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5 protocols using hl 60 atcc ccl240

1

Cell Line and Primary Cell Culture

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Human promyelocytic leukemia cells (HL60 ATCC CCL-240) and chronic myelogenous leukemia (K562 ATCC CCL-243) were purchased from ATCC and authenticated by STR repeats (Biosynthesis, Lewisville TX). Cell lines were grown in a maintenance medium culture: RPMI medium, supplemented with fetal bovine serum (20% in HL60, HMC and 10% in K562 cells), 1% penicillin-streptomycin, these were incubated at 37 °C in a humidified 5% CO2 atmosphere. The Human Mononuclear Cells (HMC) were obtained from hematologically normal patients undergoing orthopedic surgery. The procedures were performed at the Hematology Department, Medical Specialties Hospital, La Raza Medical Center IMSS, Mexico City, and the Hip Surgery Department, Villa Coapa Hospital, IMSS, Mexico City, respectively. The HMC were isolated using Ficoll Paque Plus (Pharmacia Biotech, Uppsala, Sweden). Cells were then resuspended in RPMI advanced medium and total numbers of nucleated and viable cells were determined with a hemocytometer, using Turck solution and trypan blue stain, respectively. HMC were collected according to institutional guidelines, including written informed consent from each donor.
All procedures were approved by the Ethics and Scientific Committee at IMSS with number R-2013-3602-6 (15 (link)).
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2

Isolation of Primary AML and Normal Bone Marrow Cells

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Primary AML cells were isolated from freshly collected bone marrow using Ficoll-PaqueTM PLUS (GE Healthcare Bio-Sciences AB, Uppsala, Sweden) according to the manufacturer’s instructions if the leukemia cells accounted for more than 90% of non-erythroid mononucleated cells of bone marrow. Normal bone marrow nucleated cells were harvested using Ficoll-PaqueTM PLUS from patients with treatment-naive non-Hodgkin’s lymphoma for whom bone marrow examination for lymphoma staging was performed but determined to be normal. All bone marrow samples were obtained under a protocol approved by the China Medical University Hospital internal review board (CMUH102-REC1-124 issued on 26 May 2014). Written informed consent was obtained from all patients in accordance with the Declaration of Helsinki. Human AML cell lines HL-60 (ATCC CCL-240) and THP-1 (ATCC TIB-202) were from American Type Culture Collection (ATCC, Manassas, VA, USA). All cells were incubated in RPMI-1640 media (Invitrogen, Carlsbad, CA, USA) supplemented with 10% heat-inactivated fetal bovine serum (FBS; Invitrogen) and penicillin (100 U/mL)/streptomycin (100 µg/mL) (Invitrogen) at 37 °C in the presence of 5% CO2.
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3

Culturing HL-60 Leukemia Cell Line

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The human promyelocytic leukemia cell line HL-60 (ATCC® CCL240™) was purchased from the American Type Culture Collection (ATCC, USA). HL-60 cells were commonly cultured in RPMI 1640 medium supplemented with 10% (v/v) fetal bovine serum containing 100 U/ml penicillin and 100 U/ml streptomycin at 37 °C in a humidified atmosphere with 5% CO2. All experiments were performed only when the cells were growing during the exponential phase.
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4

Leukemia Cell Line Maintenance and Inhibitor Studies

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HL-60 (ATCC CCL-240), K562
(ATCC CCL-243), CCRF-CEM (ATCC CRM-CCL-119), and RL (ATCC CRL-2261) leukemia cell lines were obtained from the American Type
Culture Collection (ATCC), Middlesex. HL-60 and K562 cell lines are
deoxynucleotidyl transferase-negative (TdT–ve),
whereas CCRF-CEM cell line is TdT+ve. They were cultured
in RPMI-1640 medium (Sigma-Aldrich, U.K.), which were supplemented
with 10% fetal bovine serum (FBS) (PAA Laboratories), 1% amphotericin
B (5.5 mL), and 1% penicillin/streptomycin (5.5 mL) (PAA Laboratories)
and grown in flasks at 37 °C in an incubator with 5% CO2. For the studies with inhibitors, the cells were treated with 10
μM nitrobenzylthioinosine (NBTI, hENT inhibitor) or 1 μM
EHNA (EHNA hydrochloride) or A-134974 (A-134974 dihydrochloride hydrate)
and left for 5 min before adding the drug. The cells were then incubated
for 2 h at 37 °C with 5% CO2.
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5

Cultivation and Characterization of Leukemia Cell Lines

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RPMI8226 (ATCC® CCL-155) myeloma cancer cells, HL60 (ATCC® CCL-240) promyelocytic leukemia cells and THP1 (ATCC® TIB-202) acute monocytic leukemia cells were purchased from American Type Culture Collection (ATCC, Rockville, USA). Peripheral Blood Mononuclear Cells (PBMC) were isolated from buffy coat obtained from the Central Blood Bank (Lodz, Poland). PBMCs were isolated with Histopaque 1077 (Sigma Aldrich) at density gradient by centrifugation at 300 × g for 15 min.
All investigated cells were grown as a monolayer with RPMI 1640 medium, 1% phytohemaglutinin (only in PBMCs growth medium) supplemented with 10% fetal bovine serum, penicillin (10 U/ml) and streptomycin (50 μg/ml), in standard conditions: 37 °C, 100% humidity, the atmosphere being 5% CO2 and 95% air. The cell viability was systematically controlled using trypan blue (0.4%, Sigma). In all experiments, cells in logarithmic phase of growth were used when their viability was above 95%.
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