Gene expression profiling indicates that immunohistochemical expression of CD40 is a marker of an inflammatory reaction in the tumor stroma of diffuse large B-cell lymphoma
Research output: Contribution to journal › Article
Immunohistochemical expression of CD40 is seen in 60-70% of diffuse large B-cell lymphoma (DLBCL) and is associated with a superior prognosis. By using gene expression profiling we aimed to further explore the underlying mechanisms for this effect. Ninety-eight immunohistochemically defined CD40 positive or negative DLBCL tumors, 63 and 35 respectively, were examined using spotted 55K oligonucleotide arrays. CD40 expressing tumors were characterized by up-regulated expression of genes encoding proteins involved in cell-matrix interactions: collagens, integrin a V, proteoglycans and proteolytic enzymes, and antigen presentation. Immunohistochemistry confirmed that CD40 positive tumors co-express the proinflammatory proteoglycan biglycan (p = 0.005), which in turn correlates with the amount of infiltrating macrophages and CD4 and CD8 positive T-cells. We postulate that immunohistochemical expression of CD40 mainly reflects the inflammatory status in tumors. A high intratumoral inflammatory reaction may correlate with an increased autologous tumor response, and thereby a better prognosis.
|Research areas and keywords||
Subject classification (UKÄ) – MANDATORY
|Journal||Leukemia & Lymphoma|
|Publication status||Published - 2012|
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Computational biology and biological physics (000006113), Pathology, (Lund) (013030000), Oncology, MV (013035000)
Related research output
2015, Department of Clinical Sciences, Lund University. 113 p.
Research output: Thesis › Doctoral Thesis (compilation)