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Related Concept Videos

Tumor Immunotherapy01:27

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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Cancer Stem Cells and Tumor Maintenance02:40

Cancer Stem Cells and Tumor Maintenance

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Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
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Cancer Vaccines01:30

Cancer Vaccines

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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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Stem Cell Therapy for Tissue Regeneration01:21

Stem Cell Therapy for Tissue Regeneration

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Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell...
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The Tumor Microenvironment02:17

The Tumor Microenvironment

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Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
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Distinctive Features of Adult Stem Cells vs Cancer Stem Cells01:18

Distinctive Features of Adult Stem Cells vs Cancer Stem Cells

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A stem cell is an unspecialized cell that can divide without limit as needed and can, under specific conditions, differentiate into specialized cells.
Adult stem cells
Adult stem cells are tissue-specific; hence, they divide to develop the tissue from which they originate. One type of adult stem cell is the epithelial stem cell, which gives rise to the keratinocytes in the multiple layers of epithelial cells in the epidermis of the skin. Adult bone marrow has three distinct types of stem cells:...
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Generation of a Novel Dendritic-cell Vaccine Using Melanoma and Squamous Cancer Stem Cells
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The missing link between cancer stem cells and immunotherapy.

Lobna Safwat Ali1, Youssef A M Attia2, Sohaila Mourad3

  • 1Department of Pharmacology and Toxicology, Faculty of Pharmacy, Fayoum University, Fayoum, Egypt.

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Cancer stem cells (CSCs) drive tumor growth and resist treatment. The tumor microenvironment (TME) protects CSCs, necessitating novel immunotherapies targeting CSCs and their TME interactions for better cancer treatment outcomes.

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Area of Science:

  • Oncology
  • Cancer Biology
  • Immunology

Background:

  • Cancer stem cells (CSCs) possess self-renewal and tumor-initiation capabilities.
  • CSCs contribute to tumor heterogeneity, differentiation, and resistance to therapies.
  • Specific biomarkers (e.g., CD44, CD133) identify CSC populations within tumors.

Purpose of the Study:

  • To review the protective role of the tumor microenvironment (TME) in shielding cancer stem cells (CSCs).
  • To explore CSC interactions with TME components and their influence on immune evasion and therapy resistance.
  • To discuss current and emerging immunotherapeutic strategies targeting CSCs.

Main Methods:

  • Review of existing literature on CSCs, TME, and cancer immunology.
  • Analysis of signaling pathways regulating CSC plasticity (e.g., IGF-II/IGF1R, FAK, c-Met).
  • Discussion of technologies for CSC identification and limitations across various cancer types.

Main Results:

  • The TME, including CAFs and immune cells, actively protects CSCs from host immunity and therapies.
  • Specific signaling pathways mediate CSC plasticity and interaction with the TME.
  • Various methods exist for CSC identification, but each has limitations.

Conclusions:

  • Understanding TME-CSC interactions is crucial for developing effective cancer treatments.
  • Targeting CSCs and modulating the TME offers promising avenues for cancer immunotherapy.
  • Further research is needed to overcome CSC-mediated therapy resistance.