Abstract
To investigate the correlation of C-MYC protein with MDSC, Th17 cells and the pathogenesis of myeloma in different clinical stages. A total of 65 patients with multiple myeloma treated in our hospital were selected as MM group, and 30 healthy subjects were selected as control group. The positive expression rate of C-MYC protein in bone marrow tissue, and the ratios of peripheral blood MDSC and Th17 cells were compared among the two groups, and the correlation of C-MYC protein, the ratio of MDSC, Th17 cells with onset of myeloma at different clinical stages, the relationship of the expression of C-MYC protein with the ratio of MDSC/Th17 cells and the clinical parameters of MM was analyzed. Also, the diagnostic value of single diagnosis and combined diagnosis was compared. The positive expression rate of C-MYC protein in bone marrow, the ratio of MDSC and Th17 cells in peripheral blood in MM group were significantly higher than those in normal control group(P<0.05); the positive expression rate of C-MYC protein, MDSC and Th17 cells in patients at ISS stage Ⅰ, Ⅱ and Ⅲ MM showed an increasing trend (r=0.432, r=0.401, r=0.351); the correlation between the ratio of MDSC, Th17 cells and the positive expression rate of C-MYC protein in MM patients was positive (r=0.415, r=0.417); the area under ROC curve (AUC) of combined diagnosis was significantly larger than that of single index diagnosis (C-MYC protein, MDSC cells, Th17 cells)(P<0.05). There was no correlation between the expression of C-MYC protein, the proportion of MDSC, Th17 cells and sex or age in MM patients (P>0.05). The positive expression rate of C-MYC protein and the proportion of MDSC and Th17 cells in MM patients significantly increase, which positively correlates with clinical ISS stagin.
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