Abstract
Adult T-cell leukemia/lymphoma (ATLL) is an aggressive form of human leukemia/lymphoma. Although this disease is initiated by infection with human T-lymphotropic virus type 1 (HTLV-1), many HTLV-1 carriers survive for a long period without aggressive illness, suggesting that other factors may play roles in the progression of ATLL to an aggressive state. However, the mechanism involved in this progression still remains unclear. Previously, we have reported that ASY/Nogo mRNA was markedly down-regulated in human small-cell lung carcinomas, whereas it was expressed in normal tissues and other lung carcinomas, such as adenocarcinoma and squamous cell carcinoma. To understand whether or not ASY/Nogo gene is involved in the progression of ATLL, we examined the expression of ASY/Nogo mRNA in smoldering, chronic and aggressive ATLL, and found that the expression level of ASY/Nogo mRNA was markedly reduced in clinically aggressive ATLL. HTLV-1 Tax expression was not affected by the down-regulation of ASY/Nogo mRNA. These results indicate that the ASY/Nogo gene may act as a suppressor against ATLL progression, independent of Tax expression.
Original language | English |
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Pages (from-to) | 1648-1653 |
Number of pages | 6 |
Journal | International Journal of Cancer |
Volume | 119 |
Issue number | 7 |
DOIs | |
Publication status | Published - Oct 1 2006 |
Keywords
- ASY/Nogo
- ATLL
- Progression
- Tax
- mRNA in situ hybridization
ASJC Scopus subject areas
- Oncology
- Cancer Research