Abstract
It has been shown that deletion of the chemokine receptor, CXCR4, causes disordered angiogenesis in mouse models. In the present studies, we examined the distribution and trafficking of CXCR4 in human endothelial cells, tested their responses to the CXCR4 ligand, SDF-1, and asked whether endothelial cell CXCR4 can serve as a cell surface receptor for the binding of viruses. The results show that CXCR4 is present on endothelial cells from coronary arteries, iliac arteries and umbilical veins (HUVEC), but expression was heterogeneous, with some cells expressing CXCR4 on their surface, while others did not. Addition of SDF-1 caused a rapid decrease in CXCR4 surface expression. It also caused CXCR4-mediated activation of MAPK, release of PGI2, endothelial migration, and the formation of capillary-like structures by endothelial cells in culture. Co-culture of HUVEC with lymphoid cells that were chronically infected with a CD4-independent/CXCR4-tropic variant of HIV-2 resulted in the formation of multinucleated syncytia. Formation of the syncytia was inhibited by each of several different CXCR4 antibodies. Thus, our findings indicate: (1) that CXCR4 is widely expressed on human endothelial cells; (2) the CXCR4 ligand, SDF-1, can evoke a wide variety of responses from human endothelial cells; and (3) CXCR4 on endothelial cells can serve as a receptor for isolates of HIV that can utilize chemokine receptors in the absence of CD4. Copyright (C) 2000 Elsevier Science B.V.
| Original language | English |
|---|---|
| Pages (from-to) | 227-240 |
| Number of pages | 14 |
| Journal | Biochimica et Biophysica Acta - Molecular Basis of Disease |
| Volume | 1500 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 21 2000 |
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Keywords
- Chemokine
- Chemokine receptor
- CXCR4
- Endothelial cell
- HIV-2
- SDF-1
ASJC Scopus subject areas
- Molecular Biology
- Molecular Medicine
- Biophysics
Cite this
CXCR4 on human endothelial cells can serve as both a mediator of biological responses and as a receptor for HIV-2. / Molino, Marina; Woolkalis, Marilyn J.; Prevost, Nicolas; Praticó, Domenico; Barnathan, Elliot S.; Taraboletti, Giulia; Haggarty, Beth Stobenau; Hesselgesser, Joseph; Horuk, Richard; Hoxie, James A.; Brass, Lawrence F.
In: Biochimica et Biophysica Acta - Molecular Basis of Disease, Vol. 1500, No. 2, 21.02.2000, p. 227-240.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - CXCR4 on human endothelial cells can serve as both a mediator of biological responses and as a receptor for HIV-2
AU - Molino, Marina
AU - Woolkalis, Marilyn J.
AU - Prevost, Nicolas
AU - Praticó, Domenico
AU - Barnathan, Elliot S.
AU - Taraboletti, Giulia
AU - Haggarty, Beth Stobenau
AU - Hesselgesser, Joseph
AU - Horuk, Richard
AU - Hoxie, James A.
AU - Brass, Lawrence F.
PY - 2000/2/21
Y1 - 2000/2/21
N2 - It has been shown that deletion of the chemokine receptor, CXCR4, causes disordered angiogenesis in mouse models. In the present studies, we examined the distribution and trafficking of CXCR4 in human endothelial cells, tested their responses to the CXCR4 ligand, SDF-1, and asked whether endothelial cell CXCR4 can serve as a cell surface receptor for the binding of viruses. The results show that CXCR4 is present on endothelial cells from coronary arteries, iliac arteries and umbilical veins (HUVEC), but expression was heterogeneous, with some cells expressing CXCR4 on their surface, while others did not. Addition of SDF-1 caused a rapid decrease in CXCR4 surface expression. It also caused CXCR4-mediated activation of MAPK, release of PGI2, endothelial migration, and the formation of capillary-like structures by endothelial cells in culture. Co-culture of HUVEC with lymphoid cells that were chronically infected with a CD4-independent/CXCR4-tropic variant of HIV-2 resulted in the formation of multinucleated syncytia. Formation of the syncytia was inhibited by each of several different CXCR4 antibodies. Thus, our findings indicate: (1) that CXCR4 is widely expressed on human endothelial cells; (2) the CXCR4 ligand, SDF-1, can evoke a wide variety of responses from human endothelial cells; and (3) CXCR4 on endothelial cells can serve as a receptor for isolates of HIV that can utilize chemokine receptors in the absence of CD4. Copyright (C) 2000 Elsevier Science B.V.
AB - It has been shown that deletion of the chemokine receptor, CXCR4, causes disordered angiogenesis in mouse models. In the present studies, we examined the distribution and trafficking of CXCR4 in human endothelial cells, tested their responses to the CXCR4 ligand, SDF-1, and asked whether endothelial cell CXCR4 can serve as a cell surface receptor for the binding of viruses. The results show that CXCR4 is present on endothelial cells from coronary arteries, iliac arteries and umbilical veins (HUVEC), but expression was heterogeneous, with some cells expressing CXCR4 on their surface, while others did not. Addition of SDF-1 caused a rapid decrease in CXCR4 surface expression. It also caused CXCR4-mediated activation of MAPK, release of PGI2, endothelial migration, and the formation of capillary-like structures by endothelial cells in culture. Co-culture of HUVEC with lymphoid cells that were chronically infected with a CD4-independent/CXCR4-tropic variant of HIV-2 resulted in the formation of multinucleated syncytia. Formation of the syncytia was inhibited by each of several different CXCR4 antibodies. Thus, our findings indicate: (1) that CXCR4 is widely expressed on human endothelial cells; (2) the CXCR4 ligand, SDF-1, can evoke a wide variety of responses from human endothelial cells; and (3) CXCR4 on endothelial cells can serve as a receptor for isolates of HIV that can utilize chemokine receptors in the absence of CD4. Copyright (C) 2000 Elsevier Science B.V.
KW - Chemokine
KW - Chemokine receptor
KW - CXCR4
KW - Endothelial cell
KW - HIV-2
KW - SDF-1
UR - http://www.scopus.com/inward/record.url?scp=0033954408&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033954408&partnerID=8YFLogxK
U2 - 10.1016/S0925-4439(99)00110-6
DO - 10.1016/S0925-4439(99)00110-6
M3 - Article
C2 - 10657592
AN - SCOPUS:0033954408
VL - 1500
SP - 227
EP - 240
JO - Biochimica et Biophysica Acta - Molecular Basis of Disease
JF - Biochimica et Biophysica Acta - Molecular Basis of Disease
SN - 0925-4439
IS - 2
ER -