NF-κB and MicroRNA Deregulation Mediated by HTLV-1 Tax and HBZ

Stefania Fochi, Vincenzo Ciminale, Elisabetta Trabetti, Umberto Bertazzoni, Donna M D'Agostino, Donato Zipeto, Maria Grazia Romanelli

Research output: Contribution to journalReview articlepeer-review


The risk of developing adult T-cell leukemia/lymphoma (ATLL) in individuals infected with human T-cell lymphotropic virus 1 (HTLV-1) is about 3-5%. The mechanisms by which the virus triggers this aggressive cancer are still an area of intensive investigation. The viral protein Tax-1, together with additional regulatory proteins, in particular HTLV-1 basic leucine zipper factor (HBZ), are recognized as relevant viral factors required for both viral replication and transformation of infected cells. Tax-1 deregulates several cellular pathways affecting the cell cycle, survival, and proliferation. The effects of Tax-1 on the NF-κB pathway have been thoroughly studied. Recent studies also revealed the impact of Tax-1 and HBZ on microRNA expression. In this review, we summarize the recent progress in understanding the contribution of HTLV-1 Tax- and HBZ-mediated deregulation of NF-κB and the microRNA regulatory network to HTLV-1 pathogenesis.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
Issue number4
Publication statusPublished - Dec 10 2019


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