Evidence map›Paper›PMID 33627402›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2021

Chemokine CCL5 promotes robust optic nerve regeneration and mediates many of the effects of CNTF gene therapy.

Lili Xie, Yuqin Yin, Larry Benowitz

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
5.6field-weighted citation impact, top 3% 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

49 citing papers in PubMed, 71 citations in OpenAlex.

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  11. The neuroimmune interface in retinal regeneration.Progress in retinal and eye research · 2025
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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

3 authors at 2 institutions in 1 country.

Lili XieLaboratories for Neuroscience Research in Neurosurgery, Department of Neurosurgery, Boston Children's Hospital, Boston, MA 02115.
Yuqin YinLaboratories for Neuroscience Research in Neurosurgery, Department of Neurosurgery, Boston Children's Hospital, Boston, MA 02115.
Larry BenowitzLaboratories for Neuroscience Research in Neurosurgery, Department of Neurosurgery, Boston Children's Hospital, Boston, MA 02115; larry.benowitz@childrens.harvard.edu.
Harvard University · USBoston Children's Hospital · US

Funding

SYNAPTIC MECHANISMS IN HIPPOCAMPAL EPILEPTOGENESISP30HD018655 · NICHD · CHILDREN'S HOSPITAL BOSTON · PI POMEROY, SCOTT LOREN · 1985 to 2015
$26.2M
Viral ModuleP30EY012196 · NEI · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI ZHIGANG HE · 1998 to 2026
$21.3M
Super-Resolution ImagingP30NS072030 · NINDS · HARVARD MEDICAL SCHOOL · PI REGEHR, WADE G · 2011 to 2020
$5.8M
Mouse Neurodevelopmental Behavior CoreU54HD090255 · NICHD · BOSTON CHILDREN'S HOSPITAL · PI POMEROY, SCOTT LOREN · 2016 to 2020
$5.2M
NEI NIH HHS P30 EY012196NICHD NIH HHS P30 HD018655NICHD NIH HHS U54 HD090255NINDS NIH HHS P30 NS072030
6 · The paper itself

Abstract

Ciliary neurotrophic factor (CNTF) is a leading therapeutic candidate for several ocular diseases and induces optic nerve regeneration in animal models. Paradoxically, however, although CNTF gene therapy promotes extensive regeneration, recombinant CNTF (rCNTF) has little effect. Because intraocular viral vectors induce inflammation, and because CNTF is an immune modulator, we investigated whether CNTF gene therapy acts indirectly through other immune mediators. The beneficial effects of CNTF gene therapy remained unchanged after deleting CNTF receptor alpha (CNTFRα) in retinal ganglion cells (RGCs), the projection neurons of the retina, but were diminished by depleting neutrophils or by genetically suppressing monocyte infiltration. CNTF gene therapy increased expression of C-C motif chemokine ligand 5 (CCL5) in immune cells and retinal glia, and recombinant CCL5 induced extensive axon regeneration. Conversely, CRISPR-mediated knockdown of the cognate receptor (CCR5) in RGCs or treating wild-type mice with a CCR5 antagonist repressed the effects of CNTF gene therapy. Thus, CCL5 is a previously unrecognized, potent activator of optic nerve regeneration and mediates many of the effects of CNTF gene therapy.

Indexed as

Nerve RegenerationAnimalsChemokine CCL5Ciliary Neurotrophic FactorCiliary Neurotrophic Factor Receptor alpha SubunitCRISPR-Cas SystemsGene EditingGenetic TherapyGenetic VectorsOptic NerveOptic Nerve InjuriesRetinal Ganglion CellsChemokine CCL5Ciliary Neurotrophic FactorCiliary Neurotrophic Factor Receptor alpha Subunitciliary neurotrophic factorneuroinflammationregenerationretinal ganglion cells

Identifiers

PMID33627402
PMCPMC7936361
OpenAlexW3129435897

What OpenQuestion holds

Textmetadata
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.