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Malyhon

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When maleimideterminated
PEG is replaced by methoxy-terminated PEG, the
PHBV-PEGOCH3 surfaces are produced. The adsorbed serum
amount is even lower, with 32 ( 2 ng/cm2 on PHBV-PEG-
(2.3k)OCH3 and 83 ( 4 ng/cm2 on PHBV-PEG(5k)OCH3
surfaces, respectively, suggesting it is the terminal maleimide groups
that attract additional proteins, likely through the reaction with
sulfhydryls present in serum proteins at a neutral pH level. This clue
helps to explain the phenomenon observed in cell culture experiments,
that is, why cell growth is not suppressed on the PHBVPEGMAL
surface. It is clear that under cell culture conditions (37 C
and long contact with proteins in the culture medium),more proteins
could chemically bind to the terminal maleimide groups, which in
turn promotes cell growth.

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Malyhon: ½ð±Ò+8, ·­ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-03-22 11:50:10
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