metastatic cancers in various cell lines such as lung cancer, scirrhous-type gastric cancer, hepatocellular carcinoma, acute lymphoblastic leukemia, and breast cancer. Suggesting based on the cancer CD9 can be a tumor suppressor or promotor. It has also been suggested that CD9 has an effect on the ability for cancer cells to develop chemoresistance. Additionally, CD9 has been shown to block adhesion of Staphylococcus aureus to wounds. The adhesion is essential for infection of the wound. This suggests that CD9 could be of possible use to as treatment for skin infection by Staphylococcus aureus. Interactions CD9 has been shown to interact with: CD117, CD29 CD46, CD49c, CD81, PTGFRN, TSPAN4. CD63 ADAM17 CD81 See also Tetraspanin Myogenesis Fertilisation References Further reading Cho, J.H., Kim, E., Son, Y. et al. (2020). CD9 induces cellular senescence and aggravates atherosclerotic plaque formation. Cell Death & Differentiation https://doi.org/10.1038/s41418-020-0537-9 External links