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4 protocols using pe cy7 sca

1

Isolation of Murine Hematopoietic Stem Cells

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Bone marrow cells were harvested from tibia and femurs of mice by gentle flushing with HBSS++ buffer [Hanks balanced salt solution (10–547F, Lonza) + HEPES (BP299–100, Fisher Scientific) + Fetal bovine serum (F2442, Sigma) + penicillin-streptomycin (15140–122, GIBCO)]. Samples were filtered through a 70 μM filter to obtain a single cell suspension and Lin enrichment was performed with lineage negative selection using the lineage cell depletion kit (130–090-858, Miltenyi). For isolation of LSK cells and LT-HSCs, Lin cells were incubated with biotin-labeled lineage antibody cocktail from BD containing a mixture of antibodies against CD3, CD11b, CD19, B220, Gr-1 and Ter119 (51–09082J, BD Pharmingen), followed by staining with streptavidin-PE secondary antibody (554061, BD). LSK cells were identified as Lin-Sca-1+c-kit+ using PE-Cy7-Sca (Clone D7, 558162, BD Biosciences) and APC-c-kit (Clone ACK2, 135108, BD Biosciences) antibodies; whereas LT-HSCs were recognized by being LSK and CD150+CD48- using PE-Cy7-Sca (Clone D7, 558162, BD Biosciences), APC-c-kit (Clone ACK2, 135108, BD Biosciences), Pacific Blue-CD150 (Clone TC15–12F12.2, 115924, Biolegend) and APC-Cy7-CD48 (Clone HM48–1, 47–0481-82, e-Bioscience). Cells were sorted using a BD FACSAria cell sorter.
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2

Isolation of Long-Term Hematopoietic Stem Cells

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Mice were sacrificed and the bone marrow from tibia and femurs was harvested by gentle flushing with HBSS++ buffer [Hanks balanced salt solution (10-547F, Lonza) + HEPES (BP299-100, Fisher Scientific) + Fetal bovine serum (F2442, Sigma) + penicillin-streptomycin (15140–122, GIBCO)]. A 70 μM filter was used for filtering the samples and obtaining a single cell suspension. Lin- enrichment was performed with lineage negative selection using the lineage cell depletion kit (130-090-858, Miltenyi).
For isolation of LT-HSCs, identified as Lin-Sca-1+c-kit+ CD150+CD48-, Lin- cells were incubated with a mixture of biotin-labeled lineage antibody cocktail against CD3, CD11b, CD19, B220, Gr-1 and Ter119 (51-09082J, BD Pharmingen), and fluorochrome conjugate antibodies PE-Cy7-Sca (Clone D7, 558162, BD Biosciences), APC-c-kit (Clone ACK2, 135108, BD Biosciences), Pacific Blue-CD150 (Clone TC15-12F12.2, 115924, Biolegend) and APC-Cy7-CD48 (Clone HM48-1, 47-0481-82, e-Bioscience), followed by incubation with streptavidin-PE secondary antibody (554061, BD). LT-HSCs were sorted with a BD FACSAria cell sorter.
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3

Cell Cycle Analysis in Lymphoblast and HSC

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Cell cycle analysis in lymphoblast cell lines were thoroughly resuspended and fixed with ice-cold 70% ethanol and stored at −20 during 30 min. After fixation, cells were washed with PBS, stained with FxCycle PI/RNase staining solution (Invitrogen, F10797) and analyzed in a CytoFlex 5 Flow Cytometer (Beckman Coulter). Cell cycle analysis in mouse LT-HSC was performed using the cell surface markers PE-Cy7-Sca (Clone D7, 558162, BD Biosciences), APC-c-kit (Clone ACK2, 135108, BD Biosciences), FITC-CD150 (Clone A12 (7D4), 306306, Biolegend) and APC-Cy7-CD48 (Clone HM48-1, 470481-82, e-Bioscience), along with intracellular staining using PE-Cy7-Ki67 (350526, Biolegend) and DAPI (422801, Biolegend). Data analysis was performed using FlowJo software version 10.5.3.
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4

Isolation and Identification of Mouse LT-HSCs

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BM cells were harvested from tibia and femurs of mice by gentle flushing with HBSS++ buffer [Hanks balanced salt solution (10-547F, Lonza) + HEPES (BP299-100, Fisher Scientific) + Fetal bovine serum (F2442, Sigma) + penicillin-streptomycin (15140-122, GIBCO)]. Samples were filtered through a 70 μM filter and Lin- enrichment was performed using the lineage cell depletion kit (130-090-858, Miltenyi). LT-HSCs were recognized by being LSK (Lin-Sca-1+c-Kit+) and CD150+CD48- using PE-Cy7-Sca (Clone D7, 558162, BD Biosciences), APC-c-kit (Clone ACK2, 135108, BD Biosciences), Pacific Blue-CD150 (Clone TC15-12F12.2, 115924, Biolegend) and APC-Cy7-CD48 (Clone HM48-1, 47-0481-82, e-Bioscience).
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