scholarly journals T-Type Ca2+ Channel Blockers Increase Smooth Muscle Progenitor Cells and Endothelial Progenitor Cells in Bone Marrow Stromal Cells in Culture by Suppression of Cell Death

2010 ◽  
Vol 3 (2) ◽  
pp. 117-126 ◽  
Author(s):  
Ryota Hashimoto ◽  
Youichi Katoh ◽  
Seigo Itoh ◽  
Takafumi Iesaki ◽  
Hiroyuki Daida ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Cell Death ◽  
Smooth Muscle ◽  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Stromal Cells ◽  
Bone Marrow Stromal Cells ◽  
Marrow Stromal Cells ◽  
Channel Blockers ◽  
Cells In Culture

scholarly journals A novel 37-Kd adhesive membrane protein from cloned murine bone marrow stromal cells and cloned murine hematopoietic progenitor cells

Blood ◽  
1993 ◽  
Vol 82 (5) ◽  
pp. 1436-1444 ◽  
Author(s):  
Y Shiota ◽  
JG Wilson ◽  
K Harjes ◽  
ED Zanjani ◽  
M Tavassoli
Keyword(s):  
Bone Marrow ◽  
Progenitor Cells ◽  
Stromal Cells ◽  
Bone Marrow Stromal Cells ◽  
Stromal Cell ◽  
Hematopoietic Cells ◽  
Marrow Stromal Cells ◽  
Hematopoietic Progenitor Cells ◽  
Single Chain ◽  
Hematopoietic Progenitor

Abstract The adhesion of hematopoietic progenitor cells to bone marrow stromal cells is critical to hematopoiesis and involves multiple effector molecules. Stromal cell molecules that participate in this interaction were sought by analyzing the detergent-soluble membrane proteins of GBI/6 stromal cells that could be adsorbed by intact FDCP-1 progenitor cells. A single-chain protein from GBI/6 cells having an apparent molecular weight of 37 Kd was selectively adsorbed by FDCP-1 cells. This protein, designated p37, could be surface-radiolabeled and thus appeared to be exposed on the cell membrane. An apparently identical 37- Kd protein was expressed by three stromal cell lines, by Swiss 3T3 fibroblastic cells, and by FDCP-1 and FDCP-2 progenitor cells. p37 was selectively adsorbed from membrane lysates by a variety of murine hematopoietic cells, including erythrocytes, but not by human erythrocytes. Binding of p37 to cells was calcium-dependent, and was not affected by inhibitors of the hematopoietic homing receptor or the cell-binding or heparin-binding functions of fibronectin. It is proposed that p37 may be a novel adhesive molecule expressed on the surface of a variety of hematopoietic cells that could participate in both homotypic and heterotypic interactions of stromal and progenitor cells.

Muc1 Expression Identifies Human Self-Renewing Stem/Progenitor Populations and Is Elevated in AML CD34+ Cells.

Blood ◽  
2007 ◽  
Vol 110 (11) ◽  
pp. 4040-4040
Author(s):  
Szabolcs Fatrai ◽  
Simon M.G.J. Daenen ◽  
Edo Vellenga ◽  
Jan J. Schuringa
Keyword(s):  
Bone Marrow ◽  
Stem Cell ◽  
Progenitor Cells ◽  
Stromal Cells ◽  
Bone Marrow Stromal Cells ◽  
Fold Increase ◽  
Marrow Stromal Cells ◽  
Muc1 Expression ◽  
Hematopoietic Stem ◽  
Cd34 Cells

Abstract Mucin1 (Muc1) is a membrane glycoprotein which is expressed on most of the normal secretory epithelial cells as well as on hematopoietic cells. It is involved in migration, adhesion and intracellular signalling. Muc1 can be cleaved close to the membrane-proximal region, resulting in an intracellular Muc1 that can associate with or activate various signalling pathway components such as b-catenin, p53 and HIF1a. Based on these properties, Muc1 expression was analysed in human hematopoietic stem/progenitor cells. Muc1 mRNA expression was highest in the immature CD34+/CD38− cells and was reduced upon maturation towards the progenitor stage. Cord blood (CB) CD34+ cells were sorted into Muc1+ and Muc1− populations followed by CFC and LTC-IC assays and these experiments revealed that the stem and progenitor cells reside predominantly in the CD34+/Muc1+ fraction. Importantly, we observed strongly increased Muc1 expression in the CD34+ subfraction of AML mononuclear cells. These results tempted us to further study the role of Muc1 overexpression in human CD34+ stem/progenitor cells. Full-length Muc1 (Muc1F) and a Muc1 isoform with a deleted extracellular domain (DTR) were stably expressed in CB CD34+ cells using a retroviral approach. Upon coculture with MS5 bone marrow stromal cells, a two-fold increase in expansion of suspension cells was observed in both Muc1F and DTR cultures. In line with these results, we observed an increase in progenitor counts in the Muc1F and DTR group as determined by CFC assays in methylcellulose. Upon replating of CFC cultures, Muc1F and DTR were giving rise to secondary colonies in contrast to empty vector control groups, indicating that self-renewal was imposed on progenitors by expression of Muc1. A 3-fold and 2-fold increase in stem cell frequencies was observed in the DTR and Muc1F groups, respectively, as determined by LTC-IC assays. To determine whether the above mentioned phenotypes in MS5 co-cultures were stroma-dependent, we expanded Muc1F and DTR-transduced cells in cytokine-driven liquid cultures. However, no proliferative advantage or increase in CFC frequencies was observed suggesting that Muc1 requires bone marrow stromal cells. In conclusion, our data indicate that HSCs as well as AML cells are enriched for Muc1 expression, and that overexpression of Muc1 in CB cells is sufficient to increase both progenitor and stem cell frequencies.

scholarly journals Expression of glypican-4 in haematopoietic-progenitor and bone-marrow-stromal cells

1999 ◽  
Vol 344 (3) ◽  
pp. 937-943 ◽  
Author(s):  
Barbara SIEBERTZ ◽  
Georg STÖCKER ◽  
Zofia DRZENIEK ◽  
Stefan HANDT ◽  
Ursula JUST ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Progenitor Cells ◽  
Stromal Cells ◽  
Blot Analysis ◽  
Bone Marrow Stromal Cells ◽  
Heparan Sulphate ◽  
Marrow Stromal Cells ◽  
Heparan Sulphate Proteoglycan ◽  
Normal Human ◽  
Normal Human Bone Marrow

Heparan sulphate proteoglycans and the extracellular matrix of bone-marrow-stromal cells are important components of the microenvironment of haematopoietic tissues and are involved in the interaction of haematopoietic stem and stromal cells. Previous studies have emphasized the role of heparan sulphate proteoglycan synthesis by bone-marrow-stromal cells. In the present study we describe the expression of glypican-4 (GPC-4), belonging to the glypican family, in bone-marrow-stromal cells and haematopoietic-progenitor cells of human and murine origin. Expression of GPC-4 was shown on the mRNA-level by reverse transcription-PCR and Northern blot analysis. Amplification products were cloned and sequenced, to confirm these results. To analyze the expression of GPC-4 on the protein level, polyclonal antibodies against selected peptides were raised in rabbits. Western blot analysis showed expression of GPC-4 as a heparan sulphate proteoglycan in the human haematopoietic-progenitor cell line TF-1 and normal human bone marrow. These results were confirmed by FACS analysis of TF-1 cells. Furthermore, GPC-4-positive progenitor cells and stromal cells were enriched from normal human bone marrow by magnetic-cell sorting and analysed by confocal laser-scanning microscopy.

176: Soluble Substances from Bladder Smooth Muscle Cells Induce Smooth Muscle Cell-Like Phenotype in Bone Marrow Stromal Cells

2004 ◽  
Vol 171 (4S) ◽  
pp. 47-47
Author(s):  
Akihiro Kanematsu ◽  
Shingo Yamamoto ◽  
Eri Iwai-Kanai ◽  
Isao Kanatani ◽  
Yasuhiko Tabata ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Smooth Muscle Cell ◽  
Muscle Cell ◽  
Stromal Cells ◽  
Bone Marrow Stromal Cells ◽  
Muscle Cells ◽  
Marrow Stromal Cells ◽  
Bladder Smooth Muscle
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