Groundbreaking Anti-Depressant Therapy Discovered
The work was led by research director Eleanor Coffey, who works at the Turku Centre for Biotechnology, a joint unit of the University of Turku and Åbo Akademi University.
– We identified a new molecule that alleviates anxiety and depressive behaviour in rodents. This previously unknown mechanism brings fresh insight on how the brain works to regulate mood and indicates that inhibitors of JNK, such as the one used here, can provide a new avenue for anti-depressant and anxiolytic drug development, Coffey says.
Researchers used virus tools to find out where in the brain the JNK inhibitor acted to improve mood. They found out the molecule acts to alleviate anxiety and depression by controlling newly born nerve cells in the hippocampus, a part of the brain that controls emotions and learning.
The next step will be to do further tests in rodents. Researchers will test JNK:s additional benefit to existing anti-depressant drugs.
– Although we uncover a new mechanism and a new inhibitor molecule that alleviates depression and anxiety in mice, we need to see if this provides additional benefit to existing drugs. Thus, we will do experiments where we administer this new inhibitor together with commonly used drugs and measure fine behavioral details in the mice, Coffey says.
The inhibitor that researchers used is already in clinical trials for stroke and hearing loss.
– Actually many large pharma have over the years developed a range of inhibitors to JNK. However it was not earlier known that JNK regulated emotional behavior, so an important message from this study is that JNK should be considered seriously as a target for novel treatments of anxiety and depression.
The work, led by Eleanor Coffey, Research Director at Åbo Akademi University is a collaborative effort between scientists in Finland and the US. The research was funded by the EU-funded Marie Curie Initial Training Network r’BIRTH, by the Academy of Finland, Turku Network in Molecular Biosciences and the National Institute on Aging.
The results are published in the Nature Publishing Group Journal, Molecular Psychiatry. Link to publication: http://www.nature.com/mp/journal/vaop/ncurrent/full/mp2016203a.html
Contacts and sources:
Citation: JNK1 controls adult hippocampal neurogenesis and imposes cell-autonomous control of anxiety behaviour from the neurogenic niche
H Mohammad, F Marchisella, S Ortega-Martinez, P Hollos, K Eerola, E Komulainen, N Kulesskaya, E Freemantle, V Fagerholm, E Savontous, H Rauvala, B D Peterson, H van Praag and E T Coffey (Turku Centre for Biotechnology, Åbo Akademi University and University of Turku, Turku, Finland)
nature.com, Molecular Psychiatry advance online publication 15 November 2016; doi: 10.1038/mp.2016.203
Source:
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