Transcriptional dynamics of delaminating neuroblasts in the mouse otic vesicle.

Cell Rep

Department of Otolaryngology Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA, USA; Institute for Stem Cell Biology & Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA. Electronic address:

Published: June 2023


Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

An abundance of research has recently highlighted the susceptibility of cochleovestibular ganglion (CVG) neurons to noise damage and aging in the adult cochlea, resulting in hearing deficits. Furthering our understanding of the transcriptional cascades that contribute to CVG development may provide insight into how these cells can be regenerated to treat inner ear dysfunction. Here we perform a high-depth single-cell RNA sequencing analysis of the E10.5 otic vesicle and its surrounding tissues, including CVG precursor neuroblasts and emerging CVG neurons. Clustering and trajectory analysis of otic-lineage cells reveals otic markers and the changes in gene expression that occur from neuroblast delamination toward the development of the CVG. This dataset provides a valuable resource for further identifying the mechanisms associated with CVG development from neurosensory competent cells within the otic vesicle.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10592509PMC
http://dx.doi.org/10.1016/j.celrep.2023.112545DOI Listing

Publication Analysis

Top Keywords

otic vesicle
12
cvg neurons
8
cvg development
8
cvg
6
transcriptional dynamics
4
dynamics delaminating
4
delaminating neuroblasts
4
neuroblasts mouse
4
otic
4
mouse otic
4

Similar Publications

Epithelial fusion is mediated by a partial epithelial-mesenchymal transition.

Biol Open

September 2025

National Centre for Biological Sciences, Tata Institute for Fundamental Research, GKVK PO, Bellary Road, Bangalore, 560065, India.

Epithelial fusion is a fundamental morphogenetic process critical for the closure and compartmentalisation of developing organs. While widely studied in systems such as neural tube and palatal closure, the cellular transitions that enable fusion remain poorly understood. Here, we investigate epithelial fusion during chick otic vesicle (OV) closure and identify a transient population of cells at the epithelial interface that mediate this process.

View Article and Find Full Text PDF

To identify novel Six1-interacting proteins, we previously screened the fly interactome for Sine oculis-binding partners whose orthologues are also expressed in Xenopus embryos. We identified a zinc-finger MYM-containing protein-Zmym2-based on its sequence similarity in a few domains also found in the Drosophila and vertebrate Sine oculis-binding proteins (Sobp). Because recent studies established Zmym2 as a transcriptional repressor that interacts with Six4 during renal development, herein we assessed whether it interacts with Six1, can modify Six1's transcriptional activity, and is involved in cranial neural crest or placode gene expression.

View Article and Find Full Text PDF

Assessing the toxicity of bongkrekic acid in zebrafish embryos.

Comp Biochem Physiol C Toxicol Pharmacol

October 2025

Department of Life Science, School of Life Science, National Taiwan Normal University, Taipei, Taiwan. Electronic address:

Bongkrekic acid (BA) is a potent bacterial toxin found in certain fermented foods, which poses a serious risk to human health through rapid multi-organ failure. Its toxic effects on the early stage of vertebrates remain poorly understood. In this study, we addressed this gap using zebrafish embryos as a model to evaluate BA's developmental toxicity.

View Article and Find Full Text PDF

The three orthogonally arranged semicircular canals and their sensory organs, cristae, of the inner ear are responsible for detecting angular head movements. A main functional component of this vestibular apparatus is the evolutionarily conserved unit of the anterior and posterior canals joined by a central stalk, the common crus. A resorption process (removal of epithelial cells) carves out these three connecting structures from an epithelial outpocket of the developing otic vesicle known as the vertical canal pouch.

View Article and Find Full Text PDF

Multifaceted roles of sonic hedgehog signaling in mammalian inner ear development.

Dev Biol

August 2025

Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, 91125, USA. Electronic address:

The inner ear is an intricate structure that houses six sensory organs responsible for both hearing and balance. The development of the inner ear begins with the formation of the otic placode, a transient ectodermal thickening that emerges early during embryonic development. The otic placode undergoes a series of morphological changes, from thickening to invagination and then pinching off from the ectoderm to form the otic vesicle, which further differentiates into the specialized structures of the inner ear.

View Article and Find Full Text PDF