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Article

Cytotoxicity, Hemolysis, and Acute in Vivo Toxicity of Dendrimers Based on Melamine, Candidate Vehicles for Drug Delivery

Supporting Info

Hui-Ting Chen,^† Michael F. Neerman,^† Alan R. Parrish,*^‡ and Eric E. Simanek*^†

Contribution from the Department of Chemistry, Texas A&M University, and Department of Medical Pharmacology and Toxicology, Texas A&M University Health Science Center, College Station, Texas 77843-3255

J. Am. Chem. Soc., 2004, 126 (32), pp 10044–10048

DOI: 10.1021/ja048548j

Publication Date (Web): July 22, 2004

†

Texas A&M University.

In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed.

‡

Texas A&M University Health Science Center.

simanek@tamu.edu

Abstract

A small library of dendrimers was prepared from a common precursor that is available in 5 g scale in five linear steps at 56% overall yield. The precursor is a generation three dendrimer that displays 48 peripheral sites by incorporating AB₄ surface groups. Manipulation of these sites provided six dendrimers that vary in the chemistry of the surface group (amine, guanidine, carboxylate, sulfonate, phosphonate, and PEGylated) that were evaluated for hemolytic potential and cytotoxicity. Cationic dendrimers were found to be more cytotoxic and hemolytic than anionic or PEGylated dendrimers. The PEGylated dendrimer was evaluated for acute toxicity in vivo. No toxicityneither mortality nor abnormal blood chemistry based on blood urea nitrogen levels or alanine transaminase activitywas observed in doses up to 2.56 g/kg ip and 1.28 g/kg iv.