Expression of SDF1 receptors in the patients with Hodgkin lymphoma

Hodgkin lymphoma is a type of immune system malignancies, constituting about 30% of all cases of lymphomas. It is divided into four subgroups based on histopathologic findings. Recent reports indicate that SDF1 chemokine plays a major role in the development, survival and metastasis of many cancers, including breast, prostate and pancreas. So far, its expression and especially receptors namely CXCR4 and RDC1 has not been investigated in Hodgkin lymphoma. Therefore, in this study for the first time, SDF1 receptors expression was analyzed in the patients with Hodgkin lymphoma. In this study, the slides were obtained from the biopsies of 40 patients with Hodgkin lymphoma. The availability of SDF1 receptors were examined using immunohistochemistry. Also, the association between these molecules with subgroup of disease was assessed by comparing the immunohistochemical findings in the expression of CXCR4 and RDC1 with the clinical data. Both SDF1 receptors are expressed on the surface of Hodgkin and Reed-Sternberg cells. CXCR4 is expressed not only on the surface of Hodgkin and Reed-Sternberg cells but also on the normal and reactive cells surrounding the tumoral cells. But RDC1 is expressed only on the surface and within the cytoplasm of tumoral cells. The results of this study showed that RDC1 could be a marker for diagnosis of Hodgkin lymphoma. However, further studies using larger sample sizes and more accurate techniques are needed to confirm these results.