title: Screening preeclamptic cord plasma for proteins associated with decreased breast cancer susceptibility.
abstract: Preeclampsia, a complication of pregnancy characterized by hypertension and proteinuria, has been found to reduce the subsequent risk for breast cancer in female offspring. As this protective effect could be due to exposure to preeclampsia-specific proteins during intrauterine life, the proteomic profiles of umbilical cord blood plasma between preeclamptic and normotensive pregnancies were compared. Umbilical cord plasma samples, depleted of 14 abundant proteins, were subjected to proteomic analysis using the quantitative method of nanoACQUITY ultra performance liquid chromatography-mass spectrometry with elevated energy mode of acquisition(E) (NanoUPLC-MS(E)). Sixty-nine differentially expressed proteins were identified, of which 15 and 6 proteins were only detected in preeclamptic and normotensive pregnancies, respectively. Additionally, expression of 8 proteins (gelsolin, complement C5, keratin type I cytoskeletal 10, pigment epithelium-derived factor, complement factor B, complement component C7, hemoglobin subunit gamma-2 and alpha-fetoprotein) were up-regulated in preeclampsia with a fold change of ≥2.0 when compared to normotensive pregnancies. The identification of alpha-fetoprotein in preeclamptic umbilical cord blood plasma supported the validity of this screen as alpha-fetoprotein has anti-estrogenic properties and has previously been linked to preeclampsia as well as a reduced breast cancer risk. The findings of this pilot study may provide new insights into the mechanistic link between preeclampsia and potentially reduced breast cancer susceptibility in adult life.
authors.affiliation: Department of Cancer Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
authors.forename: Hoi Pang
authors.initials: HP
authors.lastname: Low
authors.affiliation: Department of Chemistry, Michigan Technological University, Houghton, MI 49931, USA.
authors.forename: Ashutosh
authors.initials: A
authors.lastname: Tiwari
authors.affiliation: Department of Chemistry, Michigan Technological University, Houghton, MI 49931, USA.
authors.forename: Jagadeesh
authors.initials: J
authors.lastname: Janjanam
authors.affiliation: Department of Cancer Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
authors.forename: Li
authors.initials: L
authors.lastname: Qiu
authors.affiliation: Department of Cancer Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
authors.forename: Chien-I
authors.initials: CI
authors.lastname: Chang
authors.affiliation: Department of Obstetrics and Gynecology, Tufts Medical Center, Boston, MA 02111, USA.
authors.forename: William C
authors.initials: WC
authors.lastname: Strohsnitter
authors.affiliation: Department of Obstetrics and Gynecology, Tufts Medical Center, Boston, MA 02111, USA.
authors.forename: Errol R
authors.initials: ER
authors.lastname: Norwitz
authors.affiliation: Proteomics and Mass Spectrometry Facility, Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01545, USA.
authors.forename: Sun W
authors.initials: SW
authors.lastname: Tam
authors.affiliation: Proteomics and Mass Spectrometry Facility, Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01545, USA.
authors.forename: James E
authors.initials: JE
authors.lastname: Evans
authors.affiliation: Proteomics and Mass Spectrometry Facility, Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01545, USA.
authors.forename: Karin M
authors.initials: KM
authors.lastname: Green
authors.affiliation: Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.
authors.forename: Joao A
authors.initials: JA
authors.lastname: Paulo
authors.affiliation: Department of Medical Epidemiology and Biostatistics, Karolinska Institute, SE171 77 Stockholm, Sweden.
authors.forename: Mats
authors.initials: M
authors.lastname: Lambe
authors.affiliation: Department of Cancer Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA. Electronic address: chung-cheng.hsieh@umassmed.edu.
authors.forename: Chung-Cheng
authors.initials: CC
authors.lastname: Hsieh
mesh_terms: D001798:Blood Proteins / Q000032:analysis*; D001943:Breast Neoplasms / Q000097:blood* / Q000737:chemistry; D002853:Chromatography, Liquid; D004198:Disease Susceptibility; D005260:Female; D005312:Fetal Blood / Q000737:chemistry* / Q000378:metabolism; D006801:Humans; D013058:Mass Spectrometry; D010865:Pilot Projects; D011225:Pre-Eclampsia / Q000097:blood*; D011247:Pregnancy; D040901:Proteomics
chemical_list: D001798:Blood Proteins
keywords: Biomarkers; Intrauterine environment; Mass spectrometry; Preeclampsia; Pregnancy; Prenatal