Stem cell research: updates and commentary on research findings

Research spotlights

Scientific research papers, summarized for non-scientists.

Capturing the primordial human stem cells in the lab

Researchers at the University of Cambridge have discovered a method to “reset” human embryonic stem cells to an earlier developmental stage, producing a type of stem cell up to now only seen in rodents.

Using time-lapse imagery to take a closer look at human embryonic stem cells

Time-lapse imaging and tracking of single human embryonic stem cells has allowed researchers to zoom in and take a closer look at the behaviour of these special cells. Researchers from the University of Sheffield have identified multiple bottlenecks that restrict the growth of these cells in the laboratory, and observed complex and diverse behaviour as the cells move around the culture dish and interact with their neighbours. These findings will help researchers design the best conditions to safely and efficiently grow human embryonic stem cells in the laboratory. 

New study raises doubts over the benefits of heart stem cell therapy

Summary

Numerous clinical trials have attempted to test the benefits of using a patient’s own stem cells (taken from the bone marrow) to treat heart disease. Results have been conflicting; some claim significant improvements in heart function, whilst others report none at all. A group at Imperial College London investigated the possible reasons for this inconsistency and found strange, unexplained discrepancies within reports of many of the clinical trials. They have identified a link between claimed success rates and discrepancies, casting doubts over the validity of this treatment.

- 133 reports of 49 clinical trials were investigated
- 600+ discrepancies were found
- Discrepancies ranged from minor to serious mistakes and misrepresentation of data
- Reports with the most discrepancies claimed most benefit to patients, while those without discrepancies showed no improvement in patients’ conditions