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 »
Remember Paolo Macchiarini, the famous-turned-infamous so-called “stem cell surgeon” who ended up in legal trouble and with trial participants who died? Before we get into this we have a new feature for our weekly reads, which is the stem cell and regenerative medicine tweet of the week. See that at the bottom of the post.
Weekly reads: Macchiarini pub, cloned journal, Mammoth genome, tweet of the week Read More »
Are there any guidelines for genomics studies of famous dead people like sequencing their genomes? It doesn’t seem like it. I remember when I first heard of the idea of trying to clone John Lennon from an old molar. Fortunately, as far as I know no one ever tried that, but it wouldn’t surprise me if
Pros & cons of dead celebrity genomics Read More »
About ten years ago I ran across the organism called the immortal jellyfish. Luckily I didn’t get stung because it wasn’t an in-person encounter like while swimming. Rather, I came upon the idea that these guys lived forever. Someone was even selling an immortal jellyfish extract. They claimed it would reverse aging in people. That
Are immortal jellyfish actually mortal? Read More »
Toward the end of each year, I make stem cell & regenerative medicine predictions for the coming year. It’s a fun tradition here on The Niche that goes way back. The stem cell field has changed dramatically as reflected in each year’s predictions. Here’s a list of past predictions with my grades of how they
2023 stem cell & regenerative medicine predictions Read More »
There have been rare instances like with scientist James Wilson where researchers were involved in what I would call major misconduct but somehow managed to bounce back. In a sense, they were given second chances in part by regulators but also by other scientists or supporters. However, after extraordinary misconduct, especially contributing to the death
2nd chances after big misconduct? He Jiankui, James Wilson, others Read More »
Germ or sex cells have many important implications for health and research. In today’s post the goal is to provide a helpful, comprehensive overview of these remarkable cells. Where does research on these cells stand today? It’s an exciting time. What are sex cells? | Are sex cells haploid or diploid? | Why are germ cells
Germ or sex cells: DNA content, research, clinical applications 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 »
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 »
I’m a Star Wars fan so I go into watching new Star Wars shows like the Obi-Wan Kenobi series already wanting to like them. It’s kind of akin to being a grant reviewer and being assigned a grant to review whose focus is already a passion of yours. However, after what I would call an
Obi-Wan Kenobi series review: lots to like but many plot holes Read More »