RESUMEN
Cancer cell heterogeneity (CCH) is crucial in understanding cancer progression and metastasis. The CCH is one of the stumbling blocks in modern medicine's therapeutics and diagnostics . An in-vitro model of co-culture systems of MCF-7, HeLa, HEK-293, with THP-1 cells showed the occurrence of EpCAM positive (EpCAM+) and EpCAM negative (EpCAM-) heterogenetic cancer cell types labeled with the Quantum Dot antibody conjugates (QDAb). This in-vitro model study could provide insights into the role of rare cancer cells manifestation and their heterogeneity in metastatic progression and risk for severe infections in these patients. We successfully report the presence of CCH based on the fluorescence ratios of the co-cultured cancer cells when treated with the QDAb. These short-term mimic co-cultures give a compelling and quite associated model for assessing early treatment responses in various cancers.
Asunto(s)
Inmunoconjugados , Neoplasias , Puntos Cuánticos , Técnicas de Cocultivo , Molécula de Adhesión Celular Epitelial/metabolismo , Células HEK293 , HumanosRESUMEN
Quantum dots (QD) with chemical composition QD CdSe / ZnS _ Ni 650 were successfully synthesized using a hydrothermal method and chemical precipitation. The nanocrystalline phase of the nanostructures was isolated and characterized using X-ray diffraction (XRD). The mean crystalline size doped core/shell Ni-dopant range was 9.0 ± 2.0 nm. The ferromagnetic data revealed the magnetic behaviour of QD CdSe / ZnS _ Ni 650 . The optical absorption measurements of these QDs were in the UV-visible light range 200-800 nm for a band gap value of 2.11 eV for QD CdSe / ZnS _ Ni 650 . This means that pure QD CdSe 650 and QD CdSe / ZnS _ Ni 650 underwent a redshift when compared with bulk CdSe. For QD CdSe / ZnS _ Ni 650 there was successful uptake by cell lines including HeLa and MCF-7 for bioimaging and sorting applications.