Exosomes are released by various cells, including natural killer (NK) cells and transport signaling molecules for the intercellular communication. Hepatocellular carcinoma (HCC), also known as primary liver cancer, is often inoperable difficult to accurate diagnosis. Notably, prognosis underlying mechanisms of HCC not fully understood. Exosomes-derived NK (NK-exos) express unique cytotoxic prot...

Background: Lenalidomide, a synthetic immunomodulatory drug, has a wide range of features including anti-angiogenic and anti-proliferative properties. To date, researchers have shown that lenalidomide is capable of ameliorating the immune system factors and antitumor responses. Most researchers have reported that lenalidomide enhances the immune response in certain cancer patients through sever...

Background: Schizophrenia has been associated with altered immunity. Different studies regarding natural killer cell activity (NKA) in schizophrenic patients have shown inconsistent results. Objectives: To evaluate NK cell activity in schizophrenic patients in comparison with healthy control individuals.   Methods: 30 medication-free schizophrenic patients and 41 healthy sex, age and smoking st...

hematopoietic cord blood (cb) stem cell transplantation has more advantages to other cell sources because of lower graft versus host disease (gvhd). interleukin-15(il-15) is an immunoregulatory cytokine, known to enhance cytolytic function of cord natural killer (nk) cells. the aim of this study was to investigate the effect of il-15 on nk cytotoxicity simultaneously in different cell death sta...

background: major depressive disorder is a mental disorder characterized by a pervasive and persistent low mood that is accompanied by low self-esteem and loss of interest or pleasure in normally enjoyable activities. depression is associated with multiple immunological disorders. aim of the present study was to determine correlation between percentage of circulating nk cells and major depressi...

Abstract Acute Lymphoblastic Leukemia (ALL) represents the most common pediatric cancer. Significant improvements in chemotherapy regimens caused a leap 5-year survival rates to surpass 90%. However, relapse significantly lowers chances of less than 50% some cases due resistance developed by malignant cells chemotherapy. Natural Killer (NK) are promising immunotherapy alternative for their abil...

Background: Natural killer (NK) cells originate from the differentiation of hematopoietic stem (HSCs) in common lymphoid progenitor pathway, and HSCs can be obtained umbilical cord blood (UCB). Comparative studies NK cell between cultured freshly isolated are important development therapy for cancer. This study aimed to compare maturation stages newly HSC samples using interleukin-2 absence fee...

background: hla-g is a nonclassical hla class i molecule which, when elevated in tumor cells, is one of the main factors involved in tumor evasion of immune responses including nk and t cells. objective: to evaluate the effect of hla-g downregulation on nk cell cytotoxicity in tumor cell lines. methods: the expression level of hla-g was measured by real-time pcr and flowcytometry after transfec...