Totipotency literally means all powerful, but it refers in biology to specific cells. These cells can make every type of cell in the body of an organism plus the extraembryonic tissues needed for development. This includes humans. So if you could reprogram human cells like blood or skin cells into totipotent stem cells, you might […]
Weekly reads: gene therapy nod, Nature pub ethics, CRISPR LDL Read More »
I’ve written before about Liz Parrish and her life-extension firm BioViva. Now they appear to have connections with another entity called Integrated Health Systems or IHS, according to a new Wired article. Some of what is going on with IHS and maybe BioViva in Mexico seems extremely risky to me. BioViva, Parrish, and Integrated Health Systems The
Weekly reads: BioViva & life-extension clinic, RMATs, universal cells Read More »
Are long telomeres better than short ones? What about older folks lengthening their telomeres somewhat or stabilizing the length? Could this counter aging? As with many things, the story is far more complicated than we might hope. For background, telomeres are special structures protecting the ends of chromosomes. I remember as a young student that
Long telomeres link to disease suggests caution on anti-aging push Read More »
I often get asked about where things stand with stem cell therapy for back pain, which is the focus of today’s post. Back pain is a complex condition with many potential causes. New treatments are needed as existing approaches often don’t work that well. What about stem cells? Stem cell therapy or other cell therapy
Can stem cell therapy for back pain work? Read More »
It’s a big challenge to get a cell therapy approved by the FDA and if you look at my list of FDA-approved stem cell therapies, it’s not as long as we might hope. FDA OK on cell therapy from Gamida Cell For this reason, it was excellent news to see that the FDA approved a
Weekly reads: FDA nod on new cell therapy, gray hair, pong-playing cells Read More »
The biotech Sarepta has had a complicated go of it with the FDA sometimes related to their Duchenne muscular dystrophy (DMD) gene therapy efforts. In late 2016 I wrote about how there was some controversy as the FDA approved the Sarepta drug eteplirsen (Exondys 51) also for DMD, going against an advisory panel that had
Weekly reads: Sarepta, epigenomics, FDA on eyedrops Read More »
There has been a big jump in paper retractions in science over the last 20 years. What’s going on? How do the trends in the stem cell field compare to other fields like cancer research and more broadly? Is AI going to change the dynamic between those engaging in misconduct and those who are looking for misconduct
Trends in retractions as AI arms race on misconduct looms 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 »
I wrote earlier this week about genome sequencing of famous dead celebrities, pointing out that the trend seems full of ethical complexities. Genome news More broadly, sequencing the genomes of non-celebrities from hundreds or thousands of years ago can be important research. A new NYT piece covers such work on the Swahili people. Such research
Weekly reads: genome sequencing, chemical reprogramming 2.0 Read More »
Where do things stand with potential applications of CRISPR and other gene editing technologies in patients? Overall, things are looking very positive. CRISPR human trials This week the third big international human genome editing meeting took place in London. The summit addressed numerous potential clinical applications. It was good to see the agenda included quite
Weekly reads: big CRISPR mtg, Mesoblast good news, Neuralink spiked Read More »