Department of Biotechnology
inStem (Institute for Stem Cell Science and Regenerative Medicine)

LSD1 Regulates Neurogenesis in Human Neural Stem Cells Through the Repression of Human-Enriched Extracellular Matrix and Cell Adhesion Genes.

Publication Type

Journal Article

Date of Publication

February 8, 2024

Journal

Stem cells (Dayton, Ohio)

Volume/Issue

42/2

ISSN

1549-4918

Neurogenesis begins with neural stem cells undergoing symmetric proliferative divisions to expand and then switching to asymmetric differentiative divisions to generate neurons in the developing brain. Chromatin regulation plays a critical role in this switch. Histone lysine-specific demethylase LSD1 demethylates H3K4me1/2 and H3K9me1/2 but the mechanisms of its global regulatory functions in human neuronal development remain unclear. We performed genome-wide ChIP-seq of LSD1 occupancy, RNA-seq, and Histone ChIP-seq upon LSD1 inhibition to identify its repressive role in human neural stem cells. Novel downstream effectors of LSD1 were identified, including the Notch signaling pathway genes and human-neural progenitor-enriched extracellular matrix (ECM) pathway/cell adhesion genes, which were upregulated upon LSD1 inhibition. LSD1 inhibition led to decreased neurogenesis, and overexpression of downstream effectors mimicked this effect. Histone ChIP-seq analysis revealed that active and enhancer markers H3K4me2, H3K4me1, and H3K9me1 were upregulated upon LSD1 inhibition, while the repressive H3K9me2 mark remained mostly unchanged. Our work identifies the human-neural progenitor-enriched ECM pathway/cell adhesion genes and Notch signaling pathway genes as novel downstream effectors of LSD1, regulating neuronal differentiation in human neural stem cells.

Alternate Journal

Stem Cells

PubMed ID

38152966

PubMed Central ID

PMC10852026

Authors

Asha S Channakkar
Leora D'Souza
Aparajita Kumar
Kishan Kalia
Srilekha Prabhu
Kruttika Phalnikar
Puli Chandramouli Reddy
Bhavana Muralidharan

Keywords

Humans
Cell Adhesion
Histones
Neurogenesis
Histone Demethylases
Neural Stem Cells