Authors: Hine C, Mitchell JR PMID: 24905161 PMCID: PMC4278638 DOI: 10.1016/j.stem.2014.05.016 Abstract Aging and chemotherapeutics damage hematopoietic stem cells (HSCs), leading to dysregulation of asymmetric division and subsequent immunosuppression and blood-related diseases. In this issue, Cheng et al. (2014) use prolonged fasting as a medical intervention to decrease IGF-1/PKA signaling and protect HSCs against chemotherapeutic [...]

Authors: Nowotarski SL, Woster PM, Casero RA PMID: 23432971 PMCID: PMC4027058 DOI: 10.1017/erm.2013.3 Abstract Polyamines are small organic cations that are essential for normal cell growth and development in eukaryotes. Under normal physiological conditions, intracellular polyamine concentrations are tightly regulated through a dynamic network of biosynthetic and catabolic enzymes, and a poorly characterised transport system. [...]