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2015 ; 15
(ä): 835
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Reprogramming energy metabolism and inducing angiogenesis: co-expression of
monocarboxylate transporters with VEGF family members in cervical
adenocarcinomas
#MMPMID26525902
Pinheiro C
; Garcia EA
; Morais-Santos F
; Moreira MA
; Almeida FM
; Jubé LF
; Queiroz GS
; Paula ÉC
; Andreoli MA
; Villa LL
; Longatto-Filho A
; Baltazar F
BMC Cancer
2015[Nov]; 15
(ä): 835
PMID26525902
show ga
BACKGROUND: Deregulation of cellular energetic metabolism was recently pointed
out as a hallmark of cancer cells. This deregulation involves a metabolic
reprogramming that leads to a high production of lactate. Lactate efflux, besides
contributing for the glycolytic flux, also acts in the extracellular matrix,
contributing for cancer malignancy, by, among other effects, induction of
angiogenesis. However, studies on the interplay between cancer metabolism and
angiogenesis are scarce. Therefore, the aim of the present study was to evaluate
the metabolic and vascular molecular profiles of cervical adenocarcinomas, their
co-expression, and their relation to the clinical and pathological behavior.
METHODS: The immunohistochemical expression of metabolism-related proteins (MCT1,
MCT4, CD147, GLUT1 and CAIX) as well as VEGF family members (VEGF-A, VEGF-C,
VEGF-D, VEGFR-1, VEGFR-2 and VEGFR-3) was assessed in a series of 232 cervical
adenocarcinomas. The co-expression among proteins was assessed and the expression
profiles were associated with patients' clinicopathological parameters. RESULTS:
Among the metabolism-related proteins, MCT4 and CAIX were the most frequently
expressed in cervical adenocarcinomas while CD147 was the less frequently
expressed protein. Overall, VEGF family members showed a strong and extended
expression with VEGF-C and VEGFR-2 as the most frequently expressed and VEGFR-1
as the less expressed member. Co-expression of MCT isoforms with VEGF family
members was demonstrated. Finally, MCT4 was associated with parametrial invasion
and HPV18 infection, CD147 and GLUT1 with distant metastasis, CAIX with tumor
size and HPV18 infection, and VEGFR-1 with local and lymphnode metastasis.
CONCLUSIONS: The results herein presented provide additional evidence for a
crosstalk between deregulating cellular energetics and inducing angiogenesis.
Also, the metabolic remodeling and angiogenic switch are relevant to cancer
progression and aggressiveness in adenocarcinomas.