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Mycoplasma detection kit

Manufactured by Lonza
Sourced in Switzerland, United States

The Mycoplasma Detection Kit is a laboratory equipment product designed to detect the presence of Mycoplasma, a type of bacteria, in cell cultures. The kit provides a reliable and efficient method for monitoring and ensuring the absence of Mycoplasma contamination in research and biopharmaceutical applications.

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90 protocols using mycoplasma detection kit

1

Cultivation of Prostate Cancer Cells

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Human prostate adenocarcinoma PC3, derived from bone metastasis, and LNCaP, derived from lymph node metastasis, cells were purchased from the Korean Cell Line Bank. Cells were cultured in RPMI-1640 medium (Thermo Fisher Scientific) containing 10 mM D-glucose supplemented with 10% FBS (ATCC) and 1% penicillin/streptomycin in a 5% CO2 incubator at 37 °C. For mitogen stimulation, cells were serum-deprived for 24 h and treated with or without 10% FBS for 6 h. All cells were routinely tested for negative mycoplasma contamination using Mycoplasma Detection Kit (Lonza).
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2

Ovarian Cancer Cell Lines Characterization

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The human ovarian cancer cell lines: MCAS and OVSAHO (JCRB cell bank, Osaka, Japan, catalog no. JCRB0240 and no. JCRB1046 respectively) were kindly provided by Prof. Aikou Okamoto (Jikei University School of Medicine, Japan), in 2016. The cisplatin sensitive A2780 (The European Collection of Authenticated Cell, ECACC catalog no. 93112519) and cisplatin-resistant A2780-cis (ECACC catalog no. 93112517) cell lines were a generous gift from Dr. Benjamin Tsang (University of Ottawa, Canada), in 2018. The transformed normal epithelial ovarian cell line HOSE6–3 (RRID: CVCL_7673), established by Prof. GSW Tsao (School of Biomedical Sciences, The University of Hong Kong), was kindly provided by his laboratory in 2018. To avoid contaminations, our cell-culture laboratories, including hoods and incubators, are systemically fumigated every year, and any new cells are tested upon arrival, for the presence of mycoplasma using the “Mycoplasma Detection Kit” (Lonza, Catalog #: LT07–118). None of the cells used for this study were tested positive.
MCAS, A2780, A2780 cis and HOSE6–3 cells were propagated in DMEM (Gibco, NY, USA), while OVSAHO was cultured in RPMI-1640 media supplemented with 10% FBS (Gibco, NY, USA) and 1% penicillin-streptomycin antibiotic (Gibco, NY, USA) in a humidified incubator at 37 °C and 5% CO2.
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3

Isolation and Characterization of Glioblastoma Neurospheres

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Normal human neural progenitor cells (NHNP) were obtained from Lonza (Martinez et al., PT-2599) and GBM-derived neurosphere cells were isolated and characterized from glioblastoma patient samples and designated as N08-30, N08-74, N09-32, N12-115, N12-159 and N13-213, as described previously (Chen et al., 2014 (link); Mukherjee et al., 2016 ). Both the N12-159 and N13-213 harbor chromosome 10q (PTEN) loss but have no EGFR amplification. N08-30 has both EGFR amplification and 10q (PTEN) loss. The diagnosis of GBM was established by senior neuropathologist (DJB) in accordance to WHO criteria. The stem cell phenotype of neurospheres was confirmed by stem cell marker expression, the neurosphere self-renewal assay, and degree of differentiation. Mycoplasma was tested using Lonza Mycoplasma Detection Kit (company and city, LT07-703). GBM-derived neurosphere cells and NHNP cells were cultured in Neurobasal-A Media (Invitrogen) with the growth factors, FGF, EGF, and heparin as described previously (Mukherjee et al., 2016 ).
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4

Culture of Human Pancreatic Cell Lines

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Human pancreatic duct epithelial cell lines H6c7, pancreatic carcinoma cell lines PANC-1 and SW-1990 (ATCC) were cultured in RPMI-1640 medium (Gibco) containing 10 mM D-glucose supplemented with 10% FBS (Gibco) and 1% penicillin/streptomycin in a 5% CO2 incubator at 37°C. All cell lines were routinely tested for negative mycoplasma contamination using Mycoplasma Detection Kit (Lonza).
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5

Gallbladder Cancer Cell Line Culturing

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We used 5 GBC cell lines: TGBC2TKB, NOZ [25 (link)], GBd15 [26 (link)], TYGBK-1 [27 (link)], and TYGBK-8. TGBC2TKB was purchased from Riken Cell Bank (Tsukuba, Japan). NOZ, TYGBK-1, and TYGBK-8 were purchased from the Japanese Collection of Research Bioresources (JCRB) bank. All cell lines were cultured according to the supplier's specifications. There was no mycoplasma contamination in any of the cell lines with mycoplasma detection kit (Lonza, Basel, Switzerland). For normoxic conditions, cells were cultured in 5% CO2 and 95% air and for hypoxic conditions, cells were cultured in 1% O2, 5% CO2, and 94% N2, in a multigas incubator (Sanyo, Tokyo, Japan).
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6

Culture of MNK-1, NKL, and KHYG-1 Cells

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MNK-1 cells40 (link) were cultured in DMEM supplemented with 10% FBS, 2 mM GlutaMAX, 1 mM sodium pyruvate, 55 μM 2-mercaptoethanol, 10 mM HEPES, 50 μg/ml gentamicin, 100 U/ml penicillin, and 100 μg/ml streptomycin (all from Corning or Gibco Life Technologies, except FBS from Atlanta Biologicals). To facilitate robust survival, 10 ng/ml recombinant mouse IL-2 (BioLegend) were re-applied daily. NKL cells41 (link) and KHYG-1 cells42 were cultured in RPMI 1640 medium supplemented with 2 mM L-glutamine, 1 mM sodium pyruvate, 100 U/ml penicillin, 100 μg/ml streptomycin and 7.5% FCS plus 7.5% new born calf serum (all from Corning or Gibco Life Technologies, except FBS from Atlanta Biologicals). The cell concentration was maintained at ~5 × 105 /ml in the presence of 50 U/ml of recombinant human IL-2 (Amgen). All cell lines routinely tested negative for mycoplasma contamination using the Mycoplasma Detection Kit (Lonza) and maintained in medium containing plasmocin (Invivogen) for prophylactic purpose.
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7

Culture of MNK-1, NKL, and KHYG-1 Cells

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MNK-1 cells40 (link) were cultured in DMEM supplemented with 10% FBS, 2 mM GlutaMAX, 1 mM sodium pyruvate, 55 μM 2-mercaptoethanol, 10 mM HEPES, 50 μg/ml gentamicin, 100 U/ml penicillin, and 100 μg/ml streptomycin (all from Corning or Gibco Life Technologies, except FBS from Atlanta Biologicals). To facilitate robust survival, 10 ng/ml recombinant mouse IL-2 (BioLegend) were re-applied daily. NKL cells41 (link) and KHYG-1 cells42 were cultured in RPMI 1640 medium supplemented with 2 mM L-glutamine, 1 mM sodium pyruvate, 100 U/ml penicillin, 100 μg/ml streptomycin and 7.5% FCS plus 7.5% new born calf serum (all from Corning or Gibco Life Technologies, except FBS from Atlanta Biologicals). The cell concentration was maintained at ~5 × 105 /ml in the presence of 50 U/ml of recombinant human IL-2 (Amgen). All cell lines routinely tested negative for mycoplasma contamination using the Mycoplasma Detection Kit (Lonza) and maintained in medium containing plasmocin (Invivogen) for prophylactic purpose.
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8

Investigating NSCLC Cell Line Responses

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All drugs were purchased from Selleck Chemicals (Houston, TX) and prepared as 10 mmol/l stock solutions in dimethyl sulfoxide. Predesigned sets of four independent siRNA sequences of the target genes Plk1 and MET (siGENOME SMARTpool; Dharmacon, Lafayette, CO) were used. Human TGF‐β1 was purchased from Cell Signaling Technology (Danvers, MA). Human fibronectin was purchased from Sigma‐Aldrich (St. Louis, MO). Constitutive active TPR‐Met plasmid and control pBABE plasmid were obtained from Addgene (Cambridge, MA). Antibodies and dilutions used in the study are listed in Appendix Table S3. The HGF neutralizing monoclonal antibody (24612.111) was acquired from Invitrogen (Catalog # MA1‐24767, Thermo Fisher Scientific, Waltham, MA).
Human NSCLC cell lines were obtained, maintained, and genotyped by STR profiling as previously described (Ferrarotto et al, 2016; Peng et al, 2016) and routinely tested for the presence of mycoplasma species using the Mycoplasma Detection Kit (Lonza, Basel, Switzerland).
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9

Establishing Cell Culture Conditions for Breast Cancer Research

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Unless indicated, cell lines were cultured in DMEM/10% fetal bovine serum (FBS)/2mM L-glutamate/1% penicillin-streptomycin. MCF10CA1d cells (16 (link),17 (link)) were kindly provided by Fred Miller, Ph.D (University of Michigan). BT-20 and HCC1937 cells were kindly provided by Roy Jensen, M.D (University of Kansas Medical Center). 4T1 cells were purchased from ATCC (cat# 2539). BT-20 cells were cultured in Eagle’s Minimal Essential Medium/10%FBS/2mM L-glutamate/1% penicillin-streptomycin. HCC1937 cells were cultured in RPMI/10% FBS/2mM L-glutamate/1% penicillin-streptomycin. Human cancer associated fibroblasts and normal adjacent fibroblasts were isolated from invasive breast carcinoma tissues obtained from University of Kansas Medical Center Biospecimen Repository, using approaches described (18 ). For CCL2 knockout, fibroblasts were first immortalized by transfection of hTert, using approaches described (19 (link)). Fibroblasts were isolated from MMTV-PyVmT transgenic mice or tumor free mice (C57BL/6xFVB) as described (15 (link),18 ). Cell lines were cultured less than 3 months at a time and checked for mycoplasma after freeze/thaw, using the Mycoplasma Detection Kit (Lonza, cat# LT07–703).
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10

Murine models for cancer research

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Female C57BL/6J (6- to 8-week-old) mice and BALB/C-nu/nu mice were purchased from Joint Ventures Sipper BK Experimental Animal Co (Shanghai, China). Faslpr and Faslgld mice were purchased from the Jackson Laboratory (Farmington, CT, USA). Il9r−/−60 (link) mice were kindly provided by Dr. Jean-Christophe Renauld (Université Catholique de Louvain, France). Mice were housed in a specific pathogen-free facility, and experimental protocols were approved by the Animal Care and Use Committee of the School of Medicine, Zhejiang University. Murine B16F10 tumor cells and HEK293 cells were obtained from the American Type Culture Collection (Manassas, VA, USA). B16F10-OVA and LLC-OVA cells were provided by Dr. Qibin Leng (University of Chinese Academy of Sciences, Shanghai, China) and Wei Yang (Southern Medical University, Guangzhou, Guangdong, China), respectively. B16F10 and B16F10-OVA cells were cultured in Dulbecco’s modified Eagle’s medium (DMEM) supplemented with 10% (v/v) fetal calf serum (Lonza, Basel, Switzerland). LLC-OVA and HEK293 cells were cultured in RPMI-1640 medium supplemented with 10% fetal calf serum. All cells were routinely tested for mycoplasma contamination using the Mycoplasma Detection Kit (Lonza) and were found to be negative.
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