Related Experiment Video
Updated: Jun 30, 2026

Characterization of Cell Membrane Extensions and Studying Their Roles in Cancer Cell Adhesion Dynamics
Published on: March 26, 2018
Controlling cell surface dynamics and signaling: how CD82/KAI1 suppresses metastasis
1Laboratory of Integrin Signaling, Van Andel Research Institute, 333 Bostwick Ave NE, Grand Rapids, MI 49503, United States. cindy.miranti@vai.org
Abstract:
The recent identification of metastasis suppressor genes, uniquely responsible for negatively controlling cancer metastasis, are providing inroads into the molecular machinery involved in metastasis. While the normal function of a few of these genes is known; the molecular events associated with their loss that promotes tumor metastasis is largely not understood. KAI1/CD82, whose loss is associated with a wide variety of metastatic cancers, belongs to the tetraspanin family. Despite intense scrutiny, many aspects of how CD82 specifically functions as a metastasis suppressor and its role in normal biology remain to be determined. This review will focus on the molecular events associated with CD82 loss, the potential impact on signaling pathways that regulate cellular processes associated with metastasis, and its relationship with other metastasis suppressor genes.
Insights
Loss of metastasis suppressor genes, like KAI1/CD82, promotes cancer spread. Understanding the molecular events behind CD82 loss is crucial for developing new cancer metastasis therapies.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Metastasis Research
Background:
- Metastasis suppressor genes negatively regulate cancer metastasis.
- The molecular mechanisms underlying the loss of these genes and subsequent tumor metastasis are not well understood.
- KAI1/CD82, a tetraspanin family member, is implicated in various metastatic cancers, but its precise function and role in normal biology require further elucidation.
Purpose of the Study:
- To review the molecular events associated with the loss of KAI1/CD82.
- To explore the impact of CD82 loss on signaling pathways regulating metastasis.
- To examine the relationship between CD82 and other metastasis suppressor genes.
Main Methods:
- Literature review and synthesis of existing research on KAI1/CD82.
- Analysis of molecular events linked to CD82 loss.
- Investigation of signaling pathways affected by CD82.
Main Results:
- The loss of KAI1/CD82 is linked to increased cancer metastasis.
- CD82's function as a metastasis suppressor involves complex molecular events and signaling pathway alterations.
- CD82 interacts with other metastasis suppressor genes, suggesting a coordinated role in controlling cancer spread.
Conclusions:
- Further research into the molecular mechanisms of CD82 loss is essential for understanding and targeting cancer metastasis.
- Elucidating CD82's role in normal biology and its interactions with other suppressors can reveal novel therapeutic strategies.
- Targeting CD82 pathways may offer a promising approach to inhibit metastasis in various cancers.
More Related Videos
Related Concept Videos
Metastasis
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...
Mitogens and the Cell Cycle
Receptor Downregulation in MVBs
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR activation may...
Interactions Between Signaling Pathways
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Cell-surface Signaling
Inhibition of Cdk Activity

