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Objective: Cervical cancer, the most common reproductive system cancer being women, is the fourth leading cause of cancer-related deaths. The use of mesenchymal stem cells (MSCs) for treating various diseases is being studied, but their use in cervical cancer has not been well explored. In this study we study investigated the effect of adipose tissue-derived MSCs on the apoptosis and proliferation of peripheral blood mononuclear cells (PBMCs) in co-culture with the HeLa cell line. MSCs were isolated from adipose tissue and then co-cultured with PBMCs, and HeLa cells at different time points (24, 48, and 72 hours). Materials and Methods: The effect of MSC cells on proliferation, apoptosis, and gene expression of the cytokines tumor necrosis factor alpha (TNF-α), transforming growth factor beta (TGF-β), interleukin (IL)-4, IL-2, and interferon-γ in PBMCs cultured together with HeLa cells was investigated using flow cytometry and real-time polymerase chain reaction (PCR), respectively. Results: Flow cytometry showed that co-culture of PBMCs/MSCs/HeLa significantly increased the proliferation of PBMCs at different time points, with a p-value of 0.0022. In addition, MSCs significantly decreased apoptosis of PBMCs in co-culture with HeLa at 48 h. the p-value was 0.0022. Real-time PCR showed that the expression of TGF-β in PBMCs/MSCs/HeLa co-culture increased after 24 h, with a p-value of 0.006. Conclusion: These data showed that adipose-derived MSCs can stimulate the proliferation and survival of PBMCs and enhance the apoptosis of HeLa cells, indicating their potential as immunomodulatory therapy for cervical cancer cells. However, further research is required to fully understand the underlying mechanisms and optimize therapeutic approaches involving PBMCs and MSCs. [ABSTRACT FROM AUTHOR]

Background: Aquaporins are channel proteins, form pores in the membrane of biological cells to facilitate the transcellular and transepithelial water movement. The role of Aquaporins in carcinogenesis has become an area of interest. In this study, we aimed to investigate the effects of adipose-derived mesenchymal stem cells secreted exosomes on the expression of aquaporin 5 and EGFR genes in the HCT-116 tumor cell line. Methods and results: Surface antigenic profile of Ad-MSCs was evaluated using specific markers. Exosomes were purified from the Ad-MSc supernatant while the quality and the shape of isolated exosomes were assessed by western blot and transmission electron microscopy (TEM) respectively. HCT-116 cells were co-cultured with MSC-conditioned medium (MSC-CM) and/or with 100 μg/ml of MSC-derived exosomes for 48 h and. Real-time PCR was carried out to determine the expression of aquaporin5 and EGFR in HCT-116. Relative expression levels were calculated using the 2-ΔΔct method. Our result showed that AQP5 and EGFR mRNA levels were significantly reduced in CM and/or exosomes treated HCT116 compare to the control group (P-value < 0.05). Conclusion: The current study showed that MSC derived exosomes could inhibit expression of two important molecules involved in tumor progression. Hence it seems MSCs-derived exosomes may hold a hopeful future as drug delivery vehicles which need the furtherer investigation. [ABSTRACT FROM AUTHOR]

Acute myeloid leukemia (AML) and acute lymphocytic leukemia (ALL) are common acute leukemia in adults and children, respectively. In these malignancies, chemotherapy is the main treatment strategy that fails in many cases and is usually associated with adverse effects on healthy cells. In this regard, the development of new therapies is essential. Monoclonal antibodies directed to the cell surface markers of leukemic blasts may have promising consequences with minimal toxic effects on normal cells. Since cluster of differentiation 45Ra (CD45Ra) and CD123 antigens, two considered surface markers of leukemic blasts in AML and ALL respectively, are overexpressed on AML and ALL blasts, CD34+ leukemic progenitors, and AML-LSCs in comparison with normal hematopoietic stem cells (HSCs), they were selected to be targeted; using specific monoclonal antibodies. In this project, CD45Ra+ cells and CD123+ cells were targeted by anti-CD45Ra and/or anti-CD123 monoclonal antibodies. Cytotoxicity effect and cell death induction was determined by 3-(4,5-dimethylthiazol-2-yl)-2-5-diphenyltetrazolium bromide (MTT) assay and flow cytometry. Changes in the expression profile of MCL1, cMyc, Survivin, Id1, and PIM1 genes were assessed by real-time PCR. Statistical analysis of the results showed effective antibody-mediated cytotoxicity and induction of apoptosis in KG1a (CD45Ra+) and Nalm6 (CD123+) cell lines. Also, a significant change in the expression level of some of the apoptosis-related genes was observed. According to the results of this study, it can be concluded that an effective targeting of AML and ALL cancerous cell lines can be performed by anti-CD45Ra and anti-CD123 monoclonal antibodies through their effector functions and apoptosis induction. [ABSTRACT FROM AUTHOR]