Comparative expression of the psoriasin (S100A7) and S100C genes in breast carcinoma and co-localization to human chromosome 1q21-q22

Int J Cancer. 1995 Oct 9;63(2):297-303. doi: 10.1002/ijc.2910630225.


Using differential screening of a breast cancer cDNA library, we isolated a cDNA encoding the psoriasin (S100A7) protein, previously identified in psoriatic epidermis. In the present study, we demonstrate that the psoriasin gene is expressed in breast cancer cell lines and in cancer cells of some breast carcinomas but not in any non-cancerous tissues examined, except skin. Another S100 gene, S100C, which we co-localized with the psoriasin gene to human chromosome 1q21-q22, was found to be expressed in most tissues and cell lines evaluated. These findings add support to the concept that the S100 genes clustered in human chromosome 1q21-q22 are individually controlled and that some of them may be involved in the regulation of cell transformation and/or differentiation.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Breast Neoplasms / genetics*
  • Calcium-Binding Proteins / genetics*
  • Chromosome Mapping
  • Chromosomes, Human, Pair 1
  • Gene Expression Regulation, Neoplastic
  • Humans
  • In Situ Hybridization
  • Molecular Sequence Data
  • Psoriasis / genetics
  • RNA, Messenger / genetics
  • RNA, Neoplasm / genetics
  • S100 Calcium Binding Protein A7
  • S100 Proteins / genetics*
  • Sequence Alignment
  • Sequence Homology, Amino Acid
  • Skin / metabolism
  • Skin Neoplasms / genetics


  • Calcium-Binding Proteins
  • RNA, Messenger
  • RNA, Neoplasm
  • S100 Calcium Binding Protein A7
  • S100 Proteins
  • S100A7 protein, human
  • S100A11 protein, human

Associated data

  • GENBANK/P04271
  • GENBANK/P05109
  • GENBANK/P06702
  • GENBANK/P06703
  • GENBANK/P08206
  • GENBANK/P23297
  • GENBANK/P25815
  • GENBANK/P26447
  • GENBANK/P29034
  • GENBANK/P29377
  • GENBANK/P31151
  • GENBANK/P33763
  • GENBANK/P33764
  • GENBANK/X80198