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266 results about "Anthracycline" patented technology

Anthracyclines are a class of drugs used in cancer chemotherapy that are extracted from Streptomyces bacterium. These compounds are used to treat many cancers, including leukemias, lymphomas, breast, stomach, uterine, ovarian, bladder cancer, and lung cancers. The first anthracycline discovered was daunorubicin (trade name Daunomycin), which is produced naturally by Streptomyces peucetius, a species of actinobacteria. Clinically the most important anthracyclines are doxorubicin, daunorubicin, epirubicin and idarubicin.

Method for detecting antitumor drugs by constructing electrochemical sensor with two ratios in same system

The invention discloses a method for detecting antitumor drugs by constructing an electrochemical sensor with two ratios in a same system. The method specifically comprises the following steps that 1, the antitumor drugs and two electrochemical active substances are added into a phosphate buffer solution to prepare a mixed solution; 2, a bare glassy carbon electrode is taken as a working electrode to be placed in an electrolyte solution containing the mixed solution to be stabilized for a period of time, and then square wave voltammetry detection is conducted; 3, ratios (I1 and I2) of peak currents of the antitumor drugs with the different concentrations to peak currents of the other two electrochemical active substances with the different current peak positions are obtained, linear equations are constructed for the concentrations of the antitumor drugs according to I1 and I2, and then the electrochemical sensor with two ratios can be developed. The method is easy to operate, mild in condition and high in antijamming property, stability and sensitivity, can be used for efficient detection on the anthracycline antitumor drugs in serum and has an important application prospect in the fields of bioanalysis and clinical diagnosis.
Owner:QINGDAO UNIV

Pharmaceutical formulations employing short-chain sphingolipids and their use

This invention pertains to pharmaceutical formulations which comprise (i) a drug (e.g., an amphiphilic drug) (e.g., an anthracycline) (e.g., doxorubicin) and (ii) a short-chain sphingolipid (e.g., a short-chain glycosphingolipid or a short-chain sphingomyelin) (e.g., N-octanoyl-glucosylceramide, referred to as C8-GlcCer) (e.g., N-hexanoyl-sphingomyelin, referred to herein as C6-SM), and which provide improved drug delivery and efficacy. The short-chain sphingolipidis selected from compounds of the following formula: wherein: R1 is independently: an O-linked saccharide group; or an O-linked polyhydric alcohol group; or: R1 is independently: an O-linked (optionally N-(C1-4alkyl)-substituted amino)-C1-6alkyl-phosphate group; or an O-linked (polyhydric alcohol-substituted)-C1-6alkyl-phosphate group; R2 is independently C3-9alkyl, and is independently unsubstituted or substituted; R3 is independently C7-19alkyl, and is independently unsubstituted or substituted; R4 is independently —H, —OH, or —O—C1-4alkyl; RN is independently —H or C1-4alkyl; the bond marked with an alpha (α) is independently a single bond or a double bond; if the bond marked with an alpha (α) is a double bond, then R5 is —H; if the bond marked with an alpha (α) is a single bond, then R5 is —H or —OH; the carbon atom marked (*) is independently in an R-configuration or an S-configuration; the carbon atom marked (**) is independently in an R-configuration or an S-configuration; and pharmaceutically acceptable salts, solvates, esters, ethers, chemically protected forms thereof. In one embodiment, the pharmaceutical formulation is a liposomal pharmaceutical formulation prepared using a mixture of lipids comprising, at least, vesicle-forming lipids (e.g., phospholipids) (e.g., phosphatidylcholines) (e.g., fully hydrogenated soy phosphatidylcholine (HSPC)) (e.g., dipalmitoyl-phosphatidylcholine (DPPC)) and said short-chain sphingolipid, and optionally cholesterol and optionally a vesicle-forming lipid which is derivatized with a polymer chain (e.g., a phosphatidylethanolamine (PE) which is derivatized with polyethyleneglycol (PEG)) (e.g., N-(carbonyl-methoxypolyethylene glycol 2000)-1,2-distearoyl-sn-glycero-3-phosphoethanolamine sodium salt (MPEG2000-DSPE). The present invention also pertains to methods for the preparation and use of such formulations.
Owner:NETHERLANDS CANCER INST

Combination therapy for hyperproliferative disease

This invention relates a method of treating hyperproliferative diseases. More particularly, the present invention relates to a method of treating hyperproliferative diseases, such as cancer, comprising the step of administering to a mammal in need of such treatment, either simultaneously or sequentially, (i) a therapeutically effective amount of a taxane derivative, a platinium coordination complex selected from the group consisting of carboplatin, tetraplatin, and topotecan, a nucleoside analog selected from the group consisting of gemcitabine hydrochloride and 5-FU, an anthracycline, a topoisomerase selected from the group consisting of etoposide, teniposide, amsacrine, topotecan, and Camptosar®, an aromatase inhibitor; and (ii) a therapeutically effective amount of an isothiazole derivative. The combinations of the present invention may optionally include an anti-hypertensive agent. This invention also relates to pharmaceutical compositions useful in the treatment of hyperproliferative diseases in mammals, containing such combinations. The present invention also relates to kits having a first compartment with a compound of formula 1 and a second compartment containing a taxane derivative, a platinum coordination complex, a nucleoside analog, an anthracycline, a topoisomerase inhibitor, or an aromatase inhibitor and a third compartment containing an anti-hypertensive agent.
Owner:PFIZER INC

Submicron liposome suspensions obtained from preliposome lyophilizates

This invention provides an aqueous / t-butanol solvent-system, facile reconstitute, submicron-reconsitiute preliposome-lyophilaye and method of its preparation and use.In one embodiment this entails a modified method for the preparation of a submicron and stable liposome formulation of the non-cross-resistant anthracycline Annamycin is described. The optimal lipid composition was DMPC:DMPG at a 7:3 molar ratio and the optimal lipid:drug weight ratio 50:1. The selected formulation is a preliposome lyophilized powder that contains the phospholipids, Annamycin, and 1.7 mg Tween 20 per mg of Annamycin. The liposome suspension is obtained on the day of use by adding normal saline at 37° C. (1 ml per mg Annamycin) and hand-shaking for one minute. The presence of Tween 20 is essential in shortening the reconstitution step (from >2 hours to 1 minute), avoiding the early formation of free drug crystals, and reducing the median particle size (from 1.5 μm to 0.15-0.20 μm) without destruction of the liposome vesicles. The chemical stability of the preliposome powder at room temperature was >3 months and the chemical and physical stability of the liposome suspension at room temperature >24 hours. The in vitro cytotoxicity of the formulation was equivalent to that prepared by the standard evaporation method. The results of the study indicate that small amounts of surfactant may be used to enhance the reconstitution step and reduce the liposome size of lyophilized liposome formulations of lipophilic drugs.
Owner:BOARD OF REGENTS

Method for screening anthracycline cardiotoxicity genes through mRNA expression profiles and competitive endogenesis RNA expression profiles jointly

The invention relates to a method for screening anthracycline cardiotoxicity genes through mRNA expression profiles and competitive endogenesis RNA expression profiles jointly. The method includes the steps that expression values of a large quantity of genes are detected through mRNA and competitive endogenesis RNA expression profile chips, and the correlations of all the genes are ordered; the obtained mRNA feature genes and the obtained competitive endogenesis RNA feature genes are combined; a gene pool is subjected to further gene selection with a genetic algorithm; differential expression genes are selected by comparing the data between different samples of mRNA and competitive endogenesis RNA joint expression profiles of breast cancer patients, breast cancer AIC patients and able-bodied persons; the differential expression genes are predicted, and the genes with the scores larger than 140 and free energy smaller than 20 are selected as reliable target genes; genes with obvious differences are selected from the target genes, and constructed breast-cancer anthracycline cardiotoxicity attacking target genes are verified through the residual RNA. By means of the method, more reliable potential gene markers related to anthracycline cardiotoxicity can be selected as a candidate.
Owner:JINZHOU MEDICAL UNIV

Polymer vesicle of double-loading anthracycline ring medicine and photosensitizer, having bubble generation function, as well as preparation

The invention relates to a polymer vesicle of a double-loading anthracycline ring medicine and a photosensitizer, having a bubble generation function, as well as preparation. A pH / temperature double-sensitive multifunctional polymer vesicle of hydrophilic inner cavity loaded anthracycline ring medicine and a hydrophobic film loaded photosensitizer, having the bubble generation function, is prepared by taking an amphiphilic triblock copolymer PCL-b-PEG-b-PCL as a material. The anthracycline ring medicine is wrapped with and loaded in the hydrophilic inner cavity by an ammonium hydrogen carbonate gradient active medicine loading method, ammonium hydrogen carbonate can be decomposed under the condition of low pH value or heating to generate carbon dioxide bubbles, the structure of the vesicleis broken and the wrapped medicines are released rapidly. After the medicines are delivered to the local part of tumor through EPR (enhanced permeability and retention) targeting, the therapeutic effect of the anthracene ring chemotherapeutic medicines on the tumor can be obviously improved under illumination. The polymer vesicle can serve as a medicine carrier to wrap and load hydrophilic and hydrophobic medicines simultaneously, has a stable structure, has high biocompatibility and degradability, and has a wide application prospect on the aspects of medicine delivery and controllable release and chemotherapeutic combined photothermal therapy on the tumor.
Owner:INST OF BIOMEDICAL ENG CHINESE ACAD OF MEDICAL SCI

Tumor-targeted sound and light power medicine-carrying nanometer nano-micelle, and preparation method and purpose thereof

The invention relates to a tumor-targeted sound and light power medicine-carrying nanometer nano-micelle, and a preparation method and a purpose thereof. The medicine-carrying nanometer nano-micelle is structurally characterized in that porphyrins compounds and anthracyclines chemotherapeutic medicine form a nanometer composition through a pi-pi conjugation effect; and amphiphilic block copolymers with PEO (polyoxyethylene) or PEG (polyethylene glycol) hydrophilic segments cover nanometer compounds through the hydrophobic effect to form a hydrophilic case. The medicine-carrying nanometer nano-micelle is in a regular spherical form, and has the advantages of uniform distribution, stable property and high medicine carrying capacity; the medicine can be conveyed to the tumor focus in the targeted way and can be effectively enriched in the tumor tissue; under the ultrasound (illumination) condition, the treatment effect of the anthracyclines chemotherapeutic medicine on the tumor can be obviously enhanced; and the tumor drug resistance can be effectively reversed. Wide clinic application prospects can be realized in an aspect of combined tumor treatment by a sound (light) power therapy method and chemotherapy.
Owner:TIANJIN MEDICAL UNIV
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