Articles tagged with Hair Cells
Researchers have identified a potential new approach to restore hearing loss by activating the EGF receptor signaling pathway in cochlear support cells. The study found that this pathway can trigger cell proliferation and regeneration of sensory hair cells, which may lead to improved hearing restoration.
Researchers at Harvard Medical School have finally identified the elusive sensor protein responsible for hearing and balance. The discovery reveals that TMC1 forms a sound-activated pore that converts sound and head movement into nerve signals that travel to the brain, enabling hearing and balance.
A new study by Harvard Medical School researchers identifies three molecularly distinct subtypes of neurons responsible for transmitting information from the inner ear to the brain. These subtypes are selectively lost in aging mice and do not emerge properly in deaf-mouse models, suggesting a critical role in age-related hearing loss.
A study published in PNAS reveals that the spatial organization of outer hair cells is crucial for amplifying and tuning sound. Researchers found that these cells can only produce high hearing sensitivity when arranged in their natural configuration with respect to surrounding structures.
Researchers have identified a potential treatment for noise-induced hearing loss, where osmotic stabilization of fluid volume in the inner ear after exposure can prevent subsequent hearing loss. Increasing solute concentration in perilymph reduces endolymph volume and helps preserve synaptic ribbons on hair cells.
Researchers have created a novel approach to restoring hearing by attaching bio-conjugated molecules to the cochlea, the shell-shaped ear bone. The molecules stimulate cell growth and connectivity in damaged inner ear cells, potentially treating hidden hearing loss and tinnitus.
Researchers found that fish survive polluted stormwater but still suffer sensory damage, affecting food detection, predator sensing, and navigation. Soil-based filtering systems like rain gardens show promise in improving survival, but the benefit varies among species.
IU researchers successfully grew hairy skin from mouse pluripotent stem cells, providing a breakthrough for modeling disease and treating skin disorders. The technique builds on past work creating inner ear cells from stem cells and could lead to new therapies for alopecia, acne, and skin cancers.
Researchers at Case Western Reserve University discovered a gene that helps zebrafish convert water motion into electrical impulses, similar to human hearing. The shared gene allows fish to sense water flow direction and may also inform future studies on human hair cell mechanotransduction.
Researchers used CRISPR-Cas9 technology to disrupt a genetic mutation causing deafness in mice, preserving some hearing. The treatment reversed hair cell damage and improved inner ear function.
Researchers develop CRISPR-Cas9 gene editing therapy to prevent hearing loss in a mouse model of human genetic progressive deafness. The therapy delivers the protein complex directly into sound-sensing cells, disrupting the mutation that causes cell death and preserving some hearing.
Researchers identify Protein Daple as crucial for both single-cell and organ-wide directionality in hair cells of the inner ear. Without Daple, mice exhibit developmental defects in hair bundles, affecting sound wave detection and processing.
Researchers at Case Western Reserve University School of Medicine have developed a gene therapy that can prevent the progression of hearing loss and preserve hearing in people with Usher syndrome type III, a form of hereditary hearing loss linked to defects in sensory hair cells.
A new study by Cedars-Sinai Medical Center suggests that cardiac stem cell infusions could reverse aging in the human heart. Cardiosphere-derived cells secrete tiny vesicles containing RNA and proteins, which may turn back the clock for age-related heart conditions.
A USC-led study published in PNAS has revealed a molecular 'how to' guide for driving individual skin cells to self-organize into organoids that can produce hair. The researchers successfully stimulated adult organoids to continue their development and produce 40% more hair than newborn organoids.
Researchers at UT Southwestern Medical Center discovered that a protein called KROX20 is essential for hair pigmentation and a gene called SCF determines the color of hair. The study found that deleting these genes leads to gray or white hair in mice, providing potential insights into balding and aging.
Researchers identified two proteins regulating hair cell formation in plant roots, enabling plants to thrive under phosphorus starvation. GRP8 overexpression increased root-hair cells, leading to improved phosphate uptake and biomass production.
Researchers found that a protein called Forkhead Box O3 (Foxo3) protects outer hair cells from damage, allowing some individuals to recover from noise-induced hearing loss. The study could provide new hope for preventing or treating hearing impairment.
Research shows complex partnership between ear and brain can compensate for significant inner ear damage, leading to normal audiogram but difficulty hearing in certain situations. The study highlights the need for more challenging behavioral tests to diagnose patients with 'hidden hearing loss'.
Scientists at St. Jude Children's Research Hospital have successfully regenerated auditory hair cells in adult mice using genetic manipulation. The research marks a significant step towards treating hearing loss in humans, which affects millions worldwide.
Researchers develop protocol to efficiently grow cochlear progenitor cells into large colonies with high capacity for differentiation, offering potential treatment for hearing loss. The approach, leveraging Wnt signaling and histone deacetylase inhibition, enables regeneration of sensory hair cells in multiple mammalian species.
Researchers have discovered a drug combination that can regenerate hair cells in the inner ear, offering a potential new way to treat hearing loss. The treatment involves expanding progenitor cells and stimulating them to become mature hair cells.
A two-step process has been developed to multiply stem cells found in the inner ear and convert them into hair cells, restoring partial hearing to mice. The researchers generated over 11,500 hair cells from a single mouse, offering hope for full hearing restoration in those with damaged hair cells.
Researchers from Brigham and Women's Hospital and Massachusetts Institute of Technology have developed a method to grow large quantities of inner ear progenitor cells that convert into functional hair cells. The technique shows potential as a therapy for patients with hearing loss, particularly those caused by loud noises or toxic drugs.
Scientists at Harvard Medical School have developed a new gene-delivery therapy that successfully restores partial hearing and balance in mice born with genetic hearing loss. The treatment uses a modified adeno-associated virus (AAV) wrapped in protective bubbles to penetrate hair cells, which are notoriously difficult to treat.
Researchers find that decapitation of primary cilia, a process linked to cellular duplication, is triggered by the presence of Inpp5e protein, which helps stabilize cilia. The study also reveals that wire-like structures formed in cilia contribute to decapitation, and that this process is essential for full cilia disassembly.
Researchers aim to remove senescent cells, which accumulate with age, to regrow hair, improve organ function and combat aging. However, hurdles include safety issues, off-target effects and high costs, limiting translation to humans.
Researchers identified mesenchymal-derived BMPs as a crucial mechanism in determining sweat gland versus hairy cell fates. The study found increased expression of BMP and FGF genes at week 17 in human scalp skin, coinciding with the shift from hair to sweat-bud formation.
Researchers discovered a cocktail of sea anemone proteins that can repair damaged mouse cochlear hair cells in as little as 8 minutes. The study suggests that these proteins could potentially be used to treat patients with acute hearing loss.
A study warns that teenagers are increasingly experiencing tinnitus, a symptom of hearing loss, due to frequent earphone use and exposure to loud places. This can lead to chronic hearing loss by age 30-40 if not addressed.
USC researchers studied epigenetic signals regulating Atoh1, a critical factor in hair cell development and sensory structure formation. The studies aim to develop new therapies to stimulate hair cell regeneration in individuals with hearing loss or deafness.
Two independent groups studying gut microvilli have found striking parallels with the protein complexes that organize inner ear hair cell stereocilia. The findings suggest that evolution may have borrowed successful biological structures to create new functions, connecting the gut and the ear.
Researchers found that brush border microvilli and stereocilia share strikingly similar interaction modes, despite different functions. The study reveals a common mechanism for the formation of tip-link complexes in both structures.
Researchers at St. Jude Children's Research Hospital identified a small molecule that inhibits the function of 'disordered' protein p27, which may aid regeneration of sensory hair cells to combat hearing loss. The discovery raises broader hopes for drug development targeting disordered proteins in various diseases.
Inner ear cells in newborn rodents practice processing sounds through a self-stimulation process involving chloride ion channels. This process helps establish and refine connections between the ear and brain, enabling proper hearing from an early age.
Researchers found that type II afferent neurons in the inner ear respond to tissue damage similar to pain-sensing nerve cells. This discovery may lead to new treatments for hyperacusis, a condition characterized by increased sensitivity to loud noises.
Researchers have developed an online database called Hair-GEL that provides a bird's eye view of hair follicle formation. By analyzing the genetic activity of skin cells during fetal development, scientists can gain insights into how stem cells and niche cells interact to form functional hair follicles.
Researchers at Rockefeller University have identified two genes vital for hair cell production in young mice. Altering these proteins' expression can induce new hair cells in matured utricles, providing a potential target for regenerating lost sensors in humans.
Researchers have created a high-resolution gene expression map of newborn mouse inner ear cells, providing insight into their development and differentiation. The findings may lead to the development of cell-based therapies for hearing loss and balance disorders.
A new study identified RFX transcription factors as key regulators of genes that help auditory hair cells grow. Researchers used mice with fluorescent markers to analyze gene expression and found that these proteins play a critical role in the development and survival of hair cells.
Researchers found that the vestibular organ can adapt its sensitivity to movement signals, allowing for smooth balance and posture control. This is achieved through a process where the spinal cord sends efferent signals to the hair cells in the inner ear, reducing their sensitivity.
Researchers studied zebrafish to understand how support cells contribute to hair cell regeneration after damage or death. Approximately half of the dividing support cells differentiated into hair cells, while the rest self-renewed, maintaining a reserve force for regenerative action.
Research suggests that increased connections between sensory cells and nerve cells in the inner ear of aging mice may be contributing to age-related hearing loss. This finding could lead to new ideas for treating or preventing this condition in humans.
Researchers at the Molecular Medicine Institute and University College London Ear Institute have created a protocol to produce inner ear hair cells, crucial for hearing and balance. The study's success suggests that similar strategies might work in humans, paving the way for cell transplantation therapies or high-throughput drug screens.
The UNSW research provides new insight into hearing loss and improves cochlear implant functionality, enabling better sound localisation in noisy conditions and protecting against noise damage. The study's findings suggest a potential link to age-related hearing loss and aim to develop more accurate soundscapes.
Scientists developed a method to induce human hair growth using pluripotent stem cells, providing an unlimited source of cells for transplantation and improving upon existing methods. The research team successfully coaxed human pluripotent stem cells to become dermal papilla cells, which regulate hair-follicle formation and growth cycle.
Scientists have discovered that blocking the Notch pathway enables cochlear progenitor cells to proliferate and regenerate hair cells, potentially leading to new treatments for hearing loss. The study reveals a new function of Notch signaling in limiting proliferation and regeneration potential of postnatal cochlear progenitor cells.
Researchers at The Scripps Research Institute (TSRI) have discovered how a mutant gene called Tmie can cause deafness from birth. They found that reintroducing the gene in mice restored the process underpinning hearing, suggesting new treatment options for hearing loss.
Scientists uncover that newborn mice's ear rapidly regenerates lost supporting cells, preserving hearing. This discovery reveals a previously unknown ability and opens doors for finding new approaches to regenerate auditory cells and restore hearing in humans.
Researchers discovered molecular brakes Hey1 and Hey2 regulate hair cell generation in the inner ear. Without them, cells are generated too early and disorganized, leading to hearing problems.
Researchers identify Bmp7 molecule as key player in establishing auditory system organization and positioning of sensory cells. The study offers insight into how hair cells learn to detect specific frequencies, shedding light on a fundamental principle of the auditory system.
New research reveals that supporting cells in the ear can turn into hair cells in newborn mice, leading to potential cell replacement strategies for adults and new treatment approaches for deafness. The study found that blocking the Notch signaling pathway increases the formation of new hair cells from nearby Lgr5-expressing cells.
Researchers at the University of Pennsylvania School of Medicine have successfully converted adult human cells into epithelial stem cells that can regenerate human skin and hair follicles. The breakthrough could potentially enable hair regeneration in people, but further work is needed to address other cell types involved in hair growth.
A new Stanford study overturns the long-held theory on how humans perceive sound, challenging the 30-year-old model of adaptation. The research found that calcium is not necessary for adaptation in mammalian auditory hair cells, opening up new avenues for understanding and potentially treating hearing loss.
Researchers have identified a key channel crucial for hearing, contradicting the long-held theory that TMC proteins are the transduction channel. The new findings suggest that the actual channel may be a distinct membrane protein expressed alongside other key molecules.
Researchers at the National Institutes of Health developed a sound preconditioning protocol that protects mice from ototoxic drug-induced hearing loss, inducing heat shock protein expression in the ear. The study suggests that sound therapy may protect hearing in patients requiring treatment with ototoxic drugs.
Researchers developed a sound preconditioning protocol that protected mice from drug-induced hearing loss and increased expression of heat shock proteins in the inner ear. This finding suggests that sound therapy may protect hearing in patients requiring treatment with ototoxic drugs.
A new mouse model suggests that overexpressing the Isl1 gene can protect hair cells from degeneration and promote survival after loud noise exposure. This finding has implications for treating age-related and noise-induced hearing loss in humans.
The use of stem cells, gene therapy, and neurotrophic factors has been shown to play a crucial role in the regeneration of inner ear hair cells. Cochlear gene therapy has also been successfully used in treating neurosensory hearing loss and other inner ear disorders.
A mutation in the TRIC gene disrupts tight cell junctions, creating a toxic environment that leads to cochlear hair cell loss. Researchers have created a mouse model to study human TRIC-associated deafness and explore potential treatments for restoring tight junction function.