Rabbit Anti-Human Leptin

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Cat-Nr.102-PA135
Size200 µg
Price290 €
CategoryPolyclonal Antibody
Clone Nr.Rabbit IG
Species ReactivityHuman
Formulationlyophilized
BufferPBS
ReconstitutionCentrifuge vial prior to opening. Reconstitute in sterile water to a concentration of 0.1-1.0 mg/ml.
Stability and StorageThe lyophilized antibody is stable at room temperature for up to 1 month. The reconstituted antibody is stable for at least two weeks at 2-8 °C. Frozen aliquots are stable for at least 6 months when stored at -20 °C.
AntigenRecombinant human Leptin (RT #400-019)
ApplicationWB
SynonymsLEP; OB; OBS
DescriptionObesity is linked to increased incidence of breast cancer. The precise causes and mechanisms of these morbid relationships are unknown. However, accumulating evidence would suggest that leptin’s pro-angiogenic effects in cancer play an essential role in the disease. Leptin, the main adipokine secreted by adipose tissue, is also abnormally expressed together with its receptor (OB-R) by breast cancer cells. Leptin induces proliferation and angiogenic differentiation of endothelial cells upregulates VEGF/VEGFR-2 and transactivates VEGFR-2 independent of VEGF. Leptin induces two angiogenic factors: IL-1 and Notch that can increase VEGF expression. Additionally, leptin induces the secretion and synthesis of proteases and adhesion molecules needed for the development of angiogenesis. Leptin’s paracrine actions can further affect stromal cells and tumor associated macrophages, which express OB-R and secrete VEGF and IL-1, respectively. A complex crosstalk between Leptin, Notch and IL-1 (NILCO) that induces VEGF/VEGFR-2 is found in breast cancer. Leptin actions in tumor angiogenesis could amplify, be redundant and/or compensatory to VEGF signaling. Current failure of breast cancer anti-angiogenic therapies emphasizes the necessity of targeting the contribution of other pro-angiogenic factors in breast cancer. Leptin’s impact on tumor angiogenesis could be a novel target for breast cancer, especially in obese patients. However, more research is needed to establish the importance of leptin in tumor angiogenesis.
Uniprot IDP41159
Protein RefSeqNP_000221.1
mRNA RefSeqNM_000230

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