CyFlow CD20 Pacific Blue
品番 | CE562401 | ||
---|---|---|---|
抗体名 | Anti-Hu CD20 PAC BLUE,LT20 | ||
包装単位 | 100 tests | ||
濃度 | - | ||
容量 | 0.4 ml | ||
関連製品 (アイソタイプコントロール) |
- | ||
反応性|交差吸着 | Human | レーザー | Violet |
抗原 | CD20, B1, Bp35 | 最大蛍光波長 | 455 nm |
クローン | LT20 | 最大励起波長 | 400 to 410 nm |
ホスト | Mouse | 標識/Format | Pacific Blue™ |
アイソタイプ | IgG2a | 研究分野 | Immunophenotyping | Signaling |
クローナリティ | monoclonal | 用途 | Flow cytometry |
Anti-Hu CD20 PAC BLUE,LT20
特異性
The mouse monoclonal antibody LT20 recognizes CD20 antigen, a 33-37 kDa non-glycosylated membrane receptor with four transmembrane domains, expressed on pre-B lymphocytes, resting and activated B cells (not plasma cells), follicular dendritic cells, and at low levels on peripheral blood T lymphocytes.
抗原情報
CD20 (B1, Bp35) is a cell surface 33-37 (depending on the degree of phosphorylation) kDa non-glycosylated surface phosphoprotein expressed on mature and most malignant B cells, but not stem cells or plasma cells (low number of the CD20 has been also detected on a subpopulation of T lymphocytes and it can be expressed on follicular dendritic cells). Its expression on B cells is synchronous with the expression of surface IgM. CD20 regulates transmembrane calcium conductance (probably functioning as a component of store-operated calcium channel), cell cycle progression and B-cell proliferation. It is associated with lipid rafts, but the intensity of this association depends on extracellular triggering, employing CD20 conformational change and/or BCR (B cell antigen receptor) aggregation. After the receptor ligation, BCR and CD20 colocalize and then rapidly dissociate before BCR endocytosis, whereas CD20 remains at the cell surface. CD20 serves as a useful target for antibody-mediated therapeutic depletion of B cells, as it is expressed at high levels on most B-cell malignancies, but does not become internalized or shed from the plasma membrane following mAb treatment.
利用方法
The reagent is designed for Flow Cytometry analysis of human blood cells. Recommended usage is 4 µl reagent / 100 µl of whole blood or 10^6 cells in a suspension. The content of a vial (0.4 ml) is sufficient for 100 tests.
保存方法
Avoid prolonged exposure to light. Store in the dark at 2-8°C. Do not freeze.
安定性情報
Do not use after expiration date stamped on vial label.
レファレンス
• Chan HT, Hughes D, French RR, Tutt AL, Walshe CA, Teeling JL, Glennie MJ, Cragg MS: CD20‑induced lymphoma cell death is independent of both caspases and its redistribution into triton X‑100 insoluble membrane rafts. Cancer·Res. 2003·Sep·1; 63(17):5480‑9. <·PMID:·14500384·>
• Cragg MS, Walshe CA, Ivanov AO, Glennie MJ: The biology of CD20 and its potential as a target for mAb therapy. Curr·Dir·Autoimmun. 2005; 8:140‑74. <·PMID:·15564720·>
• Filatov AV, Krotov GI, Zgoda VG, Volkov Y: Fluorescent immunoprecipitation analysis of cell surface proteins: a methodology compatible with mass‑spectrometry. J·Immunol·Methods. 2007·Jan·30; 319(1‑2):21‑33. <·PMID:·17098248·>
• Glennie MJ, French RR, Cragg MS, Taylor RP: Mechanisms of killing by anti‑CD20 monoclonal antibodies. Mol·Immunol. 2007·Sep; 44(16):3823‑37. <·PMID:·17768100·>
• Hultin LE, Hausner MA, Hultin PM, Giorgi JV: CD20 (pan‑B cell) antigen is expressed at a low level on a subpopulation of human T lymphocytes. Cytometry. 1993; 14(2):196‑204. <·PMID:·7523045·>
• Li H, Ayer LM, Polyak MJ, Mutch CM, Petrie RJ, Gauthier L, Shariat N, Hendzel MJ, Shaw AR, Patel KD, Deans JP: The CD20 calcium channel is localized to microvilli and constitutively associated with membrane rafts: antibody binding increases the affinity of the association through an epitope‑dependent cross‑linking‑independent mechanism. J·Biol·Chem. 2004·May·7; 279(19):19893‑901. <·PMID:·14976189·>
• Petrie RJ, Deans JP: Colocalization of the B cell receptor and CD20 followed by activation‑dependent dissociation in distinct lipid rafts. J·Immunol. 2002·Sep·15; 169(6):2886‑91. <·PMID:·12218101·>
• Polyak MJ, Deans JP: Alanine‑170 and proline‑172 are critical determinants for extracellular CD20 epitopes: heterogeneity in the fine specificity of CD20 monoclonal antibodies is defined by additional requirements imposed by both amino acid sequence and quaternary structure. Blood. 2002·May·1; 99(9):3256‑62. <·PMID:·11964291·>
• Teeling JL, Mackus WJ, Wiegman LJ, van den Brakel JH, Beers SA, French RR, van Meerten T, Ebeling S, Vink T, Slootstra JW, Parren PW, Glennie MJ, van de Winkel JG: The biological activity of human CD20 monoclonal antibodies is linked to unique epitopes on CD20. J·Immunol. 2006·Jul·1; 177(1):362‑71. <·PMID:·16785532·>
• Mason D, Simmons D, Buckley C, Schwartz-Albiez R, Hadam M, Saalmuller A, Clark E, Malavasi F, Morrissey JA (Eds): Leucocyte Typing VII. Oxford·University·Press. 2002; 1‑945. <·NLM·ID:·101177131·>
Available Safety Data Sheets
CyFlow™ monoclonal antibodies SDS CA EN