Related Experiment Video
Updated: Nov 25, 2025
High Throughput Characterization of Adult Stem Cells Engineered for Delivery of Therapeutic Factors for Neuroprotective Strategies
Published on: January 4, 2015
Retraction: Neural stem cell conditioned medium alleviates Aβ25-35 damage to SH-SY5Y cells through the PCMT1/MST1
Guoyong Jia1, Hongna Yang2, Zengyan Diao3
1Department of Neurology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan. jiajiaalex@163.com.
Abstract:
On behalf of the coauthors and with much regret, I must retract our publication entitled "Neural stem cell conditioned medium alleviates Aβ25-35 damage to SH-SY5Y cells through the PCMT1/MST1 pathway" published on European Journal of Histochemistry 2020;64(s2):3135 for the following reasons: In Figure 1A, the data of 20 μM Aβ25-35 for different time were confused with the data of 30 μM Aβ25-35 for different time. In Figure 2, the differential expression of PCMT1 is poor in repeatability. The authors need to revise the experimental design and steps to verify it again, re-do the experiment and conduct a more in-depth study. Dr. Congcong Sun Department of Neurology Qilu Hospital Cheeloo College of Medicine Shandong University China.
Insights
This retraction concerns a study on neural stem cell conditioned medium and its effect on Alzheimer's disease models. Data inconsistencies in figures and poor repeatability of results necessitate the retraction.
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Background:
- Alzheimer's disease is characterized by amyloid-beta (Aβ) peptide aggregation.
- Neural stem cells (NSCs) show potential therapeutic properties.
- Understanding molecular pathways involved in Aβ toxicity is crucial.
Purpose of the Study:
- To investigate the protective effects of neural stem cell conditioned medium (NSCCM) against Aβ25-35 induced damage in SH-SY5Y cells.
- To elucidate the role of the PCMT1/MST1 pathway in mediating these protective effects.
Main Methods:
- SH-SY5Y cells were treated with Aβ25-35 to induce damage.
- Cell viability and apoptosis assays were performed.
- Western blotting was used to analyze protein expression, including PCMT1 and MST1.
Main Results:
- The original study reported that NSCCM alleviated Aβ25-35 induced damage.
- A proposed mechanism involved the upregulation of PCMT1 and activation of the MST1 pathway.
- However, critical data errors were identified in Figure 1A and poor repeatability in PCMT1 expression data (Figure 2).
Conclusions:
- Due to significant data inconsistencies and lack of repeatability, the findings of the original study cannot be validated.
- The authors acknowledge the need to revise experimental designs and re-conduct experiments for verification.
- This retraction highlights the importance of rigorous data integrity and reproducibility in scientific research.
