BioParticles製品の使用法 BioParticles™接合は凍結乾燥粉末として提供されます。約3 x 108の大腸菌または黄色ブドウ球菌粒子/mg(固体)および約2 x 107のザイモサン粒子/mg(固体)が存在します。BioParticles™コンジュゲートは、食作用アッセイで使用するために選択した緩衝液で再構成できます。細胞の表面に結合している(しかし内部に取り込まれていない)BioParticles™コンジュゲートの蛍光は、エチジウムブロマイド、トリパンブルー、または他のクエンチャーよって消光できます。細胞での用途に加えて、蛍光BioParticles™コンジュゲートは、細菌や酵母変異体を分類する際のフローサイトメトリーキャリブレーションリファレンスとして有効な場合があります。微小粒子は、サイズと形状が特徴的に異なるため、光散乱研究の参考になる可能性もあります。
While the bacteria have been attenuated with formaldehyde and alcohol desiccation, the BioParticles products are not considered sterile, and we do not recommend incubation of more than 4 hours. This applies to all of our dye-labeled (pHrodo, Alexa Fluor, etc.) and unlabeled BioParticles products.
What is the type of bond that attaches the dyes to the BioParticles probes?
We use amine-reactive dyes to covalently attach fluorescent dyes to all of our BioParticles probes such as the Escherichia coli (K-12 strain) BioParticles probes, Staphylococcus aureus (Wood strain without protein A) BioParticles, and the Zymosan A (S. cerevisiae) BioParticles probes.
Journal:Proceedings of the National Academy of Sciences of the United States of America
PubMed ID:16617118
The mechanisms regulating activation of monocytes remain incompletely understood. Herein we provide evidence that Kruppel-like factor 2 (KLF2) inhibits proinflammatory activation of monocytes. In vitro, KLF2 expression in monocytes is reduced by cytokine activation or differentiation. Consistent with this observation, KLF2 expression in circulating monocytes is reduced in patients with ... More
Importance of MEK in neutrophil microbicidal responsiveness.
'Exposure of neutrophils to inflammatory stimuli such as the chemoattractant FMLP leads to activation of responses including cell motility, the oxidative burst, and secretion of proteolytic enzymes. A signaling cascade involving sequential activation of Raf-1, mitogen-activated protein kinase (MEK), and extracellular signal regulated kinase (ERK) is also rapidly activated after ... More
Myosin light chain phosphorylation does not increase during yeast phagocytosis by macrophages.
Authors:de Lanerolle P, Gorgas G, Li X, Schluns K
Journal:J Biol Chem
PubMed ID:8349578
'We have studied the role of myosin II light chain phosphorylation in yeast phagocytosis by J774 cells. J774 cells, which are mouse cells of monocyte/macrophage lineage, ingest opsonized yeast particles, and the rate of internalization is linear for 60 min at 37 degrees C. Immunoprecipitation of myosin II from cells ... More
Ca2+ and synaptotagmin VII-dependent delivery of lysosomal membrane to nascent phagosomes.
Authors:Czibener C, Sherer NM, Becker SM, Pypaert M, Hui E, Chapman ER, Mothes W, Andrews NW
Journal:J Cell Biol
PubMed ID:16982801
Synaptotagmin (Syt) VII is a ubiquitously expressed member of the Syt family of Ca2+ sensors. It is present on lysosomes in several cell types, where it regulates Ca2+-dependent exocytosis. Because [Ca2+]i and exocytosis have been associated with phagocytosis, we investigated the phagocytic ability of macrophages from Syt VII-/- mice. Syt ... More
Polyethylene glycol-modified GM-CSF expands CD11b(high)CD11c(high) but notCD11b(low)CD11c(high) murine dendritic cells in vivo: a comparative analysis with Flt3 ligand.
Authors:Daro E, Pulendran B, Brasel K, Teepe M, Pettit D, Lynch DH, Vremec D, Robb L, Shortman K, McKenna HJ, Maliszewski CR, Maraskovsky E
Journal:J Immunol
PubMed ID:10861034
Dendritic cells (DC) are potent APCs that can be characterized in the murine spleen as CD11b(high)CD11c(high) or CD11b(low)CD11c(high). Daily injection of mice of Flt3 ligand (FL) into mice transiently expands both subsets of DC in vivo, but the effect of administration of GM-CSF on the expansion of DC in vivo ... More