Ptk7-Deficient Mice Have Decreased Hematopoietic Stem Cell Pools as a Result of Deregulated Proliferation and Migration

被引：21

作者：

Lhoumeau, Anne-Catherine ^{[1
,2
,3
,4
]}

Arcangeli, Marie-Laure ^{[2
,3
,4
,5
]}

De Grandis, Maria ^{[2
,3
,4
,5
]}

Giordano, Marilyn ^{[1
,2
,3
,4
]}

Orsoni, Jean-Christophe ^{[1
,2
,3
,4
]}

Lembo, Frederique ^{[1
,2
,3
,4
]}

Bardin, Florence ^{[2
,3
,4
,5
]}

Marchetto, Sylvie ^{[1
,2
,3
,4
]}

Aurrand-Lions, Michel ^{[2
,3
,4
,5
]}

Borg, Jean-Paul ^{[1
,2
,3
,4
]}

机构：

[1] INSERM, Ctr Rech Cancerol Marseille, Polarite Cellulaire Signalisat Cellulaire & Canc, U1068, F-13009 Marseille, France

[2] Inst J Paoli I Calmettes, F-13009 Marseille, France

[3] CNRS, UMR7258, F-13009 Marseille, France

[4] Univ Aix Marseille, F-13284 Marseille, France

[5] INSERM, Ctr Rech Cancerol Marseille, U1068, Mol Adherence Jonct Host Tumeur Interact, F-13009 Marseille, France

来源：

JOURNAL OF IMMUNOLOGY | 2016年 / 196卷 / 10期

关键词：

TYROSINE KINASE 7; WNT SIGNAL-TRANSDUCTION; SLAM FAMILY RECEPTORS; BONE-MARROW NICHE; PROGENITOR CELLS; PLANAR CELL; SELF-RENEWAL; PTK7; POLARITY; LEUKEMIA;

D O I：

10.4049/jimmunol.1500680

中图分类号：

R392 [医学免疫学]; Q939.91 [免疫学];

学科分类号：

100102 ;

摘要：

Hematopoietic stem cells (HSCs) located in adult bone marrow or fetal liver in mammals produce all cells from the blood system. At the top of the hierarchy are long-term HSCs endowed with lifelong self-renewal and differentiation properties. These features are controlled through key microenvironmental cues and regulatory pathways, such as Wnt signaling. We showed previously that PTK7, a tyrosine kinase receptor involved in planar cell polarity, plays a role in epithelial Wnt signaling; however, its function in hematopoiesis has remained unexplored. In this article, we show that PTK7 is expressed by hematopoietic stem and progenitor cells, with the highest level of protein expression found on HSCs. Taking advantage of a Ptk7-deficient mouse strain, we demonstrate that loss of Ptk7 leads to a diminished pool of HSCs but does not affect in vitro or in vivo hematopoietic cell differentiation. This is correlated with increased quiescence and reduced homing abilities of Ptk7-deficient hematopoietic stem and progenitor cells, unraveling novel and unexpected functions for planar cell polarity pathways in HSC fate.

引用

页码：4367 / 4377

页数：11