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Minerva Chirurgica 2013 February;68(1);87-95

language: English

CD133 is a selective marker of CRC?

Del Rio P. 1, Bonati E. 1, Crafa P. 2, Campanini N. 2, Montana C. 1, Bezer L. 1, Dell’abate P. 1, Sianesi M. 1

1 Unit of Surgery and Organ Transplantation University Hospital of Parma, Parma, Italia;
2 Unit of Pathology, University Hospital of Parma Parma, Italia


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Aim: The aim of our study is to evaluate the surface glycoprotein CD133 as marker of cancer stem cells, as independent prognostic pattern of survival and its positive expression ratio to a chemotherapy increased resistance.
Methods: The study include our patient, affected by colorectal cancer (CRC) and underwent to surgery at University Hospital of Parma, with curative intent, with a follow up of 5 years; 47 cases were considered. All the cancer-case was considered independently by the histological grade. The monoclonal antibody CD133/1 (clone AC133-MAC, Miltenyi Bioetec, Auburn CA 95602, USA) that recognizes the epitope 1 of CD133 was utilized for the immunohistochemical process.
Results: On the total of 47 patients taken in exam, 8 were excluded for lack of date, 13 were lost during the follow-up. The final number of patients included in the study was 26(17 males and 9 females), medium age of 72.2 years. 2 Stage I, 8 Stage II A, 1 II B, 2 III A, 5 III B, 5 IIIC and 3 IV. Despite for 1, 25 on 26 patients were positive to CD133 (96.5 %), with different dye intensity, directly related at the positive cell pull. The CD133 positivity wasn’t therefore related at any other clinic-pathological characteristic.
Conclusion: The results obtained from our study goes in the same direction with others, that confirm a high representation of CD133 on the colic tumoral epithelium. It will be appropriate to do prospected and randomized studies, with a larger casistic, utilizing similar methods and a patients populations with more uniform characteristics, to verify the real role of CD133 and other molecules potentially marker of tumoral stem cell (TSC).

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paolo.delrio@unipr.it