Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:2.7.1.21 (thymidine kinase)
 7,561 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The human Me14-D12 antigen is a cell surface glycoprotein regulated by interferon-gamma (IFN-gamma) on tumor cell lines of neuroectodermal origin. It consists of two non-convalently linked subunits with apparent mol. wt sizes of 33,000 and 38,000. Here we describe the molecular cloning of a genomic probe for the Me14-D12 gene using the gene transfer approach. Mouse Ltk- cells were stably cotransfected with human genomic DNA and the Herpes Simplex virus thymidine kinase (TK) gene. Primary and secondary transfectants expressing the Me14-D12 antigen were isolated after selection in HAT medium by repeated sorting on a fluorescence activated cell sorter (FACS). A recombinant phage harboring a 14.3 kb insert of human DNA was isolated from a genomic library made from a positive secondary transfectant cell line. A specific probe derived from the phage DNA insert allowed the identification of two mRNAs of 3.5 kb and 2.2 kb in primary and secondary L cell transfectants, as well as in human melanoma cell lines expressing the Me14-D12 antigen. The regulation of Me14-D12 antigen by INF-gamma was retained in the L cell transfectants and could be detected both at the level of protein and mRNA expression.
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PMID:A novel interferon-gamma regulated human melanoma-associated antigen, gp33-38, defined by monoclonal antibody Me14-D12. II. Molecular cloning of a genomic probe. 254 4

In our previous studies, we constructed the Bifidobacterium infantis thymidine kinase/nucleoside analogue ganciclovir (BI-TK/GCV) system, which was proven to have a sustainable antitumor activity in an in vivo bladder cancer rodent model. In this article, a proteomic approach of isobaric tags for relative and absolute quantification (iTRAQ) and followed by liquid chromatography-tandem mass spectrometry was used to understand the molecular mechanisms of this system. iTRAQ identified 192 downregulated and 210 upregulated proteins after treatment with BI-TK/GCV in Sprague-Dawley rats. Downregulations of proliferating cell nuclear antigen (PCNA), pyruvate kinase isozymes M2 (PKM2), hexokinase 1 (HXK-1), 6-phosphofructokinase (PFK-B), and cell surface glycoprotein (CD146) in bladder cancer after treatment were confirmed by Western blot analysis and validated by immunohistochemistry. Furthermore, the networks of cancer proliferation associated with PCNA, glycolysis associated with PKM2, HXK-1, and PFK-B, and invasion associated with CD146 were illustrated using Ingenuity Pathway Analysis. This study represents the successful application of iTRAQ technology to reveal the molecular mechanisms of BI-TK/GCV treatment system and provides the theoretical support for the effectiveness of our successful treatment system.
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PMID:Proteomic analysis of bladder cancer by iTRAQ after Bifidobacterium infantis-mediated HSV-TK/GCV suicide gene treatment. 2389 87