Not exact matches
They first devised a nanoscale plastic scaffold and then seeded it
with common muscle precursor
cells called myoblasts, along
with endothelial cells of the sort found on the inside
of blood vessels.
«The effect
of the precursors that boost NAD is to counteract the decline that occurs
with normal aging, to reactivate SIRT1, and to restore function in
endothelial cells to give rise to more blood vessels.»
In a collaborative effort between the Gladstone laboratories
of Benoit Bruneau, PhD, Katherine Pollard, PhD, and Dr. Srivastava, the scientists used stem
cell technology to make large amounts
of endothelial cells from patients
with CAVD, comparing them to healthy
cells and mapping their genetic and epigenetic changes as they developed into valve
cells.
In the chamber, tubes about the thickness
of a human hair were lined
with endothelial cells as in natural blood vessels.
They found that, while the grafts
of undifferentiated iPS
cells harbored large numbers
of T
cells of only a few specificities — indicating a robust immune response — those found in grafts
of the two types
of endothelial cells were more diverse, suggesting a more limited response associated
with a phenomenon known as self - tolerance.
When zebrafish
with the green fluorescing
endothelial gene matured, the researchers observed green FGPs on the surface
of the fish's brains — confirming that these
cells arose from
endothelial tissue.
Professor Takao Hamakubo's group at the Department
of Quantitative Biology and Medicine, Research Center for Advanced Science and Technology (RCAST), have shown that PTX3 forms strong bonds
with histones and partially unfolds, leading to a disordered coaggregation
of histone and PTX3 and protecting human
endothelial cells from damage.
In contrast, the elongated nanorods have a larger surface area that is in contact
with the surface
of the
endothelial cells.
Researchers from Massachusetts Eye and Ear have, for the first time, identified rapidly proliferating
cells (known as «neural crest - derived progenitor
cells») in the corneal endothelium
of specimens from normal corneas and from corneas
with Fuchs»
Endothelial Corneal Dystrophy (FECD), a condition in which the
cells responsible for keeping the cornea clear die prematurely — often leading to blindness.
The epithelium's maturation into a villus intestinal epithelium
with long finger - like extensions was helped along by co-culturing human intestinal microvascular
endothelial cells on the opposite side
of the shared matrix - coated porous membrane in the «vascular» channel where they assembled a surrogate blood vessel
with a hollow lumen through which feeding medium was flowed.
To verify that the process worked, the
endothelial cells with the inversion - corrected genes were transplanted into F8 deficient mice (mice
with hemophilia A) and the mice started producing the F8 clotting factor on their own, which essentially cured them
of hemophilia A.
«ECPR and a factor in the blood called protein C act as a «brake» on blood coagulation and
endothelial cell inflammation and also enhance the viability and integrity
of blood vessels, but when the malaria parasites use PfEMP1 to bind EPCR, they may interfere
with the normal function
of EPCR, and thus the binding can be the catalyst for the violent reaction,» he explains.
To study this barrier and determine why a lack
of blood flow causes it to leak, the researchers built a blood - vessel - on - a-chip model consisting
of a channel lined
with a layer
of human
endothelial cells surrounded by extracellular matrix within a microfluidic device, which allowed them to easily simulate and control the flow
of blood through a vessel and evaluate the
cells» responses.
This experiment uses quantitative PCR to detect the expression level
of POSTN in CD34 + / CD31 − pulmonary fibroblasts, CD31 +
endothelial cells, and CD45 + immune
cells isolated from lungs
of mice
with macrometastases, which is a replication
of the experiment reported in Figure 2H.
B, CSCs isolated from 231BrM infected
with lentivirus
of miR7 or KLF4 expression plasmids were seeded on top
of mouse brain
endothelial cells or Matrigel.
Matrigel - containing plates were allowed to incubate at 37 °C for 30 min and then seeded
with endothelial cells at a density
of 4 × 104
cells / well in 10 % DMEM.
Phase - contrast images
of organ - derived
endothelial cells (37 °C) on Matrigel surface (A) and after 4 h
of incubation
with DiI - Ac - LDL (B).
One
of the primary objectives
of this study was to establish a protocol to facilitate the identification and selection
of microvascular
endothelial cells from primary organ cultures
with a high degree
of precision.
We have observed on several occasions that, for the majority
of endothelial cell lines, the transfer to 37 °C conditions for 72 h correlated
with a 50 % reduction in
cell proliferation, a value that continued to decrease
with time.
As expected, all
of the
endothelial cell lines showed diminished constitutive expression
of E-selectin (data not shown) and VCAM - 1 (Fig. 4C) ⇓ in comparison
with surface levels
of ICAM - 1 (Fig. 4B) ⇓.
A, CSCs isolated from 231BrM and MB231
with the ectopic expression
of miR7 and miR7 - LNA were seeded on top
of mouse brain
endothelial cells or Matrigel.
To determine inducible
endothelial cell adhesion molecule expression (E-selectin, VCAM - 1, and ICAM - 1), some
of the chambers were given medium containing 10 ng / ml TNF - α for 4 — 6 h (these time points were selected to correlate
with the known kinetics
of endothelial cell adhesion molecule expression; Refs.
Endothelial cells derived from the brain demonstrated a complete absence
of uptake after 4 h
of incubation (at 33 °C or 37 °C)
with this fluorescent reagent (data not shown).
However, efforts to examine the in vitro behavior
of tumor
cells with endothelial cells from different anatomical regions have been prohibited because, in large part,
of the limited number
of organ - derived
endothelial cell lines available for study.
In B,
endothelial cells from different tissues were seeded at a density of 1 × 105 cells / chamber in two - chamber slides and incubated with 10 mg / ml DiI - Ac - LDL in 10 % DMEM for 4 h. Cells were washed with label - free medium and fixed in 4 % paraformalde
cells from different tissues were seeded at a density
of 1 × 105
cells / chamber in two - chamber slides and incubated with 10 mg / ml DiI - Ac - LDL in 10 % DMEM for 4 h. Cells were washed with label - free medium and fixed in 4 % paraformalde
cells / chamber in two - chamber slides and incubated
with 10 mg / ml DiI - Ac - LDL in 10 % DMEM for 4 h.
Cells were washed with label - free medium and fixed in 4 % paraformalde
Cells were washed
with label - free medium and fixed in 4 % paraformaldehyde.
The onset
of tube structure formation could be visualized as early as 4 h after plating for most
endothelial cell lines,
with extensive networks becoming visible within 12 h after plating.
Pilot studies using a variety
of strategies suggested that this goal could be best achieved by stimulating primary organ
cell cultures
with TNF - α (10 ng / ml) and targeting
cells expressing the
endothelial cell adhesion molecules E-selectin and VCAM - 1 through a FACS - driven strategy.
The present demonstration
of T
cell - mediated apoptosis
of allogeneic corneal
cells from CD4 KO mice is consistent
with previous findings, which noted the presence
of apoptotic keratocytes and corneal
endothelial cells in rejected corneal allografts in humans and rats respectively (5, 32).
«We're very interested in following up by finding more direct proof that if you block the recruitment
of immune
cells to tumors, you can reverse this phenomenon in these animals
with endothelial cell insulin resistance,» Rask - Madsen says.
In keeping
with this, recent studies showed that flavanols, a subclass
of flavonoids that is richly represented in natural cocoa beans, increase NO production by cultured human vascular
endothelial cells (16) and improve endothelium - dependent vasorelaxation (NO - dependent) in finger (2) and brachial (3) arteries
of healthy humans.
The scientists began
with a line
of mice in which the gene for the insulin receptor has been knocked out in
endothelial cells only.
MicroRNA - 24 inhibits the proliferation and migration
of endothelial cells in patients
with atherosclerosis by targeting importin - a3 and regulating inflammatory responses.
In the case
of rabbit corneal
endothelial cells, which are known to divide
with regularity, AP - BrdU staining was always seen following a mechanical wound, as shown in Figure 3.
If we understand the special features
of insulin resistance in
endothelial cells, we may be able to find more effective treatments against artery damage and cardiovascular disease in people
with diabetes.»
Briefly, single -
cell suspensions
of C57BL / 6 KO and wild - type lymphocytes, which had undergone a 96 hr in vitro boost
with γ - irradiated (3,000 rad) BALB / c stimulator lymphocytes, were added to 96 - well microtiter plates (Corning Inc., Corning, NY) along
with 2 × 104 51Cr - labeled BALB / c corneal epithelial or
endothelial cells in a total volume
of 200 μl / well.
With potential therapeutic implications, Stainier and a colleague also recently discovered that
endothelial cells, which line the blood vessels, play a critical role in inducing the development, or proper differentiation,
of red blood
cells, the transporters
of oxygen.
Extended life
of human corneal
endothelial cells transfected
with the SV40 large T antigen.
This gave a mixed population
of cells with 20 % expressing CD34, a hematopoietic stem
cell marker,
with some co-expression
of endothelial cell markers (CD31, Flk1, and VE - cadherin).
Researchers from the laboratories
of Hiroshi Y. Yoshikawa and Hideki Taniguchi had previously demonstrated the in vitro formation
of a 3D transplantable liver «organ bud» from human induced pluripotent stem
cells (iPSCs) co-cultured
with mesenchymal and
endothelial progenitors, and allows for the growth
of a small vascularized and functional organ [1 - 3].
(3,18; cf. 19,20) Even in visceral fat, it has recently emerged that the obesity - driven rise in inflammation and insulin resistance is associated
with an abnormal accumulation
of senescent
cells, albeit senescent
endothelial cells rather than adipocytes.
A microscopic image
of endothelial cells treated
with drug - loaded nanoparticles.
Unlike peripheral capillaries, which allow the relatively free exchange
of substances
with the surrounding tissue, the capillaries in the brain are tightly packed
with endothelial cells.
A team at the Harvard John A. Paulson School for Engineering and Applied Sciences (SEAS) and the Wyss Institute for Biologically Inspired Engineering at Harvard University has invented a method for 3D bioprinting thick vascularized tissue constructs composed
of human stem
cells, extracellular matrix, and circulatory channels lined
with endothelial blood vessel
cells.
Project: A Study
of the Dynamics
of Schlemm's Canal
Endothelial Cells using a Three - dimensional
Cell Culture Device
with Real - time Imaging.
In fact, several
of the best characterized anti-angiogenic compounds were initially detected and selected for their capability to interfere
with endothelial cell growth.
We also found that the EphB4 receptor expressed on the surface
of breast cancer
cells can promote tumor xenograft growth by enhancing blood vessel formation through interactions
with its preferred ligand, ephrin - B2, present in tumor
endothelial cells.
Survival curves
of proliferative (squares) and non-proliferative (circles) HUVEC
endothelial cells treated
with kahweol.
This is the case
of the extremely selective inhibitor
of endothelial cell proliferation TNP - 470, a synthetic analog
of fumagillin
with enhanced anti-angiogenic properties [22], [23].
Susan Amara, USA - «Regulation
of transporter function and trafficking by amphetamines, Structure - function relationships in excitatory amino acid transporters (EAATs), Modulation
of dopamine transporters (DAT) by GPCRs, Genetics and functional analyses
of human trace amine receptors» Tom I. Bonner, USA (Past Core Member)- Genomics, G protein coupled receptors Michel Bouvier, Canada - Molecular Pharmacology
of G protein - Coupled Receptors; Molecular mechanisms controlling the selectivity and efficacy
of GPCR signalling Thomas Burris, USA - Nuclear Receptor Pharmacology and Drug Discovery William A. Catterall, USA (Past Core Member)- The Molecular Basis
of Electrical Excitability Steven Charlton, UK - Molecular Pharmacology and Drug Discovery Moses Chao, USA - Mechanisms
of Neurotophin Receptor Signaling Mark Coles, UK - Cellular differentiation, human embryonic stem
cells, stromal
cells, haematopoietic stem
cells, organogenesis, lymphoid microenvironments, develomental immunology Steven L. Colletti, USA Graham L Collingridge, UK Philippe Delerive, France - Metabolic Research (diabetes, obesity, non-alcoholic fatty liver, cardio - vascular diseases, nuclear hormone receptor, GPCRs, kinases) Sir Colin T. Dollery, UK (Founder and Past Core Member) Richard M. Eglen, UK Stephen M. Foord, UK David Gloriam, Denmark - GPCRs, databases, computational drug design, orphan recetpors Gillian Gray, UK Debbie Hay, New Zealand - G protein - coupled receptors, peptide receptors, CGRP, Amylin, Adrenomedullin, Migraine, Diabetes / obesity Allyn C. Howlett, USA Franz Hofmann, Germany - Voltage dependent calcium channels and the positive inotropic effect
of beta adrenergic stimulation; cardiovascular function
of cGMP protein kinase Yu Huang, Hong Kong -
Endothelial and Metabolic Dysfunction, and Novel Biomarkers in Diabetes, Hypertension, Dyslipidemia and Estrogen Deficiency, Endothelium - derived Contracting Factors in the Regulation
of Vascular Tone, Adipose Tissue Regulation
of Vascular Function in Obesity, Diabetes and Hypertension, Pharmacological Characterization
of New Anti-diabetic and Anti-hypertensive Drugs, Hypotensive and antioxidant Actions
of Biologically Active Components
of Traditional Chinese Herbs and Natural Plants including Polypehnols and Ginsenosides Adriaan P. IJzerman, The Netherlands - G protein - coupled receptors; allosteric modulation; binding kinetics Michael F Jarvis, USA - Purines and Purinergic Receptors and Voltage-gated ion channel (sodium and calcium) pharmacology Pain mechanisms Research Reproducibility Bong - Kiun Kaang, Korea - G protein - coupled receptors; Glutamate receptors; Neuropsychiatric disorders Eamonn Kelly, Prof, UK - Molecular Pharmacology
of G protein - coupled receptors, in particular opioid receptors, regulation
of GPCRs by kinasis and arrestins Terry Kenakin, USA - Drug receptor pharmacodynamics, receptor theory Janos Kiss, Hungary - Neurodegenerative disorders, Alzheimer's disease Stefan Knapp, Germany - Rational design
of highly selective inhibitors (so call chemical probes) targeting protein kinases as well as protein interaction inhibitors
of the bromodomain family Andrew Knight, UK Chris Langmead, Australia - Drug discovery, GPCRs, neuroscience and analytical pharmacology Vincent Laudet, France (Past Core Member)- Evolution
of the Nuclear Receptor / Ligand couple Margaret R. MacLean, UK - Serotonin, endothelin, estrogen, microRNAs and pulmonary hyperten Neil Marrion, UK - Calcium - activated potassium channels, neuronal excitability Fiona Marshall, UK - GPCR molecular pharmacology, structure and drug discovery Alistair Mathie, UK - Ion channel structure, function and regulation, pain and the nervous system Ian McGrath, UK - Adrenoceptors; autonomic transmission; vascular pharmacology Graeme Milligan, UK - Structure, function and regulation
of G protein - coupled receptors Richard Neubig, USA (Past Core Member)- G protein signaling; academic drug discovery Stefan Offermanns, Germany - G protein - coupled receptors, vascular / metabolic signaling Richard Olsen, USA - Structure and function
of GABA - A receptors; mode
of action
of GABAergic drugs including general anesthetics and ethanol Jean - Philippe Pin, France (Past Core Member)- GPCR - mGLuR - GABAB - structure function relationship - pharmacology - biophysics Helgi Schiöth, Sweden David Searls, USA - Bioinformatics Graeme Semple, USA - GPCR Medicinal Chemistry Patrick M. Sexton, Australia - G protein - coupled receptors Roland Staal, USA - Microglia and neuroinflammation in neuropathic pain and neurological disorders Bart Staels, France - Nuclear receptor signaling in metabolic and cardiovascular diseases Katerina Tiligada, Greece - Immunopharmacology, histamine, histamine receptors, hypersensitivity, drug allergy, inflammation Georg Terstappen, Germany - Drug discovery for neurodegenerative diseases
with a focus on AD Mary Vore, USA - Activity and regulation
of expression and function
of the ATP - binding cassette (ABC) transporters
Figure 4 shows the mean survival curves obtained
with the MTT assay in human umbilical vein
endothelial cells (HUVEC), under conditions
of normal and low proliferation rates (20 % and 2 %
of FBS).