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miRNA expression profiles and molecular networks in resting and LPS-activated BV-2 microglia-Effect of cannabinoids

Mammalian microRNAs (miRNAs) play a critical role in modulating the response of immune cells to stimuli. Cannabinoids are known to exert beneficial actions such as neuroprotection and immunosuppressive activities. However, the underlying mechanisms which contribute to these effects are not fully understood. We previously reported that the psychoactive cannabinoid Δ9-tetrahydrocannabinol (THC) and the non-psychoactive cannabidiol (CBD) differ in their anti-inflammatory signaling pathways. Using…

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Mammalian microRNAs (miRNAs) play a critical role in modulating the response of immune cells to stimuli. Cannabinoids are known to exert beneficial actions such as neuroprotection and immunosuppressive activities. However, the underlying mechanisms which contribute to these effects are not fully understood. We previously reported that the psychoactive cannabinoid Δ9-tetrahydrocannabinol (THC) and the non-psychoactive cannabidiol (CBD) differ in their anti-inflammatory signaling pathways. Using lipopolysaccharide (LPS) to stimulate BV-2 microglial cells, we examined the role of cannabinoids on the expression of miRNAs. Expression was analyzed by performing deep sequencing, followed by Ingenuity Pathway Analysis to describe networks and intracellular pathways. miRNA sequencing analysis revealed that 31 miRNAs were differentially modulated by LPS and by cannabinoids treatments. In addition, we found that at the concentration tested, CBD has a greater effect than THC on the expression of most of the studied miRNAs. The results clearly link the effects of both LPS and cannabinoids to inflammatory signaling pathways. LPS upregulated the expression of pro-inflammatory miRNAs associated to Toll-like receptor (TLR) and NF-κB signaling, including miR-21, miR-146a and miR-155, whereas CBD inhibited LPS-stimulated expression of miR-146a and miR-155. In addition, CBD upregulated miR-34a, known to be involved in several pathways including Rb/E2f cell cycle and Notch-Dll1 signaling. Our results show that both CBD and THC reduced the LPS-upregulated Notch ligand Dll1 expression. MiR-155 and miR-34a are considered to be redox sensitive miRNAs, which regulate Nrf2-driven gene expression. Accordingly, we found that Nrf2-mediated expression of redox-dependent genes defines a Mox-like phenotype in CBD treated BV-2 cells. In summary, we have identified a specific repertoire of miRNAs that are regulated by cannabinoids, in resting (surveillant) and in LPS-activated microglia. The modulated miRNAs and their target genes are controlled by TLR, Nrf2 and Notch cross-talk signaling and are involved in immune response, cell cycle regulation as well as cellular stress and redox homeostasis.

Source: https://pubmed.ncbi.nlm.nih.gov/30742662/?utm_source=no_user_agent&utm_medium=rss&utm_campaign=pubmed-2&utm_content=1TQbL92JdzYTve0m3OsSoggMby2JyZDVBLRHiDMYZkT1hs6YNQ&fc=20200804223051&ff=20200816094834&v=2.11.5

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Growth of Cannabidiol Oil (CBD Oil) Market Size Report Till 2025

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The Global Cannabidiol Oil (CBD Oil) Market covers explicit information regarding the development rate, market estimates, drivers, limitations, future … Source:

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Hemp Seed Market Explosive Factors of Revenue by Major Manufacturers |Hempco Inc, Ecofibre …

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Hemp Seed Market research report is the high quality report having in-depth market research studies. This market report provides best solutions for … Source:

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CBD Oil Market 2021 Global Industry Size, Reviews, Segments, Revenue, and Forecast to 2027

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Fort Collins, Colorado: The most recently published CBD Oil Market report provides a critical assessment of key growth dynamics, emerging pathways, … Source:

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