Gold Nanoparticles- Boon in Cancer Theranostics

Area of Science:

• Nanotechnology
• Oncology
• Materials Science

Background:

• Cancer is a leading global cause of death, driven by genetic and environmental factors leading to uncontrolled cell growth.
• Conventional chemotherapy, while effective, causes widespread cytotoxic effects due to its impact on rapidly dividing cells.
• There is a critical need for more targeted and less toxic cancer treatment modalities.

Purpose of the Study:

• To review the advancements in gold nanoparticle (AuNP) applications for cancer therapy.
• To explore the diagnostic and therapeutic potential of AuNPs in nanotechnology-based cancer treatment.
• To discuss various types of AuNPs and their specific roles in photothermal therapy (PTT).

Main Methods:

• Review of current literature on metal nanoparticles (NPs) in cancer therapy.
• Focus on gold nanoparticles (AuNPs) as a newer class of therapeutic agents.
• Analysis of AuNP properties, including drug delivery, targeting, gene silencing, and imaging capabilities.

Main Results:

• Metal NPs, particularly AuNPs, demonstrate advantages over conventional chemotherapy, including reduced adverse drug reactions.
• AuNPs facilitate targeted drug delivery, enhanced tumor imaging, and controlled energy deposition.
• Various AuNP structures (nanorods, nanoshells, nanospheres, nanocages, nanostars) show potential in photothermal therapy.

Conclusions:

• Gold nanoparticles represent a significant advancement in cancer therapeutics, offering targeted treatment strategies.
• The development of AuNP-based therapies is progressing towards early-stage clinical trials.
• AuNPs are versatile agents with applications in diagnosis, drug delivery, radiosensitization, and photothermal therapy.