Dorsal Lateral Plate Mesoderm Influences Proliferation and Differentiation of Hemopoietic Stem Cells Derived From Ventral Lateral Plate Mesoderm During Early Development of Xenopus laevis Embryos

1985 ◽  
Vol 38 (3) ◽  
pp. 415-427 ◽  
Author(s):  
James B. Turpen ◽  
Paula B. Smith
Blood ◽  
1982 ◽  
Vol 60 (4) ◽  
pp. 872-876
Author(s):  
MT Aye ◽  
JV Dunne ◽  
WC Yang

Adenosine deaminase (ADA) deficiency has been reported in association with severe combined immunodeficiency disease (SCID). The mechanism by which ADA deficiency causes immune dysfunction has been investigated in model systems to which the ADA inhibitor deoxycoformycin (dCf) had been added. Previously, we demonstrated that dCF did not prevent proliferation and differentiation of myeloid and lymphoid stem cells. We have now shown that addition of deoxyadenosine to dCf-containing cultures inhibited proliferation of hemopoietic stem cells. This inhibition was, however, equally effective for both normal myeloid and lymphoid stem cells. These findings suggest that other differences may exist between SCID myeloid and lymphoid stem cells to account for the relative sparing of myelopoiesis in SCID patients.


2010 ◽  
Vol 344 (1) ◽  
pp. 519
Author(s):  
Randy Daughters ◽  
Ying Chen ◽  
Jonathan M. Slack

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Liangliang Sun ◽  
Michelle M. Bertke ◽  
Matthew M. Champion ◽  
Guijie Zhu ◽  
Paul W. Huber ◽  
...  

Development ◽  
1995 ◽  
Vol 121 (3) ◽  
pp. 693-705 ◽  
Author(s):  
G. Oliver ◽  
R. Wehr ◽  
N.A. Jenkins ◽  
N.G. Copeland ◽  
B.N. Cheyette ◽  
...  

In vertebrates, limb tendons are derived from cells that migrate from the lateral plate mesoderm during early development. While some of the developmental steps leading to the formation of these tissues are known, little is known about the molecular mechanisms controlling them. We have identified two murine homeobox-containing genes, Six 1 and Six 2, which are expressed in a complementary fashion during the development of limb tendons. Transcripts for both genes are found in different sets of phalangeal tendons. Six 1 and Six 2 also are expressed in skeletal and smooth muscle, respectively. These genes may participate in the patterning of the distal tendons of the limb phalanges by setting positional values along the limb axes.


Development ◽  
1997 ◽  
Vol 124 (10) ◽  
pp. 1975-1984 ◽  
Author(s):  
A. Tonegawa ◽  
N. Funayama ◽  
N. Ueno ◽  
Y. Takahashi

Molecular mechanisms by which the mesoderm is subdivided along the mediolateral axis in early chicken embryos have been studied. When the presomitic mesoderm (medial mesoderm) was transplanted into the lateral plate, the graft was transformed into lateral plate tissue, indicating that the primitive somite was not fully committed and that the lateral plate has a cue for mesodermal lateralization. Since the lateral plate expresses a high level of BMP-4 mRNA, a member of the TGF-beta family, we hypothesized that it is the molecule responsible for the lateralization of the somite. To test this, we transplanted COS cells producing BMP-4 into the presomitic region. Those cells locally prevented the presomitic cells from differentiating into somites, converting them instead into lateral plate mesoderm, which was revealed by expression of cytokeratin mRNA, a marker for the lateral plate. The effect was dependent on the level of effective BMP-4: with a high level of BMP-4, the somite was transformed completely to lateral plate; with a low level, the somite formed but was occupied by the lateral somitic component expressing cSim 1, a marker for the lateral somite. These results suggest that different thresholds of effective BMP-4 determine distinct subtypes of the mesoderm as a lateralizer during early development.


Blood ◽  
2003 ◽  
Vol 101 (3) ◽  
pp. 856-862 ◽  
Author(s):  
Susan K. Nilsson ◽  
David N. Haylock ◽  
Hayley M. Johnston ◽  
Teresa Occhiodoro ◽  
Tracey J. Brown ◽  
...  

Abstract The localization of adult hemopoiesis to the marrow involves developmentally regulated interactions between hemopoietic stem cells and the stromal cell–mediated hemopoietic microenvironment. Although primitive hemopoietic cells exhibit a broad repertoire of adhesion molecules, little is known about the molecules influencing the site of cell lodgment within the marrow following transplantation. However, our recent studies indicate that hierarchically dependent patterns of migration of transplanted hemopoietic cells result in the retention of primitive cells within the endosteal and lineage-committed cells in the central marrow regions. Herein, we now demonstrate that these 2 subpopulations exhibit a striking difference in the expression of a cell surface adhesion molecule, with populations enriched for murine and human hemopoietic stem cells expressing the carbohydrate hyaluronic acid (HA). Furthermore, the presence of this glycosaminoglycan appears critical for the spatial distribution of transplanted stem cells in vivo. In addition, we also demonstrate that the binding of HA by a surrogate ligand results in marked inhibition of primitive hemopoietic cell proliferation and granulocyte differentiation. Collectively, these data describe an important yet previously unrecognized role for HA in the biology of primitive hemopoietic progenitor cells.


Blood ◽  
1982 ◽  
Vol 60 (4) ◽  
pp. 872-876 ◽  
Author(s):  
MT Aye ◽  
JV Dunne ◽  
WC Yang

Abstract Adenosine deaminase (ADA) deficiency has been reported in association with severe combined immunodeficiency disease (SCID). The mechanism by which ADA deficiency causes immune dysfunction has been investigated in model systems to which the ADA inhibitor deoxycoformycin (dCf) had been added. Previously, we demonstrated that dCF did not prevent proliferation and differentiation of myeloid and lymphoid stem cells. We have now shown that addition of deoxyadenosine to dCf-containing cultures inhibited proliferation of hemopoietic stem cells. This inhibition was, however, equally effective for both normal myeloid and lymphoid stem cells. These findings suggest that other differences may exist between SCID myeloid and lymphoid stem cells to account for the relative sparing of myelopoiesis in SCID patients.


Sign in / Sign up

Export Citation Format

Share Document