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Anti cd11c beads

Manufactured by Miltenyi Biotec
Sourced in France

Anti-CD11c beads are magnetic beads that are coated with antibodies specific to the CD11c antigen. CD11c is a cell surface marker expressed on dendritic cells and other antigen-presenting cells. These beads can be used to isolate and enrich CD11c-positive cells from various samples, such as blood, tissues, or cell cultures. The beads facilitate the separation and purification of these cell populations for further analysis or experimental applications.

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7 protocols using anti cd11c beads

1

Isolation of Immune Cell Subsets from Murine Spleen

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To isolate DCs, spleens were collected, incubated for 30 min at 37 °C in HBSS (Gibco) supplemented with CaCl2, MgCl2, and collagenase D at 400 U ml−1 (Roche). After digestion, tissue was forced 5 times through a 21-gauge needle and filtered through a 70 μm strainer into a 15 ml falcon tube with PBS supplemented with 0.5% BSA and 2 mM EDTA (PBE). Red-blood cells were lysed with ACK buffer (Gibco), and the resulting cell suspensions were filtered through a 70-μm mesh into PBE. DCs were obtained by magnetic cell separation (MACS) using anti-CD11c beads (Miltenyi Biotec), as per the manufacturer’s instructions. To isolate CD4+ T cells, CD8+ T cells, and B cells, spleens were processed as above, without collagenase digestion. CD4+ T cells and CD8+ T cells were isolated by negative selection using a cocktail of biotinylated antibodies targeting Ter119, CD11c, CD11b, CD25, B220, NK1.1, and either CD8 (for CD4+ isolation) or CD4 (for CD8+ isolation), followed by anti-biotin beads (Miltenyi Biotec), as per the manufacturer’s instructions. B cells were obtained by negative selection using anti-CD43 beads (Miltenyi Biotec), as per the manufacturer’s instructions.
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2

Characterization of Splenic CD11c+ Cells

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CD11c+CD3eB220CD317 splenic cells from immunized mice were first magnetically sorted with anti-CD11c-Beads (Miltenyi Biotec, Paris, France) and then by FACS ARIA after labeling with anti-CD11c/eF450 (N418), anti-B220/PE (RA3–6B2), anti-CD317/APC (eBio927) and anti-CD3e/FITC (17A2) antibodies. The purity was always > 96.3% of live cells. RNA from purified CD11c+ cells was extracted from cell lysates with the RNeasy Plus microkit (QIAGEN, Courtaboeuf, France). cDNA was generated using a RT2 First Strand Kit and quantified using the RT2 Profiler Mouse antiviral responses and NF-κB signaling pathway PCR arrays (SABiosciences, QIAGEN, Courtaboeuf, France), according to the manufacturer’s instructions. The results were analyzed using the SA Biosciences Data Analysis Web Portal (http://pcrdataanalysis.sabiosciences.com/pcr/arrayanalysis.php) and expressed as fold regulation compared to PBS-treated mice.
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3

Purification of Lymphocyte Subsets

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Non-CD4+ lymph node and spleen T cells were removed by MACS beads (Miltenyi Biotec) after coating with biotin anti-CD8α, DX5, B220, CD3, CD11b, Ly-6G, and Ter119. Cells were further purified with a FACSAria 2 sorter (BD) to >97%. Spleen CD11c+ DCs were partially enriched with anti-CD11c beads (Miltenyi Biotec) and, where indicated, purified with a FACSAria 2 (BD) cell sorter as CD11chighCD19CD3DX5 DCs (>95%).
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4

Bone Marrow-Derived DC-B Cell Co-Culture

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Bone marrow (BM)-derived DCs (BMDCs) were differentiated with 10 ng/ml GM-CSF (Peprotech) and 5 ng/ml IL-4 (Peprotech), then purified with anti-CD11c beads (Miltenyi Biotec), as previously described [3] (link). CD43 B cells were isolated from B6 splenocytes by negative selection (Miltenyi Biotec). For BMDC-B cell co-cultures, 2×104 BMDCs from either TC or B6 mice were cultured for 5 d with 105 B cells and 10 ug/ml anti-CD40 Ab (1C10) (eBioscience) in duplicate as previously described [3] (link). The effect of cytokine inhibition on B cell proliferation was studied by adding 10 ug/ml of anti-IL-6 (MP5-20F3) (BD Biosciences) and/or anti-IFN-γ (XMG1.2) (eBioscience) to the co-cultures. To quantify cytokine secretion by activated BMDCs, 2×104 BMDCs were cultured with 10 ug/ml anti-CD40 Ab for 24 h, after which RNA was extracted for qRT-PCR and gene array analyses, and supernatants were collected from the cultures for ELISA. IFN-γ was also quantified by intracellular flow cytometry, and BMDCs stimulated with either IL-12 (5 ng/ml) or IL-18 (20 ng/ml) were used as positive controls. Mice used in these experiments were 2–3 months of age.
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5

Analyzing Leishmania Infection in Dendritic Cells

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CD11c+ dendritic cells (DCs) were isolated using anti-CD11c beads (Miltenyi Biotec) [19 (link)]. BMDC were generated as previously described [91 (link)] and seeded at 106 cells/ml onto 24-well plates. Cells were subsequently infected with PKH26-stained L. donovani amastigotes (Sigma, staining done according to manufacturer’s instructions) at a MOI of 5:1. Infected cells were then harvested 24, 48, and 72 h later, fixed with 2% PFA, stained with Hoechst (Invitrogen, staining done according to manufacturer’s instructions) and cytospined on PBS/ 1% BSA-prepared slides. Mounted slides were than analyzed using a fluorescent microscope, to evaluate parasite survival and target infection rate.
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6

Isolation of Immune Cell Populations

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To isolate DCs, spleens were harvested, incubated 30 min at 37 °C in RPMI, 2% FBS, 20 mM HEPES, 400 U/ml type IV collagenase (Worthington Biochemical Corporation) and disrupted to generate single cell suspensions. Red blood cells were lysed with ACK buffer (Lonza), and the resulting cell suspensions were filtered through a 70 μm mesh into PBS supplemented with 0.5% BSA and 2 mM EDTA (PBE). DCs were obtained by magnetic cell separation (MACS) using anti-CD11c beads (Miltenyi Biotec), as per manufacturer’s instructions. To isolate CD4+ T cells and B cells, spleens were processed as above, except for collagenase digestion, which was not performed. CD4+ T cells were isolated using CD4+ T cell isolation kit (Miltenyi Biotec) while B cells were obtained by negative selection using anti-CD43 beads (Miltenyi Biotec), as per manufacturer’s instructions. To isolate Igλ+ B cells form B1-8hi mice, B cells were stained with anti-Igκ PE antibody and subsequently purified by negative selection using a combination of anti-CD43 and anti-PE magnetic beads (Miltenyi Biotec).
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7

Hepatic Non-Parenchymal Cell Isolation

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Hepatic NPCs were isolated as described above and samples were then cleared with Debris Removal Solution according to the manufacturer's protocol (Miltenyi), followed by blocking with anti-CD16/32 antibody. For negative selection of DCs, NPCs were incubated with lineage-specific antibodies (F4/80-PE; CD3-PE; CD19 PE; NK1.1-PE) and Anti-PE-Beads (Miltenyi) to facilitate the retention of these cell lineages on LD columns according to the manufacturer's protocol. The cells in the flowthrough were incubated with Anti-CD11c-Beads (Miltenyi), and positive selection of CD11c+ cells with MS columns was performed according to the manufacturer's protocol (Miltenyi) .
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