Cited by 256Amyotrophic Lateral Sclerosis ResearchAlzheimer's disease research and treatmentsPrion Diseases and Protein Misfolding

Patient-derived frontotemporal lobar degeneration brain extracts induce formation and spreading of TDP-43 pathology in vivo

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Porta, Sílvia, Xu, Yan, Restrepo, Clark R., Kwong, Linda K., Zhang, Bin, Brown, Hannah J., Lee, Edward B., Trojanowski, John Q. +1 more·2018·Nature Communications

Abstract

Abstract The stereotypical distribution of TAR DNA-binding 43 protein (TDP-43) aggregates in frontotemporal lobar degeneration (FTLD-TDP) suggests that pathological TDP-43 spreads throughout the brain via cell-to-cell transmission and correlates with disease progression, but no in vivo experimental data support this hypothesis. We first develop a doxycycline-inducible cell line expressing GFP-tagged cytoplasmic TDP-43 protein (iGFP-NLSm) as a cell-based system to screen and identify seeding activity of human brain-derived pathological TDP-43 isolated from sporadic FTLD-TDP and familial cases with Granulin (FTLD-TDP-GRN) or C9orf72 repeat expansion mutations (FTLD-TDP-C9+). We demonstrate that intracerebral injections of biologically active pathogenic FTLD-TDP seeds into transgenic mice expressing cytoplasmic human TDP-43 (lines CamKIIa-hTDP-43 NLSm , rNLS8, and CamKIIa-208) and non-transgenic mice led to the induction of de-novo TDP-43 pathology. Moreover, TDP-43 pathology progressively spreads throughout the brain in a time-dependent manner via the neuroanatomic connectome. Our study suggests that the progression of FTLD-TDP reflects the templated cell-to-cell transneuronal spread of pathological TDP-43.

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Crossref · 10.1038/s41467-018-06548-9

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  • Accumulation of pathological protein is detected in some pyramidal neurons in cortical regions contralateral to the site of injection.

    “The accumulation of pathological protein is detected in some pyramidal neurons in cortical regions that are contralateral to the site of injection.”

    From The Role of Retrotransposons and Endogenous Retroviruses in Age-Dependent Neurodegenerative Disorders (2024) · cites this paper as Porta et al. 2018

    The Results section, “FTLD-TDP brain extracts seed cytoplasmic TDP-43 in vivo” (page unavailable), reports pTDP-43 inclusions in scattered cortical neurons contralateral to the injection site. It identifies pyramidal neurons with aggregates in hippocampal CA1, but does not identify the affected contralateral cortical neurons as pyramidal. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Neuron-to-neuron transfer of pathological TDP-43 has been observed in vivo in response to injection of aggregated human TDP-43 into the cortex of mice that express pan-neuronal human TDP-43 that is already mislocalized to the cytoplasm.

    “Neuron-to-neuron transfer has also been observed in vivo in response to injection of aggregated human TDP-43 into the cortex of mice that express pan-neuronal human TDP-43 that is already mislocalized to the cytoplasm (Porta et al. 2018).”

    From The Role of Retrotransposons and Endogenous Retroviruses in Age-Dependent Neurodegenerative Disorders (2024) · cites this paper as Porta et al. 2018

    The Results section ('FTLD-TDP brain extracts seed cytoplasmic TDP-43 in vivo'; page not provided) reports that patient-derived extracts containing pathological TDP-43 were injected into mice expressing cytoplasmic human TDP-43, with the neocortex among the injection sites. The Discussion describes the subsequent spread as consistent with transneuronal transmission, rather than direct observation of neuron-to-neuron transfer. The mice expressed the transgene in forebrain neurons, not pan-neuronally, and injections also targeted the hippocampus and thalamus. (LLM, conf=0.88)

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  1. [69]Paxinos, G. & Franklin, K. B. J. The Mouse Brain in Stereotaxic Coordinates 2nd edn (Academic Press, San Diego, CA, 2001).

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Authors
Porta, S., Xu, Y., Restrepo, C. R., Kwong, L. K., Zhang, B., Brown, H. J., Lee, E. B., Trojanowski, J. Q., & Lee, V. M.-Y.
Affiliations
University of Pennsylvania (US)
Corresponding author
Lee, Virginia M.-Y.
Venue
Nature Communications
Published
2018-10-11
Volume
9
Issue
1
Pages
4220-4220
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2894965458
Cited by
248
References
72
Citations by year
2026: 19 · 2025: 21 · 2024: 37 · 2023: 40 · 2022: 31 · 2021: 39 · 2020: 29 · 2019: 24 · 2018: 7
FWCI
16.81
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • U.S. Department of Health & Human Services | NIH | National Institute on Aging (AG10124, AG17586)
  • Wyncote Foundation Biogen
Topics
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Prion Diseases and Protein Misfolding
Keywords
frontotemporal lobar degeneration, TDP-43, FTLD-TDP, cell-to-cell transmission, transneuronal spread, seeding activity, prion-like propagation, granulin, C9orf72 repeat expansion, transgenic mouse model, disease progression
MeSH terms
Animals, Brain, Cytoplasm, DNA-Binding Proteins, Hippocampus, Humans, Neurons, Tissue Extracts, Mice, Frontotemporal Lobar Degeneration

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