hematopoiesis dr. lesina [modo de compatibilidad] · 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90...
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HEMATOPOYESIS
Dr Blaz LesinaOtoño de 2009
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2.5 billones de Gr Kg/peso/día
2.5 billones de Plq Kg/peso/día
1 billon de Gran Kg/peso/día
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1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90
AC
TIV
IDA
D H
EM
AT
OP
OY
ET
ICA
20
40
60
80
100
Saco vitelino
Hígado
Bazo
Médula ósea
Tibia
Femur
Costilla
Esternón
Vértebra
Meses de gestación
Nacimiento
Edad en años
Esqueleto 600 gr de tejido hematopoyético70% pelvis, vértebras y esternón
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Routes a stem cell can take
self-renew
differentiate
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Hematopoietic Cell DifferentiationCFU-L pluripotential blast colony-forming cell self renew
lymphocyte
CFU-GEMM self renew
BFU-E CFU-GM CFU-Eo CFU-Bas CFU-Meg
CFU-E CFU-G CFU-M
erythrocyte neutrophil monocyte eosinophil basophil megakaryocyte
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Plasticidad Célula troncal Tejido
convencionalTejido no convencional
Referencias
Hematopoyética Células de la sangre
Nervioso epitelial hepático músculo esquelético y cardiaco
Petersen 1999, Krause 2001
Neuronal Nervioso Sangre músculo Bjornson1999, Galli 2000
Muscular Muscular Nervioso sangre Gussoni 1999, Jackson 1999
Mesenquimática Óseo, cartílago adiposo músculo mervioso pulmón estroma hematopoyético renal
Koppen 1999, Ito 2001
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Dale, D. C. et al. Blood 2008;112:935-945
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CD34CD34+, +,
CD38CD38--, ,
cc--kitkit+ + (CD117)(CD117)
CD34CD34+, +,
CD38CD38--
cc--kitkit++
CD38CD38++, ,
CD3,CD3,
CD4, CD4,
CD8,…….CD8,…….
Lodish y cols.: ”Molecular Cell Biology”.5º Ed. W.H. Freeman 2004
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Hematopoietic Microenvironment
Stromal cells:fibroblastsendothelial cellsadipocytes
Growth Factors
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SCF IL-6 GM-CSF
G-CSF
SCF: stem cell factorGM-CSF: granulocyte-macrophage colony-stimulating factorG-CSF: granulocyte colony-stimulating factor
Basal Hematopoiesis
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TNFαααα
IL-3GM-CSFIL-4
IL-1
TNFαααα
IL-1
SCFIL-6
GM-CSFG-CSF
Ag
Ag
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Papayannopoulou, T. et al. Blood 2008;111:3923-3930
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5 fundamentos (1978)
►Sitio anatómico definido
►Lugar donde sostenerse y reproducirse
►Lugar donde se inhibe la diferenciación
►Espacio limitado que limita el n de cél
►Lugar donde cél mas maduras puedan revertirse a stem cell
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Genes involucrados en la decisión de linaje
►HOX
►GATA
►PAX
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Dick, J. E. Blood 2008;112:4793-4807
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Multilevel targeting of hematopoietic stem cell self-renewal, differentiation and apoptosis for leukemia therapy Tsiftsoglou AS, Bonovolias ID, Tsiftsoglou SA. Pharmacol Ther. 2009 Mar 21.
GATA-2 L359 V mutation is exclusively associated with CML progression but not other hematological malignancies and GATA-2 P250A is a novel single nucleotide polymorphism Zhang SJ, Shi JY, Li JY.Leuk Res. 2009 Mar 20.
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Potencialidad de multilinaje
8 7 6 5 4 3 2 1
Auto renovación
Diferenciación
Factor de crecimiento 1
Factor de Crecimiento 2
Factor de Crecimiento 3
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Maduración celular
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Eritron
CFU-S
CFU-GM
CFU-MK
BFU-E CFU-E
PROERITROBLASTO
ERITROBLASTO BASOFÍLICO
ERITROBLASTO POLICROMATICO
ERITROBLASTO ORTOCROMATICO
RETICULOCITO ERITROCITO
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Poliferación y maduración del eritron
3 a 5 divisiones 8 a 32 celulas
BFU-E CFU-E
PROERITROBLASTO
ERITROBLASTO BASOFÍLICO
ERITROBLASTO POLICROMATICO
ERITROBLASTO ORTOCROMATICO
RETICULOCITO ERITROCITO
12-15 días
3-5 divisiones
No se dividen
IL3 EPOSintesis de
hemoglobina
Expulsión del nucleo 30-60’
Secuestrado 1-2 días en el bazo
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Lodish y cols.: ”Molecular Cell Biology”.5º Ed. W.H. Freeman 2004
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Chasis, J. A. et al. Blood 2008;112:470-478
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Chasis, J. A. et al. Blood 2008;112:470-478
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Granulopoiesisbone marrowprecursors proliferating mature/storage blood tissue
myeloblast segmented
GM-CFU circulating
31x107/kg
bandpromyelocyte
myelocyte marginating
GEMM-CFU 39x107/kg
metamyelocyte 1.5x109/kg day-1
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Metcalf, D. Blood 2008;111:485-491
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Metcalf, D. Blood 2008;111:485-491
Hematopoietic cytokines are polyfunctional
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Metcalf, D. Blood 2008;111:485-491
The confusing nature of some hematopoietic cytokines as illustrated by LIF
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BlastoBlasto
GránulosGránulos
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Thrombopoiesis
Bone MarrowPrecursors Proliferating Endoreduplicating Blood Tissue
CFU-Meg 1N 2N 8N 32N
Megakaryoblast
Megakaryocyte
CFU-GEMM
Platelets
Circulating
and
Marginating
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LMA
LLA LLC
LMC
LINFOMAS
Neoplasias hematológicas
Mieloma
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