Abstract:
:Incomplete spontaneous regression of melanoma is common. However, complete melanoma regression is still a very rare phenomenon. Because melanoma is the most immunogenic human malignancy, the mechanisms leading to regression, based on accumulative evidence, are the host's immune responses. Unfortunately, therapies aiming to enhance the patient's natural immunity against melanoma have yet to meet their expectations. Reasons for failure include various immune escape mechanisms, induced by the tumor, that subsequently lead to tolerance. Here, we performed time-dependent gene expression profiling to unravel molecular changes involved in the transition of progressive melanoma to complete tumor regression using a porcine model. The melanoblastomabearing Libechov minipigs are highly suitable for this study because these animals exhibit naturally occurring and regressing melanomas. We were able to identify a molecular signature of the melanoma regression process. Genes regulated in this signature were associated with 1) cell cycle, 2) immune response, and 3) melanocyte differentiation. These genes may shed light on molecular mechanisms involved in complete melanoma regression and indicate what improvements are needed for successful antimelanoma therapy.
journal_name
Neoplasiajournal_title
Neoplasia (New York, N.Y.)authors
Rambow F,Piton G,Bouet S,Leplat JJ,Baulande S,Marrau A,Stam M,Horak V,Vincent-Naulleau Sdoi
10.1593/neo.08344subject
Has Abstractpub_date
2008-07-01 00:00:00pages
714-26, 1 p following 726issue
7eissn
1522-8002issn
1476-5586journal_volume
10pub_type
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