Reproducibility warning: The curious case of polyethylene glycol 6000 and spheroid cell culture

• Simona Serrati,

  Roles Investigation

  Affiliation Nanotechnology Laboratory, IRCCS Istituto Tumori "Giovanni Paolo II", Bari, Italy

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• Chiara Martinelli,

  Roles Investigation

  Current address: Smart Bio-Interfaces, Istituto Italiano di Tecnologia, Pontedera (Pisa), Italy

  Affiliation IFOM-The FIRC Institute of Molecular Oncology, Milan, Italy

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• Antonio Palazzo,

  Roles Investigation

  Affiliation Nanotechnology Laboratory, IRCCS Istituto Tumori "Giovanni Paolo II", Bari, Italy

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• Rosa Maria Iacobazzi,

  Roles Investigation

  Affiliation Experimental Pharmacology Laboratory, IRCCS Istituto Tumori "Giovanni Paolo II", Bari, Italy

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• Mara Perrone,

  Roles Investigation

  Affiliation Nanotechnology Laboratory, IRCCS Istituto Tumori "Giovanni Paolo II", Bari, Italy

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• Quy K. Ong,

  Roles Investigation

  Affiliation Institute of Materials, Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne, Switzerland

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• Zhi Luo,

  Roles Investigation

  Affiliation Institute of Materials, Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne, Switzerland

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• Ahmet Bekdemir,

  Roles Investigation

  Affiliation Institute of Materials, Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne, Switzerland

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• Giulia Pinto,

  Roles Investigation

  Affiliation Department of Physics, University of Genoa, Genoa, Italy

  http://orcid.org/0000-0001-7007-6287

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• Ornella Cavalleri,

  Roles Resources, Visualization, Writing – review & editing

  Affiliation Department of Physics, University of Genoa, Genoa, Italy

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• Annalisa Cutrignelli,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Pharmacy- Pharmaceutical Sciences, University of Bari "Aldo Moro", Bari, Italy

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• Valentino Laquintana,

  Roles Methodology, Writing – review & editing

  Affiliation Department of Pharmacy- Pharmaceutical Sciences, University of Bari "Aldo Moro", Bari, Italy

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• Nunzio Denora,

  Roles Resources, Writing – review & editing

  Affiliation Department of Pharmacy- Pharmaceutical Sciences, University of Bari "Aldo Moro", Bari, Italy

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• Francesco Stellacci,

  Roles Methodology, Resources, Writing – review & editing

  Affiliations Institute of Materials, Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne, Switzerland, Interfaculty Bioengineering Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland

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• Silke Krol

  Roles Conceptualization, Methodology, Resources, Supervision, Writing – original draft, Writing – review & editing

  * E-mail: silke.krol@aol.com

  Affiliation Laboratory for personalized medicine, National Institute of Gastroenterology IRCCS "S. de Bellis" Research Hospital, Castellana Grotte, Bari, Italy

  http://orcid.org/0000-0003-3108-9821

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