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Related Concept Videos

Cytotoxic T Cells-mediated Immune Response01:27

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The extrinsic apoptotic pathway is initiated when extracellular death-inducing signals, such as specific cytokines, activate the death receptors expressed on the cell surface. The immune cells involved in this pathway are natural killer cells (NK cells) and cytotoxic T-lymphocytes. NK cells are critical in innate immune response, while cytotoxic T-lymphocytes are associated with adaptive immune response. These cells recognize specific receptors expressed on the altered cells and activate...
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Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
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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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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 innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
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Local Drug Delivery Techniques for Triggering Immunogenic Cell Death.

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Local drug delivery systems offer a safer alternative for cancer immunotherapy by enhancing immunogenic cell death (ICD) inducers. These systems improve drug retention and efficacy while minimizing systemic toxicity.

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Area of Science:

  • Oncology
  • Immunology
  • Biomaterials Science

Background:

  • Immunogenic cell death (ICD) is a cellular process that triggers adaptive immune responses crucial for cancer immunotherapy.
  • Current ICD inducers, often delivered intravenously, face limitations due to potential systemic toxicity.
  • Local drug delivery systems present a promising alternative to overcome these limitations.

Purpose of the Study:

  • To provide an overview of local drug delivery techniques for immunogenic cell death (ICD) inducers.
  • To explain how local delivery enhances therapeutic capabilities and circumvents systemic toxicity.
  • To discuss the complexities, pitfalls, and opportunities of local drug delivery in cancer immunotherapy.

Main Methods:

  • Review of existing literature on local drug delivery systems for ICD inducers.
  • Analysis of historical context and prominent examples of local administration of ICD inducers.
  • Discussion of the advantages and challenges associated with local drug delivery strategies.

Main Results:

  • Local drug delivery systems can prolong drug retention at tumor sites.
  • These systems effectively sequester drugs, overcome biological barriers, and optimize therapeutic efficacy.
  • Local administration minimizes systemic side effects, enhancing patient safety and bio-safety.

Conclusions:

  • Local drug delivery represents a significant advancement in cancer immunotherapy by improving ICD inducer efficacy and safety.
  • These techniques offer a viable strategy to enhance anti-tumor immune responses while mitigating off-target toxicities.
  • Further research into local drug delivery holds substantial promise for optimizing cancer treatment outcomes.