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- W4220978555 abstract "Abstract Conversion of astrocytes to neurons (AtN) is a promising potential strategy for the treatment of neurodegenerative diseases. Recent studies have reported that shRNA-, CasRx-, or ASO-mediated Ptbp1 suppression could reprogram resident astrocytes to neurons 1–3 . However, some groups have disputed the data interpretation of the reported AtN conversion events 4–7 . These controversies surrounding AtN conversion may due to differences in the astrocyte fate-mapping systems they applied from that in the original study, i . e ., recombinant mouse strains with astrocyte specific reporter constructs versus AAV-based labeling systems. Here, we applied AAV-based tracing systems to label astrocytes with GFAP-driven HA-tagged Cas13X (AAV-GFAP::Cas13X-NLS-HA-sgPtbp1). Compared to GFAP-driven tdTomato reporter (AAV-GFAP::tdTomato) system in previous studies, we found no AtN conversion in mouse striatum. Furthermore, no intermediate neurons and no neuron density increase suggested no AtN conversion. Our findings indicated that inconsistent AtN outcomes may arise from different fate-mapping systems between AAV and transgenic mice, as well as through use of different reporter proteins. Thus, the complexity of astrocyte labeling systems warrants careful attention when drawing conclusions about whether AtN conversion occurs." @default.
- W4220978555 created "2022-04-03" @default.
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- W4220978555 date "2022-03-30" @default.
- W4220978555 modified "2023-09-27" @default.
- W4220978555 title "Ptbp1 knockdown in mouse striatum did not induce astrocyte-to-neuron conversion using HA-tagged labeling system" @default.
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- W4220978555 doi "https://doi.org/10.1101/2022.03.29.486202" @default.
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