Evidence map›Paper›PMID 24821344›Full record

ArticleMolecular therapy : the journal of the American Society of Gene Therapy2014

Restoration of the majority of the visual spectrum by using modified Volvox channelrhodopsin-1.

Hiroshi Tomita, Eriko Sugano, Namie Murayama, Taku Ozaki, Fumiaki Nishiyama, Kitako Tabata, Maki Takahashi, Takehiko Saito, Makoto Tamai

Open access · hybridAbstract read
In one paragraph

Article in Molecular therapy : the journal of the American Society of Gene Therapy, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 13% 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

35 citing papers in PubMed, 1 synthesis or guideline pooled it, 72 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Review
  6. Sensing a rainbow of colors: algal photoreceptors.Frontiers in plant science · 2025
    Review
  7. Optogenetic Vision Restoration.Cold Spring Harbor perspectives in medicine · 2024
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Optogenetic Therapy for Visual Restoration.International journal of molecular sciences · 2022
    Review
  14. Article
  15. Optogenetics for light control of biological systems.Nature reviews. Methods primers · 2022
    Article
  16. Review
  17. Article
  18. Article
  19. Optogenetics-Mediated Gene Therapy for Retinal Diseases.Advances in experimental medicine and biology · 2021
    Review
  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

9 authors at 4 institutions in 1 country.

Hiroshi TomitaLaboratory of Visual Neuroscience, Department of Chemistry and Bioengineering, Iwate University Graduate School of Engineering, Morioka, Iwate, Japan; Clinical Research, Innovation and Education Center, Tohoku University Hospital, Sendai, Miyagi, Japan. Electronic address: htomita@iwate-u.ac.jp.
Eriko SuganoLaboratory of Visual Neuroscience, Department of Chemistry and Bioengineering, Iwate University Graduate School of Engineering, Morioka, Iwate, Japan.
Namie MurayamaLaboratory of Visual Neuroscience, Department of Chemistry and Bioengineering, Iwate University Graduate School of Engineering, Morioka, Iwate, Japan.
Taku OzakiDepartment of Ophthalmology, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.
Fumiaki NishiyamaLaboratory of Visual Neuroscience, Department of Chemistry and Bioengineering, Iwate University Graduate School of Engineering, Morioka, Iwate, Japan.
Kitako TabataLaboratory of Visual Neuroscience, Department of Chemistry and Bioengineering, Iwate University Graduate School of Engineering, Morioka, Iwate, Japan.
Maki TakahashiLaboratory of Visual Neuroscience, Department of Chemistry and Bioengineering, Iwate University Graduate School of Engineering, Morioka, Iwate, Japan.
Takehiko SaitoLaboratory of Visual Neuroscience, Department of Chemistry and Bioengineering, Iwate University Graduate School of Engineering, Morioka, Iwate, Japan.
Makoto TamaiTohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.
Iwate University · JPHirosaki University · JPTohoku University · JPTohoku University Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We previously showed that blind rats whose vision was restored by gene transfer of Chlamydomonas channelrhodopsin-2 (ChR2) could only detect wavelengths less than 540 nm because of the action spectrum of the transgene product. Volvox-derived channelrhodopsin-1, VChR1, has a broader spectrum than ChR2. However, the VChR1 protein was mainly localized in the cytoplasm and showed weak ion channel properties when the VChR1 gene was transfected into HEK293 cells. We generated modified Volvox channelrhodopsin-1 (mVChR1), which is a chimera of Volvox channelrhodopsin-1 and Chlamydomonas channelrhodopsin-1 and demonstrated increased plasma membrane integration and dramatic improvement in its channel properties. Under whole-cell patch clamp, mVChR1-expressing cells showed a photo-induced current upon stimulation at 468-640 nm. The evoked currents in mVChR1-expressing cells were ~30 times larger than those in VChR1-expressing cells. Genetically, blind rats expressing mVChR1 via an adeno-associated virus vector regained their visual responses to light with wavelengths between 468 and 640 nm and their recovered visual responses were maintained for a year. Thus, mVChR1 is a candidate gene for gene therapy for restoring vision, and gene delivery of mVChR1 may provide blind patients access to the majority of the visible light spectrum.

Indexed as

AnimalsBlindnessChlamydomonasDependovirusGenetic TherapyGenetic VectorsHEK293 CellsHumansRatsRecombinant Fusion ProteinsRetinaRhodopsinVolvoxRecombinant Fusion ProteinsRhodopsin

Identifiers

PMID24821344
PMCPMC4435592
OpenAlexW1989252491

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.