Publications by authors named "B K Sahay"

Article Synopsis
  • Cancer immunotherapy faces challenges due to poor antigen recognition and an unfriendly tumor microenvironment (TME).
  • Researchers developed "onion-like" multi-lamellar RNA lipid particle aggregates (LPAs) that enhance the delivery and effectiveness of tumor mRNA antigens by activating specific immune responses in the body.
  • In studies with dogs and humans, RNA-LPAs showed promising results, improving survival rates and triggering strong immune reactions against tumors, suggesting they could be a breakthrough method for cancer treatment.
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The receptor binding domain (RBD) of SARS-CoV-2 (SCoV2) has been used recently to identify the RBD sequences of feline coronavirus serotypes 1 (FCoV1) and 2 (FCoV2). Cats naturally infected with FCoV1 have been shown to possess serum reactivities with FCoV1 and SCoV2 RBDs but not with FCoV2 RBD. In the current study, COVID-19-vaccinated humans and FCoV1-infected laboratory cats were evaluated for interferon-gamma (IFNγ) and interleukin-2 (IL-2 ELISpot responses by their peripheral blood mononuclear cells (PBMC) to SCoV2, FCoV1, and FCoV2 RBDs.

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The current study was initiated when our specific-pathogen-free laboratory toms developed unexpectedly high levels of cross-reactive antibodies to human SARS-CoV-2 (SCoV2) receptor binding domain (RBD) upon mating with feline coronavirus (FCoV)-positive queens. Multi-sequence alignment analyses of SCoV2 Wuhan RBD and four strains each from FCoV serotypes 1 and 2 (FCoV1 and FCoV2) demonstrated an amino acid sequence identity of 11.5% and a similarity of 31.

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Messenger RNA (mRNA) has emerged as a remarkable tool for COVID-19 prevention but its use for induction of therapeutic cancer immunotherapy remains limited by poor antigenicity and a regulatory tumor microenvironment (TME). Herein, we develop a facile approach for substantially enhancing immunogenicity of tumor-derived mRNA in lipid-particle (LP) delivery systems. By using mRNA as a molecular bridge with ultrapure liposomes and foregoing helper lipids, we promote the formation of 'onion-like' multi-lamellar RNA-LP aggregates (LPA).

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Blockchain technology is touted as a game-changer. Many experts consider blockchain technology as one of the disruptive innovations. Following significant success in the banking and finance sector, blockchain technology has found significant success in all fields, including health, manufacturing, transportation, disaster relief operations, and many others.

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