General cancer cell survival machinery

The term General cancer cell survival machinery refers to the integrated network of molecular pathways and cellular processes that malignant cells utilize to evade programmed cell death and maintain viability under conditions of oncogenic stress and nutrient deprivation. This conceptual framework encompasses several Hallmarks of Cancer (Hanahan & Weinberg, 2011), such as the constitutive activation of growth factor signaling and the suppression of apoptosis through the upregulation of proteins like BCL-2. Additionally, cancer cells often exploit the ubiquitin-proteasome system for protein quality control and utilize autophagy as a survival mechanism during metabolic crisis (White, 2012). Because this machinery is not a single molecular entity but a complex system of redundant pathways, it is not considered a specific therapeutic target in the traditional sense. Instead, it represents a broad category of targets, including enzymes, receptors, and chaperones, that are frequently co-opted by tumors. Therapeutic strategies often involve the use of targeted inhibitors like Venetoclax or Everolimus to disrupt these essential survival nodes, though the primary challenge remains the potential for toxicity in healthy tissues that rely on similar survival mechanisms.

Other names

Hallmarks of cancerOncogenic survival signalingAnti-apoptotic machineryCancer cell maintenance pathwaysTumor survival networks

Inhibition of various survival-promoting nodes including anti-apoptotic BCL-2 family proteins (Letai, 2008), growth signaling via the PI3K/AKT/mTOR axis (Laplante & Sabatini, 2012), proteasomal degradation of pro-apoptotic factors, and DNA damage response mechanisms.