Cellular pathology critical review assignment Essay

Cellular pathology critical review denomination - Essay Exampleules A and B, which present viral peptides to the cytotoxic T-lymphocytes, thereby avoiding their clearance from the body which leads to innovation of infection and later malignancy. For the in vitro contemplate immortalized human keratinocyte kiosk line HaCaT, primary bovine PalF cells and NIH 3T3 cell lines which expressed the HPV-16 E5 protein was utilise and some NIH 3T3 expressed HPV-6 E5. After subsequent culture, suitable immunological assays were carried out to learn the presence and localization of the MHC class I molecules in these cells. While in the control cell lines MHC molecules were localised both in the cell surface and within the GA, in the HPV-16 E5 expressing cells the molecules were found exclusively in the GA. The study also showed that HPV-16 E5 did not affect the synthesis of MHC molecules unlike BPV E5 and that the flavor of the E5 protein did no affect the transporter protein creditworthy for the transport of MHC molecules. To determine the effect of interferon, all the cell lines were treated with interferon , which resulted in all the cell lines having alike(p) levels of MHC molecules and also the molecules were found on the cell surface in the E5 expressing cell lines thus proving that the inhibition on transport of MHC molecules is reversed upon treatment with interferon. The study also noted that E5 did not down regulate the expression of HLA-C and E, tangled in inhibiting NK cell-mediated lysis.The two most striking limitations observed is the study was carried out in vitro and in vivo reproducibility needs to be ascertained and secondly, the detection of the E5 protein was carried out by RT-PCR rather simpler techniques. The two major strengths include this is the first paper to show the immune evasion mechanism by the HPV E5 protein and the cell lines used are a good model for understanding the mechanism and finally, the study explores the gene level expre ssions involved in the down regulation process of the MHC molecules.In