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Expression profiles of p53, p21, bax and bcl-2 proteins in all-trans-retinoic acid treated primary and metastatic melanoma cells.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Biomedicine and Surgery, Division of dermatology and venereology.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Biomedicine and Surgery, Division of dermatology and venereology. Östergötlands Läns Landsting, Centre for Medicine, Department of Dermatology and Venerology in Östergötland.
2004 (English)In: International Journal of Oncology, ISSN 1019-6439, Vol. 25, no 2, 303-308 p.Article in journal (Refereed) Published
Abstract [en]

We have previously shown that all-trans-retinoic acid (atRA) induces apoptosis in melanoma cells and primary melanoma cells are more sensitive to the exposure of atRA than the matched metastases. However, mechanisms behind the atRA-induced apoptosis have not been studied. In this study, we used a similar cell culture model system of matched primary and metastatic melanoma cells from the same patient to investigate whether p53 and bcl-2 family proteins were involved in atRA-induced apoptosis. The primary and metastatic melanoma cells were exposed to 0.1 and 10 micro M atRA in serum-free RPMI 1640 cell culture medium in the dark for up to 96 h. The protein expression of p53, p21, bax and bcl-2 were examined by Western blotting and immunocytochemistry. Expression of p53, p21 and bax was increased, and bcl-2 was decreased in melanoma cells after exposure to atRA at different concentrations for various periods of time. The changes of p53, p21, bax, and bcl-2 protein levels were dose- and time-dependent. The primary melanoma cells were more sensitive to the atRA treatments than cells from matched metastatic melanoma. These data indicate that p53, p21, bax and bcl-2 proteins were involved in atRA-induced apoptosis in melanoma cells. Modification of these protein levels in the tumour cells might be beneficial for early treatment of melanoma.

Place, publisher, year, edition, pages
2004. Vol. 25, no 2, 303-308 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-23728Local ID: 3235OAI: oai:DiVA.org:liu-23728DiVA: diva2:244043
Available from: 2009-10-07 Created: 2009-10-07 Last updated: 2017-12-13

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Zhang, HongRosdahl, Inger

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Zhang, HongRosdahl, Inger
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Faculty of Health SciencesDivision of dermatology and venereologyDepartment of Dermatology and Venerology in Östergötland
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International Journal of Oncology
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