Nanoparticle-Enhanced Radiotherapy for Cancer Treatment

Radiotherapy is a cornerstone of cancer management but remains constrained by the need to maximise tumour damage while sparing healthy tissues. Incorporation of nanoparticles into radiotherapy protocols addresses this challenge by exploiting the unique physical and chemical properties of materials at the nanoscale. High–atomic number nanoparticles amplify local energy deposition through enhanced photoelectric absorption, releasing secondary electrons that induce DNA damage within cancer cells. Complementary approaches employ catalytic surfaces to generate reactive oxygen species, further compromising tumour cell viability. Advances in nanoparticle design—ranging from surface functionalisation for active targeting to ultrasmall clusters that enable rapid renal clearance—have expanded the therapeutic window. Moreover, multifunctional agents now permit concurrent imaging and dose modulation, paving the way for real-time treatment adaptation. These innovations promise to improve outcomes across diverse solid tumours by enhancing the precision, efficacy and safety of radiotherapy.

Research from Nature Portfolio

Recent studies have integrated high-resolution imaging of intracellular gold nanoparticles with monochromatic X-ray sources to elucidate the mechanisms of radiosensitisation. This work has delivered the first quantitative models that reconcile measured biodistribution at the cellular level with both immediate DNA strand breaks and longer-term cell survival. By mapping energy deposition at nanoscale resolution, researchers have revealed that dual modelling approaches are necessary to capture the distinct biological endpoints of DNA damage and cytotoxicity. These insights refine our understanding of how nanoparticle‐mediated modulation of radiation fields translates into improved therapeutic indices.

Nanoparticle-Enhanced Radiotherapy for Cancer Treatment publication trend

The graph below shows the total number of articles in nanoparticle-enhanced radiotherapy for cancer treatment across all publications each year (not limited to Nature Index journals).

Technical terms

Nanoparticle: A particle sized 1–100 nm used to modify radiation dose deposition at the cellular scale.

Radiosensitisation: Enhancement of radiation-induced biological damage in target cells.

Photoelectric effect: Absorption of photons by high-atomic number atoms leading to emission of electrons and enhanced local dose.

Intratumoral biosynthesis: In situ formation of nanoparticles within tumour tissues from administered molecular precursors.

Biodistribution: The distribution of administered agents throughout the body and within specific tissues over time.

References

1. Intratumoral Biosynthesis of Gold Nanoclusters by Pancreatic Cancer to Overcome Delivery Barriers to Radiosensitization. ACS Nano (2024).
2. Atomically-precise Au22(Lys-Cys-Lys)16 nanoclusters for radiation sensitization. Journal of Nanobiotechnology (2025).
3. Prospects of nanoparticle-based radioenhancement for radiotherapy. Materials Horizons (2023).
4. Nanoparticle radio-enhancement: principles, progress and application to cancer treatment. Physics in Medicine and Biology (2018).