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Comparative analysis of Hmx expression and the distribution of neuronal somata in the trigeminal ganglion in lamprey and shark: insights into the homology of the trigeminal nerve branches and the evolutionary origin of the vertebrate jaw
Tamura, Motoki; Ishikawa, Ryota; Nakanishi, Yuki; Pascual-Anaya, Juan; Fukui, Makiko; Saitou, Takashi; Sugahara, Fumiaki; Rijli, Filippo M.; Kuratani, Shigeru; Suzuki, Daichi G.; Murakami, Yasunori[et al.] (BMC, 2023-12-05)The evolutionary origin of the jaw remains one of the most enigmatic events in vertebrate evolution. The trigeminal nerve is a key component for understanding jaw evolution, as it plays a crucial role as a sensorimotor ... -
Evidence from cyclostomes for complex regionalization of the ancestral vertebrate brain.
Sugahara, Fumiaki; Pascual-Anaya, Juan; Oisi, Yasuhiro; Kuraku, Shigehiro; Aota, Shin-ichi; Adachi, Noritaka; Takagi, Wataru; Hirai, Tamami; Murakami, Yasunori; Kuratani, Shigeru[et al.] (Nature Research, 2016)The vertebrate brain is highly complex, but its evolutionary origin remains elusive. Because of the absence of certain developmental domains generally marked by the expression of regulatory genes, the embryonic brain of ... -
Hagfish and lamprey Hox genes reveal conservation of temporal colinearity in vertebrates
Pascual-Anaya, Juan; Sato, Iori; Sugahara, Fumiaki; Higuchi, Shinnosuke; Paps, Jordi; Ren, Yandong; Takagi, Wataru; Ruiz-Villalba, Adrián; Ota, Kinya G.; Wang, Wen; Kuratani, Shigeru[et al.] (Springer Nature, 2018)Hox genes exert fundamental roles for proper regional specification along the main rostro-caudal axis of animal embryos. They are generally expressed in restricted spatial domains according to their position in the cluster ... -
Hagfish genome elucidates vertebrate whole-genome duplication events and their evolutionary consequences
Yu, Daqi; Ren, Yandong; Uesaka, Masahiro; Beavan, Alan J. S.; Muffato, Matthieu; Shen, Jieyu; Li, Yongxin; Sato, Iori; Wan, Wenting; Clark, James W.; Keating, Joseph N.; Carlisle, Emily M.; Dearden, Richard P.; Giles, Sam; Randle, Emma; Sansom, Robert S.; Feuda, Roberto; Fleming, James F.; Sugahara, Fumiaki; Cummins, Carla; Patricio, Mateus; Akanni, Wasiu; D'Aniello, Salvatore; Bertolucci, Cristiano; Irie, Naoki; Alev, Cantas; Sheng, Guojun; de Mendoza, Alex; Maeso, Ignacio; Irimia, Manuel; Fromm, Bastian; Peterson, Kevin J.; Das, Sabyasachi; Hirano, Masayuki; Rast, Jonathan P.; Cooper, Max D.; Paps, Jordi; Pisani, Davide; Kuratani, Shigeru; Martin, Fergal J.; Wang, Wen; Donoghue, Philip C. J.; Zhang, Yong E.; Pascual-Anaya, Juan[et al.] (Springer Nature, 2024-03)Polyploidy or whole-genome duplication (WGD) is a major event that drastically reshapes genome architecture and is often assumed to be causally associated with organismal innovations and radiations. The 2R hypothesis ... -
Inner ear development in cyclostomes and evolution of the vertebrate semicircular canals
Higuchi, Shinnosuke; Sugahara, Fumiaki; Pascual-Anaya, Juan; Takagi, Wataru; Oisi, Yasuhiro; Kuratani, Shigeru[et al.] (Springer Nature, 2019)Jawed vertebrates have inner ears with three semicircular canals, the presence of which has been used as a key to understanding evolutionary relationships. Ostracoderms, the jawless stem gnathostomes, had only two canals ... -
Thyroid and endostyle development in cyclostomes provides new insights into the evolutionary history of vertebrates
Takagi, Wataru; Sugahara, Fumiaki; Higuchi, Shinnosuke; Kusakabe, Rie; Pascual-Anaya, Juan; Sato, Iori; Oisi, Yasuhiro; Ogawa, Nobuhiro; Miyanishi, Hiroshi; Adachi, Noritaka; Hyodo, Susumu; Kuratani, Shigeru[et al.] (BMC, 2022)The endostyle is an epithelial exocrine gland found in non‑vertebrate chordates (amphioxi and tunicates) and the larvae of modern lampreys. It is generally considered to be an evolutionary precursor of the thyroid gland ...