37 results about "Selective cytotoxicity" patented technology

The invention provides bispecific antibodies with selective cytotoxicity against malignant B-cells. The bispecific antibodies bind to an effector cell antigen and to a 28 / 32 kDa heterodimeric protein on the surface of malignant B-cells. The invention also includes the monospecific components of the bispecific antibodies, humanized versions thereof, and humanized bispecific antibodies. The invention further provides therapeutic and diagnostic methods employing these antibodies.

The present invention relates to a pharmaceutical composition comprising mono- meric alpha-lactalbumin complex, preferably LAC, which is an active complex of alpha-lactalbumin and a fatty acid or lipid with selective cytotoxic activity. The composition of the invention comprises insignificant amounts of oligomeric / multi- meric alpha-lactalbumin complex, preferably LAC. Based on the selective cyto- toxicity of the alpha-lactalbumin complex, preferably LAC composition such compositions are suitable for use in the manufacture of medicaments for use in therapy. Medicaments, comprising monomeric LAC are for use in the treatment of bacterial and viral infections and in particular cancer due to the selective cytotoxic activity. The application further relates to methods of producing a composition comprising monomeric alpha-lactalbumin complex, preferably LAC with cytotoxic activity.

The present invention relates to a compound inhibiting HF-1 activity, a preparation method of the same, and a pharmaceutical composition comprising the same as an active ingredient. The compound of the present invention demonstrates anticancer activity not by non-selective cytotoxicity but by inhibiting the activity of HIF-1, the transcription factor playing an important role in cancer cell growth and metastasis. Accordingly, the compound or the pharmaceutically acceptable salt thereof according to the present invention inhibits HIF-1 activity, and therefore can be used as a therapeutic agent for solid tumors such as colon cancer, liver cancer, stomach cancer and breast cancer. In addition, the compound or the pharmaceutically acceptable salt thereof according to the present invention can be used as an active ingredient for a therapeutic agent for diabetic retinopathy or arthritis which may become worse when hypoxia-induced VEGF expression by HIF-1 increases.

The presently claimed subject matter provides conditionally replication competent adenoviral vectors that confer selective cytotoxicity on cells expressing HIF-1 by infecting cells that allow HIF-1 inducible promoters present within the vectors to function. Also provided are compositions and host cells based upon the vectors, as well as methods of propagating and using the vectors. The presently claimed subject matter further provides a method of inhibiting tumor growth by co-infecting cells in a tumor with a conditionally replication competent adenovirus vector in conjunction with a replication deficient adenovirus vector.

Compounds of Formula (I) are described:in which the R1 group is as defined in the specification and includes the condensation of 7-t-butoxyiminomethylcamptothecin in position 20 with a cyclopeptide containing the RGD sequence. Said compounds are endowed both with high affinity for integrin receptors αvβ3 and αvβ5 and with selective cytotoxic activity on human tumour cell lines at micromolar concentrations.

At equimolar concentrations, D-lactic acid dimer is more cytotoxic than L-lactic acid when directly applied to human HeLa cells in culture. The cytotoxicity of D-lactic acid dimer is an independent effect exclusive of the lower pH when applied to cancer cells in culture. At equimolar concentrations, D-lactic acid dimer is less cytotoxic than L-lactic acid when applied to normal human fibroblasts in culture. D-lactic acid dimer is cytotoxic when applied to human retinoblastoma cells in culture in a dose-dependent fashion. The experimental data supports the cytotoxic mechanism of D-lactic acid dimer via the Warburg effect.