RGD Reference Report - Intracellular tumor necrosis factor production by T- and B-cells in B-cell chronic lymphocytic leukemia. - Rat Genome Database

Send us a Message
Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   
Search RGD Grant Resources Citing RGD About Us Contact Us
Genes Variants Community Projects QTLs Strains Markers Genome Information Ontologies Cell Lines References Download Submit Data
OntoMate (Literature Search) JBrowse (Genome Browser) Synteny Browser (VCMap) Variant Visualizer Multi-Ontology Enrichment (MOET) Gene-Ortholog Location Finder (GOLF) InterViewer (Protein-Protein Interactions) PhenoMiner (Quatitative Phenotypes) Gene Annotator OLGA (Gene List Generator) AllianceMine GViewer (Genome Viewer)
Aging & Age-Related Disease Cancer & Neoplastic Disease Cardiovascular Disease Coronavirus Disease Developmental Disease Diabetes Hematologic Disease Immune & Inflammatory Disease Infectious Disease Liver Disease Neurological Disease Obesity & Metabolic Syndrome Renal Disease Respiratory Disease Sensory Organ Disease
Find Models   new Genetic Models Autism Models Rat PhenoMiner (Quantitative Phenotypes) Chinchilla PhenoMiner Expected Ranges (Quantitative Phenotype) PhenoMiner Term Comparison Hybrid Rat Diversity Panel Phenotypes Phenotypes in Other Animal Models Animal Husbandry Strain Medical Records Phylogenetics Strain Availability Calendar Rats 101 Submissions Photo Archive
Pathways
Rat Community Forum Directory of Rat Laboratories Video Tutorials News RGD Publications RGD Presentations Archive Nomenclature Guidelines Resource Links Laboratory Resources Employment Resources

Intracellular tumor necrosis factor production by T- and B-cells in B-cell chronic lymphocytic leukemia.

Authors: Bojarska-Junak, A  Rolinski, J  Wasik-Szczepaneko, E  Kaluzny, Z  Dmoszynska, A 
Citation: Bojarska-Junak A, etal., Haematologica. 2002 May;87(5):490-9.
RGD ID: 10449463
Pubmed: PMID:12010662   (View Abstract at PubMed)

BACKGROUND AND OBJECTIVES: The pathogenesis of B-cell chronic lymphocytic leukemia (B-CLL) has been linked with the production and activity of certain growth factors. Tumor necrosis factor (TNF-alpha) is important for the growth and survival of B-CLL cells. TNF-alpha promotes the proliferation of the malignant cell clone and is believed to play a role in the progression of B-CLL. The aim of our study was to examine the level of production and intracellular expression of TNF-alpha by T- and B-cells in B-CLL in correlation with stage of disease and clinical parameters. DESIGN AND METHODS: Using a three-color flow cytometry technique we analyzed intracellular TNF-alpha expression by B-cells (CD19+) and by T-cell subsets (CD3+/CD4+ and CD3+/CD8+) in peripheral blood (PB) and bone marrow (BM) from 40 patients with B-CLL and 24 healthy controls. RESULTS: A higher number of TNF-a-positive B-cells were found in PB and BM in B-CLL patients than in normal controls. In BM this difference was statistically significant (p<0.007). Likewise, in PB and BM the percentage of T-cells expressing TNF-alpha was significantly higher in B-CLL patients than in normal controls (PB: p<0.00001; BM: p<0.007). CD3+/CD4+ cells from patients displayed a lower level of intracellular TNF-alpha expression than did CD3+/CD8+ cells (PB: p<0.0001; BM: p<0.04). The number of T-cells expressing TNF-alpha in B-CLL patients was higher in those with stages III-IV than in patients with early stage disease (PB: p<0.007; BM: p<0.01). Additionally, PB and BM T-cell subsets from patients in stages III-IV had a statistically significant higher level of cytoplasmic TNF-a expression than the corresponding cells from healthy controls (PB: p<0.02; BM: p<0.05). In PB the percentage of CD4+ and CD8+ T-cells expressing cytoplasmic TNF-alpha positively correlated with the stage of disease, total tumor mass (TTM) score and lymphocytosis. In BM only the percentage of CD8 T-cells positively correlated with TTM score and lymphocytosis. The expression of TNF-alpha in leukemic B-cells did not correlate with any progression parameters of disease. INTERPRETATION AND CONCLUSIONS: The results obtained suggest that malignant B-cells are exposed to large numbers of T-cells able to synthesize and secrete TNF-alpha. Moreover, T-cells even though fewer than B-cells may be an important source of TNF-a in advanced stages of disease. This indicates that the TNF-alpha can be associated with progression of B-CLL and may be implicated in some side-effects associated with this disease.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
B-Cell Chronic Lymphocytic Leukemia disease_progressionIEP 10449463protein:increased expression:bone marrow more ...RGD 
B-Cell Chronic Lymphocytic Leukemia disease_progressionISOTNF (Homo sapiens)10449463; 10449463protein:increased expression:bone marrow more ...RGD 

Objects Annotated

Genes (Rattus norvegicus)
Tnf  (tumor necrosis factor)

Genes (Mus musculus)
Tnf  (tumor necrosis factor)

Genes (Homo sapiens)
TNF  (tumor necrosis factor)


Additional Information