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Macs cell separation column

Manufactured by Miltenyi Biotec
Sourced in United States, Germany

MACS cell separation columns are used for the isolation and purification of specific cell types from complex biological samples. They utilize paramagnetic microbeads coated with antibodies or ligands that bind to target cells, allowing for their separation in a magnetic field. The columns are designed to provide efficient and reliable cell separation, enabling the enrichment of desired cell populations for various research and clinical applications.

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22 protocols using macs cell separation column

1

Investigating Angiotensin II's Impact on Plasmodium falciparum Infection

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P. falciparum 3D7 erythrocytic asexual cultures were maintained at 5% hematocrit in complete media (RPMI 1640, 25 mM HEPES, 10 μg/ml gentamycin, 0.5 mM hypoxanthine, pH 6.75), supplemented with 25 mM sodium bicarbonate and 0.5% Albumax II at 5% oxygen, 5% carbon dioxide and 90% nitrogen. Parasite cultures were synchronized using magnetic separation of schizont stages with MACS cell separation column (Miltenyi Biotec). P. falciparum infected erythrocytes in late stages were added to 96-well plates at 1.9% parasitemia 5% hematocrite and incubated for 24 h in the presence of different concentrations of Ang II (Bachem Americas, Inc., CA, USA). 10 μl from each well were smeared on glass slides and stained with Giemsa before blind microscopic quantification of parasites. To asses whether Ang II interferes in the process of erythrocyte rupture after the completion of the infection cycle, 5x105 schizont stages per well (96% purity) were added to 96-well plates in the presence of different concentrations of Ang II (n = 8/dose) and incubated for 16 h and therefore analyzed independently to quantify the remaining non-ruptured erythrocytes in a standard hemocytometer.
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2

In Vitro Cultivation of P. falciparum

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The erythrocytic asexual stage of P. falciparum (3D7 strain) was cultured in 96 well plates for 96 h, in RPMI media containing 25 mM HEPES, 25 mM sodium bicarbonate, 10 μg/ml gentamycin, 0.5 mM hypoxanthine, at pH 6.75 in atmospheric conditions (5% CO2, 5% O2, and 90% N2). Alternative cultures were done in the presence of DON (50 μM). To set up the culture the parasites were synchronized using MACS cell separation column (MiltenyiBiotec) and the parasitemia was maintained below 5%. The parasite load was determined by GIEMSA staining of peripheral blood smear.
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3

T Cell Chemotaxis Assay with CFSE

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Human CD3+ cells were separated using CD3 microbeads (Miltenyi Biotec) in a MACS cell separation column (Miltenyi Biotec) according to the manufacturer’s instructions. Purity of the retained fraction was more than 95% CD3+, as assessed by flow cytometry. Resting T cells were labeled using CFSE (Thermo Fisher) according to the manufacturer’s instructions and used immediately after being resuspended in RPMI and 0.5% BSA. In some cases, T cells were activated before CFSE labeling using CD3/CD28 Dynabeads (Thermo Fisher) along with 30 U ml−1 IL-2 (PeproTech) for 72 h.
Next, 96-well transwell systems (Corning) were functionalized with 10 μg ml−1 of fibronectin (R&D Systems) in PBS for 3 h at 37 °C. The PBS solution was carefully aspirated, and labeled T cells were added to the top of the inserts. Conditioned media was then added to the bottom of the wells. After 4 h, the insert was removed and the media in the bottom reservoir was read for CFSE using a plate reader. The chemotactic index was defined as the fractional difference in fluorescence between treatment conditions and RPMI control, divided by the fluorescence of the control.
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4

Antigen-Specific T Cell Assay

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CD8+ T cells derived from cancer patients with known NY-ESO-1/MAGE-A3 tumor antigen expression were purified with a MACS cell separation column (Miltenyi Biotec, Lund, Sweden) and presensitized with peptide-pulsed (10 μg/mL), irradiated, autologous peripheral blood mononuclear cells (PBMCs) depleted of CD4+ and CD8+ T cells. Presensitized CD8+ T cells were tested on days 10–12 by the IFN-γ ELISpot assay for recognition of peptide-pulsed (1 μg/mL), autologous APC dendritic cells (DCs; or Epstein-Barr virus [EBV]-transformed B cells). The number of cytokine-producing, antigen-specific T cells was evaluated using the AID ELISpot Reader Classic ELR 07 (Autoimmun Diagnostika, Strassberg, Germany). The number of presensitized effector cells was 2.5 × 104 cells per well (0.5 × 104 for a T cell clone), and ELISpot incubation time was 16 h.
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5

Isolation and Analysis of Immune Cells

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Bleomycin was purchased from Millipore (Billerica, MA). Biotin conjugated rat anti-mouse CD16/32 and CD45 antibodies, PE- and Cy7-conjugated anti-mouse CD45 antibody, FITC-conjugated anti-mouse CD11b antibody and Cytofix/Cytoperm and Perm wash were from BD Biosciences (San Jose, CA). Anti-mouse CD45 magnetic beads and MACS Cell Separation columns were purchased from Miltenyl Biotec (San Diego, CA). Collagen I antibody was purchased from Rockland (Gilbertsville, PA). HRP-conjugated secondary antibodies are from Santa Cruz (Santa Cruz, CA). Collagenase A was purchased from Roche (Indianapolis, IN). Alexa Fluorconjugated secondary antibodies and fluorescein-conjugated type I collagen are from Life Technologies (Grand Island, NY). Rabbit IgG isotype control antibody was purchased from Southern Biotech (Birmingham, AL). Collagen III antibody was from Abcam (Cambridge, MA). LAMP1 antibody was from the University of Iowa Developmental Studies Hybridoma Bank. Adenoviruses expressing Cre was from the University of Iowa Gene Transfer Vector Core Facility. All other reagents were purchased from Sigma-Aldrich (St Louis, MO).
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6

PBMC Isolation and Characterization

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PBMC experiments were carried out with ethical approval. Demographics of healthy donors are shown in Table 1. Peripheral blood samples (approx. 50 ml) were drawn into lithium heparin tubes (Becton Dickinson). Samples were maintained at room temperature and processed immediately the following venepuncture. PBMCs were isolated by density gradient centrifugation using Ficoll-Hypaque. Proliferation assays were performed immediately after PBMC isolation. The median number of PBMCs routinely derived from healthy donors was 1.36 × 106 PBMC/ml whole blood (range 0.6 × 106–1.8 x 106/ml). The median viability as assessed by trypan blue exclusion was 90.6% (range 80–97%). For CD25 depletion PBMCs were processed as above and then immediately enriched with anti-CD25 microbeads and MACS cell separation columns (Miltenyi).
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7

Monocyte-Derived Macrophage Activation

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Peripheral blood mononuclear cells were isolated from a buffycoat (Sanquin blood supply, Amsterdam, the Netherlands) through density centrifugation using Lymphoprep™ (Axis‐Shield, Dundee, Scotland). Monocytes were then purified using human CD14 magnetic beads and MACS® cell separation columns (Miltenyi Biotec, Bergisch Gladbach, Germany). Monocytes were plated in 24‐well tissue culture plates at a density of 1×106 cells/mL (500 μL per well) and differentiated to macrophages for 6 days in Iscove's Modified Dulbecco's Medium (Sigma‐Aldrich) supplemented with 2 mmol/L l‐glutamine, penicillin (100 U/mL), streptomycin (100 μg/mL) and 10% fetal calf serum (All Gibco, Waltham, MA) in the presence of 50 ng/mL macrophage colony stimulating factor (MCSF) (Miltenyi Biotec, Bergisch Gladbach, Germany). On day 3, the medium was removed and substituted by fresh Iscove's Modified Dulbecco's Medium with 10% fetal calf serum and 50 ng/mL MCSF. On day 6, all medium was removed and replaced by Iscove's Modified Dulbecco's Medium with 10% fetal calf serum without MCSF and cells were activated for 18 hours with vehicle (DMSO), LPS (10 ng/mL, Sigma‐Aldrich), a liver X receptor (LXR) agonist (TO‐901317, 10 μmol/L, Sigma‐Aldrich), and LPS+LXR agonist. Total RNA was extracted from the cell lysate.
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8

Formulation and Characterization of SPIO Nanoparticles

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Purified Miglyol 840 (oil phase) was kindly provided by IOI OLEO GmbH (Hamburg, Germany). Egg lecithin containing 82.3% phosphatidylcholine (Lipoid E80) and N-(carbonyl-methoxypolyethylenglycol-2000)-1,2-distearoyl-sn-glycero-3-phosphoethanolamine (DSPE–PEG2000) were provided by Lipoid GmbH (Ludwigshafen, Germany); polysorbate 80 (Tween 80) was purchased from SEPPIC (Paris, France). The hetero-bifunctional linker 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-poly(ethylene glycol)-maleimide (DSPE–PEG3400–maleimide) was purchased from Laysan Bio, Inc. (Arab, AL 35016, USA). SPIO nanoparticles were synthesized and made hydrophobic by following previously described procedures [65 (link),66 (link),67 (link)]. Tris(2-carboxyethyl)phosphine hydrochloride (TCEP; ≥98%), hydrochloric acid, formic acid, the PBS buffer, sodium hydroxide, and IgG were bought from Sigma-Aldrich (St. Louis, MO 63178, USA). The PBS–heparin solution was from Sanofi Aventis (Vitry-sur-Seine, France). Glycerol was purchased from Cooperation Pharmaceutique Française (Melun, France). MACS Cell Separation Columns were from Miltenyi Biotec (Bergisch Gladbach, Germany).
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9

Isolation and Analysis of Endothelial and Smooth Muscle Cells

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RNA was isolated from purified ECs isolated from lungs. Lungs of the mice were extracted and then incubated for 1 hour with collagenase IV 2 mg/mL at 37°. After centrifugation at 4200 rpm for 7 minutes, cells were labeled using rat anti-CD31 antibodies (BD Pharmingen Inc) then purified using anti-rat IgG MicroBeads (Miltenyi Biotec) and MACS Cell Separation Columns (Miltenyi Biotec) according to the manufacturer's instruction. SMCs were isolated from the aorta: endothelium was mechanically removed by swabbing the lumen with a cotton swab then the adventicia was mechanically torn apart after a 10-minute treatment with collagenase-1 (1 mg/mL). Mouse tissues or cells were homogenized in TRI-REAGENT (Thermofisher) and RNA extracted (Sewduth et al, 2014). For quantitative reverse-transcription polymerase chain reaction analyses, total RNA was reverse transcribed with Moloney Murine leukemia virus reverse transcriptase (Promega), and amplification was performed on a DNA Engine Opticon2 (MJ Research Inc) using B-R SYBER Green SuperMix (Quanta Biosciences). Primer location on Phactr1 sequence is shown in Figure 1 and sequences are reported in Table S1. The relative expression of each mRNA was calculated by the comparative threshold cycle method and normalized to β-actin mRNA expression. 19 (link)
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10

Isolation and Characterization of Murine Immune Cell Subsets

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Single-cell suspensions were prepared from spleen, bone marrow and thymus of 6-14 week old mice. Single-cell suspensions were stained with antibodies and analyzed using FACS Calibur with CellQuest software (BD Bioscence, San Diego, CA) or FlowJo software (Tree Star, Ashland, OR) (15 (link)). B220+CD43-IgM- small pre-B cells and CD4+CD8+ double-positive T cells were sorted by a MoFlo flow cytometer. Splenic B cells were purified using B cell isolation kits with MACS cell separation columns (Miltenyi Biotec, San Diego, CA). Generally we pooled bone marrow or splenic cells from 2-3 animals of the same genetic background for cell fractionation. Antibodies used are as follows: anti-mouse-Igκ-PE (BD Bioscience); anti-mouse-Igλ1,2,3-FITC (BD Bioscience); anti-human-Igκ-FITC (Southern Biotech, Birmingham, AL); anti-B220-PerCP-Cy5.5, anti-IgM-APC, anti-CD43-PE, anti-B220-FITC, anti–CD21-FITC, anti–CD23-APC, anti–CD4-FITC, anti–CD8a-PE, anti-B220-biotin (all from BD Bioscience); Streptavidin-APC (Southern Biotech).
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