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TranscriptomicsH. pylori G27 HP0518 mutant showed greater motility
Helicobacter pylori is a human gastric pathogen associated with gastric and duodenal ulcers as well as specific gastric cancers. It is well-evidenced that motility is essential for this pathogen to colonize human gastric tissues. We found that the H. pylori G27 HP0518 mutant showed greater motility ...
ORGANISM(S): Helicobacter pylori 
2010-12-22 | E-GEOD-14752 | biostudies-arrayexpress
TranscriptomicsMacrophages recognize the Helicobacter pylori type IV secretion system in the absence of TLR signaling
Helicobacter pylori conquered the world by colonizing the human stomach. There are two major groups of strains, one with and one without a cag pathogenicity island (cagPAI), which result in different clinical outcomes with increased severity in cagPAI+ H. pylori infections such as higher inflammatio...
ORGANISM(S): Mus musculus 
2015-09-01 | E-GEOD-56791 | biostudies-arrayexpress
TranscriptomicsSugar turns benefit of cholesterol into immune evasion in Helicobacter pylori infected C57BL/6 mice
Following the initial demonstration of Helicobacter pyloriâ??s pathogenic potential, evidence has been accumulated that H. pylori is the leading cause of gastric ulcers, carcinoma and lymphoma3. Cholesterol is a physiological constituent of membranes critical for their biophysical properties, but is...
ORGANISM(S): Mus musculus 
2010-06-30 | E-GEOD-3878 | biostudies-arrayexpress
TranscriptomicsCharacterization of the HP1021 regulon of Helicobacter pylori
The genome of the gastric pathogen Helicobacter pylori harbors a remarkably low number of regulatory genes, including three and five open reading frames encoding two-component histidine kinases and response regulators, respectively, which are putatively involved in transcriptional regulation. Inacti...
ORGANISM(S): Helicobacter pylori 
2010-07-01 | E-GEOD-5971 | biostudies-arrayexpress
TranscriptomicsCharacterization of the ArsRS regulon of Helicobacter pylori
The human gastric pathogen Helicobacter pylori is extremely well adapted to the highly acidic conditions encountered in the stomach. The pronounced acid resistance of H. pylori relies mainly on the ammonia-producing enzyme urease, however, urease-independent mechanisms are likely to contribute to ac...
ORGANISM(S): Helicobacter pylori 
2010-07-01 | E-GEOD-4293 | biostudies-arrayexpress
TranscriptomicsTranscription profiling of human samples to compare new and stripped Affymetrix chips
new and stripped chips Experiment Overall Design: Affy1H1 = rehyb Affy1H2; Experiment Overall Design: Affy2H1 = rehyb Affy2H2
ORGANISM(S): Homo sapiens 
2008-06-12 | E-GEOD-2833 | biostudies-arrayexpress
TranscriptomicsH. pylori infection blocks DNA damage induced apoptosis by T4SS-dependent upregulation of miR-155
The innate immune response against Helicobacter pylori is mainly controlled by pattern recognition receptors that lead to the up-regulation of pro-inflammatory cytokines. A new player in this field is the miR-155 being regulated by TLR ligands in monocytic derived cells influencing certain intracell...
ORGANISM(S): Mus musculus 
2012-04-02 | E-GEOD-29388 | biostudies-arrayexpress
TranscriptomicsHelicobacter pylori induce miR-155 in T cells in a cAMP-Foxp3 dependant manner
The human pathogen Helicobacter pylori (Hp) colonizes the gastric epithelium as a unique niche in the stomach. Infections commonly occur in childhood and persist lifelong, leading in some cases to adenocarcinoma and MALT lymphoma. Several studies define mammalian microRNAs as key regulators of the i...
ORGANISM(S): Mus musculus 
2010-12-22 | E-GEOD-18616 | biostudies-arrayexpress
TranscriptomicsGlobal expression profiling reveals shared and distinct transcript signatures in arrested act2(-) and CDPK4(-) Plasmodium berghei gametocytes
Gametocytogenesis and gametogenesis in malaria parasites are complex processes of cell differentiation and development likely involving many gene products. Gametocytes develop in the blood of the vertebrate host but mature gametocytes are not activated until taken up by the mosquito vector. Several ...
ORGANISM(S): Plasmodium berghei 
2015-09-15 | E-GEOD-65032 | biostudies-arrayexpress
TranscriptomicsThe effect of hfq on global gene expression and virulence in Neisseria gonorrhoeae
Hfq is an RNA chaperone, which functions as a pleiotropic regulator for RNA metabolism in bacteria. To characterize the role of Hfq in pathogenicity of Neisseria gonorrhoeae we generated a N. gonorrhoeae hfq mutant, MS11hfq.Transcriptional analysis using a custom-made N. gonorrhoeae microarray revea...
ORGANISM(S): Neisseria gonorrhoeae 
2010-06-23 | E-GEOD-16046 | biostudies-arrayexpress
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