Abstract:
:The elongation factor 1A proteins (eEF1A1/A2) are known to play a role in tumours. We previously found that a more basic isoform of eEF1A (MBI-eEF1A) is present in the cytoskeletal/nuclear-enriched extracts of CCRF-CEM T-lymphoblasts but not in those of normal lymphocytes. To obtain deeper knowledge about MBI-eEF1A biology, we investigate from which of the eEF1A proteins, eEF1A1 or eEF1A2, MBI-eEF1A originates and the possibility that its appearance can be modulated by the differentiated or proliferative cell status. CCRF-CEM T-lymphoblasts and normal lymphocytes were cultured with or without differentiation/pro-proliferative stimuli (Phorbol 12-Myristate 13-Acetate (PMA) alone or the combination of phytohaemagglutinin (PHA) with PMA, respectively), and the presence of MBI-eEF1A evaluated together with that of the eEF1A1/A2 mRNAs. Our data indicate that the MBI-eEF1A may derive from eEF1A1 as eEF1A2 is not expressed in CCRF-CEM and normal lymphocytes. Moreover, MBI-eEF1A is inducible in normal lymphocytes upon hyper-proliferative stimuli application; in CCRF-CEM, its presence can be abrogated by PMA-induced differentiation. Finally, MBI-eEF1A may have a functional role in hyper-proliferating/tumour cells as its disappearance reduces the growth of CCRF-CEM and that of PHA/PMA-stimulated lymphocytes. The presented data suggest that MBI-eEF1A may be related to oncogenic cell phenotype, rising the possibility to use MBI-eEF1A as target for novel therapeutic strategies.
journal_name
Hematol Oncoljournal_title
Hematological oncologyauthors
Scaggiante B,Dapas B,Pozzato G,Grassi Gdoi
10.1002/hon.2022subject
Has Abstractpub_date
2013-06-01 00:00:00pages
110-6issue
2eissn
0278-0232issn
1099-1069journal_volume
31pub_type
杂志文章abstract::Diffuse large B-cell lymphoma (DLBCL) is the most common type of lymphoma. The standard therapy for DLBCL is R-CHOP. The current 5-year overall survival is 60% to 70% using standard frontline therapy. However, the use of doxorubicin and its cardiotoxicity is a major clinical problem and preexisting cardiac disease may...
journal_title:Hematological oncology
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journal_title:Hematological oncology
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pub_type: 杂志文章,meta分析,评审
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