Perineurial fibroblasts are of mesenchymal origin and form the perineurium. The perineurium plays an important role in maintaining the integrity of the internal peripheral nerve environment by creating a physical barrier that, under physiologic condition, limits the entry of biologically active proteins, infectious agents, and blood-borne cells into the nerve bundles [1]. The perineurial fibroblasts are characterized by distinct ultrastructural features, including non-branching thin cytoplasmic processes coated by an external lamina and joined at their ends by a tight junction, few organelles, actin and vimentin filaments, and numerous pinocytotic vesicles [2]. Perineurial fibroblasts are initially recruited from the surrounding mesenchyme to form a loose, permeable sheath around axons and Schwann cells, where they are separated by the extracellular matrix. These cells later undergo a mesenchymal-to-epithelial transition to form tight junctions and organize into the perineurium. Perineurial fibroblasts are immunoreactive for vimentin and epithelial membrane antigen but not for the Schwann cell marker S-100 [3].
Recommended Medium
It is recommended to use Fibroblast Medium (FM, Cat. No. SC2301) for culturing RPNF in vitro.
Product Use
This product is for research use only. It is not approved for use in humans, animals, or in vitro diagnostic procedures.
Storage
Upon receiving, directly and immediately transfer the cells from dry ice to liquid nitrogen and keep the cells in liquid nitrogen until they are needed for experiments.
Shipping
Dry ice
Warranty
Cells are only warranted if ScienCell media and reagents are used and the recommended protocols are followed.
References
[1] Salzer, J. L. (1999) Creating barriers: a new role for Schwann cells and desert hedgehog. Neuron 22:627629.
[2] Erlandson, R. A. (1991) The enigmatic perineurial cell and its participation in tumors and in tumor like entities. Ultrastruct Pathol. 15:335-351.
[3] Ariza, A., Bilbao, J. M. and Rosai, J. (1988) Immunohistochemical detection of epithelial membrane antigen in normal and perineurial cells and perineurioma. Am J Surg Pathol. 12:678-683.