Engineering polysialic acid on Schwann cells using polysialyltransferase gene transfer or purified enzyme exposure for spinal cord injury transplantation
| Autor: | Urs Rutishauser, Mousumi Ghosh, Damien D. Pearse, Sudheendra N.R. Rao, Alejo A. Morales, Abderrahman El-Maarouf, Warren W. Wakarchuk |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Nervous system Cell 03 medical and health sciences Mice 0302 clinical medicine Immune system Cell Movement medicine Animals Neural Cell Adhesion Molecules Spinal Cord Injuries Innate immune system integumentary system Chemistry Polysialic acid General Neuroscience Cell migration Recovery of Function Sialyltransferases Cell biology Transplantation Disease Models Animal 030104 developmental biology medicine.anatomical_structure nervous system Sialic Acids Neural cell adhesion molecule Schwann Cells 030217 neurology & neurosurgery |
| Zdroj: | Neuroscience letters. 748 |
| ISSN: | 1872-7972 |
| Popis: | Polysialic acid (PolySia) is a critical post-translational modification on the neural cell adhesion molecule (NCAM, a.k.a., CD56), important for cell migration and axon growth during nervous system development, plasticity and repair. PolySia induction on Schwann cells (SCs) enhances their migration, axon growth support and ability to improve functional recovery after spinal cord injury (SCI) transplantation. In the current investigation two methods of PolySia induction on SCs, lentiviral vector transduction of the mouse polysialytransferase gene ST8SIA4 (LV-PST) or enzymatic engineering with a recombinant bacterial PST (PSTNm), were examined comparatively for their effects on PolySia induction, SC migration, the innate immune response and axon growth after acute SCI. PSTNm produced significant PolySia induction and a greater diversity of surface molecule polysialylation on SCs as evidenced by immunoblot. In the scratch wound assay, PSTNm was superior to LV-PST in the promotion of SC migration and gap closure. At 24 h after SCI transplantation, PolySia induction on SCs was most pronounced with LV-PST. Co-delivery of PSTNm with SCs, but not transient cell exposure, led to broader induction of PolySia within the injured spinal cord due to polysialylation upon both host cells and transplanted SCs. The innate immune response after SCI, measured by CD68 immunoreactivity, was similar among PolySia induction methods. LV-PST or PSTNm co-delivery with SCs provided a similar enhancement of SC migration and axon growth support above that of unmodified SCs. These studies demonstrate that LV-PST and PSTNm provide comparable acute effects on SC polysialation, the immune response and neurorepair after SCI. |
| Databáze: | OpenAIRE |
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