Cited by 7Radiation Therapy and DosimetryEffects of Radiation ExposureAdvanced Radiotherapy Techniques

Advancing cancer radiotherapy: Harnessing radiosensitizers and nanotechnology for enhanced tumor control

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Shiridokht, Fatemeh, Kehtari, Parniya, Eskandani, Morteza, Farajollahi, Alireza, Vandghanooni, Somayeh·2025·International Journal of Pharmaceutics: X

Abstract

Cancer affects millions of individuals annually, with radiotherapy playing a crucial role in the treatment of over 70% of cases. Nevertheless, the effectiveness of radiotherapy is frequently limited by tumor radioresistance and the associated toxicity to normal tissues. Radiosensitizers enhance tumor sensitivity to ionizing radiation, optimizing doses and reducing damage. This review evaluates diverse radiosensitizers, including natural compounds (curcumin, resveratrol), chemotherapeutics (cisplatin, doxorubicin), and high-Z nanoparticles (gold, hafnium), which amplify DNA damage and ROS production. Advanced nanocarriers-carbon-, lipid-, and polymer-based-improve targeted delivery, specificity, and bioavailability. Various molecular mechanisms involving proteins such as p53, PARP1, miRNAs (miR-21, miR-155), and siRNAs are discussed in relation to their roles in modulating cell cycle progression, apoptosis, and gene expression to overcome resistance. Radioprotectors like antioxidants and amifostine safeguard normal tissues. Ongoing trials with hafnium oxide and cisplatin regimens show promise. Key findings highlight nanotechnology's role in enhancing radiosensitization via dose enhancement factors and synergistic therapies. Implications include personalized treatments tailored to tumor biology, the reduction of radioresistance through precision medicine and data-driven strategies, and ultimately, the improvement of radiotherapy efficacy and patient outcomes.

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Crossref · 10.1016/j.ijpx.2025.100419

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  • Early studies predominantly focused on high-atomic-number materials, including gold, silver, gadolinium, and hafnium-based nanoparticles, with the primary objective of maximizing radiation energy deposition and secondary electron generation.

    “Early studies predominantly focused on high-atomic-number (high-Z) materials, including gold, silver, gadolinium, and hafnium-based nanoparticles, with the primary objective of maximizing radiation energy deposition and secondary electron generation [9,85,95,96].”

    From Nanoparticle-Mediated Radiosensitization in Breast Cancer: A Systematic Review of Preclinical Evidence and Translational Challenges (2026) · cites this paper as [96]

    Split into 2 atoms — 0 confirmed, 2 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

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  • Across included studies, nanoparticle-assisted radiotherapy was frequently associated with enhanced therapeutic activity compared with radiotherapy alone, including reduced cell viability, decreased clonogenic survival, increased apoptosis, enhanced DNA damage, delayed tumor growth, and in selected studies improved survival.

    “Across the included studies, nanoparticle-assisted radiotherapy was frequently associated with enhanced therapeutic activity compared with radiotherapy alone, including reduced cell viability, decreased clonogenic survival, increased apoptosis, enhanced DNA damage, delayed tumor growth, and, in selected studies, improved survival outcomes [14,23,26,87,96,104,105].”

    From Nanoparticle-Mediated Radiosensitization in Breast Cancer: A Systematic Review of Preclinical Evidence and Translational Challenges (2026) · cites this paper as [96]

    Split into 2 atoms — 1 confirmed, 1 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

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  • Clinical development of combinatorial nanoplatforms is challenged by issues related to reproducibility, manufacturing consistency, regulatory approval, scalability, and long-term safety.

    “Although these combinatorial systems often demonstrate enhanced efficacy experimentally, their clinical development is challenged by issues related to reproducibility, manufacturing consistency, regulatory approval, scalability, and long-term safety [25,96,97].”

    From Nanoparticle-Mediated Radiosensitization in Breast Cancer: A Systematic Review of Preclinical Evidence and Translational Challenges (2026) · cites this paper as [96]

    The Conclusion and future perspective section identifies batch-to-batch inconsistency, production scalability, and limited long-term toxicity data as barriers to clinical translation. The Limitations of current radiosensitizer strategies section also calls for standardized manufacturing protocols. These passages support most of the claim, but our copy does not identify regulatory approval as a challenge. (LLM, conf=0.86)

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Cited by

Sorted by citations

Authors
Shiridokht, F., Kehtari, P., Eskandani, M., Farajollahi, A., & Vandghanooni, S.
Affiliations
Tabriz University of Medical Sciences (IR)
Corresponding author
Vandghanooni, Somayeh
Venue
International Journal of Pharmaceutics: X
Publisher
Elsevier BV
Published
2025-12
Volume
10
Pages
100419
ISSN
2590-1567 (ISSN-L)
OpenAlex
W4415958691
Cited by
4
References
215
Citations by year
2026: 4
FWCI
0.70
Type
journal article
Language
en
Open access
Locations
  • International Journal of Pharmaceutics X (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
Tabriz University of Medical Sciences
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Radiation Therapy and Dosimetry
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Effects of Radiation Exposure
  • Physical Sciences › Physics and Astronomy › Radiation › Advanced Radiotherapy Techniques
Keywords
cancer radiotherapy, radiosensitizers, tumor radioresistance, nanocarriers, high-Z nanoparticles, gold nanoparticles, hafnium oxide nanoparticles, cisplatin, curcumin, resveratrol, reactive oxygen species, DNA damage, p53, PARP1, microRNA, siRNA, radiosensitization, radiotherapy toxicity, antioxidants, amifostine, targeted drug delivery, precision medicine

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