AUTHOR=Freije Jose M., Fraile Julia M., Lopez-Otin Carlos TITLE=Protease Addiction and Synthetic Lethality in Cancer JOURNAL=Frontiers in Oncology VOLUME=1 YEAR=2011 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2011.00025 DOI=10.3389/fonc.2011.00025 ISSN=2234-943X ABSTRACT=

The “oncogene addiction” concept refers to the dependence of cancer cells on the function of the oncogenes responsible for their transformed phenotype, while the term “non-oncogene addiction” has been introduced to define the exacerbated necessity of the normal function of non-mutated genes. In this Perspective, we focus on the importance of proteolytic enzymes to maintain the viability of cancer cells and hypothesize that most, if not all, tumors present “addiction” to a number of proteolytic activities, which in turn may represent valuable targets of anti-cancer therapies, even without being mutated or over-expressed by the malignant cells.