Royal College of Surgeons in Ireland
Richards et al_2019 editorial.pdf (1.8 MB)

Cleaved JAM-A - connecting cancer and vascular disease?

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journal contribution
posted on 2023-07-26, 08:31 authored by Catherine RichardsCatherine Richards, Emily J Rutherford, Ann HopkinsAnn Hopkins

Breast cancers that overexpress the human epidermal growth factor receptor-2 (HER2) are associated with aggressive disease and poor patient prognosis. Although several highly-effective HER2 targeted therapies have been developed, they are associated with a high incidence of de novo and acquired drug resistance in patients. Therefore there remains an ongoing need to elucidate mechanisms of resistance in order to establish effective treatments in drug-resistant patients. Proteins which operate upstream of, and regulate, HER2 expression are valid pharmacological targets in this setting. In recent years a correlation between the expression of Junctional Adhesion Molecule-A (JAM-A) and HER2 in breast cancers has been reported, in addition to expressional regulation of HER2 by JAM-A. JAM-A is a tight junction protein with important adhesive functions in multiple physiological barriers, but whose overexpression has also been linked with tumor progression in glioblastoma, gastric, lung and nasopharyngeal cancers, as well as an emerging role in cancer stem cell maintenance


Determining the contribution of junction adhesion molecule-A (JAM-A) to an invasive phenotype in breast cancer. | Funder: Science Foundation Ireland (SFI) | Grant ID: 08/RFP/NSC1427

Novel clinical roles for Junctional Adhesion Molecule-A in breast cancer progression and targeted therapy-associated morbidities | Funder: Beaumont Hospital Cancer Research Trust | Grant ID: N/A

Science Foundation Ireland (grant 13/IA/1994)



The original article is available at

Published Citation

Richards CE, Rutherford EJ, Hopkins AM. Cleaved JAM-A - connecting cancer and vascular disease? Oncotarget. 2019;10(39):3831-3832.

Publication Date

11 June 2019

PubMed ID



  • Molecular Medicine
  • Surgery
  • Beaumont Hospital

Research Area

  • Cancer


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