Activity of proximal promoter of the human β1-integrin gene was increased in Sézary syndrome
| Autor: | Malika Boukhelifa, Mireille Giner, Yolene Paulin, Christian Derappe, J. Font, Michèle Aubery |
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| Rok vydání: | 2001 |
| Předmět: |
Cancer Research
Transcription Genetic Integrin beta1 Lymphocyte Promoter Hematology Biology Molecular biology Pathogenesis medicine.anatomical_structure Oncology Cell–cell interaction Immunology Gene expression medicine Humans Sezary Syndrome RNA Messenger Northern blot Promoter Regions Genetic Keratinocyte Cell activation Cells Cultured |
| Zdroj: | Leukemia Research. 25:487-492 |
| ISSN: | 0145-2126 |
| DOI: | 10.1016/s0145-2126(00)00149-1 |
| Popis: | Changes in beta1-integrin expression have been involved in abnormal cellular interactions between malignant lymphocytes from Sézary (Sz) patients and keratinocytes. In this paper, we compare the activity of both distal and proximal promoters of the beta1-integrin gene in malignant lymphocytes from Sz patients with human normal lymphocytes. Activity of both beta1-integrin promoters was also analysed in human normal keratinocytes. Northern blot analysis shows that beta1-integrin mRNA expression is higher in malignant Sz lymphocytes than in normal lymphocytes. CAT assays show that the activity of proximal beta1-integrin promoter is markedly increased (up to 6-fold) in malignant lymphocytes from Sz patients, in comparison to normal lymphocytes. These results suggest that changes in activity of the proximal promoter of beta1-integrin subunit could be, in part, responsible for the abnormal cellular interactions between malignant lymphocytes and keratinocytes observed in Sz syndrome. |
| Databáze: | OpenAIRE |
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