7,486 results match your criteria: "Korea Research Institute of Bioscience[Affiliation]"

Complement C5a Receptor Signaling in Macrophages Enhances Trained Immunity Through mTOR Pathway Activation.

Immune Netw

August 2024

Innovative Research and Education Center for Integrated Bioactive Materials and the Department of Bioactive Material Sciences, Jeonbuk National University, Jeonju 54896, Korea.

Complement C5a receptor (C5aR) signaling in immune cells has various functions, inducing inflammatory or anti-inflammatory responses based on the type of ligand present. The Co1 peptide (SFHQLPARSRPLP) has been reported to activate C5aR signaling in dendritic cells. We investigated the effect of C5aR signaling via the Co1 peptide on macrophages.

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  • Hemp Cheungsam, a non-drug Cannabis sativa strain, has low levels of the psychoactive compound THCA and its cannabinoid biosynthesis genes were not previously studied.
  • RNA-sequencing was used to analyze flower, leaf, and stem tissues of hemp Cheungsam, revealing that cannabinoid biosynthesis mainly occurs in the flowers, with a strong emphasis on CBDA production over THCA.
  • The study confirms that flowers are the primary site for cannabinoid production, with high expression of CBDA synthase and suggests that key genes involved in cannabinoid biosynthesis have identifiable orthologs in hemp Cheungsam.
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Uncovering gene expression signatures and diagnostic - Biomarkers in hepatocellular carcinoma through multinomial logistic regression analysis.

J Biotechnol

November 2024

Department of Digital Bio Technology Innovation, Korea Research Institute of Bioscience & Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea; Department of Bioinformatics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea. Electronic address:

Hepatocellular carcinoma (HCC) is one of the leading causes of cancer death worldwide, and classifying the developmental stages of HCC can help with early prognosis and treatment. This study aimed to investigate diagnostic and prognostic molecular signatures underlying the progression of HCC, including tumor initiation and growth, and to classify its developmental stages based on gene expression levels. We integrated data from two cancer systems, including 78 patients with Edmondson-Steiner (ES) grade and 417 patients with TNM stage cancer.

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  • The COVID-19 pandemic has highlighted the need for effective therapeutic interventions alongside vaccines, especially given the rapid mutation of the SARS-CoV-2 virus.
  • This study investigates the antiviral properties and safety of 6'-Hydroxy justicidin B (6'-HJB), a compound from traditional Chinese medicine, as a potential treatment for COVID-19.
  • Results show that 6'-HJB effectively inhibits SARS-CoV-2 growth with lower toxicity than remdesivir and has a favorable safety profile in both cell lines and ferrets, indicating it may be a promising therapeutic option.
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Synthetic Biology-Driven Microbial Therapeutics for Disease Treatment.

J Microbiol Biotechnol

October 2024

Synthetic Biology Research Center and the K-Biofoundry, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea.

The human microbiome, consisting of microorganisms that coexist symbiotically with the body, impacts health from birth. Alterations in gut microbiota driven by factors such as diet and medication can contribute to diseases beyond the gut. Synthetic biology has paved the way for engineered microbial therapeutics, presenting promising treatments for a variety of conditions.

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With the development of industry and modern manufacturing, nondegradable low-density polyethylene (LDPE) has been widely used, posing a rising environmental hazard to natural ecosystems and public health. In this study, we isolated a series of LDPE-degrading fungi from landfill sites and carried out LDPE degradation experiments by combining highly efficient degrading fungi in pairs. The results showed that the mixed microorganisms composed of Alternaria sp.

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  • * Researchers produced FopA antigen using a baculovirus system and generated specific antibodies by immunizing mice, then screened these using hybridoma and phage display technologies.
  • * Two monoclonal antibodies (6B12 and 3C1) were successfully developed, leading to a sensitive sandwich ELISA for tularemia diagnosis with low detection limits, providing a more effective alternative to traditional tests.
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Long-term acclimation to organic carbon enhances the production of loliolide from Scenedesmus deserticola.

Bioresour Technol

November 2024

Cell Factory Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science & Technology (UST), Daejeon 34113, Republic of Korea; ASK LABS, KRIBB BVC Center 109, Daejeon 34141, Republic of Korea. Electronic address:

Article Synopsis
  • The study focuses on enhancing the productivity of Scenedesmus deserticola for commercial production of loliolide through long-term acclimation using glucose as an organic carbon source.
  • After a year of acclimation, a specific strain (S. deserticola HS4) showed at least a 2-fold increase in loliolide production and underwent further testing in larger cultivation setups.
  • The findings indicate that long-term acclimation can significantly improve the productivity and adaptability of microalgae, making them more viable for industrial applications.
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The coronavirus disease 2019 (COVID-19) emerged as a major global health crisis, posing significant health, economic, and social challenges. Vaccine development has been a crucial response to the severe-acute-respiratory-syndrome-related coronavirus-2 pandemic owing to the critical role of immunization in controlling infectious diseases, leading to the expedited development of several effective vaccines. Although mRNA platform-based COVID-19 vaccines authorized under emergency-use authorization have been administered globally, concerns regarding the vaccines have increased owing to the occurrence of various side effects.

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In this study, we investigated the effects of gamma irradiation on the antioxidant activity and metabolite profiles of calli (PC3012). Gamma irradiation at various doses (0, 0.05, 0.

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The purpose of this study was to investigate the protective effects of 7S,15R-dihydroxy-16S,17S-epoxy-docosapentaenoic acid (diHEP-DPA) in retinal pigment epithelial (RPE) cell damage. ARPE-19 cells, a human RPE cell line, were cultured with diHEP-DPA and Bis-retinoid N-retinyl-N-retinylidene ethanolamine (A2E), followed by exposure to BL. Cell viability and cell death rates were determined.

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Polyethylene terephthalate (PET), one of the most widely used plastics in the world, causes serious environmental problems. Recently, scientists have been focused on the enzymatic degradation of PET, an environmentally friendly method that offers an attractive approach to the degradation and recycling of PET. In this work, PET hydrolase from sp.

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Total-body irradiation (TBI) with gamma rays can damage organisms in various unexpected ways and trigger several organ dysfunction syndromes, such as acute radiation syndrome (ARS). Hematopoietic cells and enterocytes are particularly sensitive to radiation due to their self-renewal ability and rapid division, which leads to hematopoietic ARS (H-ARS) and gastrointestinal ARS (GI-ARS). We previously showed that a lipid-based small molecule, 1-palmitoyl-2-linoleoyl-3-acetyl-rac-glycerol (PLAG), improved 30-day survival and alleviated H-ARS symptoms in BALB/c mice after a lethal dose (LD70/30) of gamma-ray TBI.

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Coronavirus nucleocapsid-based vaccine provides partial protection against hetero-species coronavirus in murine models.

Antiviral Res

November 2024

Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea; Chungbuk National University College of Medicine, Cheongju, South Korea; Biomedical Research Institute, Chungbuk National University Hospital, Cheongju, South Korea. Electronic address:

Most coronavirus vaccines focus on the spike (S) antigen, but the frequent mutations in S raise concerns about the vaccine efficacy against new variants. Although additional antigens with conserved sequences are have been tested, the extent to which these vaccines can provide immunity against different coronavirus species remains unclear. In this study, we assessed the potential of nucleocapsid (N) as a coronavirus vaccine antigen.

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Permissive lung neutrophils facilitate tuberculosis immunopathogenesis in male phagocyte NADPH oxidase-deficient mice.

PLoS Pathog

August 2024

Department of Microbiology, Institute for Immunology and Immunological Disease, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, South Korea.

NADPH oxidase 2 (NOX2) is an enzyme responsible for generating reactive oxygen species, primarily found in phagocytes. Chronic Granulomatous Disease (CGD), along with bacterial infections such as Mycobacterium tuberculosis (Mtb), is a representative NOX2-deficient X-linked disease characterized by uncontrolled inflammation. However, the precise roles of host-derived factors that induce infection-mediated hyperinflammation in NOX2-deficient condition remain incompletely understood.

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Article Synopsis
  • PSEN1 is a gene associated with early onset Alzheimer's, and its inactivation in mice leads to developmental issues like vertebral malformations, but its function in other species is less understood.
  • The study aimed to investigate the role of PSEN1 in vertebral development and neurodegeneration using genetically modified pigs created with CRISPR/Cas9 targeting exon 9 of the PSEN1 gene.
  • Results showed that pigs with a complete PSEN1 mutation died shortly after birth and had severe skeletal defects, while those with at least one functioning allele developed normally, indicating PSEN1’s importance in development and providing a new model for Alzheimer’s research.
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The first report of Bathynellacea in the subterranean water of Mongolia: A new species of Camacho, 2020 (Crustacea, Bathynellidae).

Biodivers Data J

August 2024

Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Republic of Korea Department of Biological Sciences and Bioengineering, Inha University Incheon 22212 Republic of Korea.

Background: We report the first finding of Bathynellacea, discovered in Mongolia. We also report a new species of the genus Camacho, 2020, which was previously recorded only in the western edge of Russia.

New Information: sp.

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Background: Gastric cancer (GC) is a type of cancer with high incidence and mortality rates. Although various chemical interventions are being developed to treat gastric cancer, there is a constant demand for research into new GC treatment targets and modes of action (MOAs) because of the low effectiveness and side effects of current treatments.

Methods: Using the TCGA data portal, we identified EHMT2 overexpression in GC samples.

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, a notorious phytopathogen, is responsible for causing bacterial wilt, leading to significant economic losses globally in many crops within the Solanaceae family. Despite various cultural and chemical control strategies, managing bacterial wilt remains a substantial challenge. This study demonstrates, for the first time, the effective use of plant-induced bacterial gene silencing against , facilitated by -mediated gene silencing, to control bacterial wilt symptoms in .

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Peroxiredoxin 1 modulates oxidative stress resistance and cell apoptosis through stemness in liver cancer under non-thermal plasma treatment.

Biochem Biophys Res Commun

December 2024

Stem Cell and Regenerative Biology Laboratory, College of Life Science & Biotechnology, Heilongjiang Bayi Agricultural University, Heilongjiang, Daqing, 163319, China. Electronic address:

The role of peroxiredoxin 1 (PRDX1), a crucial enzyme that reduces reactive oxygen and nitrogen species levels in HepG2 human hepatocellular carcinoma (HCC) cells, in the regulation of HCC cell stemness under oxidative stress and the underlying mechanisms remain largely unexplored. Here, we investigated the therapeutic potential of non-thermal plasma in targeting cancer stem cells (CSCs) in HCC, focusing on the mechanisms of resistance to oxidative stress and the role of PRDX1. By simulating oxidative stress conditions using the plasma-activated medium, we found that a reduction in PRDX1 levels resulted in a considerable increase in HepG2 cell apoptosis, suggesting that PRDX1 plays a key role in oxidative stress defense mechanisms in CSCs.

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A Gram-stain-negative, strictly aerobic, non-motile, rod-shaped, designated strain CAU 1642, was isolated from a Salicornia herbacea collected from a tidal flat in the Yellow Sea. Strain CAU 1642 grew optimally at pH 8.0 and 30 °C.

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The family Convolvulaceae comprises approximately 50-60 genera with approximately 1600-1700 species, exhibiting a rich diversity of morphological characteristics and occupying a broad range of ecological habitats. High-throughput sequencing identified a tentative new virus in the family Geminiviridae infecting Calystegia sepium var. japonica in South Korea.

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Mammalian embryo development is initiated by the union of paternal and maternal gametes. Upon fertilization, their epigenome landscape is transformed through a series of finely orchestrated mechanisms that are crucial for survival and successful embryogenesis. Specifically, maternal or oocyte-specific reprogramming factors modulate germ cell specific epigenetic marks into their embryonic states.

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Excessive neutrophil infiltration into the tumor microenvironment (TME) is an important factor that contributes to tumor overgrowth and limited immunotherapy efficacy. Neutrophils activate various receptors involved in tumor progression, while suppressing the infiltration and activity of cytotoxic T cells and creating optimal conditions for tumor growth. Therefore, the appropriate control of neutrophil infiltration is an effective strategy for tumor treatment.

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Palmitic acid-mediated modulation of crystallization dynamics in amylose microparticle formation: From spherical to macaron and disc shapes.

Food Chem

December 2024

Institute of Life Sciences and Resources & Department of Food Science and Biotechnology, Kyung Hee University, Yongin, 17104, Republic of Korea. Electronic address:

Here, we investigated the complexation of short chain amylose (SCAs) and palmitic acid (PA), serving as polymeric building blocks that alter the selectivity and directionality of particle growth. This alteration affects the shape anisotropy of the particles, broadening their applications due to the increased surface area. By modifying the concentration of PA, we were able to make spherical, macaron, and disc-shaped particles, demonstrating that PA acts as a structure-directing agent.

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