Development of Transient Recombinant Expression and Affinity Chromatography Systems for Human Fibrinogen.

Development of Transient Recombinant Expression and Affinity Chromatography Systems for Human Fibrinogen.
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DOI:
10.3390/ijms23031054
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发表时间:
2022-01-19
影响因子:
5.6
通讯作者:
Hudson NE
Hudson NE
中科院分区:
生物学2区
文献类型:
--
作者:
Popovic G;Kirby NC;Dement TC;Peterson KM;Daub CE;Belcher HA;Guthold M;Offenbacher AR;Hudson NE

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Fibrin forms the structural scaffold of blood clots and has great potential for biomaterial applications. Creating recombinant expression systems of fibrinogen, fibrin’s soluble precursor, would advance the ability to construct mutational libraries that would enable structure–function studies of fibrinogen and expand the utility of fibrin as a biomaterial. Despite these needs, recombinant fibrinogen expression systems, thus far, have relied on the time-consuming creation of stable cell lines. Here we present tests of a transient fibrinogen expression system that can rapidly generate yields of 8–12 mg/L using suspension HEK Expi293TM cells. We report results from two different plasmid systems encoding the fibrinogen cDNAs and two different transfection reagents. In addition, we describe a novel, affinity-based approach to purifying fibrinogen from complex media such as human plasma. We show that using a high-affinity peptide which mimics fibrin’s knob ‘A’ sequence enables the purification of 50–75% of fibrinogen present in plasma. Having robust expression and purification systems of fibrinogen will enable future studies of basic fibrin(ogen) biology, while paving the way for the ubiquitous use of fibrin as a biomaterial.
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