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Bronchioalveolar stem cells are a main source for regeneration of distal lung epithelia

ABSTRACT: Bronchioalveolar stem cells are a main source for regeneration of distal lung epithelia

PROVIDER: PRJNA531375 | ENA |

REPOSITORIES: ENA

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Bronchioalveolar stem cells are a main source for regeneration of distal lung epithelia

Project description:Bronchioalveolar stem cells (BASCs) are a potential source for lung regeneration, but direct in vivo evidence is critically missing since specific genetic labeling of BASCs has not been possible. We developed a novel cell tracing approach based on intein-mediated assembly of newly engineered split-effectors, allowing selective targeting of dual-marker expressing BASCs. We found that BASCs generate the majority of distal lung airway cells after bronchioalveolar damage but only moderately contribute to cellular turnover under homeostatic conditions. Importantly, DTA-mediated ablation of BASCs compromised proper regeneration of distal airways. The study defines BASCs as crucial components of the lung repair machinery and provides a paradigmatic example for the detection and manipulation of stem cells that cannot be recognized by a single marker alone.

2019-04-24 | GSE129440 | GEO

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Project description: Not available

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Bronchioalveolar stem cells are a main source for regeneration of distal lung epithelia in vivo.

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Pulmonary fibrosis distal airway epithelia are dynamically and structurally dysfunctional

Project description:To identify genes regulating the jamming transition in healthy distal airway epithelia compared to the dysregulated state in idiopathic pulmonary fibrosis epithelia (IPF) we analyzed RNA from three (3) healthy and four (4) IPF patient cells grown at air-liquid-interface (ALI). This bulk analysis of 3 timepointes (days 4, 8, and 14 of ALI) spanning the jamming transition revealed an enrichment for ERBB- and YAP-related genes.

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Transcriptomic analysis of Campylobacter jejuni grown in medium containing serine as a main energy source

Project description:Campylobacter jejuni is one of the most important causes of food-borne diseases in industrialized countries. It is known that amino acids are important nutrient source for this pathogen, because C. jejuni lacks enzymes related to glycolysis. However, the characteristics on metabolism of C. jejuni grown in the nutrient restricted medium with a specific amino acid is not fully elucidated. This study shows that C. jejuni NCTC11168 grew well in the nutrient restricted medium containing serine, aspartate, glutamate, and proline. The single subtraction of serine significantly reduced the growth, while three other amino acids did not, suggesting the priority of serine among the four amino acids. In the transcriptomic analysis of C. jejuni NCTC11168 grown in medium with serine as a main energy source. Serine seemed to be sensed by some chemoreceptors and the C. jejuni might reached an adaptation stage with active growth. That is, the expression of flagellar assembly components was downregulated and the biosynthesis of multiple amino acids and nucleotide sugars were upregulated. These data suggest the higher requirement of serine as a nutrient of C. jejuni NCTC11168.

2018-09-17 | GSE119472 | GEO

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