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Université de Fribourg

Fragment N2, a caspase-3-generated RasGAP fragment, inhibits breast cancer metastatic progression

Barras, David ; Lorusso, Girieca ; Lhermitte, Benoît ; Viertl, David ; Rüegg, Curzio ; Widmann, Christian

In: International Journal of Cancer, 2014, p. -

The p120 RasGAP protein negatively regulates Ras via its GAP domain. RasGAP carries several other domains that modulate several signaling molecules such as Rho. RasGAP is also a caspase-3 substrate. One of the caspase-3-generated RasGAP fragments, corresponding to amino acids 158–455 and called fragment N2, was previously reported to specifically sensitize cancer cells to death induced by...

Université de Fribourg

Identification of MAGI1 as a tumor-suppressor protein induced by cyclooxygenase-2 inhibitors in colorectal cancer cells

Zaric, J. ; Joseph, J.-M. ; Tercier, S. ; Sengstag, T. ; Ponsonnet, L. ; Delorenzi, M. ; Rüegg, Curzio

In: Oncogene, 2012, vol. 31, p. 48-59

Cyclooxyganase-2 (COX-2), a rate-limiting enzyme in the prostaglandin synthesis pathway, is overexpressed in many cancers and contributes to cancer progression through tumor cell-autonomous and paracrine effects. Regular use of non-steroidal anti-inflammatory drugs or selective COX-2 inhibitors (COXIBs) reduces the risk of cancer development and progression, in particular of the colon. The COXIB...