Project description:Micrococcus yunnanensis TT9 was isolated from the forehead of human skin. This strain can grow on Triton X-100. We report the complete whole-genome sequence of this strain, which has one chromosome of 2,470,932 bp (73.0% G+C content) with 2,151 coding sequences.

| S-EPMC9476929 | biostudies-literature

MiR-431 attenuates synaptic plasticity and memory deficits in APPswe/PS1dE9 mice

Project description:Synaptic plasticity impairment plays a critical role in the pathogenesis of Alzheimer’s disease (AD), and emerging evidence has shown that microRNAs (miRNAs) are alternative biomarkers and therapeutic targets for synaptic dysfunctions in AD. In this study, we found that the level of miR-431 was downregulated in the plasma of amnestic mild cognitive impairment (aMCI) and AD patients. In addition, it was decreased in the hippocampus and plasma of APPswe/PS1dE9 (APP/PS1) mice. Lentivirus mediated miR-431 overexpression in the hippocampus CA1 ameliorated synaptic plasticity and memory deficits of APP/PS1 mice, while it didn't affect the Aβ levels. Smad4 was identified as a target of miR-431, and Smad4 knockdown modulated the expression of synaptic proteins including SAP102, and protected against synaptic plasticity and memory dysfunctions in APP/PS1 mice. Furthermore, Smad4 overexpression reversed the protective effects of miR-431, indicating that miR-431 attenuated synaptic impairment at least partially by Smad4 inhibition. Thus, these results indicated that miR-431/Smad4 might be a potential therapeutic target for AD treatment.

2023-05-15 | GSE231985 | GEO

Sinorhizobium medicae strain:431

Project description:Sinorhizobium medicae 431 Resequencing

| PRJNA499412 | ENA

Complete genome sequence of the motile actinomycete Actinoplanes missouriensis 431(T) (= NBRC 102363(T)).

Project description:Actinoplanes missouriensis Couch 1963 is a well-characterized member of the genus Actinoplanes, which is of morphological interest because its members typically produce sporangia containing motile spores. The sporangiospores are motile by means of flagella and exhibit chemotactic properties. It is of further interest that members of Actinoplanes are prolific sources of novel antibiotics, enzymes, and other bioactive compounds. Here, we describe the features of A. missouriensis 431(T), together with the complete genome sequence and annotation. The 8,773,466 bp genome contains 8,125 protein-coding and 79 RNA genes.

| S-EPMC3569393 | biostudies-literature

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