Activation of the mesolimbic dopamine reward pathway by acute ethanol produces reinforcement and changes in gene expression that appear to be crucial to the molecular basis for adaptive behaviors and addiction. The inbred mouse strains DBA/2J and C57BL/6J exhibit contrasting acute behavioral responses to ethanol. We used oligonucleotide microarrays and bioinformatics methods to characterize patterns of gene expression in three brain regions of the mesolimbic reward pathway of these strains. Expression profiling included examination of both differences in gene expression 4 h after saline injection or acute ethanol (2 g/kg). Using a rigorous stepwise method for microarray analysis, we identified 788 genes differentially expressed in control DBA/2J versus C57BL/6J mice and 307 ethanol-regulated genes in the nucleus accumbens, prefrontal cortex, and ventral tegmental area. There were strikingly divergent patterns of ethanol-responsive gene expression in the two strains. Ethanol-responsive genes also showed clustering at discrete chromosomal regions, suggesting local chromatin effects in regulation. Ethanol-regulated genes were generally related to neuroplasticity, but regulation of discrete functional groups and pathways was brain region specific: glucocorticoid signaling, neurogenesis, and myelination in the prefrontal cortex; neuropeptide signaling and developmental genes, including factor Bdnf, in the nucleus accumbens; and retinoic acid signaling in the ventral tegmental area. Bioinformatics analysis identified several potential candidate genes for quantitative trait loci linked to ethanol behaviors, further supporting a role for expression profiling in identifying genes for complex traits. Brain region-specific changes in signaling and neuronal plasticity may be critical components in development of lasting ethanol behavioral phenotypes such as dependence, sensitization, and craving.
Using a two-stage process, several genes were initially identified using microarray analyses of cerebellar tissue from ethanol-treated PKCgamma mutant and wild-type mice. This geneset consists of genes related to PKCgamma mutant expression changes due to chronic ethanol diet.
Authors:
Bowers BJ, Radcliffe RA, Smith AM, Miyamoto-Ditmon J, Wehner JM
Study investigates gene expression profiles of MDMA-induced genes and confirms that a single does of MDMA can cause multiple transcriptional changes. This gene set contains 19 upregulated MDMA-induced genes.
A list of the 307 genes found to be upregulated or downregulated by ethanol in PFC, VTA or NA of B6 or D2 mice. ID number represents cluster membership from Figure 4.
Authors:
Kerns RT, Ravindranathan A, Hassan S, Cage MP, York T, Sikela JM, Williams RW, Miles MF
Differentially expressed in the Nucleus accumbens following 24 hr continuous 9.5g/kg/day alcohol drinking vs. water drinking in alcohol preferring rats. Estimated BAC in the alcohol exposed group was > 85mg%. The 406 significanlty different probe sets represent 374 uniquely named genes, with most gene expression differences in the range of 1.1-1.3 fold.
A list of genes whose transcript abundance in the PFC changed significantly 4 hours after an acute dose of ethanol (1.8 g/kg). This list was generated using Fisher's Combined Probability test to analyze saline vs ethanol S-scores across B6 and D2 inbred strains (n=3) and 27 BXD RI lines (n=1). Statistical significance was determined using 1,000 permutations of S-score data and selecting for probe-sets with q-values < 0.05. Aaron Wolen 5-26-10.
Authors:
Wolen AR, Phillips CA, Langston MA, Putman AH, Vorster PJ, Bruce NA, York TP, Williams RW, Miles MF
Oligonucleotide microarray analysis in postmortem prefrontal cortices of alcoholics. Among about 12,000 genes represented on microarray, a total of 79 genes showed differential expression changes in alcoholics compared with control subjects, consisting of 54 up- and 25 down-regulated genes. From Iwamoto et al., 2004.
Authors:
Iwamoto K, Bundo M, Yamamoto M, Ozawa H, Saito T, Kato T
The production of 12 out of 27 measured factors was induced by CEsHUT including IL-1β, TNF and IL-1Ra. In contrast to sIL-1Ra production, that of IL-1β and TNF was inhibited by HDL, corroborating previous results. In addition, CEsHUT induced monocytes to produce factors involved in their localization, survival and differentiation such as CCL5 (RANTES), CCL2 (MCP-1), interferon-γ (IFNγ), granulocyte-macrophage colony-stimulating factor (GM-CSF), and macrophage-CSF (M-CSF). The production of the latter was moderate and it was not affected by HDL.
Authors:
Gruaz L, Delucinge-Vivier C, Descombes P, Dayer JM, Burger D
cocaine related behavior 15 (Cocrb15) spans 70.807693 - 120.807693 Mbp (NCBI Build 37) on Chr 15. Obtained from MGI (http://www.informatics.jax.org) by searching for QTLs containing the keyword .
QTL for cocaine related behavior on Chr15 at D15Mit3 (83.88 Mbp , Build 37)
Description:
cocaine related behavior spans 58.88 - 108.88 Mbp (NCBI Build 37) on Chr15. This interval was obtained by using an interval width of 25 Mbp around the peak marker (Build 37, MGI, http://informatics.jax.org).
QTL for alcohol consumption on Chr15 at D15Mit105 (87.33 Mbp , Build 37)
Description:
alcohol consumption spans 62.33 - 112.33 Mbp (NCBI Build 37) on Chr15. This interval was obtained by using an interval width of 25 Mbp around the peak marker (Build 37, MGI, http://informatics.jax.org).
Authors:
Vadasz C, Saito M, Gyetvai B, Mikics E, Vadasz C 2nd
QTL for cocaine induced activation on Chr15 at NA (92.79 Mbp , Build 37)
Description:
cocaine induced activation spans 67.79 - 117.79 Mbp (NCBI Build 37) on Chr15. This interval was obtained by using an interval width of 25 Mbp around the peak marker (Build 37, MGI, http://informatics.jax.org).
QTL for METH responses for home cage activity on Chr15 at D15Mit1 (93.20 Mbp , Build 37)
Description:
METH responses for home cage activity spans 68.20 - 118.20 Mbp (NCBI Build 37) on Chr15. This interval was obtained by using an interval width of 25 Mbp around the peak marker (Build 37, MGI, http://informatics.jax.org).
QTL for cocaine related behavior on Chr15 at D15Ncvs29 (95.81 Mbp , Build 37)
Description:
cocaine related behavior spans 70.81 - 120.81 Mbp (NCBI Build 37) on Chr15. This interval was obtained by using an interval width of 25 Mbp around the peak marker (Build 37, MGI, http://informatics.jax.org).
QTL for METH responses for home cage activity on Chr15 at Spt1 (102.87 Mbp , Build 37)
Description:
METH responses for home cage activity spans 77.87 - 127.87 Mbp (NCBI Build 37) on Chr15. This interval was obtained by using an interval width of 25 Mbp around the peak marker (Build 37, MGI, http://informatics.jax.org).
QTL for cocaine seizure on Chr15 at D15Mit48 (105.10 Mbp , Build 37)
Description:
cocaine seizure spans 80.10 - 130.10 Mbp (NCBI Build 37) on Chr15. This interval was obtained by using an interval width of 25 Mbp around the peak marker (Build 37, MGI, http://informatics.jax.org).
Chronic cocaine - Cocaine vs. Saline DNA microarray Change in gene expression Five rats were trained to self-administer cocaine infusions (1.5 mg / kg) during daily sessions. Once rats acquired cocaine self-administration (five consecutive sessions in which rats earned all 20 infusions that were available), cocaine infusions (1.5 mg / kg) were available in discrete 10-min trials 24-hr per day (4 trials / hr). Each discrete trial was initiated by the extension of the left lever into the chamber. Each response on this lever during a 10-minute discrete trial produced an infu Genespring 7.0 A gene was considered to be expressed if its signal intensity was a minimum of twice the background in at least four of the five replicates. Upregulated genes were defined as having an average expression ratio of >1.4, and the downregulated genes were defined as having an average expression ratio of <0.7. A gene was considered to be significantly regulated if the t-test p-value was < 0.05 with the false discovery rate (FDR) as the multiple testing correction. (NIF Method ID 182)
Authors:
Lynch WJ, Girgenti MJ, Breslin FJ, Newton SS, Taylor JR
Acute and chronic alcohol exposure was analyzed in 534 (C57BL/6J x C3H/HeJ)F2 mice. Behavioral testing was done using 5 traits, acute drug effect, forced ethanol drinking, withdrawal studies ethanol preference and stress induced ethanol drinking. The following QTL were found in a genome wide scan: Following the QTL is the Chromosome , cM location, and LOD score, Eih1 (Chr 1, 85 cM, LOD 6.6), Eih2 (Chr 7, 10 cM, LOD 3.6), Ceih1 (Chr 3, 55 cM, LOD 4.1), Ceih2 (Chr 6, 24.7 cM, LOD 4.1), Ceih3 (Chr 13, 39 cM, LOD 4.1), Eia1(Chr 1, 65 cM, LOD 10.3 and 10.4), Eiwa1 (Chr 7, 50 cM, LOD 4.4), Eiwa2(Chr 11, 43.1 cM, LOD 4.1),Aldd1(Chr 5, 42 cM, LOD 13.2), Aldd2(Chr 12, 18 cM, LOD 5.3),Eiwax1(Chr 1, 79 cM, LOD 6.5), Eiwax2(Chr 5, 59 cM, LOD 15.0), Eiwax3(Chr 12, 21 cM, LOD 3.6), Methp1(Chr 16, 31.4 cM, LOD 4.3), Mec1(Chr 16, 19.4 cM, LOD 5.1), Epbs1(Chr 16, 33 cM, LOD 4.1), Ecbs1(Chr 16, 29.4 cM, LOD 4.8), Mec2(Chr 1, 109 cM, LOD 3.9), Mec3(Chr 2, 109 cM, LOD 4.3), Mec4(Chr 5, 29 cM, LOD 3.9), Mec5(Chr 10, 2 cM, LOD 5.0), Mec6(Chr 15, 49 cM, LOD 5.2, 95% CI 6.7–56.7).
Authors:
Drews E, Rcz I, Lacava AD, Barth A, Bilkei-Gorz A, Wienker TF, Zimmer A
Ethanol Preference from BXD lines span 58586243-108586243. This interval was obtained by using an arbitrary interval width of 25 Mbp around the peak marker (Build 37, MGI, http://informatics.jax.org). Marker Loci associated with 10% Ethanol Preferences Drinking at p<0.05 (Two Tailed) in the BXD RI set and the Correlation Coefficient, p and Estimated LOD. D15Mit33 (83586243 NCBI 37) p=0.05, LOD=0.08 overall LOD BXD & Select Line 2.4.
QTL mapping results for B6D2F2 mice in regions provisionally identified in BXD RI mice for free-choice ethanol consumption. Peak D15Mit33 58586243-108586243. This interval was obtained by using an arbitrary interval width of 25 Mbp around the peak marker (Build 37, MGI, http://informatics.jax.org)
Genes associated with Homo sapiens that interact with the MeSH term 'Azacitidine' (D001374). Incorporates data from 1 publications curated by the Comparative Toxicogenomics Database (CTD). ODE Gene scores represent number of supporting publications per gene.
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