Differential Chemokine Expression in Tissues Involved by Hodgkin’s Disease: Direct Correlation of Eotaxin Expression and Tissue Eosinophilia

Author:

Teruya-Feldstein Julie1,Jaffe Elaine S.1,Burd Parris R.1,Kingma Douglas W.1,Setsuda Joyce E.1,Tosato Giovanna1

Affiliation:

1. From the Laboratory of Pathology, Hematopathology Section, National Cancer Institute, National Institutes of Health, Bethesda; and the Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, MD.

Abstract

Abstract Hodgkin’s disease (HD) is a lymphoid malignancy characterized by infrequent malignant cells surrounded by abundant inflammatory cells. In this study, we examined the potential contribution of chemokines to inflammatory cell recruitment in different subtypes of HD. Chemokines are small proteins that are active as chemoattractants and regulators of cell activation. We found that HD tissues generally express higher levels of interferon-γ–inducible protein-10 (IP-10), Mig, RANTES, macrophage inflammatory protein-1 (MIP-1), and eotaxin, but not macrophage-derived chemotactic factor (MDC), than tissues from lymphoid hyperplasia (LH). Within HD subtypes, expression of IP-10 and Mig was highest in the mixed cellularity (MC) subtype, whereas expression of eotaxin and MDC was highest in the nodular sclerosis (NS) subtype. A significant direct correlation was detected between evidence of Epstein-Barr virus (EBV) infection in the neoplastic cells and levels of expression of IP-10, RANTES, and MIP-1. Levels of eotaxin expression correlated directly with the extent of tissue eosinophilia. By immunohistochemistry, IP-10, Mig, and eotaxin proteins localized in the malignant Reed-Sternberg (RS) cells and their variants, and to some surrounding inflammatory cells. Eotaxin was also detected in fibroblasts and smooth muscle cells of vessels. These results provide evidence of high level chemokine expression in HD tissues and suggest that chemokines may play an important role in the recruitment of inflammatory cell infiltrates into tissues involved by HD.

Publisher

American Society of Hematology

Subject

Cell Biology,Hematology,Immunology,Biochemistry

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