Warren symposium follows legacy of geneticist giant

If we want to understand how the brain creates memories, and how genetic disorders distort the brain’s machinery, then the fragile X gene is an ideal place to start. That’s why the Stephen T. Warren Memorial Symposium, taking place November 28-29 at Emory, will be a significant event for those interested in neuroscience and genetics. Stephen T. Warren, 1953-2021 Warren, the founding chair of Emory’s Department of Human Genetics, led an international team that discovered Read more

Mutations in V-ATPase proton pump implicated in epilepsy syndrome

Why and how disrupting V-ATPase function leads to epilepsy, researchers are just starting to figure Read more

Tracing the start of COVID-19 in GA

At a time when COVID-19 appears to be receding in much of Georgia, it’s worth revisiting the start of the pandemic in early 2020. Emory virologist Anne Piantadosi and colleagues have a paper in Viral Evolution on the earliest SARS-CoV-2 genetic sequences detected in Georgia. Analyzing relationships between those virus sequences and samples from other states and countries can give us an idea about where the first COVID-19 infections in Georgia came from. We can draw Read more
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Ximei Qian

Stay out, stray stem cells

Despite the hubbub about pluripotent stem cells’ potential applications, when it comes time to introduce products into patients, the stem cells are actually impurities that need to be removed.

That’s because this type of stem cell is capable of becoming teratomas – tumors — when transplanted. For quality control, researchers want to figure out how to ensure that the stem-cell-derived cardiac muscle or neural progenitor or pancreas cells (or whatever) are as pure as possible. Put simply, they want the end product, not the source cells.

Stem cell expert Chunhui Xu (also featured in our post last week about microgravity) has teamed up with biomedical engineers Ximei Qian and Shuming Nie to develop an extremely sensitive technique for detecting stray stem cells.PowerPoint Presentation

The technique, described in Biomaterials, uses gold nanoparticles and Raman scattering, a technology previously developed by Qian and Nie for cancer cell detection (2007 Nature Biotech paper, 2011 Cancer Research paper on circulating tumor cells). In this case, the gold nanoparticles are conjugated with antibodies against SSEA-5 or TRA-1-60, proteins that are found on the surfaces of stem cells. Read more

Posted on August 9, 2016 by Quinn Eastman in Heart Leave a comment