176 results about "Human leukemia" patented technology

The invention discloses a method for establishing a PDX (Patient Derived Xenograft) model of human blood tumor. The method comprises the steps of extracting a blood tumor cell of a patient, adding rabbit anti-human thymocyte immunoglobulin ATG (Anti-Thymocyte Globulin) and patient autologous serum, mixing, incubating and after completing the incubation, re-suspending the obtained cell and inoculating in a mouse; and feeding the inoculated mouse with CsA (Cyclosporine A) and lasting for 5-10 days starting from 2 days before the inoculation of the blood tumor cell. The method disclosed by the invention has the beneficial effects that a novel highly immunodeficient NCG mouse independently developed in China is firstly adopted to establish a human leukemia PDX model; by orally taking human thymocyte immunoglobulin pretreatment sample combined with the cyclosporine for a long term, donor-derived T cells are removed and inhibited; and by combining the toxic effect of the ATG on lymphocytes with the functional blocking effect of the CsA on T lymphocytes, the immune function of the T lymphocytes can be persistently inhibited and the success rate of PDX modeling of the blood tumor is significantly improved.

The invention discloses the application of cyclocarya paliurus extract in the preparation of a medicament for preventing and treating leukemia. High-content cyclocarya paliurus extract is obtained by performing the purification treatment combined of water extraction, ethanol extraction, membrane dialysis, and gel chromatographic column on cyclocarya paliurus leaves. The cyclocarya paliurus extract contains 90 to 98 percent of polysaccharide; killing activity detection experiments show that the cyclocarya paliurus extract can be used for improving the activity of the splenocytes for killing human leukemia cells K652 in vitro; the killing multiples can reach 2.47 to the maximum. After granules, tablets, buccal tablets, capsules, pills, powder injection or oral liquid prepared by adding certain additives into the cyclocarya paliurus extract disclosed by the invention are orally taken, the effects of preventing and treating the leukemia can be achieved.

The invention provides an inula wissmannian extract and preparation thereof and application in preparation of an antitumor drug. The extract is gemma alkane type sesquiterpene lactone inula wissmannian lactone methyl, ethyl, propyl, butyl and amyl or sheepear inula herb lactone. The extract has the following chemical structural formula and absolute configuration that: due to the toxicity killing function experiment of inula wissmannian lactone methyl, ethyl, propyl, butyl and amyl or sheepear inula herb lactone on human hepatoma cells HepG2, human prostatic cancer cells PC-3, human gastric carcinoma cells MGC-803, human leukemia cells K562, human nasopharynx cancer cells KB and normal human hepatocytes LO2, the result shows that the gemma alkane type sesquiterpene lactone has strong tumor cell killing function, and proliferation of tumor cells can be inhibited, so that the tumor cells are killed. The animal in-vivo experiment proves that the inula wissmannian plant extract and monomeric compounds have the anti-tumor effect and can serve as active ingredients for preparing the antitumor drug. A novel cancer treatment medicine is provided clinically, and high clinical application values and social benefits are generated.

In this patent, we isolated a novel compound from fruiting body of Antrodia cinnamomea, namely, (22R)-5α-lanosta-8,24-dien-3β,15α,21-triol. This compound possesses preferential cytotoxicity against human leukemia, pancreatic cancer, esophageal cancer, hepatoma, and cervical cancer cells.

The invention discloses nearly 288 novel phosphorylation sites identified in signal transduction proteins and pathways underlying human Leukemia, and provides phosphorylation-site specific antibodies and heavy-isotope labeled peptides (AQUA peptides) for the selective detection and quantification of these phosphorylated sites/proteins, as well as methods of using the reagents for such purpose. Among the phosphorylation sites identified are sites occurring in the following protein types: Adaptor/Scaffold proteins, Cytoskeletal proteins, Cellular Metabolism enzymes, G Protein/GTPase Activating/Guanine Nucleotide Exchange Factor proteins, Immunoglobulin Superfamily proteins, Inhibitor proteins, Lipid Kinases, Nuclear DNA Repair/RNA Binding/Transcription proteins, Serine/Threonine Protein Kinases, Tyrosine Kinases, Protein Phosphatases, and Translation/Transporter proteins.

The invention relates to novel water-soluble polyethylene glycol link-coupled hydroxycamptothecine derivatives and the application thereof. The general molecular formula is MPEG-X-H or H-X-PEG-X-H, wherein X refers to the linking group, such as valine, and H refers to the medicine molecule, such as hydroxycamptothecine and the like. The invention further relates to the synthesis of the prodrug and the release of the active compound under the condition of a 37-degree phosphate buffer solution. The synthetic compounds are adopted to conduct the test of tumor cells in vitro inhibitory activity against human leukemia cells (K562), human colon cancer cells (HT-29) and human hepatoma carcinoma cells (HepG2); the results show that the compounds have remarkable antitumor activity, and the data show that the release rate and in vitro activity of hydroxycamptothecine are closely related to the length of PEG connected and the connection manner. The compounds have wide prospects in development and application of antitumor drugs.

The present invention discloses 10-alkoxy camptothecinie derivatives and its preparation process and application in treating tumor. The compounds have extraneous antitumor activity in different degree to P388 human leukemia cell, A649 human lung cancer cell, PC-3 human prostate cancer cell, HO-8910 human oophoroma cell, and K562 and HL60 human leukemia cell. The experiment of inoculating naked mouse with transplanted PC-3 human prostate cancer cell and inoculating mouse with S180 malignant solid tumor shows that partial compounds possess powerful tumor inhibiting activity.

This invention discloses a method for producing liver cells by inducing haemopoietic stem cells in vitro, comprising: inoculating the haemopoietic stem cells or CD34+ cells into the culture media containing embryonic bovine serum, human stem cell factor, human interleukins 3(IL-3), interleukins 6(IL-6), human liver cell growth factor, human epidermal growth factor(EGF), human acdic fibroblast growth factor, human basic fibroblast growth factor(bFGF), human leukemia inhibitory factor(LIF) and oncostatin M(OSM), and inducing the producing of liver cells in vitro. By applying the method of this invention to induce liver cells from the haemopoietic stem cells, it can acquire a high proportion of liver cells in the culture with good effects.

Provided are phenanthroindolizidine alkaloid derivates and salt thereof as well as preparation, a plant-virus resisting activity, and an anti-cancer activity of phenanthroindolizidine alkaloid derivates and salt thereof. The derivates and the salt thereof have a good plant-virus resisting activity, which is capable of well restraining a tobacco mosaic virus (TMV), and meanwhile, have a good anti-cancer activity, which is capable of well restraining the human lung adenocarcinoma A-549 and the human leukemia HL-60.

The invention relates to a pyrroloquinolines compound and an application thereof. A pyrroloquinoline ring is taken as a matrix and is appropriately and chemically modified to obtain a series of pyrroloquinolines compounds. Preliminary in vitro screen discovers that the pyrroloquinolines compound provided by the invention has a different-degree proliferation inhibition function on multiple tumour cell strains including human cervical cancer cell strain (HeLa), human lung cancer cell strain (A549), human colon cancer cell strain (HCT116), human leukemia cell strain (K562), human breast cancer cell strain (MCF-7) and the like; and moreover, the proliferation inhibition function of most compounds in 5 tumour cells is obviously better or is equivalent to a positive control drug SAHA (N-hydroxy-N'-phenyloctanediamide).

The invention relates to antibodies directed against human Leukemia Inhibitory Factor (LIF) and to a hybridoma cell line producing said antibodies. The invention also relates to a method for blocking/inhibiting the proliferation of stem cells, and to an in vitro method for the diagnosis of diseases associated with unwanted cell proliferation in a subject or for determining the predisposition of a subject to suffer from said disease associated with unwanted cell proliferation, or for prognosis of average life expectancy of a subject suffering from said disease. The therapeutic potential of said antibodies is based on observing that the inhibition of LIF can be used in therapeutic compositions for the treatment of diseases associated with unwanted proliferation.

This invention is directed to potent inhibitors of protein tyrosine kinase alone or in synergistic combination with antiangiogenic or chemotherapeutic agents for the abrogation of mature vasculature within chemotherapeutic refractory tumors, pharmaceutical compositions comprising these compounds, and to the use of these compounds for treating a patient suffering from or subject to disorders/conditions involving cell proliferation, and particularly treatment of brain cancer, ovarian cancer, pancreatic cancer prostate cancer, and human leukemias, such as CML, AML or ALL.

The present invention relates to an indirubin-3′-oxime derivative as potent cyclin dependent kinase inhibitor with anti-cancer activity. More particularly, this invention relates to an indirubin-3′-oxime derivative as potent cyclin dependent kinase inhibitor having excellent anti-cancer activity against human lung cancer cell, human fibro sarcoma cell, human colon cancer cell, human leukemia cell, human stomach cancer cell, human nasopharyngeal cancer cell and/or human breast cancer cell.

The invention provides a histone deacetylases (HDACs) inhibitor compound N<1>-(6-(hydroxyamino)-6-oxohexyl)-N<4>-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-2-naphthyl)terephthalamide having an obvious inhibitory effect on both HDACs and human leukemia U937 cell growth and proliferation, wherein the inhibitory effect is significantly stronger than that of a common HDACs inhibitor trichostatin TSA. The invention also provides a preparation method and a process route of the compound.