Abstract:
BACKGROUND:Eph receptors and their ligands, the ephrins, represent a large class of cell-cell communication molecules with well-defined developmental functions. Their role in healthy adult tissues and in human disease is still largely unknown, although diverse roles in carcinogenesis have been postulated. METHODS:We established a set of fluorescent PCR probes and primers for the definition of individual gene expression profiles of 12 different Eph receptors and 8 ephrins in 13 different healthy tissues. The mRNA expression profiles were studied in human lung, colorectal, kidney, liver, and brain cancers. RESULTS:The family of Eph receptors/ephrins was widely expressed in adult tissues with organ-site-specific patterns: EphB6 was highest in the thymus, compatible with an involvement in T-cell maturation. Brain and testis shared a unique pattern with EphA6, EphA8, and EphB1 being the most prominent. EphA7 had a high abundance in the kidney vasculature. Ephrin-A3 was up-regulated 26-fold in lung cancer, and EphB2 was up-regulated 9-fold in hepatocellular carcinoma. EphA8 was down-regulated in colon cancer, and EphA1/EphA8 was down-regulated in glioblastomas. CONCLUSION:Eph/Ephrin genes are widely expressed in all adult organs with certain organ-site-specific patterns. Because their function in adult tissues remains unknown, further analysis of their role in disease may disclose new insights beyond their well-defined meaning in development.
journal_name
Clin Chemjournal_title
Clinical chemistryauthors
Hafner C,Schmitz G,Meyer S,Bataille F,Hau P,Langmann T,Dietmaier W,Landthaler M,Vogt Tdoi
10.1373/clinchem.2003.026849subject
Has Abstractpub_date
2004-03-01 00:00:00pages
490-9issue
3eissn
0009-9147issn
1530-8561pii
clinchem.2003.026849journal_volume
50pub_type
杂志文章abstract::We describe a simple fluoroimmunoassay for the determination of thyroxine concentrations in serum. The method, "sequential addition, separation fluoroimmunoassay," involves both thyroxine labeled with fluorescein and magnetizable cellulose/iron oxide particles to which antibodies to thyroxine have been covalently link...
journal_title:Clinical chemistry
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doi:
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journal_title:Clinical chemistry
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journal_title:Clinical chemistry
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journal_title:Clinical chemistry
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journal_title:Clinical chemistry
pub_type: 杂志文章
doi:
更新日期:1976-08-01 00:00:00
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journal_title:Clinical chemistry
pub_type: 杂志文章
doi:
更新日期:1993-09-01 00:00:00
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journal_title:Clinical chemistry
pub_type: 杂志文章
doi:
更新日期:1985-03-01 00:00:00
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journal_title:Clinical chemistry
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doi:
更新日期:1979-03-01 00:00:00
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doi:
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doi:
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doi:
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journal_title:Clinical chemistry
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doi:
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doi:
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doi:
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journal_title:Clinical chemistry
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doi:
更新日期:1994-06-01 00:00:00
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journal_title:Clinical chemistry
pub_type: 杂志文章
doi:
更新日期:1987-10-01 00:00:00
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journal_title:Clinical chemistry
pub_type: 杂志文章
doi:
更新日期:2000-04-01 00:00:00
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journal_title:Clinical chemistry
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