Stability and bioactivity of chitosan as a transfection agent in primary human cell cultures: A case for chitosan-only controls.

Stability and bioactivity of chitosan as a transfection agent in primary human cell cultures: A case for chitosan-only controls.
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DOI:
10.1016/j.carbpol.2017.10.021
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发表时间:
2018-01-15
影响因子:
11.2
通讯作者:
Kirsch WM
Kirsch WM
中科院分区:
化学1区
文献类型:
--
作者:
Cupino TL;Watson BA;Cupino AC;Oda K;Ghamsary MG;Soriano S;Kirsch WM

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Chitosan polymers (Cs), from which microparticles (CsM) may be precipitated to deliver various intracellular payloads, are generally considered biologically inert. We examined the impact of cell culture conditions on CsM size and the effect of chitosan on CD59 expression in primary human smooth muscle cells. We found that particle concentration and incubation time in biological buffers augmented particle size. Between pH 7.0 and pH 7.5, CsM size increased abruptly. We utilized CsM containing a plasmid with a gene for CD59 (pCsM) to transfect cells. Both CD59 mRNA and the number of CD59-positive cells were increased after pCsM treatment. Unexpectedly, CsM also augmented the number of CD59-positive cells. Cs alone enhanced CD59 expression more potently than either pCSM or CsM. This observation strongly suggests that chitosan is in fact bioactive and that chitosan-only controls should be included to avoid misattributing the activity of the delivery agent with that of the payload.
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