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Proteomic profiling of the silkworm skeletal muscle proteins during larval-pupal metamorphosis 总被引:1,自引:0,他引:1
Zhang P Aso Y Jikuya H Kusakabe T Lee JM Kawaguchi Y Yamamoto K Banno Y Fujii H 《Journal of proteome research》2007,6(6):2295-2303
The silkworm is a typical holometabolous insect going through drastic morphological changes upon metamorphosis from larvae to pupae. Comprehensive studies focusing on the changes help elucidate understanding of a biogenic mechanism. Here, we report the initial profile of the intersegmental muscle (ISM) proteins of the silkworm during larval-pupal metamorphosis. In total, 258 protein spots were resolved by two-dimensional gel electrophoresis (2-DE). Fifty-seven larval proteins were identified, where 3 proteins were exclusively detected in larval samples. Fifty-four other proteins were common in pupal samples. Of these, 12 proteins belonging to the contractile apparatus, metabolism, regulation, and signal transduction were altered in their contents during the metamorphosis from larvae to pupae. Three pupa-defective proteins were identified as isoforms of troponin I, followed by an immunoblotting validation. This data will be helpful in understanding the biochemistry of an insect ISM. 相似文献
23.
Miyata Seiko Noda Akiko Iwamoto Kunihiro Kawano Naoko Banno Masahiro Tsuruta Yoshiyuki Noda Yukihiro Ozaki Norio 《Sleep and biological rhythms》2015,13(4):387-394
Sleep and Biological Rhythms - Chronic sleep restriction adversely effects cognitive performance and mood, resulting in accidents and economic loss. We examined the effects of three nights of sleep... 相似文献
24.
Miyamoto Y Banno Y Yamashita T Fujimoto T Oi S Moritoh Y Asakawa T Kataoka O Takeuchi K Suzuki N Ikedo K Kosaka T Tsubotani S Tani A Funami M Amano M Yamamoto Y Aertgeerts K Yano J Maezaki H 《Bioorganic & medicinal chemistry》2011,19(1):172-185
We have previously discovered nicotinic acid derivative 1 as a structurally novel dipeptidyl peptidase IV (DPP-4) inhibitor. In this study, we obtained the X-ray co-crystal structure between nicotinic acid derivative 1 and DPP-4. From these X-ray co-crystallography results, to achieve more potent inhibitory activity, we targeted Arg125 as a potential amino acid residue because it was located near the pyridine core, and some known DPP-4 inhibitors were reported to interact with this residue. We hypothesized that the guanidino group of Arg125 could interact with two hydrogen-bond acceptors in a bidentate manner. Therefore, we designed a series of 3-pyridylacetamide derivatives possessing an additional hydrogen-bond acceptor that could have the desired bidentate interaction with Arg125. We discovered the dihydrochloride of 1-{[5-(aminomethyl)-2-methyl-4-(4-methylphenyl)-6-(2-methylpropyl)pyridin-3-yl]acetyl}-l-prolinamide (13j) to be a potent and selective DPP-4 inhibitor that could interact with the guanidino group of Arg125 in a unique bidentate manner. 相似文献
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Characterization of the carotenoid-binding protein of the Y-gene dominant mutants of Bombyx mori 总被引:3,自引:0,他引:3
Tsuchida K Jouni ZE Gardetto J Kobayashi Y Tabunoki H Azuma M Sugiyama H Takada N Maekawa H Banno Y Fujii H Iwano H Wells MA 《Journal of insect physiology》2004,50(4):363-372
Carotenoids play important and diverse roles in insects. Recently, we purified and partially characterized a carotenoid-binding protein (CBP) from the wild type of Bombyx mori. In this report, we utilized immunoblotting, ELISA and immunocytochemistry to further characterize and localize the expression of CBP in the larval midgut and silk gland obtained from the wild type and four naturally occurring mutants linked to carotenoids transport. CBP was expressed throughout the 5th stadium, with highest expressions on days 4-5 in the silk gland and days 3-5 in the midgut. Immunoblotting analyses demonstrated the presence of CBP along the middle part of the midgut. Microscopic immunocytochemistry demonstrated that the 33 kDa CBP was uniformly expressed along the brush border of columnar cells in the epithelium of the midgut typifying its function in aiding absorption of dietary carotenoids. Similarly, CBP was highly expressed along the distal membrane of the middle part of the silk gland demonstrating its function in uptake of carotenoids from lipophorin. When the middle silk glands and midguts of the four mutants were incubated with rabbit anti-CBP antibody, only proteins of the Y-gene dominant mutants cross reacted with the antibody further accentuating the hypothesis that the CBP is a Y-gene dependent protein. 相似文献
27.
Proteome analysis of silk gland proteins from the silkworm, Bombyx mori 总被引:10,自引:0,他引:10
Zhang P Aso Y Yamamoto K Banno Y Wang Y Tsuchida K Kawaguchi Y Fujii H 《Proteomics》2006,6(8):2586-2599
The silk gland of Bombyx mori is an organ specialized for the synthesis and secretion of silk proteins. We report here the resolution of silk gland proteins by 2-DE and the identification of many of those proteins. This was accomplished by dissecting the glands into several sections, with each exhibiting more than 400 protein spots by 2-DE, of which 100 spots were excised and characterized by in-gel digestion followed by PMF. Ninety-three proteins were tentatively identified. These were then categorized into groups involved in silk protein secretion, transport, lipid metabolism, defense, etc. Western blotting of a 2-DE gel using an antibody of the carotenoid binding protein confirmed the presence of this protein in the silk gland. Proteins including fibroin L-chain and P25 were found as multiple isoforms, some of which contained differential amounts of phosphate residues as analyzed by on-probe dephosphorylation. The current analysis contributes to our understanding of proteins expressed by the silk gland not only of the model lepidopteran B. mori, but also to proteins from other silk-producing insects such as Philosamia cynthia ricini. 相似文献
28.
Takashi Sakudoh Tetsuya Iizuka Junko Narukawa Hideki Sezutsu Isao Kobayashi Seigo Kuwazaki Yutaka Banno Akitoshi Kitamura Hiromu Sugiyama Naoko Takada Hirofumi Fujimoto Keiko Kadono-Okuda Kazuei Mita Toshiki Tamura Kimiko Yamamoto Kozo Tsuchida 《The Journal of biological chemistry》2010,285(10):7739-7751
The transport pathway of specific dietary carotenoids from the midgut lumen to the silk gland in the silkworm, Bombyx mori, is a model system for selective carotenoid transport because several genetic mutants with defects in parts of this pathway have been identified that manifest altered cocoon pigmentation. In the wild-type silkworm, which has both genes, Yellow blood (Y) and Yellow cocoon (C), lutein is transferred selectively from the hemolymph lipoprotein to the silk gland cells where it is accumulated into the cocoon. The Y gene encodes an intracellular carotenoid-binding protein (CBP) containing a lipid-binding domain known as the steroidogenic acute regulatory protein-related lipid transfer domain. Positional cloning and transgenic rescue experiments revealed that the C gene encodes Cameo2, a transmembrane protein gene belonging to the CD36 family genes, some of which, such as the mammalian SR-BI and the fruit fly ninaD, are reported as lipoprotein receptors or implicated in carotenoid transport for visual system. In C mutant larvae, Cameo2 expression was strongly repressed in the silk gland in a specific manner, resulting in colorless silk glands and white cocoons. The developmental profile of Cameo2 expression, CBP expression, and lutein pigmentation in the silk gland of the yellow cocoon strain were correlated. We hypothesize that selective delivery of lutein to specific tissue requires the combination of two components: 1) CBP as a carotenoid transporter in cytosol and 2) Cameo2 as a transmembrane receptor on the surface of the cells. 相似文献
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30.
Mu-calpain is involved in the regulation of TNF-alpha-induced matrix metalloproteinase-3 release in a rheumatoid synovial cell line 总被引:1,自引:0,他引:1
Morita M Banno Y Dohjima T Nozawa S Fushimi K Fan DG Ohno T Miyazawa K Liu N Shimizu K 《Biochemical and biophysical research communications》2006,343(3):937-942
Calpain is secreted by intra-articular synovial cells and degrades the main components of cartilage matrix proteins, proteoglycan, and collagen, causing cartilage destruction. Matrix metalloproteinase-3 (MMP-3) has also been detected in synovial fluid and serum, and is involved in the development and progression of rheumatoid arthritis by degradation of the extracellular matrix and cartilage destruction. To investigate the relationship between calpain and MMP-3 in rheumatic inflammation, we utilized the rheumatic synovial cell line, MH7A. Tumor necrosis factor (TNF-alpha) stimulation-induced increased expression of mu-calpain, m-calpain, and MMP-3 in these cells, as well as the release of calpain and MMP-3 into the culture medium. The calpain inhibitors, ALLN (calpain inhibitor I) and calpeptin, did not affect the intracellular expression of MMP-3, but reduced the secretion of MMP-3 in a concentration-dependent manner. Down-regulation of mu- but not m-calpain by small interfering RNAs abolished TNF-alpha-induced MMP-3 release from the synovial cells. These findings suggest that calpain, particularly mu-calpain, regulates MMP-3 release by rheumatic synovial cells, in addition to exerting its own degradative action on cartilage. 相似文献