Cancer is one of the most difficult diseases to be treated. The particularities regarding the tumors' occurrence mechanism, their evolution under chemotherapy, disease-free interval, but also the increasing number of patients make cancer an intensively studied health domain. Although introduced in therapy since the early 80s, platinum derivatives play an essential role in anticancer therapy. Th...

Glioblastoma (GBM) is a highly heterogeneous type of tumor characterized by genomic and signaling abnormalities affecting pathways involved in control of cell fate, including tumor-suppressor- and growth factor-regulated pathways. An aberrant miRNA expression has been observed in GBM, being associated with impaired cellular functions resulting in malignant transformation, proliferation and inva...

Mechanisms of Normal Cell Homeostasis ....................................3 Cellular Proliferation .................................................................... 3 Apoptosis .................................................................................... 4 Senescence ................................................................................ 4 Signaling Pathways That Regulate Cel...

E2F transcription factor 3 (E2F3) is oncogenic in tumorigenesis. Alterations in E2F3 functions correspond with poor prognosis in various cancers, underscoring their status for the clinical cancer phenotype. Latest reports discovered intricate networks between microRNAs (miRNAs) and E2F3 in regulating the balance of these events, including proliferation, apoptosis, metastasis, as well as drug re...

Two major classes of small noncoding RNAs have emerged as important regulators of gene expression in eukaryotes, the short interfering RNAs (siRNAs) associated with RNA silencing and endogenous micro-RNAs (miRNAs) implicated in regulation of gene expression. Helper component-proteinase (HC-Pro) is a viral protein that blocks RNA silencing in plants. Here we examine the effect of HC-Pro on the a...

RNA silencing in plants is a natural defense system against foreign genetic elements including viruses. This natural antiviral mechanism has been adopted to develop virus-resistant plants through expression of virus-derived double-stranded RNAs or hairpin RNAs, which in turn are processed into small interfering RNAs (siRNAs) by the host's RNA silencing machinery. While these virus-specific siRN...

microRNAs (miRNAs) are a class of endogenous, single-stranded non-coding RNAs of 20-23 nucleotides in length, functioning as negative regulators of gene expression at the post-transcriptional level. The dysregulation of miRNAs has been demonstrated to play critical roles in tumorigenesis, either through inhibiting tumor suppressor genes or activating oncogenes inappropriately. Besides their pro...

The germinal center (GC) reactions are critical for the production of high-affinity antibodies that comprise protective humoral response elicited by infection or vaccination. GCs initiated through interaction B cells with T follicular helper (Tfh) cells. While transcriptional regulation Tfh differentiation has been studied in great detail, impact micro RNAs (miRNAs) on development and stability...

background: absent in melanoma 2 (aim2) is an intracellular microbial dsdna sensor which plays an important role in production of proinflammatory cytokines through apoptosis associated speck-like protein containing a caspase activation and recruitment domain (asc) and caspase-1. micro-rnas (mirnas) play important roles in regulation of immune related genes. however, there is little information ...