3.2 Razmnoževanje Virusov Flashcards

1
Q

Kje poteka

A

Samo v živih celicah
Virusi nimajo sistemov za replikacijo
Potrebujejo energijo in organele gostiteljske celice

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2
Q

Potek razmnoževanja

A
  1. Virus propade
  2. Virusna NK prevzame nadzor nad celično presnovo (obdobje virusnega mrka)
  3. Obdobje zorenja - množenje virusnega genoma, sinteza proteinov
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3
Q

Kaj je prvi korak razmnoževanja virusov

A

Vstop virusa v celico
- omogočajo ligandi na površini kapside ali virusne ovojnice

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4
Q

Tabelica rinovirus

A

Ligand: VP1, VP2, VP3
Tarčna celica: epitelij sluznice dihal
R: ICAM-1

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5
Q

Tabelica virus influence

A

Ligand: hemaglutinin (HA)
Epitelij sluznice dihal
R: sialoglikoprotein

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6
Q

Tabelica virus parainfluence

A

Ligand: hemaglutinin-nevraminidaza (HN)
Epitelij sluznice dihal
R: gangliozidi GD1a, GQ16

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7
Q

Tabelica hiv

A

Ligand: ovojični ligand gp120
Limfociti — CXCR4 (CD3 in CXCR3)
Makrogagi — CCR5

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8
Q

Tabelica poliovirus

A

Ligand: VP1
Epitelij sluznice prebavil, nevroni
R: Ig podobne molekule

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9
Q

Tabelica rotavirus

A

Ligand: VP4, VP7
Epitelij sluznice prebavil
R: sialoglikoprotein

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10
Q

Tabelica EBV

A

Ligand: gp220, gp350
Limfociti B, epitelij ustne in žrelne sluznice
R: CD21, CR2

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11
Q

Tabelica citomegalovirus

A

Ligand: H301
Epitelijske celice
R: antigen MHCI

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12
Q

Tabelica adenovirus

A

Ligand: proteinska palčka
Epitelij sluznice dihal in prebavil
R: antigeni MHCII

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13
Q

Tabelica virus vakcinije

A

Ligand: protein VGF
Epitelijske celice
R: EGF receptor

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14
Q

Tabelica virus stekline

A

Ligand: G protein
Mišične celice, nevroni
R: ACh receptorji

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15
Q

Vtop virusa v celico načini

A
  • translokacija
  • endocitoza
  • fuzija
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16
Q

Kako prehajajo v celico virusi z ovojnico in kako tisti brez?

A

Brez ovojnice: translokacija ali endocitoza
Ovojnica: fuzija

17
Q

Kje se podvaja virusna DNA in kje RNA?

A

Dna: jedro
Rna: citoplazma

18
Q

Kje poteka cepljenje virusnih proteinov?

A

GA in v transportnih veziklih

19
Q

Kje se sestavljajo virusi?

A

DNA: v jedru - razen poksvirusov
RNA: v citoplazmi - razen ortomiksovirusov

20
Q

Kako se sprostijo virusi?

A

Z ovojnico: navadno z brstenjem
Brez obojnice: navadno z lizo celice

21
Q

Kaj se zgodinpo vstopu v celico

A
  • odstranjevanje kapside ali slačenje
  • vlogo imajo znotrajcelične proteaze
22
Q

Poksvirusi slačenje

A
  • proteaze - zunanji ovoj
  • virusni encimi - sredica
23
Q

Slačenje retrovirusi

A
  • se ne konča
  • genom ostane znotraj delno razgrajene kapside
24
Q

Slačenje virusi z ovojnico

A
  • začne se z odstranjevanjem ovojnice