期刊
BIOMATERIALS
卷 30, 期 23-24, 页码 3847-3853出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biomaterials.2009.03.052
关键词
Transforming growth factor; Hepatocyte co-culture; 3D cell constructs; Microfluidics; Controlled release; Soluble microenvironment
资金
- BMRC [R-185-001-045-305]
- Ministry of Education [R-185-000-135-112]
- National Medical Research Council [R-185-000-099-213]
- Singapore-MIT Alliance Computational and Systems Biology Flagship Project [C-382-603-004-001]
- National University of Singapore
3D-microfluidic cell culture systems (3D-mu FCCSs) support hepatocyte functions in vitro which can be further enhanced by controlled presentation of 100-200 pg/ml TGF-beta 1, thus mimicking the roles of supporting cells in co-cultures. Controlled presentation of TGF-beta 1 is achieved by either direct perfusion or in situ controlled release from gelatin microspheres immobilized in the 3D-mu FCCS. Primary hepatocytes cultured for 7 days with the in situ controlled released TGF-beta 1 exhibited up to four-fold higher albumin secretion and two-fold higher phase I/II enzymatic activities, significantly improving the sensitivity of hepatocytes to acetaminophen-mediated hepatotoxicity, compared to hepatocytes cultured with directly perfused TGF-beta 1 or without TGF-beta 1. The controlled presentation of TGF-beta 1 enhanced hepatocyte functions in microfluidic systems without the complications of co-cultures, allowing for simplifications in drug testing and other hepatocyte-based applications. (C) 2009 Elsevier Ltd. All rights reserved.
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