Details

Autor(en) / Beteiligte

• Suzuki, Ikuo K.
• Gacquer, David
• Van Heurck, Roxane
• Kumar, Devesh
• Wojno, Marta
• Bilheu, Angéline
• Herpoel, Adèle
• Lambert, Nelle
• Cheron, Julian
• Polleux, Franck
• Detours, Vincent
• Vanderhaeghen, Pierre

Titel

Human-Specific NOTCH2NL Genes Expand Cortical Neurogenesis through Delta/Notch Regulation

Ist Teil von

• Cell, 2018-05, Vol.173 (6), p.1370-1384.e16

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2018

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• The cerebral cortex underwent rapid expansion and increased complexity during recent hominid evolution. Gene duplications constitute a major evolutionary force, but their impact on human brain development remains unclear. Using tailored RNA sequencing (RNA-seq), we profiled the spatial and temporal expression of hominid-specific duplicated (HS) genes in the human fetal cortex and identified a repertoire of 35 HS genes displaying robust and dynamic patterns during cortical neurogenesis. Among them NOTCH2NL, human-specific paralogs of the NOTCH2 receptor, stood out for their ability to promote cortical progenitor maintenance. NOTCH2NL promote the clonal expansion of human cortical progenitors, ultimately leading to higher neuronal output. At the molecular level, NOTCH2NL function by activating the Notch pathway through inhibition of cis Delta/Notch interactions. Our study uncovers a large repertoire of recently evolved genes active during human corticogenesis and reveals how human-specific NOTCH paralogs may have contributed to the expansion of the human cortex. [Display omitted] •Identification of >35 HS protein-coding genes expressed during human corticogenesis•NOTCH2NL human-specific paralogs of NOTCH2 expressed in human cortical progenitors•NOTCH2NL genes expand human cortical progenitors and their neuronal output•NOTCH2NL promotes Notch signaling through cis-inhibition of Delta/Notch interactions Human-specific NOTCH2NL expands cortical progenitors and neuronal output and thus may have contributed to the expansion of the human cortex.