Objective: To analyze the expression of stromal cell derived factor-1 (SDF-1) and its functional chemokine receptor CXCR4 in patients with acute leukemia and malignant lymphoma.
Methods: CXCR4 expressed on the membrane surface of marrow mononuclear cells was enumerated with 3-color flow cytometry. The serum level of SDF-1 was determined with ELISA assay.
Results: The expression of SDF-1 and CXCR4 in acute leukemia for ALL group, the expression of SDF-1 and CXCR4 is (7115.8 +/- 946.5) ng/L and (77.2 +/- 9.7)%; for ANLL group, the expression is (4642.2 +/- 1146.8) ng/L, (38.9 +/- 11.0)% and malignant lymphoma for HD group, the expression of SDF-1 and CXCR4 is (3728.9 +/- 690.9) ng/L and (9.2 +/- 2.7)%; for NHL group, the expression is (4442.1 +/- 1073.0) ng/L and (8.5 +/- 2.4)% patients were higher than that in controls the expression of SDF-1 and CXCR4 is (2369.3 +/- 966.5) ng/L and (2.7 +/- 1.5)% (P < 0.01). In the leukemia group, the patients with extra-marrow infiltration have higher expression of SDF-1/CXCR4 than those without and the patients; in the lymphoma group.
Conclusions: The high expression of SDF-1 and CXCR4 is somewhat correlated with the pathogenetic process and infiltration characteristics of acute leukemia and malignant lymphoma. This can provide a new method to cure the above-mentioned hematologic tumors.