Abstract: Provided is a method of inhibiting protein kinase C zeta/protein kinase M zeta, including contacting a sample containing an isoform of protein kinase C zeta with a compound of formula: referred to as 1-naphthol-3,6,8-trisulphonic acid, or a pharmaceutically acceptable salt thereof. In some embodiments, contacting the sample with the compound does not inhibit protein kinase C iota/lambda. In a specific example, the sample includes neural tissue, the isoform of protein kinase C zeta is protein kinase M zeta, and inhibiting includes reducing kinase activity and further includes diminishing long-term potentiation. In some embodiment, the method includes inhibiting glucose transport. Also provided is a method of affecting memory, including administering the compounds to a mammalian organism.

Abstract: The subject invention pertains to methods of treating colorectal cancer by administering an atypical PKC inhibitor. The inhibitors of aPKC useful in the methods of the instant invention include ACPD, ICA-1, DNDA and ?-Stat. Also provided are methods of measuring the susceptibility of colon cancer cells of a subject to inhibitors of aPKCs.

Abstract: The subject invention pertains to methods of treating colorectal cancer by administering an atypical PKC inhibitor. The inhibitors of aPKC useful in the methods of the instant invention include ACPD, ICA-1, DNDA and ?-Stat. Also provided are methods of measuring the susceptibility of colon cancer cells of a subject to inhibitors of aPKCs.

Abstract: Provided is a method of inhibiting protein kinase C zeta/protein kinase M zeta, including contacting a sample containing an isoform of protein kinase C zeta with a compound of formula: referred to as 1-naphthol-3,6,8-trisulphonic acid, or a pharmaceutically acceptable salt thereof. In some embodiments, contacting the sample with the compound does not inhibit protein kinase C iota/lambda. In a specific example, the sample includes neural tissue, the isoform of protein kinase C zeta is protein kinase M zeta, and inhibiting includes reducing kinase activity and further includes diminishing long-term potentiation. In some embodiment, the method includes inhibiting glucose transport. Also provided is a method of affecting memory, including administering the compounds to a mammalian organism.

Abstract: A method of inhibiting the growth or proliferation of ovarian cancer cells is provided. The method comprises contacting the ovarian cancer cells with an effective amount of 8-hydroxynaphthalene-1,3,6-trisulfonic acid (?-Stat), a salt of ?-Stat, a derivative of ?-Stat, or a salt of a derivative of ?-Stat. Also provided is a method of treating an ovarian cancer or inhibiting ovarian cancer cell growth or proliferation in a subject by administering to the subject a therapeutically effective amount of ?-Stat, a salt of ?-Stat, a derivative of ?-Stat, or a salt of a derivative of ?-Stat.

Abstract: The subject invention pertains to methods of treating colorectal cancer by administering an atypical PKC inhibitor. The inhibitors of aPKC useful in the methods of the instant invention include ACPD, ICA-1, DNDA and ?-Stat. Also provided are methods of measuring the susceptibility of colon cancer cells of a subject to inhibitors of aPKCs.

Abstract: The invention relates to compositions comprising a PKC inhibitor and their use in a method of treating or preventing the development of prostate cancer.

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: PKCiota inhibitor 1H-imidazole-4-carboxamide, 5-amino-1-[2,3-dihydroxy-4-[(phosphonooxy)methyl]cyclopentyl]-,[1R-(1?,2?,3?,4?)], (ICA-1), targets a unique sequence (amino acid residues 469-475) in the catalytic domain of PKCiota and inhibits PKCiota activity. The data shows suprising and unexpected ability of ICA-1 to selectively inhibit the proliferation of cells that overexpress PKCiota.

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 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 detecting brain tumorigenesis in a subject, the method including the steps of (a) obtaining a sample from the brain of the human subject, (b) detecting quantitatively or semi-quantitatively in the sample a level of expression for PKC-iota and (c) comparing the expression level in (b) to a level of expression in a normal control, wherein overexpression of PKC-iota, with respect to the control, indicates the presence of a glioma or meningioma in the subject. The present invention is based upon the discovery that PKC-iota levels are elevated during brain tumorigenesis. Furthermore, the proliferation rate of the tumor correlates with the level of PKC-iota. The invention also provides methods of treating gliomas and meningiomas by administering to the subject a compound that inhibits the expression of PKC-iota. 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: PKCiota inhibitor 1H-imidazole-4-carboxamide, 5-amino-1-[2,3-dihydroxy-4-[(phosphonooxy)methyl]cyclopentyl]-,[1R-(1?,2?,3?,4?)], (ICA-1), targets a unique sequence (amino acid residues 469-475) in the catalytic domain of PKCiota and inhibits PKCiota activity. The data shows suprising and unexpected ability of ICA-1 to selectively inhibit the proliferation of cells that overexpress PKCiota.

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

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