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Mda mb 231 breast cancer cells

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MDA-MB-231 breast cancer cells are a well-established cell line derived from a human breast adenocarcinoma. They are commonly used in cancer research.

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59 protocols using mda mb 231 breast cancer cells

1

Cell Culture Protocol: NIH/3T3 and MDA-MB-231

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NIH/3T3 mouse fibroblast cells (ATCC) were grown in DMEM supplemented with 10% calf serum, sodium pyruvate and penicillin/streptomycin (Invitrogen) at 37 °C, 5% CO2. MDA-MB-231 breast cancer cells (ATCC) were grown in Leibovitz’s L15 media supplemented with 10% fetal bovine serum and penicillin/streptomycin at 37 °C in atmospheric air. Cell lines have been tested yearly for mycoplasma and are free of contamination.
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2

Co-culture of Breast Cancer Cells and ASCs

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For co-culture experiments, hydrogels containing MDA-MB-231 breast cancer cells (ATCC, Manassas, VA, USA) were printed on top of the ASC-laden constructs after 21 days of adipogenic culture. MDA-MB-231 breast cancer cells were expanded in growth medium composed of DMEM (1 g/L glucose, Life Technologies) supplemented with 10% FBS, 1% L-glutamine, 1% MEM non-essential amino acids solution, 1% sodium pyruvate, 0.6% HEPES, and 1% penicillin/streptomycin (all Life Technologies). After harvesting, MDA-MB-231 cells at passage 6 were suspended in hyaluronic acid-based hydrogel precursor solution and printed at 1 bar as described above. Before transferring the suspension into the glass rings for UV irradiation (see above), differentiated ASC spheroid-laden hydrogels were put at the bottom inside the glass ring. The hydrogel–cancer cell suspension was then dispensed on top and UV-crosslinked at 365 nm for 10 min. The resulting co-culture hydrogels (bottom: adipogenically differentiated ASC spheroids, top: MDA-MB-231 cells) were cultured for 9 days in maintenance medium consisting of DMEM/F12, 10% fetal bovine serum, 1.7 µM insulin, and 1% penicillin/streptomycin. Samples were harvested at d0 and d9. Double gels with either empty top or bottom compartment (only ASC spheroids at the bottom or only MDA-MB-231 at the top) served as monoculture controls.
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3

Culturing Diverse Cancer Cell Lines

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EO771 mammary tumor cells (CH3 BioSystems, Amherst, NY, USA) (35 (link)), 4T1.2 mammary tumor cells (36 (link)), MDA-MB-231 breast cancer cells (ATCC, Manassas, VA, USA), MDA-MB-231-derived cell line, TMD cells (37 (link)), PC-3 human prostate cancer cells (ATCC) (38 (link)), PANC-1 human pancreatic cancer cells (ATCC) (39 (link)), and GnRH mouse hypothalamic neuronal cells (GT1–7; Sigma, Saint Louis, MO, USA) were grown in DMEM (Corning, Inc., Corning, NY, USA). The culture media were supplemented with 10% fetal bovine serum and antibiotics (50 units/ml penicillin, and 50 μg/ml streptomycin, Gibco, Logan City, UT, USA).
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4

Cell Culture Conditions for HT1080 and MDA-MB-231

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HT1080 fibrosarcoma cells (ATCC) were cultured in Eagle’s mimimum essential medium and MDA-MB-231 breast cancer cells (ATCC) were cultured in Dulbecco’s modified essential medium. Culture media were supplemented with 10% heat-inactivated FBS and 40 μg ml−1 gentamicin. Cells were cultured in a humidified atmosphere at 37 °C with 5% CO2 and 21% O2. For incubation under hypoxic conditions, cells were placed in an In Vivo2 400 hypoxia workstation (Ruskinn) under a humidified atmosphere of 1% O2 and 5% CO2. All cell lines were routinely tested for mycoplasma using the MycoSEQ Mycoplasma Detection Kit (Thermo Fisher Scientific).
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5

Cell Culture Conditions for Microscopy

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We cultured HEK 293T cells (Thermo Fisher Scientific, Carlsbad, CA), MDA-MB-231 breast cancer cells (ATCC), and HS-5 and HS-27A bone marrow stromal cells (ATCC) in Dulbecco's modified eagle's medium (Thermo Fisher Scientific) supplemented with 10% fetal bovine serum (FBS) (HyClone; GE HealthCare, Logan, UT). For microscopy, we replaced the culture medium with phenol red-free DMEM (Thermo Fisher Scientific) supplemented with 1% FBS, 0.1 nM estrogen, 1% penicillin/streptomycin, 1% pyruvate, and 2.5% glutamine unless stated otherwise. Cells were cultured at 37°C in an incubator with 5% CO2.
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6

Cell Culture and Maintenance Protocol

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DU145 prostate cancer (PCa) cells were purchased from ATCC (Manassas, VA). PPC1 PCa cells were originally obtained from Dr. Arthur Brothman [51 (link)]. Cells were maintained in 10% fetal bovine serum (FBS) (Gemini, West Sacramento, CA) RPMI (Cellgro, Manassas, VA). MDA MB 231 breast cancer cells were obtained from ATCC and cultured in DMEM (Cellgro) supplemented with 10% FBS. All cells were maintained in a 37°C incubator with 5% CO2. Cells were subcultured upon attaining 75% confluence.
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7

Culturing Breast Cancer Cell Lines

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MDA-MB-231 breast cancer cells (ATCC,
Manassas, VA, USA) and MCF-7 mammary tumor cells (ATCC, Manassas,
VA, USA) lentivirally transduced to constitutively express firefly
luciferase were cultured on standard tissue culture-treated polystyrene
in an incubator maintained at 37 °C and 5% CO2. Cells
were maintained in growth media consisting of Dulbecco’s modified
Eagle’s medium (DMEM; Gibco-Life Technology) supplemented with
10% fetal bovine serum (FBS; Gibco) and 50 μg/mL gentamicin
(Mediatech, Englewood, CO, USA).
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8

MDA-MB 231 Breast Cancer Cell Viability Assay

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MDA-MB 231 breast
cancer cells were purchased from ATCC (Manassas, VA). Cell culture
media and reagents were purchased from Invitrogen. 3-(4,5-Dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium
(MTS)-cell viability assay reagents were purchased from Promega. Cells
were cultured in high glucose DMEM containing 10% fetal bovine serum.
Cells were plated in 96-well microtiter plates at 5000 cells per well
and incubated for 2 h to allow for adherence. Where appropriate, pH
7.4 media was exchanged for pH 6.0 media adjusted with 1 M HCl to
determine PA cytotoxicity at acidic pH. After 2 h, 10 μL of
PA was added for the final appropriate concentrations. Cell viability
was measured after 48 h using an MTS cell viability assay and was
used according to the supplier’s instructions. Briefly, the
cell media was replaced after 48 h with a stock of 20% MTS solution
in pH 7.4 media. The plate was incubated for 1–3 h, and absorbance
was read using a Molecular Devices microplate reader (490 nm). Cell
viability was calculated as an absorbance percent relative to the
untreated cell control at the same pH. Experiments were performed
in triplicate.
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9

Cultivation of Human Dermal and Mammary Fibroblasts

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Normal human dermal fibroblasts (NHDFs) and Fibroblast Growth Medium containing 2% fetal calf serum (FGM), insulin (5μg/mL) and FGF-2 (1ng/mL) were obtained from PromoCell (http://www.promocell.com/) and cells were cultured as specified by the supplier. Human Primary Mammary Fibroblasts (HPMFs), HPMF growth media (HPMF-GM), the Fibroblast Medium Supplement Kit (FBS, hydrocortisone, L-glutamine, FGF and an antibiotic-anti-mycotic solution) and gelatin coating solution were obtained from Cell Biologics (http://www.cellbiologics.net). HPMF cells were cultured in HPMF-GM with the added supplements for 6–7 passages as specified by the supplier. MDA-MB-231 breast cancer cells were obtained from ATCC and cultured for 12–15 passages in MCF media. MCF medium is DMEM/F12 (Life Technologies, Carlsbad, CA) supplemented with 5% horse serum, human recombinant EGF, insulin, hydrocortisone and cholera toxin, all obtained from Sigma Aldrich (St. Louis, MO), and penicillin-streptomycin from Thermo -Fisher (Grand Island, NY) [21 (link)]. GFP tagged human dermal fibroblasts (NHDFs-GFP) were obtained from Angio-proteomie (www.angioproteomie.com) and cultured according to the supplier’s directions.
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10

Intracellular Localization of Quantum Dots

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For intracellular localization of QDs, QD-Ce6 complexes and Ce6, MDA-MB-231 breast cancer cells (ATCC, USA) were seeded on a Nunc LabTek II chamber slide (Thermo Fisher Scientific, Waltham, MA, USA) at a density of 25,000 cells per well using standard cell culture medium (Dulbecco’s modified Eagle’s medium (DMEM), 10% fetal bovine serum (FBS), 1% penicillin/streptomycin antibiotic mix (all from Gibco, Waltham, MA, USA). Upon cell attachment, cells were treated with serum-free cell medium containing 10 nM of either different P-QDs or L-QDs or their QD-Ce6 complexes for 24 hours. In addition, 1 μM Ce6 solution was used as a control. Samples for confocal microscopy were prepared as previously described [22 (link)]. Briefly, cells were fixed with 4% paraformaldehyde solution (Sigma Aldrich, USA) and permeabilized with 0.2% Triton-X 100 (Sigma Aldrich, St. Louis, MO, USA). Actin filaments were stained with 15 U/mL Alexa Fluor 488 Phalloidin (Thermo Fisher Scientific, Waltham, MA, USA) and 25 μg/mL Hoechst 33342 (Sigma Aldrich, St. Louis, MO, USA) was used to label nuclei.
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