PMID- 34321782 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220304 IS - 2455-1244 (Electronic) IS - 0971-913X (Print) IS - 0971-913X (Linking) VI - 21 IP - 1 DP - 2017 Jun TI - Membrane estrogen receptor 1 is required for normal reproduction in male and female mice. PG - 1-14 AB - Steroid hormones, acting through their cognate nuclear receptors, are critical for many reproductive and non-reproductive functions. Over the past two decades, it has become increasingly clear that in addition to cytoplasmic/nuclear steroid receptors that alter gene transcription when liganded, a small fraction of cellular steroid receptors are localized to the cell membranes, where they mediate rapid steroid hormone effects. 17beta-Estradiol (E2), a key steroid hormone for both male and female reproduction, acts predominately through its main receptor, estrogen receptor 1 (ESR1). Most ESR1 is nuclear; however, 5-10% of ESR1 is localized to the cell membrane after being palmitoylated at cysteine 451 in mice. This review discusses reproductive phenotypes of a newly-developed mouse model with a C451A point mutation that precludes membrane targeting of ESR1. This transgenic mouse, termed the nuclear-only ESR1 (NOER) mouse, shows extensive male and female reproductive abnormalities and infertility despite normally functional nuclear ESR1 (nESR1). These results provide the first in vivo evidence that membrane-initiated E2/ESR1 signaling is required for normal male and female reproductive functions and fertility. Signaling mechanisms for membrane ESR1 (mESR1), as well as how mESR1 works with nESR1 to mediate estrogen effects, are still being established. We discuss some possible mechanisms by which mESR1 might facilitate nESR1 signaling, as well as the emerging evidence that mESR1 might be a major mediator of epigenetic effects of estrogens, which are potentially linked to various adult-onset pathologies. FAU - Nanjappa, Manjunatha K AU - Nanjappa MK AD - Department of Physiological Sciences, University of Florida, Gainesville, FL 32610, USA. FAU - Mesa, Ana M AU - Mesa AM AD - Department of Physiological Sciences, University of Florida, Gainesville, FL 32610, USA. FAU - Tevosian, Sergei G AU - Tevosian SG AD - Department of Physiological Sciences, University of Florida, Gainesville, FL 32610, USA. FAU - de Armas, Laura AU - de Armas L AD - Department of Physiological Sciences, University of Florida, Gainesville, FL 32610, USA. FAU - Hess, Rex A AU - Hess RA AD - Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA. FAU - Bagchi, Indrani C AU - Bagchi IC AD - Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA. FAU - Cooke, Paul S AU - Cooke PS AD - Department of Physiological Sciences, University of Florida, Gainesville, FL 32610, USA. LA - eng GR - R01 DK117633/DK/NIDDK NIH HHS/United States GR - R03 HD087528/HD/NICHD NIH HHS/United States GR - R21 HD088006/HD/NICHD NIH HHS/United States PT - Journal Article PL - India TA - J Endocrinol Reprod JT - Journal of endocrinology and reproduction : JER JID - 9713097 PMC - PMC8315114 MID - NIHMS1652643 OTO - NOTNLM OT - 17beta-Estradiol OT - Efferent Ductules OT - Spermatogenesis OT - Testis OT - Uterus EDAT- 2017/06/01 00:00 MHDA- 2017/06/01 00:01 PMCR- 2021/07/27 CRDT- 2021/07/29 06:45 PHST- 2021/07/29 06:45 [entrez] PHST- 2017/06/01 00:00 [pubmed] PHST- 2017/06/01 00:01 [medline] PHST- 2021/07/27 00:00 [pmc-release] PST - ppublish SO - J Endocrinol Reprod. 2017 Jun;21(1):1-14.