TLRs - Innate Immunity Flashcards

1
Q

What PAMPs and DAMPs does TLR1+ and TLR2 recognize?

A

PAMPs - Triacylated lipoproteins (Pam3CSK4) Peptidoglycans, Lipopolysaccharides
-Also, TLR2 responds to the DAMPs of TLR2+ & TLR6

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2
Q

What PAMPs and DAMPs does TLR2+ and TLR6 recognize?

A

PAMPs - diacylated lipoproteins (FSL-1)
DAMPs - Heat shock proteins (HSP 60, 70, Gp96), High mobility group proteins (HMGB1), Proteoglycans (Version, Hyaluronic Acid fragments)

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3
Q

What PAMPs and DAMPs does TLR3 recognize?

A

PAMPs - dsRNA (poly I:C), tRNA, siRNA

DAMPs - mRNA, tRNA

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4
Q

What PAMPs and DAMPs does TLR4 recognize?

A

PAMPs - Lipopolysaccharides (LPS), Paclitaxel
DAMPs - Heat shock proteins (HSP22, 60, 70, 72, Gp96), High mobility group proteins (HMGB1), Proteoglycans (Version, Heparin sulfate, Hyaluronic Acid fragments), Fibronectin, Tenascin-C

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5
Q

What PAMPs and DAMPs does TLR5 recognize?

A

PAMPs - Flagellin

DAMPs - none

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6
Q

What PAMPs and DAMPs does TLR7 recognize?

A

PAMPs - ssRNA Imidazoquinolines (R848), Guanosine analogs (Loxoribine)
DAMPs - ssRNA

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7
Q

What PAMPs and DAMPs does TLR8 recognize?

A

PAMPs - ssRNA, Imidazoquinolines (R848)

DAMPs - ssRNA

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8
Q

What PAMPs and DAMPs does TLR9 recognize?

A

PAMPs - CpG DNA, CpG ODNs

DAMPs - Chromatin IgG complex

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9
Q

What PAMPs and DAMPs does TLR10 recognize?

A

PAMPs - profilin- like proteins

DAMPs - NONE

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10
Q

What TLRs only produce Pro-inflammatory Cytokines (TNF-alpha, IL-6 and IL-12)?

A

TLR1+ & TLR2, TLR2+ & TLR6, TLR5, TLR10

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11
Q

What TLRs produce IFN-beta?

A

TLR3 (dsRNA Poly I:C) and TLR4 (LPS)

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12
Q

What TLRs produce IFN-alpha?

A

TLR7, TLR8 (ssRNA) & TLR9 (CpG-DNA)

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13
Q

What TLRs produce IFN-beta (via IRF3)?

A

TLR3 (dsRNA Poly I:C) and TLR4 (LPS)

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14
Q

What TLRs produce IFN-alpha (via IRF7)?

A

TLR7, TLR8 (ssRNA) & TLR9 (CpG-DNA)

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15
Q

What transcription factor does TLR3 and TLR4 turn on?

A

IRF3

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16
Q

What transcription factor does all TLRs turn on (especially TLR4, TLR1+ & TLR2, TLR2 & TLR6, TLR5)?

A

AP-1, p50 and p65

17
Q

What transcription factor does TLR7, TLR8 and TLR9 turn on?

A

IRF7