Mouse UCP1 ELISA Kit (A303388) has been discontinued and is no longer available.
View all UCP1 ELISA Kits.
| Sample Type | n | Range | Average |
|---|---|---|---|
| Serum | 5 | 90% - 102% | 96% |
| EDTA Plasma | 5 | 89% - 101% | 94% |
| Heparin Plasma | 5 | 90% - 104% | 100% |
| Sample Type | n | 1:2 | 1:4 | 1:8 |
|---|---|---|---|---|
| Serum | 5 | 86-96% | 87-101% | 87-102% |
| EDTA Plasma | 5 | 89-100% | 93-101% | 90-99% |
| Heparin Plasma | 5 | 90-100% | 90-98% | 91-100% |
| Item | Quantity | Storage |
|---|---|---|
| Pre-Coated 96 Well Microplate | 12 x 8 Well Strips | +4°C |
| Lyopholized Standard | 2 Vials | +4°C |
| Sample Dilution Buffer | 20ml | +4°C |
| Biotinylated Detection Antibody | 120µl | +4°C |
| Antibody Dilution Buffer | 10ml | +4°C |
| HRP-Streptavidin Conjugate | 120µl | +4°C |
| SABC Dilution Buffer | 10ml | +4°C |
| TMB Substrate | 10ml | +4°C |
| Stop Solution | 10ml | +4°C |
| Wash Buffer (25X) | 30ml | +4°C |
| Plate Sealers | 5 Adhesive Strips | - |
| Foil Pouch | 1 Zip-Sealed Pouch | - |
Objectives: Cold-triggered adaptation of the brown adipose tissue (BAT) promotes increased non-shivering thermogenesis and helps maintain body temperature. This study investigated the role of the secreted protein developmental endothelial locus-1 (DEL-1) in regulating BAT adaptation to cold.
Methods: DEL-1 expression in BAT was assessed following cold exposure in mice. The role of DEL-1 in cold-induced BAT adaptation, thermogenesis and proliferation of brown adipocyte progenitor cells was analyzed by utilizing genetically modified mouse models. Mechanistic insights into DEL-1-mediated regulation of brown adipocyte progenitor proliferation were obtained through in vitro assays.
Results: DEL-1 was expressed in the vascular endothelium of the BAT and its expression was upregulated upon cold exposure. By interacting with avß3 integrin on brown adipocyte progenitor cells, DEL-1 promoted their proliferation in a manner dependent on AKT signaling and glycolysis activation. Compared to DEL-1-sufficient mice, DEL-1-deficient mice or mice expressing a non-integrin-binding mutant of DEL-1 carrying an Asp-to-Glu substitution in its RGD motif, displayed decreased cold tolerance. This phenotype was associated with impaired BAT adaptation to cold and reduced brown adipocyte progenitor cell proliferation. Conversely, endothelial-specific DEL-1 overexpression in DEL-1-deficient mice restored the BAT thermogenic response to cold.
Conclusions: Together, the DEL-1/avß3 integrin-dependent endothelial-brown adipocyte progenitor cell crosstalk promotes cold-stimulated BAT adaptation. This knowledge could be potentially harnessed therapeutically for promoting BAT expansion towards improving systemic metabolism.