http://www.cnr.it/ontology/cnr/individuo/prodotto/ID48510
Synthesis of single-domain protein A-engineered magnetic nanoparticles: toward a universal strategy to site-specific labeling of antibodies for targeted detection of tumor cells. (Articolo in rivista)
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- Label
- Synthesis of single-domain protein A-engineered magnetic nanoparticles: toward a universal strategy to site-specific labeling of antibodies for targeted detection of tumor cells. (Articolo in rivista) (literal)
- Anno
- 2010-01-01T00:00:00+01:00 (literal)
- Alternative label
Mazzucchelli, S.; M. Colombo, M.; C. De Palma, C.; Verderio ,P.;. Coghi ,M. D; Clementi, E.; Tortora, P.; Corsi F.; Prosperi, D. (2010)
Synthesis of single-domain protein A-engineered magnetic nanoparticles: toward a universal strategy to site-specific labeling of antibodies for targeted detection of tumor cells.
in ACS nano
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Mazzucchelli, S.; M. Colombo, M.; C. De Palma, C.; Verderio ,P.;. Coghi ,M. D; Clementi, E.; Tortora, P.; Corsi F.; Prosperi, D. (literal)
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Dipartimento di Scienze Cliniche Luigi Sacco, Universita` di Milano, Ospedale L. Sacco, via G.B. Grassi 74, 20157 Milano, Italy (Mazzucchelli S.; Colombo, M.; De Palma, C.; Salvadè, A.; Verderio, P.; Clementi, E.; Corsi, F.)
Dipartimento di Biotecnologie e Bioscienze, Universita` di Milano-Bicocca, piazza della Scienza 2, 20126 Milano, Italy (Mazzucchelli, S.; Colombo, M.
Istituto Scientifico Eugenio Medea, 23842 Bosisio Parini, Italy (Clementi, E.)
Istituto di Scienze e Tecnologie Molecolari, CNR, via Fantoli 16/15, 20138 Milano, Italy (Prosperi, D.). (literal)
- Titolo
- Synthesis of single-domain protein A-engineered magnetic nanoparticles: toward a universal strategy to site-specific labeling of antibodies for targeted detection of tumor cells. (literal)
- Abstract
- Highly monodisperse magnetite nanocrystals (MNC) were synthesized in organic media and transferred to the water phase by ultrasound-assisted ligand exchange with an iminodiacetic phosphonate. The resulting biocompatible magnetic nanoparticles were characterized by transmission electron microscopy, dynamic light scattering, and magnetorelaxometry, indicating that this method allowed us to obtain stable particle
dispersions with narrow size distribution and unusually high magnetic resonance T2 contrast power. These nanoparticles were conjugated to a newly designed recombinant monodomain protein A variant, which exhibited
a convincingly strong affinity for human and rabbit IgG molecules. Owing to the nature of antibody-protein A binding, tight antibody immobilization occurred through the Fc fragment thus taking full advantage of the
targeting potential of bound IgGs. If necessary, monoclonal antibodies could be removed under controlled conditions regenerating the original IgG-conjugatable MNC. As a proof of concept of the utility of our paramagnetic
labeling system of human IgGs for biomedical applications, anti-HER-2 monoclonal antibody trastuzumab was immobilized on hybrid MNC (TMNC). TMNC were assessed by immunoprecipitation assay and confocal microscopy
effected on HER-2-overexpressing MCF-7 breast cancer cells, demonstrating excellent recognition capability and selectivity for the target membrane receptor. (literal)
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