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Theranostics of folic acid conjugated cu on Te nanocomposite: Fluorescence sensing, imaging and selective cytotoxicity towards HeLa cells

Das, Debashree, Bhattacharya, Sampurna, Basu, Shalmali, Das, Saptydeep, Das, Ujjal, Morgan, David J. ORCID: https://orcid.org/0000-0002-6571-5731 and Sen, Kamalika 2026. Theranostics of folic acid conjugated cu on Te nanocomposite: Fluorescence sensing, imaging and selective cytotoxicity towards HeLa cells. Inorganica Chimica Acta 594 , 123076. 10.1016/j.ica.2026.123076

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Abstract

A novel folic acid-conjugated composite nanoparticle containing Cu on TeO2 (FA-NC) was developed via a green synthetic route for targeted cancer theranostics. The nanocomposite exhibited strong fluorescence, enabling sensitive detection of folate receptor-positive HeLa cells with a detection limit of 1.82 × 103 cells/mL. XPS analyses confirmed the transformation of Cu2+ to Cu0, and successful surface modification with folic acid was confirmed using Raman spectroscopy. The nanocomposite demonstrated selective imaging of HeLa cells over HaCaT cells, confirming receptor-specific targeting. Furthermore, FA-NC exhibited antiproliferative activity towards HeLa cells with an IC50 of 15 μg/mL. A moderate DNA binding affinity (Kd = 69.2 μM) suggested groove-binding interaction. These results highlight FA-NC as a cost-effective, biocompatible, and dual-functional nanomaterial for simultaneous imaging and therapy of folate receptor-positive cancer cells.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Schools > Chemistry
Additional Information: RRS policy applied
Publisher: Elsevier BV
ISSN: 0020-1693
Date of First Compliant Deposit: 23 January 2026
Date of Acceptance: 9 January 2026
Last Modified: 26 Jan 2026 11:30
URI: https://orca.cardiff.ac.uk/id/eprint/183987

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