English
Molecular mechanisms involved in organogenesis (eg., teeth, tongue, mandibles, eyelids, lips, palate, eyes, palatal rugae, and the face)
Each organ develops into a particular shape and size at the appropriate location, with a specific number of each. For example, there are no feet on the face, no ears on the stomach, and so on. Teeth develop in a certain order and number. Hence, we aim to elucidate how the number, shape, size, location, and type of organs are determined?
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Nat Genet 44:348-51, 2012
PLos ONE 20:e0204126, 2018
Dev Biol 365:61-70, 2012
PNAS 108:19270-5, 2011
J Dent Res 92:229-34, 2013
PLos ONE 9:e43857, 2012
Approaches for understanding congenital diseases
Ectodermal dysplasia
Ectodermal dysplasia is a congenital disorder that causes abnormalities in organs derived from the ectoderm, such as teeth, mammary glands, sweat glands, nails, and hair. We are working on elucidating the mechanisms underlying the onset of this disease.
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Dev Cell 6:219-27, 2004
J Dent Res 94:121-8, 2015
Ciliopathy
Primary cilia have long been considered as organelles that have lost their original function during evolution. However, in recent years, it has become clear that they play critical roles including regulation of signaling pathways. Dysfunction of the primary cilia causes a disease called ciliopathy, which is a wide spectrum of human diseases. We are working on elucidating the function of the primary cilia in order to help understand ciliopathy.
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Development 136:897-903, 2009
Hum Mol Genet 22:1873-85, 2013
eLife 13:e85042, 2024
Front Cell Dev Biol. 13:1627730,2025
Others
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Dev Dyn 236:2884-8, 2007
X-inactivation（Lyonization）
In females, one of the two X chromosomes is inactivated in most cells.
We are working to elucidate the role of X-inactivation in organogenesis.
J Dent Res , 2026
Molecular mechanisms involved in stem cell regulation
Mouse incisors grow continuously throughout their lifetimes, which is due to the presence of stem cells. We are working on elucidating the molecular mechanism involved in regulating stem cells using mouse incisors.
Approaches for understanding evolution
Each organ has acquired its current function and morphology through evolution. The phenomena observed in developmental processes (both at the molecular and morphological levels) are thought to be also the result of evolutionary processes. Therefore, it is extremely important in developmental biology to consider evolution. How have the various organs in our body evolved? Can we reverse evolutionary processes by manipulating genes? We are working on clarifying such questions.
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PNAS 107:92-7, 2010
Genesis 48:382-9, 2010
DNA damage and senescence in embryonic tissue
It is believed that the embryo is extremely stable in utero. However, in recent years, it has become clear that DNA damage and senescence seem to occur both in embryos and the adult body. We are working to understand why these phenomena occur in embryos.