Discovery of Insect Erythropoietin Receptor Paves Way for Neurodegenerative Disease Treatment

Introduction to Erythropoietin and Its Role

Erythropoietin (Epo) is a hormone that stimulates red blood cell production (erythropoiesis) and enhances oxygen supply to tissues, playing a critical role in protecting nerve cells from degeneration. Clinically, Epo has been utilized to treat neurodegenerative diseases such as Alzheimer’s. However, its use is often accompanied by significant side effects due to increased red blood cell production. Therefore, a treatment that harnesses the neuroprotective benefits of Epo without inducing erythropoiesis is highly desirable.

Research Findings on CRLF3 in Insects

A recent study published in *Frontiers in Molecular Neuroscience* by a team of researchers in Germany has unveiled an alternative erythropoietin receptor, CRLF3, found in insects. This receptor has the potential to elicit the neuroprotective effects of erythropoietin without triggering red blood cell production.

The research team made a significant observation: insects treated with human erythropoietin demonstrated a reduction in cell death, despite lacking the conventional erythropoietin receptors present in humans. This hinted at the existence of a unique receptor capable of activating protective effects in nerve cells.

Study Methodology and Results

To further investigate, the team cultured brain cells from locusts, which share a similar vulnerability to oxygen deprivation as human brain cells during strokes. Upon treating these locust brain cells with human erythropoietin, the researchers found that cell survival occurred only in the presence of the CRLF3 receptor, which had not been altered to diminish its activity.

Significance of CRLF3 and Next Steps

The CRLF3 receptor has been identified across 293 animal species, including humans, suggesting its evolutionary significance. Although this study focused on locusts, the structural similarities between locust and human CRLF3 receptors imply that this receptor may play a vital role in human nerve cells as well.

The next phase of research will explore whether activating CRLF3 can protect human nerve cells from degeneration. This could lead to the development of innovative treatments for neurodegenerative diseases that avoid the side effects associated with erythropoiesis.

Conclusion

The findings from this study highlight the potential of the CRLF3 receptor as a key player in neuroprotection, paving the way for new therapeutic approaches to combat neurodegenerative diseases in humans.

References

Hahn, N., Büschgens, L., Schwedhelm-Domeyer, N., Bank, S., Geurten, B. R. H., Neugebauer, P., … Heinrich, R. (2019). The Orphan Cytokine Receptor CRLF3 Emerged With the Origin of the Nervous System and Is a Neuroprotective Erythropoietin Receptor in Locusts. *Frontiers in Molecular Neuroscience*, 12. doi: 10.3389/fnmol.2019.00251
Nerve cell protection free from side effects. (2019, October 25). Retrieved from https://www.eurekalert.org/pub_releases/2019-10/uog-ncp102519.php
Image by Arek Socha from Pixabay.