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Click chemistry-bas...
Click chemistry-based bioconjugation of iron oxide nanoparticles
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- Asad, Shno (author)
- Uppsala universitet,Institutionen för farmaci,Science for Life Laboratory, SciLifeLab,Molekylär galenisk farmaci
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- Ahl, David (author)
- Uppsala universitet,Integrativ Fysiologi,Science for Life Laboratory, SciLifeLab
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- Suárez-López, Yael del Carmen (author)
- Uppsala universitet,Science for Life Laboratory, SciLifeLab,Institutionen för farmaci
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- Erdélyi, Máté, 1975- (author)
- Uppsala universitet,Organisk kemi
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- Phillipson, Mia, 1973- (author)
- Uppsala universitet,Institutionen för medicinsk cellbiologi,Science for Life Laboratory, SciLifeLab
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- Teleki, Alexandra (author)
- Uppsala universitet,Institutionen för farmaci,Science for Life Laboratory, SciLifeLab
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(creator_code:org_t)
- English.
- Related links:
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https://urn.kb.se/re...
Abstract
Subject headings
Close
- Superparamagnetic iron oxide nanoparticles (SPIONs) exhibit unique properties for diverse biomedical applications, including drug delivery and diagnostic imaging. Actively targeted SPIONs enhance delivery to diseased sites, reducing side effects and enhancing treatment efficacy. However, development of reproducible functionalization protocols is challenged by the erratic behavior of nanoparticles in suspensions, such as agglomeration and sedimentation. In this study, we develop and systematically optimize a functionalization method to attach the Fc-region of antibodies onto silica coated SPIONs via click chemistry, ensuring controlled ligand orientation on the particle surface. The synthesis and successive modifications of silica coated SPIONs with organic moieties is presented resulting in the final click conjugation with anti-ICAM1 antibodies. These antibodies target ICAM1, upregulated on epithelial cell surfaces during gastrointestinal inflammation. Thermogravimetric analysis and infrared spectroscopy confirm successful SPION functionalization after each modification step. Cell viability assessment indicates no adverse effects of bioconjugated particles. Quantitative elemental analysis reveals significantly higher iron concentration in inflammation-induced Caco-2 cells exposed to ICAM1-modified particles compared to non-conjugated counterparts. Furthermore, laser scanning confocal microscopy of these cells suggests surface interaction and internalization of bioconjugated SPIONs, underscoring their potential for targeted imaging and therapy in inflammatory diseases.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Farmaceutiska vetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Pharmaceutical Sciences (hsv//eng)
Keyword
- inflammatory bowel disease
- diagnostics
- antibodies
- targeting
- gastrointestinal tract
- Farmaceutisk vetenskap
- Pharmaceutical Science
Publication and Content Type
- vet (subject category)
- ovr (subject category)
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