骨髓增生異常綜合征患者外周血NK細(xì)胞亞型和功能分子變化的研究
[Abstract]:Objective: To analyze the changes of natural killer (NK) cell subtypes and functional molecules in peripheral blood of patients with myelodysplastic syndrome (MDS) and their correlation with the malignant clone of bone marrow. Methods: The number of NK cells and the expression of NKp30, NKp46 and NKG2A in the peripheral blood of 35 patients with MDS from 2015 to 2016 were measured by flow cytometry, and compared with 34 normal controls, and the above-mentioned changes were compared with the percentage of the original cells of the bone marrow and the absolute value of the neutrophils in the peripheral blood. Hemoglobin amount (hb) correlation. Results: The relative number and absolute value of NK cells and CD56 ~ (dim) NK cells in the MDS group were significantly lower than that in the control group (P0.05), while the number of CD56 ~ (bright) NK cells was higher than that of the control group. It was found that the NK cell type CD56 ~ (dim) NK ratio in the MDS group was lower than that of the control group, and the difference of NK cell type CD56 ~ (dim) NK in the MDS group was statistically significant. The expression of NK cell surface activated receptor NKp30 and NKp46 in the MDS group was significantly lower than that in the control group (P0.05). In the MDS group, NK cells and CD56-(dim) NK cells were significantly lower in the high-risk group than in the low-risk group (P0.05). The number of NK cells in the MDS patients was negatively correlated with the proportion of the bone marrow (CD34 ~ +%) (r =-0.53) and positive correlation with the number of neutrophils (ANC) and hemoglobin (Hb) (r = 0.52); The number of bone marrow cells (CD34 ~ +%) was negatively correlated with the expression of NKp46 (r =-0.584) and positive correlation with the expression of NKG2A (r = 0.523). Conclusion: The number of NK cells in peripheral blood of MDS patients is insufficient, and the imbalance of subpopulation and function decrease may lead to disease progression.
【作者單位】: 天津醫(yī)科大學(xué)總醫(yī)院血液科;
【基金】:國(guó)家自然科學(xué)基金(81170472 81400088) 天津市應(yīng)用基礎(chǔ)與前沿技術(shù)研究(14JCYBJC27200、09JCYBJC11200) 天津市抗癌重大專(zhuān)項(xiàng)攻關(guān)計(jì)劃(12ZCDZSY17900)
【分類(lèi)號(hào)】:R551.3
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