Single particle inductively coupled plasma mass spectrometry imaging of immunochemically labeled spheroid sections

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F23%3A00134084" target="_blank" >RIV/00216224:14310/23:00134084 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Single particle inductively coupled plasma mass spectrometry imaging of immunochemically labeled spheroid sections

Popis výsledku v původním jazyce

Spheroids are one of the 3D biological models in which the arrangement of proliferating and necrotic cells resembles the tumor microenvironment. One of the markers of proliferation is Ki-67 protein, which is expressed by cells in the active phase of the cell cycle. Immunohistochemical labeling with a primary antibody and a fluorophore-labeled secondary antibody followed by fluorescence microscopy analysis is commonly employed for two- and three-dimensional imaging of the target protein in spheroid sections. We have successfully switched from fluorophore labeling of Ki-67 to nanoparticle labeling combined with LA ICP MS.* Recently, gold nanoparticles were used as very sensitive immunochemical tags in conventional UV laser ablation ICP MSI.1,2 In our approach, intact 20 nm gold nanoparticles tags were desorbed from the spheroid section with 2 940 nm laser ablation system.

Název v anglickém jazyce

Single particle inductively coupled plasma mass spectrometry imaging of immunochemically labeled spheroid sections

Popis výsledku anglicky

Spheroids are one of the 3D biological models in which the arrangement of proliferating and necrotic cells resembles the tumor microenvironment. One of the markers of proliferation is Ki-67 protein, which is expressed by cells in the active phase of the cell cycle. Immunohistochemical labeling with a primary antibody and a fluorophore-labeled secondary antibody followed by fluorescence microscopy analysis is commonly employed for two- and three-dimensional imaging of the target protein in spheroid sections. We have successfully switched from fluorophore labeling of Ki-67 to nanoparticle labeling combined with LA ICP MS.* Recently, gold nanoparticles were used as very sensitive immunochemical tags in conventional UV laser ablation ICP MSI.1,2 In our approach, intact 20 nm gold nanoparticles tags were desorbed from the spheroid section with 2 940 nm laser ablation system.

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

<a href="/cs/project/GA21-12262S" target="_blank" >GA21-12262S: Nanočásticové sondy pro zobrazovací hmotnostní spektrometrii</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů