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【作者】Pignatello, R. and T. M. Pecora

【文题】"Conjugation of thymopentin (TP5) with lipoamino
acid residues increases the hydrolytic stability and preserves the biological activity."

【期刊名,年份,卷(期),起止页码】(2007). Pharmazie 62(9): 663-7

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[ Last edited by colinxu007 on 2008-2-19 at 14:46 ]
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shanfei01104221

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文献类型:  期刊论文
正 题 名: Conjugation of thymopentin (TP5) with lipoamino acid residues increases the hydrolytic stability and preserves the biological activity.
个人作者姓名: Pignatello,R; Pecora,TM; 
作者单位: Dipartimento di Scienze Farmaceutiche, Citta Universitaria, viale A. Doria, 6, 1-95125 Catania, Italy. r.pignatello@unict.it
刊  名: Pharmazie,Die  浏览此刊所有论文
出版年份: 2007
年 卷 期: vol.62  浏览此期所有论文
页 码: P.663-667
总页数: 5
分 类 号: R9
关 键 词: Assault by stabbing; Thymopentin; Parents; Acids; LAA; 胸腺喷丁; 双亲; 酸类; 
正文语种: eng
文 摘: Three conjugates of thymopentin (TP5), an oligopeptide derived from the thymic hormone thymopoietin, with lipoamino acid (LAAs) have been obtained by solid-phase peptide synthesis. Both linear and dendrimer structures have been prepared to achieve enhanced lipophilicity. After incubation in foetal calf serum the lipophilic conjugates showed a higher stability to hydrolysis with respect to the parent drug. In a preliminary in vitro biological assay, LAA conjugates showed the ability to retain or improve the growth inhibitory activity of the parent peptide against a human lymphoblastoid cell line. The interaction of the prepared conjugates with 1,2-L-alpha-dimiristoylphosphatidylcholine multilamellar liposomes, chosen as a biological membrane model, was studied. The higher lipophilicity of TP5 conjugates was reflected in a better penetration through phospholipid bilayers, whose thermal behaviour was altered in a concentration-dependent way. Such enhanced affinity of TP5-LAA conjugates for this membrane model could anticipate a better interaction with cell membranes and, ultimately, an improved biological activity of compounds compared with the parent pentapeptide.
shanfei
2楼2008-02-19 14:04:28
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