We aim to study the expression pattern of CD30, CD40 and CD95 in classical Hodgkin's lymphoma (cHL) and to correlate the expressions with proliferation and apoptosis in the Hodgkin/Reed-Sternberg (H/RS) cells of cHL with or without associated Epstein-Barr virus (EBV) infection.
NPM-ALK characterizes anaplastic large cell lymphoma (ALCL), as does the high expression of CD30, a feature shared with H-RS cells of classic Hodgkin's lymphoma.
Using the SSH technique, we compared the transcriptome of 2 cases of ALK+ and ALK- anaplastic large cell lymphoma (ALCL) and of 2 cases of classical Hodgkin's lymphoma (cHL) with opposite behavior.
IL-4 and IL-13 transcripts were absent in PMBL cell lines and expressed at low levels in tumors, indicating that, contrary to classical Hodgkin lymphoma (cHL), STAT6 activation is not due to an autocrine IL-4/IL-13 secretion.
It has previously been demonstrated that in cultured and in situ tumour cells of classical Hodgkin lymphoma (cHL), the immunoglobulin (Ig) promoter is inactive and its transcription factors Oct2 and/or BOB.1/OBF.1 are down-regulated.
Our findings highlight phosphorylated STAT6 as a characteristic distinguishing PMBL from DLBCL, but a common feature to PMBL and cHL, supporting the hypothesis of common pathogenic events in these 2 lymphomas.
It has previously been demonstrated that in cultured and in situ tumour cells of classical Hodgkin lymphoma (cHL), the immunoglobulin (Ig) promoter is inactive and its transcription factors Oct2 and/or BOB.1/OBF.1 are down-regulated.
IL-4 and IL-13 transcripts were absent in PMBL cell lines and expressed at low levels in tumors, indicating that, contrary to classical Hodgkin lymphoma (cHL), STAT6 activation is not due to an autocrine IL-4/IL-13 secretion.
We used real-time quantitative polymerase chain reaction (RQ-PCR) to investigate mRNA expression for interleukin (IL)-1alpha, IL-1beta, IL-2, IL-4, IL-5, IL-8, IL-12p35, IL-12p40, IL-13, IL-15, interferon (IFN)-gamma and tumor necrosis factor (TNF-alpha) in lymph node tissue from 15 patients with classic Hodgkin's lymphoma (c-HL) and one with lymphocyte predominance (LP) HL.
Strong cytoplasmic staining was seen in 7 of 13 c-FLIP-positive classic Hodgkin lymphoma cases, in contrast with only 2 of 6 c-FLIP-positive nodular lymphocyte-predominant Hodgkin lymphoma cases.
Several of the differentially expressed genes may play a role in the pathogenesis of cHL because they represent potential oncogenes, such as rhoC, L-myc, and PTP4A, or transcription factors, such as ATF-5, ATBF1, and p21SNFT.
We used real-time quantitative polymerase chain reaction (RQ-PCR) to investigate mRNA expression for interleukin (IL)-1alpha, IL-1beta, IL-2, IL-4, IL-5, IL-8, IL-12p35, IL-12p40, IL-13, IL-15, interferon (IFN)-gamma and tumor necrosis factor (TNF-alpha) in lymph node tissue from 15 patients with classic Hodgkin's lymphoma (c-HL) and one with lymphocyte predominance (LP) HL.
Thus, GATA-2 expression was found specifically in HRS cells of cHL, suggesting that GATA-2 is important in establishing the abnormal B-cell phenotype of HRS cells.
Several of the differentially expressed genes may play a role in the pathogenesis of cHL because they represent potential oncogenes, such as rhoC, L-myc, and PTP4A, or transcription factors, such as ATF-5, ATBF1, and p21SNFT.
Several of the differentially expressed genes may play a role in the pathogenesis of cHL because they represent potential oncogenes, such as rhoC, L-myc, and PTP4A, or transcription factors, such as ATF-5, ATBF1, and p21SNFT.
B-cell transcription factor expression in the gray zone cases more closely resembled MLBCL than cHL with expression of Pax5, Oct2, and BOB.1 in all but 1 case studied (14 of 15).
Two cases of sequential lymphoma showed rearrangements of the IgH gene of identical size: one in which MLBCL was the first diagnosis and one in which MLBCL was diagnosed at relapse, indicating clonal identity for the two components of cHL and MLBCL.