Developing an Anticancer Copper(II) Pro-Drug Based on the His242 Residue of the Human Serum Albumin Carrier IIA Subdomain

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• 作者：Jinxu Qi ; Yao Zhang ; Yi Gou ; Zhenlei Zhang ; Zuping Zhou ; Xiaoyang Wu ; Feng Yang ; Hong Liang
• 刊名：Molecular Pharmaceutics
• 出版年：2016
• 出版时间：May 2, 2016
• 年：2016
• 卷：13
• 期：5
• 页码：1501-1507
• 全文大小：434K
• 年卷期：0
• ISSN：1543-8392

文摘

To increase delivery efficiency, anticancer activity, and selectivity of anticancer metal agents in vivo, we proposed to develop the anticancer metal pro-drug based on His242 residue of the human serum albumin (HSA) carrier IIA subdomain. To confirm our hypothesis, we prepared two Cu(II) compounds [Cu(P4 mT)Cl and Cu(Bp44 mT)Cl] by modifying Cu(II) compound ligand structure. Studies with two HSA complex structures revealed that Cu(P4 mT)Cl bound to the HSA subdomain IIA via hydrophobic interactions, but Cu(Bp44 mT)Cl bound to the HSA subdomain IIA via His242 replacement of a Cl atom of Cu(Bp44 mT)Cl, and a coordination to Cu²⁺. Furthermore, Cu(II) compounds released from HSA could be regulated at different pHs. In vivo data revealed that the HSA-Cu(Bp44 mT) complex increased copper’s selectivity and capacity of inhibiting tumor growth compared to Cu(Bp44 mT)Cl alone.