Lecture 3: Hematopoiesis Flashcards
Hematopoiesis is regulated by what cytokines?
SCF
IL–1,3,6,7
CSF (G, GM, M)
EPO
B and T lymphocytes stem from
Common lymphoid progenitor
Multipotential hematopoietic stem cell can differentiate into ____ and _____
Common Myeloid Prog.
Common Lymphoid Prog.
These IL’s stilumate TCell differentiation
1,2,4,6,7
These factors stimulate differentiation into common myeloid progenitor
IL1,3,6
GM-CSF
SCF
These factors signal differentiation to common lymphoid progenitor
IL- 2,7,12
SDF-1
TNF-a. TGF-B2
Hematopoiesis occurs in _____ in adults
Bone marrow
Hematopoietic stem cells are ____ and ______
self-renewing
totipotent
HSC’s make ___, ____, and ______
Immune cells, Platelets, RBC’s
Dendritic Cells can originate from what cells?
Monocytes
(usually) MQ/DC Precursor cell
T cell contains ______ Antigen receptor
T cell
B cell contains ____ Antigen receptor
B cell
NK cells contain _____ Antigen receptor
they contain NO antigen-specific receptor
ILC cells contain _______ Antigen receptor
No antigen-specific receptor
Small Lymphocyte cell function
Production of Ab’s (B cells ) or helper and cytotoxic functions (T Cells)
Eosinphils kill ____ via ____
parasites, granule release
Neutrophil major surface marker
CD15
Neutrophils induced by
IL3
GM-CSF
G-CSF
Neutrophil antigen receptor:
None
Monocytes are precursors to
MQ’s and SOME DC’s
Antigen receptors on monocytes:
None
Major surface marker on Monocytes
CD14
These induce monocytes
IL3
GM-CSF
M-CSF
Eosinophils kill what specifically
Ab-Coated parasites
Eosinophil antigen receptors:
None
Eosinophil effector machinery
Cytotoxic granules
lipid mediators
cytokines + chemokines
What induces eosinophil proliferation
T/Mast/Eosinophil-derived IL5
Eosinophils have ___ and ___ receptors
IgE + IgG
Mast cells two functions
Kill parasites
Mediate Allergic response
Mast cell antigen receptor
none
Mast cell surface receptor
IgE receptor
Mast cells found in…
Connective tissues
Mast cells produce…
Cytokines
IL 4, 5, 6, 13
______ induces mast cells
Stem Cell Factor (SCF)
Basophil functions
- effector cells in allergic disorders
- responds to parasites
Basophil receptor (sensor)
IgE receptor
Effector Machinery of Basophils
cytotoxic granules, lipid mediators, chemokines/cytokines
NK cell Antigen receptors
None
NK cell effector machinery is _____ and ______
perforins and granzymes
NK cell two receptor types and function
Fc and MHC
Fc activate
MHC inhibit
NK cell surface markers
CD16, CD56
T cells differentiate in ______
secondary lymphoid tissues
T cells antigen receptors
YES!
T cell functions:
Regulate Humoral and CMIR
T cell effector mechanisms (3)
Cytokines
Cell Surface molecules
Cytotoxic Granules
___ is the defining Antigen for all T cells
CD3
Surface markers for T cells (3)
CD3, CD4, CD8
B cell surface markers
CD19+
CD20+
B cell Antigen receptors
YES!
B cell Receptor (cell surface IG)
Function of B cells
Production of Immunoglobulins (GAME)
B cells are regulated by ___
T cells
B cells can also be activated…
Independently of T cells
Most circulating WBCs are
Neutrophils (40-75%)
Neutrophil enters _____ when there is ______
Tissue
Inflammation
_______ are always entering the tissues
Monocytes
Recombinant ____ and ____ help boost _______ for neutropenia.
GM-CSF
G-CSF
help boost Leukocyte production
Recombinant ______ given for anemia patients?
EPO