Faculty Profiles - HAGIO Hanako

Papers - HAGIO Hanako

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Fish that fish for fish-a peculiar location of "fishing motoneurons" in the striated frogfish Antennarius striatus Reviewed

Hanako Hagio, Hirotaka Nishino, Kenta Miyake, Nene Sato, Kei Sawada, Tomoya Nakayama, Naoyuki Yamamoto

Journal of Comparative Neurology Vol. 532 ( 10 ) page： e25674 2024.10

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley

ABSTRACT

In lophiform teleosts, the first dorsal fin has evolved as a specialized structure called the “illicium” equipped with the esca, which is a modified skin flap used to attract small fish for predation. The motor control system of the illicium, however, remained unknown. The present study investigated the innervation of muscles for the illicium and morphology of motoneurons innervating them in the striated frogfish Antennarius striatus. We found that the dorsal ramus of occipital nerve innervates the muscles. Motoneurons for the illicium are present in the dorsolateral zone of ventral horn at the medullo‐spinal boundary level, forming a cluster somewhat distinct from other motoneurons of the ventral horn. Motoneurons for the second to fourth dorsal fins and pectoral fin were located in the ventrolateral and ventromedial zones of ventral horn, respectively, whereas those of the dorsal trunk muscle in the dorsomedial zone of ventral horn. Motoneurons for the first dorsal spine of white‐spotted pygmy filefish were also investigated for species comparison and were found to locate in the ventrolateral zone of ventral horn, similarly to the motoneurons for the second to fourth dorsal fins of the frogfish. These results suggest that motoneurons for the illicium have become segregated from other motoneurons to be situated in an unusual dorsal position for a motoneuron pool of a dorsal fin, in concert with the evolution of specialized “fishing behavior” performed by the illicium.

DOI： 10.1002/cne.25674

Web of Science

Scopus

PubMed

Different ways of evolving tool-using brains in teleosts and amniotes Reviewed International coauthorship International journal

Pierre Estienne, Matthieu Simion, Hanako Hagio, Naoyuki Yamamoto , Arnim Jenett, Kei Yamamoto

Communications Biology Vol. 7 page： 88 2024.1

Optogenetic manipulation of Gq- and Gi/o-coupled receptor signaling in neurons and heart muscle cells Reviewed International coauthorship International journal

Hagio Hanako, Koyama Wataru, Hosaka Shiori, Song Aysenur Deniz, Narantsatsral Janchiv, Matsuda Koji, Sugihara Tomohiro, Shimizu Takashi, Koyanagi Mitsumasa, Terakita Akihisa, Hibi Masahiko, Jesuthasan Suresh

eLife Vol. 12 2023.8

Authorship：Lead author Language：English Publisher：eLife

G-protein-coupled receptors (GPCRs) transmit signals into cells depending on the G protein type. To analyze the functions of GPCR signaling, we assessed the effectiveness of animal G-protein-coupled bistable rhodopsins that can be controlled into active and inactive states by light application using zebrafish. We expressed Gq- and Gi/o-coupled bistable rhodopsins in hindbrain reticulospinal V2a neurons, which are involved in locomotion, or in cardiomyocytes. Light stimulation of the reticulospinal V2a neurons expressing Gq-coupled spider Rh1 resulted in an increase in the intracellular Ca2+ level and evoked swimming behavior. Light stimulation of cardiomyocytes expressing the Gi/o-coupled mosquito Opn3, pufferfish TMT opsin, or lamprey parapinopsin induced cardiac arrest, and the effect was suppressed by treatment with pertussis toxin or barium, suggesting that Gi/o-dependent regulation of inward-rectifier K+ channels controls cardiac function. These data indicate that these rhodopsins are useful for optogenetic control of GPCR-mediated signaling in zebrafish neurons and cardiomyocytes.

DOI： 10.7554/eLife.83974

Web of Science

Scopus

PubMed

Optogenetic manipulation of neuronal and cardiomyocyte functions in zebrafish using microbial rhodopsins and adenylyl cyclases Reviewed International coauthorship International journal

Hagio Hanako, Koyama Wataru, Hosaka Shiori, Song Aysenur Deniz, Narantsatsral Janchiv, Matsuda Koji, Shimizu Takashi, Hososhima Shoko, Tsunoda Satoshi P., Kandori Hideki, Hibi Masahiko

eLife Vol. 12 2023.8

Authorship：Lead author Language：English Publisher：eLife

Even though microbial photosensitive proteins have been used for optogenetics, their use should be optimized to precisely control cell and tissue functions in vivo. We exploited GtCCR4 and KnChR, cation channelrhodopsins from algae, BeGC1, a guanylyl cyclase rhodopsin from a fungus, and photoactivated adenylyl cyclases (PACs) from cyanobacteria (OaPAC) or bacteria (bPAC), to control cell functions in zebrafish. Optical activation of GtCCR4 and KnChR in the hindbrain reticulospinal V2a neurons, which are involved in locomotion, induced swimming behavior at relatively short latencies, whereas activation of BeGC1 or PACs achieved it at long latencies. Activation of GtCCR4 and KnChR in cardiomyocytes induced cardiac arrest, whereas activation of bPAC gradually induced bradycardia. KnChR activation led to an increase in intracellular Ca2+ in the heart, suggesting that depolarization caused cardiac arrest. These data suggest that these optogenetic tools can be used to reveal the function and regulation of zebrafish neurons and cardiomyocytes.

DOI： 10.7554/eLife.83975

Web of Science

Scopus

PubMed

Ascending Visual Pathways to the Telencephalon in Teleosts with Special Focus on Forebrain Visual Centers, Associated Neural Circuitries, and Evolution Invited Reviewed International journal

Hanako Hagio, Naoyuki Yamamoto

Zoological Science Vol. 40 page： 105 - 118 2023.3

Afferent and efferent connections of the nucleus prethalamicus in the yellowfin goby Acanthogobius flavimanus Reviewed International journal

Hanako Hagio, Masahumi Kawaguchi, Hideki Abe, Naoyuki Yamamoto

Journal of Comparative Neurology Vol. 529 ( 1 ) page： 87 - 110 2021.1

Non-thalamic origin of zebrafish sensory nuclei implies convergent evolution of visual pathways in amniotes and teleosts Reviewed International coauthorship International journal

Solal Bloch§, Hanako Hagio§, Manon Thomas, Aurélie Heuzé, Jean-Michel Hermel, Elodie Lasserre, Ingrid Colin, Kimiko Saka, Pierre Affaticati, Arnim Jenett, Koichi Kawakami, Naoyuki Yamamoto, Kei Yamamoto

eLife Vol. 9 page： 1 - 27 2020.9