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Striking similarities between publications from China describing single gene knockdown experiments in human cancer cell lines

Author

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  • Jennifer A. Byrne

    (The Children’s Hospital at Westmead
    The University of Sydney Discipline of Child and Adolescent Health, The Children’s Hospital at Westmead)

  • Cyril Labbé

    (Domaine Universitaire de Saint-Martin-d’Hères)

Abstract

Comparing 5 publications from China that described knockdowns of the human TPD52L2 gene in human cancer cell lines identified unexpected similarities between these publications, flaws in experimental design, and mis-matches between some described experiments and the reported results. Following communications with journal editors, two of these TPD52L2 publications have been retracted. One retraction notice stated that while the authors claimed that the data were original, the experiments had been out-sourced to a biotechnology company. Using search engine queries, automatic text-analysis, different similarity measures, and further visual inspection, we identified 48 examples of highly similar papers describing single gene knockdowns in 1–2 human cancer cell lines that were all published by investigators from China. The incorrect use of a particular TPD52L2 shRNA sequence as a negative or non-targeting control was identified in 30/48 (63%) of these publications, using a combination of Google Scholar searches and visual inspection. Overall, these results suggest that some publications describing the effects of single gene knockdowns in human cancer cell lines may include the results of experiments that were not performed by the authors. This has serious implications for the validity of such results, and for their application in future research.

Suggested Citation

  • Jennifer A. Byrne & Cyril Labbé, 2017. "Striking similarities between publications from China describing single gene knockdown experiments in human cancer cell lines," Scientometrics, Springer;Akadémiai Kiadó, vol. 110(3), pages 1471-1493, March.
    • Handle: RePEc:spr:scient:v:110:y:2017:i:3:d:10.1007_s11192-016-2209-6
    DOI: 10.1007/s11192-016-2209-6
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    Cited by:

    1. Sida Feng & Lingzi Feng & Fang Han & Ye Zhang & Yanqing Ren & Lixue Wang & Junpeng Yuan, 2024. "Citation network analysis of retractions in molecular biology field," Scientometrics, Springer;Akadémiai Kiadó, vol. 129(8), pages 4795-4817, August.
    2. Jennifer A. Byrne & Yasunori Park & Rachael A. West & Amanda Capes-Davis & Bertrand Favier & Guillaume Cabanac & Cyril Labbé, 2021. "The thin ret(raction) line: biomedical journal responses to incorrect non-targeting nucleotide sequence reagents in human gene knockdown publications," Scientometrics, Springer;Akadémiai Kiadó, vol. 126(4), pages 3513-3534, April.
    3. Cyril Labbé & Guillaume Cabanac & Rachael A. West & Thierry Gautier & Bertrand Favier & Jennifer A. Byrne, 2020. "Flagging incorrect nucleotide sequence reagents in biomedical papers: To what extent does the leading publication format impede automatic error detection?," Scientometrics, Springer;Akadémiai Kiadó, vol. 124(2), pages 1139-1156, August.

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