Retraction of: Glypican-1-targeted and gemcitabine-loaded liposomes enhance tumor-suppressing effect on pancreatic cancer

Aging has completed its investigation of this paper.Several concerns were raised about this paper, including overlap with unrelated papers from different institutions.We found that a few tumor images in Figure 5B "GPC1-LP (GEM) inhibited tumor growth of the orthotopic pancreatic cancer mice" are duplications of tumor images in Figure 6A published earlier in an unrelated paper [1] and Figures 6B, 6b, 6B and 4G published in four more unrelated papers [2-5], some of which already have been retracted.In addition, Figure 1B "Cumulative drug release profiling of LP (GEM) and GPC1-LP (GEM) in phosphate-buffer saline (PBS, pH 7.4 and pH 5.0)" contains the same graph as unrelated paper [6].