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Inhibition of signal transduction by the nm23 metastasis suppressor: possible mechanisms. 2003

Massimiliano Salerno, and Taoufik Ouatas, and Diane Palmieri, and Patricia S Steeg
Women's Cancers Section, Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20892, USA. maxsal@mail.nih.gov

The first metastasis suppressor gene identified was nm23. Transfection of nm23 into metastatic cell lines resulted in the inhibition of metastasis, but not primary tumor size in vivo. Using in vitro assays, nm23 overexpression resulted in reduced anchorage-independent colonization in response to TGF-beta, reduced invasion and motility in response to multiple factors, and increased differentiation. We hypothesize that the mechanism of action of Nm23 in metastasis suppression involves diminished signal transduction downstream of a particular receptor. Candidate biochemical mechanisms are identified and discussed herein.

UI MeSH Term Description Entries
D008954 Models, Biological Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment. Biological Model,Biological Models,Model, Biological,Models, Biologic,Biologic Model,Biologic Models,Model, Biologic
D009362 Neoplasm Metastasis The transfer of a neoplasm from one organ or part of the body to another remote from the primary site. Metastase,Metastasis,Metastases, Neoplasm,Metastasis, Neoplasm,Neoplasm Metastases,Metastases
D009701 Nucleoside-Diphosphate Kinase An enzyme that is found in mitochondria and in the soluble cytoplasm of cells. It catalyzes reversible reactions of a nucleoside triphosphate, e.g., ATP, with a nucleoside diphosphate, e.g., UDP, to form ADP and UTP. Many nucleoside diphosphates can act as acceptor, while many ribo- and deoxyribonucleoside triphosphates can act as donor. EC 2.7.4.6. Deoxynucleoside Diphosphate Kinases,GDP Kinase,Nucleoside Diphosphokinases,Nucleoside-Diphosphate Kinases,Diphosphate Kinases, Deoxynucleoside,Diphosphokinases, Nucleoside,Kinase, GDP,Kinase, Nucleoside-Diphosphate,Kinases, Deoxynucleoside Diphosphate,Kinases, Nucleoside-Diphosphate,Nucleoside Diphosphate Kinase,Nucleoside Diphosphate Kinases
D011494 Protein Kinases A family of enzymes that catalyze the conversion of ATP and a protein to ADP and a phosphoprotein. Protein Kinase,Kinase, Protein,Kinases, Protein
D002454 Cell Differentiation Progressive restriction of the developmental potential and increasing specialization of function that leads to the formation of specialized cells, tissues, and organs. Differentiation, Cell,Cell Differentiations,Differentiations, Cell
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000071677 Histidine Kinase A member of the transferase superfamily of proteins. In the activated state, protein-histidine kinase autophosphorylates at a histidine residue, subsequently transferring high-energy phosphoryl groups to an aspartate residue of the response-regulator domain, which results in a conformational shift in the effector domain. Histidine kinases mediate signal transduction in a wide range of processes involving cellular adaptation to environmental stress. Histidine Protein Kinase,Histone H4 Histidine Kinase,Protein Histidine Pros-Kinase,Protein Kinase (Histidine), Pros-Kinase,Protein-Histidine Kinase,Protein-Histidine Pros-Kinase,Protein-Histidine Tele-Kinase,Sensor Histidine Kinase,Histidine Kinase, Sensor,Histidine Pros-Kinase, Protein,Kinase, Histidine,Kinase, Histidine Protein,Kinase, Protein-Histidine,Kinase, Sensor Histidine,Pros-Kinase, Protein Histidine,Pros-Kinase, Protein-Histidine,Protein Histidine Kinase,Protein Histidine Pros Kinase,Protein Histidine Tele Kinase,Protein Kinase, Histidine,Tele-Kinase, Protein-Histidine
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013329 Structure-Activity Relationship The relationship between the chemical structure of a compound and its biological or pharmacological activity. Compounds are often classed together because they have structural characteristics in common including shape, size, stereochemical arrangement, and distribution of functional groups. Relationship, Structure-Activity,Relationships, Structure-Activity,Structure Activity Relationship,Structure-Activity Relationships
D014157 Transcription Factors Endogenous substances, usually proteins, which are effective in the initiation, stimulation, or termination of the genetic transcription process. Transcription Factor,Factor, Transcription,Factors, Transcription

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