Abstract: The invention pertains to a method of treating melanoma by administering to a subject in need thereof, a composition comprising a therapeutically effective amount of an inhibitor of PKC-? and/or PKC-?. Non-limiting examples of an inhibitor of PKC-? and/or PKC-? include ICA-1 and ACPD. The invention also provides PKC-? and/or PKC-? as biomarkers for identifying a melanoma in a subject as likely to be responsive or non-responsive to a therapy using an inhibitor of PKC-? and/or PKC-?. Accordingly, a method of identifying a subject having a melanoma as being responsive or non-responsive to a melanoma therapy with an inhibitor of PKC-? and/or PKC-? based on the levels and/or activity of PKC-? and/or PKC-? mRNA or protein in the melanoma cells from the subject are also provided.

Abstract: The invention pertains to a method of treating melanoma by administering to a subject in need thereof, a composition comprising a therapeutically effective amount of an inhibitor of PKC-? and/or PKC-?. Non-limiting examples of an inhibitor of PKC-? and/or PKC-? include ICA-1 and ACPD. The invention also provides PKC-? and/or PKC-? as biomarkers for identifying a melanoma in a subject as likely to be responsive or non-responsive to a therapy using an inhibitor of PKC-? and/or PKC-?. Accordingly, a method of identifying a subject having a melanoma as being responsive or non-responsive to a melanoma therapy with an inhibitor of PKC-? and/or PKC-? based on the levels and/or activity of PKC-? and/or PKC-? mRNA or protein in the melanoma cells from the subject are also provided.

Abstract: The invention pertains to a method of treating melanoma by administering to a subject in need thereof, a composition comprising a therapeutically effective amount of an inhibitor of PKC-? and/or PKC-?. Non-limiting examples of an inhibitor of PKC-? and/or PKC-? include ICA-1 and ACPD. The invention also provides PKC-? and/or PKC-? as biomarkers for identifying a melanoma in a subject as likely to be responsive or non-responsive to a therapy using an inhibitor of PKC-? and/or PKC-?. Accordingly, a method of identifying a subject having a melanoma as being responsive or non-responsive to a melanoma therapy with an inhibitor of PKC-? and/or PKC-? based on the levels and/or activity of PKC-? and/or PKC-? mRNA or protein in the melanoma cells from the subject are also provided.

Abstract: The invention pertains to a method of treating melanoma by administering to a subject in need thereof, a composition comprising a therapeutically effective amount of an inhibitor of PKC-? and/or PKC-?. Non-limiting examples of an inhibitor of PKC-? and/or PKC-? include ICA-1 and ACPD. The invention also provides PKC-? and/or PKC-? as biomarkers for identifying a melanoma in a subject as likely to be responsive or non-responsive to a therapy using an inhibitor of PKC-? and/or PKC-?. Accordingly, a method of identifying a subject having a melanoma as being responsive or non-responsive to a melanoma therapy with an inhibitor of PKC-? and/or PKC-? based on the levels and/or activity of PKC-? and/or and/or PKC-? mRNA or protein in the melanoma cells from the subject are also provided.

Abstract: The subject invention pertains to uses of PKC-iota inhibitors for treatment of breast cancer. In one embodiment, the subject invention provides novel uses of 1H-imidazole-4-carboxamide, 5-amino-1-[2,3-dihydroxy-4-[(phosphonooxy)methyl]cyclopentyl]-,[1R-(1?, 2?, 3?, 4?)] (ICA-1) and related compounds for treatment of breast cancer. The compounds of the subject invention have potent anti-proliferative effects against human breast cancer cells. The compounds of the subject invention also inhibit the phosphorylation of IKK-?/IKK-?, induce chromatin condensation, and/or induce DNA fragmentation in cancer cells.

Abstract: The subject invention pertains to uses of PKC-iota inhibitors for treatment of breast cancer. In one embodiment, the subject invention provides novel uses of 1H-imidazole-4-carboxamide, 5-amino-1-[2,3 -dihydroxy-4-[(phosphonooxy) methyl]cyclopentyl]-,[1R-(1?, 2?, 3?, 4?)] (ICA-1) and related compounds for treatment of breast cancer. The compounds of the subject invention have potent anti-proliferative effects against human breast cancer cells. The compounds of the subject invention also inhibit the phosphorylation of IKK-?/IKK-?, induce chromatin condensation, and/or induce DNA fragmentation in cancer cells.

Abstract: A method of treating ovarian cancer by administering a PKC inhibitor is presented herein. It was found that administering a PKC inhibitor, such as ACPD or ICA-1, to ovarian cancer cells inhibited cancer cell proliferation.

Abstract: The present invention provides use of protein kinase C-zeta (PKC-?) as a diagnostic biomarker for breast cancer tumorigenesis. Also provided are uses of PKC-zeta inhibitors for inhibiting breast cancer tumorigenesis and for treatment of breast cancer.

Abstract: A method of treating ovarian cancer by administering a PKC inhibitor is presented herein. It was found that administering a PKC inhibitor, such as ACPD or ICA-1, to ovarian cancer cells inhibited cancer cell proliferation.

Abstract: A method of detecting prostate tumorigenesis in a subject, the method including the steps of (a) obtaining a sample from the prostate of the human subject, (b) detecting quantitatively or semi-quantitatively in the sample a level of expression for PKC-? and (c) comparing the expression level in (b) to a level of expression in a normal control, wherein overexpression of PKC-?, with respect to the control, indicates the presence of prostate cancer in the subject. The present invention is based upon the discovery that PKC-? levels are elevated during prostate tumorigenesis. Furthermore, the proliferation rate of the tumor correlates with the level of PKC-?. The invention also provides methods of treating prostate cancer by administering to the subject a compound that inhibits the expression of PKC-?. The compound can be a small interfering RNA (siRNA) molecule.

Abstract: A method of detecting prostate tumorigenesis in a subject, the method including the steps of (a) obtaining a sample from the prostate of the human subject, (b) detecting quantitatively or semi-quantitatively in the sample a level of expression for PKC-? and (c) comparing the expression level in (b) to a level of expression in a normal control, wherein overexpression of PKC-?, with respect to the control, indicates the presence of prostate cancer in the subject. The present invention is based upon the discovery that PKC-? levels are elevated during prostate tumorigenesis. Furthermore, the proliferation rate of the tumor correlates with the level of PKC-?. The invention also provides methods of treating prostate cancer by administering to the subject a compound that inhibits the expression of PKC-?. The compound can be a small interfering RNA (siRNA) molecule.

Abstract: The subject invention pertains to uses of PKC-iota inhibitors for treatment of breast cancer. In one embodiment, the subject invention provides novel uses of 1H-imidazole-4-carboxamide, 5-amino-1-[2,3 -dihydroxy-4-[(phosphonooxy) methyl]cyclopentyl]-,[1R-(1?, 2?, 3?, 4?)] (ICA-1) and related compounds for treatment of breast cancer. The compounds of the subject invention have potent anti-proliferative effects against human breast cancer cells. The compounds of the subject invention also inhibit the phosphorylation of IKK-?/IKK-?, induce chromatin condensation, and/or induce DNA fragmentation in cancer cells.