Thiolation mediated pegylation platform to generate functional universal red blood cells.

Thiolation mediated pegylation platform to generate functional universal red blood cells.
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硫醇化介导的聚乙二醇化平台可产生功能性通用红细胞。

DOI:
10.1080/10731190600974657
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发表时间:
2007
期刊:
Artificial cells, blood substitutes, and immobilization biotechnology
影响因子:
--
通讯作者:
Acharya,SeetharamaA
Acharya,SeetharamaA
中科院分区:
--
文献类型:
--
作者:
Nacharaju,Parimala;Manjula,BelurN;Acharya,SeetharamaA

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在保留其正电荷的情况下在蛋白质氨基上添加延伸臂的PEG化有效地掩蔽红细胞的A和D抗原。在本研究中,比较了通过PEG化方案掩蔽RBC抗原的效率,所述PEG化方案在添加和不添加延伸臂的情况下不保存电荷。PEG-5000通过添加延伸臂与RBC的缀合比其他方案更有效地掩蔽D抗原。需要PEG-5 K和PEG-20 K的组合来掩蔽A抗原,而不考虑PEG化方法。通过延伸臂增加的PEG化RBC的氧亲和力促进PEG化。涉及PEG链缀合而不添加延伸臂的方案不改变RBC的氧亲和力。聚乙二醇化方案的组合是产生具有良好水平的氧亲和力的通用红细胞的替代策略。
The PEGylation that adds an extension arm on protein amino groups with the conservation of their positive charge masks the A and D antigens of erythrocytes efficiently. In the present study, the efficiency of masking the antigens of RBC by PEGylation protocols that do not conserve the charge with and without adding extension arms is compared. The conjugation of PEG-5000 to RBCs through the addition of extension arms masked the D antigen more efficiently than the other protocol. A combination of PEG-5 K and PEG-20 K is needed to mask the A antigen, irrespective of the PEGylation approach. The oxygen affinity of the PEGylated RBCs increased by the extension arm facilitated PEGylation. The protocol involving the conjugation of PEG-chains without adding extension arm did not alter the oxygen affinity of RBCs. A combination of PEGylation protocols is an alternate strategy to generate universal red blood cells with good levels of oxygen affinity.
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