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Applications of HPLC-MALDI-TOF MS/MS Phosphoproteomic Analysis in Oncological Clinical Diagnostics

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Abstract:

Recent developments in mass spectrometry have brought clinical proteomics to the forefront of cancer diagnosis and treatment, offering reliable, robust and efficient analysis methods for biomarker discovery and monitoring. Proteins control cellular processes through intricate signaling cascades and protein function is often determined by posttranslational modifications. However, alteration of post-translational modifications that control normal cellular processes, such as differentiation, proliferation and apoptosis, has been significantly related to tumorigenesis. Aberrations in protein phosphorylation, for example, offer promising opportunity for disease diagnosis and prognosis and could also serve as a therapeutic indicator for cancer treatment. Recent studies have identified biomarkers involving several cancer types using high-performance liquid chromatography separation and enrichment techniques coupled with matrix-assisted laser desorption/ ionization time-of-flight mass spectrometry for protein identification and quantification. However the clinical implementation of proteomic technologies is not without shortcomings and is still dependent on laboratory research to expand identification of relevant biomarkers.





Keywords: Adenosine tri-phosphate; Clinical proteomics; Collision induced dissociation; Electrospray ionization; Epidermal growth factor; Estrogen receptor; Heat shock protein 27; Immobilized metal affinity chromatography; Isotope coded affinity tags; mass spectrometry; phosphoproteome; protein biomarker

Document Type: Research Article

DOI: http://dx.doi.org/10.2174/157016411795678048

Publication date: July 1, 2011

More about this publication?
  • Current Proteomics research in the emerging field of proteomics is growing at an extremely rapid rate. The principal aim of Current Proteomics is to publish well-timed review articles in this fast-expanding area on topics relevant and significant to the development of proteomics. Current Proteomics is an essential journal for everyone involved in proteomics and related fields in both academia and industry.
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