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- Agnarsdóttir, Margrét,1970-Uppsala universitet,Institutionen för immunologi, genetik och patologi,The Human Protein Atlas Project (författare)
Biomarker Discovery in Cutaneous Malignant Melanoma : A Study Based on Tissue Microarrays and Immunohistochemistry
- BokEngelska2011
Förlag, utgivningsår, omfång ...
- Uppsala :Acta Universitatis Upsaliensis,2011
- 53 s.
- electronicrdacarrier
Nummerbeteckningar
- LIBRIS-ID:oai:DiVA.org:uu-146436
- ISBN:9789155480073
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-146436URI
Kompletterande språkuppgifter
- Språk:engelska
- Sammanfattning på:engelska
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- SwePubSwePub
Klassifikation
Serie
- Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine,1651-6206 ;644
Anmärkningar
- The incidence of cutaneous malignant melanoma has increased dramatically in Caucasians the last few decades, an increase that is partly explained by altered sun exposure habits. For the individual patient, with a localized disease, the tumor thickness of the excised lesion is the most important prognostic factor. However, there is a need to identify characteristics that can place patients in certain risk groups. In this study, the protein expression of multiple proteins in malignant melanoma tumors was studied, with the aim of identifying potential new candidate biomarkers. Representative samples from melanoma tissues were assembled in a tissue microarray format and protein expression was detected using immunohistochemistry. Multiple cohorts were used and for a subset of proteins the expression was also analyzed in melanocytes in normal skin and in benign nevi. The immunohistochemical staining was evaluated manually and for part of the proteins also with an automated algorithm. The protein expression of STX7 was described for the first time in tumors of the melanocytic lineage. Stronger expression of STX7 and SOX10 was seen in superficial spreading melanomas compared with nodular malignant melanomas. An inverse relationship between STX7 expression and T-stage was seen and between SOX10 expression and T-stage and Ki-67, respectively. In a population-based cohort the expression of MITF was analyzed and found to be associated with prognosis. Twenty-one potential biomarkers were analyzed using bioinformatics tools and a protein signature was identified which had a prognostic value independent of T-stage. The protein driving this signature was RBM3, a protein not previously described in malignant melanoma. Other markers included in the signature were MITF, SOX10 and Ki-67. In conclusion, the protein expression of numerous potential biomarkers was extensively studied and a new prognostic protein panel was identified which can be of value for risk stratification.
Ämnesord och genrebeteckningar
- MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Cell- och molekylärbiologi hsv//swe
- MEDICAL AND HEALTH SCIENCES Basic Medicine Cell and Molecular Biology hsv//eng
- antibody-based proteomics
- automated analysis
- biomarker
- immunohistochemistry
- malignant melanoma
- survival
- tissue microarray
- Tumour biology
- Tumörbiologi
- Pathology
- Patologi
- Molecular medicine
- Molekylär medicin
- Medical Science
- Medicinsk vetenskap
- Pathology
- Patologi
Biuppslag (personer, institutioner, konferenser, titlar ...)
- Ponten, Fredrik,ProfessorUppsala universitet,Molekylär och morfologisk patologi (preses)
- Naredi, Peter,ProfessorKirurgisk och perioperativ vetenskap, Umeå universitet (opponent)
- Uppsala universitetInstitutionen för immunologi, genetik och patologi (creator_code:org_t)
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