An FDA FOIA dump of text messages of former Commissioner Stephen Hahn suggests that a Texas regenerative firm called Direct Biologics benefited from political pressure on him in mid-2020. Then he was asked again to help in early 2021. This was shortly before he resigned at the start of the Biden Administration. The push came from […]
FDA leader Stephen Hahn was pressured to aid Texas firm Direct Biologics Read More »
There was a time when I thought transdifferentiation based approaches might quickly move into clinical trials. Then things kind of cooled off. We didn’t see many papers reporting methods to transdifferentiate cells. I still think that this technology, sometimes called direct reprogramming, has major potential. A new paper on making human brain cells this way got
Paper sparks renewed interest in transdifferentiation & clinical potential Read More »
Exosome therapy is a still-experimental cell therapy approach aimed at treating specific diseases using secretions from cells. It’s novel since most attention on cell therapies has been given to using the actual cells themselves. In addition, this approach is a newer idea than using cells as the drug to treat diseases. Interestingly, the term “cell
Fact-checking exosome therapy: costs, risks, & lack of data Read More »
Stem cell biologist Jacob Hanna has a new startup called Renewal Bio. Its goal is to harvest cells or tissues from human embryo or fetus models for clinical use. I believe that their commercial ambitions have so far outstripped careful thought and discussion in the broader community of researchers. There are major risks here for
‘We don’t want to freak people out’: about that Jacob Hanna human embryo model startup Read More »
Histone proteins such as histone H3 are often popping up in science writing and news sometimes includes specific modified forms of H3 including one that we scientists call H3K27me3. What is in this article What is H3K27me3? | The histone code | H3K27ac and H3K27me3 function | H3K27 and human disease | References The goal of today’s post
Histone code series: H3K27me3 & H3K27ac functions & roles in diseases like DIPG Read More »
I have a soft spot for fibroblasts, perhaps because one of the first immortalized cell lines I ever grew was NIH3T3. These are mouse fibroblasts that have been immortalized. They are very useful for a variety of experiments. I used them to study an oncogene called E2A-PBX1. Experience with fibroblasts including 3T3s I was amazed
Weekly reads: fibroblasts, gene-editing, Mitalipov, personhood, embryos Read More »
The last six months I’ve been spending even more time than usual writing NIH grants (and a few others). The last two weeks have been especially busy on this front as I am getting an R01 renewal out the door. My paper reading lately has been mostly related to the grant writing I’m doing. Still,
Weekly reads: NIH grants, side effect of darker hair, FDA warning, CRISPR Read More »
It’s been mostly a downbeat week on the stem cell news front including a deep revisit by Reuters to the Piero Anversa case that has new revelations. It’s ugly stuff involving other folks too. We’ll start on the iPS cell front, where a trial participant had a teratoma. I’ve had a long-standing interest in the
People are the real driving force in the stem cell and regenerative medicine field including my colleague Jan Nolta here at UC Davis. She is the Director of our Stem Cell Program. There’s also news about Stanford’s stem cell Director Irv Weissman. Jan Nolta receives award Jan’s lab is prolific and in many ways is
Weekly reads: Jan Nolta recognition, new director after Irv, FDA guidance Read More »
Blastoids are lab-grown models of human embryos that represent a relatively new area of developmental biology research. The goal of today’s post is to give you everything you need to know about this topic. What’s in this article What are blastoids? | How are blastoids made? | Use in research | Blastoids challenges & Ethics
What are blastoids, roles in biomedical research, & ethical considerations Read More »