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¡¾×÷Õß¡¿Pignatello, R. and T. M. Pecora ¡¾ÎÄÌâ¡¿"Conjugation of thymopentin (TP5) with lipoamino acid residues increases the hydrolytic stability and preserves the biological activity." ¡¾ÆÚ¿¯Ãû£¬Äê·Ý£¬¾í£¨ÆÚ£©£¬ÆðÖ¹Ò³Âë¡¿(2007). Pharmazie 62(9): 663-7 ÒòΪʱ¼ä½ô¼±£¡¾ÍÂé·³´ó¼ÒÁË£¡ [ Last edited by colinxu007 on 2008-2-19 at 14:46 ] |
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shanfei01104221
Òø³æ (СÓÐÃûÆø)
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colinxu007(½ð±Ò+3,VIP+0):лл°ïÖú£¡
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Íò·½ÓÐhttp://168.160.184.242/wf/mst.dl ... P=I&MFN=5658285 ÎÄÏ×ÀàÐÍ£º¡¡ ÆÚ¿¯ÂÛÎÄ Õý Ìâ Ãû£º Conjugation of thymopentin (TP5) with lipoamino acid residues increases the hydrolytic stability and preserves the biological activity. ¸öÈË×÷ÕßÐÕÃû£º Pignatello,R;¡¡Pecora,TM;¡¡ ×÷Õßµ¥Î»£º Dipartimento di Scienze Farmaceutiche, Citta Universitaria, viale A. Doria, 6, 1-95125 Catania, Italy. r.pignatello@unict.it ¿¯¡¡¡¡Ãû£º Pharmazie,Die ä¯ÀÀ´Ë¿¯ËùÓÐÂÛÎÄ ³ö°æÄê·Ý£º 2007 Äê ¾í ÆÚ£º vol.62 ä¯ÀÀ´ËÆÚËùÓÐÂÛÎÄ Ò³¡¡Â룺 P.663-667 ×ÜÒ³Êý£º 5 ·Ö Àà ºÅ£º R9 ¹Ø ¼ü ´Ê£º Assault by stabbing;¡¡Thymopentin;¡¡Parents;¡¡Acids;¡¡LAA;¡¡ÐØÏÙÅç¶¡;¡¡Ë«Ç×;¡¡ËáÀà;¡¡ ÕýÎÄÓïÖÖ£º eng ÎÄ¡¡Õª£º 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. |

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