Autoantibodies to tumor-associated antigens as biomarkers in cancer immunodiagnosis.

Autoimmun Rev

Department of Clinical Laboratory Technology, Dalian Municipal Central Hospital, Dalian, Liaoning 116033, China.

Published: April 2011

AI Article Synopsis

  • Cancer sera have antibodies that target tumor-associated antigens (TAAs), which can indicate immune responses to cancerous changes.
  • The identification and validation of TAAs, like p62 and p90, are crucial for developing biomarkers for cancer diagnosis.
  • This review highlights recent progress in understanding how these specific TAAs, p62 and p90, can serve as indicators in cancer immunodiagnosis.

Article Abstract

Cancer sera contain antibodies that react with a unique group of autologous cellular antigens called tumor-associated antigens (TAAs), and therefore these autoantibodies can be considered as reporters from the immune system, to identify authentic TAAs involved in the malignant transformation. Once a TAA is identified, different approaches would be used to comprehensively characterize and validate the identified TAA/anti-TAA systems that are potential biomarkers in cancer immunodiagnosis. In this manner, several novel TAAs such as p62 and p90 have been identified in our previous studies. p62, a member of IGF-II mRNA binding proteins (IMPs), is an oncofetal protein absent in adult tissues, the presence of anti-p62 autoantibodies relates to abnormal expression of p62 in tumor cells. p90 was recently characterized as an inhibitor of the tumor suppressor PP2A (protein phosphatase 2A), and an autoantibody to p90 appears in high frequency in prostate cancer. The present review will focus on the recent advances in studies mainly associated with these two novel TAAs as biomarkers in cancer immunodiagnosis.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3119819PMC
http://dx.doi.org/10.1016/j.autrev.2010.12.002DOI Listing

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