Retraction Note: Enhanced Suppression of Tumor Growth Using a Combination of NK4 Plasmid DNA-PEG Engrafted Cationized Dextran Complex and Ultrasound Irradiation

Cancer Gene Therapy (2020) 27:266 https://doi.org/10.1038/s41417-019-0148-0

RETRACTION NOTE

Retraction Note: Enhanced suppression of tumor growth using a combination of NK4 plasmid DNA-PEG engrafted cationized dextran complex and ultrasound irradiation

1 1 2 2 1 H. Hosseinkhani ● T. Kushibiki ● K. Matsumoto ● T. Nakamura ● Y. Tabata

Published online: 30 October 2019 © The Author(s), under exclusive licence to Springer Nature America, Inc. 2019

Retraction to: Cancer Gene Therapy 1. Hosseinkhani H, Kushibiki T, Matsumoto K, Naka- https://doi.org/10.1038/sj.cgt.7700918, mura T, Tabata Y. Cancer Gene Therapy. 2006;5:479–89. published online 4 Novermber 2005 https://www.nature.com/articles/7700918 2. Hosseinkhani H, Tabata Y. J Controll Release. The authors have retracted this article [1] because Figs. 4, 6 2004;1:157–71. https://www.sciencedirect.com/science/a and 7 contain duplicated and modified figures from prior rticle/pii/S0168365904001026 1234567890();,: 1234567890();,: publications [2–5] which have now been retracted. 3. Hosseinkhani H, Tabata Y. J Controll Release. 2005;2–3:540–56. https://www.sciencedirect.com/science/a 1. Figure 4 contains duplicated figures from Fig. 1 in ref. rticle/pii/S0168365905004050 [2] and Fig. 2 in ref. [3]. 4. Aoyama T, Hosseinkhani H, Yamamoto S, Ogawa O, 2. Figure 6 contains duplicated and modified figures Tabata Y. J Controll Release. 2002;1–3:345–56. from Fig. 8 in ref. [3] and Fig. 5 in ref. [4]. https://www.sciencedirect.com/science/article/pii/ 3. Figure 7 contains duplicated and modified figures S0168365902000299 from Fig. 6 in ref. [2], Fig. 9 in ref. [3] and Fig. 7 in 5. Hosseinkhani H, Aoyama T, Ogawa O, Tabata Y. J ref. [5]. Controll Release. 2003;2:297–312. https://www. sciencedirect.com/science/article/pii/S016836590200425X All authors agree to this retraction.

* Y. Tabata [email protected]

1 Department of Biomaterials, Field of Tissue Engineering, Institute for Frontier Medical Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan 2 Division of Molecular Regenerative Medicine, Course of Advanced Medicine, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan