It’s been 20 years since stem cell scientists Drs  Shinya Yamanaka and Kazutoshi Takahashi from Kyoto University’s Center for iPS Cell Research and Application (CiRA) published how four transcription factors can reprogram fully differentiated cells to an “embryonic-like state,” as they phrased it in their paper about mouse cells. And soon thereafter they published about reprogramming in human cells. 

And it’s been 21 years since Yamanaka’s then postdoctoral research associate Takahashi –he now heads his own CiRA lab--rushed into his advisor’s office asking him to come look through the microscope.

The cells looked like embryonic stem cells but that’s not what they were: they were cells in which the clock of development had been turned back. These were induced pluripotent stem cells. Shinya Yamanaka received the Nobel Prize in 2012 for this work. 

My story in Nature Methods iPS cells: history made and history in the making is with Drs Yamanaka and Takahashi and many others who talk about how this finding has shaped their trajectory in science.

“I immediately appreciated the momentousness of the discovery because my lab was pursuing very similar strategies,” says says George Daley, MD,PhD, Dean of Harvard Medical School. “I also immediately realized that our approach was limited and unlikely to succeed.” The IPS cell generating method “was truly a eureka moment.” 

And in case you hadn't yet heard that 'Takahashing' is a verb that describes a certain approach to science, please read the story to find aout a bit more about this. 

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I also produced a documentary about this finding called Looking back with Shinya Yamanaka. My co-interviewer is Stylianos Lefkopoulos, PhD, a manuscript editor at Nature Cell Biology.  

Here is an excerpt focused on patients and the prospects for clinical applications of induced Pluripotent stem cells

Here is a sneak-peek podcast about the upcoming meeting of the International Society for Stem Cell Research. It's with the the two program chairs of the ISSCR annual meeting who share a bit about the meeting and some trends they see. They are Dr Fiona Doetsch from the University of Basel and Dr Nozomu Yachie from the University of British Columbia who has a lab at the University of Osaka too.

Here is an interview with Dr. Shinya Yamanaka in Nature Reviews Drug Discovery

Here are a few papers 

Takahashi, K. & Yamanaka, S. Cell 126, 663–676 (2006).

Gurdon, J. B. Dev. Biol. 4, 256–273 (1962).

Takahashi, K. et al. Cell 131, 861–872 (2007).

Takahashi, K. & Yamanaka, S. Nat. Rev. Mol. Cell Biol. 17, 183–193 (2016).

Yamanaka, S. Cell Stem Cell 33, 372–381 (2026).

(Credit: Photo by Nikhita Singhal on Unsplash)