Meet Altos Labs, Silicon Valley's latest bet on living forever

https://www.technologyreview.com/2021/09/04/1034364/altos-labs-silicon-valleys-jeff-bezos-milner-bet-living-forever/

"with the addition of just four proteins, now known as Yamanaka factors, cells can be instructed to revert to a primitive state with the properties of embryonic stem cells. By 2016, Izpisúa Belmonte’s lab had applied these factors to entire living mice, achieving signs of age reversal and leading him to term reprogramming a potential elixir of life... some mice developed ugly embryonic tumors called teratomas, even as others showed signs their tissues had become younger."

Related: Scientists unveil stem cell research breakthrough

http://global.chinadaily.com.cn/a/202206/25/WS62b64297a310fd2b29e687b4.html