Research Archives - Page 36 of 60 - Yokohama City University

2021-11-27

Persistence of robust humoral immune response in COVID-19 convalescent individuals over twelve months after infection

Background: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection elicits varying degrees of protective immunity conferred by neutralizing antibodies (nAbs). In this study, we report the persistence of nAb responses over 12 months after infection despite their decreasing trend noticed from 6 months.

2021-11-24

Antibody titers against the Alpha, Beta, Gamma, and Delta variants of SARS-CoV-2 induced by BNT162b2 vaccination measured using automated chemiluminescent enzyme immunoass

Background Levels of 50% neutralizing titer (NT50) reflect the a vaccine-induced humoral immunity after the vaccination against the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Measurements of NT50 are difficult to implement in large quantities. A high-throughput laboratory test is expected for determining the level of herd immunity against SARS-CoV-2.

2021-11-22

International Harmonization of Provisional Diagnostic Criteria for ERBB2-Amplified Metastatic Colorectal Cancer Allowing for Screening by Next-Generation Sequencing Panel

ERBB2 amplification (human epidermal growth factor receptor 2 positivity [HER2+]) in metastatic colorectal cancer (mCRC) has important therapeutic implications that necessitate the need for accurate diagnostics. The study purpose was to establish and validate harmonized diagnostic criteria for HER2+ mCRC among 3 groups (GI-SCREEN-Japan, NCTN-SWOG-USA, and Korea).

2021-11-22

Structure-based screening combined with computational and biochemical analyses identified the inhibitor targeting the binding of DNA Ligase 1 to UHRF1

The accumulation of epigenetic alterations is one of the major causes of tumorigenesis. Aberrant DNA methylation patterns cause genome instability and silencing of tumor suppressor genes in various types of tumors. Therefore, drugs that target DNA methylation-regulating factors have great potential for cancer therapy.