extra Flashcards
effector memory T cell markers
CD45RO; no CCR7 or L-selectin
central memory T cell markers
CD45RO, CCR7, L-selectin, and CD44
naive T cell markers
CD45RA, CCR7, L-selectin
myeloid cell markers
no CCR7 or L-selectin
CD8+ cells
kill virus-infected cells
CD4+ Th1 cells
activate infected macrophages and help B cells; for listeria or mycobacteria
CD4+ Th2 cells
switch B cells to IgE by releasing IL-4; for parasites
CD4+ Th17 cells
recruit neutrophils and barrier integrity; for fungi and pneumonia
CD4+ Tfh cells
antibody production
CD4+ Treg cells
suppress T cells
CD45RA
naive T cells
CD45RO
memory marker
ICAM-1,2,3
on endothelial cells; binds LFA-1 and Mac-1 for adhesion
VCAM-1
on endothelial cells; binds VLA-4 for adhesion
L-selectin
on naive T cells and promotes migration into HEVs by binding PNAds
PNAds
GlyCAM-1, CD34 for slow rolling
P & E-selectins
on non-lymphoid tissue (bind core-2 glycans)
CCR9
gut specific T cell chemokine receptor
CCR7
T cell chemokine receptor
CCL19/CCL21
chemokines that bind CCR7
MadCAM-1/a4b7
bind L-selectin in gut
CXCR4/CXCL12
diapedesis
IL-1
most potent, part of acute phase response and lymphocyte activating factor; released by macrophages
IL-3
maintains stem cells and progenitors and induces proliferation; released by Th1 and Th2 cells
IL-4
makes Th2 for IgE production; released by basophils
IL-5
eosinophil generation; IgA class switch
IL-6
metabolism, heat generation; makes Th17 and Tfh
IL-7
induces lymphoid lineage
IL-8
attracts neutrophils; angiogenic factor
IL-10
resolution
IL-12
enhances production of IFN-gamma by NK cells and T cells; Th1 induction
IL-15
makes NK cells
IL-17
recruits PMNs
IL-23
stimulate Th17
IL-21
stimulate Th17; cell proliferation
TNF-alpha
vessel permeability
type I IFN
antiviral
TGF-beta
makes Treg
innate response to virus
virus –> NK cells/pDCs –> type I IFN –> DCs –> CD8+ –> IFN-gamma –> IgG
innate response to IC bacteria
macrophages –> IL-12 –> DCs –> Th1 –> IFN-gamma –> IgG
innate response to EC bacteria/fungi
macrophages/neutrophils –> IL-23 –> DCs –> Th17 –> IL-17 –> IgG/IgA
innate response to parasites
eosinophils/basophils –> IL-4 –> DCs –> Th2 –> IL-4 –> IgE
type I hypersensitivity
IgE-mediated response to allergies
type II hypersensitivity
IgM or IgG-mediated response to self-antigens
type III hypersensitivity
IgG-mediated response to antigen-antibody complex (serum sickness)
type IV hypersensitivity
cell-mediated dermatitis from Th1 macrophage activation
CD4 releases _ for Th1 stimulation
IL-12
CD4 releases _ for Th2 stimulation
IL-4
CD4 releases _ for Th17 stimulation
IL-1, IL-6, IL-21
CD4 releases _ for Treg stimulation
TGF-beta
CD4 releases _ for Tfh stimulation
IL-6, IL-21
Th1 releases _
IFN-gamma
Th2 releases _
IL-4
Th17 releases _
IL-17
Treg releases _
TGF-beta
Tfh releases _
IL-21