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Radiolabeled nucleosides for predicting and monitoring the cancer therapeutic efficacy of chemodrugs.

Abstract
Uncontrolled cell proliferation is an important hallmark of cancer. Cancer treatment with cytostatic chemodrugs usually results in insignificant changes in tumor size, and thus limits the applications of anatomical imaging modalities for determining the therapeutic efficacy. Positron emission tomography (PET) imaging with cell proliferation probes to assess the clinical outcome during or soon after treatment is becoming acceptable. At present, monitoring DNA synthetic pathways with radiolabeled nucleoside probes that are essential for cell proliferation has been considered a more specific approach to predict tumor response. Among the four nucleosides, thymidine analogues, such as (18)F-FLT, have undergone years of development for clinical practice, while cytidine, adenosine and guanosine analogues receive less attention. Recently, several literatures have demonstrated that PET imaging with radiolabeled cytidine and adenosine analogues may have potential to evaluate immune response after chemotherapy, and may enable the prognosis forecast. In this review, we summarize the results of recent preclinical and clinical studies regarding using radiolabeled nucleoside analogues for predicting and monitoring tumor response in cancer treatment. The preparation protocols of these nucleoside scintigraphic probes are also described.
AuthorsC-Y Wu, H-E Wang, M-H Lin, L-S Chu, R-S Liu
JournalCurrent medicinal chemistry (Curr Med Chem) Vol. 19 Issue 20 Pg. 3315-24 ( 2012) ISSN: 1875-533X [Electronic] United Arab Emirates
PMID22664241 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Review)
Chemical References
  • Antineoplastic Agents
  • Nucleosides
Topics
  • Animals
  • Antineoplastic Agents (therapeutic use)
  • Cell Line, Tumor
  • Humans
  • Isotope Labeling
  • Neoplasms (diagnosis, diagnostic imaging, drug therapy)
  • Nucleosides
  • Positron-Emission Tomography
  • Treatment Outcome

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