Publications by authors named "Yuka Yoshimura"

Background: Despite well-documented effects on human health, the action modes of environmental pollutants are incompletely understood. Although transcriptome-based approaches are widely used to predict associations between chemicals and disorders, the molecular cues regulating pollutant-derived gene expression changes remain unclear. Therefore, we developed a data-mining approach, termed "DAR-ChIPEA," to identify transcription factors (TFs) playing pivotal roles in the action modes of pollutants.

View Article and Find Full Text PDF

Many therapeutic antibodies (Abs) and mRNA vaccines, both targeting SARS-CoV-2 spike protein (S-protein), have been developed and approved in order to combat the ongoing COVID-19 pandemic. In consideration of these developments, a common concern has been the potential for Ab-dependent enhancement (ADE) of infection caused by inoculated or induced Abs. Although the preventive and therapeutic effects of these Abs are obvious, little attention has been paid to the influence of the remaining and dwindling anti-S-protein Abs in vivo.

View Article and Find Full Text PDF

Since the emergence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), many vaccine trials have been initiated. An important goal of vaccination is the development of neutralizing antibody (Ab) against SARS-CoV-2. However, the possible induction of antibody-dependent enhancement (ADE) of infection, which is known for other coronaviruses and dengue virus infections, is a particular concern in vaccine development.

View Article and Find Full Text PDF

Motivation: Biological sequence classification is the most fundamental task in bioinformatics analysis. For example, in metagenome analysis, binning is a typical type of DNA sequence classification. In order to classify sequences, it is necessary to define sequence features.

View Article and Find Full Text PDF
Article Synopsis
  • Adult T-cell leukemia/lymphoma (ATL) is a serious cancer linked to the human T-cell lymphotropic virus type I, and previous research identified several plant extracts that may inhibit ATL cell growth.
  • Researchers tested additional withanolides from solanaceous plants to investigate their effects on ATL cells, finding that certain chemical groups, specifically a 4β-hydroxy and a 5β,6β-epoxy group, were crucial for effectiveness, while sugar components at specific positions decreased activity.
  • Among the tested compounds, 24,25-dihydrowithanolide D was highlighted as the most effective, promoting cell death specifically in ATL cell lines through apoptosis.
View Article and Find Full Text PDF

The right half of the colon was resected in a 70-year-old woman in August 2002 for ascending colon cancer. The peritoneum was also resected because of metastasis (Stage IV). Since tumor markers gradually increased, positron emission tomography (PET)/ computed tomography (CT) revealed peritoneal dissemination.

View Article and Find Full Text PDF