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 »
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 »
Here in the U.S. we just had our big Thanksgiving holiday, but science goes, stem cells keep growing and needing attention, and it’s another weekend chance to catch up on our paper reading. Here’s this weekend edition of recommended reads including news items and pubs. From Cell Stem Cell: Single-Cell Transcriptome Analysis of Uniparental Embryos Reveals …
Every so often here on The Niche I list science and news articles worth a look as “weekend reads”. Below is my list for this weekend. Enjoy! The first article doesn’t really fit into the other main categories, but the title “herding brains” caught my eye. Stem Cells Stem cells and regenerative capacity in aging …
Weekend reads include herding brains, stem cells, & CRISPR Read More »
Three national academy leaders have a new opinion piece in Science on what the community needs to do next regarding human germline editing now that we are most likely in the CRISPR babies era. Some of us have been wondering what the Academies and their empowered experts really think about this issue and what they …