Evidence map›Paper›PMID 34768944›Full record

ArticleInternational journal of molecular sciences2021

Functional Availability of ON-Bipolar Cells in the Degenerated Retina: Timing and Longevity of an Optogenetic Gene Therapy.

Jakub Kralik, Sonja Kleinlogel

Open access · goldAbstract read
In one paragraph

Article in International journal of molecular sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.0field-weighted citation impact, top 25% 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

11 citing papers in PubMed, 18 citations in OpenAlex.

  1. Review
  2. Optogenetic vision restoration in the face of secondary and tertiary remodeling in the rd1 mouse retina.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. The Bovine Ex Vivo Retina: A Versatile Model for Retinal Neuroscience.Investigative ophthalmology & visual science · 2023
    Article
  8. Article
  9. Article
  10. Article
  11. A systematic comparison of optogenetic approaches to visual restoration.Molecular therapy. Methods & clinical development · 2022
    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

2 authors at 1 institution in 1 country.

Jakub KralikTranslational Optogenetics Group, Department of Physiology, University of Bern, Bühlplatz 5, 3012 Bern, Switzerland.ORCID 0000-0001-5216-9818
Sonja KleinlogelTranslational Optogenetics Group, Department of Physiology, University of Bern, Bühlplatz 5, 3012 Bern, Switzerland.ORCID 0000-0001-8272-7833
University of Bern · CH

Funding

Swiss National Science Foundation 31003A_176065
6 · The paper itself

Abstract

Degenerative diseases of the retina are responsible for the death of photoreceptors and subsequent loss of vision in patients. Nevertheless, the inner retinal layers remain intact over an extended period of time, enabling the restoration of light sensitivity in blind retinas via the expression of optogenetic tools in the remaining retinal cells. The chimeric Opto-mGluR6 protein represents such a tool. With exclusive ON-bipolar cell expression, it combines the light-sensitive domains of melanopsin and the intracellular domains of the metabotropic glutamate receptor 6 (mGluR6), which naturally mediates light responses in these cells. Albeit vision restoration in blind mice by Opto-mGluR6 delivery was previously shown, much is left to be explored in regard to the effects of the timing of the treatment in the degenerated retina. We performed a functional evaluation of Opto-mGluR6-treated murine blind retinas using multi-electrode arrays (MEAs) and observed long-term functional preservation in the treated retinas, as well as successful therapeutical intervention in later stages of degeneration. Moreover, the treatment decreased the inherent retinal hyperactivity of the degenerated retinas to levels undistinguishable from healthy controls. Finally, we observed for the first time micro electroretinograms (mERGs) in optogenetically treated animals, corroborating the origin of Opto-mGluR6 signalling at the level of mGluR6 of ON-bipolar cells.

Indexed as

AnimalsBlindnessCyclic Nucleotide Phosphodiesterases, Type 6Disease Models, AnimalElectroretinographyGenetic TherapyMiceMice, Inbred C3HMice, Inbred C57BLMice, Mutant StrainsOptogeneticsReceptors, Metabotropic GlutamateRetinal Bipolar CellsRetinal DegenerationSignal TransductionVision, OcularCyclic Nucleotide Phosphodiesterases, Type 6metabotropic glutamate receptor 6Pde6b protein, mouseReceptors, Metabotropic Glutamateganglion cellsmGluR6micro ERGsmulti-electrode array recordingsON-bipolar cellsoptogenetic gene therapyOpto-GPCRsrd1 mouse lineretinal degenerationvision restoration

Identifiers

PMID34768944
PMCPMC8584043
OpenAlexW3209301727

What OpenQuestion holds

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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.