Category: bioconjugate chemistry

Journal retracts nanoparticles paper for duplicating figures

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A paper on nanoparticles that target cancer cells has been retracted for duplicating figures from three other papers.

The articles all share a first author: Manasmita Das, based at the time of the research at the Indian Institute of Technology Kharagpur and the National Institute of Pharmaceutical Education and Research (NIPER). According to her LinkedIn profile, she is currently a postdoc at the University of North Carolina.

The abstract of the 2011 Bioconjugate Chemistry paper explains just what the new nanoparticles would be useful for:

Multifunctional nanoparticles, developed in the course of the study, could selectively target and induce apoptosis to folate-receptor (FR) overexpressing cancer cells with enhanced efficacy as compared to the free drug. In addition, the dual optical and magnetic properties of the synthesized nanoparticles aided in the real-time tracking of their intracellular pathways also as apoptotic events through dual fluorescence and MR-based imaging.

But according to the retraction note, figure duplications “seriously undermine the conclusions presented in the research article.” Here’s more about the source of those duplications from the full note: Continue reading Journal retracts nanoparticles paper for duplicating figures

Author who broke into lab to tamper with investigation now up to half a dozen retractions

Bioconjugate ChemistryKarel Bezouška, the scientist who tried to tamper with an investigation into his work by breaking into a lab refrigerator, has had his fifth and sixth papers retracted.

Here’s the notice from Bioconjugate Chemistry for 2012’s “Dimerization of an Immunoactivating Peptide Derived from Mycobacterial hsp65 Using N-Hydroxysuccinimide Based Bifunctional Reagents Is Critical for Its Antitumor Properties:” Continue reading Author who broke into lab to tamper with investigation now up to half a dozen retractions

Authors retract chemistry paper after failing to get company’s permission to publish

Two chemists who published a paper earlier this year in Bioconjugate Chemistry have withdrawn it, after their company, Life Technologies, let them know they didn’t have permission to submit the work. The retraction notice reads:

Facile Synthesis of Symmetric, Monofunctional Cyanine Dyes for Imaging Applications, by Lai-Qiang Ying and Bruce P. Branchaud, Bioconjugate Chem., 2011, 22 (5), pp 865–869, DOI: 10.1021/bc2001006, has been retracted at the request of the authors and Life Technologies. The article was submitted for publication without the approval of Life Technologies.

Where the paper had appeared previously — it’s been completely removed from the journal’s site, as opposed to being marked as “withdrawn” or “retracted” — this is all that’s left: Continue reading Authors retract chemistry paper after failing to get company’s permission to publish