCH METHODS
Jiaqi Liu, Hao Wang, Zijiao Feng, Hailin Ma, Yuen Yee Cheng, Jie Xu, Yanchun Guan, Shuo Wu, Kedong Song
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Abstract

Currently, the cells, which are urgently required for large-scale application in biomedical-related fields, harvested by traditional trypsin digestion are usually subject to repeated digestion, leading to a reduction of cell activity. In this study, poly (N-isopropylacrylamide) (PNIPAAm) was grafted onto the lignocellulose hollow fiber membranes (HFMs) with cerium ammonium nitrate (CAN) as the initiator to prepare thermosensitive HFMs, which was combined with a rotation system of culture (RSOC) to achieve dynamic culture and non-destructive harvesting of cells from the HFMs. The results of ATR-FTIR, elemental analysis, and SEM confirmed the successful preparation of PNIPAAm-grafted-HFMs, which also showed good biocompatibility to apply for cell culture carriers. In cooling detachment, the HFMs-0.01 group could completely detach the cells within 1 h with a cell separation efficiency of more than 90%. The laminin (LN) and fibronectin (FN) harvested by cooling detachment of P8 generation PC12 cells reached 0.0531 ± 0.0032 and 2.5045 ± 0.0001 pg/cell, respectively, which were significantly higher than that by trypsin digestion. In addition, the cells on the thermosensitive HFMs proliferated fastest in RSOC at 30 rpm with higher glucose consumption and lactate metabolism than in static conditions. Moreover, the cells that had dynamic detachment at 20 rpm had the highest cell density and activity. Therefore, the thermosensitive HFMs could be applied as cell culture carriers in RSOC for cell culturing at 30 rpm and harvesting at 20 rpm, which would provide considerable potential for large-scale cell culture in vitro.

Abstract Image

接枝 PNIPAAm 的热敏木质纤维素中空纤维膜的制备及其在 RSOC 动态培养中作为细胞培养载体的应用
目前,通过传统的胰蛋白酶消化法收获的细胞急需大规模应用于生物医学相关领域,但这些细胞通常会被反复消化,导致细胞活性降低。本研究以硝酸铵铈(CAN)为引发剂,将聚(N-异丙基丙烯酰胺)(PNIPAAm)接枝到木质纤维素中空纤维膜(HFMs)上,制备了热敏HFMs,并将其与旋转培养系统(RSOC)相结合,实现了动态培养和无损收获HFMs中的细胞。ATR-傅立叶变换红外光谱、元素分析和扫描电子显微镜的结果都证实了 PNIPAAm 接枝高频膜的成功制备,并显示出良好的生物相容性,可用于细胞培养载体。在冷却分离过程中,HFMs-0.01 组能在 1 小时内完全分离细胞,细胞分离效率超过 90%。冷却分离 P8 代 PC12 细胞获得的层粘连蛋白(LN)和纤连蛋白(FN)分别达到 0.0531 ± 0.0032 pg/cell 和 2.5045 ± 0.0001 pg/cell,明显高于胰蛋白酶消化法。此外,与静态条件相比,热敏高频膜上的细胞在 30 rpm 的 RSOC 条件下增殖最快,葡萄糖消耗和乳酸代谢也更高。此外,在 20 rpm 转速下动态分离的细胞具有最高的细胞密度和活性。因此,热敏高频膜可作为细胞培养载体在RSOC中以每分钟30转的速度培养细胞,并以每分钟20转的速度收获细胞,这将为体外大规模细胞培养提供巨大的潜力。
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来源期刊
Biotechnology Journal
Biotechnology Journal Biochemistry, Genetics and Molecular Biology-Molecular Medicine
CiteScore
8.90
自引率
2.10%
发文量
123
审稿时长
1.5 months
期刊介绍: Biotechnology Journal (2019 Journal Citation Reports: 3.543) is fully comprehensive in its scope and publishes strictly peer-reviewed papers covering novel aspects and methods in all areas of biotechnology. Some issues are devoted to a special topic, providing the latest information on the most crucial areas of research and technological advances. In addition to these special issues, the journal welcomes unsolicited submissions for primary research articles, such as Research Articles, Rapid Communications and Biotech Methods. BTJ also welcomes proposals of Review Articles - please send in a brief outline of the article and the senior author''s CV to the editorial office. BTJ promotes a special emphasis on: Systems Biotechnology Synthetic Biology and Metabolic Engineering Nanobiotechnology and Biomaterials Tissue engineering, Regenerative Medicine and Stem cells Gene Editing, Gene therapy and Immunotherapy Omics technologies Industrial Biotechnology, Biopharmaceuticals and Biocatalysis Bioprocess engineering and Downstream processing Plant Biotechnology Biosafety, Biotech Ethics, Science Communication Methods and Advances.
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