Blimp-1 is a tumor suppressor gene in lymphoid malignancies
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B lymphocyte-induced maturation protein (Blimp-1) is a transcriptional factor, which controls the terminal differentiation of mature B cells to plasma cells. Blimp-1 is also called positive regulatory domain I-binding factor-1 (PRDI-BF1) or PR (PRDI-BF1-RIZ) domain zinc finger protein 1 (PRDM1). Furthermore, Blimp-1 is located in chromosome 6q21-22.1, a region frequently deleted in several tumors including lymphoid malignancies and has been supposed to be a candidate of tumor suppressor gene. Recently, mutational inactivation of Blimp-1 has been identified in a subset of diffuse large B-cell lymphomas of the activated B-cell type. In addition, an important role for Blimp-1 in maintaining the homeostasis of effector T cells is emerging and high expression of Blimp-1β, a splicing variant of Blimp-1, have been presumed to be associated with poor prognosis in T cell lymphoma although this aspect of the gene needs further investigation. For this reason, we focused on the tumor suppressor function of Blimp-1 on not only B but also T cell malignancies in this review.
KeywordsBlimp-1 Tumor suppressor gene Lymphoma
- 4.Buyse I M, Shao G, Huang S. The retinoblastoma protein binds to RIZ, a zinc-finger protein that shares an epitope with the adenovirus E1A protein. Proc Natl Acad Sci USA. 1995;92:4467–71.Google Scholar
- 22.Fears S, Mathieu C, Zeleznik-Le N, Huang S, Rowley J D, Nucifora G. Intergenic splicing of MDS1 and EVI1 occurs in normal tissues as well as in myeloid leukemia and produces a new member of the PR domain family. Proc Natl Acad Sci USA. 1996;93:1642–7.Google Scholar