Compositions and methods for enhancing receptor-mediated cellular internalization
First Claim
1. A method for delivering an agent to cells at a site where uptake is desired comprising administering to the cells at the site where uptake is desired a composition comprising(a) a viscous material having an apparent viscosity between 10 and 2000 Poise and approximately the same apparent viscosity, at a shear stress of between approximately 1 and 200 Pascal at a strain rate approximately that of endocytosis, as the cytosolic fluid of the cell to which the agent is to be delivered, (b) a compound to be delivered, and (c) an enhancer in an amount effective to enhance expression of or binding to receptors eliciting receptor-mediated endocytosis on the cells at the site where uptake is desired.
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Accused Products
Abstract
Compositions and methods for improving cellular internalization of one or more compounds are disclosed. The compositions include a compound to be delivered and a biocompatible viscous material, such as a hydrogel, lipogel, or highly viscous sol. The composition also include, or are administered in conjunction with, an enhancer in an amount effective to maximize expression of or binding to receptors and enhance RME of the compound into the cells. This leads to high transport rates of compounds to be delivered across cell membranes, facilitating more efficient delivery of drugs and diagnostic agents. Compositions are applied topically orally, nasally, vaginally, rectally, and ocularly. The enhancer is administered with the composition or separately, either systemically or preferably locally. The compound to be delivered can also be the enhancer.
65 Citations
22 Claims
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1. A method for delivering an agent to cells at a site where uptake is desired comprising administering to the cells at the site where uptake is desired a composition comprising
(a) a viscous material having an apparent viscosity between 10 and 2000 Poise and approximately the same apparent viscosity, at a shear stress of between approximately 1 and 200 Pascal at a strain rate approximately that of endocytosis, as the cytosolic fluid of the cell to which the agent is to be delivered, (b) a compound to be delivered, and (c) an enhancer in an amount effective to enhance expression of or binding to receptors eliciting receptor-mediated endocytosis on the cells at the site where uptake is desired.
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14. A composition for delivering an agent to cells at a site where uptake is desired comprising:
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(a) a viscous fluid having an apparent viscosity between 10 and 2000 Poise and approximately the same apparent viscosity, at a shear stress of between approximately 1 and 200 Pascal at a strain rate approximately that of endocytosis, as the cytosolic fluid of the cell to which the agent is to be delivered, (b) a compound to be delivered, and (c) an enhancer in an amount effective to enhance expression of or binding to receptors eliciting receptor-mediated endocytosis on the cells at the site where uptake is desired. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A kit for delivering a compound to cells comprising:
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a first composition comprising a viscous fluid and the compound to be delivered, wherein the viscous fluid has an apparent viscosity between 10 and 2000 Poise and approximately the same apparent viscosity, at a shear stress of between approximately 1 and 200 Pascal at a strain rate approximately that of endocytosis, as the cytosolic fluid of the cell to which the agent is to be delivered, and a second composition comprising an enhancer in an amount effective to enhance expression of receptors eliciting receptor-mediated endocytosis on the cells, thereby to enhance receptor mediated endocytosis of the agent into the cells. - View Dependent Claims (22)
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Specification