The Tissue Accrual and In Situ Imaging Core is responsible for accrual of human melanomas, nevi and blood sample, for in situ imaging of melanoma- associated antigens and RNA species in sections of human melanomas and nevi, and for the provision of expert pathological interpretation of histological data. Refined immunohistochemical methods have been developed that enable the identification of antigens in archival tissue without requiring expensive and C special handling including frozen specimens or special fixatives. In situ hybridization procedures using biotinylated oligonucleotide probes are used to identify mRNA for important melanoma- associated antigens. Antibodies and/or probes that are available in fixed tissue include the immune co-stimulatory molecule B7 (project of D. Guerry), TGFbeta1-3 (U. Rodeck), an MUC18 (M. Herlyn). The fresh tissue accrued by the Core has already resulted in one of the largest collections of primary melanocytic cell cultures (M. Herlyn), and in a very large collection of freshly isolated DNA used for genetic studies (A, Linnenback). The Core has extensive access to human tissue biopsies including thousands of pigmented lesions in the affiliated laboratories of Surgical Pathology (20,000 accessions/year) and of dermatopathology (40,000). This tissue is available for the evaluation of new antibodies produced in the projects of D. Speicher and D. Herlyn, and for the molecular in situ studies planned in Dr. Linnenbach's project. Expertise in all aspects of the pathological diagnosis and classification of melanocytic neoplasms is provided to the projects on a continuing basis.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Program Projects (P01)
Project #
3P01CA025874-23S2
Application #
6659182
Study Section
Project Start
2002-05-01
Project End
2003-04-30
Budget Start
1998-10-01
Budget End
1999-09-30
Support Year
23
Fiscal Year
2002
Total Cost
$312,755
Indirect Cost
Name
Wistar Institute
Department
Type
DUNS #
042250712
City
Philadelphia
State
PA
Country
United States
Zip Code
19104
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