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Responsive fluorescence probe for detection of Hypochlorous acid in live cells and animals

Spectral Instruments Imaging

Jan 17, 2019

In this work, a new fluorescence probe, PQI, was developed for monitoring of the HOCl level in biological samples. The...

Improved differentiation of Retinal Organoids stem cells derived using rotating-wall vessels

Synthecon

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Pluripotent stem cells can be differentiated into 3D retinal organoids, with major cell types self-patterning into a...

IncuCyte webinar recording: CAR T-cell therapy, frontiers in cancer Immunotherapy

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The success of immune checkpoint blockade adds new therapeutic category to Cancers are the most heterogenous group of...

CT‐analyzer plug‐ins: ROI shrink‐wrap and primitive ROI

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Jan 7, 2019

The ROI shrink‐wrap gives the possibility to automatically generate a region‐of‐interest by adapting to the shape of...

Jan 23, 2019

ACEA Biosciences launch xCELLigence RTCA software Pro for immunotherapy applications

Acea Biosciences

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RTCA Software Pro is an integrated software package for running and analyzing real time cell analysis data from...

Cellular stress induces erythrocyte assembly and promotes microangiopathy

Fluxion Biosciences

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Microangiopathy with subsequent organ damage represents a major complication in several diseases. The mechanisms...

The need for ultra high field magnetic resonance imaging

Bruker Biospin

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MRI  is a noninvasive imaging technology that is known for its superior soft tissue contrast and ability to provide...

Jan 23, 2019

Live-cell labeling of endogenous proteins with nanometer precision by transduced nanobodies

Etaluma

Dec 6, 2018

Accurate labeling of endogenous proteins for advanced light microscopy in living cells remains challenging. Nanobodies...

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Cobalt (II) ions and nanoparticles induce macrophage retention by ROS-mediated down-regulation

May 21, 2018

Histological assessments of synovial tissues from patients with failed CoCr alloy hip prostheses demonstrate extensive infiltration and accumulation of macrophages, often loaded with large quantities of particulate debris. The resulting adverse reaction to metal debris (ARMD) frequently leads to early joint revision. Inflammatory response starts with the recruitment of immune cells and requires the egress of macrophages from the inflamed site for resolution of the reaction. Metal ions (Co2+ and Cr3+) have been shown to stimulate the migration of T lymphocytes but their effects on macrophages motility are still poorly understood. To elucidate this, scientists studied in vitro and in vivo macrophage migration during exposure to cobalt and chromium ions and nanoparticles. We found that cobalt but not chromium significantly reduces macrophage motility. This involves increase in cell spreading, formation of intracellular podosome-type adhesion structures and enhanced cell adhesion to the extracellular matrix (ECM). The formation of podosomes was also associated with the production and activation of matrix metalloproteinase-9 (MMP9) and enhanced ECM degradation.

Researchers showed that these were driven by the down-regulation of RhoA signalling through the generation of reactive oxygen species (ROS). These novel findings reveal the key mechanisms driving the wear/corrosion metallic byproducts-induced inflammatory response at non-toxic concentration.

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With a focus on portability, ease of use, high-quality imaging and fast frame-rate, Etaluma developed new concept in simple, affordable, and accessible fluorescence microscopy.

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