肿瘤细胞治疗研究
英文原题：Comprehensive Analysis and Summary of the Value of Immunophenotypes of Mature NK Cell Tumors for Differential Diagnosis, Treatment, and Prognosis.
本研究系统刻画了成熟 NK 细胞肿瘤的 FCM 特征，强调准确免疫表型分析在该病的诊断、分型、预后判断和治疗指导中的重要性和临床价值。
背景：成熟NK细胞肿瘤的免疫表型及鉴别诊断尚缺乏全面分析和总结，而且肿瘤性与反应性NK细胞表型常有重叠。不同表型对患者预后的影响也鲜有报道。 方法：采用流式细胞术比较各组NK细胞表面及胞内标志物的表达程度，分析并总结不同疾病组各类标志物表达差异及其对预后的影响。 结果：与正常NK细胞相比，急性NK细胞白血病（ANKL）和结外NK/T细胞淋巴瘤（ENKTL）肿瘤细胞更活化、更具进展性，且前向散射光（FSC）更高；NK细胞慢性淋巴增殖性疾病（NK-CLPD）和反应性NK细胞增多症（RNKL）则不同。借助流式细胞术线索可较广泛地区分RNKL、ANKL和ENKTL。相比之下，NK-CLPD与RNKL表型差异不显著，持续存在的表型异常需要继续监测以确认恶性克隆。仅依靠KIR区分恶性与反应性NK细胞的敏感性较差。聚类结果显示，在三种NK细胞肿瘤及反应性NK细胞增生中，CD5、CD16、CD56、CD57、CD94、CD45RA、CD45RO、HLA-DR、KIR、Granzyme B、Perforin和Ki-67的表达分布不同，因此疾病分期诊断需结合多种抗体组合进行综合判断。骨髓（BM）和外周血（PB）肿瘤细胞负荷也有明确相关性。PB监测肿瘤细胞的敏感性高达87.10%，提示PB可作为BM的替代样本用于NK细胞肿瘤诊断和筛查。ENKTL患者表型与预后的分析显示，表达CD7和CD45RO者预后较差，而KIR阳性者预后较好。 结论：本研究系统描述了成熟NK细胞肿瘤的流式细胞术特征，强调准确免疫表型分析对疾病诊断、分类、预后判断和治疗指导的重要性及临床价值。
BACKGROUND: Few studies have been performed to comprehensively analyze and summarize the immunophenotype and differential diagnosis of mature NK cell tumors, and there is often overlap between tumorigenic and reactive NK cell phenotypes. Furthermore, the impact of different phenotypes on patient prognosis has rarely been reported. METHODS: The degree of expression of extracellular and intracellular markers of NK cells in each group was compared by FCM, and the differences in expression of various markers among different disease groups and their impact on prognosis have been analyzed and summarized. RESULTS: Compared with normal NK cells, tumor cells of ANKL and ENKTL had characteristics of being more activated and progressive with larger FSC, in contrast to NK-CLPD and RNKL. Differential diagnoses with RNKL, ANKL, and ENKTL have broader FCM clues. In contrast, the phenotypes of NK-CLPD and RNKL are not significantly different, and consistent phenotypic abnormalities require ongoing monitoring to confirm malignant clones. The sensitivity of differentiating malignant NK cells from reactive NK cells by KIRs alone was poor. The clustering results showed that CD5, CD16, CD56, CD57, CD94, CD45RA, CD45RO, HLA-DR, KIRs, Granzyme B, Perforin and Ki-67 were differentially distributed in the expression of three NK cell tumors and reactive NK cell hyperplasia, so a comprehensive judgment using a wide range of antibody combinations is required in disease staging diagnosis. The tumor cell loads in BM and PB were also compared, and there was a clear correlation between the two. Moreover, the sensitivity of PB for monitoring tumor cells was up to 87.10%, suggesting that PB could be used as an alternative to BM for the diagnosis and screening of NK cell tumors. Analysis of the phenotypic impact of ENKTL patients on prognosis showed that those with CD7 and CD45RO expression had a poor prognosis, while those with positive KIRs had a better prognosis. CONCLUSION: This study systematically characterized the FCM of mature NK cell tumors, emphasizing the importance and clinical value of accurate immunophenotyping in diagnosing, classifying, determining prognosis, and guiding treatment of the disease.
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