Obtaining sufficient statistics in quantitative fluorescence microscopy is often hampered by the tedious and time-consuming task of manually locating comparable specimen and repeatedly launching the same acquisition protocol. Recent advances in combining fluorescence microscopy with online image analysis tackle this problem by fully integrating the task of identifying and locating the specimen of interest in an automated acquisition workflow. Here, we describe the general requirements and specific microscope control and image analysis software solutions for implementing such automated online feedback microscopy. We demonstrate the power of the method by two selected applications addressing high-throughput 3D imaging of sparsely parasite-infected tissue culture cells and automated fluorescence recovery after photobleaching experiments to quantify the turnover of vesicular coat proteins at ER exit sites.
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http://dx.doi.org/10.1016/B978-0-12-420138-5.00026-4 | DOI Listing |
Mod Pathol
January 2025
Bielefeld University, Medical School and University Medical Center OWL, Lung Cancer Center Lippe, Department of Pathology, Klinikum Lippe Detmold, 32756 Detmold, Germany. Electronic address:
Intraoperative consultation is frequently used during the surgical treatment of lung tumors for the diagnosis of malignancy and the assessment of surgical margins. The latter is often problematic given the nature of the applied staple lines, which cannot be readily examined in frozen sections. Seventy-nine samples of surgical margins (71 staple lines and 8 open margins) from 52 lung specimens were examined using an ex vivo fluorescence confocal microscope (FCM).
View Article and Find Full Text PDFOcul Surf
January 2025
Division of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-gu, Pohang, Gyeongbuk, Republic of Korea, 37673; Department of Mechanical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-gu, Pohang, Gyeongbuk, Republic of Korea, 37673. Electronic address:
Purpose: To introduce and validate quantitative oblique back-illumination microscopy (qOBM) as a label-free, high-contrast imaging technique for visualizing conjunctival goblet cells (GCs) and assessing their functional changes.
Methods: qOBM was developed in conjunction with moxifloxacin-based fluorescence microscopy (MBFM), which was used for validating GC imaging. Initial validation was conducted with polystyrene beads, followed by testing on normal mouse conjunctiva under both ex-vivo and in-vivo conditions.
Int Immunopharmacol
January 2025
Cheeloo College of Medicine, Shandong University, Jinan 250012, China; Department of Gastroenterology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining 272000, China. Electronic address:
Background: Ulcerative colitis (UC) is a persistent chronic, non-specific inflammatory disease, and macrophages play a crucial role in its pathogenesis. Spleen tyrosine kinase (Syk) is strongly associated with the pathogenesis of several inflammatory diseases. However, the role of Syk in the pathogenesis of UC is still obscure.
View Article and Find Full Text PDFSTAR Protoc
January 2025
Gill Institute for Neuroscience, Program in Neuroscience, Department of Psychological and Brain Sciences Indiana University, Bloomington, IN 47405, USA. Electronic address:
Microscopic cell segmentation typically requires complex imaging, staining, and computational steps to achieve acceptable consistency. Here, we describe a protocol for the high-fidelity segmentation of the nucleus and cytoplasm in cell culture and apply it to monitor interferon-induced signal transducer and activator of transcription (STAT) signaling. We provide guidelines for sample preparation, image acquisition, and segmentation.
View Article and Find Full Text PDFLangmuir
January 2025
Department of Physics, Virginia Tech, Blacksburg, Virginia 24061, United States.
Lipid membranes form the primary structure of cell membranes and serve as configurable interfaces across numerous applications including biosensing technologies, antifungal treatments, and therapeutic platforms. Therefore, the modification of lipid membranes by additives has important consequences in both biological processes and practical applications. In this study, we investigated a nicotinic-acid-based gemini surfactant (NAGS) as a chemically tunable molecular additive for modulating the structure and phase behavior of liposomal membranes.
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