Methods for diagnosis and treatment of Bloom's syndrome

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving nucleic acid

Reexamination Certificate

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C435S007100

Reexamination Certificate

active

06838240

ABSTRACT:
The present invention provides a method for diagnosing Bloom's syndrome (BS) as well as determining whether a subject is a carrier of a mutated BLM gene. The present invention also provides one or more single-stranded nucleic acid probes and antibodies which may be formulated in kits, and used for diagnosing BS or determining whether a human subject is a carrier of a mutated BLM gene. In addition, the present invention provides a method for treating or preventing the onset of BS in a subject in need of such treatment or prevention, as well as vectors and stem cells useful for such treatment or prevention. The present invention also provides a purified and isolated nucleic acid encoding an enzymatically active BLM protein, a vector comprising this nucleic acid, a cell stably transformed with this vector, as well as a method for producing recombinant, enzymatically active BLM protein. A purified, enzymatically active BLM protein is also provided by the present invention. Finally, the present invention provides a vector, an embryonic stem cell, and a non-human, transgenic animal, each of which comprises a mutated BLM gene, as well as a method for producing the non-human, transgenic animal.

REFERENCES:
patent: 5824501 (1998-10-01), Ellis et al.
patent: 6221643 (2001-04-01), Ellis et al.
patent: 6399378 (2002-06-01), Ward et al.
patent: WO 9717979 (1997-05-01), None
GenBank Accession No. AAA87850. Bloom's syndrome protein. (Nov. 25, 1995).*
GenBank Accession No. U39817. Human Bloom's syndrome protein (BLM) mRNA, complete cds. (Nov. 25, 1995).*
Ellis et al. The Bloom's syndrome gene product is homologous to RecQ helicases. Cell (Nov. 17, 1995) 83(4): 655-666.*
Puranam et al., entitled “Cloning and characterization of RECQL, a potential human homologue of theEscherichia coliDNA helicase RecQ,” J. Biol. Chem. (1994) 269(47): 29838-45, Nov. 1994.
Gangloff et al., entitled The yeast type I topoisomerase Top3 interacts with Sgs1, a DNA helicase homolog: a potential eukaryotic reverse gyrase, Mol. Cell Biol. (Dec. 1994) 14(12):8391-8.
Umezu et al., entitled “Escherichia coliRecQ protein is a DNA helicase,” PNAS (Jul. 1990) 87(14):5363-7.
James German, M.D., entitled “Bloom Syndrome: A Mendelian Prototype of Somatic Mutational Disease,” Medicine, vol. 72, No. 6, pp. 393-406 Nov. (1993).
Nathan A. Ellis et al., “The Bloom's Syndrome Gene Product Is Homologous to RecQ Helicases,” Cell, vol. 83, pp. 655-666, Nov. 17, 1995.
Eberhard Passarge, entitled “A DNA helicase in full Bloom,” Nature Genetics, vol. 11, pp. 356-357 Dec. (1995).

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