There has been a significant amount of work in this area. One of the most notable breakthroughs was from Shinya Yamanaka (and his lab) in 2006 & onward where they defined a core set of factors that can be expressed in adult cells to convert them back to embryonic stem cell-like states [1,2]. These cells are commonly referred to as induced pluripotent stem cells (abbreviated as iPSC's if you want to google them). There are a bunch of folks working on potential applications of the technology, but as you might imagine, it will take a lot of work the demonstrate safety & efficacy.

[1] https://en.wikipedia.org/wiki/Shinya_Yamanaka [2] https://pubmed.ncbi.nlm.nih.gov/16904174/