Use of laser capture microdissection allows detection of loss of heterozygosity in chromosome 9p in breast cancer

  • Authors:
    • Margarida Figueiredo Dias
    • Robert Blumenstein
    • Jose Russo
  • View Affiliations

  • Published online on: March 22, 2017     https://doi.org/10.3892/ol.2017.5892
  • Pages: 3831-3836
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

The present study was designed to determine whether loss of heterozygosity (LOH) in the p arm of chromosome 9 in invasive ductal carcinoma of the breast is detected during the neoplastic progression of the disease. Using laser capture microdissection (LCM) epithelial cells were isolated from 14 invasive ductal carcinoma cases (IDC), ductal carcinomas in situ (DCIS), normal mammary lobules, skin and/or lymph nodes of paraffin embedded tissue sections. LOH analysis of chromosome 9p was performed utilizing the microsatellite markers D9S199, D9S157, D9S171, D9S265 and D9S270. The highest frequency of LOH was observed in invasive ductal carcinomas, which reached a maximum at the 9p22‑23 chromosomal location (D9S157). In addition, DCIS lesions presented a high frequency of LOH in 9p22‑23 (D9S157), followed by 9p21 (D9S171), D9S199 and D9S265, which were similar in frequency to those observed in IDC. A novel finding was the intralesional heterogeneity in LOH within the same DCIS or IDC case. This is an indication that clones of cells that differ in genetic composition coexist in the same lesion. Notably, phenotypically normal breast tissues adjacent to IDC or DCIS exhibited LOH at D9S157 and/or D9S171. Together, these data indicate that LOH of chromosome arm 9p occurs very early in the progression of cancer and that different clones of cells co‑exist within a single tumor.
View Figures
View References

Related Articles

Journal Cover

May-2017
Volume 13 Issue 5

Print ISSN: 1792-1074
Online ISSN:1792-1082

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Dias MF, Blumenstein R and Russo J: Use of laser capture microdissection allows detection of loss of heterozygosity in chromosome 9p in breast cancer. Oncol Lett 13: 3831-3836, 2017
APA
Dias, M.F., Blumenstein, R., & Russo, J. (2017). Use of laser capture microdissection allows detection of loss of heterozygosity in chromosome 9p in breast cancer. Oncology Letters, 13, 3831-3836. https://doi.org/10.3892/ol.2017.5892
MLA
Dias, M. F., Blumenstein, R., Russo, J."Use of laser capture microdissection allows detection of loss of heterozygosity in chromosome 9p in breast cancer". Oncology Letters 13.5 (2017): 3831-3836.
Chicago
Dias, M. F., Blumenstein, R., Russo, J."Use of laser capture microdissection allows detection of loss of heterozygosity in chromosome 9p in breast cancer". Oncology Letters 13, no. 5 (2017): 3831-3836. https://doi.org/10.3892/ol.2017.5892