Publications by authors named "H Harashima"

Background: Inflammation is one of the hallmarks of cancer and is associated with tumor growth. Tumor endothelial cells (TECs) demonstrate inflamed phenotypes. Endothelial inflammation initiates thrombus formation, which is the second cause of cancer-related deaths.

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Energy metabolism is crucial for cell polarity and pathogenesis. Mitochondria, which are essential for maintaining energy homeostasis within cells, can be targeted by drug delivery to regulate energy metabolism. However, there is a lack of research comparing how mitochondria control energy metabolism in different cell types derived from the neural crest.

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The delivery of the CRISPR/Cas ribonucleoprotein (RNP) has received attention for clinical applications owing to its high efficiency with few off-target effects. Lipid nanoparticles (LNPs) are potential non-viral vectors for the delivery of RNPs. Herein, we report the engineering of a branched scaffold structure of ionizable lipids for the hepatic delivery of RNPs.

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Article Synopsis
  • Delivery of mRNA to organs beyond the liver is important for new therapies, and functionalized lipid nanoparticles (LNPs) can help, but they come with complexity and higher costs.
  • This study shows that the expression of mRNA can shift from the liver to the spleen depending on the length of the lipid tail, even when using different lipid head structures.
  • The researchers found that LNPs with short lipid tails have a unique property that reduces their clearance from the liver, allowing for better targeting of the spleen and effective immune responses when delivering SARS-CoV-2 mRNA.
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Therapeutically manipulating the stimulator of interferon genes (STING) pathway has promising potential for enhancing antitumor immunity. Agonists of this pathway (STING agonists) are being evaluated in clinical trials. Loading the STING agonists into lipid nanoparticles (LNPs) increases their safety and efficacy.

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