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7 protocols using s11550

1

Clonal Mouse Mesenchymal Stromal Cells for Tissue Regeneration

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Clonally derived D1 mouse mesenchymal stromal cells (MSCs; American Type Cell Culture, CRL-12424) were used since they were used by a number of studies on cell-material interactions in the context of tissue regeneration [15 (link), 16 (link)]. Cells were cultured in complete high glucose Dulbecco’s Modified Eagle Media (DMEM; Thermo Fisher Scientific) supplemented with 10% fetal bovine serum (FBS; S11550, Atlanta Biologicals), 100 units/mL penicillin and 100 μg/mL streptomycin, and 2 mM GlutaMAX (Thermo Fisher Scientific). Cells were passaged when they reached 80% confluence in a 175 cm2 flask by detaching with trypsin-EDTA (Thermo Fisher Scientific). Passage numbers less than 15 were used for this study.
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2

Culture and Maintenance of TNBC Cell Lines

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The MDA-MB-231 and MDA-MB-157 human triple-negative breast cancer cell lines (HTB-26 and HTB-24, ATCC, Manassas, VA, USA). were grown in Dulbecco’s Modified Eagle Medium (DMEM; 11960-044, Thermo Fisher Scientific, Waltham, MA, USA), supplemented with 2 mM glutamine (MIR6240, Mirus, Madison, WI, USA), 10% fetal bovine serum (FBS; S11550, Atlanta Biologicals, Nashville, TN, USA), 10,000 IU/mL penicillin and 10,000 µg/mL streptomycin (25300-054, Thermo Fisher Scientific) at 37 °C, 5% CO2 in a humidified incubator. Cell lines were previously tested for mycoplasma contamination. Experiments were performed in phenol red-free DMEM (31053-028, Thermo Fisher Scientific) supplemented with 2 mM glutamine and 10% FBS, except as noted.
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3

Cultivation of Tick and Human Cell Lines

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I. scapularis embryonic cell lines ISE6 and IDE12 were cultured at 32°C with 1% CO2 in L15C-300 and L15C media, respectively. These growth media were supplemented with 10% heat-inactivated FBS (Sigma, F0926), 10% tryptose phosphate broth (TBP; BD, B260300), and 0.1% lipoprotein bovine cholesterol (LPBC; MP Biomedicals, 219147680)20 (link),95 (link).
HEK293 T cells were maintained in Dulbecco’s modified Eagle medium (DMEM; Sigma, D6429) supplemented with 10% heat-inactivated FBS (Atlanta Biologicals; S11550) and 1x Glutamax. Cells were maintained in T75 culture flasks (Corning; 353136) at 33°C or 37°C in 5% CO2.
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Isolation and Culture of Syncytialized Placental Cells

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PHT cells were isolated from term placentas using the Kliman method
22 (link) involving DNAse/trypsin digestion and purification on a Percoll gradient as previously described.
12 (link) Cells were plated at a density of 2 x 106 per well for amino acid uptake assays or 2.75 × 106 cells per well in a 6‐well dish for siRNA gene silencing and subsequent experiments. Cells were cultured in equal volumes of Ham's F‐12 and high glucose DMEM, 10% fetal bovine serum (FBS; S11550, Atlanta Biologicals, Lawrenceville, GA), and antibiotics (penicillin, gentamicin and streptomycin) in 5% CO2, 95% atmospheric air at 37°C for 90 h. Culture media was changed daily.
Syncytialized PHT cells were treated with OA for 24 h starting at 66 h after plating. Culture media was changed to 1% FBS supplemented with bovine serum albumin (BSA, AK8909, Akron) in a 1:3 ratio with OA (100 μM, Sigma catalog # O1383). We have reported previously that this concentration of OA did not negatively affect PHT cell viability.
18 (link) PHT cells were studied at 90 h after plating.
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5

Culturing Tick and Human Cell Lines

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I. scapularis embryonic cell lines ISE6 and IDE12 were cultured at 32°C with 1% CO2 in L15C-300 and L15C media, respectively. These growth media were supplemented with 10% heat-inactivated FBS (Sigma, F0926), 10% tryptose phosphate broth (BD, B260300) and 0.1% lipoprotein bovine cholesterol (MP Biomedicals, 219147680) (20 (link), 105 (link)).
HEK293 T cells were maintained in Dulbecco’s modified Eagle medium (DMEM; Sigma, D6429) supplemented with 10% heat-inactivated FBS (Atlanta Biologicals, S11550) and 1× Glutamax. Cells were maintained in T75 culture flasks (Corning, 353136) at 33°C or 37°C in 5% CO2.
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6

Isolation and Characterization of Mouse and Human Bone Marrow MSCs

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Clonally derived D1 mouse MSCs of bone marrow origin were purchased from American Type Cell Culture (ATCC, CRL-12424). Primary mouse bone marrow MSCs were derived from C57BL/6 J mouse donors (Cyagen, MUBMX-01001, 8- to 10-week-old male; mD1: from year 2018, mD2: from year 2019, mD3: from year 2021). Primary human bone marrow MSCs were derived by plastic adherence of mononucleated cells from human bone marrow aspirate donors (Lonza, 1M-105; hD1: 28-year-old male, hD2: 34-year-old male, hD3: 30-year-old male, hD4: 33-year-old male). All cells were cultured at 37 °C in 5% CO2. D1 and primary mouse MSCs were cultured in complete media composed of high-glucose Dulbecco’s modified Eagle medium (DMEM; Thermo) supplemented with 10% volume/volume (v/v) foetal bovine serum (FBS; S11550, Atlanta Biologicals), 100 units per ml penicillin–100 μg ml−1 streptomycin and 2 mM GlutaMAX (Thermo). Human MSCs were cultured in α-minimal essential medium (αMEM; Thermo) supplemented with 20% v/v FBS, 100 units per ml penicillin–100 μg ml−1 streptomycin and 2 mM GlutaMAX. Cells were passaged when they reached ~80% confluence in a 175 cm2 flask by detaching with trypsin-EDTA (Thermo). D1 mouse MSCs with passage number less than 13, primary mouse MSCs with passage number less than 10 and primary human MSCs with passage number less than 4 were used for this study.
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7

HeLa Cell Line Cultivation Protocol

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HeLa cell lines were purchased from ATCC. All cells were cultured at 37°C and 5.0% CO2 in Dulbecco’s modified Eagle medium (DMEM) (11995-065; Gibco) supplemented with 10% fetal bovine serum (FBS) (S11550; Atlanta Biologicals).
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