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Paternal preconception phthalates and reproductive health - potential mediation through sperm DNA methylation.

Award Number: R01ES028298
ORGANIZATION: NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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SUMMARY Phthalates, a class of endocrine disrupting compounds (EDCs) used in plastics and personal care products, are ubiquitous environmental contaminants resulting in widespread human exposure. Epidemiologic data implicate paternal phthalates with adverse reproductive health including poor sperm quality, and more recently, with longer time to pregnancy - the latter suggests a semen-derived effect. Traditionally, sperm have been considered vehicles only for the delivery of the paternal genome upon fertilization. However, compelling animal data demonstrate that environmental conditions in adulthood are embodied within sperm without altering the underlying DNA sequence, and in turn, these alterations affect offspring health and development. A biological pathway for this paternal contribution to reproductive success has been shown to include aberrations in sperm DNA methylation. To date, research in this area has been largely restricted to the effects of nutritional manipulations in animal models; therefore, relatively little is known about how adult exposures to toxicants affect epigenetic information in sperm – especially in human populations. We propose that a key to understanding how adult exposures to phthalates impact reproductive health lies within sperm DNA methylation. This application capitalizes on the concurrent sample collection from the Sperm Environmental Epigenetics and Development Study (SEEDS; PI: Richard Pilsner) and the Environmental and Reproductive Health Study (EARTH; PI Russ Hauser), two independent epidemiologic studies investigating the link between paternal phthalate exposure and adverse reproductive health among in vitro fertilization (IVF) populations. Moreover, to address potential generalizability issues stemming from IVF cohorts, we also include in our replication aim, sperm methylation analyses from samples collected from the Longitudinal Investigation of Fertility and the Environment (LIFE; PI Germaine Buck Louis) study, a prospective cohort of couples representing the general population. For our first aim, genome-wide methylation will be analyzed via Illumina’s EPIC array on isolated sperm remaining after in-vitro fertilization (IVF) from SEEDS. Next, we will determine the relationships of sperm methylome and on the reproductive outcomes of embryo quality and probability of a live birth in SEEDS. Finally, after completion of these objectives in SEEDS, we will perform replication studies in sperm samples from EARTH and LIFE to determine the concordance of findings across the three cohorts. The proposed research is expected to uncover pathways linking paternal phthalate exposures with adverse reproductive outcomes via sperm DNA methylation. Characterization of potential intermediate pathways between the exposure and outcome continuum is of significant importance because it will inform avenues of translational research for the development of novel approaches to treat and prevent adverse reproductive health.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2023 ( Subtotal = $503,073 )
2023	2023	WAYNE STATE UNIVERSITY	5057 WOODWARD STE 13001	DETROIT	MI	48202	WAYNE	USA	Environmental Health	000	5	5/18/2023	NON-COMPETING CONTINUATION	$503,073
														Subtotal = $503,073

Issue Date FY: 2022 ( Subtotal = $0 )
2022	2021	WAYNE STATE UNIVERSITY	5057 WOODWARD STE 13001	DETROIT	MI	48202	WAYNE	USA	Environmental Health	000	4	7/22/2022	CHANGE OF GRANTEE / TRAINING INSTITUTION / AWARDING INSTITUTION	$0
														Subtotal = $0

Issue Date FY: 2021 ( Subtotal = $535,084 )
2021	2021	WAYNE STATE UNIVERSITY	5057 WOODWARD STE 13001	DETROIT	MI	48202	WAYNE	USA	Environmental Health	003	4	9/25/2021	CHANGE OF GRANTEE / TRAINING INSTITUTION / AWARDING INSTITUTION	$392,512
2021	2021	WAYNE STATE UNIVERSITY	5057 WOODWARD STE 13001	DETROIT	MI	48202	WAYNE	USA	Environmental Health	001	4	9/3/2021	CHANGE OF GRANTEE / TRAINING INSTITUTION / AWARDING INSTITUTION	$535,084
2021	2020	UNIVERSITY OF MASSACHUSETTS	COMMONWEALTH AVE	AMHERST	MA	01003	HAMPSHIRE	USA	Environmental Health	002	3	9/25/2021	NON-COMPETING CONTINUATION	-$392,512
2021	2020	UNIVERSITY OF MASSACHUSETTS	COMMONWEALTH AVE	AMHERST	MA	01003	HAMPSHIRE	USA	Environmental Health	000	3	8/26/2021	NON-COMPETING CONTINUATION	$0
														Subtotal = $535,084

Issue Date FY: 2020 ( Subtotal = $530,736 )
2020	2020	UNIVERSITY OF MASSACHUSETTS	COMMONWEALTH AVE	AMHERST	MA	01003	HAMPSHIRE	USA	Environmental Health	000	3	5/20/2020	NON-COMPETING CONTINUATION	$530,736
														Subtotal = $530,736

Issue Date FY: 2019 ( Subtotal = $544,389 )
2019	2019	UNIVERSITY OF MASSACHUSETTS	COMMONWEALTH AVE	AMHERST	MA	01003	HAMPSHIRE	USA	Environmental Health	000	2	4/17/2019	NON-COMPETING CONTINUATION	$544,389
														Subtotal = $544,389

Issue Date FY: 2018 ( Subtotal = $584,224 )
2018	2018	UNIVERSITY OF MASSACHUSETTS	COMMONWEALTH AVE	AMHERST	MA	01003	HAMPSHIRE	USA	Environmental Health	000	1	8/8/2018	NEW	$584,224
														Subtotal = $584,224

Grand Total All Awards = $2,697,506

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Paternal preconception phthalates and reproductive health - potential mediation through sperm DNA methylation.

Award Number: R01ES028298

ORGANIZATION: NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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