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本文对急性白血病患者外周血LAK活性进行了研究。大多数患者外周血可诱导出LAK活性,但较正常人为低。外周血幼稚细胞比例较高和近期接受化疗的患者LAK活性明显减低。急性淋巴细胞性白血病和急性非淋巴细胞性白血病患者之LAK活性无明显区别。 相似文献
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The biomodulative and hematopoietic potentialities of IL-2 and IL-3 activatedbone marrow(ABM)cells from patients with lung adenocarcinoma were studied in vitro.Human bone marrow(BM)cells could be activated by IL-2 in culture for 7d.TheseIL-2 ABM cells had higher cytolytic activities against cells of H 7402 cell line and freshautologous adenocarcinoma cells and maintained the cytotoxicities longer than IL-2 acti-vated peripheral blood lymphocytes(APBLs),a point of possible importance in adoptiveimmunotherapy for cancer patients.The IL-2 ABM cells also had similar number ofBFU-E and CFU-GM to that had fresh BM cells if 1L-3 was added 48h alter IL-2 inculture.The IL-2 and IL-3 ABM cells might be used to eliminate tumor cells and tosupply reconstitutive elements of BM for autologous bone marrow transplantation. 相似文献
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本文观察到体外培养12h收获的胎肝细胞条件培养液(FLCM)在外源性集落刺激因子(GM-CFU)存在时,能明显促进粒-单系祖细胞(CFU-GM)的生长和提高骨髓细胞S期DNA的合成。结果提示FLCM中存在某种能与GM-CSF协同的造血刺激因子。 相似文献
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本文研究了白介素2(IL-2)和PHA诱导的LAK细胞对混杂于骨髓细胞中的U937、HL60和K562细胞的作用。将正常骨髓单个核细胞与白血病细胞按10:1比例混合,加入一定比例LAK细胞后孵育4、12小时,然后做白血病集落培养。结果显示,当LAK细胞:骨髓单个核细胞:白血病细胞为20:10:1,预孵育12小时,U937、HL60和K562集落生成分别为对照组之1.21%±2.10%,1.56%±1.65%和0.26%±0.19%。而相同条件下,骨髓CFU—c生长为对照组之87.0%±17.1%。表明在上述条件下,LAK细胞对骨髓中白血病细胞具有选择性杀伤/抑制效应。 相似文献