Evidence map›Paper›PMID 33318601›Full record

ReviewCell death and differentiation2021

Building inner ears: recent advances and future challenges for in vitro organoid systems.

Wouter H van der Valk, Matthew R Steinhart, Jingyuan Zhang, Karl R Koehler

Open access · hybridAbstract readReview
In one paragraph

Review in Cell death and differentiation, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
3.2field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

42 citing papers in PubMed, 67 citations in OpenAlex.

  1. Inner Ear Organoids: Recent Progress and Challenges.Stem cell reviews and reports · 2026
    Review
  2. Article
  3. Article
  4. Review
  5. Review
  6. Review
  7. Review
  8. Review
  9. Review
  10. Advances in Microfluidic Cochlea-On-A-Chip.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Review
  11. The Reconstruction of Peripheral Auditory Circuit: Recent Advances and Future Challenges.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Review
  12. Article
  13. Review
  14. Review
  15. Review
  16. Application of organoids in otolaryngology: head and neck surgery.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2024
    Review
  17. Article
  18. Review
  19. Inner Ear Organoids: Strengths and Limitations.Journal of the Association for Research in Otolaryngology : JARO · 2024
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 2 countries.

Wouter H van der ValkDepartment of Otorhinolaryngology and Head & Neck Surgery, Leiden University Medical Center, Leiden, Netherlands.
Matthew R SteinhartDepartment of Otolaryngology, Boston Children's Hospital, Boston, MA, 02115, USA.
Jingyuan ZhangDepartment of Otolaryngology, Boston Children's Hospital, Boston, MA, 02115, USA.
Karl R KoehlerDepartment of Otolaryngology, Boston Children's Hospital, Boston, MA, 02115, USA. karl.koehler@childrens.harvard.edu.
Harvard University · USBoston Children's Hospital · USLeiden University Medical Center · NL

Funding

Engineering multi-lineage inner ear organoidsR01DC017461 · NIDCD · INDIANA UNIVERSITY INDIANAPOLIS · PI Karl Russell Koehler · 2019 to 2026
$4.7M
Modeling Otic Neurogenesis in Human Stem Cell-Derived OrganoidsR03DC015624 · NIDCD · INDIANA UNIVERSITY INDIANAPOLIS · PI KOEHLER, KARL RUSSELL · 2016 to 2018
$471k
Modeling Neurofibromatosis Type 2 with Inner Ear OrganoidsF30DC018715 · NIDCD · INDIANA UNIVERSITY INDIANAPOLIS · PI STEINHART, MATTHEW REED · 2020 to 2024
$241k
NIDCD NIH HHS F30 DC018715NIDCD NIH HHS R01 DC017461NIDCD NIH HHS R03 DC015624
6 · The paper itself

Abstract

While inner ear disorders are common, our ability to intervene and recover their sensory function is limited. In vitro models of the inner ear, like the organoid system, could aid in identifying new regenerative drugs and gene therapies. Here, we provide a perspective on the status of in vitro inner ear models and guidance on how to improve their applicability in translational research. We highlight the generation of inner ear cell types from pluripotent stem cells as a particularly promising focus of research. Several exciting recent studies have shown how the developmental signaling cues of embryonic and fetal development can be mimicked to differentiate stem cells into "inner ear organoids" containing otic progenitor cells, hair cells, and neurons. However, current differentiation protocols and our knowledge of embryonic and fetal inner ear development in general, have a bias toward the sensory epithelia of the inner ear. We propose that a more holistic view is needed to better model the inner ear in vitro. Moving forward, attention should be made to the broader diversity of neuroglial and mesenchymal cell types of the inner ear, and how they interact in space or time during development. With improved control of epithelial, neuroglial, and mesenchymal cell fate specification, inner ear organoids would have the ability to truly recapitulate neurosensory function and dysfunction. We conclude by discussing how single-cell atlases of the developing inner ear and technical innovations will be critical tools to advance inner ear organoid platforms for future pre-clinical applications.

Indexed as

Models, BiologicalAnimalsCell Culture TechniquesCell DifferentiationCells, CulturedEar, InnerEpitheliumHair Cells, Auditory, InnerHumansOrganoidsPluripotent Stem Cells

Identifiers

PMID33318601
PMCPMC7853146
OpenAlexW3112932588

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.