#EndothelialCell

Francoise HelmbacherF_Helmbacher@mstdn.social
2023-04-11

Big Congrats 🎉 to Rui Li & collaborators from the lab of Stefan Offermanns at @mpi_hlr
for this great #NatureComms paper showing that FAT1 controls YAP/TAZ degradation via the E3 ligase MIB2 during #angiogenesis.

Happy of my small contribution!
doi.org/10.1038/s41467-023-376

#FAT1 #YAP #TAZ #angiogenesis #EndothelialCell

Summary Figure for the paper 
Endothelial FAT1 inhibits angiogenesis by controlling YAP/TAZ protein degradation via E3 ligase MIB2 
https://doi.org/10.1038/s41467-023-37671-x
Showing in vivo data from Fat1-cKo and MIB2-Ko illustrating the enhanced hypoxia-induced angiogenesis and tumor angiogenesis resulting from loss of FAT1 or MIB2, and a summary slide illustrating the mechanism by which Fat1 recruits MIB2 to Ubiquitinate YAP/TAZ, thus tagging them for degradation.
2023-03-27

IL-11 as a therapeutic target for lung #Fibrosis #Emphysema in #MarfanSyndrome

In Marfan🐭🫁, IL11-GFP reporter is active in #EndothelialCell #SmoothMuscleCell Fibroblast but not alveolar epithelia

Dr. Stuart A Cook & Wei Wen Lim lab ATVB 2023
ahajournals.org/doi/10.1161/AT

Also don't miss the story on IL-11 as mediator of Mafan #Aortopathy from Circ Res 2022

ahajournals.org/doi/10.1161/CI

2023-03-12

Human Meniscus single-cell RNAseq atlas
4 normal+4 #OsteoArthritis

5 #Chondroncyte subtypes
Emerging proliferative chondrocyte in degenerated tissue

OA-related #EndothelialCell/#MuralCell-Chondrocyte crosstalks🤓

Dr. W Fu & X Zhang labs @eLife 2023
elifesciences.org/articles/795

2023-03-11

Amh+ #SertoliCell is a major (80%) cellular source of #StemCellFactor in🐭Testis

Sertoli, Not #EndothelialCell SCF->
#Spermatogonia maintenance+differentiation

Cell-specific SCF Glycosylation? Proximity?🧐

Dr Hongfang Shao, Bo Zhou lab @Dev_journal 2023
journals.biologists.com/dev/ar

2023-03-02

AP-1 transcription factors ATF3/FOSL1/FOSL2/c-JUN reshape Chromatin Accessibility landscape during #EndothelialCell #Senescence

HUVEC PD 8vs24vs36
1038 & 964 increased & decreased accessibility regions
>94% >2 kb from TSS

Dr. Wei Tao lab Aging Cell 2021
onlinelibrary.wiley.com/doi/10

AP-1 TFs also play pioneering roles in fibroblast #Senescence 🤠

AP-1 imprints a reversible transcriptional programme of senescent cells

Dr. Oliver Bischof lab Nature Cell Bio 2020
nature.com/articles/s41556-020

2023-02-22

#ArterioVenousFistula #EndMT

Low #OscillatoryShearStress->
⏫Osteopontin-CD44 in #EndothelialCell->
⏫EndMT->
⏫24% of neointimal cells at rat aortocaval junction

A cascade independent of #HyaluronicAcid🤓

Dr. Yung-Hsin Yeh lab Kidney Int 2023
kidney-international.org/artic

2023-02-20

Single-nuclei Transcriptomics human Lung
#COVID19 x7
IPF x6
Ctrl x12

COVID🫁
⏫Systemic venous+capillary #EndothelialCell
⏬general capillary EC
⏬Epi-Endo Notch, EC-stromal PDGF
⏫Stromal-EC PlxnA-Sema3A

Dr. Peter Carmeliet lab #CardiovascRes 2022
academic.oup.com/cardiovascres

2023-02-20

Blood Vessel Organoids for Development & Disease

Self-organizing capillary blood vessel #Organoid #EndothelialCell+#Pericyte (+Astrocyte for #BBB)

Transplant to gain vascular hierarchy

Organotypism Through Genetic Drivers

Dr. Josef Penninger lab Circ Res 2023
ahajournals.org/doi/10.1161/CI

2023-02-19

Aortic #Endotheliopathy #MarfanSyndrome

En face #EndothelialCell morphometry->
Alterations in EC shape/junction/alignment/eNOS Precede aortic dilation in Marfan🐭

Flow-sensing defect?😆

Dr. Vivian de Waard lab Scientific Reports 2023
nature.com/articles/s41598-022

2023-02-17

Mechano-vulnerability of #EndothelialCell in #Atherosclerosis 🤠

EVA1A, elevated by #DisturbedFlow-Twist1 axis, blocks EC #Autophagy & induces #Apoptosis

Dr. Paul Evans & Jovana Serbanovic-Canic lab ATVB 2023
ahajournals.org/doi/10.1161/AT

Interesting to note that LC3B in EC +72 h #DisturbedFlow is mostly lipidated (Fig. 4A)

Does this suggest that endothelium under #DisturbedFlow enter an Autophagy-dependent state? For Survival, Shear-sensing & Secretion? 🧐

2023-02-13

#EndothelialCell #Sirt6 deficiency->
#TissueFactor/F3+vascular inflammation genes Cox2, VCAM1, TNFα, MCP1
Accelerated Carotid arterial #Thrombosis (Rose bengal)

A role in atherosclerotic plaque stability?😃

Dr. Christian Matter lab JMCC 2022
jmcc-online.com/article/S0022-

2023-02-09

#LaminarShear pushes VE-PTP (How?🤓) to downstream pole of #EndothelialCell, followed by endocytosis->⏫p-Tie2

Potentially explain how #DisturbedFlow#VascularPermeability & #Atherosclerosis

Inhibition of VE-PTP by AKB-9785 fortifies #EndothelialBarrier & reduces Atheromas at atheroprone regions (aortic arch inner curvature, arch+intercostal bifurcations)🐭

Nice comparison of anti-leakage strategies
VE-PTP inhibition
Angpt1 activation of Tie2
Angpt2 inhibition

Dr. Donald McDonald & Dietmar Vestweber labs EMBO Mol Med 2023
embopress.org/doi/

2023-02-01

"Division of Labor" in Lung endothelial host defense 🐭#Endotoxemia 🐭#Influenza🐵#SARSCOV2

2 subsets of🫁general capillary #EndothelialCell
Irf7+ immune EC
Sox17+ developmental (regenerative) EC

Dr. Jalees Rehman lab JCI Insight 2022
insight.jci.org/articles/view/

2023-01-30

Use Organoid to study Plasticity & Organotypic traits of #EndothelialCell

3D Cardiac Microtissue
#hiPSC-cardiomyocyte, -Fibroblast, -EC

scRNAseq
hiPSC-cardiac mesoderm-EC vs
hiPSC-Paraxial mesoderm-EC
in🫀Organoid

Dr. Valeria Orlova lab bioRxiv 2022
biorxiv.org/content/10.1101/20

2023-01-17

Partial #EndMT,⏫by #Hypoxia-induced CD45, as a major cellular source for neointima formation

50% ECs in ligated artery are CD45+

CD45 is required to maintain this Partial status
Amazing!🤩

Dr. Yoshito Yamashiro & Yoshito Yamashiro lab #CardiovascRes 2022
academic.oup.com/cardiovascres

How CD45 titrates the extent of mesenchymalization of #EndothelialCell?

CD45 stabilizes VE-cad junction via fortifying integrin α11-SHARPIN complex

Very interesting data on Biomechanics of #EndMT 😋

What (beyond CD45) control partial-to-complete EndMT transition?🤓

2023-01-16

#Heme biosynthesis #Angigoenesis

Roles of #EndothelialCell FLVCR1a, a heme exporter to extracellular space in
✅Developmental Angiogenesis-🐭Retina🐟ISV
✅Tumor angiogenesis
❎Vascular homeostasis

Dr. Sara Petrillo lab Angiogenesis 2023
link.springer.com/article/10.1

FLVCR1a deficiency-> #EndothelialCell-autonomous defects in Mitochondria, ER stress & Angiogenic behaviors

Heme accumulation triggers #Paraptosis (Organelle swelling-> Cytoplasic vacuolation)💀

Dr. Emanuela Tolosano lab Cell Death Diff 2018
nature.com/articles/s41418-017

Other enzymes in Heme metabolism in #Angiogensis👇

Ferrochelatase is a therapeutic target for ocular neovascularization
embopress.org/doi/full/10.1525

Serine Synthesis via PHGDH Is Essential for Heme Production in Endothelial Cells
cell.com/cell-metabolism/fullt

2023-01-15

Spatial analysis of Lung microvascular damage+regeneration, correlated with zoned alveolar damage following #Influenza injury

A critical role of #EndothelialCell COUP-TF2/Nr2f2
-Transcriptionally⏫CyclinD1+NRP1
-⏬by NFκB

Dr. Andrew Vaughan lab @vaughandy Science Advances 2020
science.org/doi/10.1126/sciadv

2023-01-13

#ThoracicAorticAneurysm
#EndothelialCell-#SmoothMuscleCell Synergy

EC Fbln4 KO exacerbates Aortopathy of SMC Fbln4 KO
-Aneurysm into Arch
-Descending Aortic tortuosity
-Postnatal aortic valve thickening/#EndMT

Dr. Yoshito Yamashiro and Hiromi Yanagisawa labs JAHA2022
ahajournals.org/doi/10.1161/JA

2023-01-12

Tie2+ #EndothelialCell Egln1/PHD2 KO mice
->Spontaneous #PulmonaryArterialHypertension as early as 1.5 mo

A cascade of EC PHD2 KO->
⏫autocrine #CXCL12->
⏫FoxM1-dependent proliferation

Dr. Zhiyu Dai lab IJMS_MDPI 2021
mdpi.com/1422-0067/22/6/3182

Also read Dr. Dai Circulation 2016🤠presenting EC PHD2 KO, causing PAH via HIF2α (not HIF1α)

PHD2 Deficiency in Endothelial Cells & Hematopoietic Cells Induces Obliterative Vascular Remodeling & Severe Pulmonary Arterial Hypertension PAH in🐭👤Through HIF2α
ahajournals.org/doi/full/10.11

2023-01-11

Endotheliopathy #CysticFibrosis

CFTR-deficient #EndothelialCell
⏫Inflammation IL8/SELE/ICAM1/VCAM1
⏬Proliferation
⏬Autophagy
⏬Barrier
⏫Mitochodriopathy

Dr. Lucas Treps, Guy Eelen, Peter Witters labs Eur Respir J 2021
erj.ersjournals.com/content/57

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