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Tumor Immunotherapy

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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.
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Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
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Drug delivery methods like oral inhalation, nasal sprays, transdermal patches, eye drops, intravitreal injection,  and rectal administration provide localized effects with reduced toxicity.
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The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
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Targeted immunomodulation for chronic diseases through advanced delivery platforms.

Mia Girela1,2, Dia Gupta1,2, Alessandro Grattoni1,3,4

  • 1Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX, USA.

Expert Opinion on Drug Delivery
|October 27, 2025
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Controlled drug delivery systems offer targeted immunomodulation for chronic diseases, enhancing efficacy and reducing side effects. These advanced platforms enable precise immune responses for conditions like autoimmunity, infection, cancer, and transplantation.

Keywords:
Controlled drug deliveryImmune tolerance inductionImplantable drug-delivery systemsLocalized immunomodulationNanoparticles for immunotherapy

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Area of Science:

  • Immunology
  • Biomedical Engineering
  • Drug Delivery Systems

Background:

  • Conventional systemic immunotherapies face challenges with toxicity and relapse.
  • Controlled drug delivery systems offer localized and sustained immune response modulation.
  • These systems are crucial for managing chronic immune-related diseases.

Purpose of the Study:

  • To review current strategies in controlled drug delivery for immunomodulation.
  • To explore applications in immune suppression, activation, and tolerance.
  • To discuss emerging technologies and translational challenges.

Main Methods:

  • Review of nanoparticles, microparticles, hydrogels, and implant technologies.
  • Analysis of controlled release mechanisms for targeted immune effects.
  • Exploration of precision immunoengineering and CRISPR technologies.

Main Results:

  • Controlled delivery systems enable precise spatial and temporal immune modulation.
  • Applications include protecting transplants, inducing tolerance in autoimmunity, and enhancing cancer immunotherapy and vaccines.
  • Emerging frontiers in precision immunoengineering are discussed.

Conclusions:

  • Controlled delivery platforms offer a versatile framework for personalized immune modulation.
  • These systems have the potential to significantly improve long-term outcomes in immunotherapy.
  • Addressing translational and regulatory hurdles is key for clinical implementation.