The Capitol Times in Wisconsin ran a story just before the primary there on Bernie Sanders on Stem Cells, indicating that has held anti-stem cell research positions. It can sometimes be hard to figure out politicians’ positions on stem cells and what actions they might take. Update: See this poll on what people predicted the […]
Bernie Sanders Mixed Record on Stem Cells Read More »
By Heather Main I was a little ashamed of myself that I didn’t know who half of the finalists were in Paul Knoepfler’s Stem Cell Person of the Year Award. I decided to look into it and find out what (or who) I have missed…..Interestingly, 3 of the 7 listed here are not scientists but
Mini-bios on finalists for Stem Cell Person of the Year Read More »
Remember the debate over so-called 3-person IVF? The goal of this technology, also referred to as mitochondrial transfer and 3-parent IVF, is to prevent mitochondrial disease through nuclear transfer in oocytes or one-cell embryos. The resulting genetically modified (GM) human embryos and ultimately children if it works could have dodged mitochondrial disease, but also could have serious or
250,000-fold oversight on 3-person IVF mitochondrial transfer? Read More »
The Juan Carlos Izpisua Belmonte group published a Cell paper today on using gene editing to reverse mutations associated with human mitochondrial disease. The paper is Reddy, et al. and is entitled, “Selective Elimination of Mitochondrial Mutations in the Germline by Genome Editing”. The authors report success using TALEN-based gene editing or mitochondrial-direct restriction enzyme (mito-ApaLI)
Juan Carlos Izpisua Belmonte Cell Paper on Gene Editing for Mitochondrial Disease Read More »
Just how good are human embryonic stem (ES) cells made by therapeutic cloning via nuclear transfer, with the successful technique first reported by the lab of Shoukhrat Mitalipov at OHSU last year? How do they compare to induced pluripotent stem (iPS) cells or traditional ES cells made from IVF embryos? A new paper in Nature directly tackles these
Review of Mitalipov Nature paper: cloned ES cells vs iPS cells Read More »
It was intriguing last week to read about another advance in somatic cell nuclear transfer (SCNT)-based therapeutic cloning of human embryonic stem cells (hESC). The first such work was published last year by Mitalipov’s group from OHSU. This second paper to produce so-called nuclear transfer hESC (NT-hESC) made the important advance to show that it could
The main challenges for SCNT cloning of human embryonic stem cells Read More »
An international team of stem cell scientists has replicated human therapeutic cloning to make embryonic stem cells via somatic cell nuclear transfer (SCNT). The team was led by Drs. Dong Ryul Lee of CHA Stem Cell Institute in Korea and Robert Lanza of Advanced Cell Technology (ACT) and reported the advance in the Chung, et
Adult human therapeutic cloning of embryonic stem cells by SCNT Read More »
In two Nature papers (here and here) published today researchers report the astounding finding of reprogramming differentiated cells back to a pluripotent or even totipotent state simply by exposing the cells to extreme environmental stress, creating cells they called STAP cells. Update: see more thoughts on STAP stem cells here. STAP cells: stressing the cell
Review of Obokata STAP cells Nature papers Read More »
There have been many interesting developments in stem cells in 2013, but to me the biggest event by far was the first ever successful somatic cell nuclear transfer (SCNT)-based human therapeutic cloning. This approach generated apparently genetically normal human embryonic stem cells (hESC), an astonishing accomplishment. There are two kinds of human cloning: therapeutic and reproductive.
Stem cell story of the year: human therapeutic cloning Read More »
Nominations for Stem Cell Person of the Year 2013 closed last night and I ended up with a remarkable list of 30 nominees. I have included a few sentences about each one below, often taking verbiage directly from the nominator. The online voting on these nominees will start soon. The top vote getters will move