Organization
School of Life Science and Technology Assistant Professor
Title
Assistant Professor
External link
TAMORI MASAKI
Degree
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Doctor of Science ( The University of Tokyo, Graduate School of Science )
Research Areas
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Life Science / Animal physiological chemistry, physiology and behavioral biology
Education
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東京大学大学院 理学系研究科 動物学
- 1991
Country： Japan
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The University of Tokyo Faculty of Science
- 1987
Country： Japan
Research History
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Tokyo Institute of Technology Assistant Professor
2017.4
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Tokyo Institute of Technology
1991 - 2017.3
Professional Memberships
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日本動物学会
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日本比較生理生化学会
MISC
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Possible mechanisms of stiffness changes induced by stiffeners and softeners in catch connective tissue of echinoderms Reviewed
Masaki Tamori, Akira Yamada
Marine Drugs 21 140 2023.2
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Dumbbell-shaped ossicles discovered in pedicellaria of flower sea urchins Reviewed
Zoological Science 35 92 - 98 2018
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Ultrastructural changes associated with reversible stiffening in catch connective tissue of sea cucumbers Reviewed
PLOS ONE 11 e0155673 2016
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Softenin, a novel protein that softens the catch connective tissue of sea cucumbers through inhibiting interaction between collagen fibrils Reviewed
PLOS ONE 9 e85644 2014.1
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A novel stiffening factor inducing the stiffest state of holothurian catch connective tissue Reviewed
Journal of Experimental Biology 213 3416 - 3422 2010.10
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Evidence that water exudes when holothurian connective tissue stiffens. Reviewed
Journal of Experimental Biology 213 1960 - 1966 2010.6
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Stichopin-containing nerves and secretory cells specific to connective tissues of the sea cucumber
Masaki Tamori, Apurba Kumar Saha, Akira Matsuno, Sukumar Chandra Noskor, Osamu Koizumi, Yoshitaka Kobayakawa
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 274 ( 1623 ) 2279 - 2285 2007.9
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NGIWYamide-induced contraction of tube feet and distribution of NGIWYamide-like immunoreactivity in nerves of the starfish Asterina pectinifera
Apurba Kumar Saha, Masaki Tamori, Masahide Inoue, Yoko Nakajima, Tatsuo Motokawa
ZOOLOGICAL SCIENCE 23 ( 7 ) 627 - 632 2006.7
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Tensilin-like stiffening protein from Holothuria leucospilota does not induce the stiffest state of catch connective tissue
M Tamori, A Yamada, N Nishida, Y Motobayashi, K Oiwa, T Motokawa
JOURNAL OF EXPERIMENTAL BIOLOGY 209 ( 9 ) 1594 - 1602 2006.5
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Tensilin does not induce the stiffest state of holothurian dermis
Masaki Tamori, Akira Yamada, Kazuhiro Oiwa, Tatsuo Motokawa
ZOOLOGICAL SCIENCE 22 ( 12 ) 1492 - 1492 2005.12
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Innervation of holothurian body wall muscle: Inhibitory effects and localization of 5-HT
Masahide Inoue, Masaki Tamori, Tatsuo Motokawa
Zoological Science 19 ( 11 ) 1217 - 1222 2002.11
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Peptides controlling stiffness of connective tissue in sea cucumbers
R Birenheide, M Tamori, T Motokawa, M Ohtani, E Iwakoshi, Y Muneoka, T Fujita, H Minakata, K Nomoto
BIOLOGICAL BULLETIN 194 ( 3 ) 253 - 259 1998.6
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Structure and function of the pore canals of the sea urchin madreporite
M Tamori, A Matsuno, K Takahashi
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES 351 ( 1340 ) 659 - 676 1996.5
Presentations
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Recent studies on catch connective tissues. Invited
The 3rd JAMBIO Forum 2012.1
Research Projects
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Grant number：25HT0040 2025.4 - 2026.3
Grant type：Competitive
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Molecular mechanism of the stiffness change of catch connective tissue
Grant number：23570092 2011.4 - 2015.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
TAMORI Masaki, YAMADA Akira
Grant amount：\5460000 （ Direct Cost: \4200000 、 Indirect Cost：\1260000 ）
The holothurian body wall dermis is a catch connective tissue which changes its stiffness in response to stimulation. Substances which soften the dermis by working directly on its extracellular matrix had been unkown. We purified a softening protein from the dermis of a sea cucumber Stichopus chloronotus whose dermis dramatically softens in response to strong mechanical stimulation. We named this protein softenin. The apparent molecular mass of softenin is 20 kDa. Softenin softened the fresh dermis which contained living cells. The protein also softed the dermis whose cells had been disrupted. This result suggests that softenin softens the dermis by working directly on the extracellular matrix of the catch connective tissue.