title: Transcript profiling in peripheral T-cell lymphoma, not otherwise specified, and diffuse large B-cell lymphoma identifies distinct tumor profile signatures.
abstract: To glean biological differences and similarities of peripheral T-cell lymphoma-not otherwise specified [PTCL-NOS] to diffuse large B-cell lymphoma (DLBCL), a transcriptosome analysis was done on five PTCL-NOS and four DLBCL patients and validated by quantitative real-time reverse transcription-PCR on 10 selected genes. Normal peripheral blood T cells, peripheral blood B cells, and lymph node were used as controls. The resultant gene expression profile delineated distinct "tumor profile signatures" for PTCL-NOS and DLBCL. Several highly overexpressed genes in both PTCL-NOS and DLBCL involve the immune network, stroma, angiogenesis, and cell survival cascades that make important contributions to lymphomagenesis. Inflammatory chemokines and their receptors likely play a central role in these complex interrelated pathways: CCL2 and CXCR4 in PTCL-NOS and CCL5 and CCR1 in DLBCL. Highly overexpressed oncogenes unique to PTCL-NOS are SPI1, STK6, alpha-PDGFR, and SH2D1A, whereas in DLBCL they are PIM1, PIM2, LYN, BCL2A1, and RAB13. Oncogenes common to both lymphomas are MAFB, MET, NF-kappaB2, LCK, and LYN. Several tumor suppressors are also down-regulated (TPTE, MGC154, PTCH, ST5, and SUI1). This study illustrates the relevance of tumor-stroma immune trafficking and identified potential novel prognostic markers and targets for therapeutic intervention.
authors.affiliation: Department of Medicine, Arizona Cancer Center, University of Arizona, 1515 North Campbell Avenue, Tucson, AZ 85724, USA. dmahadevan@azcc.arizona.edu
authors.forename: Daruka
authors.initials: D
authors.lastname: Mahadevan
authors.forename: Catherine
authors.initials: C
authors.lastname: Spier
authors.forename: Kimiko
authors.initials: K
authors.lastname: Della Croce
authors.forename: Susan
authors.initials: S
authors.lastname: Miller
authors.forename: Benjamin
authors.initials: B
authors.lastname: George
authors.forename: Chris
authors.initials: C
authors.lastname: Riley
authors.forename: Stephen
authors.initials: S
authors.lastname: Warner
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Grogan
authors.forename: Thomas P
authors.initials: TP
authors.lastname: Miller
mesh_terms: D001483:Base Sequence; D017931:DNA Primers; D020869:Gene Expression Profiling; D006801:Humans; D007150:Immunohistochemistry; D016393:Lymphoma, B-Cell / Q000235:genetics* / Q000473:pathology; D016403:Lymphoma, Large B-Cell, Diffuse / Q000235:genetics* / Q000473:pathology; D008228:Lymphoma, Non-Hodgkin / Q000235:genetics* / Q000473:pathology; D016399:Lymphoma, T-Cell / Q000235:genetics* / Q000473:pathology; D020411:Oligonucleotide Array Sequence Analysis; D009857:Oncogenes; D012333:RNA, Messenger / Q000235:genetics*; D020133:Reverse Transcriptase Polymerase Chain Reaction
chemical_list: D017931:DNA Primers; D012333:RNA, Messenger