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人参皂甙对K562细胞表面分化抗原及造血生长因子受体表达的影响 被引量:1
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作者 陈婷梅 王亚平 陈地龙 《重庆医科大学学报》 CAS CSCD 2003年第5期568-570,共3页
目的 :进一步探讨人参皂甙 (TSPG)诱导K5 6 2细胞分化的作用机制及了解K5 6 2细胞的生物学特点 ,为开发TSPG临床应用提供理论与实验依据。方法 :采用形态学观察和流式细胞术等方法 ,研究TSPG在诱导K5 6 2细胞向较为成熟细胞分化过程中 ... 目的 :进一步探讨人参皂甙 (TSPG)诱导K5 6 2细胞分化的作用机制及了解K5 6 2细胞的生物学特点 ,为开发TSPG临床应用提供理论与实验依据。方法 :采用形态学观察和流式细胞术等方法 ,研究TSPG在诱导K5 6 2细胞向较为成熟细胞分化过程中 ,对其表面分化抗原及造血生长因子受体表达的影响。结果 :TSPG可诱导K5 6 2细胞向较成熟的红系、粒系细胞分化 ,作用后细胞表达CD15、HIR2 、EPO -R和GM -CSF -R的阳性细胞率均有所升高。结论 :K5 6 2细胞为分化受阻滞的异常造血祖细胞 ,其生物学特点与正常人多向造血祖细胞 (CFU -Mix)相似 ;TSPG诱导K5 6 2细胞成熟分化的作用机理可能与TSPG促进K5 6 2细胞EPO -R、GM -CSF -R表达升高有关。 展开更多
关键词 人参总皂甙 K562 CD15 HIR2 EPO受体 gm—csf受体
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Analysis of the GM-CSF and GM-CSF/IL-3/IL-5 receptor common beta chain in a patient with pulmonary alveolar proteinosis
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作者 王选锭 刘富光 Burkhard Bewig 《Chinese Medical Journal》 SCIE CAS CSCD 2002年第1期76-80,149,共5页
Objective To investigate the expression of the granulocyte-macrophage colony-stimulating factor (GM-CSF) and GM-CSF/IL-3/IL-5 receptor common beta chain (βc receptor) in an adult patient with idiopathic pulmonary al... Objective To investigate the expression of the granulocyte-macrophage colony-stimulating factor (GM-CSF) and GM-CSF/IL-3/IL-5 receptor common beta chain (βc receptor) in an adult patient with idiopathic pulmonary alveolar proteinosis (PAP), so as to demonstrate the possible association of the GM-CSF and βc receptor with the pathogenesis of human PAP.Methods The GM-CSF levels were measured with a commercial ELISA kit (sensitivity 5?pg/ml) and the βc receptor expression on the cell surface was detected by flow cytometry analysis. Reverse transcription-polymerase chain reaction (RT-PCR) analysis was employed to detect the expression of the GM-CSF mRNA and the βc receptor mRNA in peripheral blood mononuclear cells and alveolar macrophages. The entire coding regions of the GM-CSF cDNA and the βc receptor cDNA were sequenced by the Sanger dideoxy-mediated chain termination method to detect possible mutations.Results The patient with PAP failed to release the GM-CSF protein either from circulating mononuclear cells or from alveolar macrophages. The expression of the GM-CSF mRNA was normal after the stimulation of lipopolysaccharide, whereas a point mutation at position 382 of the GM-CSF cDNA from 'T' to 'C' was revealed by cDNA sequencing, which caused a change in amino acid 117 of the protein from isoleucine to threonine. The βc receptor expression on the cell surface was normal, and the βc receptor mRNA expression and the sequence of the entire coding region of the βc receptor were also normal.Conclusions The decreased GM-CSF production is associated with the pathogenesis of human PAP. A point mutation of the GM-CSF cDNA may contribute to the decreased GM-CSF production in our adult PAP patient. The mutation of the βc receptor in some of paediatric patients with PAP may not be a common problem in adult patients. 展开更多
关键词 pulmonary alveolar proteinosis · granulocyte-macrophage colony-stimulating factor (gm-csf) · gm-csf/IL-3/IL-5 receptor common beta chain · mutation
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