Rabbit Polyclonal Leptin antibody. Suitable for WB, IHC-P, ICC/IF and reacts with Recombinant full length protein - Human, Human, Mouse samples. Cited in 31 publications. Immunogen corresponding to Synthetic Peptide within Human LEP aa 50-150.
Preservative: 0.05% Sodium azide
Constituents: PBS
WB | IHC-P | ICC/IF | |
---|---|---|---|
Human | Expected | Tested | Tested |
Mouse | Expected | Expected | Tested |
Cat | Predicted | Predicted | Predicted |
Chimpanzee | Predicted | Predicted | Predicted |
Cow | Predicted | Predicted | Predicted |
Dog | Predicted | Predicted | Predicted |
Goat | Predicted | Predicted | Predicted |
Gorilla | Predicted | Predicted | Predicted |
Horse | Predicted | Predicted | Predicted |
Macaque monkey | Predicted | Predicted | Predicted |
Recombinant full length protein - Human | Tested | Not recommended | Not recommended |
Species | Dilution info | Notes |
---|---|---|
Species Recombinant full length protein - Human | Dilution info 1/500.00000 - 1/5000.00000 | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Human, Mouse | Dilution info Use at an assay dependent concentration. | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Goat, Horse, Cow, Cat, Dog, Chimpanzee, Macaque monkey, Gorilla | Dilution info - | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info - | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Mouse | Dilution info Use at an assay dependent concentration. | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Goat, Horse, Cow, Cat, Dog, Chimpanzee, Macaque monkey, Gorilla | Dilution info - | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Recombinant full length protein - Human | Dilution info - | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Mouse | Dilution info 1/20.00000 - 1/200.00000 | Notes - |
Species Human | Dilution info 1/20.00000 - 1/200.00000 | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Goat, Horse, Cow, Cat, Dog, Chimpanzee, Macaque monkey, Gorilla | Dilution info - | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Recombinant full length protein - Human | Dilution info - | Notes - |
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Key player in the regulation of energy balance and body weight control. Once released into the circulation, has central and peripheral effects by binding LEPR, found in many tissues, which results in the activation of several major signaling pathways (PubMed:15899045, PubMed:17344214, PubMed:19688109). In the hypothalamus, acts as an appetite-regulating factor that induces a decrease in food intake and an increase in energy consumption by inducing anorexinogenic factors and suppressing orexigenic neuropeptides, also regulates bone mass and secretion of hypothalamo-pituitary-adrenal hormones. In the periphery, increases basal metabolism, influences reproductive function, regulates pancreatic beta-cell function and insulin secretion, is pro-angiogenic for endothelial cell and affects innate and adaptive immunity (By similarity) (PubMed:11460888, PubMed:19688109, PubMed:24340098, PubMed:25060689, PubMed:8589726). In the arcuate nucleus of the hypothalamus, activates by depolarization POMC neurons inducing FOS and SOCS3 expression to release anorexigenic peptides and inhibits by hyperpolarization NPY neurons inducing SOCS3 with a consequent reduction on release of orexigenic peptides (By similarity). In addition to its known satiety inducing effect, has a modulatory role in nutrient absorption. In the intestine, reduces glucose absorption by enterocytes by activating PKC and leading to a sequential activation of p38, PI3K and ERK signaling pathways which exerts an inhibitory effect on glucose absorption (PubMed:24340098). Acts as a growth factor on certain tissues, through the activation of different signaling pathways increases expression of genes involved in cell cycle regulation such as CCND1, via JAK2-STAT3 pathway, or VEGFA, via MAPK1/3 and PI3K-AKT1 pathways (By similarity) (PubMed:17344214). May also play an apoptotic role via JAK2-STAT3 pathway and up-regulation of BIRC5 expression (PubMed:18242580). Pro-angiogenic, has mitogenic activity on vascular endothelial cells and plays a role in matrix remodeling by regulating the expression of matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) (PubMed:11460888). In innate immunity, modulates the activity and function of neutrophils by increasing chemotaxis and the secretion of oxygen radicals. Increases phagocytosis by macrophages and enhances secretion of pro-inflammatory mediators. Increases cytotoxic ability of NK cells (PubMed:12504075). Plays a pro-inflammatory role, in synergy with IL1B, by inducing NOS2 wich promotes the production of IL6, IL8 and Prostaglandin E2, through a signaling pathway that involves JAK2, PI3K, MAP2K1/MEK1 and MAPK14/p38 (PubMed:15899045, PubMed:19688109). In adaptive immunity, promotes the switch of memory T-cells towards T helper-1 cell immune responses (By similarity). Increases CD4(+)CD25(-) T-cell proliferation and reduces autophagy during TCR (T-cell receptor) stimulation, through MTOR signaling pathway activation and BCL2 up-regulation (PubMed:25060689).
OB, OBS, LEP, Leptin, Obese protein, Obesity factor
Rabbit Polyclonal Leptin antibody. Suitable for WB, IHC-P, ICC/IF and reacts with Recombinant full length protein - Human, Human, Mouse samples. Cited in 31 publications. Immunogen corresponding to Synthetic Peptide within Human LEP aa 50-150.
Preservative: 0.05% Sodium azide
Constituents: PBS
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Leptin also known as the OB protein is a hormone with a molecular weight of approximately 16 kDa. Primarily it is produced by adipocytes in white adipose tissue and to a lesser extent in the placenta stomach and other tissues. This protein plays a significant role in energy homeostasis by conveying information to the central nervous system regarding fat storage. In scientific studies leptin is often measured using methods like the leptin ELISA kit or mouse leptin assay to monitor its levels and function.
Leptin regulates food intake and energy expenditure by binding to its receptors in the hypothalamus. It is an important part of the feedback loop to manage body weight and appetite. Leptin is not part of a larger protein complex and acts directly on its target tissues. By signal transduction pathways it influences cellular processes such as metabolism and even impacts fertility and immune responses.
Leptin is involved in the neuroendocrine signaling pathway and the MAPK/ERK pathway. In the neuroendocrine system leptin interacts with proteins like proopiomelanocortin (POMC) and neuropeptide Y (NPY) to manage appetite and energy use. Additionally it activates the JAK/STAT pathway when binding to its receptor which influences gene expression involved in metabolism and inflammation.
Leptin is linked to obesity and type 2 diabetes. Leptin deficiencies or resistance can lead to metabolic disorders as the hormone's signaling is disrupted affecting energy balance and storage. Its connection to adiponectin another hormone derived from fat tissue is critical in understanding these conditions; while leptin promotes inflammation adiponectin has anti-inflammatory effects. Exploring these proteins' roles and their balance offers insights into treatments for obesity-related disorders.
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This species and application combination has not been tested, but we predict it will work based on strong homology. However, this combination is not covered by our product promise.
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Immunocytochemistry/Immunofluorescent analysis of Leptin (green) showing staining in the secretion of NIH-3T3 cells. Formalin-fixed cells were permeabilized with 0.1% Triton X-100 in TBS for 5-10 minutes and blocked with 3% BSA-PBS for 30 minutes at room temperature. Cells were probed with ab16227 in 3% BSA-PBS at a dilution of 1:100 and incubated overnight at 4°C in a humidified chamber. Cells were washed with PBST and incubated with a DyLight-conjugated secondary antibody in PBS at room temperature in the dark. F-actin (red) was stained with a fluorescent red phalloidin and nuclei (blue) were stained with Hoechst or DAPI. Images were taken at a magnification of 100x.
ab16227 staining human placenta.
Left panel: with primary antibody. Right panel: isotype control.
Sections were stained using an automated system DAKO Autostainer Plus , at room temperature. Sections were rehydrated and antigen retrieved with the Dako 3-in-1 antigen retrieval buffer citrate pH 6.0 in a DAKO PT Link. Slides were peroxidase blocked in 3% H2O2 in methanol for 10 minutes. They were then blocked with Dako Protein block for 10 minutes (containing casein 0.25% in PBS) then incubated with primary antibody for 20 minutes and detected with Dako Envision Flex amplification kit for 30 minutes. Colorimetric detection was completed with diaminobenzidine for 5 minutes. Slides were counterstained with Haematoxylin and coverslipped under DePeX. Please note that for manual staining we recommend to optimize the primary antibody concentration and incubation time (overnight incubation), and amplification may be required.
All lanes: Western blot - Anti-Leptin antibody (ab16227) at 1/500 dilution
All lanes: Western blot - Recombinant Human Leptin protein (Recombinant Human Leptin protein ab51273) at 1 µg
All lanes: Western blot - Goat Anti-Rabbit IgG H&L (HRP) preadsorbed (Goat Anti-Rabbit IgG H&L (HRP) preadsorbed ab97080) at 1/5000 dilution
Developed using the ECL technique.
Performed under reducing conditions.
Predicted band size: 19 kDa
Exposure time: 3min
Immunocytochemistry/Immunofluorescent analysis of Leptin (green) showing staining in the secretion of HepG2 cells. Formalin-fixed cells were permeabilized with 0.1% Triton X-100 in TBS for 5-10 minutes and blocked with 3% BSA-PBS for 30 minutes at room temperature. Cells were probed with ab16227 in 3% BSA-PBS at a dilution of 1:100 and incubated overnight at 4°C in a humidified chamber. Cells were washed with PBST and incubated with a DyLight-conjugated secondary antibody in PBS at room temperature in the dark. F-actin (red) was stained with a fluorescent red phalloidin and nuclei (blue) were stained with Hoechst or DAPI. Images were taken at a magnification of 100x.
Immunocytochemistry/Immunofluorescent analysis of Leptin (green) showing staining in the secretion of HeLa cells. Formalin-fixed cells were permeabilized with 0.1% Triton X-100 in TBS for 5-10 minutes and blocked with 3% BSA-PBS for 30 minutes at room temperature. Cells were probed with ab16227 in 3% BSA-PBS at a dilution of 1:100 and incubated overnight at 4°C in a humidified chamber. Cells were washed with PBST and incubated with a DyLight-conjugated secondary antibody in PBS at room temperature in the dark. F-actin (red) was stained with a fluorescent red phalloidin and nuclei (blue) were stained with Hoechst or DAPI. Images were taken at a magnification of 100x.
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