A RECEPTOR TYROSINE KINASE SPECIFIC TO HEMATOPOIETIC STEM AND PROGENITOR CELL-ENRICHED POPULATIONS

被引:553
|
作者
MATTHEWS, W [1 ]
JORDAN, CT [1 ]
WIEGAND, GW [1 ]
PARDOLL, D [1 ]
LEMISCHKA, IR [1 ]
机构
[1] JOHNS HOPKINS UNIV, DEPT MED, BALTIMORE, MD 21205 USA
关键词
D O I
10.1016/0092-8674(91)90010-V
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
To elucidate the molecular biology of the hematopoietic stem cell, we have begun to isolate genes from murine cell populations enriched in stem cell activity. One such cDNA encodes a novel receptor tyrosine kinase, designated fetal liver kinase-2 or flk-2, which is related to the W locus gene product c-kit. Expression analyses suggest an extremely restricted distribution of flk-2. It is expressed in populations enriched for stem cells and primitive uncommitted progenitors, and is absent in populations containing more mature cells. Therefore, this receptor may be a key signal transducing component in the totipotent hematopoietic stem cell and its immediate self-renewing progeny.
引用
收藏
页码:1143 / 1152
页数:10
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