alexa Influences of electrolytes and glucose on formulation of carbonate apatite nanocrystals for efficient gene delivery to mammalian cells.
General Science

General Science

Research & Reviews: Journal of Botanical Sciences

Author(s): Hossain S, Tada S, Akaike T, Chowdhury EH, Hossain S, Tada S, Akaike T, Chowdhury EH, Hossain S, Tada S, Akaike T, Chowdhury EH, Hossain S, Tada S, Akaike T, Chowdhury EH

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Abstract Genetic manipulation of human cells through delivery of a functional gene or a gene-silencing element is an attractive approach to treat critical diseases very precisely and effectively. Extensive research on the genetic basis of human diseases with complete sequencing of human genome has revealed many vital genes as possible targets in gene therapy programs. On the other hand, to facilitate cell- or tissue-directed delivery of genes and gene-silencing nucleic acid sequences, both genetic and chemical engineering approaches have led to the generation of various viral and nonviral carriers. However, considering the issues of both safety and efficacy, none of the existing vectors is an ideal candidate for clinical use. We recently established pH-sensitive inorganic nanocrystals of carbonate apatite with capability of efficient intracellular delivery and release of associated DNA molecules for subsequent protein expression. Here we show a new synthetic approach for carbonate apatite crystals with stronger affinity toward DNA, leading to significant increment in both transgene delivery and expression. Moreover, CaCl(2) and NaCl, existing as the major electrolytes in the bicarbonate-buffered solution, dose-dependently govern particle size and eventually internalization and expression of particle-associated DNA. Copyright (c) 2009 Elsevier Inc. All rights reserved. This article was published in Anal Biochem and referenced in Research & Reviews: Journal of Botanical Sciences

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