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- Publications
- Influence
Differential Regulation of Th1 and Th2 Functions of NKT Cells by CD28 and CD40 Costimulatory Pathways1
- Y. Hayakawa, K. Takeda, H. Yagita, L. Van Kaer, I. Saiki, K. Okumura
- Biology, Medicine
- The Journal of Immunology
- 15 May 2001
Vα14 NKT cells produce large amounts of IFN-γ and IL-4 upon recognition of their specific ligand α-galactosylceramide (α-GalCer) by their invariant TCR. We show here that NKT cells constitutively… Expand
Role of CX3CL1/Fractalkine in Osteoclast Differentiation and Bone Resorption1
- K. Koizumi, Y. Saitoh, +10 authors I. Saiki
- Chemistry, Medicine
- The Journal of Immunology
- 15 December 2009
The recruitment of osteoclast precursors toward osteoblasts and subsequent cell-cell interactions are critical for osteoclast differentiation. Chemokines are known to regulate cell migration and… Expand
Role of the CXCL12/CXCR4 axis in peritoneal carcinomatosis of gastric cancer.
- K. Yasumoto, K. Koizumi, +9 authors I. Saiki
- Medicine
- Cancer research
- 15 February 2006
Peritoneal carcinomatosis is a frequent cause of death in patients with advanced gastric carcinoma. Because chemokines are now considered to play an important role in the metastasis of various… Expand
Inhibitory effect of tumor metastasis in mice by saponins, ginsenoside-Rb2, 20(R)- and 20(S)-ginsenoside-Rg3, of red ginseng.
- M. Mochizuki, Y. C. Yoo, +5 authors I. Azuma
- Medicine
- Biological & pharmaceutical bulletin
- 15 September 1995
We examined the inhibitory effect of two saponin preparations from Red ginseng, 20(R)- and 20(S)-ginsenoside-Rg3, in comparison with that of ginsenoside-Rb2, on lung metastasis produced by two highly… Expand
Crucial roles of RSK in cell motility by catalysing serine phosphorylation of EphA2
- Y. Zhou, Naoki Yamada, +8 authors H. Sakurai
- Biology, Medicine
- Nature communications
- 9 July 2015
Crosstalk between inflammatory signalling pathways and receptor tyrosine kinases has been revealed as an indicator of cancer malignant progression. In the present study, we focus on EphA2 receptor… Expand
Tumor necrosis factor-alpha-induced IKK phosphorylation of NF-kappaB p65 on serine 536 is mediated through the TRAF2, TRAF5, and TAK1 signaling pathway.
- H. Sakurai, S. Suzuki, +5 authors I. Saiki
- Medicine
- The Journal of biological chemistry
- 2003
The activation of NF-kappaB has been shown to be regulated by multiple phosphorylations of IkappaBs and the NF-kappaB p65 subunit. Here, we characterized the intracellular signaling pathway leading… Expand
Role of aminopeptidase N (CD13) in tumor‐cell invasion and extracellular matrix degradation
- I. Saiki, J. Yoneda, +4 authors T. Tsuruo
- Biology, Medicine
- International journal of cancer
- 22 April 1993
We have investigated the effect of monoclonal antibodies (MAbs) specific for aminopeptidase N/CD13 on the invasion of human metastatic tumor cells into reconstituted basement membrane (Matrigel). The… Expand
CD44 variants but not CD44s cooperate with beta1-containing integrins to permit cells to bind to osteopontin independently of arginine-glycine-aspartic acid, thereby stimulating cell motility and…
- Y. Katagiri, J. Sleeman, +10 authors T. Uede
- Biology, Medicine
- Cancer research
- 1999
The expression of osteopontin (OPN), CD44 variants, and integrins has been correlated with tumorigenesis and metastasis. Here we show that these proteins cooperate to enhance cell motility. First, we… Expand
Critical Roles of Threonine 187 Phosphorylation in Cellular Stress-induced Rapid and Transient Activation of Transforming Growth Factor-β-activated Kinase 1 (TAK1) in a Signaling Complex Containing…
- Pattama Singhirunnusorn, S. Suzuki, N. Kawasaki, I. Saiki, H. Sakurai
- Medicine, Biology
- Journal of Biological Chemistry
- 25 February 2005
Transforming growth factor-β-activated kinase 1 (TAK1) mitogen-activated protein kinase kinase kinase has been shown to be activated by cellular stresses including tumor necrosis factor-α (TNF-α).… Expand
Chemokine receptors in cancer metastasis and cancer cell‐derived chemokines in host immune response
- K. Koizumi, Shozo Hojo, T. Akashi, K. Yasumoto, I. Saiki
- Biology, Medicine
- Cancer science
- 1 November 2007
The chemotactic cytokines called chemokines are a superfamily of small secreted cytokines that were initially characterized through their ability to prompt the migration of leukocytes. Attention has… Expand