Characteristics of low molecular weight heparin production by an ultrafiltration membrane bioreactor using maltose binding protein fused heparinase I
Ye, Fengchun, Kuang, Ying, Chen, Shuo, Zhang, Chong, Chen, Yin and Xing, Xin-Hui. (2009) Characteristics of low molecular weight heparin production by an ultrafiltration membrane bioreactor using maltose binding protein fused heparinase I. Biochemical Engineering Journal, Vol.46 (No.2). pp. 193-198. ISSN 1369-703XFull text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.bej.2009.05.007
Low molecular weight heparin (LMWH) produced by the degradation of heparin has been widely used for clinical use, because it retains heparin's anticoagulant activity while has fewer side effects. In this study, a bioprocess for efficient production of LMWH was established by all ultrafiltration (UF) membrane bioreactor using maltose-binding protein (MBP)-heparinase I. The absorption of the reaction mixture at 235 nm (A(235)) was used as an indicator for monitoring the enzymatic reaction and product quality. When A(235) of the reaction mixture reached 45, the produced LMWH reached a weight-average molecular weight (M(w)) of approximately 5038 Da, a number-average molecular weight (M(n)) of 3498 Da, the anti-factor Xa activity of 154.95 +/- 5.80 IU/mg, and the ratio of anti-factor Xa activity to anti-factor IIa activity of 2.2, which all meet the standard of European Pharmacopoeia 5.0. The average molecular weight of LMWH showed a good linear relationship with the increment in A(235). These results indicated that the qualified LMWH could be produced by the UF membrane bioreactor using the fusion enzyme. (C) 2009 Elsevier B.V. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||Q Science > Q Science (General)|
|Divisions:||Faculty of Science > Life Sciences (2010- )|
|Journal or Publication Title:||Biochemical Engineering Journal|
|Publisher:||Elsevier Science BV|
|Number of Pages:||6|
|Page Range:||pp. 193-198|
|Access rights to Published version:||Restricted or Subscription Access|
|Funder:||Grant of NSF Key Projects of China|
|Grant number:||20336010, 20836004|
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