Autocrine Mfge8 Signaling Prevents Developmental Exhaustion of the Adult Neural Stem Cell Pool

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dc.contributor.authorZhou, Yiko
dc.contributor.authorBond, Allison M.ko
dc.contributor.authorShade, Jamie E.ko
dc.contributor.authorZhu, Yunhuako
dc.contributor.authorDavis, Chung-ha O.ko
dc.contributor.authorWang, Xinyuanko
dc.contributor.authorSu, Yijingko
dc.contributor.authorYoon, Ki-Junko
dc.contributor.authorPhan, Alexander T.ko
dc.contributor.authorChen, William J.ko
dc.contributor.authorOh, Justin H.ko
dc.contributor.authorMarsh-Armstrong, Nicholasko
dc.contributor.authorAtabai, Kamranko
dc.contributor.authorMing, Guo-liko
dc.contributor.authorSong, Hongjunko
dc.identifier.citationCELL STEM CELL, v.23, no.3, pp.444 - 444-
dc.description.abstractAdult neurogenesis, arising from quiescent radialglia-like neural stem cells (RGLs), occurs throughout life in the dentate gyrus. How neural stem cells are maintained throughout development to sustain adult mammalian neurogenesis is not well understood. Here, we show that milk fat globule-epidermal growth factor (EGF) 8 (Mfge8), a known phagocytosis factor, is highly enriched in quiescent RGLs in the dentate gyrus. Mfge8-null mice exhibit decreased adult dentate neurogenesis, and furthermore, adult RGL-specific deletion of Mfge8 leads to RGL overactivation and depletion. Similarly, loss of Mfge8 promotes RGL activation in the early postnatal dentate gyrus, resulting in a decreased number of label-retaining RGLs in adulthood. Mechanistically, loss of Mfge8 elevates mTOR1 signaling in RGLs, inhibition of which by rapamycin returns RGLs to quiescence. Together, our study identifies a neural-stem-cell-enriched niche factor that maintains quiescence and prevents developmental exhaustion of neural stem cells to sustain continuous neurogenesis in the adult mammalian brain.-
dc.publisherCELL PRESS-
dc.titleAutocrine Mfge8 Signaling Prevents Developmental Exhaustion of the Adult Neural Stem Cell Pool-
dc.citation.publicationnameCELL STEM CELL-
dc.contributor.localauthorYoon, Ki-Jun-
dc.contributor.nonIdAuthorZhou, Yi-
dc.contributor.nonIdAuthorBond, Allison M.-
dc.contributor.nonIdAuthorShade, Jamie E.-
dc.contributor.nonIdAuthorZhu, Yunhua-
dc.contributor.nonIdAuthorDavis, Chung-ha O.-
dc.contributor.nonIdAuthorWang, Xinyuan-
dc.contributor.nonIdAuthorSu, Yijing-
dc.contributor.nonIdAuthorPhan, Alexander T.-
dc.contributor.nonIdAuthorChen, William J.-
dc.contributor.nonIdAuthorOh, Justin H.-
dc.contributor.nonIdAuthorMarsh-Armstrong, Nicholas-
dc.contributor.nonIdAuthorAtabai, Kamran-
dc.contributor.nonIdAuthorMing, Guo-li-
dc.contributor.nonIdAuthorSong, Hongjun-
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