CRISPR gene editing has made rapid progress heading from bench to bedside. Perhaps the fastest has been its progress toward clinical use to combat sickle cell disease. We’ll start with a new paper on one major effort here. CRISPR gene editing. This process often involves cutting DNA, which then can be used as an opening to …
Weekly reads: CRISPR sickle cell, Parkinson’s, pig-human chimera concerns Read More »
A new paper focused on human and other chimeras just came out today in Cell reporting a number of findings, but most strikingly successful generation of human-pig chimeras in utero. The paper, entitled, “Interspecies Chimerism with Mammalian Pluripotent Stem Cells” describes various chimeras including mouse-rat ones, although those have previously been reported. This work comes …
Chimeras are one of the more controversial and fascinating areas of human stem cell and early embryo research. The notion of a chimera traces back thousands of years to creatures that were mixtures of various animals including humans in some cases. What about a real human chimera embryo? Today, chimera research has the potential to …
NIH suspends funding of human chimera research pending policy review Read More »
A new Cell paper from an international team led by Juan Carlos Izpisua Belmonte pushes human embryo chimera embryo research further than ever before. It is both exciting work and raises many complex bioethics questions at the same time. What is a human embryo chimera? By way of background, chimeric human embryos contain a mixture …
Monkey human embryo chimera Cell paper: exciting, ethically complex direction Read More »
Michael Le Page over at The New Scientist reports on a new paper describing the birth of monkey-piglet chimeras. Unlike most such primate embryo chimeras formed in research in the past, these were allowed to be born. A litter of ten from the new monkey-pig research, two of which were chimeras, all rather quickly died …
Monkey-pig chimeras pub discouraging for similar human research toward organ transplants Read More »
A new Cell Stem Cell paper by Victoria L. Mascetti and Roger Pedersen on human-mouse chimera modeling is quite interesting and important. I really enjoyed this short paper, but I do have a reservation about one way that it is being interpreted. The authors show that human pluripotent stem cells (hPSC) including induced pluripotent stem cells …
Perspectives on Pedersen Lab Human-Mouse Chimera Paper Read More »
When you are a stem cell biologist and especially if you do a blog, you sometimes run across very strange things like a chimera cat. In this case, I stumbled on the whole topic of chimeric cats because I was searching for info on chimeric rats on Google. Of course, I was. It’s kind of …
Weekly reads: chimera cat vs. chimeric rat, cheap sequencing, more 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 »
“If I’m going to the trouble of cloning myself, I want the clone to be a copy of me!” I’m imagining what someone might say if they were told that their expensive and ethically dubious personal cloning efforts produced a clone that was somebody else instead of them. Even if the clone was very similar …
Surprising reason why human cloning may produce someone else Read More »
Some recent developments in the stem cell world are worth a look. I’ve posted the headlines verbatim and the links to some of these stem cell news bites below. NIH Plans To Lift Ban On Research Funds For Part-Human, Part-Animal Embryos. NIH may allow funding of human-animal chimeras in certain cases. Stem cell ‘tourists’ flock to …
Stem cell news bites: chimeras, Australian clinics, organoids & more Read More »