PMID- 18262045 OWN - NLM STAT- MEDLINE DCOM- 20080429 LR - 20081121 IS - 0165-4608 (Print) IS - 0165-4608 (Linking) VI - 181 IP - 1 DP - 2008 Feb TI - Molecular cytogenetic characterization of human breast cancer cell line MDA-MB-468 and its variant 468LN, which displays aggressive lymphatic metastasis. PG - 1-7 LID - 10.1016/j.cancergencyto.2007.05.030 [doi] AB - Two human breast carcinoma cell lines, MDA-MB-468 and its variant MDA-MB-468LN, which displays aggressive lymphatic metastasis, were investigated for molecular cytogenetic characteristics using G-banding, spectral karyotyping, and fluorescence in situ hybridization (FISH). Both cell lines have multiple chromosome aberrations, but differ in the types of rearrangements and their breakpoints. The MDA-MB-468 karyotype identified in the present study differs from that previously reported, which suggests that this cell line is unstable. Neither cell line exhibited amplification of ERBB2 (alias HER-2) by FISH. MDA-MB-468 cells have a modal number of 60, with 42 types of aberrations: 11 numerical and 31 structural. 468LN cells have a modal number of 55, with 37 types of aberrations: 10 numerical and 27 structural. The most common aberrations in MDA-MB-468 cells were der(5)t(5;16), i(7)(p10), i(18)(p10), der(19)t(2;19), del(6)(q23), and der(10)t(1;10). The most common aberrations in 468LN cells were der(18)t(10;18), +5, der(1;7)(q10;q10), der(19)t(2;18;19), and der(20)t(20;21). This cytogenetic result is consistent with previous findings that showed differences in tumorigenicity and metastatic capability of these two cell lines and indicates that 468LN is a new cell line distinctive from MDA-MB-468. We hypothesize that the cytogenetic changes in 468LN may be related to its new biological characteristics. Knowledge of the chromosome aberrations and breakpoints identified could be useful for further genetic and epigenetic studies of breast cancer. FAU - Xu, Jie AU - Xu J AD - Cytogenetics Laboratory, London Health Sciences Centre, University of Western Ontario, 375 South Street, Room N258, London, Ontario N6A 4G5, Canada. Jie.Xu@lhsc.on.ca FAU - Chambers, Ann F AU - Chambers AF FAU - Tuck, Alan B AU - Tuck AB FAU - Rodenhiser, David I AU - Rodenhiser DI LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 RN - 147336-22-9 (Green Fluorescent Proteins) SB - IM MH - Breast Neoplasms/*genetics/*pathology MH - Cell Line, Tumor MH - Chromosome Aberrations MH - Female MH - Gene Rearrangement MH - Genetic Variation MH - Green Fluorescent Proteins/genetics MH - Humans MH - Lymphatic Metastasis/*pathology MH - Mutagenesis, Insertional MH - Sequence Deletion MH - Transfection EDAT- 2008/02/12 09:00 MHDA- 2008/04/30 09:00 CRDT- 2008/02/12 09:00 PHST- 2007/02/12 00:00 [received] PHST- 2007/05/04 00:00 [accepted] PHST- 2008/02/12 09:00 [pubmed] PHST- 2008/04/30 09:00 [medline] PHST- 2008/02/12 09:00 [entrez] AID - S0165-4608(07)00589-4 [pii] AID - 10.1016/j.cancergencyto.2007.05.030 [doi] PST - ppublish SO - Cancer Genet Cytogenet. 2008 Feb;181(1):1-7. doi: 10.1016/j.cancergencyto.2007.05.030.