RGD Reference Report - Thrombin and protein C pathway in peripheral nerve Schwann cells. - Rat Genome Database
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Thrombin and protein C pathway in peripheral nerve Schwann cells.

Authors: Gera, Orna  Shavit-Stein, Efrat  Bushi, Doron  Harnof, Sagi  Shimon, Marina Ben  Weiss, Ronen  Golderman, Valery  Dori, Amir  Maggio, Nicola  Finegold, Kate  Chapman, Joab 
Citation: Gera O, etal., Neuroscience. 2016 Dec 17;339:587-598. doi: 10.1016/j.neuroscience.2016.10.034. Epub 2016 Oct 19.
RGD ID: 13515125
Pubmed: (View Article at PubMed) PMID:27771530
DOI: Full-text: DOI:10.1016/j.neuroscience.2016.10.034

Thrombin and activated protein C (aPC) bound to the endothelial protein C receptor (EPCR) both activate protease-activated receptor 1 (PAR1) generating either harmful or protective signaling respectively. In the present study we examined the localization of PAR-1 and EPCR and thrombin activity in Schwann glial cells of normal and crushed peripheral nerve and in Schwannoma cell lines. In the sciatic crush model nerves were excised 1h, 1, 4, and 7days after the injury. Schwannoma cell lines produced high levels of prothrombin which is converted to active thrombin and expressed both EPCR and PAR-1 which co-localized. In the injured sciatic nerve thrombin levels were elevated as early as 1h after injury, reached their peak 1day after injury which was significantly higher (24.4±4.1mU/ml) compared to contralateral uninjured nerves (2.6±7mU/ml, t-test p<0.001) and declined linearly reaching baseline levels by day 7. EPCR was found to be located at the microvilli of Schwann cells at the node of Ranvier and in cytoplasm surrounding the nucleus. Four days after sciatic injury, EPCR levels increased significantly (57,785±16602AU versus 4790±1294AU in the contralateral uninjured nerves, p<0.001 by t-test) mainly distal to the site of injury, where axon degeneration is followed by proliferation of Schwann cells which are diffusely stained for EPCR. EPCR seems to be located to cytoplasmic component of Schwann cells and not to compact myelin component, and is highly increased following injury.

Annotation

Disease Annotations    

Gene Ontology Annotations    

Cellular Component

Objects Annotated

Genes (Rattus norvegicus)
Procr  (protein C receptor)

Genes (Mus musculus)
Procr  (protein C receptor, endothelial)

Genes (Homo sapiens)
PROCR  (protein C receptor)


Additional Information