Satoshi Nakagawa

Subcuticular symbionts of intertidal brittle stars: diversity, host specificity, and functional potential

Keisuke Kawano, Hiroyuki Morimura, Tatsuya Awano, Yoshitomo Kikuchi et autres

Abstract Echinoderms, widely distributed and abundant marine invertebrates, host diverse microbial communities, including subcuticular symbiotic bacteria (SCB). However, the diversity and functional roles of these bacteria remain largely unexplored in intertidal brittle stars. Here, we utilized both culture-dependent and -independent methods to …

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Induction of Melanin Synthesis by Pueraria lobata Leaves in B16 Murine Melanoma Cells and Three-Dimensional Human Skin Equivalent

Takuhiro Uto, Tomoe Ohta, Mana Kairada, Jin Yoshitomi et autres

Puerariae Radix, the root of Pueraria lobata (Willd.) Ohwi is primarily used as a traditional herbal medicine in East Asia. Although phytochemical and biological investigations of the roots have been well-reported, those of the leaves are limited. To explore the potential value …

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Pyrodictium

Satoshi Nakagawa, James F. Holden

Abstract Pyr.o.dic'ti.um. Gr. neut. n. pŷr , fire; Gr. neut. n. diktyon , lattice‐work, network; N.L. neut. n. Pyrodictium , fire‐loving network. Cells are disk‐, dish‐, or coccoid‐shaped, with diameters varying from 0.3 to 2.5 μm. Strictly anaerobic, nonmotile. Often produce tubule‐shaped …

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Pyrofollis

Satoshi Nakagawa

Abstract Pyr.o.fol.lis. Gr. neut. n. pŷr , fire; L. masc. n. follis , a cushion or pillow inflated with air; N.L. masc. n. Pyrofollis , a cushion living in an extremely hot environment. Cells are strictly anaerobic, nonmotile, 1–3 μm irregular cocci. …

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Exploring protein N -glycosylation in ammonia-oxidizing Nitrososphaerota archaea through glycoproteomic analysis

Satoshi Nakagawa, Hirokazu Yagi, Shigeru Shimamura, Saeko Yanaka et autres

ABSTRACT Ammonia-oxidizing archaea of the phylum Nitrososphaerota , formerly known as Thaumarchaeota , are globally distributed and play critical roles in the nitrogen and carbon cycles, particularly in environments with low ammonia concentrations. Like most archaea, Nitrososphaerota cells are enveloped by S-layer …

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Eukaryotes’ closest relatives are internally simple syntrophic archaea

Hiroyuki Imachi, Masaru K. Nobu, Shun’ichi Ishii, Yuga Hirakata et autres

Abstract Eukaryotes are theorized to have originated from an archaeal phylum Promethearchaeota (formerly ‘Asgard’ archaea) 1,2 . The first cultured representatives revealed valuable insight 3,4 but are distantly related to the first eukaryotic common ancestor (FECA), leaving many unknowns regarding this archaeon’s …

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Artemisia capillaris with two novel active compounds, Kawarayomogin I and II, inhibits HYBID (KIAA1199) expression as well as hyaluronic acid degradation

Kazal Boron Biswas, Yuka Kawai, Satoshi Nakagawa, Kyoko Kanai et autres

Hyaluronic acid (HA) is an important component of the skin's extracellular matrix, and its degradation leads to wrinkles. Hyaluronan-binding protein involved in hyaluronan depolymerization (HYBID) is the main factor responsible for HA degradation in dermis. This study aimed to identify natural plant …

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Connecting Individuals, Communities, and Society Through Crowdfunding

Satoshi Nakagawa

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Proposal for a Control System that Combines Straight Driving and Turning for Hands-free Mobility Considering Subjective Operating Sensation

Yoshito Kamon, Misato NIHEI, Satoshi Nakagawa, Yusuke Sugahara

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Paralimibaculum aggregatum gen. nov. sp. nov. and Biformimicrobium ophioploci gen. nov. sp. nov., two novel heterotrophs from brittle star Ophioplocus japonicus

Keisuke Kawano, Tatsuya Awano, Arata Yoshinaga, Junji Sugiyama et autres

Two novel Gram-stain-negative, strictly aerobic, halophilic and non-motile bacterial strains, designated NKW23T and NKW57T, were isolated from a brittle star Ophioplocus japonicus collected from a tidal pool in Wakayama, Japan. The results of phylogenetic analysis based on 16S rRNA gene sequences indicated …

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N -linked protein glycosylation in Nanobdellati (formerly DPANN) archaea and their hosts

Satoshi Nakagawa, Hiroyuki D. Sakai, Shigeru Shimamura, Yoshiki Takamatsu et autres

ABSTRACT Members of the kingdom Nanobdellati , previously known as DPANN archaea, are characterized by ultrasmall cell sizes and reduced genomes. They primarily thrive through ectosymbiotic interactions with specific hosts in diverse environments. Recent successful cultivations have emphasized the importance of adhesion …

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079 HYBID-suppressing effect of Artemisia capillaris flower extract is mediated through the overexpression of miR-486-5p in human dermal fibroblasts

K. Biswas, Yuka Kawai, Satoshi Nakagawa, Kazuo Kanai et autres

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