Publications by authors named "Motoyama T"

Exacerbation of scarring can originate from a minority fibroblast population that has undergone inflammatory-mediated genetic changes within the wound microenvironment. The fundamental relationship between molecular and spatial organization of the repair process at the single-cell level remains unclear. We have developed a novel, high-resolution spatial multiomics method that integrates spatial transcriptomics with scRNA-Seq; we identified new characteristic features of cell-cell communication and signaling during the repair process.

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Unlabelled: Mammalian alkaline phosphatase (AP) is widely used in diagnostics and molecular biology but its widespread use is impaired because it is difficult to express in and has low thermostability. To overcome these challenges, we employed sequence-based protein redesign methods, specifically full consensus design (FCD) and ancestral sequence reconstruction (ASR), to create APs with enhanced properties. Biochemical analyses revealed that these newly designed APs exhibited improved levels of expression in their active form and increased thermostability compared to bovine intestinal AP isozyme II (bIAPII), without impeding enzymatic activity.

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Chemical compounds that affect microbial interactions have attracted wide interest. In this study, Streptomyces griseus showed enhanced growth when cocultured with the rice blast fungus Pyricularia oryzae on potato dextrose agar (PDA) medium. An improvement in S.

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Food allergies are a significant health issue worldwide. In many countries, labeling of primary allergens in food products has been made mandatory to ensure consumer safety. In food manufacturing settings, the lateral flow immunoassay (LFI)-based on antigen-antibody reactions-is a rapid and accurate method for allergen testing and is widely used.

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Ovarian squamous cell carcinoma (SCC) is rare, and most cases arise from ovarian teratomas. Herein, we present a case of ovarian SCC arising from an ovarian seromucinous borderline tumor (SMBT) with squamous overgrowth. A 71-year-old woman an underwent emergency laparotomy due to the rupture of a right ovarian tumor suspected to be a borderline or malignant tumor.

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Colletotrichum higginsianum is a hemibiotrophic pathogen that causes anthracnose disease on crucifer hosts, including Arabidopsis thaliana. Despite the availability of genomic and transcriptomic information and the ability to transform both organisms, identifying C. higginsianum genes involved in virulence has been challenging due to recalcitrance to gene targeting and redundancy of virulence factors.

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Retinoid X receptor (RXR), a nuclear receptor (NR) that regulates transcription of target genes in a ligand binding-dependent manner, is of interest as a drug target. RXR agonists have been developed as therapeutic agents for cutaneous invasive T-cell lymphoma (e.g.

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Article Synopsis
  • The study investigates the spatial genomic diversity of squamous cell carcinoma that develops from ovarian mature cystic teratomas (MCT-SCCs) by analyzing 16 samples from different tumor regions.
  • It finds significant histological variation in the tumors, with each showing distinct somatic mutation profiles and an APOBEC mutagenesis signature across all regions.
  • The research highlights that MCT-SCCs are highly heterogeneous, with differing clonal evolution patterns and genetic characteristics, emphasizing the need to assess genetic variations within the tumor for better understanding and treatment.
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Proteasome inhibitors with γ-lactam structure, such as lactacystin and salinosporamide A, have been isolated from actinomycetes and have attracted attention as lead compounds for anticancer drugs. Previously, we identified a unique enzyme TAS1, which is the first reported fungal NRPS-PKS hybrid enzyme, from the filamentous fungus for the biosynthesis of a mycotoxin tenuazonic acid, a tetramic acid compound without γ-lactam structure. Homologues of have been identified in several fungal genomes and classified into four groups (A-D).

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The flavin-dependent amine oxidase superfamily contains various l-amino acid oxidases (LAAOs) bearing different substrate specificities and enzymatic properties. LAAOs catalyze the oxidation of the α-amino group of l-amino acids (L-AAs) to produce imino acids and HO. In this study, an ancestral l-Lys α-oxidase (AncLLysO2) was designed utilizing genome-mined sequences from the species.

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Article Synopsis
  • * The engineered enzyme AncT4_2, developed through ancestral sequence reconstruction, shows superior performance to the natural T4 RNA ligase, including higher productivity, turnover rate, and temperature stability, with better activity on various modified RNA fragments.
  • * This enzyme's enhanced properties make it a valuable tool for producing RNA therapeutics at higher concentrations, highlighting its potential role as a key biocatalyst in future medical applications.
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Mixed corticomedullary tumor (MCMT) of the adrenal gland is an extremely rare tumor characterized by an admixture of steroidogenic cells and chromaffin cells in a single tumor mass simultaneously producing adrenocortical hormones and catecholamines; it is associated with ectopic adrenocorticotropic hormone (ACTH) in some cases. We reviewed and summarized clinicopathological data of 28 MCMTs, including four metastatic tumors in 26 previous reports. These reports included 21 females and 7 males, and the average tumor sizes were 4.

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Fungi belonging to the Ascomycete genus Cordyceps are endoparasitoids and parasites, mainly of insects and other arthropods. Cordyceps militaris has been used as a therapeutic drug for cancer patients. However, the infection, parasitism, and fruiting body formation mechanisms of this fungus are still unknown.

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Oil-in-water (O/W) emulsions containing ethanol have been used in food, cosmetics, paints, and other applications. However, O/W emulsions with long-term stability are difficult to produce at high ethanol concentrations because the adsorption of the emulsifier at the O/W interface is restricted by ethanol. In this study, to resolve this issue, we prepared ethanol-containing O/W emulsions with high dispersion stability using a series of polyglycerol monofatty acid esters (PGFEs) with different fatty acid chain lengths, which are bio-safe nonionic surfactants, as emulsifiers.

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Fusarium sp. RK97-94 is a producer of potent antimalarial compounds such as lucilactaene and its derivatives. The biosynthetic gene cluster of lucilactaene was identified but only a knockout mutant of methyltransferase (luc1) was reported in previous papers.

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Melanin is a secondary metabolite required for the infection of the rice blast fungus . Melanin biosynthesis enzymes are targets for controlling rice blast disease, and three types of commercial melanin biosynthesis inhibitors (MBIs) including MBI-R, MBI-D, and MBI-P have been developed. However, the occurrence of MBI-D-resistant strains containing scytalone dehydratase (SDH1/RSY1) with V75M mutations has been recently reported.

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Article Synopsis
  • Somatic mutations in cancer-associated genes are found to accumulate in normal endometrial tissue, but their evolutionary timeline and spread are not well understood.
  • Researchers sequenced 1311 endometrial glands from 37 women to investigate the clonal expansion of these mutations and discovered that clusters of glands with the same mutations are found throughout the endometrium, indicating a shared origin.
  • The study highlights "rhizome structures" as a pathway for these mutant clones to expand and evolve, with findings suggesting that mutations can develop early in life and persist in the endometrium, paving the way for insights into endometrial health and potential therapies for related diseases.
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A recently discovered secondary metabolism regulator, NPD938, was used to alter the secondary metabolite profile in sp. RK97-94. Three lucilactaene analogues were detected via UPLC-ESI-MS analysis in NPD938-treated culture.

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Article Synopsis
  • Tenuazonic acid (TeA) is a toxin from the rice blast fungus Pyricularia oryzae that plays a role in its infection process.
  • Despite the knockout of the gene responsible for TeA production (TAS1) not impacting the fungus's ability to cause disease, constant expression of this gene actually hindered its infection capability.
  • The findings indicate that regulating the biosynthesis of TeA is crucial for the successful infection of plants by P. oryzae.
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Background: Although ovarian clear cell carcinoma (CCC) is associated with high incidence of thromboembolism, the clinicopathological and biological significance of hypercoagulable status in CCC remains unclear.

Materials And Methods: We retrospectively analyzed pretreatment D-dimer levels, thromboembolic status, and clinical outcome of 125 CCCs in the discovery set and 143 CCCs in two other independent validation sets. Next, we performed RNA sequencing of 93 CCCs and compared coagulation-related gene profiles with 2492 pan-cancer data.

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Filamentous fungi have many secondary metabolism genes and produce a wide variety of secondary metabolites with complex and unique structures. However, the role of most secondary metabolites remains unclear. Moreover, most fungal secondary metabolism genes are silent or poorly expressed under laboratory conditions and are difficult to utilize.

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The control of secondary metabolism in fungi is essential for the regulation of various cellular functions. In this study, we searched the RIKEN Natural Products Depository (NPDepo) chemical library for inducers of tenuazonic acid (TeA) production in the rice blast fungus Pyricularia oryzae and identified NPD938. NPD938 transcriptionally induced TeA production.

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Pyrazines are typically formed from amino acids and sugars in chemical reactions such as the Maillard reaction. In this study, we demonstrate that 3-ethyl-2,5-dimethylpyrazine can be produced from L-Thr by a simple bacterial operon. We conclude that EDMP is synthesized chemoenzymatically from L-Thr via the condensation reaction of two molecules of aminoacetone and one molecule of acetaldehyde.

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Article Synopsis
  • Traditional 2D imaging doesn't fully capture the complex structure of endometrial glands, which have intricate winding patterns.
  • Researchers used 3D imaging techniques on human uterine tissue to reveal that these glands form a network in the stratum basalis and extend through the muscular layer, resembling a grass rhizome.
  • The study also applied this 3D method to examine adenomyosis, discovering that endometrial glands invade the myometrium and form an ant colony-like network, enhancing our understanding of endometrial-related diseases.
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Dihydropyriculol is a major secondary metabolite of Pyricularia oryzae. However, the biological activity of dihydropyriculol has not been reported. Here, we showed that dihydropyriculol has inhibitory activity against Streptomyces griseus.

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