Laboratory for Cell Signaling
Signaling regulation for all steps of antigen recognition, activation and development of T cells are analyzed. These include the regulation of immunological synapse, TCR signal transduction, co-stimulation regulation and signaling in T cell development. Since T cells play central roles in the regulation of immune responses and diseases, results will be utilized for immune-modulation.
- Regulation of activation and tolerance of T cells
- Spatial and temporal regulation of immunological synapse and cell activation
- Signal Interface of innate and acquired immunity
- May 08, 2007
- The Laboratory for Cell Signaling of RCAI has elucidated a new activation mechanism for innate immunity, the frontier of biological defense system studies.
- September 08, 2008
- Clarification of a receptor causing inflammation in response to tissue damage
- October 10, 2008
- Elucidation of molecular mechanism determining immune response susceptibility based on the identification of a micro-cluster of CD28, an auxiliary stimulus receptor of T-cell
- January 20, 2009
- Identifying a receptor to Malassezia, a pathogenic fungus causing skin disease, opening the possibility of medical access to fungus induced diseases
- Hashimoto-Tane A., Yokosuka T., Sakata-Sogawa K., Sakuma M., Ishihara C., Tokunaga M., Saito T.:
"Dynein-driven transport of T cell receptor microclusters regulates immune synapse formation and T cell activation."
Immunity. 34:919-931, 2011. - Yokosuka, T., Kobayashi, W., Takamatsu, M., Sakata-Sogawa, K., Zeng, H., Hashimoto-Tane, A., Yagita, H., Tokunaga, M., Saito, T.:
"Spatiotemporal basis of CTLA-4 costimulatory molecule-mediated negative regulation of T cell activation."
Immunity. 33: 326-339, 2010. - Takeuchi A, Itoh Y, Takumi A, Ishihara C, Arase N, Yokosuka T, Koseki H, Yamasaki S, Takai Y, Miyoshi J, Ogasawara K, and Saito T.:
"CRTAM confers late-stage activation of CD8+ T cells to regulate retention within lymph node."
J. Immunol. 183: 4220-4228, 2009. - Yamasaki, S., Matsumoto, M., Takeuchi, O., Matsuzawa, T., Ishikawa, E., Sakuma, M., Tateno, H., Uno, J., Hirabayashi, J., Mikami, Y., Takeda, K., Akira, S., and Saito, T.:
"C-type lectin Mincle is an activating receptor for pathogenic fungus, Malassezia."
Proc. Natl. Acad. Sci. USA. 10: 1897-1902, 2009. - Yokosuka, T., Kobayashi, W., Sakata-Sogawa, K., Takamatsu, M., Hashimoto-Tane, A., Dustin, M.L., Tokunaga, M. and Saito, T.:
"Spatiotemporal regulation of T cell costimulation by TCR-CD28 microclusters through protein kinase C θ translocation."
Immunity. 29: 589-601, 2008. - Yamasaki, S., Ishikawa, E., Sakuma, M., Hara, H., Ogata, K. and Saito, T.:
"Mincle is an ITAM-coupled activating receptor that senses damaged cells."
Nat. Immunol. 9: 1179-1188, 2008. - Hara, H., Ishihara, C., Takeuchi, A., Imanishi, T., Xue, L., Morris, S.W., Inui, M., Takai, T., Shibuya, A., Saijo, S., Iwakura, Y., Ohno, N., Koseki, H., Yoshida, H., Penninger, J.M. and Saito, T.:
"The adaptor protein CARD9 is essential for the activation of myeloid cells through ITAM-associated and Toll-like receptors."
Nat. Immunol. 8: 619-629, 2007. - Suzuki, N., Suzuki, S., Millar, D. G., Unno, M., Hara, H., Calzascia, T., Yamasaki, S., Yokosuka, T., Chen, N-J., Elford, A. R., Suzuki, J-I., Takeuchi, A., Mirtsos, C., Bouchard, D., Ohashi, P. S., Yeh, W-C. and Saito, T.:
"A critical role for the innate immune signaling molecule IRAK-4 in T cell activation."
Science 311:1927-1932, 2006. - Yamasaki, S. Ishikawa, E., Sakuma, M., Ogata, K., Sakata-Sogawa, K., Hiroshima, M., Wiest, D.L., Tokunaga, M. and Saito, T.:
"Mechanistic basis of pre-T cell receptor-mediated autonomous signaling critical for thymocyte development."
Nat Immunol. 7: 67-75, 2006. - Yokosuka, T. Sakata-Sogawa, K., Kobayashi, W., Hiroshima, M., Hashimoto-Tane, A., Tokunaga, M., Dustin, M.L. and Saito, T.:
"Newly generated T cell receptor microclusters initiate and sustain T cell activation by recruitment of Zap 70 and SLP-76."
Nat Immunol. 6: 1253-1262, 2005.
Principal Investigator
- Takashi SAITO
- Group Director
Members
- Tadashi YOKOSUKA
- Takayuki IMANISHI
- Reiko ONISHI
- Yasuo SHIKAMOTO
- Arata TAKEUCHI
- Akiko TANE
- Shinichi TSUKUMO
- Mohamed El Sherif Gadelhaq GADELHAQ BADR
- Yuya ANAI
- Hanae FUJIMOTO
- Tomomi AOYAMA
- Midori UNNO
- Wakana KOBAYASHI
- Machie SAKUMA
- Yukiko HACHIMAN
- Hiroshi IKE
- Visiting Scientist
- Ikuo ISHIGE
- Visiting Scientist
- Masato TANAKA
- Visiting Scientist
- Sho YAMASAKI
- Visiting Scientist
- Yasutaka WAKABAYASHI
- Visiting Scientist

