Motomichi Doi

ORCID: 0000-0002-7837-3056
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About
Contact & Profiles
Research Areas
  • Genetics, Aging, and Longevity in Model Organisms
  • Photoreceptor and optogenetics research
  • Physiological and biochemical adaptations
  • Spaceflight effects on biology
  • Circadian rhythm and melatonin
  • Insect and Arachnid Ecology and Behavior
  • Trypanosoma species research and implications
  • Alzheimer's disease research and treatments
  • Plant and animal studies
  • Cellular transport and secretion
  • CRISPR and Genetic Engineering
  • Insect behavior and control techniques
  • Neuroscience and Neural Engineering
  • Renal Diseases and Glomerulopathies
  • Retinal and Macular Surgery
  • Vasculitis and related conditions
  • Genetic diversity and population structure
  • Insect and Pesticide Research
  • High Altitude and Hypoxia
  • Photodynamic Therapy Research Studies
  • Heme Oxygenase-1 and Carbon Monoxide
  • Cancer, Hypoxia, and Metabolism
  • Apelin-related biomedical research
  • Monoclonal and Polyclonal Antibodies Research
  • Cancer Genomics and Diagnostics

National Institute of Advanced Industrial Science and Technology
2009-2022

University of Tsukuba
1994-2021

Shikoku Cancer Center
2019

Tokyo Metropolitan Komagome Hospital
2018

Kyorin University
2001

Pacific Northwest Diabetes Research Institute
2001

University of Washington
2001

Kure Medical Center
2000

Osaka Medical and Pharmaceutical University
1994

University of Alberta
1992-1993

Actin is a major structural component of the cytoskeleton in eukaryotic cells, and filamentous actin (F-actin) forms variety types cellular structures. Many probes have been developed to visualize F-actin architectures cells. However, it known that double-stained images obtained by two different often show partial inconsistencies. While developing probes, we observed merged three distinct each labeled with fluorescent dye (red, green blue), enabled various be distinguished based on color....

10.1101/2025.02.05.636544 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2025-02-08

To treat malignant glioma, standard fractionated radiotherapy (RT; 60 Gy/30 fractions over 6 weeks) was performed post-surgery in combination with temozolomide to improve overall survival. Malignant glioblastoma recurrence rate is extremely high, and most recurrent tumors originate from the excision cavity high-dose irradiation region. In our previous study, protoporphyrin IX physicochemically enhanced reactive oxygen species generation by ionizing radiation combined treatment...

10.3390/ijms22189762 article EN International Journal of Molecular Sciences 2021-09-09

The genetic basis of sexual isolation that contributes to speciation is one the unsolved questions in evolutionary biology. Drosophila ananassae and pallidosa are closely related, postmating has not developed between them. However, females both species discriminate their mating partners, this discrimination strong By using surgical treatments, we demonstrate male courtship songs play a dominant role female mate discrimination. absence song D. dramatically increased interspecies with but...

10.1073/pnas.091421598 article EN Proceedings of the National Academy of Sciences 2001-06-05

Propolis, a resinous substance collected by honeybees mixing their saliva with plant sources, including tree bark and leaves then mixed secreted beeswax, possesses variety of bioactivities. Whereas caffeic acid phenethyl ester (CAPE) has been recognized as major bioactive ingredient in New Zealand propolis, Brazilian green on the other hand, artepillin C (ARC). In this study, we report that, similar to CAPE, ARC docks into abrogates mortalin-p53 complexes, causing activation p53 growth...

10.3892/ijo.2018.4249 article EN International Journal of Oncology 2018-01-22

Abstract The intracellular accumulation of amyloid-β (Aβ) oligomers critically contributes to disease progression in Alzheimer’s (AD) and can be the potential target AD therapy. Direct observation molecular dynamics Aβ vivo is key for drug discovery research, however, it has been challenging because aggregation inhibits fluorescence from fusion proteins. Here, we developed 1-42 -GFP proteins that are oligomerized visualize their inside cells even when aggregated. We examined states Aβ-GFP...

10.1038/srep22712 article EN cc-by Scientific Reports 2016-03-16

Propylthiouracil (PTU) is known to cause vasculitis as a rare complication. We report the case of patient who developed alveolar haemorrhage and haematuria whilst treated with PTU. The serum was positive for antineutrophil cytoplasmic antibody (ANCA) myeloperoxidase (MPO) specificity (MPO-ANCA). All symptoms resolved completely after discontinuation Alveolar or pulmonary-renal syndrome associated may be new complication propylthiouracil therapy.

10.1183/09031936.97.10061405 article EN European Respiratory Journal 1997-06-01

Due to the huge number of neuronal cells in brain and their complex circuit formation, computer simulation activity is indispensable understanding whole dynamics. Recently, various computational models have been developed based on whole-brain calcium imaging data. However, these analyses monitor only cell bodies treat as point unit. This point-neuron model inexpensive costs, but unrealistically simplistic at representing intact neural activities brain. Here, we describe a novel three-unit...

10.1371/journal.pone.0168415 article EN cc-by PLoS ONE 2017-01-10

Drosophila ananassae and its relatives have many advantages as a model of genetic differentiation speciation. In this report, we examine evolutionary relationships in the species subgroup using multi-locus molecular data set, karyotypes, meiotic chromosome configuration, chromosomal inversions, morphological traits, patterns reproductive isolation. We describe several new taxa that are closest known D. ananassae. Analysis Y-chromosomal mitochondrial haplotypes, shared arrangements,...

10.4161/fly.8395 article EN Fly 2009-04-15

Abstract The heterozygous deletion of 15q13.3 is a recurrently observed microdeletion syndrome associated with relatively mild phenotype including learning disability and language impairment. In contrast, the homozygous extremely rare much severer that includes epileptic encephalopathy, profound intellectual disability, hypotonia. Which genes within deleted interval responsible for more severe features when biallelically currently unknown. Here, we report patient hypotonia, seizures who had...

10.1002/ajmg.a.62054 article EN American Journal of Medical Genetics Part A 2020-12-31

Colorectal cancer (CRC) is a heterogenous disease, and patients have differences in therapeutic response. However, the mechanisms underlying interpatient heterogeneity response to chemotherapeutic agents remain be elucidated, molecular tumor characteristics are required select for specific therapies. Patient-derived organoids (PDOs) established from CRCs recapitulate various biological of tissues, including cellular chemotherapy. show morphologies, but there no criteria defining these which...

10.1111/cas.15396 article EN cc-by-nc-nd Cancer Science 2022-05-19

Abstract. The courtship song emitted by male wing vibration has been regarded as one of the most important signals in sexual isolation species Drosophila melanogaster complex. Inter- and intraspecific crosses were observed using males whose wings removed (mute) or females aristae (deaf). Females D. melanogaster, simulans, mauritiana mated with heterospecific song-present condition (cross between normal winged males) more often than no-song wingless aristaless they showed no preference two...

10.1111/j.0014-3820.2000.tb00561.x article EN Evolution 2000-08-01

A supramolecular nanohybrid based on carbon nanotubes and liposomes that is highly biocompatible capable of permeation through cells described. The can be loaded with a variety functional molecules structurally controlled by near-infrared laser irradiation for the release from nanohybrids in targeted manner via microscopy. We implemented demonstrated remote regulation photoinduced functions. As proof principle, amiloride were successfully used spatiotemporally blocking amiloride-sensitive...

10.1002/anie.201504987 article EN Angewandte Chemie International Edition 2015-07-03

Abstract Ice-binding proteins (IBPs) are capable of binding ice crystals and inhibiting their growth at freezing temperatures. IBPs also thought to stabilize the cell membrane non-freezing temperatures near 0 °C. These two effects have been assumed reduce cold- freezing-induced damage cells tissues. However, knowledge regarding IBP on living animals is limited. Here, we characterized relationship between physiological role by using nematode Caenorhabditis elegans . The expression fish...

10.1038/s41598-019-42650-8 article EN cc-by Scientific Reports 2019-05-15

Abstract Oligomers of intracellular amyloid β protein (Aβ) are strongly cytotoxic and play crucial roles in synaptic transmission cognitive function Alzheimer’s disease (AD). However, there is currently no AD model mouse which to specifically analyze the Aβ oligomers only. We have now developed a novel mouse, an Aβ-GFP transgenic (Aβ-GFP Tg), that expresses GFP-fused human 1-42 protein, forms only within neurons throughout their life. The fusion proteins expressed mainly hippocampal CA1-CA2...

10.1038/s41598-019-53415-8 article EN cc-by Scientific Reports 2019-11-22

Recent reports have suggested that 5-aminolevulinic acid (5-ALA), which is a precursor to protoporphyrin IX (PpIX), leads selective accumulation of PpIX in tumor cells and acts as radiation sensitizer vitro vivo mouse models melanoma, glioma, colon cancer. In this study, we investigated the effect under X-ray irradiation through ROS generation DNA damage. by interaction between was evaluated two kinds probes, 3′-(p-aminophenyl) fluorescein (APF) for hydroxyl radical (•OH) detection...

10.3390/ijms21072302 article EN International Journal of Molecular Sciences 2020-03-26

The neural networks that regulate animal behaviors are encoded in terms of neuronal excitation and inhibition at the synapse. However, how temporal activity circuits is dynamically precisely characterized by each signaling interaction via excitatory or inhibitory synapses, both synaptic patterns organized to achieve fine regulation circuit activities unclear. Here, we show Caenorhabditis elegans, excitatory/inhibitory switch from asymmetric sensory neurons (ASEL/R) following changes NaCl...

10.3389/fnmol.2018.00484 article EN cc-by Frontiers in Molecular Neuroscience 2019-01-08

Sexual isolation is one of the most important mechanisms that may lead to speciation. Drosophila ananassae and D. pallidosa are useful for study sexual isolation, because their sympatric distribution no postmating between them. Courtship songs considered play a crucial role in pallidosa. We recorded analyzed male courtship eight four geographical strains, respectively. behaviors two species were consistent with those previously described, however, male's middle leg shaking, which had not...

10.1266/ggs.77.97 article EN Genes & Genetic Systems 2002-01-01

Trypanosoma cruzi has three distinct life cycle stages; epimastigote, trypomastigote, and amastigote. Amastigote is the replication stage in host mammalian cells, hence this of parasite clinical significance drug development research. Presence extracellular amastigotes (EA) their infection capability have been known for some decades. Here, we demonstrate that EA can be utilized as an axenic culture to aid stage-specific study T. cruzi. Amastigote-like property amastigote sustained LIT medium...

10.1371/journal.pntd.0007088 article EN cc-by PLoS neglected tropical diseases 2019-01-14
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