Sökning: "T-antigen"

Visar resultat 1 - 5 av 19 avhandlingar innehållade ordet T-antigen.

1. 1. DNA and protein interactions of mouse polyomavirus large T antigen

   Författare :Ola Rönn; Uppsala universitet; []
   Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; T-antigen; DNA-binding; biosensor; enhancer; Biokemi; Biochemistry; Biokemi; Medical Virology; medicinsk virologi;

   Sammanfattning : Polyomaviruses require dividing cells to multiply. The regulatory genes express proteins, theT-antigens, necessary for this to occur. Large T-antigen (LT), is a phosphoprotein withmultiple intrinsic activities, e.g. LÄS MER

3. 2. Studies on the Molecular Biology of the Mouse Pneumotropic Polyomavirus

   Författare :Shouting Zhang; Kristina Dörries; Uppsala universitet; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Molecular biology; murine pneumotropic virus; Kilham mouse polyomavirus; large T antigen; enhancer; regulatory region rearrangement; gene expression regulation; DNA replication; transposable elements; Molekylärbiologi; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

   Sammanfattning : The Murine Pneumotropic Virus (MPtV), in contrast to the other MurinePolyomavirus (MPyV), appears to be non-tumourigenic in its natural host. Instead, MPtV causes acute pneumonia and can serve as a model in studies of polyomavirus-induced disease. In initial experiments, MPtV large T-antigen (LT) was expressed in a heterologous system. LÄS MER

4. 3. Viral Strategies to Regulate Transcription and Pre-mRNA Splicing

   Författare :Shaoan Fan; Uppsala universitet; []
   Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Adenovirus E1B-55kDa; E4-ORF4; E4-ORF6 proteins; L1 mRNA; Polyoma virus small T antigen; regulation; transcription; splicing; PP2A; Biokemi; Biochemistry; Biokemi; Medical Virology; medicinsk virologi;

   Sammanfattning : A typical DNA virus encodes for a few key regulatory proteins that modify the host cell biosynthetic machinery to achieve a selective viral gene statement. One such example is illustrated by the adenovirus E4-ORF4 protein, which form an enzymatically active complex with the serine and threonine-specific protein phosphatase 2A (PP2A). LÄS MER

5. 4. Persistence of polyomavirus : versus immunity to polyoma tumors

   Författare :Zsofia Berke; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :polyomavirus persistence; CD4--; CD8--; IgM--; XID; SCID; TSTA; T-antigen; tumor rejection.;

   Sammanfattning : The aim of this thesis was to understand the role of different specific immune effectors with regard to polyomavirus persistence and polyomavirus induced tumor development. Furthermore, an MHC class I restricted short viral peptide was identified as a target for polyomavirus specific recognition of polyoma tumor cells. LÄS MER

7. 5. p53 and neoplastic progression in Barrett's esophagus

   Författare :Stig Ramel; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Barrett s esophagus; neoplastic progression; flow cytometry; p53 gene; p53protein; 17p allelic loss; p53 mutations; S phase fractions; aneuploidy; SV 40 large T antigen; elastase-SV 40 T antigen transgenic mice.;

   Sammanfattning : Barrett's esophagus is a condition in which the normal squamous epithelium is replaced by columnar epithelium as a response to acid reflux. It develops as a complication in 10-20% of patients with gastroesophageal reflux disease. LÄS MER