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26 protocols using u2os htb 96

1

Cultivation of Human Osteosarcoma Cell Lines

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Three human osteosarcoma cell lines, Saos-2 (HTB-85), MG-63 (CRL-1427), and U2OS (HTB-96) were procured from ATCC (Manassas, USA). Saos-2 and U2OS cells were cultivated in McCoy’s 5A Medium (30–2007, ATCC) and added with 10% FBS (Gibco, Waltham, USA). MG-63 cells were cultivated in Eagle’s Minimum Essential Medium (EMEM, 30–2003, ATCC) and added with 10% FBS (Gibco). Normal human osteoblast hFOB1.19 (CRL-11372) was procured from ATCC and cultivated in a 1:1 mixture of Ham’s F12 Medium Dulbecco’s Modified Eagle’s Medium (ATCC) containing 10% FBS (Gibco). All cell types were cultivated at 37°C in a humidified atmosphere containing 5% CO2.
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2

Mycoplasma-free Cell Line Authentication

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U2OS (HTB-96) and HEK293T (CRL-11268) were purchased from ATCC and HeLa were authenticated using Short Tandem Repeat (STR) analysis by ATCC services (100% match). All the cells lines used were uninfected with Mycoplasma, as routinely verified using the e-Myco Mycoplasma kit from FroggaBio.
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3

Comprehensive Antibody Validation Protocol

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Antibodies used are anti-LexA (06-719, Millipore), anti-Myc 9E10 (MMS-150P, Covance), anti-Flag M2 (A8592, Sigma Aldrich), anti-GFP (632592, Clontech), anti-Actin (A2066, Sigma Aldrich), anti-HOIP (MAB8039, R&D systems), anti-RBCK1/HOIL-1L (HPA024185, Sigma Aldrich). Anti-Phospho-IκBα (2859), anti-IκBα (4814), anti-Phospho-p65 (3033), anti-p65 (8242), anti-TRADD (3684), anti-TRAF2 (4712), anti-IKKα (11930), anti-TNF-R1 (3736) and anti-TAK1 (4505) were purchased from Cell Signaling. Anti-IKBKG/NEMO antibodies were purchased from Sigma Aldrich (SAB1404591) and Millipore (05-631).
Cell lines used in this study HEK293T (CRL-3216), HeLa (CCL-2), CaCo-2 (HTB-37) and U2OS (HTB-96) were purchased from ATCC. Parental cell lines were tested and determined to be mycoplasma free.
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4

Comprehensive Cell Line Cultivation Protocol

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MDA-MB-231 (HTB-26), HCT-116(CCL-247), LnCaP (Clone FGC, CRL-1740), RH30 (CRL-2061), SJSA (CRL-2098), HOS (CRL-1543), SAOS2 (HTB-85) and U2-OS (HTB-96) cells were purchased from ATCC (Manassas, VA). MCF-7 (86012803) was purchased from Sigma Aldrich (St. Louis, MO). CF-1 is a cell culture isolated from an 18 month old male presenting with alveolar rhabdomyosarcoma (22 ). PCB-204 is a cell culture isolated from the high-grade, extra-skeletal osteosarcoma of a 33 year old male (23 ). MCF-7 and MDA-MB-231 were cultured in DMEM media (Thermo Fisher, MA, 11995073) supplemented with 10% fetal bovine serum (Thermo Fisher, 10437036) and 1% penicillin/ streptomycin (Thermo Fisher, 15140112). All other human cells were cultured in complete RPMI media (Thermo Fisher, 11875119) supplemented with 10% fetal bovine serum and 1% penicillin/streptomycin. 61323 is an osteosarcoma cell culture isolated from a tumor arising from an Osx1-Cre, Trp53−/−, Rb1−/− genetically engineered mouse as previously characterized (24 (link)). 61323 was cultured in DMEM media supplemented with 10% fetal bovine serum and 1% penicillin/ streptomycin. All human cell cultures were authenticated using short tandem repeat analysis performed by the University of Arizona Genetics Core (Tuscon, AZ).
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5

Characterization of Cell Lines for Research

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HEK293 (CRL-1573), HepG2 (HB-8065), and U2OS (HTB-96) cells were purchased from ATCC. Human skin fibroblasts HSFs (F2-S) and primary MEFs were prepared as described previously (Liu et al., 2005 (link)). Immortalized Atm-/-; p53-/- and Sirt6-/- MEFs were provided as a kind gift from Dr. Yosef Shiloh (Tel Aviv University, Israel) and Dr. Raul Mostoslavsky (Massachusetts General Hospital Cancer center, USA), respectively. These cell lines were authenticated by short tandem repeat (STR) profile analysis and genotyping, and were mycoplasma free. Cells were cultured in Gibco DMEM (Life Technologies, USA) with 10% fetal bovine serum (FBS), 100 U/ml penicillin and streptomycin (P/S) at 37°C in 5% CO2 and atmospheric oxygen conditions. For CQ experiments, cells were maintained in the medium containing 1 μM chloroquine for 12 hr, and then grown in new fresh medium for 48 hr.
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6

Generation of Isogenic Sarcoma Cell Lines

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To generate Atrx isogenic mouse sarcoma cell lines, pSP Cas9(BB)-2A-GFP (PX458) with Atrx gRNA or vector control were transfected into newly derived primary soft tissue sarcoma cell lines (KP) using the TransIT-LT1 transfection reagent (Mirus). Cell lines from transfected single-cell clones were then screened for loss of ATRX protein expression by Western blot. Antibodies used for Western blot and immunofluorescence are listed in Supplemental Table 1. To generate human sarcoma cell lines, 143B cells were purchased (ATCC, CRL8303) and an identical procedure was performed, except the gRNA in the PX458 vector was targeted to the human ATRX gene. Passaging of sarcoma cell lines was performed in DMEM (Thermo Fisher Scientific) supplemented with 10% FBS (Thermo Fisher Scientific), 1% Pen-Strep (Thermo Fisher Scientific), and 1% L-glutamine (Thermo Fisher Scientific). Cell lines were incubated at 37°C with 5% CO2 in a humidified cell culture incubator. U2OS (HTB-96) and 143B (CRL-8303) cell lines were purchased from ATCC.
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7

Comprehensive Antibody Validation Protocol

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Antibodies used are anti-LexA (06-719, Millipore), anti-Myc 9E10 (MMS-150P, Covance), anti-Flag M2 (A8592, Sigma Aldrich), anti-GFP (632592, Clontech), anti-Actin (A2066, Sigma Aldrich), anti-HOIP (MAB8039, R&D systems), anti-RBCK1/HOIL-1L (HPA024185, Sigma Aldrich). Anti-Phospho-IκBα (2859), anti-IκBα (4814), anti-Phospho-p65 (3033), anti-p65 (8242), anti-TRADD (3684), anti-TRAF2 (4712), anti-IKKα (11930), anti-TNF-R1 (3736) and anti-TAK1 (4505) were purchased from Cell Signaling. Anti-IKBKG/NEMO antibodies were purchased from Sigma Aldrich (SAB1404591) and Millipore (05-631).
Cell lines used in this study HEK293T (CRL-3216), HeLa (CCL-2), CaCo-2 (HTB-37) and U2OS (HTB-96) were purchased from ATCC. Parental cell lines were tested and determined to be mycoplasma free.
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8

Inducible Expression of Fluorescent Proteins in Cell Lines

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MEFs were isolated from 13.5-dpc (day post coitum) embryos of wild-type mice. MEFs were stocked and cultured for maximum of five passages. HeLa (CCL-2) and U2OS (HTB-96) cell lines were purchased from ATCC (American Type Culture Collection, Manassas, VA, USA). HeLa tet-on cell line was purchased from Clontech (Seoul, Rep. of Korea). HeLa, HeLa tet-on and MEFs were cultured in Dulbecco's modified Eagle's medium (Dulbecco's modified Eagle's medium (DMEM); WelGENE, Gyeongsan, Rep. of Korea) containing 10% fetal bovine serum (FBS; Hyclone, Logan, UT, USA). U2OS cells were cultured in RPMI 1640 (WelGENE) containing 10% FBS. To generate HeLa cells inducibly expressing GFP or GFP-BEX4 proteins, HeLa tet-on cells were transfected with pTRE2hyg-GFP or pTRE2hyg-GFP-BEX4. Colonies showing resistance to hygromycin (20 μg/ml) were clonally isolated. GFP and GFP-BEX4 proteins were induced by treating cells with doxycycline (2 μg/ml) for 24 h.
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9

Cell Culture Protocols for Standard Cell Lines

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HeLa (CCL2, ATCC), U2OS (HTB-96, ATCC) and HEK293T (CRL3216, ATCC) cell lines were purchased from ATCC (American Type Culture Collection, VA, USA). Short tandem repeat (STR) testing was performed to confirm cell identity. These cells were cultured in Dulbecco’s Modified Eagle Medium (C11995500BT, GIBCO) supplemented with 10% fetal bovine serum (10270-106, GIBCO) and incubated at 37 °C and 5% CO2 in a constant temperature incubator. Cell passaging was performed at a 1:3 split ratio when the cells reached 90% confluence.
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10

Plasmid and siRNA Transfection in HeLa, U-2 OS, and MRC-5 Cells

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HeLa cells (CCL-2) and U-2 OS (HTB-96) cells were purchased from ATCC. HeLa and U-2 OS cells were maintained in Eagle’s minimal essential medium (ATCC) and McCoy’s 5A medium (ATCC), respectively, with 10% FBS (Corning) and 1× penicillin/streptomycin solution (Corning). MRC-5 fibroblasts were kindly provided by Dr. Evan Reid and cultured in DMEM (Thermo Fisher Scientific) supplemented with 10% FBS and 1× penicillin/streptomycin solution. For imaging experiments, DNA plasmids (15–50 ng) and siRNAs (∼20 nM) were transfected into HeLa cells with TransIT-LT1 reagent for 16–20 h and TransIT-TKO reagent for 64–68 h, respectively (Muris). For mEmerald-SKL or mCherry-SKL and siRNA cotransfection, HeLa cells were transfected simultaneously with 10 ng plasmid and 20 nM siRNA using both TransIT-LT1 and TransIT-TKO following the manufacturer’s instructions. For plasmids and siRNA transfection in Fig. 5, HeLa cells were first transfected with siRNA using TransIT-TKO for 48 h and subsequently transfected with 15 ng mEmerald-SKL and 50 ng mApple-M1 Spastin using TransIT-X2 for ∼16 h. U-2 OS and MRC-5 cells were transfected with 15–50 ng DNA plasmids using TransIT-X2.
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