Brain stem cell transplantation daring mild hypothermia treatment of patients with traumatic brain injuries
10.3760/cma.j.issn.1001-8050.2010.07.021
- VernacularTitle:创伤性脑损伤亚低温治疗期间实施干细胞移植的实验研究
- Author:
Tiezhu MA
;
Xiaozhi LIU
;
Sai ZHANG
- Publication Type:Journal Article
- Keywords:
Brain injuries;
Hypothermia,artificial;
Stem cells;
Transplantation
- From:
Chinese Journal of Trauma
2010;26(7):640-643
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the feasibility of stem cell transplantation under mild hypothermia so as to provide a prerequisite for stem cell transplantation in patients with traumatic brain injuries (TBI) during mild hypothermia treatment. Methods After transfecting plasmid containing temperature-sensitive simian virus 40 large T-antigen (tsSV40LT) into temperature-sensitive umbilical cord mes-enchymal stem cells (tsUCMSCs) , the changes of cell morphology, nuclear proliferation index (PIx) and telomerase activity were detested when the tsUCMSCs were cultured at 33℃ and 37℃. After the mouse model with tTBI treated with mild hypothermia was established, tsUCMSCs were transplanted into semi-injury area to detect survival rate, proliferation and apoptosis indices and perform neurological deficit scoring. Results When cultured at 33℃, the tsUCMSCs displayed long spindle-shaped and highly refractive, with higher proliferation index and telomerase activity than those cultured at 37℃. Compared with control group (non-temperature-sensitive UCMSCs transplantation), tsUCMSCs in semi-injury area showed much higher cell survival and proliferating cell nuclear antigen expression ( P < 0.05 ) , with fewer apoptotic cells and better neurological function (P < 0.05). Conclusion The establishment of temperature-sensitive stem cell line enables stem cell transplantation during treatment of TBI with mild hypothermia, as provides us a new direction for treatment of TBI.
