Reversal of depressed behaviors in mice by p11 gene therapy in the nucleus accumbens

Brian Alexander, Jennifer Warner-Schmidt, Therese Eriksson, Carol Tamminga, Margarita Arango-Llievano, Subroto Ghose, Mary Vernov, Mihaela Stavarche, Sergei Musatov, Marc Flajolet, Per Svenningsson, Paul Greengard, Michael G. Kaplitt

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Abstract

The etiology of major depression remains unknown, but dysfunction of serotonergic signaling has long been implicated in the pathophysiology of this disorder. p11 is an S100 family member recently identified as a serotonin 1B [5-hydroxytryptamine 1B (5-HT1B)] and serotonin 4 (5-HT4) receptor-binding protein. Mutant mice in which p11 is deleted show depression-like behaviors, suggesting that p11 may be a mediator of affective disorder pathophysiology. Using somatic gene transfer, we have now identified the nucleus accumbens as a key site of p11 action. Reduction of p11 with adeno-associated virus (AAV)-mediated RNA interference in the nucleus accumbens, but not in the anterior cingulate, of normal adult mice resulted in depression-like behaviors nearly identical to those seen in p11 knockout mice. Restoration of p11 expression specifically in the nucleus accumbens of p11 knockout mice normalized depression-like behaviors. Human nucleus accumbens tissue shows a significant reduction of p11 protein in depressed patients when compared to matched healthy controls. These results suggest that p11 loss in rodent and human nucleus accumbens may contribute to the pathophysiology of depression. Normalization of p11 expression within this brain region with AAV-mediated gene therapy may be of therapeutic value.

Original languageEnglish (US)
Article number54ra76
JournalScience Translational Medicine
Volume2
Issue number54
DOIs
StatePublished - Oct 20 2010

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Nucleus Accumbens
Genetic Therapy
Depression
Dependovirus
Knockout Mice
Serotonin
Receptors, Serotonin, 5-HT4
Gyrus Cinguli
RNA Interference
Mood Disorders
Rodentia
Carrier Proteins
Brain
Genes
Proteins

ASJC Scopus subject areas

  • Medicine(all)

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Reversal of depressed behaviors in mice by p11 gene therapy in the nucleus accumbens. / Alexander, Brian; Warner-Schmidt, Jennifer; Eriksson, Therese; Tamminga, Carol; Arango-Llievano, Margarita; Ghose, Subroto; Vernov, Mary; Stavarche, Mihaela; Musatov, Sergei; Flajolet, Marc; Svenningsson, Per; Greengard, Paul; Kaplitt, Michael G.

In: Science Translational Medicine, Vol. 2, No. 54, 54ra76, 20.10.2010.

Research output: Contribution to journalArticle

Alexander, B, Warner-Schmidt, J, Eriksson, T, Tamminga, C, Arango-Llievano, M, Ghose, S, Vernov, M, Stavarche, M, Musatov, S, Flajolet, M, Svenningsson, P, Greengard, P & Kaplitt, MG 2010, 'Reversal of depressed behaviors in mice by p11 gene therapy in the nucleus accumbens', Science Translational Medicine, vol. 2, no. 54, 54ra76. https://doi.org/10.1126/scitranslmed.3001079
Alexander, Brian ; Warner-Schmidt, Jennifer ; Eriksson, Therese ; Tamminga, Carol ; Arango-Llievano, Margarita ; Ghose, Subroto ; Vernov, Mary ; Stavarche, Mihaela ; Musatov, Sergei ; Flajolet, Marc ; Svenningsson, Per ; Greengard, Paul ; Kaplitt, Michael G. / Reversal of depressed behaviors in mice by p11 gene therapy in the nucleus accumbens. In: Science Translational Medicine. 2010 ; Vol. 2, No. 54.
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