PMID- 24970164 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20140627 LR - 20211021 IS - 2218-273X (Print) IS - 2218-273X (Electronic) IS - 2218-273X (Linking) VI - 3 IP - 1 DP - 2013 Feb 11 TI - Multi-Color Spectral Transcript Analysis (SPECTRA) for Phenotypic Characterization of Tumor Cells. PG - 180-97 LID - 10.3390/biom3010180 [doi] AB - Many human tumors show significant changes in their signal transduction pathways and, thus, the way the cells interact with their environment. Often caused by chromosomal rearrangements, including gene amplifications, translocations or deletions, the altered levels of gene expression may provide a tumor-specific signature that can be exploited for diagnostic or therapeutic purposes. We investigated the utility of multiplexed fluorescence in situ hybridization (FISH) using non-isotopically labeled cDNA probes detected by Spectral Imaging as a sensitive and rapid procedure to measure tumor-specific gene expression signatures. We used a commercially available system to acquire and analyze multicolor FISH images. Initial investigations used panels of fluorescent calibration standards to evaluate the system. These experiments were followed by hybridization of five-to-six differently labeled cDNA probes, which target the transcripts of tyrosine kinase genes known to be differently expressed in normal cells and tumors of the breast or thyroid gland. The relatively simple, yet efficient, molecular cytogenetic method presented here may find many applications in characterization of solid tumors or disseminated tumor cells. Addressing tumor heterogeneity by means of multi-parameter single cell analyses is expected to enable a wide range of investigations in the areas of tumor stem cells, tumor clonality and disease progression. FAU - Hsu, Joanne H AU - Hsu JH AD - Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue North, Seattle, WA 98109, USA. jhhsu11@gmail.com. FAU - Weier, Jingly F AU - Weier JF AD - Life Sciences Division, E.O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA. jinglyw@gmail.com. FAU - Weier, Heinz-Ulrich G AU - Weier HU AD - Life Sciences Division, E.O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA. ugweier@lbl.gov. FAU - Ito, Yuko AU - Ito Y AD - National Institute of Science and Technology Policy (NISTEP), Ministry of Education, Culture, Sports, Science and Technology, Tokyo 100-0005, Japan. itoh@nistep.go.jp. LA - eng GR - R01 CA136685/CA/NCI NIH HHS/United States GR - R01 HD045736/HD/NICHD NIH HHS/United States GR - R44 HD044313/HD/NICHD NIH HHS/United States PT - Journal Article DEP - 20130211 PL - Switzerland TA - Biomolecules JT - Biomolecules JID - 101596414 PMC - PMC4030878 EDAT- 2013/01/01 00:00 MHDA- 2013/01/01 00:01 PMCR- 2013/03/01 CRDT- 2014/06/28 06:00 PHST- 2013/01/09 00:00 [received] PHST- 2013/01/31 00:00 [revised] PHST- 2013/02/04 00:00 [accepted] PHST- 2014/06/28 06:00 [entrez] PHST- 2013/01/01 00:00 [pubmed] PHST- 2013/01/01 00:01 [medline] PHST- 2013/03/01 00:00 [pmc-release] AID - biom3010180 [pii] AID - biomolecules-03-00180 [pii] AID - 10.3390/biom3010180 [doi] PST - epublish SO - Biomolecules. 2013 Feb 11;3(1):180-97. doi: 10.3390/biom3010180.