Neutrophils were enriched from mouse bone marrow cells using the Mouse Neutrophil column-free negative selection kit. Cells were stained with Ly6G-FITC (SDT Cat: S0B1680) and CD11B-APC (SDT Cat: S0B5527) fluorescent antibodies, and analysis was performed by gating on live cells (Live+), with the proportion of neutrophils in the sorted fraction being assessed. Flow cytometry results indicated that the purity of neutrophils after this sorting step was 90.1%.
Product Details
Product Details
Product Specification
| Format |
1 mL Mouse Neutrophil Biotin-Antibody Cocktail, PBS buffer containing BSA; 1.5 mL Streptavidin Beads, PBS buffer containing BSA and Poloxamer 188; |
| Capacity | Suitable for a total cell count of 1×10⁹, and can perform up to 100 sorting runs. |
| Principle of Separation | In this negative selection process, non‑Mouse Neutrophil cells are labeled with biotin‑conjugated antibodies, and the cells are then incubated with streptavidin‑coated nanomagnetic beads. As a result, the non‑target cells become bound to the magnetic beads via the antibody complexes, while the target Mouse Neutrophil cells remain unlabeled. Subsequently, the cell suspension is transferred to a polystyrene tube and placed within the magnetic field of the sorter. Under the influence of the magnetic field, the magnetically labeled non‑target cells adhere to the tube wall, whereas the unlabeled Mouse Neutrophil cells remain in the supernatant. This supernatant constitutes the enriched fraction of Mouse Neutrophils after removal of the non‑target cells. |
| Applications in cell sorting | Neutrophils in their native, unmanipulated state are isolated from mouse bone marrow and peripheral blood and can be used for a variety of downstream functional assays. |
| Reactivity | Mouse |
| Magnetic Bead Size | 150 nm |
| Separation Method | Column-Free |
| Selection Strategy | Negative Selection |
| Stability & Storage | Store protected from light at 2–8 °C; do not freeze. |
Background
Mouse neutrophils (Mouse Neutrophil)'s specific phenotype isCD11b+Ly6G+Neutrophils are the most abundant innate immune cells in both peripheral blood and bone marrow, serving as the body's first line of defense against bacterial and fungal infections. They play a central role in a variety of physiological and pathological processes, including inflammatory responses, immune regulation, tumor microenvironment remodeling, and tissue repair. The mouse neutrophil negative-selection kit is developed based on immunomagnetic‑bead‑mediated negative selection, overcoming the labeling limitations inherent in positive-selection approaches. By specifically depleting non‑target cells, it yields unlabeled, native‑state, highly purified neutrophils that retain their intrinsic viability and physiological functions, making it ideally suited for a wide range of precise cell‑function assays and the current gold standard for neutrophil isolation in mice.
Protocol
Note: This kit does not include sorting buffer; please prepare it yourself. The corresponding Stater product number isS0D3018
Steps |
Operating Instructions |
Dosage and Time |
1 |
Collect mouse bone marrowor peripheral bloodand prepare a single-cell suspension,Perform cell counting; Note:Mouse peripheral blood requiresthe use ofred blood cell lysis bufferRed Blood Cell Lysis Buffer (without fixative, 1X)(cat:S0D9002) to perform red blood cell lysis;; It is recommended to stain cells withAO/PIbefore counting;; |
Prepare the sample |
2 |
Use100 μLMagSep Separation Bufferto resuspend1×107cells; Note:Reagents should be adjusted proportionally according to the sample volume; set aside a pre-sorting sample to determine the initialMouse Neutrophilratio; |
1×107cells/100 μL |
3 |
Add10 μL MouseNeutrophilBiotin Antibody Cocktailto the sample, and gently mix; Note:For this step, gentle mixing can be achieved by pipetting up and down.2-3below; |
10 μL / 100 μL |
4 |
Incubate the antibodies in the Cocktail with the cells.,2-8℃incubation10 min;2 |
-8℃ incubation10 min5 |
5 |
Vortexfor 5–30 secondsto mix wellStreptavidin beads;mix for 5–30 seconds |
6add |
6 |
to the sample;15 μL/100 μL7 |
gently mix the magnetic beads and cells, |
2 |
-8℃incubate15min5minutes; Note:In this step, gentle mixing can be achieved by gently pipetting up and down2-3times; In this step, the magnetic beads may settle at the bottom; you can gently tap the tube twice to remix them; |
2-8℃incubation15minutes; |
8 |
addMagSep Separation BufferAdd to the sample and immediately place it on the magnetic pole to prevent the magnetic beads from settling at the bottom in large quantities; |
Increase the total volume to2.5 mL(5 mLflow cytometry tube) Increase the total volume to7.5 mL(15 mLcentrifuge tube) |
9 |
Place the sample on the magnetic pole so that the magnetic beads adhere to the tube wall; |
Adsorb using a single-well magnetic rack (3min) Adsorb using a multi-well magnetic rack (5min) |
10 |
Tilt the magnetic rack and pour the sample into a new collection tube to collect the sample; Note:The sorted cells can be centrifuged at400gfor7 min, for subsequent culture and analysis. |
Cell sorting successful |
|
Note:1. 0.1-1 × 108cells(0.1-1mL) are recommended to use5 mLsingle-hole magnetic pole(Starter EasyIso Separator)the total adsorption volume is2.5mL; 2-5 ×108cells(2-5mL) are recommended to use15 mLTandem magnetic poles(Starter EasyEights EasyIso Separator)The total adsorption volume is7.5 mL; 2.If the sample viability is low, it is recommended to use a dead cell removal kit to eliminate dead cells (Dead Cell Removal Set, (RUO)#S0K0009); | ||
Picture
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Validation Data
Neutrophils were enriched from mouse peripheral blood using a column-free negative selection kit for mouse neutrophils. The cells were stained with Ly6G-APC (SDT Cat: S0B5168) and CD11b-Brilliant Violet 421™ (Clone: M1/70) fluorescent antibodies, and live cells (Live+) were gated for analysis to determine the proportion of neutrophils in the sorted fraction. Flow cytometry results showed that the purity of neutrophils after sorting was 94.5%.
