当前位置： SCI文献检索 > JOURNAL OF SURGICAL ONCOLOGY期刊下所有文献 > Prognostic significance of mRNA-encoding estrogen receptor and epithelial growth factor receptor in breast carcinoma progression into lymph nodes: 1. Estrogen receptor encoding mRNA.

Prognostic significance of mRNA-encoding estrogen receptor and epithelial growth factor receptor in breast carcinoma progression into lymph nodes: 1. Estrogen receptor encoding mRNA.

Abstract：

:The main objective of this study was to differentiate between lymph nodes infiltrated by estrogen receptor-positive (ER+) and estrogen receptor-negative (ER-) breast carcinoma. Lymph nodes were obtained from 40 postmenopausal cancer patients, 10 from each disease stage. Six patients from each group had estrogen receptor-positive (BCaER+) and four estrogen receptor-negative (BCaER-) tumors. Both tumor-containing (T) and uninvolved (N) lymph nodes from the same patient were examined by the following parameters: magnitude of lymph node nucleic acid hybridization with cDNA probes from breast cancer MCF-7ER+ and MCF-7ER- cells; and binding capacity of 3H-estradiol, 125I-EGF, and 125I-PDGF binding and protein kinase C activities of the lymph nodes. Concomitant with the appearance of transformed cells, several events occur: Tumor cells induce stimulation of mononuclear cells and macrophages and evoke T- and B-cell proliferation, leading to the synthesis of tumor cell membrane-associated antibodies. In estrogen receptor-positive (ER+) breast carcinoma, estrogens and host hormonal modulatory mechanisms stimulate production and release of epithelial growth (EGF) and platelet-derived growth factors (PDGF). These factors are characterized by protein kinase C activities. There is infiltration of tumor cells into the lymph node and infiltration of leukocytes into the tumor site. In the lymph node, tumor progression depends on tumor cell proliferation rate and metastatic aggressiveness. The experiments described in this study document the changes that occur in lymph nodes, with differences between nodes infiltrated with BCaER+ and BCaER- breast carcinomas. Hybridization of 32P-cDNA from MCF-7ER+ cells with cellular RNA from BCaER+ involved (T) lymph nodes is greater than with cellular RNA from uninvolved (N) lymph nodes. The magnitude of hybridization correlated (P less than 0.005) with the disease stage.

journal_name

J Surg Oncol

journal_title

Journal of surgical oncology

authors

Hakim AA

doi

10.1002/jso.2930400107

subject

Has Abstract

pub_date

1989-01-01 00:00:00

pages

21-31

issue

eissn

0022-4790

issn

1096-9098

journal_volume

pub_type

杂志文章

在线工具

Prognostic significance of mRNA-encoding estrogen receptor and epithelial growth factor receptor in breast carcinoma progression into lymph nodes: 1. Estrogen receptor encoding mRNA.