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Alysia vandenBerg
Vangl2 functions in Vangl2 functions in non-canonical Wnt non-canonical Wnt signaling in Female signaling in Female Reproductive Tract Reproductive Tract
DevelopmentDevelopment
The role of Vangl2, a non-canonical Wnt signaling protein, in Female Reproductive
Tract development
> 273,000 deaths worldwide from cervical cancer each year> 273,000 deaths worldwide from cervical cancer each yearaccounting for 9% of female cancer deathsaccounting for 9% of female cancer deaths
> 190,000 new cases of ovarian cancer worldwide each > 190,000 new cases of ovarian cancer worldwide each year, accounting for around 4% of all cancers diagnosed in year, accounting for around 4% of all cancers diagnosed in womenwomen
> 50,300 deaths from corpus uteri cancer worldwide in > 50,300 deaths from corpus uteri cancer worldwide in 20022002
Infertility: Most US health insurance plans do not cover Infertility: Most US health insurance plans do not cover infertility treatments one round of in vitro fertilization infertility treatments one round of in vitro fertilization costs ~ $12,440costs ~ $12,440
Epithelial-mesenchymal communication Epithelial-mesenchymal communication guides guides FFemale emale RReproductive eproductive TTract (ract (FRTFRT) )
developmentdevelopment
anterior
anterior
•signal from mesenchyme regulates epithelium
Epithelial-mesenchymal communication Epithelial-mesenchymal communication guides guides FFemale emale RReproductive eproductive TTract (ract (FRTFRT) )
developmentdevelopment
anterior
•signal from epithelium controls mesenchyme
Epithelial-mesenchymal communication Epithelial-mesenchymal communication guides guides FFemale emale RReproductive eproductive TTract (ract (FRTFRT) )
developmentdevelopment
WntWntss
Wnt4, Wnt5a,Wnt4, Wnt5a,Wnt7a, Wnt11Wnt7a, Wnt11
TCF/LEF1-dependentTCF/LEF1-dependenttranscriptiontranscription
Wnt signaling pathwayWnt signaling pathway CanonicalCanonical
FzFz
ß-catenin
Wnt
DshDsh
ß-cateninß-catenin
ß-catenindestruction complex
Canonical Wnt reporter Canonical Wnt reporter activity Before birth- 2 weeks activity Before birth- 2 weeks
after birthafter birth
NON-CanonicalNON-Canonical
TCF/LEF1-dependentTCF/LEF1-dependenttranscriptiontranscription
WntFzFz
Morphological Morphological changes/changes/
Cell motilityCell motility
DshDsh
Vangl2Vangl2
Wnt signaling pathwayWnt signaling pathway CanonicalCanonical NON-CanonicalNON-Canonical
RhoA
JNKJNK
ROCKROCK
cytoskeletoncytoskeleton
Daam1
Planar Cell Polarity,Planar Cell Polarity, Convergent Extension Convergent Extension
FzFzWnt
DshDsh
TCF/LEF1-dependentTCF/LEF1-dependenttranscriptiontranscription
Morphological Morphological changes/changes/
Cell motilityCell motility
DshDsh
Wnt signaling pathwayWnt signaling pathway CanonicalCanonical
RhoA
JNKJNK
ROCKROCK
cytoskeletoncytoskeleton
Daam1/2
Planar Cell Polarity,Planar Cell Polarity, Convergent Extension Convergent Extension
FzFzWnt
DshDsh
NON-CanonicalNON-Canonical Wnt
FzFz Vangl2Vangl2
Proximal Distal
Proper asymetric Localization is necessary for function
of PCP signaling proteins
Drosophila
Prox
imal
Dis
tal
FrizzledFrizzledVangl2Vangl2
actinactin
Mice
Reproductive Reproductive maturitymaturity
Using the mouse to studyUsing the mouse to studyFFemale emale RReproductive eproductive TTract (ract (FRTFRT) )
developmentdevelopment
in mice, post-natal development continues for 2 months
day60day60birth/day 0birth/day 0
Proliferation Proliferation differentiationdifferentiation
Reproductive Reproductive maturitymaturity
Using the mouse to studyUsing the mouse to studyFFemale emale RReproductive eproductive TTract (ract (FRTFRT) )
developmentdevelopment
day60day60birth/day 0birth/day 0
glandsglandsformform
day 3day 3
Proliferation Proliferation differentiationdifferentiation
Reproductive Reproductive maturitymaturity
Using the mouse to studyUsing the mouse to studyFFemale emale RReproductive eproductive TTract (ract (FRTFRT) )
developmentdevelopment
day60day60day21day21birth/day 0birth/day 0
glandsglandsformform
~day15~day15day 3day 3
Smooth Smooth muscles muscles
formformProliferation Proliferation
differentiationdifferentiation
Vangl2Vangl2
loop-tailloop-tail S464NS464N*D255ED255E **
Hypothesis: Non-Canonical Wnt signaling Hypothesis: Non-Canonical Wnt signaling plays a role in FRT developmentplays a role in FRT development
Looptail mouse is tool for focusing on NON-canonical Looptail mouse is tool for focusing on NON-canonical WNTsWNTs
Unstable proteinUnstable protein
Gross morphology at birthGross morphology at birth
WT Lp mutant 2.5x mutant zoom
A B C
ovi ovi
bl
ut
ut
2mm
WT
Gross morphology ~8 weeksGross morphology ~8 weeks
Lp/+ heterozygous
5mm
wt
lp/lp
Looptail mice Looptail mice have disrupted have disrupted uterine tissue uterine tissue organizationorganizationeven at birtheven at birth
Clues that non-canonical Wnt signaling happensClues that non-canonical Wnt signaling happens in the Uterusin the Uterus
•wnt7wnt7 mutants have changes in cell orientation (even at mutants have changes in cell orientation (even at birth)birth)Loss of Wnts has lasting consequences upon FRT development
Development 131, 2061-2072 (2004)
Vangl2Vangl2 protein is concentrated at membrane of protein is concentrated at membrane of epithelial cellsepithelial cells
Vangl2 protein localizes to the uterine Vangl2 protein localizes to the uterine epitheliumepithelium
WTWT looptaillooptail
WTWT looptaillooptail
18.5 DPC18.5 DPC
Planar Cell Polarity defect in Looptail mice causes mislocalization of PCP protein
complexesIs Vangl2 itself asymetrically localized?
1Mo
2Mo
1Mo
2Mo
Vangl2Vangl2 protein is concentrated at apical membrane of protein is concentrated at apical membrane of epithelial cells and localizes to glands!!!epithelial cells and localizes to glands!!!
ActinActin
Prediction: Planar Cell Polarity defect in Looptail mice causes mislocalization of PCP
protein complexes in the uterus
Morphological Morphological changes/changes/
Cell motilityCell motility
RhoA
JNKJNK
ROCKROCK
cytoskeletoncytoskeleton
Daam1
WntFzFz
Vangl2Vangl2
DisheveledDisheveled
WT Alexa647-phalloidin
Lp/Lp
Looptail mutants have actin polarity defect in 18.5 DPC Uterus
WT
Looptail mutants have actin polarity defect in 18.5 DPC Uterus
Lp/Lp
Morphological Morphological changes/changes/
Cell motilityCell motility
DshDsh
RhoA
JNKJNK
ROCKROCK
cytoskeletoncytoskeleton
Daam1
WntFzFz
E-cadherinE-cadherin
Prediction: Planar Cell Polarity defect in Looptail mice causes mislocalization of PCP
protein complexes in the uterus
•associated w/loss of cell polarity in cancers•involved in cell movement
Vangl2Vangl2
E-cadherinE-cadherin
B-catenin
E-cadherin staining reveals defect in cellular architecture of Looptail mutant Uterui
WT 18.5 dpc Lp/Lp 18.5 dpc
WT Lp/Lp
E-cadherin staining reveals defect in cellular architecture of Looptail mutant Uterui
Are there tight junction defects in Lp epithelium?Are there tight junction defects in Lp epithelium?
Morphological Morphological changes/changes/
Cell motilityCell motility
RhoA
JNKJNK
ROCKROCK
cytoskeletoncytoskeleton
Daam1
WntFzFz Vangl2Vangl2
Prediction: Planar Cell Polarity defect in Looptail mice causes mislocalization of PCP
protein complexes in the uterus
ScribbleScribble•scribble scribble mutants mutants mislocalize Vangl2mislocalize Vangl2•Vangl2 IPVangl2 IP’’s with Scribs with Scrib•4 PDZ domains4 PDZ domains•Apical/basal polarityApical/basal polarity•Adherins junctionsAdherins junctions
DisheveledDisheveled
Lp/Lp mutant uteri have increased scribble Lp/Lp mutant uteri have increased scribble localization to apical domain of epitheliumlocalization to apical domain of epithelium
scribble is normally
basolaterally restricted
WT d18.5 Lp/Lp d18.5
Xenografting experiment to observeXenografting experiment to observe post-natal uterine developmentpost-natal uterine development
•Take WT & Lp/Lp mutant uterine tissue embyronic Take WT & Lp/Lp mutant uterine tissue embyronic D18.5D18.5•Place WT tissue in right kidney capsule & Lp in Place WT tissue in right kidney capsule & Lp in leftleft•ovarectomized Nu mouse mimics normal FRT ovarectomized Nu mouse mimics normal FRT developmentdevelopment
Looptail mutant xenografts develop abnormallyLooptail mutant xenografts develop abnormally(2 weeks)(2 weeks)
wild type graftwild type graft Lp/+ heterozygoteLp/+ heterozygote
gl?gl?secretionssecretions
• abnormal epithelial abnormal epithelial morphologymorphology• few glandsfew glands
• epitheliumepithelium• glandsglands• mesenchymemesenchyme• musclemuscle
glglmesen.mesen.
muscle
muscle
Looptail mutant xenografts develop abnormallyLooptail mutant xenografts develop abnormally
wild type graftwild type graft Lp/+ heterozygoteLp/+ heterozygote
glands?glands?musclemuscle
epi nuclear epi nuclear positionposition
• abnormal epithelial abnormal epithelial morphologymorphology• few glandsfew glands
glglmesen.mesen.
muscle
muscle
• epitheliumepithelium• glandsglands• mesenchymemesenchyme• musclemuscle
glglmesen.mesen.
muscle
muscle
Looptail mutant xenografts develop abnormallyLooptail mutant xenografts develop abnormally
Lp mutantLp mutantwild type graftwild type graft
gl?gl?
mesen.mesen.protrusionprotrusion
musclemuscle
• abnormal epithelial abnormal epithelial morphologymorphology• few glandsfew glands• big lumenbig lumen• "protrusions""protrusions"
• epitheliumepithelium• glandsglands• mesenchymemesenchyme• musclemuscle
glglmesen.mesen.
muscle
muscle
Looptail mutant xenografts develop abnormallyLooptail mutant xenografts develop abnormally
Lp mutantLp mutantwild type graftwild type graft
• abnormal epithelial abnormal epithelial morphologymorphology• few glandsfew glands• big lumenbig lumen• "protrusions""protrusions"
• epitheliumepithelium• glandsglands• mesenchymemesenchyme• musclemuscle
Looptail mutant xenografts develop abnormallyLooptail mutant xenografts develop abnormallyLp mutantLp mutantwild type graftwild type graft
•Lp have many abnormal epithelial cellsLp have many abnormal epithelial cells•very high # of pseudo-stratified epithelial very high # of pseudo-stratified epithelial cellscells
Looptail mutant xenografts develop abnormallyLooptail mutant xenografts develop abnormally
Lp mutantLp mutant
•Lp have many abnormal epithelial cellsLp have many abnormal epithelial cells•very high # of pseudo-stratified epithelial very high # of pseudo-stratified epithelial cellscells
Lp mutantLp mutantWTWT
Xenografts 2 weeks
WTWT Lp graftLp graft
•E-cadherin•Actin•nuclei
Xenografts 2 weeks- Oil Red stain
WT Lp heterozygote Lp mutant
Loss of Wnts affects uterine developmentLoss of Wnts affects uterine developmentwnt7awnt7a mutants are sterile mutants are sterile
Wnt7a-/-Wnt7a-/-WTWT
uterine cytological changes at 2 months :uterine cytological changes at 2 months :•Expanded and stratified epithelial layerExpanded and stratified epithelial layer•Expanded smooth muscle layerExpanded smooth muscle layer•No glandsNo glands
uterine cytological changes at 2 uterine cytological changes at 2 months :months :•Expanded and stratified epithelial layerExpanded and stratified epithelial layer•Expanded smooth muscle layerExpanded smooth muscle layer•No glandsNo glands
Wnt7a +/-Wnt7a +/-
uterine cytological changes at 2 uterine cytological changes at 2 months :months :•Expanded and stratified epithelial layerExpanded and stratified epithelial layer•Expanded smooth muscle layerExpanded smooth muscle layer•No glandsNo glands•Less Wnt7a, more glands formLess Wnt7a, more glands form
Development. 1998 Aug;125(16):3201-11.
Wnt signaling appears to be involved in gland Wnt signaling appears to be involved in gland formationformation
Mathias Mericskay
Morphological Morphological changes/changes/
Cell motilityCell motility
WntFz1Fz1
Vangl2 functions in FRT developmentVangl2 protein is apically enriched
and localizes to glandular membranesVangl2Vangl2
ScribbleScribble
Morphological Morphological changes/changes/
Cell motilityCell motility
WntFz1Fz1
Lp mutants have defects in actin polarizationand scribble protein distribution
Vangl2Vangl2
DshDsh
RhoA
JNKJNK
ROCKROCK
cytoskeletoncytoskeleton
Daam1-catenin
Morphological Morphological changes/changes/
Cell motilityCell motility
DshDsh
RhoA
JNKJNK
ROCKROCK
cytoskeletoncytoskeleton
Daam1
WntFz1Fz1
FUTURE STUDIES: tying it together
Vangl2Vangl2
ScribbleScribble
LGL2LGL2
aPKCaPKC
-catenin
Adapted fromAnnu.Rev.Cell Dev. Biol
2006.22:207-235
Early Early polaritypolarity
crumbs3crumbs3
Par3Par3
Morphological Morphological changes/changes/
Cell motilityCell motility
DshDsh
RhoA
JNKJNK
ROCKROCK
cytoskeletoncytoskeleton
Daam1
WntFz1Fz1
Vangl2Vangl2
ScribbleScribble
LGL2LGL2
aPKCaPKC
Cdc42Cdc42
-catenin
Adapted fromAnnu.Rev.Cell Dev. Biol
2006.22:207-235
VASPVASPviniculinviniculin
CytoskeletalCytoskeletalmodulatorsmodulators
Early Early polaritypolarity
Par3Par3
crumbs3crumbs3
FUTURE STUDIES: tying it together
Morphological Morphological changes/changes/
Cell motilityCell motility
DshDsh
RhoA
JNKJNK
ROCKROCK
cytoskeletoncytoskeleton
Daam1
WntFz1Fz1
FUTURE STUDIES: Epithelial tight junction defects?
Vangl2Vangl2 Tight junction
Tight junction ScribbleScribble ??
LGL2LGL2
Zo-1Zo-1
Zo-3Zo-3
Zo-2Zo-2OccludinOccludin
claudinclaudin
JAM
Par6Par6 Par3Par3
PATJPATJ
PALS1PALS1
aPKCaPKC
Cdc42Cdc42 crumbs3crumbs3
CadherinsCadherins
-catenin
Adapted fromAnnu.Rev.Cell Dev. Biol
2006.22:207-235
VASPVASPviniculinviniculin
CytoskeletalCytoskeletalmodulatorsmodulators
Early Early polaritypolarity
actinactin
Morphological Morphological changes/changes/
Cell motilityCell motility
DshDsh
RhoA
JNKJNK
ROCKROCK
cytoskeletoncytoskeleton
Daam1
WntFz1Fz1
FUTURE STUDIES: Epithelial tight junction defects?
Vangl2Vangl2 Tight junction
Tight junction ScribbleScribble ??
LGL2LGL2
Zo-1Zo-1
Zo-3Zo-3
Zo-2Zo-2OccludinOccludin
claudinclaudin
JAM
Par6Par6 Par3Par3
PATJPATJ
PALS1PALS1
aPKCaPKC
Cdc42Cdc42 crumbs3crumbs3
CadherinsCadherins
-catenin
Adapted fromAnnu.Rev.Cell Dev. Biol
2006.22:207-235
VASPVASPviniculinviniculin
CytoskeletalCytoskeletalmodulatorsmodulators
Early Early polaritypolarity
Scribble required for basolateral exocytosis
Loss of beta-catenin fcn associated lack of cadherin actin-binding fucntion
•MAGI-3 linked with RhoA activation
•In Lp heart ROCK RhoA actin
LGL2 knockdown- abnormal cell aggregates fill lumen in MDCK cells & have abnormal actin polarizationRAC1
Morphological Morphological changes/changes/
Cell motilityCell motility
DshDsh
RhoA
JNKJNK
ROCKROCK
cytoskeletoncytoskeleton
Daam1
WntFz1Fz1
FUTURE STUDIES: Epithelial tight junction defects?
Vangl2Vangl2 Tight junction
Tight junction ScribbleScribble ??
LGL2LGL2
Zo-1Zo-1
Zo-3Zo-3
Zo-2Zo-2OccludinOccludin
claudinclaudin
JAM
Par6Par6 Par3Par3
PATJPATJ
PALS1PALS1
aPKCaPKC
Cdc42Cdc42 crumbs3crumbs3
CadherinsCadherins
-catenin
Adapted fromAnnu.Rev.Cell Dev. Biol
2006.22:207-235
VASPVASPviniculinviniculin
CytoskeletalCytoskeletalmodulatorsmodulators
Early Early polaritypolarity
Future ExperimentsFuture Experiments
• Full analysis of WT Vangl2 protein and mRNA localization
• Repeat looptail grafting
• In situs of looptail grafts: wnts, other PCP genes* Does disruption of Vangl2 change wnt signaling in either mesenchyme or epithelium?* Examine gene expression of bona-fide Wnt7 targets
using tissue recombination experiments• vangl2 mutant epithelium with WT mesenchyme• WT epithelium with vangl2 mesenchyme
Description of Wild type Vangl2Description of Wild type Vangl2
Confirm looptail mutant analysisConfirm looptail mutant analysisAre wnts (canonical signaling) affected in Are wnts (canonical signaling) affected in looptaillooptail mutantsmutants
Functional analysis of Vangl2Functional analysis of Vangl2
Acknowledgements
NYC Group LabRisheng MaMartina Schwarzkopf
Former MembersMathias MericskayCary MillerLuca CartaClaudia CosmineauAnna PavlovaMaria Arufe
Cellular ImageryPITIE-SALPETRIERE
CollaboratorsMirielle Montcouquiol Matthew KelleyDaniel DufortPhillipe GrosSergei Sokol & Lab
MSSM shared microscopy facility
And many brave mice
Sassoon LabAra ParlakianGisela GarciaGiovanna MarazziIman GomaaKathryn MitchellKatia CastrilloNathalie DidierVanessa Besson
U787 members
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