We also compared the transcriptional level of several genes from

We also compared the transcriptional level of several genes from the real-time RT PCR result and Ralimetinib purchase the microarray data, and found a positive correlation between the two techniques

(Additional file 1). The binding of AirR to the target genes We cloned and purified a His-tagged AirR to perform gel shift assays. DNA probes containing the putative promoters of several target genes were amplified. A clearly shifted band of DNA was visible after incubation of AirR with DNA probes containing the cap promoter (Figure 4a). The intensity of the shifted band increased as the amount of AirR was higher. This shifted band disappeared in the presence of an approximately 50-fold excess of unlabeled cap promoter DNA but not in the presence of 50-fold excess of an unlabeled coding sequence DNA of pta. These data suggest that AirR can specifically bind to the cap promoter region. Figure 4 Electrophoretic mobility shift assay for AirR. The first lane was the free DNA probe (2 nM); the second to fourth lanes were the DNA probe with increasing

amounts of AirR (0.3, 0.6, and 1.2 μM); the fifth lane was the same as the fourth lane but with the addition of a 50-fold excess of unlabeled probes as specific competitors (SCs). The sixth lane was as the same H 89 molecular weight as the fourth lane but with the addition of a 50-fold excess of unlabeled pta ORF region fragments as non-specific competitor. (NC). (a) EMSA with cap promoter; (b) ddl promoter; (c) pbp1 promoter; (d) lytM promoter. Similar assays were performed

using DNA fragments of the promoter region of ddl and pbp1, two other genes that encode cell wall biosynthesis-related proteins. Similar promoter DNA band shift patterns were observed with the ddl learn more and pbp1 promoters (Figure 4b,c), suggesting that AirR can bind to these promoters. The promoter region of lytM was amplified and used as a gel shift probe. The result selleck chemicals llc indicated that AirR can specifically bind to the lytM promoter (Figure 4d). To test the effect of phosphorylation of AirR, same amount of AirR or AirR-P obtained from both lithium potassium acetyl phosphate and AirS were used for EMSA of cap promoter. The shift band from different proteins did not show obvious difference (Additional file 2), which is consistent with the observation by another group [23]. Discussion Our study shows a direct connection between cell wall metabolism and AirSR. More than 20 genes that are related to cell wall metabolism were down-regulated in the airSR mutant, as shown by microarray analysis. Real-time RT PCR experiments confirmed the transcript level changes of several genes (cap5B, cap5D, tagA, SAOUHSC_00953, pbp1, murD, ftsQ, and ddl). Real-time RT PCR indicated that the transcription of a major autolysin, LytM, was down-regulated in the airSR mutant. This result is consistent with the observation of a decreased autolysis rates induced by Triton X-100 in the airSR mutant.

(PDF 35 KB) Additional File 3: Table S5 Oligonucleotides for PCR

(PDF 35 KB) Additional File 3: Table S5. Oligonucleotides for PCR analysis. (DOC 36 KB) Additional File 4: Figure S3.

Maps of the plasmids obtained by the MS/GW system used for the deletion of the ech gene. A) pDEST/ech_Hyg-GAPDH and B) pDEST/ech_Neo-GAPDH. (TIFF 2 MB) Additional File 5: Table S1. Oligonucleotides for generation of knockout constructs based on the conventional strategy. (DOC 31 KB) Additional File 6: Table S2. Oligonucleotides for generation of knockout constructs based on the MS/GW strategy. (DOC 52 KB) Additional PD-0332991 order File 7: Table S3. Oligonucleotides for one-step-PCR. (DOC 49 KB) Additional File 8: Table S4. Oligonucleotides for probe generation of Southern blot analysis. (DOC 34 KB) References 1. Barrett MP, Burchmore RJ, Stich A, Lazzari JO, Frasch AC, Cazzulo JJ, Krishna S: The trypanosomiases. Lancet 2003,362(9394):1469–1480.CrossRefPubMed 2. Control of Chagas disease World Health Organ Tech Rep Ser 2002, 905:i-iv. 1–109, back cover 3. TDR/PAHO/WHO Scientific Working Group Report: Reporte sobre la enfermedad de Chagas. [http://​www.​who.​int/​tdr/​svc/​publications/​tdr-research-publications/​reporte-enfermedad-chagas] www.selleckchem.com/products/z-vad-fmk.html 2007. 4. Tyler KM, Engman DM: The life cycle of Trypanosoma

cruzi revisited. Int J Parasitol 2001,31(5–6):472–481.CrossRefPubMed 5. El-Sayed NM, Myler PJ, Bartholomeu DC, Nilsson D, Aggarwal G, Tran A-N, Ghedin E, Worthey EA, Delcher AL, Blandin G, et al.: The Genome Sequence of Trypanosoma

Rho cruzi, Etiologic Agent of Chagas Disease. Science 2005,309(5733):409–415.CrossRefPubMed 6. Obado SO, Taylor MC, Wilkinson SR, Bromley EV, Kelly JM: Functional mapping of a trypanosome centromere by chromosome fragmentation identifies a 16-kb GC-rich transcriptional “”HKI-272 order strand-switch”" domain as a major feature. Genome Res 2005,15(1):36–43.CrossRefPubMed 7. Machado CA, Ayala FJ: Nucleotide sequences provide evidence of genetic exchange among distantly related lineages of Trypanosoma cruzi. Proc Natl Acad Sci U S A 2001,98(13):7396–7401.CrossRefPubMed 8. Cooper R, de Jesus AR, Cross GA: Deletion of an immunodominant Trypanosoma cruzi surface glycoprotein disrupts flagellum-cell adhesion. J Cell Biol 1993,122(1):149–156.CrossRefPubMed 9. Ajioka J, Swindle J: The calmodulin-ubiquitin (CUB) genes of Trypanosoma cruzi are essential for parasite viability. Mol Biochem Parasitol 1996,78(1–2):217–225.CrossRefPubMed 10. Caler EV, Vaena de Avalos S, Haynes PA, Andrews NW, Burleigh BA: Oligopeptidase B-dependent signaling mediates host cell invasion by Trypanosoma cruzi. Embo J 1998,17(17):4975–4986.CrossRefPubMed 11. Allaoui A, Francois C, Zemzoumi K, Guilvard E, Ouaissi A: Intracellular growth and metacyclogenesis defects in Trypanosoma cruzi carrying a targeted deletion of a Tc52 protein-encoding allele. Mol Microbiol 1999,32(6):1273–1286.CrossRefPubMed 12.

Jeor equation x 1 2 activity factor – 500 kcals) for METABO was 1

Jeor equation x 1.2 activity factor – 500 kcals) for METABO was 1955 kcal, 195 g carbohydrates,

147 g protein, and 87 g of fat. The target intake for placebo was 1907 kcal, 191 g carbohydrates, 143 g of protein, and 85 g of fat. No differences were observed in energy consumption, or in absolute BI 10773 in vivo or relative amounts of dietary carbohydrate, protein or fat between METABO and placebo. Table 3 Dietary intake of METABO and placebo groups from week 0 through week 8 using 3-day food records Variable METABO Placebo P n = 27 n = 18 Value1 (Baseline) Pre-intervention Mid point End of study (Baseline) Pre-intervention Mid point End of study     (Week 0) (Week 4) (Week 8) (Week 0) (Week 4) (Week 8)   Energy (kcal/d) 1831 ± 491 1889 ± 428 1912 ± 423 1764 ± 482 1913 ± 432

1917 ± 479 0.48, 0.41 Carbohydrate (g/d) 206 ± 78 188 ± 58 188 ± 57 215 ± 94 191 ± 58 202 ± 61 0.94, 0.80 Carbohydrate (%) 46 ± 14 39 ± 6 39 ± 5 48 ± 15 40 ± 6 42 ± 5 0.70, 0.90 Fat (g/d) 54 ± 20 56 ± 17 AZD3965 57 ± 15 52 ± 23 57 ± 13 56 ± 13 0.87, 0.85 Fat (%) 26 ± 7 27 ± 4 27 ± 4 27 ± 10 27 ± 4 27 ± 4 0.98, 0.79 Protein (g/d) 130 ± 66 158 ± 43 162 ± 47 110 ± 50 161 ± 47 150 ± 50 0.77, 0.66 Protein (%) 28 ± 12 34 ± 8 34 ± 7 26 ± 13 34 ± 7 31 ± 6 0.52, 0.99 Values are mean ± SD. 1P values are for the differences between the two groups, METABO versus placebo at week 4 and week 8, respectively. No significant between group

differences at week 4 or week 8 time points were noted using ANCOVA (where the week 0 time points were used as the covariate). Target dietary intake was provided to each GSK2126458 subject after baseline 3-day Phosphoprotein phosphatase food records (pre-intervention) using the Mifflin-St. Jeor equation plus an activity factor of 1.2 minus 500 kcal/day, with a macronutrient ratio of 40% carbohydrate, 30% fat and 30% protein. Metabolic variables The effects of the diet + exercise + supplement regimen on metabolic characteristics are shown in Table  4. For all the blood lipids analyzed, cholesterol, HDL, LDL, cholesterol/HDL ratio and TAG, baseline levels in both groups were within normal ranges and did not significantly differ between them. Blood glucose increased slightly in both groups from week 0 to week 8 but these differences were not statistically significant (p < 0.60). Table 4 Metabolic variables of METABO and placebo groups from week 0 through week 8 Blood lipid   METABO   Placebo P     n = 27   n = 18 Value1   Baseline Mid point End of study % Baseline Mid point End of study %     (Week 0) (Week 4) (Week 8) Change (Week 0) (Week 4) (Week 8) Change   Cholesterol, (mg/dL) 178.33 ± 26.49 NP 173.30 ± 30.25 -2.8 175.78 ± 31.45 NP 176.50 ± 31.14 0.4 0.3 HDL (mg/dL) 48.44 ± 12.47 NP 48.56 ± 15.26 0.2 50.28 ± 10.86 NP 48.94 ± 12.06 -2.7 0.49 LDL (mg/dL) 103.96 ± 26.04 NP 103.00 ± 30.92 -0.9 100.

Data are means ± SD of 3 independent experiments *P < 0 05; Δlyt

Data are means ± SD of 3 independent experiments. *P < 0.05; ΔlytSR vs. WT; ΔlytSR(pNS-lytSR) vs. ΔlytSR(pNS-lytSR). We further examined cell viability inside biofilm of 1457ΔlytSR and the wild-type GSK872 price strain by using a fluorescence-based Live/Dead staining method. With an appropriate mixture (1:1, m/m) of the SYTO 9 (green) and PI (red), bacteria with intact cell membranes were stained fluorescent green, whereas bacteria with damaged membranes were stained fluorescent red. Significantly decreased level of red fluorescence was observed inside biofilm of 1457ΔlytSR, comparing with that inside biofilm of the wild-type

strain, as shown in Figure 8. Complementation of 1457ΔlytSR with plasmid pNS-lytSR restored the level of red fluorescence to that observed inside biofilm of the wild-type strain (Figure 8C, D). A quantitative method based on measuring the red/green fluorescence ratio Selleck Torin 1 was CYC202 chemical structure carried out to determine the relative cell viability inside biofilm. The percentage of dead cells inside 24-hour-old biofilms of 1457ΔlytSR

and the wild-type strain were 6% and 15% respectively, as shown in Figure 9. Inside the biofilm of lytSR complementation strain, the percentage of dead cells was restored nearly to the wild-type level. Figure 8 Confocal photomicrographs of 24-hour-old biofilms. Biofilms containing S. epidermidis 1457 strains wild-type (A), ΔlytSR (B), ΔlytSR(pNS-lytSR) (C) and ΔlytSR(pNS) (D) were visualized by using the

live/dead viability stain (SYTO9/PI). Green fluorescent cells are viable, whereas red fluorescent cells have a compromised cell membrane, as indicative of dead cells. Scale bars = 5 μm. The result is a stack of images at approximately 0.3 μm depth increments and represents one of the three experiments. Figure 9 Quantitative analysis of bacteria Paclitaxel solubility dmso cell death in 24-hour-old biofilms. Live/dead stained biofilm cells were scraped from the dish and dispersed by pipetting. The integrated intensities of the green (535 nm) and red (625 nm) emission of suspensions excited at 485 nm were measured and the green/red fluorescence ratios (RatioR/G) were calculated. The percentage of dead cells inside biofilm was determined by comparison to the standard curve of RatioR/G versus percentage of dead cells. Data are means ± SEM of 3 independent experiments. *P < 0.05; ΔlytSR vs. WT; ΔlytSR(pNS-lytSR) vs. ΔlytSR(pNS-lytSR). Transcriptional profiling of 1457ΔlytSR strain To investigate the regulatory role of LytSR, we used custom-made S. epidermidis GeneChips to perform a transcriptional profile analysis of the wild type and 1457ΔlytSR strains. Two criteria including 2-fold or greater change in expression level and P < 0.05 were employed to select the genes with significantly different expression. It was found that expression of 164 genes was affected by lytSR mutation, in which 123 were upregulated and 41 were downregulated.

This clearly shows that the assumption of no defects overestimate

This clearly shows that the assumption of no defects overestimates the thermal conductance of SiNW and thus understanding of the effects of defects is essential for the thermal transport of SiNW. Actually, the phonon-phonon scatterings due to anharmonic effects are not important for SiNWs with diameters smaller than 30 nm [3]. Then, for one of the simplest defects, we introduce a single vacancy. Markussen et al. have studied the effect of surface vacancy defects by taking sample average of SiNWs with randomly placed surface vacancies [16, 17]. Here we focus on the effect of a vacancy at different positions on the thermal conductance.

Figure 5 Thermal conductance INCB018424 ic50 and transmission coefficients of SiNW with defects. (top) Atomistic models of 〈100〉 SiNW with 2 nm in diameter with no defects (top-left), a surface S3I-201 clinical trial defect (top-middle), and a center defect (top-right). The wire is oriented LY3009104 datasheet along the perpendicular direction to the sheet. (bottom-left)

Temperature dependence of thermal conductance of SiNWs with no defects (black lines), a surface defect (blue lines), and a center defect (red lines), for various diameters of D=1.0 nm (solid lines), D=1.5 nm (dashed lines), and D=2.0 nm (dotted lines), respectively. (bottom-right) Transmission coefficients of the SiNWs with no defects (black lines), a surface defect (blue lines), and a center defect (red lines), respectively, for 1.0 nm in diameter. Digestive enzyme The bottom-left panel of Figure 5 shows the temperature dependence of the thermal conductance with no defects, with a surface defect, and with a center defect for three diameters D = 1.0, 1.5, and 2.0 nm. Since the phonon-phonon scatterings due to anharmonic effects are not taken into account here, the thermal conductance drop observed in the high temperature

regime in experiments [1] for a thick SiNW with a diameter larger than 30 nm is not reproduced and is different from the previous work [3]. As for the effects of vacancy defects on the thermal conductance, we can see that for all diameters of SiNWs and all temperature regions, the pristine wire has the highest thermal conductance, and the vacancy effects are more significant for a center defect than for a surface defect. It would be interesting to investigate why the SiNWs have different thermal conductances when defects are included at different positions. It looks like the effects of vacancy defects on the thermal conductance are not simple, since we cannot estimate the behaviors only from the density of vacancy defects. To understand the effects of vacancy defects, we have to take the calculated results of atomistic transmission functions into account. The bottom-right panel of Figure 5 shows the transmission coefficients ζ(ω) for the SiNWs with 1.

g-h) Mycobacterium tuberculosis (MTB)-infected B cells show membr

g-h) Mycobacterium tuberculosis (MTB)-infected B cells show membrane ruffling Alvocidib mouse (white arrow) and some bacilli bound to the cell (black arrows). i-k) S. typhimurium-infected B cells show filopodia (thin white arrows) and lamellipodia formation (wide white arrows). The white arrowheads depict

attached bacilli and a bacillus that is surrounded by forming lamellipodia. Cytoskeletal role: actin filaments To establish the role of the actin filaments on the mycobacterial internalisation, we performed confocal Idasanutlin chemical structure analyses. The actin filaments were stained with phalloidin-rhodamine and the bacteria were labelled with FITC. The uninfected cells presented a peripheral fluorescent label that sustained the spatial cell morphology (Figure 7a). The S. typhimurium-infected cells AZD2014 lost the regular peripheral fluorescent label. After 1 h of infection, the actin cytoskeletal rearrangements resulting in membrane ruffling were evident on the cell surface, and the attachment of the bacilli to these structures was observed (Figure 7b). After 3 h of infection, the cells exhibited long actin projections and actin re-distribution (Figure 7c). Additionally, some bacilli were found adhered to the actin organisations that resulted in the lamellipodia formation (Figure 7d). Furthermore, these changes were also observed in cells without

any adhered or internalised bacteria (Figure 7b). M. smegmatis infection caused actin rearrangements that could terminate in membrane ruffling, lamellipodia, and filopodia formation. Some cells also showed actin focal spots on the cell surface

fantofarone (Figures 8a, 8b and 8c). After 3 h of infection, long actin filaments, which are responsible for the formation of membrane filopodia, were present on the cell surface (Figure 8c). M. smegmatis infection-associated actin rearrangements were evident in all of the cells that were present in the preparation, although some cells did not present either adhered or internalised bacilli (Figures 8a, 8b and 8c). M. tuberculosis infection induced actin reorganisation that was responsible for membrane ruffling (Figures 8d, 8e and 8f), although fewer long actin filament formations were observed compared to the other infections (Figures 8d and 8f). Further, adhered and internalised bacilli were evident after 1 and 3 h of infection, respectively (Figures 8d and 8e). As with all of the other infections, all of the actin cytoskeletal changes were also evident in cells without any adhered or intracellular bacteria (Figure 8f). Figure 7 Confocal images of uninfected and S. typhimurium (ST)-infected B cells. The actin filaments were labelled with rhodamine-phalloidin and the bacteria were stained with fluorescein isothiocyanate (FITC). a) Uninfected cells present peripheral and homogeneous fluorescent staining. b) One h after infection, S.

X-axis: time (min); Y-axis: pH; log cfu are shown in colour (scal

FAK inhibitor X-axis: time (min); Y-axis: pH; log cfu are shown in colour (scale on the right of the graphs). Numbers in the bacterial names are the strain numbers in the FAM-database of ALP. Figure 3 Acid resistance of Bifidobacterium dentium, B. longum subsp. infantis and B. adolescentis. X-axis: time (min); Y-axis: pH; log cfu are shown in colour (scale on the right of the graphs). Numbers in the bacterial names are the strain numbers in the FAM-database of ALP. Figure 4 Acid resistance of Bifidobacterium breve and B. animalis subsp. lactis. X-axis: time (min); Y-axis:

pH; log cfu are shown in colour (scale on the right Selleck AZD0530 of the graphs). Numbers in the bacterial names are the strain numbers in the FAM-database of ALP. All the other tested Bifidobacterium strains (B. longum, B. breve, B. longum subsp. infantis and B. adolescentis) showed a similar but different pattern from B. animalis subsp. lactis (Figures 2, 3 and 4). They had a short survival time below pH 2.5 and survived in higher numbers above pH 3.5. With the aim of developing a method to simulate the GI in the bioreactor, a further test was done with one strain. To observe the influence of a food matrix, concentrated B. longum subsp. infantis was resuspended in skim milk Tanespimycin mouse before inoculating into acidic solutions.

As shown in the right-hand column of Figure 5, milk had a direct effect on the survival of the strain. Between pH 3.0 and 3.5 the bacteria survived for 120 min with a reduction of log 2. Below pH 3.0 the survival rate decreased to about log 5. The decrease in survival below pH 3.0 was rapid but regular over time. At pH 3.5 and above, the strain was resistant for at least 120 minutes. Figure 5 Comparison of acid resistance of Bifidobacterium longum subsp. infantis 14390 suspended in NaCl or skim milk. Left: Bifidobacteria resuspended in NaCl, right: Bifidobacteria resuspended in milk. X-axis: time (min); Y-axis: pH; log cfu

are shown in colour (scale on the right of the graphs). Numbers in the bacterial names are the strain numbers in the FAM-database of ALP. The left-hand column of why Figure 5 shows the same strain without added skim milk. At a pH above 3.5, there was no influence on the survival of the bacteria. However, below pH 3.5 the survival decreased depending on the duration of incubation. Between pH 3.0 and 3.5 the strain had already decreased by about log 5. After 30 min incubation, there was almost a linear decrease in survival with decreasing pH from 3.0 to 2.5. Simulation in the bioreactor Most systems described in the literature consist of several reaction vessels, e.g. the SHIME [6]. Other studies used immobilized cells with three reactors [25] or a dialysis system [8]. Based on the work of Sumeri et al. [9] and the collected data of the conditions in the intestinal passage we were able to limit the simulation to one vessel.

Jejunoileal diverticula are acquired false diverticula as they la

Jejunoileal diverticula are acquired false diverticula as they lack a true muscular wall and are thin and fragile. They are pulsion diverticula thought to be the result of intestinal dyskinesia leading to high intraluminal pressure. This results in herniation of mucosa and submucosa through the weakest site of the muscularis, which is where blood vessels penetrate into the bowel wall. This explains the common location of these diverticula at the mesenteric side of the bowel (Figure 1). Figure 1 Jejunal diverticula. Intraoperative photograph demonstrating multiple jejunal diverticula. Note Selleckchem OSI906 that the diverticula

arise at the mesenteric border. Malabsorption due to bacterial overgrowth is the major clinical manifestation of jejunoileal diverticula. Inflammation, perforation, and bleeding are far less common than in colon diverticula. The most common lesions leading to small bowel bleeding are tumors, arteriovenous malformations, and inflammatory bowel disease. Massive gastrointestinal haemorrhage from jejunal diverticula is extremely rare. However, it has been associated with high mortality rate caused by delayed diagnosis. We report a case of massive rectal haemorrhage from a jejunal diverticulum and discuss diagnostic evaluations and treatment options. Case presentation A 74-year-old female was admitted to this website our hospital

after an episode of massive rectal bleeding. Paclitaxel cell line Her past medical history was significant for hypertension and non-insulin dependent diabetes mellitus. In addition to anti-hypertensive and anti-diabetic drugs, she was taking aspirin 75 mg daily. There was no previous

history of gastrointestinal haemorrhage. The bleeding started at home some hours before admission. Upon arrival at the emergency room, she was awake and alert. On physical examination, the blood pressure was 130/80 mmHg, and the pulse was 60 beats/min. The abdomen was soft, non-distended and non-tender. On rectal examination, old blood on the glove was noticed. The initial haemoglobin level was 10.8 g/dL, trombocytes 186 x109/L, and C-reactive selleckchem protein <5 mg/L. The bleeding appeared to have ceased and the patient was considered haemodynamically stable. She had no more episodes of rectal bleeding during the night or the next morning and was discharged with an urgent appointment for outpatient workup with colonoscopy. The rectal bleeding recurred at home 10 hours after discharge. She had an episode of syncope and passed red blood per rectum. She was urgently brought back to the emergency department at our hospital. On physical examination she was pale and diaphoretic, with a blood pressure of 105/53 mmHg and a pulse rate of 105 beats/min. The abdomen was non-tender and fresh blood was observed in the rectum. The haemoglobin level was 8.4 g/dL, haematocrit value was 25%, and trombocytes 122 x109/L.


“Background Bacterial genomes appear as compact DNA masses


“Background Bacterial genomes appear as compact DNA masses, termed nucleoids, located centrally along both the length and width of the cells [1]. Nucleoids are highly organised structures within which each chromosome region occupies Sepantronium specific locations along the length of the cell and displays a distinct choreography during the cell cycle (for reviews: [2,

3]). In most bacteria, nucleoids contain a single chromosome replicated from a single origin. This defines two oppositely oriented replichores, each extending from the replication origin, oriC to the terminal (ter) region, oppositely located on circular chromosomes. This replicative organisation has important consequences for the global organisation and segregation of bacterial nucleoids. In E. coli, replication occurs around the cell centre (i.e., the mid-cell position) [4]. Segregation is concomitant with replication so that replicated loci are segregated from mid-cell to the equivalent positions in the future daughter cells (the quarter positions) following the order of their replication [5–9]. The oriC region (ori) is thus the first to segregate, and the ter region the last. In newborn

cells, loci of the ter region are located close to the new cell pole (polar positioning) and migrate towards the midcell during the replication Selleck VX770 process. Recent advances SP600125 mouse in bacterial cell cytology allow a general model of the Protein kinase N1 E. coli nucleoid structure to be established. The ori region, located towards midcell, migrates to the quarter positions after being duplicated. The two replichores occupy distinct locations on each side of ori with chromosome loci recapitulating the ori-ter genetic map along the cell length axis [7, 10, 11]. In this model, the ter region is inferred to contain a stretched

region linking the two nucleoid edges [12, 13]. This linking region is believed to be composed of a segment of 50 kb randomly taken within the 400 kb ter region. Notably, the ter region is the site of specific activities involved in segregation [14, 15]: in particular, it interacts with the MatP protein [16] and with the FtsK DNA translocase ([17]; our unpublished results). In addition to this replichore organisation, the E. coli nucleoid appears to be structured into macrodomains (MDs). MDs are 0.5 to 1 Mb regions inferred to be self-compacted and composed of loci having similar intracellular positioning and dynamics during segregation [6, 9, 18]. The E. coli chromosome contains four MDs: the Ori and Ter MDs (containing ori and ter, respectively) and the Right and Left MDs flanking the Ter MD. The two regions flanking the Ori MD, called the non-structured regions (NS regions), do not display MD properties and contain loci displaying a higher intracellular mobility than MD-borne loci [9]. Most studies of the localization of chromosomal loci in bacteria have focused on their position along the length of the cell.

PubMedCrossRef 8 Mitsudomi T, Morita S, Yatabe Y, Negoro S, Okam

PubMedCrossRef 8. Mitsudomi T, Morita S, Yatabe Y, Negoro S, Okamoto I, Tsurutani J, Seto T, Satouchi M, Tada H, Hirashima T, Asami K, Katakami N, Takada M, Yoshioka H, Shibata K, Kudoh S, Shimizu E, Saito H, Toyooka S, Nakagawa K, Fukuoka M, West Japan Oncology Group: Gefitinib versus cisplatin plus docetaxel in patients with non-small-cell lung cancer harbouring mutations of the SNX-5422 mouse epidermal growth factor receptor (WJTOG3405): An open label, randomised

phase 3 trial. Lancet Oncol 2010, 11:121–128.PubMedCrossRef 9. Zhou C, Wu YL, Chen G: Efficacy results from the randomised phase III OPTIMAL (CTONG 0802) study comparing first-line erlotinib versus carboplatin (CBDCA) plus gemcitabine (GEM), in Chinese advanced non-small-cell lung cancer (NSCLC) patients (PTS) with EGFR activating mutations. LEE011 Ann Oncol 2010, 21:6. (suppl 8)CrossRef 10. RAD001 Keedy VL, Temin S, Somerfield MR, Beasley MB, Johnson DH, McShane LM, Milton DT, Strawn JR, Wakelee HA, Giaccone G: American Society of Clinical Oncology Provisional Clinical Opinion: Epidermal Growth Factor Receptor ( EGFR ) Mutation Testing for Patients With Advanced Non-Small-Cell Lung Cancer Considering First-Line EGFR Tyrosine Kinase Inhibitor Therapy. J Clin Oncol 2011, 29:2121–7.PubMedCrossRef 11. The Chinese Edition of NCCN Clinical Practice

Guidelines in Oncology-Non-Small Cell Lung Cancer Guideline 2011. 12. Kim ES, Hirsh V, Mok T, Socinski MA, Gervais R, Wu YL, Li LY, Watkins CL, Sellers MV, Lowe ES, Sun Y, Liao ML, Osterlind K, Reck M, Armour AA, Shepherd FA, Lippman for SM, Douillard JY: Gefitinib versus docetaxel in

previously treated non-small-cell lung cancer (INTEREST): a randomised phase III trial. The Lancet 2008, 372:1809–1818.CrossRef 13. Kimura H, Suminoe M, Kasahara K, Sone T, Araya T, Tamori S, Koizumi F, Nishio K, Miyamoto K, Fujimura M, Nakao S: Evaluation of epidermal growth factor receptor mutation status in serum DNA as a predictor of response to gefitinib (IRESSA). Br J Cancer 2007,97(6):778–84.PubMedCrossRef 14. Kimura H, Fujiwara Y, Sone T, Kunitoh H, Tamura T, Kasahara K, Nishio K: High sensitivity detection of epidermal growth factor receptor mutations in the pleural effusion of non-small cell lung cancer patients. Cancer Sci 2006,97(7):642–8.PubMedCrossRef 15. Zhang X, Zhao Y, Wang M, Yap WS, Chang AY: Detection and comparison of epidermal growth factor receptor mutations in cells and fluid of malignant pleural effusion in non-small cell lung cancer. Lung Cancer 2008,60(2):175–82.PubMedCrossRef 16. Brevet M, Johnson ML, Azzoli CG, Ladanyi M: Detection of EGFR mutations in plasma DNA from lung cancer patients by mass spectrometry genotyping is predictive of tumor EGFR status and response to EGFR inhibitors. Lung Cancer 2011,73(1):96–102.PubMedCrossRef 17.