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Related Concept Videos

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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Tumor Progression02:07

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Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
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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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Cancer02:18

Cancer

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Cancers arise due to mutations in genes involved in the regulation of cell division, which leads to unrestricted cell proliferation. Modern science and medicine have made great strides in the understanding and treatment of cancer, including eradicating cancer in some patients. However, there is still no cure for cancer. This is largely due to the fact that cancer is a large group of many diseases.
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Adaptive Mechanisms in Cancer Cells

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Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
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Author Spotlight: Establishment of Pancreatic Cancer-Derived Tumor Organoids and Fibroblasts From Fresh Tissue
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Normalization in tumor ecosystem: Opportunities and challenges.

Keywan Mortezaee1

  • 1Department of Anatomy, School of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran.

Cell Biology International
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Summary
This summary is machine-generated.

Restoring normal tumor microenvironment balance, including vascular normalization and metabolic modulation, is key to overcoming cancer therapy resistance and preventing recurrence. This approach aims for durable anti-cancer effects.

Keywords:
cancer-associated fibroblastextracellular matrixheterogeneityhypoxiaimmunitynormalizationradiotherapyresistancestromatransforming growth factortumor metabolismtumor microenvironmentvascular endothelial growth factorvasculature

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Area of Science:

  • Oncology
  • Cancer Biology
  • Tumor Microenvironment Research

Background:

  • Cancer therapy faces challenges due to abnormal tumor stroma, including nutrient/oxygen distribution, immune cell positioning, fibroblast activity, and disorganized vasculature.
  • Tumor resistance is an adaptive response to this imbalanced ecosystem, hindering treatment efficacy and promoting metastasis.

Purpose of the Study:

  • To identify key strategies for reversing abnormalities within the tumor stroma.
  • To establish a foundation for achieving durable cancer treatment outcomes and reducing recurrence.

Main Methods:

  • The study reviews current research on tumor microenvironment characteristics and their impact on cancer therapy.
  • It focuses on identifying and proposing interventions to normalize the tumor ecosystem.

Main Results:

  • Abnormalities in oxygen, nutrient, immune cell distribution, extracellular matrix, and vasculature characterize the tumor stroma.
  • Cancer resistance is linked to these ecosystem imbalances.

Conclusions:

  • Restoring normal tumor stroma status is crucial for effective cancer therapy.
  • Strategies include vascular normalization, metabolic modulation (e.g., glucose delivery), balancing cellular dispersion, and regulating pH and oxygen levels.