Using minivectors to treat ovarian cancer
AssigneesTwister Biotech, Inc., Baylor College of Medicine
InventorsE. Lynn Zechiedrich, Martin M. Matzuk, Laising Yen, Zhifeng Yu, Lirio Milenka Arevalo-Soliz, Daniel James Catanese, JR., Jonathan Marcus Fogg, Christopher Elbert Coker
Life of this patent
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Abstract
MiniVectors and compositions containing MiniVectors that target ovarian cancer genes selected from FOXM1, AKT, CENPA, PLK1, CDC20, BIRC5, AURKB, CCNB1, CDKN3, BCAM-AKT2, CDKN2D-WDFY2, SLC25A6, CIP2A, CD133, ALDH1A1, CD44, SALL4, and/or PRDM16, alone or in any combination, are provided, along with uses in the treatment of ovarian cancer.
Claims20
1) A MiniVector, said MiniVector being a double stranded, supercoiled, and circular DNA encoding an ovarian cancer inhibitory sequence (OCi) that can be expressed in a mammalian cell, said MiniVector lacking a bacterial origin of replication and lacking an antibiotic resistance gene.
11) A composition comprising a MiniVector in a pharmaceutically acceptable excipient, said MiniVector being a double-stranded, supercoiled, nicked, or relaxed circular DNA encoding an OCi and lacking a bacterial origin of replication and lacking an antibiotic resistance gene, wherein said circular DNA is at least 95% free of parent plasmid DNA or recombination side-products, wherein said OCi is expressible in human cells and thereby inhibits the expression of a human target gene selected from FOXM1, AKT, CENPA, PLK1, CDC20, BIRC5, AURKB, CCNB1, CDKN3, BCAM-AKT2, CDKN2D-WDFY2, SLC25A6, CIP2A, CD133, ALDH1A1, CD44, SALL4, and/or PRDM16, alone, or in any combination.
19) A MiniVector, said MiniVector being a double-stranded, supercoiled, circular DNA encoding an OCi that can be expressed in a mammalian cell, wherein said OCi encodes an inhibitory RNA for a target gene selected from FOXM1, AKT, CENPA, PLK1, CDC20, BIRC5, AURKB, CCNB1, CDKN3, BCAM-AKT2, CDKN2D-WDFY2, SLC25A6, CIP2A, CD133, ALDH1A1, CD44, SALL4, and/or PRDM16, alone or in any combination, wherein said MiniVector lacks a bacterial origin of replication and lacks an antibiotic resistance gene, and wherein said MiniVector is made by:
- a) engineering a parent plasmid DNA molecule comprising site-specific recombination sites on either side of said OCi;
- b) transforming said parent plasmid into a cell suitable for site-specific recombination to occur, under conditions such that topoisomerase IV decatenation activity is inhibited, thereby producing a plurality of catenated DNA circles, wherein at least one of the circles in each catenane is a supercoiled DNA MiniVector of less than about 5 kb in length;
- c) decatenating the catenated site-specific recombination products, thereby releasing the supercoiled DNA MiniVector from the catenanes;
- and
- d) isolating the supercoiled DNA MiniVector.
Dependencies are inferred from the claim text.