Heat shock protein 27 overexpression in breast cancer lymph node metastasis.

Abstract:

BACKGROUND:Heat shock protein 27 (hsp-27) is overexpressed in approximately 67% pure ductal carcinoma in situ (DCIS), in approximately 50% DCIS associated with invasive ductal carcinoma (IDC), and in approximately 25% IDC alone. If this decrease in hsp-27 expression has a role in the progression of malignancy in IDC, we postulate a further reduction in expression in nodal metastasis. METHODS:To test this hypothesis, we evaluated the distribution of hsp-27 in primary IDC and in synchronous regional lymph node metastasis within the same patient by immuno-histochemistry. RESULTS:Nine of 30 primary IDCs (30%) and 22 of 30 lymph node metastases (73%) overexpressed hsp-27. Contrary to our hypothesis, of 21 IDCs with no or low hsp-27 expression, 13 (62%) had overexpression of this protein within nodal metastasis. CONCLUSIONS:hsp-27 appears to confer cytoprotection for metastatic cells, which may help explain why hsp-27 overexpression is associated with reduced disease-free survival in breast carcinomas.

journal_name

Ann Surg Oncol

authors

Storm FK,Mahvi DM,Gilchrist KW

doi

10.1007/BF02306091

subject

Has Abstract

pub_date

1996-11-01 00:00:00

pages

570-3

issue

6

eissn

1068-9265

issn

1534-4681

journal_volume

3

pub_type

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