753 results match your criteria: "BioResource Research Center[Affiliation]"

A neutrophilic iron-oxidizing bacterium, strain MIZ01, which was previously isolated from a wetland in Ibaraki, Japan, was taxonomically characterized in detail. Strain MIZ01 was a motile, curved-rod shaped, Gram-stain-negative bacterium. It was able to grow at 10-40 °C (optimally at 30-35 °C) and at pH 5.

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A member of the genus , designated RCPT1-4, was isolated from compost of (Lam.), collected from an agricultural area in Rayong province, Thailand. The spore morphology and the presence of ll-diaminopimelic acid in the peptidoglycan indicate that RCPT1-4 shows the typical properties of members of the genus .

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Since 1995, more than 100 transgenic (Tg) mouse models of Alzheimer's disease (AD) have been generated in which mutant amyloid precursor protein (APP) or APP/presenilin 1 (PS1) cDNA is overexpressed ( ). Although many of these models successfully recapitulate major pathological hallmarks of the disease such as amyloid β peptide (Aβ) deposition and neuroinflammation, they have suffered from artificial phenotypes in the form of overproduced or mislocalized APP/PS1 and their functional fragments, as well as calpastatin deficiency-induced early lethality, calpain activation, neuronal cell death without tau pathology, endoplasmic reticulum stresses, and inflammasome involvement. Such artifacts bring two important uncertainties into play, these being (1) why the artifacts arise, and (2) how they affect the interpretation of experimental results.

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Article Synopsis
  • The study focuses on butyrate-producing bacteria in the human gut, emphasizing the need for taxonomic re-evaluation to enhance understanding of their ecological roles.
  • Researchers analyzed six specific bacterial strains along with two reference strains, determining that three of these strains belong to the same species based on genetic similarity, while the other three represent distinct species.
  • Based on various characterizations, three new species names are proposed for the novel findings, highlighting the diversity among the strains in terms of genetic and fatty acid composition.
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Human iPS cell-derived cartilaginous tissue spatially and functionally replaces nucleus pulposus.

Biomaterials

May 2022

Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan; Department of Tissue Biochemistry, Graduate School of Medicine and Frontier Biosciences, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan. Electronic address:

Article Synopsis
  • The loss of nucleus pulposus (NP) leads to intervertebral disk (IVD) degeneration, causing back pain, but implantation of human iPS cell-derived cartilaginous tissue (hiPS-Cart) can effectively restore this loss.
  • Single cell RNA sequencing revealed hiPS-Cart cells resemble chondrocyte-like NP cells, but they do not develop into notochordal NP cells, indicating chondrocyte-like cells may be sufficient for NP function.
  • Implanting hiPS-Cart into nuclectomized IVD spaces in nude rats not only prevented degeneration but also showed that the hiPS-Cart cells survived and maintained their presence for at least six months post-implantation. *
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Wilson's disease (WD) is a copper metabolic disorder caused by a defective ATP7B function. Conventional therapies cause severe side effects and significant variation in efficacy, according to cohort studies. Thus, exploring new therapeutic approaches to prevent progression to liver failure is urgent.

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Somatic cell reprogramming proceeds through a series of events to generate induced pluripotent stem cells (iPSCs). The early stage of reprogramming of mouse embryonic fibroblasts is characterized by rapid cell proliferation and morphological changes, which are accompanied by downregulation of mesenchyme-associated genes. However, the functional relevance of their downregulation to reprogramming remains poorly defined.

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Introduction: To assess value of placental vascularization indices (PVIs) for predicting preeclampsia (PE) and fetal growth restriction (FGR) in different stages of pregnancy in high-risk women.

Method: PVIs derived from 3-dimensional power doppler(3DPD) imaging were measured at seven stages of pregnancy: 11-13w, 15-19w, 20-23w, 24-27w, 28-31w, 32-36w, and ≥37w. PE and FGR were used as outcomes in logistic regression models.

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THP-1 is a representative leukemia cell line and is registered with four different numbers in JCRB and RIKEN BRC cell banks. However, differences between these four lines remain unclear. In our study, these four THP-1 cell lines, JCRB0112, JCRB0112.

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The litter size of mouse strains is determined by the number of oocytes naturally ovulated. Many attempts have been made to increase litter sizes by conventional superovulation regimens (e.g.

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Introduction: Clinical sequencing has provided molecular and therapeutic insights into the field of clinical oncology. However, despite its significance, its clinical utility in Japanese patients remains unknown. Here, we examined the clinical utility of tissue-based clinical sequencing with FoundationOne® CDx and FoundationOne® Heme.

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Regeneration of spermatogenesis by mouse germ cell transplantation into allogeneic and xenogeneic testis primordia or organoids.

Stem Cell Reports

April 2022

Department of Molecular Genetics, Graduate School of Medicine, Kyoto University, Yoshida Konoe, Sakyo-ku, Kyoto 606-8501, Japan. Electronic address:

Gametogenesis requires close interactions between germ cells and somatic cells. Derivation of sperm from spermatogonial stem cells (SSCs) is hampered by the inefficiency of spermatogonial transplantation technique in many animal species because it requires a large number of SSCs and depletion of endogenous spermatogenesis. Here we used mouse testis primordia and organoids to induce spermatogenesis from SSCs.

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Retinal dystrophies (RDs) lead to irreversible vision impairment with no radical treatment. Although photoreceptor cells (PRCs) differentiated from human induced pluripotent stem cells (iPSCs) are essential for the study of RDs as a scalable source, current differentiation methods for PRCs require multiple steps. To address these issues, we developed a method to generate PRCs from human iPSCs by introducing the transcription factors, CRX and NEUROD1.

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ICLAS Laboratory Animal Quality Network (LAQN) programs currently consist of the Performance Evaluation Program (PEP), which focuses on microbial monitoring by and for laboratory animal diagnostic laboratories, and the Genetic Reference Monitoring Program (GENRef), which provides assay-ready reference DNA for genetic testing of mouse strains. Since 2008, PEP has grown to become a truly international program with participating laboratories in 5 continents. Launched in 2016, GENRef currently distributes DNA from 12 common inbred mouse strains for use in genetic monitoring of locally inbred colonies as well as for genetic testing of stocks, particularly genetically engineered stocks, of uncertain origins.

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Generation of human induced pluripotent stem cell lines derived from four DiGeorge syndrome patients with 22q11.2 deletion.

Stem Cell Res

May 2022

iPS Cell Advanced Characterization and Development Team, BioResource Research Center, RIKEN, 3-1-1 Koyadai, Tsukuba, Ibaraki 305-0074, Japan. Electronic address:

DiGeorge syndrome (22q11.2 deletion syndrome, or CATCH22 syndrome), caused by hemizygous deletion of chromosome 22q11.2, results in the poor development of multiple organs.

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While the house mouse (Mus musculus), widely distributed in Eurasia, is known to have substantial coat color variation between and within local populations, in both primary and secondary distribution areas, including the Japanese archipelago, the evolutionary history of the color variation is poorly understood. To address the ventral fur color variation, we quantified the lightness of museum skin specimens, and found that the southern subspecies, M. m.

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sp. nov., isolated from the rumen of cows.

Int J Syst Evol Microbiol

March 2022

Institute of Livestock and Grassland Science, National Agricultural and Food Research Organization, Ibaraki 305-0901, Japan.

The genus plays an important role in polysaccharide degradation and fermentation in the rumen. To further understand the function of the phylogenetically diverse genus , it is necessary to explore the individual characteristics at the species level. In this study, Gram-negative anaerobic bacterial strains isolated from the rumen of Holstein cows were identified.

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Microbial flora is investigated to be related with neuropathological conditions in Alzheimer's disease (AD), and is attracting attention as a drug discovery resource. However, the relevance between the soil microbiota and the pathological condition has not been fully clarified due to the difficulty in isolation culture and the component complexity. In this study, we established a library of secondly metabolites produced in microorganism to investigate the potential effect of microorganisms on the production of amyloid β (Aβ), one of the most representative pathogens of AD.

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Article Synopsis
  • Oligodendrocyte precursor cells (OPCs) are essential for producing mature oligodendrocytes, and their differentiation is influenced by epigenetic factors.
  • This study investigates the role of High mobility group A1 (HMGA1), a nuclear protein that can modify DNA structure, on OPC differentiation by examining changes in mRNA levels of specific oligodendrocyte markers.
  • Results showed that manipulating HMGA1 levels affected the mRNA expressions of myelin-related genes, indicating its significant role in the differentiation process of OPCs.
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The African catfish () may exhibit the co-existence of XX/XY and ZZ/ZW sex-determination systems (SDSs). However, the SDS of African catfish might be influenced by a polygenic sex-determination (PSD) system, comprising multiple independently segregating sex "switch" loci to determine sex within a species. Here, we aimed to detect the existence of PSD using hybrid.

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Molecular therapies and functional studies greatly benefit from spatial and temporal precision of genetic intervention. We therefore conceived and explored tag-activated microRNA (miRNA)-mediated endogene deactivation (TAMED) as a research tool and potential lineage-specific therapy. For proof of principle, we aimed to deactivate γ-globin repressor in erythroid cells by tagging the 3' untranslated region (UTR) of with miRNA recognition sites (MRSs) for the abundant erythromiR miR-451a.

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Network-based assessments are important for disentangling complex microbial and microbial-host interactions and can provide the basis for microbial engineering. There is a growing recognition that chemical-mediated interactions are important for the coexistence of microbial species. However, so far, the methods used to infer microbial interactions have been validated with models assuming direct species-species interactions, such as generalized Lotka-Volterra models.

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Cellular and genetic understanding of the rice leaf size regulation is limited, despite rice being the staple food of more than half of the global population. We investigated the mechanism controlling the rice leaf length using cultivated and wild rice accessions that remarkably differed for leaf size. Comparative transcriptomics, gibberellic acid (GA) quantification and leaf kinematics of the contrasting accessions suggested the involvement of GA, cell cycle and growth-regulating factors (GRFs) in the rice leaf size regulation.

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Loss of the N-acetylgalactosamine side chain of the GPI-anchor impairs bone formation and brain functions and accelerates the prion disease pathology.

J Biol Chem

March 2022

Yabumoto Department of Intractable Disease Research, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan; WPI Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan. Electronic address:

Glycosylphosphatidylinositol (GPI) is a posttranslational glycolipid modification of proteins that anchors proteins in lipid rafts on the cell surface. Although some GPI-anchored proteins (GPI-APs), including the prion protein PrP, have a glycan side chain composed of N-acetylgalactosamine (GalNAc)-galactose-sialic acid on the core structure of GPI glycolipid, in vivo functions of this GPI-GalNAc side chain are largely unresolved. Here, we investigated the physiological and pathological roles of the GPI-GalNAc side chain in vivo by knocking out its initiation enzyme, PGAP4, in mice.

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CRISPR-Cas system in microbial hosts for terpenoid production.

Crit Rev Biotechnol

November 2022

Faculty of Biotechnology, Chemistry and Environmental Engineering, Phenikaa University, Hanoi, Viet Nam.

Terpenoids represent the largest group of secondary metabolites with variable structures and functions. Terpenoids are well known for their beneficial application in human life, such as pharmaceutical products, vitamins, hormones, anticancer drugs, cosmetics, flavors and fragrances, foods, agriculture, and biofuels. Recently, engineering microbial cells have been provided with a sustainable approach to produce terpenoids with high yields.

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