GSE100067: The islet resident macrophage is in an inflammatory state and senses microbial products in blood

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GROUP CONDITION SAMPLES
Islet macrophages
GSM2670773 GSM2670774 GSM2670775 GSM2670776
GSM2670770 GSM2670771 GSM2670772
GSM2670763 GSM2670764 GSM2670765 GSM2670766
GSM2670777 GSM2670778 GSM2670779 GSM2670780 GSM2670781
GSM2670767 GSM2670768 GSM2670769
Description

Submission Date: Jun 15, 2017

Summary: We examined the transcriptional profiles of macrophages that reside in the islets of Langerhans of NOD, NOD.Rag1-/-, and B6.g7 mice at three weeks of age. Islet macrophages expressed an activation signature with high expression of Tnf, Il1b, and MHC-II both at the transcript and protein levels. These features are common with barrier macrophages of the lung and gastrointestinal tract. Moreover, injection of lipopolysaccharide induced a rapid inflammatory gene expression, indicating that blood stimulants are accessible to the macrophages and that these macrophages can sense them. In NOD mice, the autoimmune process imparted an increased inflammatory signature, including elevated expression of chemokines, chemokine receptors, and an oxidative response. The elevated inflammatory signature indicates that the autoimmune program was active at the time of weaning. Thus, the macrophages of the islets of Langerhans are poised to mount an immune response even at steady state, while the presence of the adaptive immune system elevates their activation state.

GEO Accession ID: GSE100067

PMID: 28630088

Description

Submission Date: Jun 15, 2017

Summary: We examined the transcriptional profiles of macrophages that reside in the islets of Langerhans of NOD, NOD.Rag1-/-, and B6.g7 mice at three weeks of age. Islet macrophages expressed an activation signature with high expression of Tnf, Il1b, and MHC-II both at the transcript and protein levels. These features are common with barrier macrophages of the lung and gastrointestinal tract. Moreover, injection of lipopolysaccharide induced a rapid inflammatory gene expression, indicating that blood stimulants are accessible to the macrophages and that these macrophages can sense them. In NOD mice, the autoimmune process imparted an increased inflammatory signature, including elevated expression of chemokines, chemokine receptors, and an oxidative response. The elevated inflammatory signature indicates that the autoimmune program was active at the time of weaning. Thus, the macrophages of the islets of Langerhans are poised to mount an immune response even at steady state, while the presence of the adaptive immune system elevates their activation state.

GEO Accession ID: GSE100067

PMID: 28630088

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