Search Results for: embryo models

‘We don’t want to freak people out’: about that Jacob Hanna human embryo model startup

Jacob Hanna Renewal Bio

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 …

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Weekly reads: fibroblasts, gene-editing, Mitalipov, personhood, embryos

NIH 3T3 fibroblasts ATCC

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 …

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Is embryonic stem cell research a target after Roe?

Knoepfler lab stem cells

When I first started this blog back in 2010 the most contentious issue on the more political side of our field was federal funding for embryonic stem cell research. It was something you couldn’t take for granted. Some history on embryonic stem cell funding in the US There were times back then when funding of …

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Top stem cell stories of 2021: COVID, diabetes, human embryos, clinics in court

regenerative medicine, stem cells 2021

The past year was all over the place for the stem cell and regenerative medicine field. As you can see in my scoring of my 21 predictions for 2021, quite a few things were surprises in terms of what did and didn’t happen. Here’s an overview of the top stories of the year in our …

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When does a human embryo model become the real thing & other tough questions for a new field

human embryo model mukul tewary sm

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 …

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Monkey human embryo chimera Cell paper: exciting, ethically complex direction

human embryo chimera

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 …

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Weekly reads: embryo pubs stir things up, organoids crying, & more

organoids tear glands sm

This was an unusual week in that three papers in a sense collided together related to embryo production and growth, raising new research possibilities but also serious ethical questions. New research: what is an embryo & what is not? The first two Nature papers reported generating the most realistic models of human embryos from scratch …

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New lab-grown blastoids are strikingly similar to human embryos

blastoids nature paper figure 2

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 …

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Do human Very Small Embryonic-Like Stem Cells (VSEL) exist as a normal population of actual stem cells?

Supposedly there is a type of normal adult stem cell that intrinsically possesses many of the same properties as embryonic stem cells (ESCs). No reprogramming needed. No blastocysts needed. These reportedly amazing cells, called Very Small Embryonic-Like Stem Cells (VSELs), can in theory be isolated from umbilical cord blood (UCB) or even bone marrow. Yet …

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What are blastoids, roles in biomedical research, & ethical considerations

blastoids nature paper figure 2

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 …

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