Differential proteome analysis of conditioned medium of BPH-1 and LNCaP cells / 中华医学杂志(英文版)
Chinese Medical Journal
;
(24): 3806-3809, 2011.
Artigo
em Inglês
| WPRIM
| ID: wpr-273971
ABSTRACT
<p><b>BACKGROUND</b>Although the introduction of serum prostate-specific antigen (PSA) measurements into clinical practice has revolutionized the care of patients with prostate cancer, there are well-recognized limitations of PSA, and there is a critical need to identify additional prostate cancer biomarkers to assist in early detection and prognosis. In this regard, high resolution proteomic technology has the unexceptionable superiority to find those high abundance biomarkers. The purpose of this study was to search new tumor markers by proteomic technology.</p><p><b>METHODS</b>The proteins in conditioned medium (CM) of BPH-1 and LNCaP cells were profiled by two-dimensional electrophoresis and identified by matrix-assisted laser desorption ionization mass spectrometry (MALDI-TOF-MS). The corresponding mRNA levels of some identified proteins were analyzed by RT-PCR.</p><p><b>RESULTS</b>Totally 11 differentially expressed proteins (6 up-regulated including creatine kinase, brain (CKB), triosephosphate isomerase 1 (TPI1), isocitrate dehydrogenase 2 (IDH2) and 5 down-regulated including glutathione S-transferase pi (GST-pi)) in the CM were identified using MALDI-TOF-MS and database search. The expression pattern between mRNA and CM protein levels of CKB, IDH2, TPI1 and GST-pi in BPH-1 and LNCaP was similar.</p><p><b>CONCLUSION</b>We proved a feasible and effective way to search new tumor markers by a proteomics-based strategy and identified 11 potentially useful proteins in CM of BPH-1 and LNCaP cells to distinguish prostate cancer from benign prostatic hypertrophy.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Neoplasias da Próstata
/
Eletroforese em Gel Bidimensional
/
Linhagem Celular
/
Antígeno Prostático Específico
/
Meios de Cultivo Condicionados
/
Proteoma
/
Linhagem Celular Tumoral
/
Metabolismo
Tipo de estudo:
Estudo de rastreamento
Limite:
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Chinese Medical Journal
Ano de publicação:
2011
Tipo de documento:
Artigo
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