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seminoma/l tyrosine
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GDNF-induced seminomatous tumours in mouse--an experimental model for human seminomas?
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Glial-cell-line-derived neurotrophic factor (GDNF) is a distant member of the transforming growth factor superfamily. It binds to and activates a receptor complex consisting of GFR-alpha1 and Ret receptor tyrosine kinase. In testis, GDNF is expressed by Sertoli cells. We have shown by transgenic
RET gene mutations are not involved in the origin of human testicular seminoma.
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Testicular germ cell cancers are the most common solid malignancies in young men, but their pathogenesis remains undetermined although some epidemiological data have implicated both environmental and genetic factors. Glial cell-derived neurotrophic factor (GDNF) is secreted by Sertoli cells, and
Identification of potential core genes and miRNAs in testicular seminoma via bioinformatics analysis.
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Testicular seminoma is one of the most common tumours in the field of urology, and its aetiology is still unclear. The aim of the present study was to identify the factors responsible for the development of testicular cancer and to investigate whether mutations in these genes were primarily
c-KIT is frequently mutated in bilateral germ cell tumours and down-regulated during progression from intratubular germ cell neoplasia to seminoma.
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Testicular germ cell tumours (TGCTs) are the most frequent cancer type in young men; 5% of these patients develop a second TGCT in the contralateral testis. The pathogenesis of TGCT is closely linked to primordial germ cells (PGCs) or gonocytes. The receptor tyrosine kinase (c-KIT) is necessary for
Generation and characterization of novel monoclonal antibodies to the Ret receptor tyrosine kinase.
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Ret is a tyrosine kinase receptor involved in several human diseases germ-line mutations are responsible for multiple endocrine neoplasia type 2 syndromes while somatic mutations of Ret are found in sporadic medullary thyroid carcinomas. In the present work, we describe the generation and
[KIT receptor in testicular seminoma].
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KIT receptor expression is observed in the majority of seminomas. Activation of KIT tyrosine kinase due to somatic mutations has been demonstrated. Mutations of the c-kit gene in testicular seminomas are located in exon 17. Inhibitors of KIT tyrosine kinase activity can have a therapeutic role,
Detection of c-kit exons 11- and 17-activating mutations in testicular seminomas by high-resolution melting amplicon analysis.
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A subgroup of testicular seminomas has been reported to contain activating mutations in KIT, the transmembrane tyrosine kinase receptor encoded by the c-kit gene. Most mutations are in exon 17, although exon 11-activating mutations have recently been described. For patients refractory to standard
Amplification and overexpression of the KIT gene is associated with progression in the seminoma subtype of testicular germ cell tumors of adolescents and adults.
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We have previously identified amplification at 4q12 in testicular germ cell tumors of adolescents and adults centered around the KIT gene encoding a tyrosine kinase transmembrane receptor. Analysis of primary testicular germ cell tumors totaling 190 cases revealed 21% of the seminoma subtype with an
Indolinone tyrosine kinase inhibitors block Kit activation and growth of small cell lung cancer cells.
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Six indolinone tyrosine kinase inhibitors were characterized for their ability to inhibit Kit kinase and for their effects on the growth of small cell lung cancer (SCLC) cell lines. All of the six compounds were potent inhibitors of Kit kinase in a biochemical assay. A homology model of compound
Tumor-suppressive function of protein-tyrosine phosphatase non-receptor type 23 in testicular germ cell tumors is lost upon overexpression of miR142-3p microRNA.
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Protein-tyrosine phosphatase non-receptor type 23 (PTPN23) is a candidate tumor suppressor involved in the tumorigenesis of various organs. However, its physiological role(s) and detailed expression profile(s) have not yet been elucidated. We investigated the function and regulation of PTPN23 in the
Tyrosine kinase inhibitor imatinib mesylate as anticancer agent for advanced ocular melanoma expressing immunoistochemical C-KIT (CD 117): preliminary results of a compassionate use clinical trial.
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Imatinib mesylate (IM), is a selective and competitive inhibitor of tyrosine kinases, including BCR-ABL, ABL, KIT, and the platelet-derived growth factor receptors (PDGF-R). It binds to the ATP-binding site of the target kinase and prevents the transfer of phosphate from ATP to the tyrosine residues
Potential new anticancer molecular targets for the treatment of human testicular seminomas.
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In the last years novel therapeutic approaches for the treatment of cancer have been proposed: specific inhibitors of serine/threonine and tyrosine kinases, angiogenesis inhibitors, antibodies against receptors/surface molecules on cancer cells, gene therapy approaches and others. In a lot of cases
KIT mutations are common in testicular seminomas.
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Expression of KIT tyrosine kinase is critical for normal germ cell development and is observed in the majority of seminomas. Activating mutations in KIT are common in gastrointestinal stromal tumors and mastocytosis. In this study we examined the frequency and spectrum of KIT mutations in 54
Phosphorylation of the activation loop tyrosine 823 in c-Kit is crucial for cell survival and proliferation.
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The receptor tyrosine kinase c-Kit, also known as the stem cell factor receptor, plays a key role in several developmental processes. Activating mutations in c-Kit lead to alteration of these cellular processes and have been implicated in many human cancers such as gastrointestinal stromal tumors,
The role of small molecule Kit protein-tyrosine kinase inhibitors in the treatment of neoplastic disorders.
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The Kit proto-oncogene was found as a consequence of the discovery of the feline v-kit sarcoma oncogene. Stem cell factor (SCF) is the Kit ligand and it mediates Kit dimerization and activation. The Kit receptor contains an extracellular segment that is made up of five immunoglobulin-like domains
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