NANOTECHNOLOGIES POUR L’ADRESSAGE DE MEDICAMENTS … · 2010. 8. 19. · 129 mice after the...
Transcript of NANOTECHNOLOGIES POUR L’ADRESSAGE DE MEDICAMENTS … · 2010. 8. 19. · 129 mice after the...
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NANOTECHNOLOGIES POUR L’ADRESSAGE DE
MEDICAMENTS AU NIVEAU CEREBRALP.COUVREUR
Professeur au Collège de FranceChaire d’innovation Technologique
2009-2010
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HISTOLOGY OF BBB
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MECHANISMS OF TRANSPORT THROUGH THE BBBhttp://pubs.acs.org
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LES NANOPARTICULES PEUVENT-ELLES SERVIR DE « CARGO » POUR
L’ADRESSAGE CEREBRAL?
- Nanoparticules recouvertes de polysorbate- Nanoparticules recouvertes de PEG
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J. Kreuter et al., Brain Research, 674, 171-174, 1995 J. Kreuter et al., J. Controlled Rel., 49, 81-87, 1997
Dalargin PS80 NP
Dalargin + NP+PS80
Dalargin free
Analgesic effect of polysorbate 80-coated and dalargin-loaded
nanoparticles (i.v. injection)
time post drug latency- time pre drug latencycut off time- time pre drug latency
Cut off time= 10sec before tissue damage
% MPE=polysorbate
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Analgesic effect of polysorbate 20, 40, 60 and 80-coated and dalargin-loaded
nanoparticles (i.v. injection)J. Kreuter et al., J. Controlled Rel., 49, 81-87, 1997
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COMPARATIVE ANTINOCICEPTIVE EFFECT (TAIL FLICK TEST)ON WILD TYPE AND APOE DEFICIENT MICE
apo E-deficient ApoEtm1Unc mice
C57BL/6J mice
J. Kreuter, Adv. Drug Deliv. Rev., 47, 65-81, 2001
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a) Mice, 1h
0
0,05
0,1
0,15
0,2
0,25
0,3
right hemisphere left hemisphere cerebellum
% d
ose
/ g ti
ssue
NP [PEG-PHDCA]
NP [PHDCA]
NP [PHDCA]-Polox 908
NP [PHDCA]-P80
CN
OO
14
+Me2NH
CN
OO
On
EtOH, 20 °C
CN CN
OO OO
O
x y
n14
+ CH2O
Seric proteins
CAPTURE CEREBRALE DES NANOPARTICULES DE PEG-PACA
Apo A-I Apo A-I
Apo A-IV Apo A-IV
Apo C-II/ III Apo C-II/III
Apo E Apo EApo J
Apo J
AlbumineAlbumine
IgG heavy chains
IgG heavychains
IgG light chains
IgG light chains
PHDCA PEG-PHDCA
Perrachia et al., J. Control. Rel, 60, 121-128 (1999)Perrachia et al., Biomaterials, 20, 1269-1275 (1999)
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4 6 8 10 12 14 16 18 20 22 24 26Time (days)
50
100
150
200
250
300
350
TEE
R (O
hms.
cm²)
FUNCTIONALITY OF THE IN VITRO MODEL OF RAT BBB
E. Garcia-Garcia et al., CMLS, 62, 1400-1408 (2005)
astrocytes
Cellules endothéliales
TRANSWELL
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NANOPARTICLES TRANSLOCATION THROUGH EXPERIMENTAL RAT BBB
0 30 60 90 120 150 180 210 240 270
Time (min)
0
1
2
3
4
5
6
7
Nan
opar
ticle
s tr
ansl
ocat
ion
(%)
bPEG-PHDCA
PHDCA
DEGRADED PEG-PHDCA
CN
OO
14
+Me2NH
CN
OO
On
EtOH, 20 °C
CN CN
OO OO
O
x y
n14
+ CH2O
E. Garcia-Garcia et al., CMLS, 62, 1400-1408 (2005 )
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20 µm
… AND LDL RECEPTOR IS INVOLVEDKim HR et al Cell Mol Life Sci., 64, 356-364 (2007)
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Densitometry
0
2
4
6
8
10
S Pe Ph Pe' Ph'
inte
nsity
[pix
el x
10E
-3]
ApoE Rat S NP PEGNP PEGNP NP+S+S
S Pe Ph Pe’ Ph’
ADSORPTION OF RAT APOE ONTO PEGYLATED AND NON PEGYLATED NANOPARTICLES
Kim HR et al., Biomacromolecules. 8:793-9 (2007)
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BRAIN TRANSLOCATION OF
NANOPARTICLES THROUGH THE LDL
RECEPTOR PATHWAY
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ApoE DECORATED NANOPARTICLES FOR BRAIN DELIVERY
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apolipoprotein E HSA-NP with 7.0 mg/kg loperamide; apolipoprotein E HSA-NP with 4.0 mg/kg loperamide; HSA-NP with loperamide (no apolipoprotein E attached); loperamide solution; apolipoprotein E HSA-NP without loperamide; and polysorbate 80-coated HSA-NP with 7.0 mg/kg loperamide.
LOPERAMIDE LOADED APO E FUNCTIONALIZED HUMAN SERUM ALBUMINE NANOPARTICLES
Michaelis K et al, JPET, 317, 1246-1253, 2006
Loperamide interfere with
acetylcholine release
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APOE NANOPARTICLES DO NOT INHIBIT PgP FUNCTIONMichaelis K et al, JPET, 317, 1246-1253, 2006
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Cortex(a, b) and hippocampus (c,d) region of SV 129 mice after the injection of Apo E-modified nanoparticles
Nanoparticles could be found in all investigated brain regions
BRAIN LOCALIZATION OF APOE DECORATED ALBUMINE NANOPARTICLESAnja Zensi et al., J Control Rel, 2009
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ANTITRANSFERRIN mAb DECORATED NANOPARTICLES FOR BRAIN
DELIVERY
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OX-26 PEGylated AND ADRESSED CHITOSAN NANOPARTICLES FOR BRAIN DELIVERY OF Z-DEVD-FMK
Y. Aktaş et al. , Bioconj. Chem., 16, 1503-1511 (2005)
N-benzyloxycarbonyl-Asp(OMe)-Glu(OMe)-Val-Asp(OMe)-fluoromethyl ketone (Z-DEVD-FMK)
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BRAIN DELIVERY BY OX 26 CHITOSAN NANOPARTICLES OF PEPTIDE CASPASE
INHIBITOR ZDEVD FMK
Karatas H et al., J Neurosci., 2009
Infarct volume
Neurological deficit score
Ischemia induced by a nylon filament inserted into the common carotid artery (20 min + reperfusion 10 min)
188 ng Z-DEVD
50 ng Z-DEVD
0, no observable neurological deficits (normal); 1, failure to extend left forepaw on lifting the whole body by the tail (mild); 2, circling to the contralateral side (moderate); 3, leaning to the contralateral side at rest or no spontaneous motor activity (severe).
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Caspase-3 activity
BRAIN DELIVERY BY OX 26 CHITOSAN NANOPARTICLES OF ZDEVD FMK
Karatas H et al., J Neurosci., 2009
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NEONATAL MICE CASPASE ACTIVITY IN DEVELOPMENTAL APOPTOSIS
A Cerebrellar cells show Caspase-3 activity
B Evans blue doesn’t leak out of the capillaries showing intact BBB
C Cell nuclei staining
D Treatment with nanoparticles loaded with high-dose Z-DEVD-FMK and conjugated with OX26 antibody (high-dose) significantly inhibited caspase-3 activity
Karatas H et al., J Neurosci., 2009
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ANTITRANSFERRIN mAb DECORATED LIPOSOMES FOR BRAIN DELIVERY
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Shi N. et.al. PNAS;98:12754-12759, 2001
rat 8D3 mAb allow the recognition of the mouse brain Transferrin receptor
human glial fibrillary acidic protein (GFAP) promoter allowThe expression in the brain tissue
PEG allows to escape the RES
IMMUNOLIPOSOMES FOR BRAIN TARGETING
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Shi N. et.al. PNAS;98:12754-12759, 2001
(A) PILs carrying the pSV-β-galactosidase plasmid, driven by the SV40 promoter and conjugated with
the 8D3 rat mAb
Galactosidase plasmid DNA with a brain-specific promoter (GFAP) encapsulated in the 8D3 mAb targeted PEGylated Immunoliposomes
(B) PILs carrying the pSV-β-galactosidase plasmid, driven by the GFAP promoter and conjugated with the 8D3 rat mAb
(C) PILs carrying the pSV-β-galactosidase plasmid, driven by GFAP promoter and irrelevant rIgG mAb
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(A) β-Galactosidase histochemistry in mouse brain removed 48 h after a single i.v. injection of the GFAP/β-galactosidase plasmid encapsulated in the interior of 8D3-targeted PILs
(B) β-Galactosidase histochemistry is shown for brain removed from mice at 24, 48, and 72 h after a single i.v. injection of the GFAP/β-galactosidase plasmid encapsulated in the
interior of 8D3 PILs.
Shi N. et.al. PNAS, 98:12754-12759, 2001
Galactosidase plasmid DNA and GFAP brain specific promotor encapsulated
in the 8D3 mAb targeted PEGylated Immunoliposomes
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Confocal microscopy of mouse brain after i.v. injection of the GFAP/β-galactosidase plasmid encapsulated in the interior of 8D3
Pegylated immunoliposomes
Shi N. et.al. PNAS 2001;98:12754-12759
Immunoreactive GFAP stained with rhodamine-labeled antibody
immunoreactive galactosidase stained with a fluorescein-labeled antibody
merge
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OPIOID PEPTIDES DECORATED NANOPARTICLES FOR BRAIN DELIVERY
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H2N–Gly-l-Phe-d-Thr-Gly-l-Phe-l-Leu–X–CONH2
1 X = l-Ser–OH
2 X = l-Ser-O-β-D glucose
3 X = l-Ser-O-β-D galactose
4 X = l-Ser-O-β-D xylose
5 X = l-Ser-O-β-D lactose
PLGA NANOPARTICLES FUNCTIONALIZED WITH OPIOID PEPTIDES
-Synthetic opioid peptides were shown to be BBB permeable -Permeability may be enhanced in the presence of glucosidic moieties
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PLGA nanoparticles are located onlyin the cerebral vascular space
PLGA nanoparticles linked with opioid peptidetranslocate the brain tissue PLGA-PEPT 1 (green)and PLGA-PEPT 2 (red)
BRAIN TRANSLOCATION OF THE NANOPARTICLES OF PLA CONJUGATED WITH OPIOID PEPTIDES
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Confocal study Images 7C and 7D are referred to the intensity per cent of green and blue coloration coming respectively from fluorescent Np and DAPI-double strand DNA complexes of cerebral cells. The spots included into the yellow ellipsis in (C) and (D) are considered as the points of interaction between fluorescent Np and cells because of their same position in the thickness of the sample. These sites of interaction are also well recognizable as the white spots enclosed in the yellow squares in (A) (PLGA-peptide 1Np in green) and (B) (cerebral cells–DAPI complexes in blue).
BRAIN TRANSLOCATION OF THE NANOPARTICLES OF PLA CONJUGATED WITH OPIOID PEPTIDES
COLOCALIZATION
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NANOPARTICLES FOR RECOGNITION OF AMYLOID PLAQUES
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E K Agyare et al., Pharmaceutical Research, 25, 2674-2684 (2008)
A Design of the smart nano-vehicle (SNV); B Design of the control nano-vehicle (CNV).
SMART NANOVEHICLES TO TARGET AMYLOID DEPOSITS
ANTI AMYLOID
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SMART NANOVEHICLES TO TARGET AMYLOID DEPOSITS
flow cytometry: A untreated bovine brain microvascular endothelial cells (BBMECs), B BBMECs treated with FITC-BSA-CNVs; and C BBMECs treated with FITC-BSA-SNVs.
Localization of SNVs labeled with Alexa Fluor 647 in bovine brain microvascular endothelial cell (BBMEC) monolayer. Images were taken as z-stack A Z-stack presented in x–y plane clearly demonstrates cellular uptake of AF647-SNVs. Projection in both the x–z and y–z orthogonal planes confirms the transcytosis of AF647-SNVs across the BBMEC monolayer.
E K Agyare et al., Pharmaceutical Research, 25, 2674-2684 (2008)
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IRON OXIDE NANOPARTICLES FOR BRAIN IMAGING
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BRAIN TUMOR IMAGING WITH MULTIFUNCTIONAL NANOPARTICLESReddy R. et al.,Clin Cancer Research, 22, 6677-6686, 2006
F3-NanoNano
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BRAIN DELIVERY USING NANOCARRIERS: CONCLUSIONS
• The BBB is equipped with tight junctions and is of low permeability to various drug molecules
• Control non functionalized nanotechnologies don’t diffuse spontaneously through the BBB
• Functionalization of nanocarriers using different ligands (antitransferrin mAb, ApoE, synthetic opioid peptides etc.) allows significant brain translocation
• Applications in the fields of pain treatment, neurodegenerative diseases, brain cancers, imaging etc.