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Nanotheranostics 2023; 7(3):316-326. doi:10.7150/ntno.82978 This issue Cite

Research Paper

Preclinical safety assessment of photoluminescent metal quantum clusters stabilized with autologous serum proteins for host specific theranostics

Kritika Sood¹, Pranjali Yadav¹, Manu Jamwal², Reena Das², Asifkhan Shanavas^{1 ✉}

1. Inorganic and Organic Nanomedicine Lab, Chemical Biology Unit, Institute of Nano Science and Technology, Sector-81, Mohali, Punjab, 140306, India
2. Department of Haematology, Post Graduate Institute of Medical Education and Research (PGIMER), Madhya Marg, Sector 12, Chandigarh, 160012, India

✉ Corresponding author: asifkhanac.in

Abstract

Host derived serum proteome stabilised red-emitting gold quantum clusters (or Au-QC-NanoSera or QCNS) of size range ~2 nm have been synthesised in a first reported study. The host serum was taken from bovine, murine and human origins to establish the proof of concept. In-vitro biocompatibility with normal murine L929 fibroblast cells and radiosensitisation ability against PLC/PRF/5 hepatoma cells was established. A concentration dependant radiosensitisation effect of QCNS at differential γ-radiation doses was observed with almost 90% killing of cancer cells at a radiation dose of 5Gy. Acute and subacute safety, and non-immunogenicity of autologously derived QCNS was established in in-bred C57BL/6 mice. The biodistribution analysis revealed that the QCNS were effectively cleared from the body over a course of 28 days and were found to pose no major threat to the proper functioning and morphology of the mice.

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