JAM-A and Breast Cancer: How It Affects Tumor Growth and Apoptosis
Author Information
Author(s): Murakami Masato, Giampietro Costanza, Giannotta Monica, Corada Monica, Torselli Ilaria, Orsenigo Fabrizio, Cocito Andrea, d'Ario Giovanni, Mazzarol Giovanni, Confalonieri Stefano, Di Fiore Pier Paolo, Dejana Elisabetta
Primary Institution: IFOM, Foundation FIRC Institute of Molecular Oncology, Milan, Italy
Hypothesis
Does the expression of Junctional Adhesion Molecule-A (JAM-A) influence breast cancer progression and apoptosis?
Conclusion
Downregulation of JAM-A reduces tumor aggressive behavior by increasing cell susceptibility to apoptosis.
Supporting Evidence
- JAM-A null mice developed significantly smaller mammary tumors than JAM-A positive mice.
- JAM-A expression correlates with poor prognosis in breast cancer patients.
- Absence of JAM-A increased tumor cell apoptosis in breast cancer models.
- Blocking JAM-A in cultured tumor cells led to increased cell death.
Takeaway
JAM-A is a protein that helps cancer cells survive, and when it's not there, the cancer cells are more likely to die and the tumors grow slower.
Methodology
The study used a combination of genetic mouse models and human tissue microarray analysis to assess the role of JAM-A in breast cancer.
Potential Biases
Potential biases in patient selection and data interpretation in the clinical analysis.
Limitations
The study primarily focuses on mouse models and may not fully translate to human biology.
Participant Demographics
The study analyzed 444 breast cancer patients, but specific demographics were not detailed.
Statistical Information
P-Value
p<0.0048
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website