2015
DOI: 10.1172/jci82045
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DLL4 promotes continuous adult intestinal lacteal regeneration and dietary fat transport

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Cited by 153 publications
(229 citation statements)
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“…Notch signaling has very recently been identified as an important mediator of intestinal inflammation and lacteal maintenance. Notch ligands DLL1 and DLL4 are expressed in intestinal crypts and are upregulated during inflammation (35), and continuous lymphatic-specific Dll4 expression induced by VEGFR2 and VEGFR3 is important in the regeneration and proper functioning of lacteals (6). Interestingly, in arterial endothelial cells, AM treatment robustly upregulates numerous Notch pathway components under conditions of hypoxia and regulates Notch pathway components in vascular progenitors during arterial differentiation (36,37).…”
Section: Resultsmentioning
confidence: 99%
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“…Notch signaling has very recently been identified as an important mediator of intestinal inflammation and lacteal maintenance. Notch ligands DLL1 and DLL4 are expressed in intestinal crypts and are upregulated during inflammation (35), and continuous lymphatic-specific Dll4 expression induced by VEGFR2 and VEGFR3 is important in the regeneration and proper functioning of lacteals (6). Interestingly, in arterial endothelial cells, AM treatment robustly upregulates numerous Notch pathway components under conditions of hypoxia and regulates Notch pathway components in vascular progenitors during arterial differentiation (36,37).…”
Section: Resultsmentioning
confidence: 99%
“…Recently, using lymphatic-specific Dll4-null mice, it was shown that lymphatic DLL4 is essential for migration, lacteal tip cell survival, fat absorption, and regeneration of intestinal lacteals (6). Blocking DLL4 function using antibodies downregulates the Notch1-Dll4 axis and leads to dilation of collecting lymphatic vessels and impaired wound healing in adult mouse skin (41).…”
Section: Discussionmentioning
confidence: 99%
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“…38,39 Most nutrients are absorbed by blood vessels, but the passive diffusion of particles of high molecular weight or colloidal nature is limited across BECs. Therefore, the lacteals are essential for the uptake of dietary fats and fat-soluble vitamins.…”
Section: Absorption Of Dietary Lipidsmentioning
confidence: 99%
“…Dans l'intestin, les vaisseaux lymphatiques ont été initialement nommés « veines blanches » en raison de leur coloration blanche observée en phase postprandiale dans la région mésentérique. Ils jouent un rôle primordial dans l'absorption des lipides intestinaux ; ils sont encore appelés « lactés » ou « lactéaux », en raison de cette particularité [4]. Majoritairement présents dans les villosités de l'intestin grêle, les vaisseaux lymphatiques sont à l'origine de l'absorption des lipides alimentaires, libérés sous la forme de chylomicrons par les entéro-cytes (Figure 1).…”
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