Messenger RNA expression of vascular endothelial growth factor and its receptors in primary colorectal cancer and corresponding liver metastasis.

Abstract:

BACKGROUND:Antiangiogenic therapies have been developed recently in combination with traditional chemotherapy for patients with metastatic colorectal cancer. The aim of this study was to clarify the association between messenger RNA (mRNA) levels of vascular endothelial growth factor (VEGF) and its receptors (VEGFR) in primary colorectal cancer and those in corresponding liver metastasis. METHODS:Thirty-one paired formalin-fixed, paraffin-embedded tumor tissues of colorectal cancer and liver metastasis were dissected by laser capture microdissection. After the mRNA was isolated, a quantitative fluorescent dye real-time reverse transcription-polymerase chain reaction system was used for gene expression measurement. RESULTS:There was a positive correlation between VEGF mRNA levels in primary colorectal cancer and those in matched liver metastasis (P = .0083, r (s) = 0.48). However, there was no association between mRNA levels of VEGFRs in primary tumor and those in liver metastasis. The mRNA levels of VEGF were associated with those of VEGFR-1 (P = .0026, r (s) = 0.39) but not with those of VEGFR-2. The mRNA levels of VEGF were higher than that of either of the VEGFRs (P < .0001). CONCLUSIONS:We can predict VEGF mRNA levels, but not those of VEGFRs, in liver metastasis by measuring those in primary colorectal cancer. The mRNA expression of VEGFRs may be more dependent on the surrounding environment than that of VEGF. These results should be useful for the formulation of antiangiogenic therapies for metastatic colorectal cancer. Further studies will be necessary to validate these preliminary data.

journal_name

Ann Surg Oncol

authors

Kobayashi H,Sugihara K,Uetake H,Higuchi T,Yasuno M,Enomoto M,Kuramochi H,Lenz HJ,Danenberg KD,Danenberg PV

doi

10.1245/s10434-008-9811-7

subject

Has Abstract

pub_date

2008-04-01 00:00:00

pages

1232-8

issue

4

eissn

1068-9265

issn

1534-4681

journal_volume

15

pub_type

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