Lps Localization
Lps Localization - Related Videos
08:51
Intraductal Injection of LPS as a Mouse Model of Mastitis: Signaling Visualized via an NF-κB Reporter Transgenic
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Cited by 14 •
2012
Described here is a technique in which lipopolysaccharide is injected into the lactating mouse mammary gland via the nipple to simulate mastitis, a condition commonly caused by bacterial infection. Lipopolysaccharide injection results in increased nuclear factor kappa B (NF-κB) signaling, visualized through bioluminescent imaging of an NF-κB luciferase reporter mouse.
13:13
Nano-fEM: Protein Localization Using Photo-activated Localization Microscopy and Electron Microscopy
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Cited by 14 •
2012
We describe a method to localize fluorescently tagged proteins in electron micrographs. Fluorescence is first localized using photo-activated localization microscopy on ultrathin sections. These images are then aligned to electron micrographs of the same section.
07:06
Visualizing RNA Localization in Xenopus Oocytes
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Cited by 5 •
2010
Visualization of in vivo RNA transport is accomplished by microinjection of fluorescently labeled RNA transcripts into Xenopus oocytes, followed by confocal microscopy.
06:12
LPS and ATP-induced Death of PMA-differentiated THP-1 Macrophages and its Validation
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Cited by 1 •
2024
This protocol is based on LPS and ATP-induced death of PMA-differentiated THP-1 macrophages. We use flow cytometry to analyze Annexin V and 7-AAD double staining to detect cell death, using the whole cell and employing scanning electron microscopy to observe the cell membrane morphology.
01:22
Local Attraction
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2025
Local attraction refers to disturbances in compass readings caused by magnetic influences from nearby objects such as metal fences, buried pipes, vehicles, buildings, power lines, or natural iron ore deposits. Small items like wristwatches, steel tools, or belt buckles can also interfere with the compass by creating local magnetic fields that distort the Earth's natural magnetic field. These distortions lead to inaccurate readings, posing navigation and land surveying challenges.Local...
FAQs
A signal at the bacterial surface, within host cells, or in surrounding tissue represents a different spatial relationship between the microbial envelope and the host. Comparing these locations can show whether LPS remains associated with bacteria, appears after release or transport, or reaches sites where host immune recognition occurs. The resulting map links bacterial positioning with inflammation and barrier disruption.
Fluorescent labels and antibodies support visual detection of LPS, allowing researchers to examine its position with microscopy. Biochemical fractionation instead separates cellular or tissue-associated portions for analysis with biochemical assays. Using these approaches addresses localization at different levels: imaging shows spatial distribution, whereas fractionation and analytical measurements help distinguish which separated component contains LPS.
LPS distribution can change as bacteria grow, so a localization pattern may reflect a changing bacterial envelope rather than a fixed arrangement. Tracking where LPS appears during growth can help distinguish surface-associated material from LPS that becomes released or transported. This comparison is relevant when relating bacterial envelope changes to host exposure and immune recognition.
Researchers first select an infection model or sample containing the bacteria and host material, then detect LPS with a fluorescent label, antibody, or biochemical method. Microscopy can identify signals at bacterial or host-associated sites, while fractionation and analytical assays assess separated material. Comparing these results helps determine whether LPS is surface-associated, intracellular, or present in surrounding tissue.
Microscopy is useful when the research question depends on spatial relationships, such as whether LPS remains at the bacterial surface, appears inside host cells, or accumulates in surrounding tissue. Fluorescent detection makes these locations visible within the studied model. The resulting images can connect bacterial positioning with sites of host immune recognition, inflammation, or barrier disruption.
Localization provides spatial context for interpreting host responses to Gram-negative bacteria. Identifying LPS at bacterial, intracellular, or tissue-associated sites helps researchers relate its distribution to innate immune signaling, inflammation, barrier disruption, and disease progression. It also supports analysis of how bacterial envelope changes, release, and transport may alter where immune recognition occurs during infection.