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Original Article

Caveolin-1: A tumor-promoting role in human cancer

&
Pages 177-189 | Received 16 Apr 2007, Accepted 13 Oct 2007, Published online: 03 Jul 2009
 

Abstract

Purpose: Caveolae are non-clathrin, flask-shaped invaginations of the plasma membrane. Caveolin-1 is an essential constituent of caveolae and as such acts as a regulator of caveolae-dependent lipid trafficking and endocytosis. Caveolin-1 interacts with a variety of cellular proteins and regulates cell-signaling events.

Caveolin-1 appears to act as a tumor suppressor protein at early stages of cancer progression. However, a growing body of evidence indicates that caveolin-1 is up-regulated in several multidrug-resistant and metastatic cancer cell lines and human tumor specimens. Furthermore, caveolin-1 levels are positively correlated with tumor stage and grade in numerous cancer types.

Conclusion: The available experimental data support the tumor-promoting role of caveolin-1 in advanced-stage cancer.

Abbreviations
ABCB1=

ATP-binding cassette, sub-family B, member 1;

CAV1=

caveolin-1;

Crk-I=

CT10-regulated kinase-I;

EGF=

epidermal growth factor;

eNOS=

endothelial nitric oxide synthase;

Erk1/2=

extracellular signal-regulated kinase 1/2;

EWS=

Ewing's sarcomas;

FRT=

Fisher rat thyroid cells;

GlcCer=

glucosylceramide;

HUVEC=

human umbilical vein endothelial cells;

IGF-I=

insulin-like growth factor I;

MAPK=

mitogen-activated protein kinase;

MDR=

multidrug resistance;

MMP=

matrix metallopeptidase;

MRP1=

multidrug resistance-associated protein-1;

NSCLC=

non-small cell lung carcinoma;

P-gp=

P-glycoprotein;

PI3K=

Phosphoinositide 3-kinase;

PNI=

perineural invasion;

Shc=

Src homology domain containing;

siRNA=

short interfering RNA;

TRAMP=

transgenic adenocarcinoma of mouse prostate;

PyMT=

Polyoma virus middle T

Abbreviations
ABCB1=

ATP-binding cassette, sub-family B, member 1;

CAV1=

caveolin-1;

Crk-I=

CT10-regulated kinase-I;

EGF=

epidermal growth factor;

eNOS=

endothelial nitric oxide synthase;

Erk1/2=

extracellular signal-regulated kinase 1/2;

EWS=

Ewing's sarcomas;

FRT=

Fisher rat thyroid cells;

GlcCer=

glucosylceramide;

HUVEC=

human umbilical vein endothelial cells;

IGF-I=

insulin-like growth factor I;

MAPK=

mitogen-activated protein kinase;

MDR=

multidrug resistance;

MMP=

matrix metallopeptidase;

MRP1=

multidrug resistance-associated protein-1;

NSCLC=

non-small cell lung carcinoma;

P-gp=

P-glycoprotein;

PI3K=

Phosphoinositide 3-kinase;

PNI=

perineural invasion;

Shc=

Src homology domain containing;

siRNA=

short interfering RNA;

TRAMP=

transgenic adenocarcinoma of mouse prostate;

PyMT=

Polyoma virus middle T

Abbreviations
ABCB1:=

ATP-binding cassette, sub-family B, member 1;

CAV1:=

caveolin-1;

Crk-I:=

CT10-regulated kinase-I;

EGF:=

epidermal growth factor;

eNOS:=

endothelial nitric oxide synthase;

Erk1/2:=

extracellular signal-regulated kinase 1/2;

EWS:=

Ewing's sarcomas;

FRT:=

Fisher rat thyroid cells;

GlcCer:=

glucosylceramide;

HUVEC:=

human umbilical vein endothelial cells;

IGF-I:=

insulin-like growth factor I;

MAPK:=

mitogen-activated protein kinase;

MDR:=

multidrug resistance;

MMP:=

matrix metallopeptidase;

MRP1:=

multidrug resistance-associated protein-1;

NSCLC:=

non-small cell lung carcinoma;

P-gp:=

P-glycoprotein;

PI3K:=

Phosphoinositide 3-kinase;

PNI:=

perineural invasion;

Shc:=

Src homology domain containing;

siRNA:=

short interfering RNA;

TRAMP:=

transgenic adenocarcinoma of mouse prostate;

PyMT:=

Polyoma virus middle T

Notes

This paper was presented at the Workshop on Radiation and Multidrug Resistance Mediated by the Tumor-Microenvironment, guest edited by Dr. Cordes and Dr. Mary Helen Barcellos-Hoff.

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