Cited by 118Cannabis and Cannabinoid ResearchAlzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration Mechanisms

Cannabinoid effects on β amyloid fibril and aggregate formation, neuronal and microglial-activated neurotoxicity in vitro

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Janefjord, Emelie, Mååg, Jesper L. V., Harvey, Benjamin S., Smid, Scott D.·2014·Cellular and Molecular Neurobiology

Abstract

Cannabinoid (CB) ligands have demonstrated neuroprotective properties. In this study we compared the effects of a diverse set of CB ligands against β amyloid-mediated neuronal toxicity and activated microglial-conditioned media-based neurotoxicity in vitro, and compared this with a capacity to directly alter β amyloid (Aβ) fibril or aggregate formation. Neuroblastoma (SH-SY5Y) cells were exposed to Aβ1-42 directly or microglial (BV-2 cells) conditioned media activated with lipopolysaccharide (LPS) in the presence of the CB1 receptor-selective agonist ACEA, CB2 receptor-selective agonist JWH-015, phytocannabinoids Δ(9)-THC and cannabidiol (CBD), the endocannabinoids 2-arachidonoyl glycerol (2-AG) and anandamide or putative GPR18/GPR55 ligands O-1602 and abnormal-cannabidiol (Abn-CBD). TNF-α and nitrite production was measured in BV-2 cells to compare activation via LPS or albumin with Aβ1-42. Aβ1-42 evoked a concentration-dependent loss of cell viability in SH-SY5Y cells but negligible TNF-α and nitrite production in BV-2 cells compared to albumin or LPS. Both albumin and LPS-activated BV-2 conditioned media significantly reduced neuronal cell viability but were directly innocuous to SH-SY5Y cells. Of those CB ligands tested, only 2-AG and CBD were directly protective against Aβ-evoked SH-SY5Y cell viability, whereas JWH-015, THC, CBD, Abn-CBD and O-1602 all protected SH-SY5Y cells from BV-2 conditioned media activated via LPS. While CB ligands variably altered the morphology of Aβ fibrils and aggregates, there was no clear correlation between effects on Aβ morphology and neuroprotective actions. These findings indicate a neuroprotective action of CB ligands via actions at microglial and neuronal cells.

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Authors
Janefjord, E., Mååg, J. L. V., Harvey, B. S., & Smid, S. D.
Affiliations
  • University of Gothenburg (SE)
  • Uppsala University (SE)
  • The University of Adelaide (AU)
Corresponding author
Smid, Scott D.
Venue
Cellular and Molecular Neurobiology
Published
2013-09-13
Volume
34
Issue
1
Pages
31-42
ISSN
  • 0272-4340 (ISSN-L)
  • 1573-6830
OpenAlex
W2056110100
Cited by
118
References
47
Citations by year
2026: 7 · 2025: 4 · 2024: 12 · 2023: 8 · 2022: 18 · 2021: 12 · 2020: 16 · 2019: 9 · 2018: 9 · 2017: 7 · 2016: 7 · 2015: 7 · 2014: 2
FWCI
3.92
Type
journal article
Language
en
Open access
Locations
  • Cellular and Molecular Neurobiology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
Topics
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
cannabinoids, amyloid-beta, amyloid fibril formation, neurotoxicity, microglia, neuroinflammation, neuroprotection, CB1 receptor, CB2 receptor, cannabidiol, 2-arachidonoylglycerol, anandamide, lipopolysaccharide, TNF-α, nitrite production, SH-SY5Y cells, BV-2 cells, Alzheimer's disease
MeSH terms
Albumins, Animals, Cannabinoids, Cell Survival, Humans, Ligands, Lipopolysaccharides, Neurons, Amyloid beta-Peptides, Culture Media, Conditioned, Microglia, Neuroprotective Agents, Protein Structure, Quaternary, Cell Line, Tumor, Mice

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