Search results for "kapsidi"
showing 5 items of 15 documents
Cytoplasmic parvovirus capsids recruit importin beta for nuclear delivery
2020
Parvoviruses are an important platform for gene and cancer therapy. Their cell entry and the following steps including nuclear import are inefficient limiting their use in therapeutic applications. Two models exist on parvoviral nuclear entry: classical import of the viral capsid using nuclear transport receptors of the importin (karyopherin) family, or direct attachment of the capsid to the nuclear pore complex leading to local disintegration of the nuclear envelope. Here, by laser scanning confocal microscopy and in situ proximity ligation analysis combined with co-immunoprecipitation we showed that infection requires importin β-mediated access into the nuclear pore complex and nucleopori…
Recombinant nanocapsid for targeted theranostic delivery
2017
Developments in diagnostic and therapeutic delivery are trending towards molecular level targeting with nano-platforms. Targeted delivery reduces generalized distribution by localizing diagnostic and/or therapeutic (theranostic) molecules to an intended target site. The first section of this thesis proposes Hepatitis E Virus (HEV) nanocapsids as a vector to stabilize and target theranostic delivery. Derived from the capsid protein of HEV, a feco-orally transmitted virus, HEV-like particles self-assemble in to non-infectious, nanocapsids that can withstand harsh protease and pH conditions in the mucosal system. The flexible nanocapsid surface protrusion domain is amenable to substantial modi…
Immunodetection of VP11, the minor capsid protein of thermophilic bacteriophage P23-77
2015
VP11 on termofiilisen bakteriofagin P23-77 kapsidiproteiini ja se muodostaa ikosahedraalisen kapsidirakenteen yhdessä pääkapsidiproteiinien, virusproteiini (VP)16 ja VP17, kanssa. VP11 tarkkaa paikkaa ja toimintaa kapsidissa ei tiedetä. Aiemmissa tutkimuksissa VP11 on arveltu sijaitsevan joko kapsidikuoren alapuolella tai kapsidin ulkopinnalla piikkirakenteissa. Tutkimuksen tavoitteena oli optimoida VP11 havaitsemisessa käytettävä western blot –menetelmä, arvioida VP11 määrää kapsidissa ja tutkia VP11 sijaintia vasta-ainevärjäyksen ja transmissio elektronimikroskopian (TEM) avulla. Western blot –menetelmän optimoinnissa käytettiin puoli kuivaa (engl. semi-dry) menetelmää vaihtelemalla vasta…
An ancient virus type from extreme environments
2014
Infection-induced chromatin modifications facilitate translocation of herpes simplex virus capsids to the inner nuclear membrane
2021
Herpes simplex virus capsids are assembled and packaged in the nucleus and move by diffusion through the nucleoplasm to the nuclear envelope for egress. Analyzing their motion provides conclusions not only on capsid transport but also on the properties of the nuclear environment during infection. We utilized live-cell imaging and single-particle tracking to characterize capsid motion relative to the host chromatin. The data indicate that as the chromatin was marginalized toward the nuclear envelope it presented a restrictive barrier to the capsids. However, later in infection this barrier became more permissive and the probability of capsids to enter the chromatin increased. Thus, although …