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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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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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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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Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
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Metabolic Interactions in the Tumor Microenvironment.

Costas A Lyssiotis1, Alec C Kimmelman2

  • 1Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI 48109, USA; Department of Internal Medicine, Division of Gastroenterology, University of Michigan Medical School, Ann Arbor, MI 48109, USA.

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Tumors reprogram cell metabolism to adapt to their environment. Understanding these metabolic interactions is key to developing new cancer therapies.

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Area of Science:

  • Oncology
  • Cancer Metabolism
  • Tumor Microenvironment

Background:

  • Tumors are complex ecosystems with diverse cell types.
  • Malignant cells adapt their metabolism to survive and grow.
  • Cellular interactions within the tumor microenvironment are crucial.

Purpose of the Study:

  • To review metabolic remodeling in the tumor microenvironment.
  • To explore how metabolism influences pathophysiologic interactions.
  • To highlight the role of heterocellular metabolic interactions in cancer.

Main Methods:

  • Literature review focusing on tumor metabolism and microenvironment.
  • Analysis of metabolic adaptations in cancer cells.
  • Examination of nutrient sharing, competition, and signaling.

Main Results:

  • Metabolic reprogramming is a key feature of tumor progression.
  • Interactions between cells in the tumor microenvironment are metabolically driven.
  • Metabolites act as signaling molecules influencing tumor behavior.

Conclusions:

  • Heterocellular metabolic interactions are repurposed from normal physiology to support tumors.
  • These metabolic processes are vital for tumor growth and development.
  • Targeting tumor metabolic pathways offers promising therapeutic strategies.