Abstract: The invention relates to modulating Cdc14B levels (cell division cycle 14 homolog B) and/or Cdh1 (Fzr1 protein, CDC20-like 1b, or fizzy-related protein) levels to sensitize cells to DNA damage by increasing the abundance of Plk1 (polo-like kinase 1) in a target cell. In certain embodiments, the invention relates to modulating Plk1 levels, and in particular to increasing Plk1 levels, to sensitize target cells such as cancer cells to cell death or apoptosis. In certain embodiments, the invention relates to inhibitors of Cdc14B and Cdh1 that sensitize tumor cells to chemotherapy or radiation induced cell death or apoptosis. In addition to applications relating to cancer therapies and diagnostics, the Plk1 modulators and assays will be employed for identifying novel drugs or drug candidates useful for various proliferative and/or differentiative disorders such as major opportunistic infections, immune disorders, cardiovascular diseases and inflammatory disorders.

Abstract: The invention relates to modulating BimEL levels (Bcl-2-Interacting Mediator of cell death, Extra Long isoform) to sensitize cancer cells to cell death or apoptosis. In certain embodiments, the invention relates to increasing BimEL levels. In certain embodiments, the invention relates to inhibitors of at least one of ?-TrCP1/2 or RSK1/2 proteins that sensitize tumor cells to chemotherapy-induced death or apoptosis. Additionally, the invention relates to cancer therapies, diagnostics, and methods for identifying novel drugs or drug candidates for increasing BimEL levels.

Abstract: The present invention relates to the discovery, identification and characterization of nucleotide sequences that encode novel substrate-targeting subunits of ubiquitin ligases. The invention encompasses nucleotides encoding novel substrate-targeting subunits of ubiquitin ligases: FBP1, FBP2, FBP3, FBP4, FBP5, FBP6, FBP7, FBP8, FBP9, FBP10, FBP11, FBP12, FBP13, FBP14, FBP15, FBP16, FBP17, FBP18, FBP19, FBP20, FBP21, FBP22, FBP23, FBP24, and FBP25, transgenic mice, knock-out mice, host-cell expression systems and proteins encoded by the nucleotides of the novel substrate-targeting subunits.

Abstract: The present invention relates to the discovery and characterization of activity of Fbp1, a substrate-targeting ubiquitin ligase subunit. The invention encompasses interactions between Fbp1 and its substrates, including Fbp5, ?-Catenin, and I?B?. The invention also encompasses interactions between the Fbp1 isoform ?-Trcp2 and its substrates, including Fbp5, b-Catenin, and I?B?. The present invention relates to screening assays that use Fbp1 and/or ?-Trcp2 to identify potential therapeutic agents such as small molecules, compounds or derivatives which modulate Fbp1 and/or ?-Trcp2 activity for the treatment of proliferative and differentiative disorders, including infertility, cancer, major opportunistic infections, immune disorders, certain cardiovascular diseases, and inflammatory disorders. The invention also encompasses methods to diagnose and treat Fbp1-related infertility disorders.

Abstract: The present invention relates to USP47 (ubiquitin specific protease 47) inhibitors and methods for inducing apoptosis or cell death in a target cell. In certain embodiments, the invention relates to methods and kits to screen for related agents that induce apoptosis. Additionally, the invention relates to assays for screening compounds capable of acting as USP47 inhibitors.

Abstract: The present invention relates to the discovery, identification and characterization of nucleotides that encode novel substrate-targeting subunits of ubiquitin ligases. The invention encompasses nucleotides encoding novel substrate-targeting subunits of ubiquitin ligases: FBP1, FBP2, FBP3, FBP4, FBP5, FBP6, FBP7, FBP8, FBP9, FBP10, FBP11, FBP12, FBP13, FBP14, FBP15, FBP16, FBP17, FBP18, FBP19, FBP20, FBP21, FBP22, FBP23, FBP24, and FBP25, transgenic mice, knock-out mice, host cell expression systems and proteins encoded by the nucleotides of the present invention.

Abstract: Cdc25A is herein identified as a substrate for ?-TrCP1- or ?-TrCP2-mediated ubiquitination and subsequent degradation via the ubiquitin-proteasome pathway. In particular, it has been found that interfering with ?-TrCP expression or function, or increasing ?-TrCP degradation, leads to accumulation of Cdc25A in a cell. Since degradation of Cdc25A is a key feature of the response to DNA damage, leading to a stall in the cell cycle during which the cell can repair the damage, Cdc25A accumulation can abolish this response, thereby sensitizing the cell to DNA damage. Described herein are assays for identifying ?-TrCP inhibitors, and method of using such inhibitors for modulating Cdc25A degradation, sensitization of tumor cells, and as adjuvants in cancer therapy based on DNA damaging agents.

Abstract: The present invention relates to the discovery and characterization of activity of Fbp1, a substrate-targeting ubiquitin ligase subunit. The invention encompasses interactions between Fbp1 and its substrates, including Fbp5, ?-Catenin, and I?B?. The invention also encompasses interactions between the Fbp1 isoform ?-Trcp2 and its substrates, including Fbp5, b-Catenin, and I?B?. The present invention relates to screening assays that use Fbp1 and/or ?-Trcp2 to identify potential therapeutic agents such as small molecules, compounds or derivatives which modulate Fbp1 and/or ?-Trcp2 activity for the treatment of proliferative and differentiative disorders, including infertility, cancer, major opportunistic infections, immune disorders, certain cardiovascular diseases, and inflammatory disorders. The invention also encompasses methods to diagnose and treat Fbp1-related infertility disorders.

Abstract: Cdc25A is herein identified as a substrate for ?-TrCP1- or ?-TrCP2-mediated ubiquitination and subsequent degradation via the ubiquitin-proteasome pathway. In particular, it has been found that interfering with ?-TrCP expression or function, or increasing ?-TrCP degradation, leads to accumulation of Cdc25A in a cell. Since degradation of Cdc25A is a key feature of the response to DNA damage, leading to a stall in the cell cycle during which the cell can repair the damage, Cdc25A accumulation can abolish this response, thereby sensitizing the cell to DNA damage. Described herein are assays for identifying ?-TrCP inhibitors, and method of using such inhibitors for modulating Cdc25A degradation, sensitization of tumor cells, and as adjuvants in cancer therapy based on DNA damaging agents.

Abstract: Cdc25A is herein identified as a substrate for ?-TrCP1- or ?-TrCP2-mediated ubiquitination and subsequent degradation via the ubiquitin-proteasome pathway. In particular, it has been found that interfering with ?-TrCP expression or function, or increasing ?-TrCP degradation, leads to accumulation of Cdc25A in a cell. Since degradation of Cdc25A is a key feature of the response to DNA damage, leading to a stall in the cell cycle during which the cell can repair the damage, Cdc25A accumulation can abolish this response, thereby sensitizing the cell to DNA damage. Described herein are assays for identifying ?-TrCP inhibitors, and method of using such inhibitors for modulating Cdc25A degradation, sensitization of tumor cells, and as adjuvants in cancer therapy based on DNA damaging agents.

Abstract: The present invention generally relates to compounds and compositions useful for the modulation of ligase activity. The invention further relates to Compounds of the Invention, compositions thereof, and methods for treating or preventing cancer, a neoplastic disorder, acute or chronic renal failure, an inflammatory disorder, an immune disorder, a cardiovascular disease, an effect of aging or an infectious disease comprising administering an effective amount of a Compound of the Invention. The invention further relates to the use of a Compound of the Invention as a preservative of a cell, blood, tissue or an organ or as an agent to modulate stem cells.

Abstract: The present invention generally relates to compounds and compositions useful for the modulation of ligase activity. The invention further relates to Compounds of the Invention, compositions thereof, and methods for treating or preventing cancer, a neoplastic disorder, acute or chronic renal failure, an inflammatory disorder, an immune disorder, a cardiovascular disease, an effect of aging or an infectious disease comprising administering an effective amount of a Compound of the Invention. The invention further relates to the use of a Compound of the Invention as a preservative of a cell, blood, tissue or an organ or as an agent to modulate stem cells.

Abstract: The present invention relates to the discovery, identification and characterization of nucleotide sequences that encode novel substrate-targeting subunits of ubiquitin ligases. The invention encompasses nucleotides encoding novel substrate-targeting subunits of ubiquitin ligases: FBP1, FBP2, FBP3, FBP4, FBP5, FBP6, FBP7, FBP8, FBP9, FBP10, FBP11, FBP12, FBP13, FBP14, FBP15, FBP16, FBP17, FBP18, FBP19, FBP20, FBP21, FBP22, FBP23, FBP24, and FBP25, transgenic mice, knock-out mice, host-cell expression systems and proteins encoded by the nucleotides of the novel substrate-targeting subunits.

Abstract: The present invention relates to the discovery, identification and characterization of nucleotides that encode novel substrate-targeting subunits of ubiquitin ligases. The invention encompasses nucleotides encoding novel substrate-targeting subunits of ubiquitin ligases: FBP1, FBP2, FBP3, FBP4, FBP5, FBP6, FBP7, FBP8, FBP9, FBP10, FBP11, FBP12, FBP13, FBP14, FBP15, FBP16, FBP17, FBP18, FBP19, FBP20, FBP21, FBP22, FBP23, FBP24, and FBP25, transgenic mice, knock-out mice, host cell expression systems and proteins encoded by the nucleotides of the present invention.

Abstract: The present invention relates to the discovery, identification and characterization of nucleotides that encode novel substrate-targeting subunits of ubiquitin ligases. The invention encompasses nucleotides encoding novel substrate-targeting subunits of ubiquitin ligases: FBP1, FBP2, FBP3, FBP4, FBP5, FBP6, FBP7, FBP8, FBP9, FBP10, FBP11, FBP12, FBP13, FBP14, FBP15, FBP16, FBP17, FBP18, FBP19, FBP20, FBP21, FBP22, FBP23, FBP24, and FBP25, transgenic mice, knock-out mice, host cell expression systems and proteins encoded by the nucleotides of the present invention.

Abstract: The present invention relates to the discovery, identification and characterization of nucleotides that encode novel substrate-targeting subunits of ubiquitin ligases. The invention encompasses nucleotides encoding novel substrate-targeting subunits of ubiquitin ligases: FBP1, FBP2, FBP3, FBP4, FBP5, FBP6, FBP7, FBP8, FBP9, FBP10, FBP11, FBP12, FBP13, FBP14, FBP15, FBP16, FBP17, FBP18, FBP19, FBP20, FBP21, FBP22, FBP23, FBP24, and FBP25, transgenic mice, knock-out mice, host cell expression systems and proteins encoded by the nucleotides of the present invention.

Abstract: The present invention relates to the discovery, identification and characterization of nucleotides that encode novel substrate-targeting subunits of ubiquitin ligases. The invention encompasses nucleotides encoding novel substrate-targeting subunits of ubiquitin ligases: FBP1, FBP2, FBP3, FBP4, FBP5, FBP6, FBP7, FBP8, FBP9, FBP10, FBP11, FBP12, FBP13, FBP14, FBP15, FBP16, FBP17, FBP18, FBP19, FBP20, FBP21, FBP22, FBP23, FBP24, and FBP25, transgenic mice, knock-out mice, host cell expression systems and proteins encoded by the nucleotides of the present invention.

Abstract: The present invention relates to the discovery, identification and characterization of nucleotides that encode novel substrate-targeting subunits of ubiquitin ligases. The invention encompasses nucleotides encoding novel substrate-targeting subunits of ubiquitin ligases: FBP1, FBP2, FBP3, FBP4, FBP5, FBP6, FBP7, FBP8, FBP9, FBP10, FBP11, FBP12, FBP13, FBP14, FBP15, FBP16, FBP17, FBP18, FBP19, FBP20, FBP21, FBP22, FBP23, FBP24, and FBP25, transgenic mice, knock-out mice, host cell expression systems and proteins encoded by the nucleotides of the present invention.

Abstract: The present invention relates to the discovery and characterization of activity of Fbp1, a substrate-targeting ubiquitin ligase subunit. The invention encompasses interactions between Fbp1 and its substrates, including Fbp5, ?-Catenin, and I?B?. The invention also encompasses interactions between the Fbp1 isoform ?-Trcp2 and its substrates, including Fbp5, b-Catenin, and I?B?. The present invention relates to screening assays that use Fbp1 and/or ?-Trcp2 to identify potential therapeutic agents such as small molecules, compounds or derivatives which modulate Fbp1 and/or ?-Trcp2 activity for the treatment of proliferative and differentiative disorders, including infertility, cancer, major opportunistic infections, immune disorders, certain cardiovascular diseases, and inflammatory disorders. The invention also encompasses methods to diagnose and treat Fbp1-related infertility disorders.

Abstract: The present invention relates to the discovery, identification and characterization of nucleotides that encode novel substrate-targeting subunits of ubiquitin ligases. The invention encompasses nucleotides encoding novel substrate-targeting subunits of ubiquitin ligases: FBP1, FBP2, FBP3, FBP4, FBP5, FBP6, FBP7, FBP8, FBP9, FBP10, FBP11, FBP12, FBP13, FBP14, FBP15, FBP16, FBP17, FBP18, FBP19, FBP20, FBP21, FBP22, FBP23, FBP24, and FBP25, transgenic mice, knock-out mice, host cell expression systems and proteins encoded by the nucleotides of the present invention.