Dual Roles of METCAM in the Progression of Different Cancers

Guang-Jer Wu1

  • 1Department of Microbiology and Immunology, Emory University, School of Medicine, Atlanta, GA 30322, USA.

Insights

The cell adhesion molecule METCAM has a dual role in cancer progression, sometimes promoting malignancy and other times suppressing it. Its function in tumors depends on cancer cell and microenvironment factors.

Area of Science:

  • Molecular biology
  • Cell biology
  • Cancer research

Background:

  • The immunoglobulin superfamily cell adhesion molecule METCAM mediates cell-cell and cell-extracellular interactions.
  • METCAM is expressed in normal tissues and its aberrant expression is linked to epithelial tumor progression.

Purpose of the Study:

  • To investigate the dual role of METCAM in tumor progression.
  • To explore the mechanisms underlying METCAM's function in cancer development and metastasis.

Main Methods:

  • In vitro and in vivo studies were conducted.
  • Analysis of METCAM's interactions with intracellular signaling pathways.
  • Examination of METCAM's role in tumor development and metastasis.

Main Results:

  • METCAM exhibits a dual role, promoting malignant progression in some cancers and suppressing it in others.
  • METCAM's function appears to be modulated by intrinsic factors within cancer cells and the stromal microenvironment.

Conclusions:

  • METCAM's role in cancer is context-dependent.
  • Further research into the mechanisms of METCAM in tumor progression and metastasis is warranted.

Related Concept Videos

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...
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...
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
Cancer Therapies02:49

Cancer Therapies

Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
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,...
Cancer Stem Cells and Tumor Maintenance02:40

Cancer Stem Cells and Tumor Maintenance

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...