Linked Life Data

2118485

Source:http://linkedlifedata.com/resource/pubmed/id/2118485

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1990-10-9
pubmed:abstractText
We have investigated the relationship between in vitro cultivation of autologous melanoma metastases derived from different patients and their levels of expression of class-I and -II major histocompatibility complex (MHC) antigens and melanoma-associated antigens (MAAs). Cell cultures were established from 23 individual metastatic melanoma lesions from 10 patients and were tested early after isolation (between 3rd and 10th passages) for both constitutive expression and modulation by recombinant human leukocyte (IFN-alpha), fibroblast (IFN-beta) or immune (IFN-gamma) interferon of MHC antigens and MAA. All of the melanoma cell lines displayed altered antigen expression following IFN treatment. While in vitro cultures derived from different individuals varied in both constitutive and IFN-modified antigenic expression, cultures of autologous metastases derived from the same patient were very similar. In addition, differences in antigenic profile were apparent when early-passage in vitro cultures were compared with the same melanoma lesion, not established in culture, from which they were derived. The unique de novo and IFN-modified antigenic phenotype of cultures derived from different patients indicates that the antigenic phenotype displayed by melanoma cultures grown in vitro is genetically determined. The differences found between in vitro cultures and their corresponding in vivo lesions, as well as the antigenic heterogeneity displayed by multiple autologous melanoma lesions in vivo, suggest that the in vivo antigenic phenotype may be determined, at least in part, at an epigenetic level.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0020-7136
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
46
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
539-45
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Modulation of the antigenic phenotype of early-passage human melanoma cells derived from multiple autologous metastases by recombinant human leukocyte, fibroblast and immune interferon.
pubmed:affiliation
Immunology Department, Istituto Regina Elena, Rome, Italy.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't