期刊
ELIFE
卷 8, 期 -, 页码 -出版社
ELIFE SCIENCES PUBLICATIONS LTD
DOI: 10.7554/eLife.41356
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资金
- Austrian Science Fund
- Paul G. Allen Family Foundation
- National Institute on Aging [R01-AG056306-01, K99-AG056679-01]
- JPB Foundation
- Glenn Family Foundation
- American Federation for Aging Research
- Leona M. and Harry B. Helmsley Charitable Trust [2012-PG-MED002]
- Annette Merle-Smith CIRM [TR2-01778]
- G Harold and Leila Y. Mathers Foundation
- Brain and Behavior Research Foundation
Direct conversion of human somatic fibroblasts into induced neurons (iNs) allows for the generation of functional neurons while bypassing any stem cell intermediary stages. Although iN technology has an enormous potential for modeling age-related diseases, as well as therapeutic approaches, the technology faces limitations due to variable conversion efficiencies and a lack of thorough understanding of the signaling pathways directing iN conversion. Here, we introduce a new all-in-one inducible lentiviral system that simplifies fibroblast transgenesis for the two pioneer transcription factors, Ngn2 and Ascl1, and markedly improves iN yields. Further, our timeline RNA Seq data across the course of conversion has identified signaling pathways that become transcriptionally enriched during iN conversion. Small molecular modulators were identified for four signaling pathways that reliably increase the yield of iNs. Taken together, these advances provide an improved toolkit for iN technology and new insight into the mechanisms influencing direct iN conversion.
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