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Methotrexate is excreted into the bile by canalicular multispecific organic anion transporter in rats.
Methotrexate [(+) amethopterin, L-MTX] has two carboxyl groups in its structure and is eliminated mainly by excretion into urine and bile. To investigate the biliary excretion mechanism of L-MTX, we… Expand
Smad5 and DPC4 Are Key Molecules in Mediating BMP-2-induced Osteoblastic Differentiation of the Pluripotent Mesenchymal Precursor Cell Line C2C12*
- R. Nishimura, Y. Kato, D. Chen, S. Harris, G. Mundy, T. Yoneda
- Biology, Medicine
- The Journal of Biological Chemistry
- 23 January 1998
Since the bone morphogenetic proteins (BMPs) are members of the transforming growth factor-β (TGF-β) superfamily that induce the differentiation of mesenchymal precursor cells into the osteogenic… Expand
Induction of 103-kDa gelatinase/type IV collagenase by acidic culture conditions in mouse metastatic melanoma cell lines.
- Y. Kato, Y. Nakayama, M. Umeda, K. Miyazaki
- Medicine, Biology
- The Journal of biological chemistry
- 5 June 1992
Gelatinases/type IV collagenases have been shown to be involved in tumor invasion and metastasis. In this study, we examined the effect of culture medium pH on the secretion of the gelatinases from… Expand
Establishment of a novel human megakaryoblastic leukemia cell line, MEG-01, with positive Philadelphia chromosome.
A megakaryoblastic cell line, designated MEG-01, was established from the bone marrow of a patient with blast crisis of Philadelphia (Ph1) chromosome-positive chronic myelogenous leukemia. MEG-01… Expand
Multiplicity of biliary excretion mechanisms for irinotecan, CPT-11, and its metabolites in rats.
We have reported previously that a canalicular multispecific organic anion transporter (cMOAT) is responsible for the biliary excretion of carboxylate forms of irinotecan,… Expand
Characterization of a cartilage-derived 66-kDa protein (RGD-CAP/beta ig-h3) that binds to collagen.
- K. Hashimoto, M. Noshiro, +11 authors Y. Kato
- Biology, Medicine
- Biochimica et biophysica acta
- 1 March 1997
A 66-kDa collagen fiber-associated protein (RGD-CAP) was isolated from a fiber-rich fraction of pig cartilage by ultrafiltration and collagen-affinity chromatography. Amino acid sequencing and cDNA… Expand
Biliary excretion mechanism of CPT-11 and its metabolites in humans: involvement of primary active transporters.
After administration of CTP-11, a camptothecin derivative exhibiting a wide spectrum of antitumor activity, dose-limiting gastrointestinal toxicity with great interpatient variability is observed.… Expand
Dec1 and Dec2 are regulators of the mammalian molecular clock
The circadian rhythms in mammals are regulated by a pacemaker located in the suprachiasmatic nucleus of the hypothalamus1,2. Four clock-gene families have been found to be involved in a… Expand
Possible involvement of P-glycoprotein in biliary excretion of CPT-11 in rats.
- X. Chu, Y. Kato, Y. Sugiyama
- Chemistry, Medicine
- Drug metabolism and disposition: the biological…
- 1 April 1999
In our previous work, we found that the biliary excretion of the carboxylate form of irinotecan, CPT-11, on rat bile canalicular membrane consists of two components, the low-affinity one being… Expand
Effect of brefeldin A and lysosomotropic reagents on intracellular trafficking of epidermal growth factor and transferrin in Madin-Darby canine kidney epithelial cells.
- Y. Shitara, Y. Kato, Y. Sugiyama
- Biology, Medicine
- Journal of controlled release : official journal…
- 30 October 1998
To regulate intracellular sorting of epidermal growth factor (EGF) or transferrin (Tf), the effect of brefeldin A (BFA) or lysosomotropic reagents was investigated. To examine the effect of them on… Expand