Selective killing of cells by activation of double-stranded rna dependent protein kniase-pkr
OwnerAlexei Shir, Alexander Levitzkiinventors
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OwnerAlexei Shir, Alexander Levitzkiinventors
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Novel methods and compositions for selective killing of cells by activation of PKR are disclosed. In a preferred embodiment, a method is provided for causing cell death in a targeted population of cells that includes the steps of: selecting a nucleotide sequence at a single genetic locus in the targeted population that is absent from the equivalent locus in a population of non-targeted cells; obtaining one or more anti-sense RNA having sequence homology with the locus in the targeted population; permitting the anti-sense RNA to hybridize with an RNA transcribed from the locus in the targeted population so as to form a contiguous double stranded RNA for interacting with PKR. The activation of PKR gives rise to selective cell death in the targeted population.
A method for selectively activating double stranded RNA dependent protein kinase in a targeted population of cells, comprising:
A method according to (2) wherein the DNA sequence is contained within any of a plasmid, a virus or a liposome or is delivered to the cell as naked DNA or is transcribed from an RNA sequence contained within a retrovirus
A method according to (2). wherein the DNA sequence is contained within a virus selected from the group consisting of an adenovirus, vaccinia virus and a herpes virus.
A method according to (3), wherein the DNA sequence is naked DNA, the naked being attached to a carrier.
A method according to (1). wherein obtaining an antisense RNA in step (b) further comprises:
A method according to (6), wherein the RNA sequence is contained within a virus.
A method according to (7),wherein the virus is a lentivirus.
A method according to (6), wherein the RNA sequence includes a U6 small nuclear RNA promoter.
A method according to (1),wherein the target population of cells is selected from the group consisting of:
A method according to (1),wherein the targeted population of cells are neoplastic cells.
A method according to (11),wherein the neoplastic cells are glioblastoma cells.
A method according to (11), wherein the neoplastic cells are lymphomas
A method according to (1), wherein the neoplastic cells are located in vivo in a subject
A method according to 1, wherein the neoplastic cells are located ex vivo in a culture vessel,
A method according to 1, wherein step (c) further comprises administering to the population of cells, an effective amount of interferon.
A method according to 1, wherein the anti-sense RNA has a sequence selected from SEQ 1-4 .
A method according to 1, wherein the double stranded RNA is at least 30 nucleotides in length.
A method according to 17, wherein the double stranded RNA is lee than 100 nucleotides in length.
A method for treating a subject having a disorder characterized by proliferating cells, comprising:
A method according to 20, wherein the genetic locus is characterized by a mutation.
A method according to 20, where the proliferative disorder is neoplastic disease.
A method according to 20, wherein the proliferative disorder is psoriasis.
A method according to 20, wherein the proliferative disorder results from abnormal autoimmune T-lymphocytes.
A method according to 20, wherein the proliferative disorder includes vasculogenesis or angiogenesis
A pharmaceutical composition for treating proliferative disorders, comprising:
A composition according to 26, wherein the anti-sense RNA has a sequence selected from the group consisting of SEQ ID Nos 1,3, 7, 9, 11, and 13 .
A composition according to 26, wherein the pharmaceutical composition. further comprises an interferon.
An anti-sense RNA, comprising:
An anti-sense mRNA according to 29, comprising:
A nucleic acid comprising:
A vector comprising:
A vector according to 32, consisting of a retroviral vector
A vector according to 33 wherein the retroviral vector is a lentivirus
A cell population having transfected therein a vector according to 32
A cell population according to 35, wherein the transfection is a stable and the cell population is maintained in a cell culture medium,
Dependencies are inferred from the claim text.