Abstract: In one embodiment, a therapeutic composition containing a pentavalent antimonial is provided. The pentavalent antimonial can be sodium stibogluconate, levamisole, ketoconazole, and pentamidine and biological equivalents of said compounds. Additionally, pentavalent antimonials that can be used in accordance with the present invention may be any such compounds which are anti-leishmaniasis agents. The therapeutic composition of this embodiment contains an effective amount of pentavalent antimonial that can be used in treating infectious diseases. The types of diseases that can be treated with the present invention include, but are not limited to, the following: diseases associated with PTPase activity, immune deficiency, cancer, infections (such as viral infections), hepatitis B, and hepatitis C. The types of cancers that the present embodiment can be used to treat include those such as lymphoma, multiple myeloma, leukemia, melanoma, prostate cancer, breast cancer, renal cancer, bladder cancer.

Abstract: A method of inhibiting protein tyrosine phosphatase in a subject includes administering to the subject a therapeutically effective amount of at least one benzo-1,4-quinone, phenyl isothiazolone, or analog thereof to the subject.

Abstract: The various embodiments of the present invention are directed to pentavalent antimonials, purified pentavalent antimonials, and pentavalent antimonials that are comprised of an antimonial portion and an organic moeity portion. Alternatively the present invention is directed to agents and methods of screening agents which mimic the activity of pentavalent antimonials, particularly sodium stibogluconate and glucatime. An appropriate organic moeity may be selected based upon a desired interaction (e.g. steric action) with active site of a cellular component (e.g. a PTPase). In a preferred embodiment of the present invention the active site includes a cysteine residue which may be impacted by the compositions of the present invention.

Abstract: In one embodiment, a therapeutic composition containing a pentavalent antimonial is provided. The pentavalent antimonial can be sodium stibogluconate, levamisole, ketoconazole, and pentamidine and biological equivalents of said compounds. Additionally, pentavalent antimonials that can be used in accordance with the present invention may be any such compounds which are anti-leishmaniasis agents. The therapeutic composition of this embodiment contains an effective amount of pentavalent antimonial that can be used in treating infectious diseases. The types of diseases that can be treated with the present invention include, but are not limited to, the following: diseases associated with PTPase activity, immune deficiency, cancer, infections (such as viral infections), hepatitis B, and hepatitis C. The types of cancers that the present embodiment can be used to treat include those such as lymphoma, multiple myeloma, leukemia, melanoma, prostate cancer, breast cancer, renal cancer, bladder cancer.

Abstract: The invention encompasses therapeutic compositions containing a pentavalent antimonial composition. The pentavalent antimonial can be sodium stibogluconate and pentamidine and biological equivalents of said compounds. The therapeutic composition of this embodiment contains an effective amount of pentavalent antimonial that can be used in treating infectious diseases. The types of diseases that can be treated with the present invention include, but are not limited to, the following: diseases associated with PTPase activity, immune deficiency, cancer, infections (such as viral infections), hepatitis B, and hepatitis C. The therapeutic composition enhances cytokine activity. The therapeutic composition may include a cytokine, such as interferon ?, interferon ?, interferon ?, or granulocyte/macrophage colony stimulating factor. The composition may also include a second agent for treating hepatitis.

Abstract: In one embodiment, a therapeutic composition containing a pentavalent antimonial is provided. The pentavalent antimonial can be sodium stibogluconate, levamisole, ketoconazole, and pentamidine and biological equivalents of said compounds. Additionally, pentavalent antimonials that can be used in accordance with the present invention may be any such compounds which are anti-leishmaniasis agents. The therapeutic composition of this embodiment contains an effective amount of pentavalent antimonial that can be used in treating infectious diseases. The types of diseases that can be treated with the present invention include, but are not limited to, the following: diseases associated with PTPase activity, immune deficiency, cancer, infections (such as viral infections), hepatitis B, and hepatitis C. The types of cancers that the present embodiment can be used to treat include those such as lymphoma, multiple myeloma, leukemia, melanoma, prostate cancer, breast cancer, renal cancer, bladder cancer.

Abstract: A method of inhibiting protein tyrosine phosphatase in a subject includes administering to the subject a therapeutically effective amount of at least one benzo-1,4-quinone, phenyl isothiazolone, or analog thereof to the subject.

Abstract: The invention encompasses therapeutic compositions containing a pentavalent antimonial composition. The pentavalent antimonial can be sodium stibogluconate and pentamidine and biological equivalents of said compounds. The therapeutic composition of this embodiment contains an effective amount of pentavalent antimonial that can be used in treating diseases. The types of diseases that can be treated with the present invention include, but are not limited to, the following: diseases associated with PTPase activity, immune deficiency, cancer, infections (such as viral infections), hepatitis B, and hepatitis C. The therapeutic composition enhances cytokine activity. The therapeutic composition may include a cytokine, such as interferon ?, interferon ?, interferon ?, or granulocyte/macrophage colony stimulating factor. The composition may also include a second agent for treating cancer.

Abstract: A method of inhibiting protein tyrosine phosphatase in a subject includes administering to the subject a therapeutically effective amount of at least one benzo-1,4-quinone, phenyl isothiazolone, or analog thereof to the subject.

Abstract: The invention relates to therapeutic compositions useful in treating prostate cancer. In one embodiment, a therapeutic composition containing a pentavalent antimonial is provided. The pentavalent antimonial is preferably sodium stibogluconate and biological equivalents thereof. The therapeutic composition comprises an effective amount of pentavalent antimonial that can be used in treating prostate cancer. In addition, the types of diseases that can be treated with the present invention include, but are not limited to, the following: diseases associated with PTPase activity, immune deficiency, cancer, infections (such as viral infections), hepatitis B, and hepatitis C. The types of cancers that the present embodiment can be used to treat include those such as lymphoma, multiple myeloma, leukemia, melanoma, prostate cancer, breasts cancer, renal cancer, bladder cancer. The therapeutic composition enhances cytokine activity.

Abstract: The present invention relates to protein tyrosine phosphatase (“PTPase”) inhibitors and their use with T cell activators in immunotherapy to treat cancer.

Abstract: Pentamidine, an anti-protozoa drug, is described herein as a potent PTPase inhibitor with anti-cancer activity. Pentamidine at its therapeutic doses inhibits recombinant PRL phosphatases and inactivates intracellular PRLs in NIH3T3 transfectants. Pentamidine treatment at a nontoxic dose markedly inhibits the growth of WM9 human melanoma tumors in nude mice coincident with tumor cell necrosis and is capable of inactivating an ectopically expressed PRL-2 in the cancer cells. The drug has growth inhibitory activity against different human cancer cell lines that express the PRLs, and therefore has broad anti-cancer activity based on inactivating the oncogenic phosphatases.

Abstract: The present invention relates to protein tyrosine phosphatase (“PTPase”) inhibitors, and the use of PTPase inhibitors and PTPase inhibitors in combination with cytokines to treat diseases. Leishmaniasis agents have surprisingly and unexpectedly been found to be potent PTPase inhibitors. Examples of leishmaniasis agents that are also PTPase inhibitors include, but are not limited to, pentavalent antimonial compounds, imidazole compounds, and diamidine compounds. Therapeutic compositions and methods are provided that make use of these compounds to treat diseases.

Abstract: In one embodiment, a therapeutic composition containing a pentavalent antimonial is provided. The pentavalent antimonial can be sodium stibogluconate, levamisole, ketoconazole, and pentamidine and biological equivalents of said compounds. Additionally, pentavalent antimonials that can be used in accordance with the present invention may be any such compounds which are anti-leishmaniasis agents. The therapeutic composition of this embodiment contains an effective amount of pentavalent antimonial that can be used in treating infectious diseases. The types of diseases that can be treated with the present invention include, but are not limited to, the following: diseases associated with PTPase activity, immune deficiency, cancer, infections (such as viral infections), hepatitis B, and hepatitis C. The types of cancers that the present embodiment can be used to treat include those such as lymphoma, multiple myeloma, leukemia, melanoma, prostate cancer, breast cancer, renal cancer, bladder cancer.