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Related Concept Videos

Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

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.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

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.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Tumor Progression02:07

Tumor Progression

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.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Tumor Progression02:07

Tumor Progression

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.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Metastasis02:30

Metastasis

Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
Cancer02:18

Cancer

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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Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
08:34

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

Published on: February 6, 2019

Protons make tumor cells move like clockwork.

Christian Stock1, Albrecht Schwab

  • 1Institut für Physiologie II, University of Münster, Robert-Koch-Str. 27b, 48149, Münster, Germany. cmstock@uni-muenster.de

Pflugers Archiv : European Journal of Physiology
|May 14, 2009
PubMed
Summary
This summary is machine-generated.

Tumor cell migration, crucial for metastasis, relies on maintaining stable intracellular pH. This review explores how the acidic tumor microenvironment, driven by specific transporters and enzymes, influences cancer cell movement and metastasis.

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Area of Science:

  • Oncology
  • Cell Biology
  • Biochemistry

Background:

  • Cancer metastasis is a leading cause of cancer-related deaths worldwide.
  • Tumor cell migration is a key factor in metastasis and is influenced by cellular pH.
  • The tumor microenvironment's pH plays a critical role in regulating cancer cell behavior.

Purpose of the Study:

  • To review the mechanisms by which the acidic tumor microenvironment controls tumor cell migration.
  • To highlight the role of pH regulators, such as transporters and carbonic anhydrases, in cancer metastasis.
  • To identify potential therapeutic targets for anticancer strategies.

Main Methods:

  • Review of existing literature on tumor cell migration, pH regulation, and metastasis.
  • Analysis of the roles of specific ion and water transporters (e.g., NHE1, MCT1, MCT4) and carbonic anhydrase isozymes (e.g., CA IX).
  • Discussion of the impact of hypoxia and glycolysis on pH regulation in solid tumors.

Main Results:

  • Tumor cell migration is dependent on intracellular and extracellular pH homeostasis.
  • Overexpression of NHE1, MCT1/MCT4, and CA IX in solid tumors leads to extracellular acidification.
  • This acidic tumor microenvironment is crucial for regulating tumor cell migration and potentially metastasis.

Conclusions:

  • The characteristic acidic tumor microenvironment is a critical regulator of tumor cell migration.
  • Targeting pH-regulating transporters and enzymes (NHE1, MCTs, CA IX) presents a promising therapeutic strategy against cancer metastasis.
  • Understanding pH dynamics in tumors is essential for developing effective anticancer treatments.