病毒感染之免疫反應 Flashcards

1
Q

抗病毒反應中最早出現的是?

A

第一型干擾素IFN-α/β或NK

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2
Q

第一型干擾素主要的分泌來源?

A

pDC

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3
Q

pDC用甚麼辨識病毒的ssRNA和DNA?

A

TLR7&9

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4
Q

受感染細胞會分泌何者警告鄰近細胞?

A

干擾素

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5
Q

受感染細胞用何者辨識細胞質內的病毒RNA?

A

RIG-1

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6
Q

受感染細胞辨識到病毒RNA後,會磷酸化並啟動何者的轉錄因子?

A

IRF3

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7
Q

TLR-3、7、8、9位於哪裡?

A

胞內體膜上

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8
Q

TLR-7辨認何者?

A

病毒的ssRNA

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9
Q

TLR-9辨認何者?

A

細菌和病毒的未甲基化CpG DNA

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10
Q

IFN type 1會促使未受感染細胞分泌?

A
  1. 2’, 5’-oligoadenylate synthetic(使RNAase L活化)
  2. PKR kinase(抑制EIF-2、使細胞凋亡)
  3. Mx protein(抑制病毒複製&轉錄)
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11
Q

第二型IFN分泌來源?

A
  1. NK
  2. Th1
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12
Q

第二型干擾素功能?

A
  1. MHC class I/II表現量上升
    2.進一步活化M1
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13
Q

NK cell活化機制?

A
  1. ADCC
  2. Missing of inhibitory signal
  3. Trail on NK bind to CD4/5
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14
Q

NK的inhibitory signal會辨識何者?

A

MHC class I

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15
Q

Trail誘導細胞凋亡過程?

A

Trail和DR4/5結合,活化Caspase 8

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16
Q

CD8 T cell殺感染細胞機制?

A

perforin打洞,granzymes和granulysin讓細胞凋亡

17
Q

CD4 TH cell功能?

A

1.釋出IL-12活化B cell(TFH)
2.藉由IFN-r活化macrophage(TH1)
3.藉由IL-2活化Tc

18
Q

何種免疫細胞針對胞外細菌和黴菌?

A

ILC3

19
Q

何種免疫細胞辨識胞內細菌病毒,產生IFN-r?

A

ILC1

20
Q

巨噬細胞會製造何種抗病毒分子?

A

1.TNF-α
2.NO
3.IFN-α

21
Q

巨噬細胞用何者辨識病毒?

A

1.TLR-3(dsRNA)
2.TLR-8(ssRNA)

22
Q

皰疹病毒潛伏在哪裡?

A

三叉神經元

23
Q

Antigen drift的例子?

A

HIV, 手足口病

24
Q

Antigen shift例子?

A

流感病毒

25
Q

血球凝集素與神經胺酸酶作用?

A

1.附著
2.出芽