burkitt lymphoma/phosphatase

Burkitt lymphoma (BL) is the most common histological subtype of non-Hodgkin lymphoma (NHL) in children and adolescents. Through the introduction of short intensive multi-agent chemoimmunotherapy, survival has improved significantly over the past 30 years. However, this successful approach is

Precursor T-cell acute lymphoblastic leukaemia (T-ALL)/lymphoma (T-LBL) is a neoplasm with cytological features that include blast cells of medium size, high nuclear cytoplasmic ratio and inconspicuous nucleoli, which are usually TdT (Terminal Deoxynucleotidyl Transferase) positive and variably

A 12-year-old boy admitted to a local hospital with fever, migratory arthralgia, and periosteal reaction on X Ray. He was transferred to our hospital because magnetic resonance imaging scan of his whole body showed multiple abnormal signals in bones. Laboratory findings on admission showed the

Alkaline phosphatase [orthophosphoricmonoester phosphohydrolase (alkaline pH optimum), EC 3.1.3.1] purified from a Burkitt lymphoma cell line (Daudi) and Moloney-virus-induced murine leukemia (YAC) showed unique catalytic properties in substrate specificity and inhibition by cysteamine-S-phosphate.

We wish to identify developmental changes in germinal center B cells that may contribute to their rapid growth. SHP-1 is an SH2 domain-containing phosphotyrosine phosphatase that negatively regulates activation of B cells and other cells of hematopoietic lineages. We have found that in all 13

CDC25B2, a protein tyrosine phosphatase closely related to the putative CDC25B oncogene, was identified in a Burkitt lymphoma cDNA library. CDC25B2 differs from CDC25B by a 14 residue insertion and a 41 residue deletion, which are both located in the amino-terminal region of the protein, upstream of

The main purpose of the present study was to elucidate the role of sperm‑associated antigen 6 (SPAG6) in the occurrence and development of Burkitt lymphoma (BL) and explore the underlying molecular mechanisms. A correlation was observed between the expression of SPAG6 and the prognosis of patients

Hexamethylenbisacetamide (HMBA) can induce the Burkitt lymphoma Raji cells to enter the differentiation process as evidenced by the decrease of HLA-DR antigens. This event is preceded by a decrease of c-myc expression and of the phosphorylation of cellular proteins, due to either a decrease of

Co-clustering B cell receptors (BCR) and type II receptors binding the Fc part of IgG (Fc gamma RIIb) inhibits B cell activation and antibody production. Tyrosine phosphorylation of an intracellular motif of Fc gamma RIIb has been shown to be a prerequisite of the inhibition. After being

B-cell antigen receptor (BCR)-mediated calcium response can be blocked by phenylarsine oxide (PAO), a dithiol group-reactive protein tyrosine phosphatase inhibitor. We have examined the mechanism of this inhibition in BL41 Burkitt lymphoma cells. PAO-dependent inhibition is not restricted to the

Protein kinase C activators and microtubule-damaging drugs stimulate BCL2 phosphorylation, which has been associated with either enhancement or inhibition of cell viability. In a Burkitt lymphoma cell line, both types of agents likewise stimulated phosphorylation of myeloid cell leukemia 1 (MCL1),

It has been well established that Galectin-1 (GAL1), a beta-galactoside-binding protein, regulates the viability of lymphoid cells. However, the signaling pathway governed by the binding of GAL1 to the cell membrane is not understood. As a first step towards the elucidation of GAL1-initiated

Burkitt lymphoma is a germinal center B-cell-derived cancer that was instrumental in the identification of MYC as an important human oncogene more than three decades ago. Recently, new genomics technologies have uncovered several additional oncogenic mechanisms that cooperate with MYC to create this

The tumor suppressor protein phosphatase 2A (PP2A) is a serine/threonine phosphatase whose activity is inhibited in most human cancers. One of the best characterized PP2A substrates is MYC proto-oncogene BHLH transcription factor (MYC), whose overexpression is commonly associated with aggressive

Abundant, sustained expression of prosurvival Mcl-1 is an important determinant of viability and drug resistance in cancer cells. The Mcl-1 protein contains PEST sequences (enriched in proline, glutamic acid, serine, and threonine) and is normally subject to rapid turnover via multiple different