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.
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http://dx.doi.org/10.1016/j.celrep.2023.112545 | DOI Listing |
Chemosphere
December 2024
Department of Life Science, School of Life Science, National Taiwan Normal University, Taipei, Taiwan. Electronic address:
Acidification of freshwater due to human activities is a widespread environmental problem. Its effects on the sensorimotor responses of fish, particularly during embryonic stages, may affect population fitness. To address this, zebrafish embryos were exposed to water at pH 7, 5 and 4.
View Article and Find Full Text PDFJ Vis Exp
November 2024
Department of Otolaryngology - Head & Neck Surgery, Johns Hopkins University School of Medicine.
The living human inner ear is challenging to study because it is encased within dense otic capsule bone that limits access to biological tissue. Traditional temporal bone histopathology methods rely on lengthy, expensive decalcification protocols that take 9-10 months and reduce the types of tissue analysis possible due to RNA degradation. There is a critical need to develop methods to access fresh human inner ear tissue to better understand otologic diseases, such as Ménière's disease, at the cellular and molecular level.
View Article and Find Full Text PDFDevelopment
December 2024
Department of Medicine and Life Sciences, Universitat Pompeu Fabra - Parc de Recerca Biomèdica de Barcelona, Carrer del Doctor Aiguader 8808003 Barcelona, Spain.
Human inner ear organoids are three-dimensional tissular structures grown in vitro that recapitulate some aspects of the fetal inner ear and allow the differentiation of inner ear cell types. These organoids offer a system in which to study human inner ear development, mutations causing hearing loss and vertigo, and new therapeutic drugs. However, the extent to which such organoids mimic in vivo human inner ear development and cellular composition remains unclear.
View Article and Find Full Text PDFInt J Mol Sci
October 2024
Nantong Laboratory of Development and Diseases, School of Life Sciences, Co-Innovation Center of Neuroregeneration, Nantong University, Qixiu Road 19, Nantong 226001, China.
The development of sensory hair cells (HCs) is closely linked to hearing loss. There are still many unidentified genes that may play a crucial role in HC development and function. Glutamine synthetase, Glul, is expressed in sensory hair cells and auditory organs.
View Article and Find Full Text PDFInt J Mol Sci
October 2024
Department of Pathology and Laboratory Medicine, The University of Kansas Medical Center, Kansas City, KS 66126, USA.
Prenatal ethanol exposure can cause a broad range of abnormalities in newborns known as Fetal Alcohol Spectrum Disorder (FASD). Despite significant progress in understanding the disease mechanisms of FASD, there remains a strong global need for effective therapies. To evaluate the therapeutic potential of sulforaphane (SFN), an active compound extracted from cruciferous vegetables, in preventing FASD, ethanol-exposed zebrafish embryos were pretreated, co-treated, or post-treated with various concentrations of SFN.
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