Micromanaging latent herpes

Micromanaging senescence

Normal somatic cells have a limited capacity for division in culture and eventually enter a state of terminal growth arrest termed replicative senescence [1]. Cells that fail to undergo senescence divide indefinitely and develop chromosomal aberrations resulting in neoplastic transformation. Senescence is believed to be a tumor suppressor mechanism that ensures that cells permanently exit the c...

The latent herpes simplex virus.

microManaging Mitochondrial Translation

Regulation of gene expression in mammalian mitochondria by microRNAs is reported by Zhang et al. During muscle cell differentiation, localization of a miRNA is increased within mitochondria, where it interacts with Ago2 to selectively activate translation of mtDNA-encoded mRNAs. The findings represent a new mitochondrial regulatory pathway and a potentially powerful means to purposefully manipu...

Micromanaging a large tumor suppressor

Two parallel and concordant activities characterize cell cycle progression. One is associated with preparation for and execution of DNA replication followed by mitosis (" cell cycle "). Cyclins are the motors of the cell cycle, as they activate the respective CDKs and thereby drive the cell through the sequential phases of the cycle. Their antagonists are CKis, which inhibit the CDKs stalling t...

Latent Herpes Viruses Reactivation In Astronauts