Specific delivery of corroles to cells via noncovalent conjugates with viral proteins

被引:105
作者
Agadjanian, H
Weaver, JJ
Mahammed, A
Rentsendorj, A
Bass, S
Kim, J
Dmochowski, IJ
Margalit, R
Gray, HB
Gross, Z
Medina-Kauwe, LK
机构
[1] Cedars Sinai Med Ctr, Gene Therapeut Res Inst, Los Angeles, CA 90048 USA
[2] CALTECH, Dept Chem, Pasadena, CA 91125 USA
[3] Technion Israel Inst Technol, Dept Chem, IL-32000 Haifa, Israel
[4] IntraGene Sci, Inst Med Genet, Los Angeles, CA 90033 USA
[5] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA
关键词
capsid; corrole; metal; penton base; targeting;
D O I
10.1007/s11095-005-9225-1
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Corroles are amphiphilic macrocycles that can bind and transport metal ions, and thus may be toxic to cells. We predicted that anionic corroles would poorly enter cells due to the negatively charged cell membrane, but could be ideal tumor-targeted drugs if appropriate carriers enabled delivery into tumor cells. In this work, we test the hypothesis that recombinant cell penetrating proteins of the adenovirus (Ad) capsid form noncovalent conjugates with corroles to facilitate target-specific delivery and cell death. Corroles mixed with recombinant proteins were tested for conjugate assembly, cell penetration, stability, targeted binding, and cell killing in vitro. Sulfonated corroles entered cells only with carrier proteins, and formed stable complexes with recombinant Ad capsid proteins. ErbB receptor-targeted conjugates were cytotoxic to ErbB2-positive but not ErbB2-negative breast cancer cells, whereas molar equivalents of free corrole had no effect on these cells. Sulfonated corroles are cytotoxic to ErbB2-positive breast cancer cells when delivered by a targeted cell penetrating protein. The relatively low dose required to accomplish this compared to untargeted compounds suggests that corroles may lend themselves to targeted therapy. Importantly, the amphiphilicity of corroles enables a unique approach to bioconjugate formation whereby the carrier and drug form a stable complex by noncovalent assembly.
引用
收藏
页码:367 / 377
页数:11
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