November, 2024
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Xiaolei Liu: New insights into lymphatic development by CXCL12/CXCR4 signaling
Nov 5, 2024, 14:18

Xiaolei Liu: New insights into lymphatic development by CXCL12/CXCR4 signaling

Xiaolei Liu, Assistant Professor in the Lemole Center for Integrated Lymphatics Research at Temple University, posted the following on X:

“I am very happy to share that the first research article from the Liu lab entitled ‘A neuro-lymphatic communication guides lymphatic development by CXCL12/CXCR4 signaling’ is officially accepted by Development! More threads for the findings of the paper!

Thread 1: in this manuscript, we analyzed a main chemokine receptor CXCR4 in lymphatic development using LEC-specific CXCR4 KO mice. we found that those mutant embryos displayed severe edema with major lymphatic defects including reduced sprouting, migration and branching.

Xiaolei Liu: New insights into lymphatic development by CXCL12/CXCR4 signaling

T2: We found very interestingly, in the mutant lymphatic vessels, VEGFR3 was mis-localized such that it does not reside on the surface of the LECs. We then questioned whether CXCR4 is required for VEGFC mediated VEGFR3 signaling.

Xiaolei Liu: New insights into lymphatic development by CXCL12/CXCR4 signaling

T3: our in vitro data support that CXCR4 is required for VEGFR3 surface expression and VEGFC mediated VEGFR3/PI3K/AKT signaling as well as LEC migration and sprouting in vitro.

Xiaolei Liu: New insights into lymphatic development by CXCL12/CXCR4 signaling

T4: Inspired by many questions while we talked about our story, where is the ligand from? we used CXCL12 reported mice and revealed something REALLY cool! There is a neuro-lymphatic communications guiding lymphatic development.

Xiaolei Liu: New insights into lymphatic development by CXCL12/CXCR4 signaling

T5: Excitingly, CXCL12 mutant embryos phenocopies the lymphatic defects seen in CXCR4 mutant embryos.

Xiaolei Liu: New insights into lymphatic development by CXCL12/CXCR4 signaling

A neuro-lymphatic communication guides lymphatic development by CXCL12/CXCR4 signaling

Authors: Long Nguyen Hoang Do, Esteban Delgado, Casey G. Lim, Meriem Bkhache, Amanda M. Peluzzo, Yiming Hua, Manisha Oza, Sadia Mohsin, Hong Chen, Michael V. Autieri, Seonhee Kim, Xiaolei Liu.

Xiaolei Liu: New insights into lymphatic development by CXCL12/CXCR4 signaling