500 Scientists

The rough estimate of resources required to develop - for mice - the medical capabilities called for by the Strategies for Engineered Negligible Senescence (SENS) is presently $1 billion over ten years, give or take. Each of these [six lines of research] would require total funding in the range of $2m to $15m per year, spread over at least three and sometimes ~15 research teams. These teams will typically be working in a university or other research setting. [The lines of research] span six of the seven types of "damage" that Dr. de Grey has identified as the key intermediates in aging; the one not listed here is cell loss, whose rectification by stem cell and growth factor therapies is the subject of sufficient existing work worldwide. That's for the whole spectrum of longevity therapies: engineering the body to make cancer impossible; replacing lost cells; ensuring mitochondrial DNA damage can no longer cause issues; destroying unwanted cells that cause damage; breaking down crosslinks and amyloid that gum up biochemistry; removing hard-to-degrade biochemicals in old cells. Given all that, you should be able to rejuvenate aged mice, and extend their healthy lives considerably. Then it's onto moving the technology to work...