The International Journal of Molecular Medicine recently issued an Expression of Concern regarding a 2012 study on cardiomyocyte protection. This notice highlights potential research integrity issues involving heat shock protein 90 (HSP90) expression data. Specifically, a reader alerted the editorial office to suspicious similarities between Western blot images in the original publication.

Investigating Research Integrity Issues

The investigation centers on Figure 2A and Figure 4A of the paper. These images reportedly show HSP90 protein levels under different experimental conditions. However, the editor noted that the bands in Fig. 4A appear strikingly similar to those in Fig. 2A after horizontal flipping and resizing. Consequently, the journal suggests that these data panels might originate from the same source. This finding raises serious questions about the validity of the reported experimental groups.

Implications for Molecular Cardiology

Data accuracy remains fundamental for advancing therapies in cardiology and molecular medicine. The study originally claimed that HSP90 protects cardiac cells against serum and glucose deprivation during hypoxia. If the underlying data is compromised, scientists must re-evaluate these protective mechanisms. Currently, the editorial office is awaiting an explanation from the authors while the investigation continues.

Frequently Asked Questions

What is an Expression of Concern?

An Expression of Concern is a formal notice published by a journal. It warns the scientific community about potential data irregularities or ethical concerns while an investigation takes place.

Why was this specific study flagged?

A reader identified that blot images for different experimental groups looked identical after digital manipulation. This suggests that the researchers may have reused the same image to represent different results.

How should researchers treat these findings?

Researchers should exercise extreme caution when citing this study. The potential for data duplication undermines the reliability of the paper's conclusions regarding cardiomyocyte protection.

Disclaimer: This content is for informational and educational purposes only. It does not constitute professional medical advice or a substitute for consultation with a healthcare provider. Refer to the latest local and national guidelines for clinical practice.

References

1. Wu K et al. [Expression of Concern] Increased expression of heat shock protein 90 under chemical hypoxic conditions protects cardiomyocytes against injury induced by serum and glucose deprivation. Int J Mol Med. 2026 Jun undefined. doi: undefined. PMID: 41930560.


2. Spandidos Publications. [Expression of Concern] Increased expression of heat shock protein 90 under chemical hypoxic conditions protects cardiomyocytes against injury induced by serum and glucose deprivation. International Journal of Molecular Medicine. 2026.


3. Wu K, Xu W, You Q, et al. Increased expression of heat shock protein 90 under chemical hypoxic conditions protects cardiomyocytes against injury induced by serum and glucose deprivation. Int J Mol Med. 2012;30(5):1138-1144. doi:10.3892/ijmm.2012.1099.