Abstract:
:Here, we ask how neural stem cells (NSCs) transition in the developing neocortex from a rapidly to a slowly proliferating state, a process required to maintain lifelong stem cell pools. We identify LRIG1, known to regulate receptor tyrosine kinase signaling in other cell types, as a negative regulator of cortical NSC proliferation. LRIG1 is expressed in murine cortical NSCs as they start to proliferate more slowly during embryogenesis and then peaks postnatally when they transition to give rise to a portion of adult NSCs. Constitutive or acute loss of Lrig1 in NSCs over this developmental time frame causes stem cell expansion due to increased proliferation. LRIG1 controls NSC proliferation by associating with and negatively regulating the epidermal growth factor receptor (EGFR). These data support a model in which LRIG1 dampens the stem cell response to EGFR ligands within the cortical environment to slow their proliferation as they transition to postnatal adult NSCs.
journal_name
Cell Repjournal_title
Cell reportsauthors
Jeong D,Lozano Casasbuenas D,Gengatharan A,Edwards K,Saghatelyan A,Kaplan DR,Miller FD,Yuzwa SAdoi
10.1016/j.celrep.2020.108257subject
Has Abstractpub_date
2020-10-13 00:00:00pages
108257issue
2issn
2211-1247pii
S2211-1247(20)31246-8journal_volume
33pub_type
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