Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Liposomes
Reexamination Certificate
2005-05-10
2005-05-10
Ketter, James (Department: 1636)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Liposomes
C435S458000, C435S320100, C536S023100
Reexamination Certificate
active
06890556
ABSTRACT:
A system and method for controlled gene delivery comprising condensed nucleic acids complexed with polylinkers, wherein the complexes are covalently and/or non-covalently bound to the surface of a substrate capable of supporting cell adhesion. The gene delivery system achieves temporal and spatial control of nucleic acid delivery to a target cell or cells through control of complex density on the surface of the support substrate, and reversibility of the attachment of the polylinker to the support substrate. The system and method of the invention can be used to create spatial patterns of gene expression, and in tissue engineering, high throughput screening, and gene therapy applications.
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Segura Tatiana
Shea Lonnie D.
Ketter James
Klauber & Jackson
Northwestern University
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