54 results about "Amino acid transporter" patented technology

The invention discloses application of an amino acid transporter gene OsAAP3 in rice seed selection, and belongs to the technical field of genetic engineering. An amino acid sequence of encoded protein of the gene OsAAP3 is specified in SEQ ID NO.1, and a Cdna sequence is specified in SEQ ID NO.2. According to the application of the amino acid transporter gene OsAAP3 in rice seed selection, by constructing a rice plant which is interfered by the gene OsAAP3, and constructing a rice plant which is over-expressed by the gene OsAAP3, it is discovered that reduction of genetic expression of the gene OsAAP3 can increase tiller number of the rice and spike number in each rice plant, and therefore the gene OsAAP3 can be used in rice seed selection for increasing the rice yield. The gene OsAAP3 has important application value in expounding influence of amino acid transportation on growth and development process of the plant.

A human antibody or a functional fragment thereof having specific binding ability to CD98 which is derived from the cell membrane of cancer cells and is in the form of a complex with a protein having an amino acid transporter activity (for example, LAT1) is disclosed. This antibody binds to CD98 in the form of a dimer with LAT1 on the surface of cancer cells, specifically attacks cancer cells expressing CD98 via the immune system by ADCC or CDC, and further inhibits amino acid uptake of the cancer cells via LAT1, to suppress growth of the cancer cells. Accordingly, a preventive and therapeutic agent for cancer comprising this antibody or a fragment thereof, which acts on various cancers, is specific to cancer, and causes no side effect, is provided.

The invention relates to an amphiphilic targeting functional material based on high expression of tumor amino acid transporter ATB<0, +> and an application of nano preparation modified by the same in targeting therapy of tumor. In the amphiphilic targeting functional material, stearic acid (SA) serves as a hydrophobic end while amino acid (AA) serves as a target end, and the middle connection bridge is polyethylene glycol (PEG). The nano preparation modified by the amphiphilic targeting functional material can remarkably improve the tumor targeting ability of an active drug. The characteristics of the invention are that the targeting functional material is easy to prepare, and the nano preparation modified by the targeting functional material can actively target the amino acid transporter ATB<0, +> with high expression of tumor, has high biocompatibility and can remarkably improve the drug therapeutic effect.

The invention provides isolated nucleic acids molecules, designated 38594, 57312, 53659, 57250, 63760, 49938, 32146, 57259, 67118, 67067, 62092, FBH58295FL, 57255, and 57255alt nucleic acid molecules, which encode transporter molecules, including sugar transporters, organic anion transporters, amino acid transporters, and phospholipid transporters. The invention also provides antisense nucleic acid molecules, recombinant expression vectors containing 38594, 57312, 53659, 57250, 63760, 49938, 32146, 57259, 67118, 67067, 62092, FBH58295FL, 57255, and 57255alt nucleic acid molecules, host cells into which the expression vectors have been introduced, and non-human transgenic animals in which a 38594, 57312, 53659, 57250, 63760, 49938, 32146, 57259, 67118, 67067, 62092, FBH58295FL, 57255, and 57255alt gene has been introduced or disrupted. The invention still further provides isolated 38594, 57312, 53659, 57250, 63760, 49938, 32146, 57259, 67118, 67067, 62092, FBH58295FL, 57255, and 57255alt polypeptides, fusion polypeptides, antigenic peptides and anti-38594, 57312, 53659, 57250, 63760, 49938, 32146, 57259, 67118, 67067, 62092, FBH58295FL, 57255, and 57255alt antibodies. Diagnostic and therapeutic methods utilizing compositions of the invention are also provided.

A human antibody or a functional fragment thereof having specific binding ability to CD98 which is derived from the cell membrane of cancer cells and is in the form of a complex with a protein having an amino acid transporter activity (for example, LAT1) is disclosed. This antibody binds to CD98 in the form of a dimer with LAT1 on the surface of cancer cells, specifically attacks cancer cells expressing CD98 via the immune system by ADCC or CDC, and further inhibits amino acid uptake of the cancer cells via LAT1, to suppress growth of the cancer cells. Accordingly, a preventive and therapeutic agent for cancer comprising this antibody or a fragment thereof, which acts on various cancers, is specific to cancer, and causes no side effect, is provided.

An object of the present invention is to provide a monoclonal antibody which is useful for treating or diagnosing a disease relating to system ASC amino acid transporter 2 (ASCT2) or a method using the antibody. The present invention provides a monoclonal antibody which specifically recognizes a native three-dimensional structure of an extracellular region of system ASC amino acid transporter 2 (ASCT2) and binds to the extracellular region, or an antibody fragment thereof; a hybridoma which produces the antibody; a DNA which encodes the antibody; a vector which contains the DNA; a transformant obtainable by introducing the vector; a process for producing an antibody or an antibody fragment thereof using the hybridoma or the transformant; and a therapeutic agent using the antibody or the antibody fragment thereof, and a diagnostic agent using the antibody or the antibody fragment thereof.

A novel amino acid transporter molecule mediating transportation of amino acids, which are nutrients essentially required in the survival and proliferation of various normal cells constituting a living body and various pathology-associated abnormal cells such as tumor cells, into cells and being expressed specifically in tumor cells compared with normal cells; and drugs for treating various pathogenic conditions such as tumor (cancer) which are obtained by identifying and isolating the above amino acid transporter molecule and identifying a substance capable of inhibiting the biological activity and / or expression of this molecule. Intensive studies were made to identify a tumor cell membrane surface molecule associating or interacting with a cell membrane surface 4F2hc molecule seemingly playing an important role in the activation of an unknown amino acid transporter. As a result, a gene encoding the novel amino acid transporter molecule, which mediates the incorporation of various neutral amino acids, various drugs or physiological substances into cells, has been found out and a substance capable of inhibiting the incorporation of amino acids via this molecule and thus inhibiting the proliferation of tumor cells has been also found out.

The compounds of the invention are inhibitors of excitatory amino acid transporters (EAAT) that penetrate the blood-brain barrier to access the central nervous system. The compounds of the invention follow the structural formula:or a salt, ester or prodrug thereof, wherein X is a halogen, such as fluorine, or a radionuclide, such as fluorine-18. The compounds and methods described herein can be used for the treatment of, e.g., neurodegenerative disorders (e.g., amyotrophic lateral sclerosis), ischemia, spinal cord injury, and traumatic brain injury in a patient (e.g., a human). The invention further provides compounds and methods for the synthesis and use of radiographic tracers to diagnose and follow the progression of such disorders.

The invention discloses application of specific genes of staphylococcus epidermidis. The genes are Amino acid transporter LysE genes, and the Genbank login number is 3240523. Through the primer, whether the Amino acid transporter LysE genes exist in a sample or not is detected through a polymerase chain reaction, and then whether the staphylococcus epidermidis exists in the sample or not is determined. The staphylococcus epidermidis can be detected through the specific genes fast, easily, conveniently and accurately.

An object of the present invention is to provide a monoclonal antibody which is useful for treating or diagnosing a disease relating to system ASC amino acid transporter 2 (hereinafter, referred to as “ASCT2”) or a method using the antibody. The present invention provides a monoclonal antibody which specifically recognizes a native three-dimensional structure of an extracellular region of ASCT2 and binds to the extracellular region, or an antibody fragment thereof; a hybridoma which produces the antibody; a DNA which encodes the antibody; a vector which contains the DNA; a transformant obtainable by introducing the vector; a process for producing an antibody or an antibody fragment thereof using the hybridoma or the transformant; and a therapeutic agent using the antibody or the antibody fragment thereof, and a diagnostic agent using the antibody or the antibody fragment thereof.

A novel amino acid transporter molecule mediating transportation of amino acids, which are nutrients essentially required in the survival and proliferation of various normal cells constituting a living body and various pathology-associated abnormal cells such as tumor cells, into cells and being expressed specifically in tumor cells compared with normal cells; and drugs for treating various pathogenic conditions such as tumor (cancer) which are obtained by identifying and isolating the above amino acid transporter molecule and identifying a substance capable of inhibiting the biological activity and / or expression of this molecule. Intensive studies were made to identify a tumor cell membrane surface molecule associating or interacting with a cell membrane surface 4F2hc molecule seemingly playing an important role in the activation of an unknown amino acid transporter. As a result, a gene encoding the novel amino acid transporter molecule, which mediates the incorporation of various neutral amino acids, various drugs or physiological substances into cells, has been found out and a substance capable of inhibiting the incorporation of amino acids via this molecule and thus inhibiting the proliferation of tumor cells has been also found out.

The present invention includes inhibitors of the amino acid transporter ATB0,+ and methods of uses thereof.

A novel amino acid transporter molecule mediating transportation of amino acids, which are nutrients essentially required in the survival and proliferation of various normal cells constituting a living body and various pathology-associated abnormal cells such as tumor cells, into cells and being expressed specifically in tumor cells compared with normal cells; and drugs for treating various pathogenic conditions such as tumor (cancer) which are obtained by identifying and isolating the above amino acid transporter molecule and identifying a substance capable of inhibiting the biological activity and / or expression of this molecule. Intensive studies were made to identify a tumor cell membrane surface molecule associating or interacting with a cell membrane surface 4F2hc molecule seemingly playing an important role in the activation of an unknown amino acid transporter. As a result, a gene encoding the novel amino acid transporter molecule, which mediates the incorporation of various neutral amino acids, various drugs or physiological substances into cells, has been found out and a substance capable of inhibiting the incorporation of amino acids via this molecule and thus inhibiting the proliferation of tumor cells has been also found out.