Evidence map›Paper›PMID 35347144›Full record

ArticleNPJ Parkinson's disease2022

Effect of LRRK2 protein and activity on stimulated cytokines in human monocytes and macrophages.

Diba Ahmadi Rastegar, Laura P Hughes, Gayathri Perera, Shikara Keshiya, Siying Zhong, Jianqun Gao, Glenda M Halliday, Birgitt Schüle, Nicolas Dzamko

Open access · goldAbstract read
In one paragraph

Article in NPJ Parkinson's disease, 2022. 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
4.7field-weighted citation impact, top 4% 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, 40 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Article
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  8. Article
  9. Parkinson's-Linked LRRK2 and GBA1 Mutations Modulate the Peripheral Immune Response to Pseudomonas aeruginosa.Movement disorders : official journal of the Movement Disorder Society · 2026
    Article
  10. LRRK2NPJ Parkinson's disease · 2026
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Exploring LRRK2-dependent Mechanisms in Parkinson's Disease Therapy.CNS & neurological disorders drug targets · 2025
    Review
  18. Review
  19. Article
  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

9 authors at 2 institutions in 2 countries.

Diba Ahmadi Rastegar *University of Sydney, Brain and Mind Centre and Faculty of Medicine and Health, School of Medical Sciences, Camperdown, NSW, 2050, Australia.
Laura P Hughes *University of Sydney, Brain and Mind Centre and Faculty of Medicine and Health, School of Medical Sciences, Camperdown, NSW, 2050, Australia.
Gayathri PereraUniversity of Sydney, Brain and Mind Centre and Faculty of Medicine and Health, School of Medical Sciences, Camperdown, NSW, 2050, Australia.
Shikara KeshiyaUniversity of Sydney, Brain and Mind Centre and Faculty of Medicine and Health, School of Medical Sciences, Camperdown, NSW, 2050, Australia.
Siying ZhongUniversity of Sydney, Brain and Mind Centre and Faculty of Medicine and Health, School of Medical Sciences, Camperdown, NSW, 2050, Australia.
Jianqun GaoUniversity of Sydney, Brain and Mind Centre and Faculty of Medicine and Health, School of Medical Sciences, Camperdown, NSW, 2050, Australia.ORCID http://orcid.org/0000-0003-3695-4386
Glenda M HallidayUniversity of Sydney, Brain and Mind Centre and Faculty of Medicine and Health, School of Medical Sciences, Camperdown, NSW, 2050, Australia.ORCID http://orcid.org/0000-0003-0422-8398
Birgitt SchüleDepartment of Pathology, Stanford School of Medicine, Stanford, CA, 94305, USA.ORCID http://orcid.org/0000-0002-9952-5776
Nicolas DzamkoUniversity of Sydney, Brain and Mind Centre and Faculty of Medicine and Health, School of Medical Sciences, Camperdown, NSW, 2050, Australia. nicolas.dzamko@sydney.edu.au.ORCID http://orcid.org/0000-0002-9121-0294
The University of Sydney · AUStanford Medicine · US

Funding

Department of Health | National Health and Medical Research Council (NHMRC) #1037746, #1095127 and #1132524Michael J. Fox Foundation for Parkinson's Research (Michael J. Fox Foundation) 14243
6 · The paper itself

Abstract

Leucine-rich-repeat kinase 2 (LRRK2), a potential therapeutic target for the treatment of Parkinson's disease (PD), is highly expressed in monocytes and macrophages and may play a role in the regulation of inflammatory pathways. To determine how LRRK2 protein levels and/or its activity modulate inflammatory cytokine/chemokine levels in human immune cells, isogenic human induced pluripotent stem cells (iPSC) with the LRRK2-activating G2019S mutation, wild-type LRRK2, and iPSC deficient in LRRK2 were differentiated to monocytes and macrophages and stimulated with inflammatory toll-like receptor (TLR) agonists in the presence and absence of LRRK2 kinase inhibitors. The effect of LRRK2 inhibitors and the effect of increasing LRRK2 levels with interferon gamma on TLR-stimulated cytokines were also assessed in primary peripheral blood-derived monocytes. Monocytes and macrophages with the LRRK2 G2019S mutation had significantly higher levels of cytokines and chemokines in tissue culture media following stimulation with TLR agonists compared to isogenic controls. Knockout of LRRK2 impaired phagocytosis but did not significantly affect TLR-mediated cytokine levels. Interferon gamma significantly increased the levels of LRRK2 and phosphorylation of its downstream Rab10 substrate, and potentiated TLR-mediated cytokine levels. LRRK2 kinase inhibitors did not have a major effect on TLR-stimulated cytokine levels. Results suggest that the LRRK2 G2019S mutation may potentiate inflammation following activation of TLRs. However, this was not dependent on LRRK2 kinase activity. Indeed, LRRK2 kinase inhibitors had little effect on TLR-mediated inflammation under the conditions employed in this study.

Identifiers

PMID35347144
PMCPMC8960803
OpenAlexW4220695835

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.