Genetic mutations in GLP-1/Notch pathway reveal distinct mechanisms of Notch signaling in germline stem cell regulation.

ABSTRACT: The Notch signaling pathway is crucial for germline stem cell (GSC) regulation in Caenorhabditis elegans, yet the molecular and biological consequences of GLP-1/Notch mutations remain poorly understood. This study systematically analyzes commonly used and pathological glp-1 loss- (lf) and gain-of-function (gf) mutations to investigate their effects on Notch activity at nascent transcript (ATS), mRNA, and germline levels. Using complementary direct readouts of Notch activation, including sygl-1 activation sites, mRNA levels, and germline functional assays of the Notch-responsive GSC pool and progenitor zone (PZ), we demonstrate that the severity of glp-1 mutations is dependent on their position within the GLP-1 protein. Among the commonly used glp-1 alleles we examined, NICD mutations reduc

SUBMITTER: John NS 

PROVIDER: S-EPMC12937919 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature