Oncotarget

Research Papers:

Premature ovarian aging in BRCA carriers: a prototype of systemic precocious aging?

Irit Ben-Aharon _, Mattan Levi, David Margel, Rinat Yerushalmi, Shulamith Rizel, Shlomit Perry, Eran Sharon, Noa Hasky, Ronit Abir, Benny Fisch, Ana Tobar, Ruth Shalgi and Salomon Marcello Stemmer

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Oncotarget. 2018; 9:15931-15941. https://doi.org/10.18632/oncotarget.24638

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Abstract

Irit Ben-Aharon1,5,*, Mattan Levi2,*, David Margel1,5, Rinat Yerushalmi1,5, Shulamith Rizel1, Shlomit Perry1,5, Eran Sharon3,5, Noa Hasky2, Ronit Abir4,5, Benny Fisch4,5, Ana Tobar6, Ruth Shalgi2 and Salomon Marcello Stemmer1,5

1Institute of Oncology, Davidoff Center, Rabin Medical Center, Beilinson Campus, Petach Tikva, Israel

2Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel-Aviv University, Ramat Aviv, Tel-Aviv, Israel

3Department of Surgery, Rabin Medical Center, Beilinson Campus, Petach Tikva, Israel

4IVF and Infertility Unit, Schneider Women Hospital, Rabin Medical Center, Beilinson Campus, Petach Tikva, Israel

5Sackler Faculty of Medicine, Tel-Aviv University, Ramat Aviv, Tel-Aviv, Israel

6Department of Pathology, Rabin Medical Center, Petach Tikva, Israel

*These authors have contributed equally to this work

Correspondence to:

Irit Ben-Aharon, email: iritbenaharon@gmail.com

Keywords: BRCA; ovarian aging; systemic precocious aging

Received: December 01, 2017     Accepted: February 27, 2018     Published: March 23, 2018

ABSTRACT

Purpose: Though former evidence implies a correlation of breast cancer susceptibility gene (BRCA) mutation with reduced ovarian reserve, the data is yet inconsistent. Our aim was to investigate biomarkers of ovarian aging in a cohort of young healthy carriers of the BRCA mutation. We hypothesized that the role played by BRCA genes in aging pathways is not exclusive to the ovary.

Experimental Design: Healthy female BRCA carriers, 40 years or younger and healthy male BRCA carriers, 50 years or younger, were enrolled in the study. Serum anti-mullerian Hormone (AMH), fibroblast growth factor-23 (FGF-23), Klotho and IL-1 were measured by enzyme-linked immunosorbent assay (ELISA). Ovarian AMH and protein kinase B (AKT) mRNA from BRCA carriers who underwent prophylactic oophorectomy and from age-matched, healthy, non-carriers who underwent partial oophorectomy due to benign conditions were analyzed by qPCR.

Results: Thirty-three female (median age 35y) and 20 male (44y) BRCA carriers were enrolled into the study and matched to control non-carriers (34y and 43y, respectively). Serum AMH level was significantly lower in BRCA female carriers than in both non-carrier controls and age-matched nomograms. The levels of ovarian AMH and AKT mRNA were significantly lower in carriers than in controls. The systemic aging cytokines FGF-23, klotho and IL-1 displayed a differential expression in carriers of both genders. FGF-23 level was higher in carriers (P=0.06).

Conclusions: Our results suggest a link between BRCA mutation, accelerated ovarian aging and systemic aging-related pathophysiology.


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