objective: recent evidences suggest that tumors arise from a small subpopulation of cells, the cancer stem cells (cscs) or tumor initiating cells. cscs are able to resist the conventional methods of cancer therapy due to existence of abc transporters on their surface. this leads to csc resistance and maintenance resulting in post-treatment relapse and metastasis. therefore, precise identificati...

objective: bone marrow mesenchymal stem cells reside in bone marrow and support homing and differentiation of hematopoietic stem cells (1). this makes them an excellent instrument for regenerative treatment and co-culture with the hsc. materials and methods: in this study, k562 cell lines were treated with butyric acid(for erythroid differentiation), co-cultured with mesenchymal stem cells and ...

background: as condition and component of culture determine fate map of spermatogonial stem cells (sscs), the aim of this study was to evaluate of growth factors gdnf, lif and ra on proliferation and differentiation of ssc. materials and methods: sscs were cultured in two groups: the first group gdnf and lif and the second group ra. the number of clumps and colony formation was monitored during...

abstract the antineoplastic activities of alcoholic and aqueous extracts of the roots, stems and leaves of isatis campylocarpa an endemic species of the brassicaceae family from iran, investigated on the growth of jurkat as an acute lymphocytic leukemia cell line, k562 as a chronic myelogenous leukemia cell line and fen as a bladder cancer cell line using colorimetric assay. results showed that...

objective(s):to culture thein vitro mouse embryonic stem cells (mescs) and to direct their  differentiation to germ-line cells; in present study we used a vector backbone containing the fusion construct stra8-egfp to select differentiated es cells that entered meiosis.  retinoic acid was used to differentiate embryonic stem cells to germ cells. materials and methods: a fragment of stra8 gene pr...

nano-silver (agnp) has biological properties which are significant for consumer products, food technology, textiles and medical applications (e.g. wound care products, implantable medical devices, in diagnosis, drug delivery, and imaging). for their antibacterial activity, silver nanoparticles are largely used in various commercially available products. thus, the use of nano-silver is becoming ...

background: p19 cells are mouse embryonic carcinoma cells which contain pluripotent ability, like stem cells, to differentiate into different cell lines. there are several properties for this cell line that make it a valuable cell model for study of developmental stages. methods: at the first step, pts2-egfp coding sequence which was cloned in pucd2.hygro vector was used for transfection in to ...