Evidence map›Paper›PMID 33168629›Full record

ArticleThe Journal of biological chemistry

The Musashi proteins MSI1 and MSI2 are required for photoreceptor morphogenesis and vision in mice.

Jesse Sundar, Fatimah Matalkah, Bohye Jeong, Peter Stoilov, Visvanathan Ramamurthy

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.6field-weighted citation impact, top 16% 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

21 citing papers in PubMed, 26 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Dynamic changes in mRNA isoform usage during human retinal development.bioRxiv : the preprint server for biology · 2025
    Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Pathogenic Variants inInternational journal of molecular sciences · 2023
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Review
  20. Review
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

5 authors at 1 institution in 1 country.

Jesse SundarDepartment of Biochemistry, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, West Virginia, USA.
Fatimah MatalkahDepartment of Biochemistry, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, West Virginia, USA.
Bohye JeongDepartment of Biochemistry, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, West Virginia, USA.
Peter StoilovDepartment of Biochemistry, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, West Virginia, USA. Electronic address: pstoilov@hsc.wvu.edu.
Visvanathan RamamurthyDepartment of Biochemistry, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, West Virginia, USA; Department of Ophthalmology and Visual Sciences, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, West Virginia, USA; Department of Neuroscience, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, West Virginia, USA. Electronic address: ramamurthyv@hsc.wvu.edu.
West Virginia University · US

Funding

Photoreceptor neuron specific alternative splicing of messenger RNAR01EY025536 · NEI · WEST VIRGINIA UNIVERSITY · PI RAMAMURTHY, VISVANATHAN, STOILOV, PETER · 2016 to 2023
$3.3M
Importance of Small GTPases in Photoreceptor FunctionR01EY028035 · NEI · WEST VIRGINIA UNIVERSITY · PI Visvanathan Ramamurthy · 2017 to 2026
$3.2M
Biosynthesis and trafficking of phosphodiesterase in the retinal photoreceptorsR01EY031346 · NEI · WEST VIRGINIA UNIVERSITY · PI RAMAMURTHY, VISVANATHAN · 2020 to 2024
$1.9M
Ciliopathies and Photoreceptor FunctionR21EY027707 · NEI · WEST VIRGINIA UNIVERSITY · PI RAMAMURTHY, VISVANATHAN · 2017 to 2018
$413k
NEI NIH HHS R01 EY025536NEI NIH HHS R01 EY028035NEI NIH HHS R01 EY031346NEI NIH HHS R21 EY027707
6 · The paper itself

Abstract

The Musashi family of RNA-binding proteins is known for its role in stem-cell renewal and is a negative regulator of cell differentiation. Interestingly, in the retina, the Musashi proteins MSI1 and MSI2 are differentially expressed throughout the cycle of retinal development, with MSI2 protein displaying robust expression in the adult retinal tissue. In this study, we investigated the importance of Musashi proteins in the development and function of photoreceptor neurons in the retina. We generated a pan-retinal and rod photoreceptor neuron-specific conditional KO mouse lacking MSI1 and MSI2. Independent of the sex, photoreceptor neurons with simultaneous deletion of Msi1 and Msi2 were unable to respond to light and displayed severely disrupted photoreceptor outer segment morphology and ciliary defects. Mice lacking MSI1 and MSI2 in the retina exhibited neuronal degeneration, with complete loss of photoreceptors within 6 months. In concordance with our earlier studies that proposed a role for Musashi proteins in regulating alternative splicing, the loss of MSI1 and MSI2 prevented the use of photoreceptor-specific exons in transcripts critical for outer segment morphogenesis, ciliogenesis, and synaptic transmission. Overall, we demonstrate a critical role for Musashi proteins in the morphogenesis of terminally differentiated photoreceptor neurons. This role is in stark contrast with the canonical function of these two proteins in the maintenance and renewal of stem cells.

Indexed as

Alternative SplicingSynaptic TransmissionVision, OcularAnimalsCiliaMiceMice, KnockoutNerve Tissue ProteinsPhotoreceptor Cells, VertebrateRetinal DegenerationRNA-Binding ProteinsMsi1h protein, mouseMsi2h protein, mouseNerve Tissue ProteinsRNA-Binding ProteinsMsi1Msi2MusashiphotoreceptorretinaRNA-binding proteinsplicing

Identifiers

PMID33168629
PMCPMC7948980
OpenAlexW3098883767

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.