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Related Concept Videos

Tumor Immunotherapy01:27

Tumor Immunotherapy

955
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
955
Cancer Vaccines01:30

Cancer Vaccines

726
Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
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Updated: Nov 30, 2025

Evaluation of the In vivo Antitumor Activity of Polyanhydride IL-1α Nanoparticles
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Localized Interleukin-12 for Cancer Immunotherapy.

Khue G Nguyen1, Maura R Vrabel1, Siena M Mantooth1

  • 1Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill and North Carolina State University, Raleigh, NC, United States.

Frontiers in Immunology
|November 12, 2020
PubMed
Summary

Localized delivery systems are reviving Interleukin-12 (IL-12) cancer immunotherapy. These strategies maximize IL-12 in tumors, reducing toxicities and enhancing antitumor immunity for potential clinical application.

Keywords:
cancer immunotherapycancer vaccinecytokine delivery systeminterleukin-12 (IL-12)intratumoral administrationlocalized delivery

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Area of Science:

  • Immunology
  • Oncology
  • Biotechnology

Background:

  • Interleukin-12 (IL-12) is a potent pro-inflammatory cytokine with demonstrated antitumor efficacy in preclinical cancer models.
  • Systemic IL-12 delivery faced dose-limiting toxicities in early human trials, hindering its clinical translation.
  • IL-12's ability to engage multiple effector mechanisms and reverse tumor-induced immunosuppression remains a key focus for cancer immunotherapy.

Purpose of the Study:

  • To review the historical context of IL-12 as a cancer immunotherapy.
  • To explore diverse localized delivery strategies for IL-12-based cancer therapies.
  • To discuss the advantages, limitations, and future perspectives of IL-12 delivery systems.

Main Methods:

  • Literature review of IL-12 immunotherapy, focusing on preclinical and clinical studies.
  • Analysis of various IL-12 delivery systems, including immunocytokine fusions and nanoparticles.
  • Evaluation of localized delivery approaches and their impact on efficacy and toxicity.

Main Results:

  • Localized IL-12 delivery systems have shown robust antitumor immunity with reduced adverse events in preclinical studies.
  • Several localized IL-12 delivery strategies have advanced to clinical trials.
  • These localized approaches are enabling a resurgence in IL-12's therapeutic potential.

Conclusions:

  • Localized delivery is crucial for maximizing IL-12's therapeutic index in cancer treatment.
  • Advances in delivery technologies are overcoming previous toxicity challenges associated with IL-12.
  • IL-12-based immunotherapies delivered locally hold significant promise for future clinical application.