Abstract:
:A long-term goal of mesenchymal progenitor cell (MPC) research is to identify cell-surface markers to facilitate MPC isolation. One reported MPC feature in humans and other species is lack of CD14 (lipopolysaccharide receptor) expression. The aim of this study was to evaluate CD14 as an MPC sorting marker. Our hypothesis was that cells negatively selected by CD14 expression would enrich MPC colony formation compared with unsorted and CD14-positive fractions. After validation of reagents, bone marrow aspirate was obtained from 12 horses. Fresh and cultured cells were analyzed by flow cytometry and reverse transcription and quantitative polymerase chain reaction to assess dynamic changes in phenotype. In fresh samples, cells did not consistently express protein markers used for lineage classification. Short-term (2-day) culture allowed distinction between hematopoietic and nonhematopoietic populations. Magnetic activated cell sorting was performed on cells from 6 horses to separate adherent CD14(+) from CD14(-) cells. MPC colony formation was assessed at 7 days. Cells positively selected for CD14 expression were significantly more likely to form MPC colonies than both unsorted and negatively selected cells (P ≤ 0.005). MPCs from all fractions maintained low levels of CD14 expression long term, and upregulated CD14 gene and protein expression when stimulated with lipopolysaccharide. The equine CD14 molecule was trypsin-labile, offering a plausible explanation for the discrepancy with MPC phenotypes reported in other species. By definition, MPCs are considered nonhematopoietic because they lack expression of molecules such as CD14. Our results challenge this assumption, as equine MPCs appear to represent a descendant of a CD14-positive cell.
journal_name
Stem Cells Devjournal_title
Stem cells and developmentauthors
Hackett CH,Flaminio MJ,Fortier LAdoi
10.1089/scd.2010.0175subject
Has Abstractpub_date
2011-04-01 00:00:00pages
721-35issue
4eissn
1547-3287issn
1557-8534journal_volume
20pub_type
杂志文章abstract::Progenitor expansion during development is a highly regulated process dictating the final organ size, while expansion of specific progenitor populators can adjust the final cellular composition of the organ. Understanding factors involved in these pathways is required to develop cell-based therapies such as β-cell tra...
journal_title:Stem cells and development
pub_type: 杂志文章,评审
doi:10.1089/scd.2013.0106
更新日期:2013-11-15 00:00:00
abstract::Bone marrow human mesenchymal stem cells (hMSCs) are known to survive in serum-free media, when most normal somatic cells do not survive. We found that the endogenously-activated bone morphogenetic protein (BMP) pathway is involved in this cellular behavior. Under this culture condition, phosphorylated Smad1 (PSmad1),...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2009.0020
更新日期:2009-11-01 00:00:00
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journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2013.0588
更新日期:2014-07-15 00:00:00
abstract::In the mammalian olfactory epithelium (OE), olfactory receptor neurons (ORNs) are continuously regenerated throughout the animal's lifetime. Horizontal basal cells (HBCs) in the OE express the epithelial marker keratin 5 (K5) and the stem cell marker Pax6 and are considered relatively quiescent tissue stem cells in th...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2015.0011
更新日期:2015-08-15 00:00:00
abstract::Transcription factor FoxA1 plays a critical role during embryonic development and is activated during retinoic acid (RA)-induced neural differentiation of pluripotent P19 embryonal carcinoma cells at the early stage, which is marked by decreased expression of Nanog and increased expression of neural stem cell marker N...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2009.0386
更新日期:2010-09-01 00:00:00
abstract::Traumatic spinal cord injury (SCI) leads to a cascade of secondary chemical insults, including oxidative stress and glutamate excitotoxicity, which damage host neurons and glia. Transplantation of exogenous neural stem/progenitor cells (NSPCs) has shown promise in enhancing regeneration after SCI, although survival of...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2015.0389
更新日期:2016-08-15 00:00:00
abstract::In future, adipose-derived stem cells (ASC) might be used to treat neurological disorders. In this study, the neurotrophic and angiogenic properties of human ASC were evaluated, and their effects in a peripheral nerve injury model were determined. In vitro growth factor stimulation of the cells resulted in increased s...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2013.0396
更新日期:2014-04-01 00:00:00
abstract::To be clinically relevant as a therapy for heart failure, endogenous progenitor cells must be isolated and expanded from aged and/or diseased tissue. Here, we investigated the effect of age and cardiac impairment resulting from lack of dystrophin on murine cardiosphere-derived cells (CDCs). CDCs were isolated and expa...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2013.0388
更新日期:2014-05-01 00:00:00
abstract::Mesenchymal stromal cells (MSCs) are multipotent stem cells with immunosuppressive and trophic support functions. While MSCs from different sources frequently display a similar appearance in culture, they often show differences in their surface marker and gene expression profiles. Although bone marrow is considered th...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2017.0029
更新日期:2018-01-15 00:00:00
abstract::Mesenchymal stems cells (MSCs) are a population of multipotent cells residing in several readily available adult tissue compartments, thus allowing for their ex vivo expansion. To date, therapeutic applications of MSCs have focused on their ability to hone to and support the repair of damaged tissues. More recent evid...
journal_title:Stem cells and development
pub_type: 杂志文章,评审
doi:10.1089/scd.2011.0404
更新日期:2012-02-10 00:00:00
abstract::Previous studies have transplanted a variety of neural stem cells (NSCs) to the eye in hopes of developing a therapy to replace retinal neurons lost to disease. Successful integration, survival, and differentiation of the cell types has been variably successful. At the moment, little is known about the fundamental bio...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2007.0051
更新日期:2008-02-01 00:00:00
abstract::Perivascular regions of the brain harbor multipotent stem cells. We previously demonstrated that brain pericytes near blood vessels also develop multipotency following experimental ischemia in mice and these ischemia-induced multipotent stem cells (iSCs) can contribute to neurogenesis. However, it is essential to unde...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2016.0334
更新日期:2017-06-01 00:00:00
abstract::The peritoneum mesothelium lines body cavities and has the same origin as ovarian surface epithelium with probable existence of peritoneum mesenchymal stem cells (PMSCs). In the present research, PMSCs were isolated from peritoneum and differentiated into ovarian cell-like cells using human follicular fluid (HFF) and ...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2018.0149
更新日期:2019-04-15 00:00:00
abstract::Pluripotent stem cell-derived endothelial cells (ECs) have great potential to be used in vascular therapy or tissue engineering. It is also much desired to obtain arterial or venous ECs for specific applications. Factors that are critical for the proper arterial or venous differentiation from pluripotent stem cells st...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2017.0240
更新日期:2018-04-01 00:00:00
abstract::Members of helix-loop-helix (HLH) protein family of Id (inhibitor of differentiation) dimerize with bHLH transcription factors and function as negative regulators of differentiation during development. Most of inhibitory roles of Id proteins have been demonstrated in non-neural tissues, and their roles in the developi...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2009.0093
更新日期:2010-06-01 00:00:00
abstract::The projected annual demand for stem cell-based dental treatments in the United States can range from over 290 million tooth restorative treatments to 30,000 patients requiring tissue regeneration following craniofacial cancer surgery. Professional dental treatments cost Americans over $60 billion per year. Scientific...
journal_title:Stem cells and development
pub_type: 杂志文章,评审
doi:10.1089/scd.2006.15.881
更新日期:2006-12-01 00:00:00
abstract::Osteogenesis imperfecta (OI) is a genetic bone pathology with prenatal onset, characterized by brittle bones in response to abnormal collagen composition. There is presently no cure for OI. We previously showed that human first trimester fetal blood mesenchymal stem cells (MSCs) transplanted into a murine OI model (oi...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2013.0132
更新日期:2014-02-01 00:00:00
abstract::In the central nervous system (CNS), generation of phenotypic diversity within the neuronal lineage is precisely regulated in a spatial and temporal fashion. Neural basic helix-loop-helix (bHLH) transcription factors are cell intrinsic factors that control commitment to neuronal lineage and play an important role in n...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2006.0115
更新日期:2007-08-01 00:00:00
abstract::Immune suppression is a very stable property of multipotent stromal cells also known as mesenchymal stem cells (MSCs). All cell lines tested showed robust immune suppression not affected by a long culture history. Several mechanisms were described to account for this capability. Since several of the described mechanis...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2013.0433
更新日期:2014-07-15 00:00:00
abstract::To understand which growth factors/cytokines can affect migration of mesenchymal stem cells (MSCs) to injured tissues, we compared the effects of many (26) growth factors/cytokines on the migration activity of rabbit and human MSCs using a microchemotaxis chamber. Among them, platelet-derived growth factor (PDGF)-BB, ...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2006.0032
更新日期:2007-02-01 00:00:00
abstract::Tumor necrosis factor-α (TNF-α) has multiple effects on proliferation and differentiation of human mesenchymal stem cells. Transforming growth factor-activated kinase-1 (TAK1) mediates the activation of nuclear factor-kappa B (NF-κB), c-Jun N-terminal kinase (JNK), and p38 pathways in response to TNF-α. However, the r...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2014.0272
更新日期:2015-04-01 00:00:00
abstract::Humans and nonhuman primates (NHPs) are similar in size, behavior, physiology, biochemistry, structure and function of organs, and complexity of the immune system. Research on NHPs generates complementary data that bridge translational research from small animal models to humans. NHP models of human disease offer uniq...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2014.0374
更新日期:2014-12-01 00:00:00
abstract::Self-renewal and differentiation of endogenous stem cells (SCs) are essential for adult tissue homoeostasis and intrinsic healing capacity. In this study, we hypothesize that penis contains a small population of endogenous SCs, which might help rejuvenation of damaged erectile function. In this study, 60 newborn male ...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2014.0380
更新日期:2015-03-15 00:00:00
abstract::Spiral ganglion neurons (SGNs) are usually damaged in sensorineural hearing loss. SGN-derived neural stem cells (NSCs) have been identified and proposed to differentiate into neurons to replace damaged SGNs. However, it remains obscure whether SGN-NSC-derived neurons (ScNs) are electrophysiologically functional and po...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2015.0345
更新日期:2016-05-15 00:00:00
abstract::In recent years it has been hypothesized that cancer stem cells (CSCs) are the actual driving force of tumor formation, highlighting the need to specifically target CSCs to successfully eradicate cancer growth and recurrence. Particularly, the deregulation of physiological signaling pathways controlling stem cell prol...
journal_title:Stem cells and development
pub_type: 杂志文章,评审
doi:10.1089/scd.2015.0081
更新日期:2015-10-15 00:00:00
abstract::The corneal endothelium is believed to be developmentally originated from the periocular mesenchyme via the neural crest. Human corneal endothelial progenitor cells (HCEPs) have been investigated because of their potential availability for the tissue regenerative medicine. However, the existence and the properties of ...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2013.0387
更新日期:2014-09-15 00:00:00
abstract::Umbilical cord blood (CB) CD34(+) cells, on the basis of flow cytometry analysis, are comprised of multiple populations. In in vitro assays, only CD34(regular) FSC(high) cells are functional and low percentages of nonfunctional CD34(regular) FSC(low) cells were determined to be present in liquid-stored CB. Liquid-stor...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2006.15.124
更新日期:2006-02-01 00:00:00
abstract::Chronic idiopathic neutropenia (CIN) is a granulopoiesis disorder associated with an inhibitory bone marrow (BM) microenvironment consisting of activated T-lymphocytes and pro-inflammatory mediators. In this study, we investigated the possible involvement of BM mesenchymal stem cells (MSCs) in the pathophysiology of C...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2010.0425
更新日期:2011-08-01 00:00:00
abstract::Embryonic stem (ES) cells give rise to mesodermal progenitors that differentiate to hematopoietic and cardiovascular cells. The wnt signaling pathway plays multiple roles in cardiovascular development through a network of intracellular effectors. To monitor global changes in wnt signaling during ES cell differentiatio...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2011.0326
更新日期:2012-01-01 00:00:00
abstract::Lymphedema is a medically irreversible condition for which currently conservative and surgical therapies are either ineffective or impractical. The potential use of progenitor and stem cell-based therapies has offered a paradigm that may provide alternative treatment options for lymphatic disorders. Moreover, basic re...
journal_title:Stem cells and development
pub_type: 杂志文章,评审
doi:10.1089/scd.2014.0390
更新日期:2015-02-01 00:00:00