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Published in: Journal of Translational Medicine 1/2015

Open Access 01-12-2015 | Research

Perioperative dynamics and significance of amino acid profiles in patients with cancer

Authors: Yu Gu, Tianxiang Chen, Suzhen Fu, Xin Sun, Lingyan Wang, Jian Wang, Yingfeng Lu, Songming Ding, Guodong Ruan, Lisong Teng, Min Wang

Published in: Journal of Translational Medicine | Issue 1/2015

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Abstract

Background

Metabolome analysis including amino acid profile is under investigation as an approach in cancer screening. The present study aims to analyze plasma free amino acid (PFAA) profiles in cancer patients and investigate their potential as biomarkers of malignancy.

Methods

Plasma samples from 56 gastric cancer patients, 28 breast cancer patients, 33 thyroid cancer patients, and 137 age-matched healthy controls were collected in the study. PFAA levels were measured and their perioperative alterations were analyzed. Biological effects of ten cancer-related amino acids were further validated in gastric and breast cancer cells.

Results

We found that PFAA profiles of cancer patients differed significantly from those of healthy controls. Decreased concentrations of PFAAs were associated with lymph node metastases in gastric cancer. Levels of PFAAs such as aspartate and alanine increased after tumor resection. PFAA levels correlated with clinical tumor markers in gastric cancer patients and pathological immunohistochemistry markers in breast cancer patients. Specifically, alanine, arginine, aspartate and cysteine had proliferative effects on breast cancer cells. Proliferation of gastric cancer cells was promoted by cysteine, but inhibited by alanine and glutamic acid. Furthermore, alanine treatment decreased total and stable fraction of gastric cancer cells, and alanine and glutamic acid induced apoptosis of gastric cancer cells.

Conclusions

PFAA patterns in cancer patients are altered perioperatively. Tumor-related amino acids identified by dynamic study of PFAA patterns may have the potential to be developed as novel biomarkers for diagnosis and prognosis of cancer patients.
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Metadata
Title
Perioperative dynamics and significance of amino acid profiles in patients with cancer
Authors
Yu Gu
Tianxiang Chen
Suzhen Fu
Xin Sun
Lingyan Wang
Jian Wang
Yingfeng Lu
Songming Ding
Guodong Ruan
Lisong Teng
Min Wang
Publication date
01-12-2015
Publisher
BioMed Central
Published in
Journal of Translational Medicine / Issue 1/2015
Electronic ISSN: 1479-5876
DOI
https://doi.org/10.1186/s12967-015-0408-1

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