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エンドサイトーシス・食作用研究用 pHに依存して酸性で蛍光を発します!
pHrodo™ E.coliBioParticlesR conjugate for phagocytosis
pHrodo™, succinimidyl ester(SE)
特長
新しいpHrodo™色素がついた大腸菌pHrodo™ E.coli BioParticle® conjugate for phagocytosis(P35361)、 黄色ブドウ球菌PHrodo S.aureus BioParticle® conjugate for phagocytosis(A10010)は細胞外では非蛍光性ですが、酸性下では明るい赤い蛍光を発します。
食作用のようなインターナリゼーションやリソソームトラフィッキングの研究に理想的です。
細胞への非特異的結合から食作用を識別します。
食作用アッセイで、一般的に必要な、クエンチャーも洗浄ステップも不要。※
従来法より正確で安定した結果が得られます:シグナル変動が減少。
接着が弱い細胞での測定が改善
※pHrodo-dextran の場合は洗浄ステップが必要です。
環境因子や薬剤による食作用の制御および食作用の研究に利用できます。
GFPやfluo-4やcalceinのような緑の色素と同時に利用できます。
pHrodo™色素のついたサクシニジミルエステル(SE,P36600)もございます。
アミン反応性プローブで、目的の微生物などのラベリング用
励起/蛍光最大は、560/585 nm
Newフローサイトメトリー用
pHrodo E. coli BioParticles Phagocytosis Kit for flow cytometry(A10025), pHrodo Phagocytosis Particles Labeling Kit for flow cytometry(A10026)
Title: Phagocytosis of E. coli BioParticlesR conjugated with the novel pH-sensitive and fluorogenic pHrodo? dye.
Images were collected using a Leica SP5 laser confocal microscope employing a 63x (NA 1.4) oil objective and the resonant galvanometer scanner mode (8000Hz). In the course of experiment, J774 cells were maintained at 37°C by means of a stage heater. Excitation via the 561 nm laser (20%) was recorded in the 570-699nm emission range as well as a DIC image on separate PMTs. Images were collected every 30 sec at an effective pixel size of 120nm (4x zoom; image width 61.5 mm) for 83.8 min.
Single-cell phagocytosis was captured by collecting 19 optical slices (1 mm apart) every two min for 54 min. The effective pixel size was 62nm and the image width was 32μm (ZOOM 7.8). 3-D volumes were rendered per time point and animated over time, or maximum intensity projections were animated over time, using Leica software.
Image courtesy of Deborah J. Nelson, Ludmila Deriy, and Vytas Bindokas, the Department of Neurobiology, Pharmacology and Physiology, and the Digital Imaging Core at The University of Chicago.