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5 protocols using anti cd105 apc

1

Identification and Characterization of GA-MSCs

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For the identification of GA-MSCs, flow cytometry and induced differentiation were performed as we described previously [14 (link)]. In brief, GA-MSCs were collected and stained with fluorochrome-conjugated antibodies, including anti-CD105-APC, anti-CD90-PerCP, anti-CD73-APC/Cy7, anti-CD44-FITC, anti-CD133-APC and anti-CD34-APC (all from eBioscience. USA) in the dark at 4 °C for 30 min. Then, the cells were centrifuged, resuspended and analyzed using a FACS flow cytometer (BD FACSCanto2, Biosciences). The data were collected and analyzed using FlowJo software (v10.6.2). GA-MSCs were differentiated into osteocytes, adipocytes, and chondrocytes by using ready-to-use differentiation media (all from Cyagen, China) following the manufacturer’s instructions. Adipogenic differentiation was evaluated by Oil Red O staining, osteogenic differentiation was evaluated by Alizarin Red staining, and chondrogenic differentiation was evaluated by Alcian Blue staining. The stain results were observed with an inverted phase contrast microscope (Olympus IX73), and photographs were taken with a digital camera using Image-Pro Plus 6.0 software.
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2

Comprehensive Antibody Panel for Cell Characterization

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Primary antibodies for FACS were anti-CD73-PE (550741, 1:100), anti-CD90-FITC (555595, 1:200) from Biosciences and anti-CD105-APC (17-1057, 1:100) from eBioscience. Primary antibodies for Western blot were anti-WRN (sc-5629, 1:500), anti-β-Actin (sc-130301, 1:3,000), anti-β-Tubulin (sc-5274, 1:3,000) from Santa Cruz Biotechnology, anti-P21 (2947, 1:2,000), anti-HP1γ (2619, 1:1,000) from Cell Signaling Technology, anti-LAP2β (611000, 1:2,000) and anti-P16 (4828, 1:200) from BD Bioscience. Antibodies for immunofluorescent staining were anti-hSMA (ZM-0003) from ZSGB-Bio, anti-Progerin (sc-81611, 1:50), anti-Lamin A/C (sc-7293, 1:200) from Santa Cruz Biotechnology, anti-HP1γ (2619, 1:500) from Cell Signaling Technology, anti-53BP1 (A300-273A, 1:500) from Bethyl Laboratories, anti-γ-H2AX (05-636, 1:500) from Millipore, anti-LAP2β (611000, 1:500), anti-hCD31 (555445, 1:200) from BD Bioscience, and anti-Ki67 (VP-RM04, 1:1,000) from Vector.
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3

Characterization of Pluripotent Stem Cells

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MSCs isolated from Bichat fat pads of different patients, were analyzed by flow cytometry for the expression of two markers that characterized this sub-population of stem cells defined as pluripotent. The antibodies employed to perform analysis were an anti-SEEA3-AF488 (eBiosciences; dilution used 1:1000) and an anti-CD105-APC (eBiosciences; dilution used 1:1000). Cells were incubated at 4°C for 30 min in PBS solution with each antibody and then washed by centrifugation and resuspension in fresh PBS. Isotype controls (Rat IgM Isotype Control Alexa Fluor 488 and Mouse Ig1K Isotype Control APC) were used to exclude the not specific binding and were diluted 1:1000.
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Derivation and Characterization of hMSCs from hESCs

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hMSCs were derived from hESCs as described previously (Pan et al., 2016 (link)). In brief, embryoid bodies (EBs) first formed from hESC clones in an ultralow attachment 6-well plate (Corning) in low FGF-2 hESC medium and then were transferred to a plate coated by Matrigel in hMSC differentiation medium (hMSC culture medium supplemented with additional 9 ng/mL FGF-2 and 5 ng/mL TGF-β (HumanZyme)). After 7 to 10 days, the cells became confluent and were reseeded into dishes coated by gelatin in hMSC culture medium. CD73, CD90 and CD105 tri-positive cells were sorted as hMSCs with the aid of flow cytometry. The following antibodies were used: anti-CD73-PE (BD Biosciences, 550257), anti-CD90-FITC (BD Biosciences, 555595) and anti-CD105-APC (eBioscience, 17-1057-42). The differentiation abilities of hMSCs were tested by futher differentiation into chondrocytes, adipocytes and osteoblasts (Liu et al., 2014 (link)) detected by toluidine blue (chondrocytes), oil red O (adipocytes) and von Kossa (osteoblasts) staining, respectively.
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5

Phenotypic Characterization of gb-MSCs

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Flow cytometry analysis was performed using fluorochrome-conjugated antibodies. Briefly, subconfluent gb-MSCs were cultured in flasks with serum-free medium (0% DMEM), standard medium containing 10% FBS (10% DMEM), serum-free glioblastoma-conditioned medium (0% gb-CM) and standard glioblastoma-conditioned medium(s-gb-CM) for 72 h. The cells were trypsinized and collected in PBS. After centrifugation, the resuspended cells were stained with fluorochrome-conjugated antibodies, including anti-CD31-PE/Cy7, anti-CD34-FITC, anti-CD73-APC/Cy7, anti-CD90-PE/Cy7, anti-CD14-percp, anti-CD105-APC and anti-CD44-APC/Cy7 (all from ebioscience. USA) as well as anti-PDGFR-β-PE (R&D, USA) in the dark at 4°C for 30 min. Then, the cells were centrifuged, resuspended in PBS and analyzed using a FACS flow cytometer (BD Biosciences). The data were collected and analyzed using FlowJo (TreeStar, Ashland, OR) software.
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