The rapid and accurate diagnosis of childhood malignancy is important both in the planning of appropriate treatment and in relieving the inevitable family anxiety. The use of flow cytometry to analyse monoclonal antibody coated single cell suspensions is widely accepted as having increased the speed and accuracy of diagnosis in leukaemias, though its use in solid tumour diagnosis is not widely reported. Ten cases of childhood malignancy in whom the diagnosis was initially made by flow cytometry and subsequently confirmed histologically are described. The technique has a number of advantages. Only a small sample is required as the analysis is carried out on a single cell suspension, the method is rapid, a diagnosis being reached within three hours of receipt of the sample, and information is obtained on cell lineage and stage of differentiation. Diagnostic accuracy is good when compared with histological results.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1793878 | PMC |
http://dx.doi.org/10.1136/adc.68.3.393 | DOI Listing |
Background: Although invasiveness is one of the major determinants of the poor glioblastoma (GBM) outcome, the mechanisms of GBM invasion are only partially understood. Among the intrinsic and environmental processes promoting cell-to-cell interaction processes, eventually driving GBM invasion, we focused on the pro-invasive role played by Extracellular Vesicles (EVs), a heterogeneous group of cell-released membranous structures containing various bioactive cargoes, which can be transferred from donor to recipient cells.
Methods: EVs isolated from patient-derived GBM cell lines and surgical aspirates were assessed for their pro-migratory competence by spheroid migration assays, calcium imaging, and PYK-2/FAK phosphorylation.
Immunohorizons
January 2025
Agilex Biolabs, Adelaide, South Australia, Australia.
Enzyme-linked immunosorbent spot analysis is frequently used to investigate immune responsiveness during clinical trials. However, ELISpot classically utilizes peripheral blood mononuclear cell isolates from whole blood, requiring relatively high blood draw volumes and removing both granulocytes and bound drug. Here, we describe a novel protocol whereby CD45 cells are magnetically isolated from human whole blood and co-incubated with serum isolated from the same subject.
View Article and Find Full Text PDFmBio
January 2025
Department of Medical and Molecular Genetics and Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, Indiana, USA.
causes the genital ulcer disease chancroid and cutaneous ulcers in children. To study its pathogenesis, we developed a human challenge model in which we infect the skin on the upper arm of human volunteers with to the pustular stage of disease. The model has been used to define lesional architecture, describe the immune infiltrate into the infected sites using flow cytometry, and explore the molecular basis of the immune response using bulk RNA-seq.
View Article and Find Full Text PDFAnal Chem
January 2025
Key Laboratory of Organosilicon Chemistry and Materials Technology of the Ministry of Education, Zhejiang Key Laboratory of Organosilicon Material Technology, College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, P. R. China.
As many treatments kill tumor cells by inducing apoptosis, fluorescent probes that can detect apoptosis are crucial for effective feedback regarding tumor therapy outcomes (in particular, activatable probes for better imaging). Cathepsins are enzymes that are released from lysosomes into the cytoplasm during lysosomal membrane permeabilization-induced apoptosis of many tumor cells, making them potential biomarkers of apoptotic cells. Despite their potential, to the best of our knowledge, no cathepsin-activatable fluorescent probes have been reported for this purpose.
View Article and Find Full Text PDFMater Today Bio
April 2025
Department of Laboratory Medicine, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan Province, China.
Purpose: infection is the most common pathogen in burn wound infections, causing delayed wound healing and progression to chronic wounds. Therefore, there is an urgent need to develop antimicrobial agents that can promote wound healing for effectively treating infected wounds.
Patients And Methods: Using magnetic stirring and ultrasound to synthesize Apt-pM@UCNPmSiO-Cur-CAZ.
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