Whole-genome expression profile in zebrafish embryos after chronic exposure to morphine: identification of new genes associated with neuronal function and mu opioid receptor expression

BMC Genomics

Raquel E Rodríguez⁴  Roger López-Bellido¹  Iván Rodríguez-Martín²  M Javier Herrero-Turrión³ 

[1] Instituto de Investigación Biomédica de Salamanca (IBSAL), Hospital Universitario de Salamanca - Edificio Virgen de la Vega, Salamanca 37007, Spain;Department of Basic Biomedical Sciences, European University of Madrid, Madrid 28670, Spain;Instituto de Neurociencias de Castilla y León, University of Salamanca, Salamanca 37007, Spain;Instituto de Neurociencias de Castilla y León, Department of Biochemistry and Molecular Biology, University of Salamanca, C/ Pintor Fernando Gallego 1, Salamanca 37007, Spain

关键词: Morpholino;    Addiction;    Gene expression;    Mu-opioid receptor;    Real-time quantitative PCR;    Zebrafish;    Microarray;    Morphine;   

Others  :  1128501
DOI  :  10.1186/1471-2164-15-874

 received in 2014-04-25, accepted in 2014-09-24,  发布年份 2014

【 摘 要 】

Background

A great number of studies have investigated changes induced by morphine exposure in gene expression using several experimental models. In this study, we examined gene expression changes during chronic exposure to morphine during maturation and differentiation of zebrafish CNS.

Results

Microarray analysis showed 254 genes whose expression was identified as different by at least 1.3 fold change following chronic morphine exposure as compared to controls. Of these, several novel genes (grb2, copb2, otpb, magi1b, grik-l, bnip4 and sox19b) have been detected for the first time in an experimental animal model treated with morphine. We have also identified a subset of genes (dao.1, wls, bnip4 and camk1γb) differentially expressed by chronic morphine exposure whose expression is related to mu opioid receptor gene expression. Altered expression of copb2, bnip4, sox19b, otpb, dao.1, grik-l and wls is indicative of modified neuronal development, CNS patterning processes, differentiation and dopaminergic neurotransmission, serotonergic signaling pathway, and glutamatergic neurotransmission. The deregulation of camk1γb signaling genes suggests an activation of axonogenesis and dendritogenesis.

Conclusions

Our study identified different functional classes of genes and individual candidates involved in the mechanisms underlying susceptibility to morphine actions related to CNS development. These results open new lines to study the treatment of pain and the molecular mechanisms involved in addiction. We also found a set of zebrafish-specific morphine-induced genes, which may be putative targets in human models for addiction and pain processes.

【 授权许可】

   
2014 Herrero-Turrión et al.; licensee BioMed Central Ltd.

【 图 表 】

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