Differential expression of IGFBP-5 and two human ESTs in thyroid glands with goiter, adenoma and papillary or follicular carcinomas.
Here, we describe the identification of three human genes with altered expression in thyroid diseases. One of them corresponds to insulin-like growth factor binding protein 5 (IGFBP5), which has already been described as over expressed in other cancers and, for the first time, is identified as overexpressed in thyroid tumors. The other genes, named 44 and 199, are ESTs with yet unknown function and were mapped on human chromosomes seven and four, respectively. We determined by RT-PCR the expression level of these genes in ten samples of disease-free thyroid, ten of goiter, nine of papillary carcinoma, ten of adenoma and seven of follicular carcinoma and the significance of observed differences was statistically determined. IGFBP-5 and gene 44 were significantly overexpressed in papillary carcinoma when compared to normal and goiter. Genes 44 and 199 were differentially expressed in follicular carcinoma and adenoma when compared to normal thyroid tissue.
Stolf
Beatriz S
BS
Ludwig Institute for Cancer Research, Rua Professor Antonio Prudente 109, São Paulo 01509-010, Brazil.
Carvalho
Alex F
AF
Martins
Waleska K
WK
Runza
Franco B
FB
Brun
Marcel
M
Hirata
Roberto
R
Jordão Neves
Eduardo
E
Soares
Fernando A
FA
Postigo-Dias
Juan
J
Kowalski
Luis P
LP
Reis
Luiz F L
LF
D018263:Adenocarcinoma, Follicular / Q000235:genetics* / Q000378:metabolism / Q000473:pathology; D000236:Adenoma / Q000235:genetics* / Q000378:metabolism / Q000473:pathology; D015139:Blotting, Southern; D002291:Carcinoma, Papillary / Q000235:genetics* / Q000378:metabolism / Q000473:pathology; D002894:Chromosomes, Human, Pair 4 / Q000235:genetics; D002897:Chromosomes, Human, Pair 7 / Q000235:genetics; D017931:DNA Primers / Q000737:chemistry; D003937:Diagnosis, Differential; D020224:Expressed Sequence Tags; D020869:Gene Expression Profiling; D006042:Goiter / Q000235:genetics* / Q000378:metabolism / Q000473:pathology; D006801:Humans; D018975:Insulin-Like Growth Factor Binding Protein 5 / Q000235:genetics* / Q000378:metabolism; D012333:RNA, Messenger / Q000032:analysis; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013961:Thyroid Gland / Q000378:metabolism; D013964:Thyroid Neoplasms / Q000235:genetics* / Q000378:metabolism / Q000473:pathology
D017931:DNA Primers; D018975:Insulin-Like Growth Factor Binding Protein 5; D012333:RNA, Messenger