RGD Reference Report - Plasminogen activator promotes recovery following spinal cord injury. - Rat Genome Database

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Plasminogen activator promotes recovery following spinal cord injury.

Authors: Seeds, N  Mikesell, S  Vest, R  Bugge, T  Schaller, K  Minor, K 
Citation: Seeds N, etal., Cell Mol Neurobiol. 2011 Aug;31(6):961-7. Epub 2011 May 14.
RGD ID: 6483797
Pubmed: PMID:21573723   (View Abstract at PubMed)
PMCID: PMC3146570   (View Article at PubMed Central)
DOI: DOI:10.1007/s10571-011-9701-6   (Journal Full-text)

Plasminogen activators play an important role in synaptic plasticity associated with the crossed phrenic phenomenon (CPP) and recovery of respiratory function after spinal cord injury. A genetic approach using knockout mice lacking various genes in the plasminogen activator/plasmin system has shown that induction of urokinase plasminogen activator (uPA) is required during the first hour after a C2-hemisection for the acquisition of the CPP response. The uPA knockout mice do not show the structural remodeling of phrenic motor neuron synapses characteristic of the CPP response. As shown here uPA acts in a cell signaling manner via binding to its receptor uPAR rather than as a protease, since uPAR knockout mice or knock-in mice possessing a modified uPA that is unable to bind to uPAR both fail to generate a CPP and recover respiratory function. Microarray data and real-time PCR analysis of mRNAs induced in the phrenic motor nucleus after C2-hemisection in C57Bl/6 mice as compared to uPA knockout mice indicate a potential cell signaling cascade downstream possibly involving beta-integrin and Src, and other pathways. Identification of these uPA-mediated signaling pathways may provide the opportunity to pharmacologically upregulate the synaptic plasticity necessary for recovery of phrenic motoneuron activity following cervical spinal cord injury.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Spinal Cord Injuries  ISOPlau (Mus musculus)6483797; 6483797 RGD 
Spinal Cord Injuries  ISOPlaur (Mus musculus)6483797; 6483797 RGD 
Spinal Cord Injuries  IMP 6483797; 6483797 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Plau  (plasminogen activator, urokinase)
Plaur  (plasminogen activator, urokinase receptor)

Genes (Mus musculus)
Plau  (plasminogen activator, urokinase)
Plaur  (plasminogen activator, urokinase receptor)

Genes (Homo sapiens)
PLAU  (plasminogen activator, urokinase)
PLAUR  (plasminogen activator, urokinase receptor)


Additional Information