|2-DE Analysis of Breast Cancer Cell Lines MDA-1833 and MDA-4175 with Distinct Metastatic Organ-Specific Potentials and Comparison with Parental Cell Line MDA-MB-231|
Irena Selicharová, Miloslav Šanda, Lucia Svitekova, Sujata Suraswat Ohri, Aruna Vashishta, Martin Fusek and Václav Vetvicka
Breast cancer has diverse metastatic behavior. Subpopulations of cells with enhanced metastatic abilities either to bone (1833) or to lung (4175) have been isolated by the group of J. Massague by in vivo selection of MDA-MB-231 cells. We performed the 2-DE analysis of the cell lines. We have found and identified 11 differentially expressed protein spots.
|Detection of Protein-Protein Interactions of the Corepressor Alien |
Robert Kob, Niko Escher, Juliane Kelm, Aria Baniahmad, Ferdinand von Eggeling and Christian Melle
The correpressor Alien is shown to interact with several proteins involved in regulation of transcription, DNA repair and cell cycle. Furthermore we found E2F1 transcription to be downregulated by Alien overexpression.
|Whole Body Endogenous Nitric Oxide Production in Patients with Decompensated Liver Disease|
Demoncheaux E., Elphick D.A., Dürner M.B., Higgins G.E., Crowther D., Williams E.J., Higenbottam T.W and Gleeson D
Increased nitric oxide (NO) production has been implicated in the pathogenesis of the hyperdynamic circulation found in patients with advanced liver disease. There were no differences between patients with liver disease and controls with regard whole body NO production. Our results, in a well characterised set of patients, argue against greater basal NOS-dependent whole body NO production in patients with decompensated liver disease.
|MS-Xelerator™: Advanced Algorithms for LC/MS Data Processing Applied to Biomarker Discovery, Differential Analysis and Quantitative Proteomics|
LC-MS based proteomic experiments are used to compare complex biological samples across multiple conditions. Fast, powerful computational tools are needed to explore and detect differences in the areas of Expression Proteomics and Biomarker Discovery. In general, specialized steps are necessary to solve these difficult problems (binning, alignment & normalization, peak picking, relative quantitation, etc.). MS-Xelerator is a collection of software tools dedicated to all of the above tasks.
|High Resolution Separation of Tryptic Digests of Arabidopsis Thaliana Chloroplast|
Vilem Guryca, Christophe Masselon, Sabine Brugiere, Sylvie Kieffer-Jaquinod, Michel Jaquinod, Magali Court and Jerome Garin
In the context of determination of the proteome of Arabidopsis Thaliana chloroplast we will present number of identified peptides and its relationship to the peak capacity of the chromatographic systems based on packed or monolithic columns.
|Caveolin-1 Expression as a Possible Biomarker in Pancreatic Cancer Diagnosis|
C. Tanase, E. Raducan, L. Albulescu, E. Codorean, M.I. Nicolescu, D.I. Popescu, M.L. Cruceru and A.C. Popa
Caveolin1 (Cav-1) function either as a tumor supressor or as a promoter of metastasis. Overexpresion of cav-1 was correlated with: tumoral grading, proliferration markers (Ki67, p53), serum tumor markers (CEA, CA19.9) and angiogenic markers (VEGF, bFGF).
|PNA Synthesis by Novel Amide Formation |
Ravi Vinayak*, Hyunil Lee, Sung Kee Kim, Jae Hoon Jeon, Jong Chan Lim, Hoon Choi, Yeohong Yoon and Hey Yeon Kim
Benzothiazole-2-sulfonyl (Bts) has been reported as an amine-protecting group of amino acid, and the stability of sulfonamide and the mild deprotection conditions are attractive properties for a protecting group. Due to the strong electron-withdrawing effect of the sulfonyl group, the acyl group of acylsulfonamideis easily attacked by nucleophiles after alkylation which was applied in the safety-catch strategy or the synthesis of a peptide thioester for native chemical ligation of the peptide.
|A Sandwich-Injection Method for Microchip Electrophoresis|
Gang Li, Gui-Sheng Zhuang, Hai-Bin Zhu, Hui-Qing Jin and Jian-Long Zhao
We present a sandwich-injection method for controlling discrete sample injection in µ-CE. This method involves four accessory arm channels in which symmetrical potentials are loaded to form a unique parallel electric field distribution to confine the spreading of sample plugs and prevent sample leakage. The virtues of the novel injection technique were demonstrated with numerical models and experiments.
|Worm Annotation in UniProtKB/Swiss-Prot|
Duncan Legge and the UniProt Consortium
UniProt (Universal Protein Resource) provides a central resource on protein sequences and functional annotation. The UniProt Consortium is comprised of the European Bioinformatics Institute (EBI), the Swiss Institute of Bioinformatics (SIB) and the Protein Information Resource (PIR). The UniProt Knowledgebase (UniProtKB) contains the manually annotated UniProtKB/Swiss-Prot section and the automatically annotated UniProtKB/TrEMBL section.