{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"institution":[{"name":"bioRxiv"}],"indexed":{"date-parts":[[2026,1,15]],"date-time":"2026-01-15T21:08:43Z","timestamp":1768511323794,"version":"3.49.0"},"posted":{"date-parts":[[2024,4,16]]},"group-title":"Molecular Biology","reference-count":80,"publisher":"openRxiv","license":[{"start":{"date-parts":[[2024,4,16]],"date-time":"2024-04-16T00:00:00Z","timestamp":1713225600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"accepted":{"date-parts":[[2024,8,29]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                <jats:p>Estradiol (E2) and relaxin (Rln) are steroid and polypeptide hormones, respectively, with important roles in the female reproductive tract, including myometrium. Some actions of Rln, which are mediated by its membrane receptor RXFP1, require or are augmented by E2 signaling through its cognate nuclear steroid receptor, estrogen receptor alpha (ER\u03b1). In contrast, other actions of Rln act in opposition to the effects of E2. Here we explored the molecular and genomic mechanisms that underlie the functional interplay between E2 and Rln in the myometrium. We used both ovariectomized female mice and immortalized human myometrial cells expressing wild-type or mutant ER\u03b1 (hTERT-HM-ER\u03b1 cells). Our results indicate that Rln modulates the genomic actions and biological effects of estrogen in the myometrium and myometrial cells by reducing phosphorylation of ER\u03b1 on serine 118 (S118), as well as by reducing the E2-dependent binding of ER\u03b1 across the genome. These effects were associated with changes in the hormone-regulated transcriptome, including a decrease in the E2-dependent expression of some genes and enhanced expression of others. The inhibitory effects of Rln cotreatment on the E2-dependent phosphorylation of ER\u03b1 required the nuclear dual-specificity phosphatases DUSP1 and DUSP5. Moreover, the inhibitory effects of Rln were reflected in a concomitant inhibition of the E2-dependent contraction of myometrial cells. Collectively, our results identify a pathway that integrates Rln\/RXFP1 and E2\/ER\u03b1 signaling, resulting in a convergence of membrane and nuclear signaling pathways to control genomic and biological outcomes.<\/jats:p>","DOI":"10.1101\/2024.04.15.589654","type":"posted-content","created":{"date-parts":[[2024,4,17]],"date-time":"2024-04-17T01:35:22Z","timestamp":1713317722000},"source":"Crossref","is-referenced-by-count":1,"title":["Relaxin Modulates the Genomic Actions and Biological Effects of Estrogen in the Myometrium"],"prefix":"10.64898","author":[{"given":"Sudeshna","family":"Tripathy","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anusha","family":"Nagari","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shu-Ping","family":"Chiu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tulip","family":"Nandu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cristel V.","family":"Camacho","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mala","family":"Mahendroo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8786-2986","authenticated-orcid":false,"given":"W.","family":"Lee Kraus","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"54368","reference":[{"issue":"1","key":"2024090122451297000_2024.04.15.589654v2.1","doi-asserted-by":"crossref","first-page":"50","DOI":"10.4103\/2230-8210.107841","article-title":"Endocrinology of parturition","volume":"17","year":"2013","journal-title":"Indian J Endocrinol Metab"},{"key":"2024090122451297000_2024.04.15.589654v2.2","doi-asserted-by":"crossref","unstructured":"Renthal NE , Williams KC , Montalbano AP , Chen CC , Gao L , Mendelson CR . Molecular regulation of parturition: A myometrial perspective. Cold Spring Harb Perspect Med. 2015;5(11).","DOI":"10.1101\/cshperspect.a023069"},{"key":"2024090122451297000_2024.04.15.589654v2.3","doi-asserted-by":"publisher","DOI":"10.2174\/1381612043383926"},{"key":"2024090122451297000_2024.04.15.589654v2.4","doi-asserted-by":"crossref","unstructured":"Mesiano S , DeFranco E , Muglia LJ. Parturition. In: Plant TM , Zeleznik AJ , eds. Knobil and Neill\u2019s Physiology of Reproduction. Vol Vol. 2. 4th ed. 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Abnormal extracellular matrix remodelling in the cervix of pregnant relaxin-deficient mice is not associated with reduced matrix metalloproteinase expression or activity. Reprod Fertil Dev. 2018.","DOI":"10.1071\/RD17544"},{"key":"2024090122451297000_2024.04.15.589654v2.20","doi-asserted-by":"crossref","unstructured":"Valkovic AL , Bathgate RA , Samuel CS , Kocan M . Understanding relaxin signalling at the cellular level. 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