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 »
A new word has been added to the lexicon of human stem cell research – blastoids, aka “blastocyst-like structures.” Unlike the familiar three-layered embryo that emerges during the third week of prenatal development, the earlier blastocyst resembles a fluid-filled soccer ball, with a smear of cells on the interior face destined to develop into the …
New lab-grown blastoids are strikingly similar to human embryos Read More »
If you are sick of the general news lately, I recommend turning to the wonder of cool science like the thought-provoking data in the duo of new stem cell pubs discussed below including on artificial embryos. Synthetic embryos A team led by Alfonso Martinez-Arias reports new findings in their Nature letter in the growing area …
Papers on artificial embryos and muscle stem cells Read More »
Is it possible that CRISPR gene editing actually didn’t happen in many of the human embryos in that big Nature paper that made such news a couple weeks back? Some doubts have emerged that call the main conclusions of the paper into question and argue that more definitive studies are needed to be sure. An …
Doubts raised on key points of Nature paper on CRISPR gene editing of human embryos Read More »
Can you make a synthetic embryo, also called an embryo model? Developmental biologist Magdalena Zernicka-Goetz has long been on the trail of this seemingly almost uncatchable quarry. With her team’s publication in Science today they took a big step forward on this path even if some major hurdles remain. You can see her discussion of …
Synthetic embryo or embryo model tech reported in Science: how big is this? 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 »
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 …
When it comes to coverage of stem cell research in the media, science news can both be cool, but also surprising. Some of the more interesting publications don’t always draw news coverage too. This post is a list of recent notable pubs and news. First some pubs. How good are human brain organoids at modeling …
Recommended reads: stem cell pubs plus science news Read More »
With stem cells there’s always all kinds of developments and news every week or even every day. Here is an assortment in no particular order of some of the latest news including some across the spectrum including weird and sometimes stuff. The linked phrases are often the actual headlines of the media pieces. New CIRM …
Stem cell news update: the good, the bad, & the weird Read More »
Something called the 14-day rule on growing human embryos in the lab helped keep a tough question in check for a long time: when is it ethically wrong or just practically unwise to continue growing a human embryo for research? There is no good answer based on science or anything else. ISSCR moves beyond strict …
Risks rise as ISSCR drops strict 14-day rule on human embryo growth in the lab Read More »