Who is Michael Deem and what was his role in his former student He Jiankui’s purported production of twin CRISPR’d babies? Is Deem now trying to edit himself out of the project? He Jiankui relied on help from many people and Deem was reportedly a part of that team. Members of He’s own research team helped […]
Could He Jiankui have faked part or all of his CRISPR babies story? If so, how? Why? Or to put it another way, almost everyone seems to be assuming the story is real, but should we be more skeptical? Should we flip things around and assume the story isn’t entirely kosher until proven otherwise? I once
History tells us to be more skeptical of He Jiankui’s CRISPR baby story Read More »
Did Chinese researcher He Jiankui really CRISPR gene edit the CCR5 gene in two embryos producing twin baby girls? In my opinion the answer is “no”, but probably not for the reason you might think at first. He proclaims gene edits He claimed he had made twin baby girls with “gene edits”, which I feel is unethical
He Jiankui didn’t really gene edit those girls; he mutated them Read More »
Some recent claims had me wondering whether Liz Parrish is the world’s most genetically modified person. She and her firm BioViva are making that claim. It’s an important question but maybe not for the reason many of us first might think. This is not really about one person. Instead, this is a weighty question because
As we think about how much of a role belief should play in the hard sciences such as cell biology, a supposed cell type called VSEL or very-small embryonic stem cell-like cells comes to mind. For these guys it seems to me that the ratio of data to belief isn’t great. VSELs have nine lives. I
The role of belief in hard science: the VSEL case Read More »
We often don’t think of them that way but reproductive cells like sperm and egg are also relatives of stem cells, and it turns out that there are stem cells that make the reproductive cells too like sperm stem cells. Sperm and germ cell stem cells DNMT3A-dependent DNA methylation is required for spermatogonial stem cells
Recommend reads: CRISPR baby guy free, DNMT3, sperm, Editas, hearing loss, reprogramming Read More »
I’ve been following the research related to human cloning now for more than a decade. Is human cloning more possible at this point? How do we even define such cloning? Did you know there are two types? The goal of this post is to educate you and in the process answer such questions. What’s in
Human cloning is more likely now but would you take the big risks? Read More »
A human embryo model is a laboratory-produced collection of living cells that has some key things in common with real human embryos. They are made from pluripotent stem cells, which include embryonic stem cells and induced pluripotent stem cells or iPS cells. This research is both exciting and ethically complicated, raising some difficult questions. Embryo
Making a CRISPR baby is a controversial idea to even propose now for many reasons, yet even after He Jiankui’s train wreck some people have seemed eager to try it including apparently a scientist whose name perhaps many readers here are not so familiar with in this context: Professor Hui Yang. ‘CRISPR baby guys’ Is
Heads up on Hui Yang, another potential aspiring CRISPR baby researcher Read More »
Every year in December and early January I do a post predicting some key events for the stem cell and regenerative medicine field for the upcoming year and today’s post contains my predictions for 2020. You can see my past 2019 predictions along with my grades for them here. I gave myself a B+ for
20/20 vision? The Niche’s 20 stem cell & regenerative medicine predictions for 2020 Read More »