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Genes associated with the tumour microenvironment are differentially expressed in cured versus primary chemotherapy-refractory diffuse large B-cell lymphoma
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2008 (engelsk)Inngår i: British Journal of Haematology, ISSN 0007-1048, E-ISSN 1365-2141, Vol. 141, nr 4, s. 423-432Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In order to identify genes associated with primary chemotherapy-resistance, gene expression profiles (GEP) in tumour tissue from 37 patients with de novo diffuse large B-cell lymphoma (DLBCL), stage II-IV, either in continuous complete remission (n = 24) or with progressive disease during primary treatment (n = 13), were examined using spotted 55K oligonucleotide arrays. Immunohistochemistry was used for confirmation at the protein level. The top 86 genes that best discriminated between the two cohorts were chosen for further analysis. Only seven of 86 genes were overexpressed in the refractory cohort, e.g. RABGGTB and POLE, both potential targets for drug intervention. Seventy-nine of 86 genes were overexpressed in the cured cohort and mainly coded for proteins expressed in the tumour microenvironment, many of them involved in proteolytic activity and remodelling of extra cellular matrix. Furthermore, major histocompatibility complex class I molecules, CD3D and ICAM1 were overexpressed, indicating an enhanced immunological reaction. Immunohistochemistry confirmed the GEP results. The frequency of tumour infiltrating lymphocytes, macrophages, and reactive cells expressing ICAM-1, lysozyme, cathepsin D, urokinase plasminogen activator receptor, signal transducer and activator of transcription 1, and galectin-3 was higher in the cured cohort. These findings indicate that a reactive microenvironment has an impact on the outcome of chemotherapy in DLBCL.

sted, utgiver, år, opplag, sider
Wiley-Blackwell, 2008. Vol. 141, nr 4, s. 423-432
Emneord [en]
Diffuse large B-cell lymphoma, gene expression, chemotherapy, microenvironment
HSV kategori
Identifikatorer
URN: urn:nbn:se:umu:diva-9544DOI: 10.1111/j.1365-2141.2008.07037.xPubMedID: 18419622OAI: oai:DiVA.org:umu-9544DiVA, id: diva2:149215
Tilgjengelig fra: 2008-04-22 Laget: 2008-04-22 Sist oppdatert: 2019-08-07bibliografisk kontrollert

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