PARP9 is overexpressed in human breast cancer and promotes cancer cell migration.

Abstract:

:Poly(ADP-Ribose) polymerase family member 9 (PARP9) promotes the proliferation, survival and chemotherapy resistance in lymphoma and prostate cancer. The expression and function of PARP9 in human breast cancer remains unknown. In the present study, it was demonstrated that PARP9 is frequently overexpressed in human breast cancer. In 57 normal breast tissues, the expression of PARP9 was not detected in 43 cases (75.4%), but low levels of PARP9 were detected in 13 cases (22.8%), and modest levels of PARP9 (PARP9/GAPDH ratio ~1:1) were detected in only 1 case (1.7%). In contrast, the expression of PARP9 was detected in all 57 breast cancer tissues, in which the levels of PARP9 were higher than that in paired normal breast tissues. In addition, high levels of PARP9 were detected in 43.8% of breast cancer tissues. Overexpression of PARP9 was negatively associated with estrogen receptor expression, and positively associated with axillary lymph node metastasis. However, PARP9 expression was not associated with other clinicopathological parameters, including age, HER-2 and tumor size. Furthermore, PARP9-knockdown inhibited breast cancer cell migration. These data indicate that PARP9 may promote breast cancer progression.

journal_name

Oncol Lett

journal_title

Oncology letters

authors

Tang X,Zhang H,Long Y,Hua H,Jiang Y,Jing J

doi

10.3892/ol.2018.9124

subject

Has Abstract

pub_date

2018-09-01 00:00:00

pages

4073-4077

issue

3

eissn

1792-1074

issn

1792-1082

pii

OL-0-0-9124

journal_volume

16

pub_type

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