Analysis of folate and curcumin-conjugated cadmium sulfide cystein quantum dots for targeted cancer therapy.

The aim of this study was to develop the ranostic nanocomposite by conjugating quantum dots with functional, therapeutic and targeting moieties. The quantum dots nanoparticles were used to diagnose and deliver anti-tumor drugs in a controlled manner to cancerous cells by fusing with tumor cell surfaces. To enhance the attachment of the nano-composite to specific tumor cells without harming neighboring normal cells, folic acid was conjugated with the nano-composite as folate receptors are over expressed in different kinds of tumors. The study was conducted for one year at the University of Punjab. The quantum dots were synthesized by a hydrothermal process using cadmium acetate and sodium sulfide. The response was evaluated on breast tumor samples for binding and nano-composite delivery under a fluorescent microscope. Fourier-transform infrared analysis was performed to confirm CdS conjugation with cysteine, folic acid and curcumin. The results showed that the quantum dot conjugate provides a two-way attack on cancer cells and causes increased cellular apoptosis. Further testing on murine animal models is required to confirm the results of this research study.