Systems genetic and pharmacological analysis identifies candidate genes underlying mechanosensation in the von Frey test

Mechanical sensitivity is commonly affected in chronic pain and other neurological disorders. To discover mechanisms of individual differences in punctate mechanosensation, we performed quantitative trait locus (QTL) mapping of the response to von Frey monofilament stimulation in BXD recombinant inb...

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Veröffentlicht in:Genes, brain and behavior brain and behavior, 2016-07, Vol.15 (6), p.604-615
Hauptverfasser: Young, E. E., Bryant, C. D., Lee, S. E., Peng, X., Cook, B., Nair, H. K., Dreher, K. J., Zhang, X., Palmer, A. A., Chung, J. M., Mogil, J. S., Chesler, E. J., Lariviere, W. R.
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container_end_page 615
container_issue 6
container_start_page 604
container_title Genes, brain and behavior
container_volume 15
creator Young, E. E.
Bryant, C. D.
Lee, S. E.
Peng, X.
Cook, B.
Nair, H. K.
Dreher, K. J.
Zhang, X.
Palmer, A. A.
Chung, J. M.
Mogil, J. S.
Chesler, E. J.
Lariviere, W. R.
description Mechanical sensitivity is commonly affected in chronic pain and other neurological disorders. To discover mechanisms of individual differences in punctate mechanosensation, we performed quantitative trait locus (QTL) mapping of the response to von Frey monofilament stimulation in BXD recombinant inbred (BXD) mice. Significant loci were detected on mouse chromosome (Chr) 5 and 15, indicating the location of underlying polymorphisms that cause heritable variation in von Frey response. Convergent evidence from public gene expression data implicates candidate genes within the loci: von Frey thresholds were strongly correlated with baseline expression of Cacna2d1, Ift27 and Csnk1e in multiple brain regions of BXD strains. Systemic gabapentin and PF‐670462, which target the protein products of Cacna2d1 and Csnk1e, respectively, significantly increased von Frey thresholds in a genotype‐dependent manner in progenitors and BXD strains. Real‐time polymerase chain reaction confirmed differential expression of Cacna2d1 and Csnk1e in multiple brain regions in progenitors and showed differential expression of Cacna2d1 and Csnk1e in the dorsal root ganglia of the progenitors and BXD strains grouped by QTL genotype. Thus, linkage mapping, transcript covariance and pharmacological testing suggest that genetic variation affecting Cacna2d1 and Csnk1e may contribute to individual differences in von Frey filament response. This study implicates Cacna2d1 and Ift27 in basal mechanosensation in line with their previously suspected role in mechanical hypersensitivity. Csnk1e is implicated for von Frey response for the first time. Further investigation is warranted to identify the specific polymorphisms involved and assess the relevance of these findings to clinical conditions of disturbed mechanosensation. Two QTL, on chr 5 and 15, were identified for mechanosensation using the BXD RI strain panel. Candidate gene testing supports a role for Cacna2d1 (chr 5) and Csnk1e (chr 15) in mechanosensation variability.
doi_str_mv 10.1111/gbb.12302
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E. ; Bryant, C. D. ; Lee, S. E. ; Peng, X. ; Cook, B. ; Nair, H. K. ; Dreher, K. J. ; Zhang, X. ; Palmer, A. A. ; Chung, J. M. ; Mogil, J. S. ; Chesler, E. J. ; Lariviere, W. R.</creator><creatorcontrib>Young, E. E. ; Bryant, C. D. ; Lee, S. E. ; Peng, X. ; Cook, B. ; Nair, H. K. ; Dreher, K. J. ; Zhang, X. ; Palmer, A. A. ; Chung, J. M. ; Mogil, J. S. ; Chesler, E. J. ; Lariviere, W. R.</creatorcontrib><description>Mechanical sensitivity is commonly affected in chronic pain and other neurological disorders. To discover mechanisms of individual differences in punctate mechanosensation, we performed quantitative trait locus (QTL) mapping of the response to von Frey monofilament stimulation in BXD recombinant inbred (BXD) mice. Significant loci were detected on mouse chromosome (Chr) 5 and 15, indicating the location of underlying polymorphisms that cause heritable variation in von Frey response. Convergent evidence from public gene expression data implicates candidate genes within the loci: von Frey thresholds were strongly correlated with baseline expression of Cacna2d1, Ift27 and Csnk1e in multiple brain regions of BXD strains. Systemic gabapentin and PF‐670462, which target the protein products of Cacna2d1 and Csnk1e, respectively, significantly increased von Frey thresholds in a genotype‐dependent manner in progenitors and BXD strains. Real‐time polymerase chain reaction confirmed differential expression of Cacna2d1 and Csnk1e in multiple brain regions in progenitors and showed differential expression of Cacna2d1 and Csnk1e in the dorsal root ganglia of the progenitors and BXD strains grouped by QTL genotype. Thus, linkage mapping, transcript covariance and pharmacological testing suggest that genetic variation affecting Cacna2d1 and Csnk1e may contribute to individual differences in von Frey filament response. This study implicates Cacna2d1 and Ift27 in basal mechanosensation in line with their previously suspected role in mechanical hypersensitivity. Csnk1e is implicated for von Frey response for the first time. Further investigation is warranted to identify the specific polymorphisms involved and assess the relevance of these findings to clinical conditions of disturbed mechanosensation. Two QTL, on chr 5 and 15, were identified for mechanosensation using the BXD RI strain panel. 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E.</creatorcontrib><creatorcontrib>Bryant, C. D.</creatorcontrib><creatorcontrib>Lee, S. E.</creatorcontrib><creatorcontrib>Peng, X.</creatorcontrib><creatorcontrib>Cook, B.</creatorcontrib><creatorcontrib>Nair, H. K.</creatorcontrib><creatorcontrib>Dreher, K. J.</creatorcontrib><creatorcontrib>Zhang, X.</creatorcontrib><creatorcontrib>Palmer, A. A.</creatorcontrib><creatorcontrib>Chung, J. M.</creatorcontrib><creatorcontrib>Mogil, J. S.</creatorcontrib><creatorcontrib>Chesler, E. J.</creatorcontrib><creatorcontrib>Lariviere, W. R.</creatorcontrib><title>Systems genetic and pharmacological analysis identifies candidate genes underlying mechanosensation in the von Frey test</title><title>Genes, brain and behavior</title><addtitle>Genes Brain Behav</addtitle><description>Mechanical sensitivity is commonly affected in chronic pain and other neurological disorders. To discover mechanisms of individual differences in punctate mechanosensation, we performed quantitative trait locus (QTL) mapping of the response to von Frey monofilament stimulation in BXD recombinant inbred (BXD) mice. Significant loci were detected on mouse chromosome (Chr) 5 and 15, indicating the location of underlying polymorphisms that cause heritable variation in von Frey response. Convergent evidence from public gene expression data implicates candidate genes within the loci: von Frey thresholds were strongly correlated with baseline expression of Cacna2d1, Ift27 and Csnk1e in multiple brain regions of BXD strains. Systemic gabapentin and PF‐670462, which target the protein products of Cacna2d1 and Csnk1e, respectively, significantly increased von Frey thresholds in a genotype‐dependent manner in progenitors and BXD strains. Real‐time polymerase chain reaction confirmed differential expression of Cacna2d1 and Csnk1e in multiple brain regions in progenitors and showed differential expression of Cacna2d1 and Csnk1e in the dorsal root ganglia of the progenitors and BXD strains grouped by QTL genotype. Thus, linkage mapping, transcript covariance and pharmacological testing suggest that genetic variation affecting Cacna2d1 and Csnk1e may contribute to individual differences in von Frey filament response. This study implicates Cacna2d1 and Ift27 in basal mechanosensation in line with their previously suspected role in mechanical hypersensitivity. Csnk1e is implicated for von Frey response for the first time. Further investigation is warranted to identify the specific polymorphisms involved and assess the relevance of these findings to clinical conditions of disturbed mechanosensation. Two QTL, on chr 5 and 15, were identified for mechanosensation using the BXD RI strain panel. 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J.</au><au>Zhang, X.</au><au>Palmer, A. A.</au><au>Chung, J. M.</au><au>Mogil, J. S.</au><au>Chesler, E. J.</au><au>Lariviere, W. R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Systems genetic and pharmacological analysis identifies candidate genes underlying mechanosensation in the von Frey test</atitle><jtitle>Genes, brain and behavior</jtitle><addtitle>Genes Brain Behav</addtitle><date>2016-07</date><risdate>2016</risdate><volume>15</volume><issue>6</issue><spage>604</spage><epage>615</epage><pages>604-615</pages><issn>1601-1848</issn><eissn>1601-183X</eissn><coden>GBBEAO</coden><abstract>Mechanical sensitivity is commonly affected in chronic pain and other neurological disorders. To discover mechanisms of individual differences in punctate mechanosensation, we performed quantitative trait locus (QTL) mapping of the response to von Frey monofilament stimulation in BXD recombinant inbred (BXD) mice. Significant loci were detected on mouse chromosome (Chr) 5 and 15, indicating the location of underlying polymorphisms that cause heritable variation in von Frey response. Convergent evidence from public gene expression data implicates candidate genes within the loci: von Frey thresholds were strongly correlated with baseline expression of Cacna2d1, Ift27 and Csnk1e in multiple brain regions of BXD strains. Systemic gabapentin and PF‐670462, which target the protein products of Cacna2d1 and Csnk1e, respectively, significantly increased von Frey thresholds in a genotype‐dependent manner in progenitors and BXD strains. Real‐time polymerase chain reaction confirmed differential expression of Cacna2d1 and Csnk1e in multiple brain regions in progenitors and showed differential expression of Cacna2d1 and Csnk1e in the dorsal root ganglia of the progenitors and BXD strains grouped by QTL genotype. Thus, linkage mapping, transcript covariance and pharmacological testing suggest that genetic variation affecting Cacna2d1 and Csnk1e may contribute to individual differences in von Frey filament response. This study implicates Cacna2d1 and Ift27 in basal mechanosensation in line with their previously suspected role in mechanical hypersensitivity. Csnk1e is implicated for von Frey response for the first time. Further investigation is warranted to identify the specific polymorphisms involved and assess the relevance of these findings to clinical conditions of disturbed mechanosensation. Two QTL, on chr 5 and 15, were identified for mechanosensation using the BXD RI strain panel. Candidate gene testing supports a role for Cacna2d1 (chr 5) and Csnk1e (chr 15) in mechanosensation variability.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><pmid>27231153</pmid><doi>10.1111/gbb.12302</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record>
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subjects Amines - pharmacology
Analgesics - pharmacology
Animals
Brain
Calcium Channels - genetics
Calcium Channels - metabolism
Casein kinase 1
Casein Kinase I - genetics
Casein Kinase I - metabolism
Cyclohexanecarboxylic Acids - pharmacology
Gabapentin
gamma-Aminobutyric Acid - pharmacology
Ganglia, Spinal - drug effects
Ganglia, Spinal - metabolism
Ganglia, Spinal - physiology
Gene expression
linkage mapping
Male
Mechanotransduction, Cellular - genetics
Mice
microarray
Pyrimidines - pharmacology
Quantitative Trait Loci
quantitative trait locus
rab GTP-Binding Proteins - genetics
rab GTP-Binding Proteins - metabolism
Sensory Thresholds
Touch - drug effects
Touch - genetics
transcript abundance
voltage‐gated calcium channels
von Frey
title Systems genetic and pharmacological analysis identifies candidate genes underlying mechanosensation in the von Frey test
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