title: Gene expression profiling identifies emerging oncogenic pathways operating in extranodal NK/T-cell lymphoma, nasal type.
abstract: Biopsies and cell lines of natural killer/T-cell lymphoma, nasal type (NKTCL) were subject to combined gene expression profiling and array-based comparative genomic hybridization analyses. Compared with peripheral T-cell lymphoma, not otherwise specified, NKTCL had greater transcript levels for NK-cell and cytotoxic molecules, especially granzyme H. Compared with normal NKcells, tumors were closer to activated than resting cells and overexpressed several genes related to vascular biology, Epstein-Barr Virus-induced genes, and PDGFRA. Notably, platelet-derived growth factor receptor alpha and its phosphorylated form were confirmed at the protein level, and in vitro the MEC04 NKTCL cell line was sensitive to imatinib. Deregulation of the AKT, Janus kinase-signal transducers and activators of transcription, and nuclear factor-kappaB pathways was corroborated by nuclear expression of phosphorylated AKT, signal transducers and activators of transcription 3, and RelA in NKTCL, and several deregulated genes in these pathways mapped to regions of recurrent copy number aberrations (AKT3 [1q44], IL6R [1q21.3], CCL2 [17q12], TNFRSF21 [6p12.3]). Several features of NKTCL uncovered by this analysis suggest perturbation of angiogenic pathways. Integrative analysis also evidenced deregulation of the tumor suppressor HACE1 in the frequently deleted 6q21 region. This study highlights emerging oncogenic pathways in NKTCL and identifies novel diagnostic and therapeutic targets.
authors: Inserm U955, Créteil, France.
authors: Yenlin
authors: Y
authors: Huang
authors: Aurélien
authors: A
authors: de Reyniès
authors: Laurence
authors: L
authors: de Leval
authors: Bouchra
authors: B
authors: Ghazi
authors: Nadine
authors: N
authors: Martin-Garcia
authors: Marion
authors: M
authors: Travert
authors: Jacques
authors: J
authors: Bosq
authors: Josette
authors: J
authors: Brière
authors: Barbara
authors: B
authors: Petit
authors: Emilie
authors: E
authors: Thomas
authors: Paul
authors: P
authors: Coppo
authors: Teresa
authors: T
authors: Marafioti
authors: Jean-François
authors: JF
authors: Emile
authors: Marie-Hélène
authors: MH
authors: Delfau-Larue
authors: Christian
authors: C
authors: Schmitt
authors: Philippe
authors: P
authors: Gaulard
mesh_terms: D000328:Adult; D000368:Aged; D014408:Biomarkers, Tumor / Q000235:genetics / Q000378:metabolism; D015153:Blotting, Western; D049109:Cell Proliferation; D002478:Cells, Cultured; D055028:Comparative Genomic Hybridization; D020031:Epstein-Barr Virus Infections / Q000235:genetics* / Q000378:metabolism / Q000821:virology; D005260:Female; D020869:Gene Expression Profiling; D004854:Herpesvirus 4, Human / Q000502:physiology; D006801:Humans; D007124:Immunoenzyme Techniques; D007694:Killer Cells, Natural / Q000473:pathology* / Q000821:virology; D054391:Lymphoma, Extranodal NK-T-Cell / Q000235:genetics* / Q000378:metabolism / Q000821:virology; D008297:Male; D008875:Middle Aged; D009297:Nasal Mucosa / Q000378:metabolism / Q000473:pathology; D009303:Nasopharyngeal Neoplasms / Q000235:genetics* / Q000378:metabolism / Q000821:virology; D020411:Oligonucleotide Array Sequence Analysis; D009857:Oncogenes / Q000502:physiology*; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D017479:Receptors, Platelet-Derived Growth Factor / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D015398:Signal Transduction; D044767:Ubiquitin-Protein Ligases / Q000235:genetics / Q000378:metabolism
chemical_list: D014408:Biomarkers, Tumor; D012333:RNA, Messenger; C497506:HACE1 protein, human; D044767:Ubiquitin-Protein Ligases; D017479:Receptors, Platelet-Derived Growth Factor