About the Authors

Michael Lohmann

Affiliation Department for Stem Cell Biology and Cellular Engineering, Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University Medical School, Aachen, Germany

Gudrun Walenda

Affiliation Department for Stem Cell Biology and Cellular Engineering, Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University Medical School, Aachen, Germany

Hatim Hemeda

Affiliation Department for Stem Cell Biology and Cellular Engineering, Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University Medical School, Aachen, Germany

Sylvia Joussen

Affiliation Department for Stem Cell Biology and Cellular Engineering, Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University Medical School, Aachen, Germany

Wolf Drescher

Affiliation Department for Orthopedics, RWTH Aachen University Medical School, Aachen, Germany

Stefan Jockenhoevel

Affiliation Department of Applied Medical Engineering, Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany

Gabriele Hutschenreuter

Affiliation Institute for Transfusion Medicine, RWTH Aachen University Medical School, Aachen, Germany

Martin Zenke

Affiliations Department for Stem Cell Biology and Cellular Engineering, Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University Medical School, Aachen, Germany, Institute for Biomedical Engineering – Cell Biology, RWTH Aachen University Medical School, Aachen, Germany

Wolfgang Wagner

wwagner@ukaachen.de

Affiliation Department for Stem Cell Biology and Cellular Engineering, Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University Medical School, Aachen, Germany

Competing Interests

Wolfgang Wagner is a PLoS ONE Editorial Board member. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: ML GW WW. Performed the experiments: ML HH SJ. Analyzed the data: ML GW HH SJ MZ WW. Contributed reagents/materials/analysis tools: WD GH. Wrote the paper: ML GW WW.