Abstract: Certain embodiments are directed to methods for treating Ewing family tumors (EFT) comprising administering an effective amount of altertoxin II to a subject having EFT.

Abstract: Certain embodiments are directed to methods for treating Ewing family tumors (EFT) comprising administering an effective amount of altertoxin II to a subject having EFT.

Abstract: This present disclosure relates to the fields of medicine and pharmaceuticals. In particular, the invention relates to the identification of epoxytaccalonolide microtubule stabilizers for use in inhibiting cell proliferation and disrupting normal cellular microtubule processes leading to cell death. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Abstract: The invention provides epoxytaccalonolide microtubule stabilizers and their use as anti-proliferative microtubule stabilizing agents.

Abstract: The present invention provides polysubstituted pyrrole compounds, pharmaceutically effective salts, prodrugs, solvates and hydrates thereof, having antimitotic, antiproliferative and cytotoxic activity, activity against cells expressing the drug efflux protein, P-glycoprotein, or cells expressing the ?-III isotype of tubulin and antitumor activity. Also provided are methods of utilizing these compounds for inhibiting the proliferation of cancer cells as well as their medical use, in particular for treating cancer, including drug resistant cancer.

Abstract: The invention provides epoxytaccalonolide microtubule stabilizers and their use as anti-proliferative microtubule stabilizing agents.

Abstract: The present invention provides polysubstituted pyrrole compounds, pharmaceutically effective salts, prodrugs, solvates and hydrates thereof, having antimitotic, antiproliferative and cytotoxic activity, activity against cells expressing the drug efflux protein, P-glycoprotein, or cells expressing the ?-III isotype of tubulin and antitumor activity. Also provided are methods of utilizing these compounds for inhibiting the proliferation of cancer cells as well as their medical use, in particular for treating cancer, including drug resistant cancer.

Abstract: The invention provides epoxytaccalonolide microtubule stabilizers and their use as anti-proliferative microtubule stabilizing agents.

Abstract: The invention provides epoxytaccalonolide microtubule stabilizers and their use as anti-proliferative microtubule stabilizing agents.

Abstract: The invention provides epoxytaccalonolide microtubule stabilizers and their use as anti-proliferative microtubule stabilizing agents.

Abstract: A method of inhibiting the proliferation of a hyperproliferative mammalian cell having a multiple drug resistant phenotype utilizing an amount of a laulimalide compound effective to disrupt the dynamic state of microtubule polymerization and depolymerization to arrest cell mitosis is disclosed, together with laulimalide compounds which find use in such method.

Abstract: In accordance with the present invention, there have been identified extracts from a tropical plant that initiate paclitaxel-like microtubule bundling. Bioassay-directed purification yields the steroid taccalonolide A. Taccalonolide, like paclitaxel, initiates the formation of abnormal interphaes and mitotic microtubules. Cells treated with taccalonolide exhibit thick bundles of microtubules that appear to nucleate independent of the microtubule organizing center. Abnormal mitotic spindles consisting of multi-polar spindles are initiated by taccalonolide and resemble abnormal mitotic spindles found in the presence of paclitaxel. Like paclitaxel, taccalonolide causes the breakdown of the nucleus into micronuclei. Taccalonolide causes G2/M arrest, Bc1-2 phosphorylation and initiates an apoptotic cascade that includes the activation of caspase 3. Taccalonolide is an effective inhibitor of proliferation against both SK-OV-3 and MDA-MB-435 cell with IC50 values of 2.3 ?M and 2.1 ?M respectively.

Abstract: The application discloses novel 2-alkoxyestradiol analogs which exhibit anti-proliferative properties, and methods of making and using such compounds to inhibit undesired cell proliferation and tumor growth. Additionally, methods are disclosed of treating diseases associated with undesired angiogenesis and undesired proliferation, and methods of treating infectious disease wherein the infectious agent is particularly susceptible to inhibition by agents that disrupt microtubule organization and function.

Abstract: The application discloses novel 2-alkoxyestradiol analogs which exhibit anti-proliferative properties, and methods of making and using such compounds to inhibit undesired cell proliferation and tumor growth. Additionally, methods are disclosed of treating diseases associated with undesired angiogenesis and undesired proliferation, and methods of treating infectious disease wherein the infectious agent is particularly susceptible to inhibition by agents that disrupt microtubule organization and function.

Abstract: The application discloses novel 2-alkoxyestradiol analogs which exhibit anti-proliferative properties, and methods of making and using such compounds to inhibit undesired cell proliferation and tumor growth. Additionally, methods are disclosed of treating diseases associated with undesired angiogenesis and undesired proliferation, and methods of treating infectious disease wherein the infectious agent is particularly susceptible to inhibition by agents that disrupt microtubule organization and function.

Abstract: The application discloses novel 2-alkoxyestradiol analogs which exhibit anti-proliferative properties, and methods of making and using such compounds to inhibit undesired cell proliferation and tumor growth. Additionally, methods are disclosed of treating diseases associated with undesired angiogenesis and undesired proliferation, and methods of treating infectious disease wherein the infectious agent is particularly susceptible to inhibition by agents that disrupt microtubule organization and function.

Abstract: A method of inhibiting the proliferation of a hyperproliferative mammalian cell having a multiple drug resistant phenotype utilizing an amount of a laulimalide compound effective to disrupt the dynamic state of microtubule polymerization and depolymerization to arrest cell mitosis is disclosed, together with laulimalide compounds which find use in such method.

Abstract: A method of inhibiting the proliferation of a hyperproliferative mammalian cell having a multiple drug resistant phenotype utilizing an amount of a laulimalide compound effective to disrupt the dynamic state of microtubule polymerization and depolymerization to arrest cell mitosis is disclosed, together with laulimalide compounds which find use in such method.

Abstract: A cryptophycin compound is provided having the structure: ##STR1## Further provided are methods for producing novel cryptophycins from the Nostoc sp. of blue-green algae (cyanobacteria). Pharmaceutical compositions comprising novel cryptophycins are also provided, as are methods for using cryptophycins to inhibit the proliferation of hyperproliferative cells. Further provided are methods for using cryptophycins to inhibit the proliferation of hyperproliferative cells with drug resistant phenotypes, and to treat pathological conditions, such as neoplasia.

Abstract: A cryptophycin compound is provided having the structure: ##STR1## Further provided are methods for producing novel cryptophycins from the Nostoc sp. of blue-green algae (cyanobacteria). Pharmaceutical compositions comprising novel cryptophycins are also provided, as are methods for using cryptophycins to inhibit the proliferation of hyperproliferative cells. Further provided are methods for using cryptophycins to inhibit the proliferation of hyperproliferative cells with drug resistant phenotypes, and to treat pathological conditions, such as neoplasia.