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Pathway activation patterns in diffuse large B-cell lymphomas
- Source :
- Leukemia. 22:1746-1754
- Publication Year :
- 2008
- Publisher :
- Springer Science and Business Media LLC, 2008.
-
Abstract
- Deregulation of cell signaling pathways controlling cell growth and cell survival is a common feature of all cancers. Although a core repertoire of oncogenic mechanisms is widely conserved between various malignancies, the constellation of pathway activities can vary even in patients with the same malignant disease. Modern molecularly targeted cancer drugs intervene in cell signaling compensating for pathway deregulation. Hence characterizing tumors with respect to pathway activation will become crucial for treatment decisions. Here we have used semi-supervised machine learning methodology to generate signatures of eight oncogene-inducible pathways, which are conserved across epithelial and lymphoid tissues. We combined them to patterns of pathway activity called PAPs for pathway activation patterns and searched for them in 220 morphologically, immunohistochemically and genetically well-characterized mature aggressive B-cell lymphomas including 134 cases with clinical data available. Besides Burkitt lymphoma, which was characterized by a unique pattern, the PAPs identified four distinct groups of mature aggressive B-cell lymphomas across independent gene expression studies with distinct biological characteristics, genetic aberrations and prognosis. We confirmed our findings through cross-platform analysis in an independent data set of 303 mature aggressive B-cell lymphomas.
- Subjects :
- Cancer Research
medicine.medical_specialty
Biology
medicine.disease_cause
Epithelium
03 medical and health sciences
0302 clinical medicine
Internal medicine
medicine
Humans
B cell
030304 developmental biology
0303 health sciences
Hematology
Cell growth
Gene Expression Profiling
Computational Biology
medicine.disease
Immunohistochemistry
3. Good health
Lymphoma
Gene expression profiling
medicine.anatomical_structure
Oncology
030220 oncology & carcinogenesis
Immunology
Cancer research
Lymph Nodes
Lymphoma, Large B-Cell, Diffuse
Signal transduction
Databases, Nucleic Acid
Carcinogenesis
Diffuse large B-cell lymphoma
Signal Transduction
Subjects
Details
- ISSN :
- 14765551 and 08876924
- Volume :
- 22
- Database :
- OpenAIRE
- Journal :
- Leukemia
- Accession number :
- edsair.doi.dedup.....9e0aa4d5d4343715d6a6883f82ebff6a