RGD Reference Report - Expression of G-protein-coupled receptor kinase 6 (GRK6) after acute spinal cord injury in adult rat. - Rat Genome Database

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Expression of G-protein-coupled receptor kinase 6 (GRK6) after acute spinal cord injury in adult rat.

Authors: Sun, Binbin  Gao, Yilu  Lou, Dong  Wu, Xiujie  Wei, Haixiang  Wen, Hai  Deng, Xiaolong  Zhang, Feng 
Citation: Sun B, etal., J Mol Histol. 2013 Jun;44(3):259-70. doi: 10.1007/s10735-013-9486-7. Epub 2013 Jan 29.
RGD ID: 13792782
Pubmed: PMID:23359120   (View Abstract at PubMed)
DOI: DOI:10.1007/s10735-013-9486-7   (Journal Full-text)

Spinal cord injury frequently results in permanent loss of neurological function. It includes many complex molecular and biochemical mechanisms. G-protein-coupled receptor kinase 6 (GRK6) is an intracellular kinase that regulates the sensitivity of certain G-protein-coupled receptors. Some studies reported GRK2 and GRK5 modulate the NFκB pathway in macrophages. Additionally, GRK2 is referred to as regulating activation of spinal cord microglia and GRK6 expression is significantly elevated in most brain regions in the MPTP-lesioned parkinsonian monkeys. However, the expression and function of GRK6 in nervous system lesion and repair are not well understood. In this study, we performed an acute spinal cord injury (SCI) model in adult rats. Western blot analysis showed the expression of GRK6 was upregulated significantly at protein level in spinal cord after SCI. Immunohistochemistry and immunofluorescence revealed wide expression of GRK6 in the normal spinal cord. After injury, GRK6 expression was increased predominantly in microglia, which expressed F4/80 (marker of macrophages and activated microglia) strongly. To understand whether GRK6 played a role in microglia activation, we applied lipopolysaccharide (LPS) to induce microglia activation in vitro. Western blot analysis demonstrated up-regulation in GRK6 protein expression after LPS stimulation was time- and dose-dependent and that up-regulation in F4/80 expression was concomitant with GRK6. These data suggested that GRK6 might be involved in the pathophysiology of SCI.



RGD Manual Disease Annotations    Click to see Annotation Detail View

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
GRK6HumanSpinal Cord Injuries  ISOGrk6 (Rattus norvegicus)protein:increased expression:spinal cord more ...RGD 
Grk6RatSpinal Cord Injuries  IEP protein:increased expression:spinal cord more ...RGD 
Grk6MouseSpinal Cord Injuries  ISOGrk6 (Rattus norvegicus)protein:increased expression:spinal cord more ...RGD 

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
Grk6Ratcellular response to lipopolysaccharide  IEP  RGD 

Objects Annotated

Genes (Rattus norvegicus)
Grk6  (G protein-coupled receptor kinase 6)

Genes (Mus musculus)
Grk6  (G protein-coupled receptor kinase 6)

Genes (Homo sapiens)
GRK6  (G protein-coupled receptor kinase 6)


Additional Information