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乙醛脱氢酶在检测脐带血造血干/祖细胞中的应用
引用本文:李莉,赵英新,孟恒星,刘兰婷,何祎,李茜,韩俊领. 乙醛脱氢酶在检测脐带血造血干/祖细胞中的应用[J]. 生物医学工程与临床, 2009, 13(4): 324-327. DOI: 10.3969/j.issn.1009-7090.2009.07.013
作者姓名:李莉  赵英新  孟恒星  刘兰婷  何祎  李茜  韩俊领
作者单位:1. 协和干细胞基因工程有限公司,天津,300384;中国医学科学院,北京协和医学院血液学研究所,血液病医院,天津,300020
2. 中国医学科学院,北京协和医学院血液学研究所,血液病医院,天津,300020
3. 协和干细胞基因工程有限公司,天津,300384
摘    要:目的通过比较乙醛脱氢酶(ALDH)与CD34、CD133及粒单核细胞集落形成单位(CFU—GM)在脐带血中含量的差异.探讨ALDH作为脐带血造血干/祖细胞(HSPC)检测指标的有用性。方法采集新鲜脐带血标本28份,用荧光底物法标记ALDH,流式细胞仪检测脐带血中低侧向角高表达ALDH活性(SSC^loALDH^br)细胞、CD34^+和CD133^+含量,并进行CFU—GM的培养。结果脐带血SSC^loALDH^br细胞表达率在ALDH反应后直接上机检测组(ALDH组)及在ALDH反应后进一步标记抗体再检测组(ALDH+抗体组)分别为(O.32±0.16)%和(0.30±0.17)%,两组相比差异无统计学意义(P〉0.05)。脐带血CD34^+表达率在抗体组和ALDH+抗体组分别为(0.40±0.26)%和(0.36±0.19)%,两组比较差异无统计学意义(P〉0.05);脐带血CD133^+表达率在抗体组和ALDH+抗体组分别为(0.18±0.16)%和(0.17±0.10)%,两组比较差异无统计学意义(P〉0.05)。脐带血SSC^loALDH^br细胞表达率和CD34^+表达率、CD133^+表达率及CFU—GM产率均呈正相关(r分别为0.87、0.69和0.54.P均〈0.01)。结论ALDH反应后进一步标记抗体不影响脐带血SSC^loALDH^br细胞的检测结果,ALDH反应亦不影响进一步标记抗体的检测结果:脐带血SSC^loALDH^br细胞表达率和CD34^+表达率、CD133^+表达率及CFU—GM产率均呈正相关:ALDH活性检测可以作为检测脐带血HSPC的一个有用指标。

关 键 词:脐带血  干/祖细胞  SSC^loALDH^br细胞  CD34^+  CD133^+

The application of acetaldehyde dehydrogenase in detection of cord blood haemopoietic stem/progenitor cells
LI Li,ZHAO Ying-xin,MENG Heng-xing,LIU Lan-ting,HE Yi,LI Qian,HAN Jun-ling. The application of acetaldehyde dehydrogenase in detection of cord blood haemopoietic stem/progenitor cells[J]. Biomedical Engineering and Clinical Medicine, 2009, 13(4): 324-327. DOI: 10.3969/j.issn.1009-7090.2009.07.013
Authors:LI Li  ZHAO Ying-xin  MENG Heng-xing  LIU Lan-ting  HE Yi  LI Qian  HAN Jun-ling
Affiliation:1.Union Stem Cell & Gene Engineering Company Limited;Tianjin 300384;China;2.Institute of Hematology and Blood Disease Hospital;Peking Union Medical College;Chinese Academy of Medical Sciences;Tianjin 300020;China
Abstract:Objective To study the usefulness of acetaldehyde dehydrogenase (ALDH) activity for characterizing cord blood haemopoietic stem/progenitor cell(HSPC) quality by comparison the differences of ALDH, CD34, CD133, and the colony-forming units of granulocytes and monocytes(CFU-GM) in cord blood. Methods The samples (n = 28) of cord blood were harvested from placentas of full-term pregnancies immediately after delivery. The activity of ALDH from cord blood was detected by their fluorescent substrates. The express...
Keywords:CD34+  CD133+
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