Expanded Potential Stem Cell lines of pig and human cells established
A new approach has enabled researchers to create Expanded Potential Stem Cells (EPSCs) of both pig and human cells. These stem cells have the features of the very first cells in the developing embryo, and can develop into any type of cell. The research from LKS Faculty of Medicine of The University of Hong Kong (HKUMed), the Wellcome Sanger Institute, and the Friedrich-Loeffler-Institut in Germany offers incredible potential for studying human development and regenerative medicine.
The study published in Nature Cell Biology today (3rd June) is the first time scientists have been able to derive stem cells from early pig embryos. Domestic pigs have great potential for biomedical research because of their genetic and anatomical similarities to humans, including comparable organ sizes. Being able to genetically-modify pig stem cells will also be beneficial for animal health and food production.
Stem cells have the ability to develop into other cell types, and existing stem cell lines are already extremely useful for research into development, disease and treatments. However, currently available types of stem cell lines have limitations, and until now it has also not been possible to create embryonic stem cells from pigs and many other farm animals.
“Scientists have been attempting to derive porcine embryonic stem cells for decades without much success. With our Expanded Potential Stem Cell technology, we have now successfully derived and characterised stem cells from porcine preimplantation embryos. We have also established similar human stem cells. Our study represents a significant advance in stem cell research.”
Professor Pentao Liu, the leader of the study from the School of Biomedical Sciences and Stem Cell and Regenerative Medicine Consortium, HKUMed, and previously of the Wellcome Sanger Institute
Since human EPSCs can produce large numbers of placenta cells – called trophoblasts – they offer new opportunities to investigate pregnancy complications such as pre-eclampsia and miscarriages.
EPSCs come from culturing cells from the earliest stage of development, when the fertilised egg has only divided into 4 or 8 cells and the cells retain some totipotency – the ability to produce all cell types.
“These EPSC stem cells possess developmental potency that is not generally seen in conventional embryonic or induced pluripotent stem cells. They have the potential to produce all embryonic and extra-embryonic cell lines – including those in the placenta and yolk sac, turning back the development clock to the very earliest cell type. These cells will enable researchers to study early embryonic development, miscarriage and developmental disorders.”
Dr Xuefui Gao, a first author on the paper from HKUMed, and previously from the Wellcome Sanger Institute
The first EPSCs were created in 2017, when the group targeted key molecular pathways during very early development in mice. At these very earliest embryonic developmental stages, mammalian species are very similar and the cells are like a blank sheet of paper. This study has shown that it is possible to use the same approach to create human EPSCs and also to establish EPSCs from pigs – mammals that had previously been elusive to stem cell researchers.
“Our porcine EPSCs isolated from pig embryos are the first well-characterized pig cell lines worldwide. EPSC’s great potential to develop into any type of cell provides important implications for developmental biology, regenerative medicine, organ transplantation, disease modelling, and screening for drugs.”
Dr Monika Nowak-Imialek, an author on the paper from the Friedrich-Loeffler-Institut (FLI) in Germany
The Latest on: Stem cells
via Google News
The Latest on: Stem cells
- Celularity's Dr. Robert Hariri on testing stem cell therapy for coronavirus patientson April 3, 2020 at 2:59 pm
Robert Hariri, founder, chairman and CEO of Celularity, join "Squawk Alley" to discuss the testing of new stem cell treatments for coronavirus patients.
- FDA OKs 1st Stem Cell Human Trial for COVID-19on April 3, 2020 at 12:53 pm
April 3, 2020 -- A human clinical trial of an experimental stem cell therapy for coronavirus patients has been approved by the U.S. Food and Drug Administration. The stem cell treatment is derived ...
- Stem cell-derived polarized hepatocyteson April 3, 2020 at 2:15 am
To model hepatocyte function accurately in vitro, it is necessary to generate and maintain a polarized epithelium. Here, the authors describe a protocol to generate polarized human pluripotent stem ...
- Chemotherapy exacerbates ovarian cancer cell migration and cancer stem cell-like characteristics through GLI1on April 2, 2020 at 3:16 pm
Despite the great clinical response to the first-line chemotherapeutics, metastasis still happens among most of the ovarian cancer patients within 2 years. Using multiple human ovarian cancer cell ...
- Genetic self-activation maintains plant stem cellson April 2, 2020 at 8:03 am
Branching allows plants to occupy space in three dimensions, an innovation considered essential for their adaption. Stem cells are key to this process because they promote the establishment of new ...
- From baseball to stem cells, White Sox voice Ed Farmer had a story for everyoneon April 2, 2020 at 7:26 am
Ed Farmer caught me completely off guard on a June afternoon at the ballpark. "Last week, I was studying stem cells at Harvard," he said. Excuse me? I think that was my actual response. Sometimes you ...
- Unproven Stem Cell Therapy Gets OK for Testing in Coronavirus Patientson April 2, 2020 at 6:10 am
The treatment, which has been promoted by President Trump’s personal lawyer, Rudy Giuliani, will begin early-stage clinical trials.
- Stem Cell Therapy for Colon Canceron April 2, 2020 at 5:00 am
Mesenchymal stem (MSCs), a category of adult stem cells, are being evaluated as therapy for numerous cancers. MSCs are excellent carriers for tumor treatment because they migrate to tumor tissues, can ...
- Stem cells used to combat COVID-19 pneumoniaon March 31, 2020 at 11:41 pm
Scientists are racing to find a treatment that can help save lives. Now, a team of scientists has suggested that stem cell therapy can help fight the deadly infection. The scientists from the ...
- Researchers use stem cells to combat COVID-19 pneumoniaon March 31, 2020 at 12:49 am
Dr. Jin relied on his more than 20 years of knowledge about stem cells to work with an international team driven to save lives. He used the messaging app WeChat to bridge the distance between his ...
via Bing News