Tunable Encapsulation of Proteins within Charged Microgels.
Tunable Encapsulation of Proteins within Charged Microgels.
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DOI:
10.1021/ma201365p
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发表时间:
2011-09-28
期刊:
影响因子:
5.5
通讯作者:
Lyon LA
中科院分区:
文献类型:
--
作者:
Smith MH;Lyon LA
The binding of cytochrome c to pH and thermoresponsive colloidal hydrogels was investigated using multiangle light scattering, measuring loading through changes in particle molar mass and root mean square radius. Loosely cross-linked microgels [composed of a random copolymer of N-isopropylacrylamide (NIPAm) and acrylic acid (AAc)] demonstrated a high loading capacity for protein. Encapsulation was dependent on both the charge characteristics of the network and the salinity of the medium. Under favorable binding conditions (neutral pH, low ionic strength), microgels containing the highest studied charge density (30 mol% AAc) were capable of encapsulating greater than 9.7 × 105 cytochrome c molecules per particle. Binding resulted in the formation of a polymer-protein complex and condensation of the polymer. Anionic microgels demonstrated a change in density ~20-fold in the presence of oppositely charged proteins. These studies of cytochrome c encapsulation represent a significant step towards direct measurement of encapsulation efficiency in complex media as we pursue responsive nanogels and microgels for the delivery of macromolecular therapeutic agents.
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影响因子:
3.8
作者:
Dickerson EB;Blackburn WH;Smith MH;Kapa LB;Lyon LA;McDonald JF
通讯作者:
McDonald JF
影响因子:
3.9
作者:
Kleinen, Jochen;Klee, Andreas;Richtering, Walter
通讯作者:
Richtering, Walter
DOI:
10.1073/pnas.0930644100
发表时间:
2003-04-29
影响因子:
11.1
作者:
Murthy, N;Xu, MC;Fréchet, JMJ
通讯作者:
Fréchet, JMJ
影响因子:
5.8
作者:
Huo, DX;Li, YN;Kobayashi, T
通讯作者:
Kobayashi, T
影响因子:
3.3
作者:
Kabanov, VA;Skobeleva, VB;Zezin, AB
通讯作者:
Zezin, AB