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Showing 2 results for Mesenchymal Cell
Falsafinia Gh (msc), Ghorbanian Mt (phd), Lashkarbolouki T (phd), Elahdadi Salmani M (phd),
Volume 14, Issue 2 (6-2012)
Abstract
Background and Objective: Neurotrophic factors are diffusible polypeptides that have critical roles in survival, proliferation and differentiation of stem cells. This study was done to assess the role of neurotrophic factors (CNTF, BDNF, GDNF, NT-3) expression and proliferation rate of neural stem cells (NSCs) in coculture with mesenchymal stem cells (MSCs). Materials and Methods: In this experimental study, NSCs and MSCs were isolated from adult Wistar rat. Initially, NSCs was harvested from temporal lobe after mechanical digestion by a sterile flamed Pasteur pipette and enzymatic digestion with trypsin and Dnase. The cell suspension was cultivated in a flask with DMEM/F12 medium supplemented with 10% FBS 100U/ml Penicillin and 100 mg/ml Streptomycin. To obtain MSCs, bone marrow of femur and tibia bones were flashed out and cultured. MSCs and NSCs cocultured by transwell system in DMEM/F12 medium supplemented with 10% FBS 100U/ml Penicillin and 100 mg/ml Streptomycin. Haemocytometer, immunocytochemistry and RT-PCR methods were performed to identify and evaluate cell proliferation, purity levels and neurotrophic factors expression. Results: There is no differences in NTFs profile of neurotrophic factors expression between coculture group and control NSCs, but interactions between MSCs and NSCs significantly promoted NSCs proliferation (P<0.05). Conclusion: This study showed that coculture of NSCs with MSCs might be prfered in cell-therapy than NSCs.
Mehregan Jamshidi , Seyed Ebrahim Hosseini , Davood Mehrabani , Masoud Amini ,
Volume 21, Issue 2 (7-2019)
Abstract
Background and Objective: The resin secretions of Cannabis sativa are called Hashish, which has medicinal and psychological properties. The most important psychoactive compound of this plant is THC (Delta-9-Tetrahydrocannabinol), which can stimulate cannabinoid receptors in the body. This study was carried out to evaluate the effect of hydroalcoholic extract of Cannabis sativa on cell survival and osteoblastic differentiation of human mesenchymal stem cells.
Methods: In this experimental study, mesenchymal stem cells derived from fat tissue of human abdominal were treated with 100 ng/ml concentration of hydroalcoholic extract of Cannabis sativa. Flow cytometry and RT-PCR techniques were used for detection of cells. The cytotoxic effect of Cannabis sativa extract and osteoblastic differentiation of cells were investigated using MTT method and Alizarin-Red staining, respectively. The karyotype analysis was performed with the preparation of extended metaphase chromosomes.
Results: The identity of the fat mesenchymal stem cells was confirmed by the expression of non-hematopoietic mesenchymal markers (CD90, CD44 and CD73) and the lack of expression of the hematopoietic marker (CD34 and CD45). The Alizarin-Red showed that the treatment with Cannabis sativa has no effect on the osteoblastic differentiation of human fat mesenchymal stem cells, and the treated cells were differentiated into bone cells same as control group. Also, Cannabis sativa extract has no effect on the structure, morphological status and number of chromosomes of these cells.
Conclusion: This study showed that human fat mesenchymal cells in the presence of a hydroalcoholic extract of Cannabis sativa maintain the ability of osteoblastic differentiation. Also, this extract has no effect on the chromosomal karyotype of the cells.
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