The cancer stem cell model proposes that tumors have a hierarchical organization in which tumorigenic cells give rise to non-tumorigenic cells, with only a subset of stem-like cells able to propagate the tumor. In the case of prostate cancer, recent analyses of genetically engineered mouse (GEM) models have provided evidence supporting the existence of cancer stem cells in vivo. These studies s...

BACKGROUND Chromobox protein homolog 7 (CBX7), a member of the polycomb group (PcG) family of proteins, is involved in the regulation of cell proliferation and cancer progression. PcG family members, such as BMI, Mel-18, and EZH2, are integral constituents of the polycomb repressive complexes (PRCs) and have been known to regulate cancer stem cell (CSC) phenotype. However, the role of other PRC...

background: perioglasâ (pg) is an alloplastic material used for grafting periodontal osseous defects since 1995. in animal models, it has been proven that pg achieves histologically good repair of surgically created defects. in clinical trials, pg was effective as an adjunct to conventional surgery in the treatment of intrabony defects. because the molecular events due to pg that are able to al...

background: retinoic acid as one of the most important regulators for cell differentiation was examined in this study for differentiation of human umbilical mesenchymal cells (hucm). methods: after isolation, hucm were evaluated for mesenchymal stem cell properties by flow cytometry and alkaline phosphatase assay. also, doubling time of the cells and their differentiation potential into adipoge...

background: stem cell therapy is a new treatment option for different diseases. the aim of this systematic review is assessing the articles that focus on sct in iran and evaluate the amount of their success, failure and complication. methods: systematic search was conducted for finding english and persian papers (controlled trials and cohort studies with follow up) published before march 2015. ...

the increased risk of hemolytic reactions and erythrocyte recovery delay in abo incompatible hematopoietic stem cell transplantation (hsct) is well established. effects of abo incompatibility on transplantation outcomes is evaluated in this study. we prospectively followed 501 patients undergoing allogeneic stem cell transplantation according to abo compatibility groups of minor, major and bidi...

autoimmune diseases have been described as an interesting and poorly understood group of disorders. there are many challenges in the respective scientific societies concerning the nature, causes and the therapeutic approaches of these diseases. in accordance with the evidences the nature and etiology of these disorders is multifactorial and complex but the clearest definition could be expressed...

introduction: the field of stem cell biology and regenerative medicine is rapidly moving toward translation to clinical practice. stem cell therapy seems to be a new treatment option for some diseases. so, tracking the distribution of stem cells is crucial to their therapeutic use. based on this fact we labeled human mesenchymal stem cells (mscs) with 111in- oxine for the first time in our coun...

mobile phone use and wireless communication technology have grown explosively over the past decades. this rapid growth has caused widespread global concern about the potential detrimental effects of this technology on human health. stem cells generate specialized cell types of the tissue in which they reside through normal differentiation pathways. considering the undeniable importance of stem ...

objective: this study presents an efficient, cost-effective method to improve proliferation and colonization of spermatogonial stem cells (sscs) in vitro. methods: isolated sscs from neonate mice were cultured in dmem culture medium with 10% fetal bovine serum (fbs). in the first phase of the study, the temperature was controlled by low intensity pulsed ultrasound stimulation (lipus) of the pla...