Rearrangement of the long arm of chromosome 10 in the prostate adenocarcinoma cell line LNCaP

Cancer Genetics and Cytogenetics
S FordN K Spurr

Abstract

Rearrangement of distal 10q is a common feature of many tumor types and tumor-derived cell lines. More specifically, loss of 10q23-25 has been demonstrated in a large proportion of prostate tumors, indicative of the presence of a tumor suppressor gene at this location. Using whole-chromosome paints and human genomic YAC clones as FISH probes, we have performed a detailed cytogenetic analysis of distal 10q rearrangements in the prostate adenocarcinoma cell line LNCaP. Our data reveal nonreciprocal translocation of 10q24.1-qter material to two sites on chromosome 5q, giving der(5)t(5;10) (q14-23;q24.1)t(5;10)(q35;q24.2) loss of 10q material at the 10q24.1 breakpoint. Deleted chromatin at the distal breakpoint includes the cytochrome P450IIC (CYP2C) gene cluster, thought to be involved in steroid hormone metabolism and therefore of possible significance to the growth rate of this androgen-dependent cell line. Deleted material at the proximal breakpoint overlaps with a region of deletion at the 10q23-24 boundary recently identified in a high proportion of prostate tumors, adding to the evidence for a tumor suppressor gene in this interval.

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Citations

Aug 6, 1999·Cancer Investigation·R S VermaC J Godec
Feb 24, 2006·Cancer Genetics and Cytogenetics·Sheryl M GoughChristine M Morris
Dec 24, 2002·The Prostate·Hideyasu MatsuyamaPeter Ekman
May 27, 2010·International Journal of Legal Medicine·Abd Rashid Nur HaslindawatyZainuddin Zafarina
Jul 11, 2000·The Journal of Biological Chemistry·K NagasawaM Nakanishi

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