285 results about "Acinic cell carcinoma" patented technology

The present invention relates to a novel gene, CaSm, that is highly expressed in cancer tissues and cell lines, especially pancreatic cancer. The full length cDNA of CaSm encodes a protein of 133 amino acids. CaSm contains the two Sm motifs found in the common snRNP proteins, with the greatest homology to the Sm G protein (60% similarity). The present invention further encompasses CaSm peptides, fusion proteins, host cell expression systems, antibodies to CaSm, antisense CaSM molecules, and compounds that modulate CaSm gene expression or CaSm activity. Antisense CaSm RNA is able to alter the transformed phenotype of pancreatic cancer cells by reducing their ability to form large colonies in soft agar when compared to untransfected cells. The present invention also encompasses methods for disease diagnosis, drug screening and the treatment of cancer.

The invention discloses a CRISPR-Cas9 targeted and knockout human breast cancer cell SLC30A1 gene and the specific sgRNA of the gene. Firstly, sgRNA for specific targeting of the SLC30A1 gene is obtained, and a base sequence of the sgRNA is shown in SEQ ID NO.1; secondly, the sgRNA of the SLC30A1 gene is constructed to a lentivirus vector system containing Cas9 proteins; finally, CRISPR/Cas9 lentivirus containing the sgRNA is infected with a human breast cancer cell MDA-MB-231 to obtain a cell strain of which the SLC30A1 protein expression level is obviously reduced. The CRISPR-Cas9 targeted and knockout human breast cancer cell SLC30A1 gene and the specific sgRNA of the gene disclosed by the invention have the advantages of simple operation steps, good sgRNA targetability and high cuttingefficiency on the SLC30A1 gene; in addition, the constructed CRISPR/Cas9 lentivirus system has the advantage of high knockout efficiency and can specifically knock out the SLC30A1 gene so as to obtain the human breast cancer cell having the SLC30A1 gene knocked out; therefore, a powerful tool is provided for further researching an action mechanism of the SLC30A1 in breast cancer cells.

The invention discloses a class of anti-tumor compounds containing a triazole heterocyclic structure and an application thereof, belonging to the technical field of medicinal chemistry. The compounds containing the triazole heterocyclic structure introduce quintuple 1,2,3-triazole ring in the form of side chains through the amino condensation, bromination, nitrine substitution, link reaction and other reactions on the basis of naphthalimide parent structure, select tetrazolium salt reduction to test 7721 hepatocellular in the experiment of inhibiting proliferation of tumor cells, and also select sulfonyl rhodamine B protein staining method to test MCF-7 breast cancer cells. The experiment results show that the anti-tumor compounds have wide anti-tumor activity and good inhibition effect on the normal growth of tumor cells derived from different tissues of liver cancer, breast cancer and the like.

The invention provides a preparation method of a double chimeric antigen receptor gene modified T lymphocyte targeting breast cancer stem cells. The preparation method is characterized in that integrin-associated protein (CD47) and transcriptional coactivator (TAZ) are both highly expressed in breast cancer tissues, especially in the breast cancer stem cells; by established CD47 and TAZ over-expressed breast cancer cells, higher proliferation and metastasis capacity and cancer stem cell features are shown. Extracellular domain of the two breast cancer stem cell antigens CD47 and TAZ are targeted to generate monoclonal strains in specific binding under immunity action, and single-chain antibodies in specific binding with the CD47 and TAZ by genetic recombination are obtained to construct a human CD47 and TAZ containing double chimeric antigen receptor gene recombined to a virus vector to transfect human T lymphocyte. By high expression of the double chimeric antigen receptor gene in specific binding with human CD47 and TAZ expressing breast cancer stem cells, a first signal and a costimulatory signal can be activated to trigger anti-breast-cancer cytotoxicity, and high cytotoxicity in in-vivo and in-vitro anti-cancer experiments is achieved.

The invention relates to the technical field of medicines, and provides a docetaxel and sulforaphane loaded hyaluronic acid modified poly(lactic-co-glycolic acid) copolymer self-assembled nano-particle, a preparation method thereof and an application of the self-assembled nano-particle in preparing a medicine for treating breast cancer. The microscopic structure of the nano-particle comprises a hydrophobic PLGA (poly(lactic-co-glycolic acid)) core and a hydrophilic HA (hyaluronic acid) shell, wherein the PLGA core is used for wrapping a medicine DTX (docetaxel) or SFN (sulforaphane), and the hydrophilic shell HA can target a breast cancer stem cell highly expressing a CD44 receptor. In-vitro cytotoxicity tests indicate that the drug-loaded nano-particle can play a good role in resisting differentiation of mammary gland cells and breast cancer stem cells when compared with free medicines; in-vivo tumor inhibition experiments indicate that the drug-loaded medicine is more effective than free medicines and combined free medicines, and has a small systematic toxicity. The nano-particle can play a role in simultaneously performing target differentiating on mammary gland cells and breast cancer stem cells, and a new strategy is provided to treatment of breast cancer.

The invention provides an antihuman ROR1 (receptor tyrosine kinase-like orphan receptor) monoclonal antibody and a preparation method and application thereof. The antibody is provided with a heavy chain variable region and a light chain variable region, each of the heavy chain variable region and the light chain variable region is provided with three CDRs (complementarity determining regions), the amino acid sequence of the CDR1 of the heavy chain variable region is SEQ ID NO:21 or NO:27, the amino acid sequence of the CDR2 is SEQ ID NO:22 or NO:28, and the amino acid sequence of the CDR3 is SEQ ID NO:23 or NO:29; the amino acid sequence of the CDR1 of the light chain variable region is SEQ ID NO:24 or NO:30, the amino acid sequence of the CDR2 is SEQ ID NO:25 or NO:31, and the amino acid sequence of the CDR3 is SEQ ID NO:26 or NO:32. The antibody is good in monomer stability and high in specificity, specific markers of the leukemia can be detected in advance by monitoring specific cells, ROR1 targets in breast cancer cells can be further combined, and silence experiment completion is facilitated.

The present invention provides novel methods of preventing and treating prostate cancer with tetrandrine, a bisphehol-isoquinoline alkaloid isolated from the Chinese herb Stephania tetrandra. The present invention also provides the use of tetrandrine for the manufacture of a pharmaceutical composition for treating prostate cancer. The tetrandrine can be used as any isomer of tetrandrine such as the (R,R), (S,S), (R,S), and (S,R) isomers and any combination of these isomers. The present invention also provides methods of inhibiting the growth of prostate cancer cells in vitro by contacting the cells with tetrandrine. The present invention also provides methods of inducing apoptosis in prostate cancer cells in vitro by contacting the cells with tetrandrine.

The invention discloses application of four kinds of known flavonoids compounds to treatment of breast cancers. The four kinds of known flavonoids are known compoundes obtained by separating fruit of sinopodophyllum emodi and have structures shown as structural formulas 1-4 in the specification. Experiments on the effect of the kinds of compounds on inhibiting human breast cancer cells show that the series of compounds have a favorable effect on inhibiting the proliferation of the breast cancer cells.

The present invention relates to a novel application of a compound. The compound 4-hydroxy-2,3-dimethoxy-6-methyl-5-(3,7,11-trimethyl-dodeca-2,6,10-trienyl)-cyclohex-2-enone of the invention is isolated and purified from the extracts of Antrodia camphorata, which can be applied for inhibiting the survival of pancreatic cancer cells and be used as a pharmaceutical composition to inhibit the pancreatic tumor growth.

The flavonoid family of phytochemicals, particularly those derived from soy, has received attention regarding their hormonal activity and their effects on human health and disease. The types and amounts of these compounds in soy and other plants are controlled by both constitutive expression and stress-induced biosynthesis. The health benefits of soy may therefore be dependent upon the amounts of the various hormonally active phytochemicals present. We have identified increased biosynthesis of the isoflavonoid phytoalexin compounds, Glyceollins I, II and III, in soy plants grown under stressed conditions (elicited soy), which exhibit marked anti-estrogenic effects on ER function. Here we demonstrate that specific glyceollins, isolated from elicited soy, displayed anti-estrogenic activity, suppressing basal and estrogen stimulated colony formation of ER-positive estrogen dependent breast cancer cells and inhibiting ER-dependent gene expression of progesterone receptor (PgR) and stromal derived factor-1 (SDF1/CXCL12). Examining the effects of glyceollin on in vivo tumor formation/growth we demonstrate the ability of glyceollins to significantly suppress basal and estrogen-stimulated tumor growth of ER-positive MCF-7 breast and BG-1 ovarian carcinoma cells in ovariectomized female nude mice. We further demonstrate that the effects of glyceollins on suppression of tumor growth correlate with inhibition of estrogen stimulated PgR expression. In contrast to the uterotropic activity of tamoxifen the glyceollins displayed no uterine agonist activity. The Glyceollin (I-III) compounds may represent an important component of the health effects of soy as well as represent novel anti-estrogens useful in the prevention or treatment of breast and ovarian carcinoma.

The invention discloses an application of a gene marker in diagnosis and treatment of breast cancer. The gene is LINC02544, the invention firstly discovers that expression of LINC02544 in a breast cancer patient is obviously up-regulated, and verification is further carried out through QPCR, so that LINC02544 can be applied to diagnosis of the breast cancer as a biomarker. The invention also discloses that proliferation of breast cancer cells can be effectively inhibited and migration and attack rates of the breast cancer cells can be reduced by reducing expression of LINC02544, so that LINC02544 can be applied to treatment of the breast cancer and shift thereof as a drug target.

The invention discloses application of a cancer suppressor gene FBXW7 in preparation of drugs used for preventing or treating breast tumors, an expression vector and a diagnosis medicine, belonging to the field of medical biotechnology. Specifically, the invention provides application of the cancer suppressor gene FBXW7 in preparation of drugs used for preventing or treating breast tumors, the expression vector constructed from the gene FBXW7 and a vector pcDNA3.1 and a preparation method thereof, and the breast tumor diagnosis medicine at least including a pair of primers capable of specific amplification of the gene FBXW7 and composed of an upstream primer and a downstream primer. Expression of the cancer suppressor gene FBXW7 is closely related to breast cancer molecular subtyping; the cancer suppressor gene FBXW7 has specific low expression in a breast cancer with high grade malignancy and exerts an inhibitory effect on growth of breast cancer cells. Thus, screening of breast cancers with low expression of the gene has significant meaning to prognostic prediction of the breast cancers; and specific recovery of expression of the cancer suppressor gene in breast cancer cells provides a novel approach for targeted individualized treatment of the breast cancers.

The invention provides a separation method of breast cancer stem cells and belongs to the field of cell separation. The separation method comprises the following steps of: (1) preparing a hydrothorax single-cell suspension; (2) carrying out immunomagnetic bead negative sorting, and separating and removing non-breast-cancer cells, so as to obtain breast cancer epithelial cell sap; and (3) carrying out enrichment and purification on the breast cancer epithelial cell sap obtained in the step (2) by utilizing a non-adhesive culture method, so as to obtain breast cancer stem cell spheroids. Compared with the prior art, the separation method has the beneficial effects that the surfaces of the cells obtained by utilizing the separation method are not interfered by antibodies and magnetic beads; the separation efficiency of the breast cancer cells and the purity of the breast cancer cells after the breast cancer stem cells are enriched can be guaranteed; and not only can a small quantity of breast cancer epithelial cells be effectively separated, but also the separation time is shortened, and the production cost is lowered, so that the separation method is safe and effective.

The invention provides a biological marker of oral cavity oropharynx squamous-cell carcinoma and application of the biological marker. The biological marker is GPD1L and/or HIF1 alpha, and especially a combination of the GPD1L and the alpha. According to the invention, by detecting expression levels of the GPD1L and/or the HIF1 alpha, oral cavity oropharynx squamous-cell carcinoma auxiliary diagnosis, oral cavity oropharynx squamous-cell carcinoma patient prognosis, and/or prognosis cervical lymph node metastasis prediction can be performed.

The invention discloses application of a biomarker as a target to the diagnosis and the treatment of lung adenocarcinoma. Particularly, the biomarker is CLINT1. The worldwide incidence rate of the lung adenocarcinoma continuously increases; an effective biomarker is needed to diagnose and/or treat the lung adenocarcinoma. The application is proven through an experiment; the expression, in a patient suffered from the lung adenocarcinoma, of the CLINT1 is up-regulated; the multiplication and the invasion of a lung adenocarcinoma cell can be inhibited by decreasing the expression of a CLINT1 gene. Prompted, the CLINT1 disclosed by the invention can be used as a marker for the early diagnosis of the lung adenocarcinoma; meanwhile, the gene can be also used as a potential drug target spot for treating the lung adenocarcinoma; the foundation is provided for the accurate medical treatment of the lung adenocarcinoma.

The invention discloses a novel use of formononetin in pharmacy, and in particular discloses an application of formononetin in preparing a medicine for treating breast cancer. The applicants discover that formononetin can remarkably inhibit cell proliferation of breast cancer for the first time and discover through experiments that formononetin retards cell cycle by way of inactivating IGF1/IGF1R-PI3K/AKT, so that formononetin generates good activity of inhibiting cell proliferation of breast cancer, and can be used as a cell cycle retardant to replace tamoxifen to inhibit cell proliferation of breast cancer so as to prevent and treat breast cancer. In addition, the applicants in experiments further discover that formononetin can be used as the cycle retardant for cancer cells and has specific targeting to normal cells as an agonist, so that formononetin has very high development value and real application value.

A mitochondria targeted gold nanoparticle (T-3-BP-AuNP) decorated with 3-bromopyruvate (3-BP) and delocalized lipophilic triphenylphosphonium (TPP) cations to target the mitochondrial membrane potential (Δψm) was developed for delivery of 3-BP to cancer cell mitochondria by taking advantage of higher Δψm in cancer cell compared to normal cells. This construct showed remarkable anticancer activity in prostate cancer cells compared to non-targeted construct NT-3-BP-AuNP and free 3-BP. Anticancer activity of T-3-BP-AuNP was further enhanced upon laser irradiation by exciting the surface plasmon resonance band of AuNP and thereby utilizing a combination of 3-BP chemotherapeutic and AuNP photothermal effects. T-3-BP-AuNPs showed markedly enhanced ability to alter cancer cell metabolism by inhibiting glycolysis and demolishing mitochondrial oxidative phosphorylation in prostate cancer cells. Our findings demonstrated that mitochondria targeted and concerted chemo-photothermal treatment of glycolytic cancer cells with a single NP may have promise as a new anticancer therapy.

Cyclic peptide compounds and derivatives thereof having antitumor activity as shown by treatment of human melanoma, pancreatic, breast, prostate cancer cells.