{"id":2259,"date":"2018-03-28T11:06:31","date_gmt":"2018-03-28T18:06:31","guid":{"rendered":"https:\/\/keck.usc.edu\/news\/at-uscs-junior-faculty-mini-symposium-stem-cell-scientists-build-to-understand\/"},"modified":"2023-11-26T08:23:57","modified_gmt":"2023-11-26T16:23:57","slug":"at-uscs-junior-faculty-mini-symposium-stem-cell-scientists-build-to-understand","status":"publish","type":"post","link":"https:\/\/keck.usc.edu\/news\/at-uscs-junior-faculty-mini-symposium-stem-cell-scientists-build-to-understand\/","title":{"rendered":"At USC\u2019s Junior Faculty Mini-Symposium, stem cell scientists build to understand"},"content":{"rendered":"\n \n \n\n\n\n\n\n\n\n
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At USC\u2019s Junior Faculty Mini-Symposium, stem cell scientists build to understand<\/h1>\n\n\n<\/div>\n \n \n
\n \n March 28, 2018<\/span>\n <\/div>\n \n \n
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When physicist Richard Feynman died in 1988, he left a message scrawled across his chalkboard: \u201cWhat I cannot create, I do not understand.\u201d Twenty years later, scientists in a very different field repeatedly invoked his words at the Junior Faculty Candidate Mini-symposium, hosted by USC\u2019s Department of Stem Cell Biology and Regenerative Medicine on March 13.
\nMaxwell Z. Wilson from Princeton University shared how he uses genetic tricks to \u201cbuild\u201d light-sensitive signaling molecules. This enables him to use light to precisely control the behavior of cells\u2014an approach known as optogenetics. Visible light, infrared light or darkness can change the density and location of key proteins, which influence important cell behaviors such as communication and metabolism.
\n\u201cI think that the ramifications of this work are going to go way beyond metabolism,\u201d said Wilson. \u201cAfter all, everything that happens in the cell is just a bunch of molecules interacting. And these tools can be used to create these crucibles of molecular interaction of any molecules you desire.\u201d
\nIn the future, he intends to use light to exert control over what he calls \u201cnature\u2019s ultimate designer\u201d\u2014proteins called Wnt signals that regulate embryonic development.
\nAndres Matias Lebensohn from Stanford University School of Medicine continued the conversation about Wnt signals, mentioning their additional role in certain cancers\u2014including 90 percent of cases of colon cancer. He revealed previously unappreciated mechanisms that regulate Wnt signaling, and therefore could be targeted to treat cancers.
\n\u201cIn my lab, I want to dissect molecular mechanisms underlying new regulations in developmental signaling in order to learn about the basic biology of signaling pathways, understand the qualities that allow these mechanisms to generate different biological outcomes in physiology, and use this knowledge to manipulate the pathways therapeutically in regenerative medicine and cancer,\u201d he said.
\nSeth Shipman from Harvard University \u201cbuilt\u201d a new tool for recording data about biological events in living cells over time. This tool is a \u201cmolecular recorder\u201d that lets cells store this data in their own DNA\u2014which scientists can read using genetic sequencing. Shipman has piloted this tool in bacteria, and eventually wants to apply this approach in mammalian cells to record the brain\u2019s developmental events, including the ones that lead to neurodevelopmental and neuropsychiatric diseases.
\n\u201cWhat I really want are recipes to make each cell type in the brain,\u201d said Shipman.
\nPulin Li from the California Institute of Technology harnessed the power of synthetic biology to study a developmental signal known as Sonic Hedgehog (SHH), which helps drive the embryonic formation of the central nervous system, limbs, teeth and other tissues. She not only revealed intricate details of SHH, but also an approach to amplify or dampen key developmental signals or, in the future, hormones.
\nIn the future, Li said that she will apply this approach to \u201ctwo particularly interesting multicellular behaviors \u2026 one is tissue patterning, the other is the hormone oscillations in our body.\u201d
\nYejing Ge from The Rockefeller University talked about when stem cells have identity crises in response to injury. She examined stem cells that simultaneously possess the genetic hallmarks of both skin cells and hair follicle cells\u2014a phenomenon called \u201clineage infidelity\u201d that is useful for producing the variety of cell types needed to heal wounds. However, if lineage infidelity persists longterm due to a chronic wound or irritation, these stem cells can go rogue and produce cancer.
\n\u201cCan we understand cancer by going back to ask how normal stem cells deal with stress, in this case wound repair?\u201d asked Ge.
\nIn the future, she plans to use sophisticated genomics tools to study lineage infidelity in health, disease and aging.
\nAndy McMahon, chair of the Department of Stem Cell Biology and Regenerative Medicine, called the mini-symposium \u201cthe highlight of our year, where we have an opportunity of celebrating the diverse science on the part five stellar young junior faculty candidates.\u201d He added, \u201cIt\u2019s a diverse group looking at a variety of different problems with an extraordinary variety of inventive approaches that they\u2019re bringing to those problems.\u201d
\n\u2014 Cristy Lytal<\/p>\n\n\n\n<\/div>\n <\/div>\n\n\n <\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

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