Kromatiinin rakennemuutosten vaikutus HSV-1 – kapsidien sijaintiin tumassa

Tyypin 1 Herpes Simplex –virus on maailmanlaajuisesti levinnyt yleinen virus. Se leviää yleisimmin limakalvokontaktissa ja voi aiheuttaa huuliherpeksen. Virus aiheuttaa lyyttisen infektion epiteelisoluissa. Infektio voi myöhemmin levitä myös aluetta hermottaviin hermosoluihin, joissa se aiheuttaa...

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Main Authors: Lahtinen, Nuutti, Koivisto, Ida, Vartiainen, Jennika
Other Authors: Matemaattis-luonnontieteellinen tiedekunta, Faculty of Sciences, Bio- ja ympäristötieteiden laitos, Department of Biological and Environmental Science, Jyväskylän yliopisto, University of Jyväskylä
Format: Bachelor's thesis
Language:fin
Published: 2021
Subjects:
Online Access: https://jyx.jyu.fi/handle/123456789/79468
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author Lahtinen, Nuutti Koivisto, Ida Vartiainen, Jennika
author2 Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Bio- ja ympäristötieteiden laitos Department of Biological and Environmental Science Jyväskylän yliopisto University of Jyväskylä
author_facet Lahtinen, Nuutti Koivisto, Ida Vartiainen, Jennika Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Bio- ja ympäristötieteiden laitos Department of Biological and Environmental Science Jyväskylän yliopisto University of Jyväskylä Lahtinen, Nuutti Koivisto, Ida Vartiainen, Jennika Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Bio- ja ympäristötieteiden laitos Department of Biological and Environmental Science Jyväskylän yliopisto University of Jyväskylä
author_sort Lahtinen, Nuutti
datasource_str_mv jyx
description Tyypin 1 Herpes Simplex –virus on maailmanlaajuisesti levinnyt yleinen virus. Se leviää yleisimmin limakalvokontaktissa ja voi aiheuttaa huuliherpeksen. Virus aiheuttaa lyyttisen infektion epiteelisoluissa. Infektio voi myöhemmin levitä myös aluetta hermottaviin hermosoluihin, joissa se aiheuttaa latentin infektion. Virus replikoituu isäntäsolun tumassa, jossa tapahtuu myös uusien kapsidien kokoaminen. Isäntäsolun perimä on pakattu tumaan pieneen tilavuuteen kromatiiniksi, jonka rakenne vaikuttaa siihen, miten viruskapsidit pääsevät liikkumaan tumassa. Herpesinfektio aiheuttaa isäntäsolun tuman rakenteissa muutoksia, joihin kuuluu replikaatioalueiden laajeneminen, kromatiinin pakkautuminen tuman reunoille sekä tuman koon kasvaminen. Tumassa kapsidit liikkuvat diffuusion avulla pääasiassa kromatiinin välitiloissa ja poistuvat kuroutumalla sisempään tumakalvoon. Tässä tutkielmassa pyrimme selvittämään, vaikuttaako isäntäsolun tuman kromatiinin rakenteen muuntelu siihen, miten tyypin 1 Herpes Simplex -viruskapsidit sijoittuvat tumassa. Tämän selvittämiseksi Vero-solulinjan solujen kromatiinia kondensoitiin tai dekondensoitiin, ja solut infektoitiin viruksilla. Näytesolut immunoleimattiin ja kuvattiin konfokaalimikroskoopilla. Kuvista havaittiin, että viruskapsidit pääsivät dekondensoitujen solujen kromatiinin sekaan paremmin kuin kondensoitujen. Kuitenkaan kapsidijakaumissa ei näkynyt merkittävää eroa. Kapsidijakauma oli samankaltainen lähes koko mittausalueella, mikä poikkesi odotetusta. Type 1 Herpes Simplex virus (HSV-1) is a common globally spread virus. It is transmitted most commonly by direct mucous membrane contact and it can be a cause of cold sores. The virus causes a lytic infection in epithelial cells. The infection can later spread to nerve cells innervating the area where it causes a latent infection. Replication of the virus takes place inside the nucleus of a host cell where also progeny capsids are assembled. The genome of a host cell is packed in the nucleus into a smaller volume as chromatin and its structure affects how the capsids move in the nucleus. Herpes infection leads to structural changes in the host cell’s nucleus including chromatin marginalization to nucleus’s periphery and expansion of the nucleus and viral replication compartment. In the nucleus capsids move by diffusion mainly in interchromatin spaces and egress by budding into the inner nuclear membrane. In this study our goal was to examine if the changes in host cell’s chromatin structure affects the localization of the type 1 Herpes Simplex virus capsids in the nucleus. This was studied by condensing or decondensing the chromatin structure of infected Vero cells. Sample cells were immunolabeled and imaged using confocal microscopy. Image data analyses showed that the viral capsids had better access into the chromatin in the decondensed cells than in the condensed cells. However, no significant difference was seen in the capsid distributions. The capsid distribution was similar over almost the entire measuring range which differed from the expected.
first_indexed 2024-09-11T08:51:09Z
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Se \nlevi\u00e4\u00e4 yleisimmin limakalvokontaktissa ja voi aiheuttaa huuliherpeksen. Virus \naiheuttaa lyyttisen infektion epiteelisoluissa. Infektio voi my\u00f6hemmin levit\u00e4 my\u00f6s \naluetta hermottaviin hermosoluihin, joissa se aiheuttaa latentin infektion. Virus \nreplikoituu is\u00e4nt\u00e4solun tumassa, jossa tapahtuu my\u00f6s uusien kapsidien \nkokoaminen. Is\u00e4nt\u00e4solun perim\u00e4 on pakattu tumaan pieneen tilavuuteen \nkromatiiniksi, jonka rakenne vaikuttaa siihen, miten viruskapsidit p\u00e4\u00e4sev\u00e4t \nliikkumaan tumassa. Herpesinfektio aiheuttaa is\u00e4nt\u00e4solun tuman rakenteissa\nmuutoksia, joihin kuuluu replikaatioalueiden laajeneminen, kromatiinin \npakkautuminen tuman reunoille sek\u00e4 tuman koon kasvaminen. Tumassa kapsidit \nliikkuvat diffuusion avulla p\u00e4\u00e4asiassa kromatiinin v\u00e4litiloissa ja poistuvat \nkuroutumalla sisemp\u00e4\u00e4n tumakalvoon. 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In this study our goal was to examine if the changes in host cell\u2019s \nchromatin structure affects the localization of the type 1 Herpes Simplex virus \ncapsids in the nucleus. This was studied by condensing or decondensing the \nchromatin structure of infected Vero cells. Sample cells were immunolabeled and \nimaged using confocal microscopy. Image data analyses showed that the viral \ncapsids had better access into the chromatin in the decondensed cells than in the \ncondensed cells. However, no significant difference was seen in the capsid \ndistributions. 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spellingShingle Lahtinen, Nuutti Koivisto, Ida Vartiainen, Jennika Kromatiinin rakennemuutosten vaikutus HSV-1 – kapsidien sijaintiin tumassa kromatiinin kondensaatio kromatiinin dekondensaatio lyyttinen infektio tyypin 1 Herpes Simplex- virus Solu- ja molekyylibiologia Cell and molecular biology 4013 virukset tuma virustaudit infektiot
title Kromatiinin rakennemuutosten vaikutus HSV-1 – kapsidien sijaintiin tumassa
title_full Kromatiinin rakennemuutosten vaikutus HSV-1 – kapsidien sijaintiin tumassa
title_fullStr Kromatiinin rakennemuutosten vaikutus HSV-1 – kapsidien sijaintiin tumassa Kromatiinin rakennemuutosten vaikutus HSV-1 – kapsidien sijaintiin tumassa
title_full_unstemmed Kromatiinin rakennemuutosten vaikutus HSV-1 – kapsidien sijaintiin tumassa Kromatiinin rakennemuutosten vaikutus HSV-1 – kapsidien sijaintiin tumassa
title_short Kromatiinin rakennemuutosten vaikutus HSV-1 – kapsidien sijaintiin tumassa
title_sort kromatiinin rakennemuutosten vaikutus hsv 1 kapsidien sijaintiin tumassa
title_txtP Kromatiinin rakennemuutosten vaikutus HSV-1 – kapsidien sijaintiin tumassa
topic kromatiinin kondensaatio kromatiinin dekondensaatio lyyttinen infektio tyypin 1 Herpes Simplex- virus Solu- ja molekyylibiologia Cell and molecular biology 4013 virukset tuma virustaudit infektiot
topic_facet 4013 Cell and molecular biology Solu- ja molekyylibiologia infektiot kromatiinin dekondensaatio kromatiinin kondensaatio lyyttinen infektio tuma tyypin 1 Herpes Simplex- virus virukset virustaudit
url https://jyx.jyu.fi/handle/123456789/79468 http://www.urn.fi/URN:NBN:fi:jyu-202201241244
work_keys_str_mv AT lahtinennuutti kromatiininrakennemuutostenvaikutushsv1kapsidiensijaintiintumassa