4.4 Article

Application of Deuteporfin in the Metastatic Lymph Node Mapping of Pancreatic Cancer: An invivo Study

Journal

PHOTOCHEMISTRY AND PHOTOBIOLOGY
Volume 92, Issue 2, Pages 325-330

Publisher

WILEY-BLACKWELL
DOI: 10.1111/php.12574

Keywords

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Funding

  1. National Natural Science Foundation of China [81201896, 81071884, 81472221]
  2. Research Fund for the Doctoral Program of Higher Education of China [20130071110052, 20110071110065]
  3. Key Project of National Health and Planning Commission of the PRC on General Surgery
  4. Key Project of National Health and Planning Commission of the PRC on Oncology

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For most cancer patients, the presence of metastatic lymph nodes usually indicates regional recurrence and poor prognosis. Therefore, lymph node mapping is a requisite for disease staging, prognosis prediction and decision making in the treatment of cancer. Deuteporfin, a second-generation photosensitizer, has a maximum excitation wavelength that can reach the near infrared (NIR) region (650-700nm). We aimed to take advantage of these aspects of deuteporfin and use it as a fluorescent probe for metastatic lymph node mapping invivo using NIR fluorescent imaging. In our study, we further investigated whether a photosensitizer could be used as a tracer for metastatic lymph node mapping of pancreatic cancer based on previous reports. Compared to normal tissues, tumor tissues including primary tumors and metastatic lymph nodes had a higher uptake ability of deuteporfin (P<0.05). Our research confirmed this targeting property of deuteporfin using invivo fluorescent imaging. Consistent with observations from invivo imaging experiments, frozen sections of metastatic lymph nodes intuitively displayed significantly higher and wider distributions of deuteporfin than normal sections.

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