Quantitative assays for human DNA and mRNA were used to examine the paradox that intravenously (IV) infused human multipotent stromal cells (hMSCs) can enhance tissue repair without significant engraftment. After 2 X 106 hMSCs were IV infused into mice, most of the cells were trapped as emboli in lung. The cells in lung disappeared with a half-life of about 24 hr but < 1,000 cells appeared in 6 other tissues. The hMSCs in lung up-regulated expression of multiple genes with a large increase in the anti-inflammatory protein TSG-6. After myocardial infarction, IV hMSCs but not hMSCs transduced with TSG-6 siRNA decreased inflammatory responses, reduced infarct size, and improved cardiac function. IV administration of recombinant TSG-6 also reduced inflammatory responses and reduced infarct size. The results suggest improvements in animal models and patients after IV infusions of MSCs are at least in part explained by activation of MSCs to secrete TSG-6.
Intravenous hMSCs improve myocardial infarction in mice because cells embolized in lung are activated to secrete the anti-inflammatory protein TSG-6.
Specimen part, Disease
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Time of feeding and the intrinsic circadian clock drive rhythms in hepatic gene expression.
No sample metadata fields
View SamplesRestricted feeding impacts the hepatic circadian clock of WT mice. Cry1, Cry2 double KO mice lack a circadian clock and are thus expected to show rhythmical gene expression in the liver. Imposing a temporally restricted feeding schedule on these mice shows how the hepatic circadian clock and rhythmic food intake regulate rhythmic transcription in parallel
Time of feeding and the intrinsic circadian clock drive rhythms in hepatic gene expression.
No sample metadata fields
View SamplesTemporally restricted feeding is known to impact the circadian clock. This dataset shows the effects of temporally restricted feeding on the hepatic transcriptome.
Time of feeding and the intrinsic circadian clock drive rhythms in hepatic gene expression.
No sample metadata fields
View SamplesTemporally restricted feeding has a profound effect on the circadian clock. Fasting and feeding paradigms are known to influence hepatic transcription. This dataset shows the dynamic effects of refeeding mice after a 24hour fasting period.
Time of feeding and the intrinsic circadian clock drive rhythms in hepatic gene expression.
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
The cohesin-associated protein Wapal is required for proper Polycomb-mediated gene silencing.
Specimen part
View SamplesThe cohesin offloading protein Wapal also acts as a polycomb factor in flies. We examined its role in transcriptional role in murine embryonic stem cells (ESCs)
The cohesin-associated protein Wapal is required for proper Polycomb-mediated gene silencing.
Specimen part
View Samples