總結(jié) |
Cannabinoids have been used as pain relievers in eastern medicine for many years.1 To date, two specific cannabinoid receptors have been identified: the Cannabinoid Receptor 1 (CB1R) and the Cannabinoid Receptor 2 (CB2R).2 The cannabinoid receptors can be distinguished by their amino acid sequence, signaling mechanisms and tissue distribution.2 Both receptors belong to the G-protein coupled receptor superfamily and are coupled to Gi/0 G protein.2,3The CB2R is highly expressed in cells of the immune system such as macrophages, lymphocytes natural killer cells and mast cells but has also been shown to be expressed, by both, in situ-hybridization and in immunohistochemistry, in spleen, thymus, and pancreas.1,2,4 CB2R expression in brain is still much less characterized than that of CB1R. Recently, it was demonstrated that CB2R is expressed in brain and might have role in controlling fundamental processes such as proliferation and survival of neural cells.5,6Overexpression of CB2R was reported in several cancers such as prostate, glioma and acute myeloid leukemias.7-9 In human astrocytoma a direct relation between CB2R expression and tumor malignancy was demonstrated.8 Activation of CB2R, in vivo, by its agonist JWH-133, completely blocked cell growth.8 In C6 glioma it was shown that activation of the CB2R by JWH-133 resulted in internalization of only the CB2R, and not CB1R leading to apoptosis of the cells. This may well bea new approach for the treatment of glioma.Alomone is pleased to offer a new, extracellular antibody directed against the human CB2R. Anti-CannabinoidReceptor 2 (extracellular)antibody (#AG1299) can be used in western blot andimmunocytochemistry applications, and recognizes CB2R in human samples.
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別名 |
Cannabinoid receptor 2, CB-2, CB2, hCB2, CX5, CNR2, CB2A, CB2B
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圖像 |
Western blot analysis of HL-60 (human Promyelocytic leukemia) (lanes 1and 2) and MCF-7 (human adenocarcinoma, mammary gland) (lanes 3 and 4) cell line lysates:
1, 3. Anti-Cannabinoid Receptor 2 (extracellular) antibody ( APR11556G), (1:200).
2, 4. Anti-Cannabinoid Receptor 2 (extracellular) antibody, preincubated with the control peptide antigen.
Expression of CB2R in human LNCaP
Immunocytochemical staining of human prostate carcinoma (LNCaP). A. Cells were stained with Anti-Cannabinoid Receptor 2 (extracellular) antibody ( APR11556G), (1:50), followed by goat-anti-rabbit-AlexaFluor-480 secondary antibody. B. Nuclear staining of LNCaP cells with Hoechst 33342. C. Live intact LNCaP cells.
Indirect flow cytomtery analysis in live intact human HL-60 promyelocytic leukemia cells:
Black Cells + goat-anti-rabbit-FITC alone.
<span style="color: 99cc33">Black Cells + Anti-Cannabinoid Receptor 2 (extracellular) antibody ( APR11556G), (5 ug) + goat-anti-rabbit-FITC.
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