{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T01:43:05Z","timestamp":1792633385971,"version":"4.5.0"},"reference-count":84,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2024,8,6]],"date-time":"2024-08-06T00:00:00Z","timestamp":1722902400000},"content-version":"vor","delay-in-days":218,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Gesualdo Family Foundation","award":["HD050121"],"award-info":[{"award-number":["HD050121"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2024,5,25]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>STUDY QUESTION<\/jats:title>\n                    <jats:p>Do the molecular signatures of cumulus cells (CCs) and follicular fluid (FF) of adolescents undergoing fertility preservation differ from that of oocyte donors?<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>SUMMARY ANSWER<\/jats:title>\n                    <jats:p>The microenvironment immediately surrounding the oocyte, including the CCs and FF, is altered in adolescents undergoing fertility preservation compared to oocyte donors.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>WHAT IS KNOWN ALREADY<\/jats:title>\n                    <jats:p>Adolescents experience a period of subfecundity following menarche. Recent evidence suggests that this may be at least partially due to increased oocyte aneuploidy. Reproductive juvenescence in mammals is associated with suboptimal oocyte quality.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>STUDY DESIGN, SIZE, DURATION<\/jats:title>\n                    <jats:p>This was a prospective cohort study. Adolescents (10\u201319\u2009years old, n\u2009=\u200923) and oocyte donors (22\u201330\u2009years old, n\u2009=\u200931) undergoing ovarian stimulation and oocyte retrieval at a single center between 1 November 2020 and 1 May 2023 were enrolled in this study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>PARTICIPANTS\/MATERIALS, SETTING, METHODS<\/jats:title>\n                    <jats:p>Patient demographics, ovarian stimulation, and oocyte retrieval outcomes were collected for all participants. The transcriptome of CCs associated with mature oocytes was compared between adolescents (10\u201319\u2009years old, n\u2009=\u200919) and oocyte donors (22\u201330\u2009years old, n\u2009=\u200919) using bulk RNA-sequencing. FF cytokine profiles (10\u201319\u2009years old, n\u2009=\u200918 vs 25\u201330\u2009years old, n\u2009=\u200916) were compared using cytokine arrays.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>MAIN RESULTS AND THE ROLE OF CHANCE<\/jats:title>\n                    <jats:p>RNA-seq analysis revealed 581 differentially expressed genes in CCs of adolescents relative to oocyte donors, with 361 genes downregulated and 220 upregulated. Genes enriched in pathways involved in cell cycle and cell division (e.g. GO: 1903047, P\u2009=\u20093.5\u2009\u00d7\u200910\u221243; GO: 0051983, P\u2009=\u20094.1\u2009\u00d7\u200910\u221230; GO: 0000281, P\u2009=\u20097.7\u2009\u00d7\u200910\u221215; GO: 0044839, P\u2009=\u20095.3\u2009\u00d7\u200910\u221213) were significantly downregulated, while genes enriched in several pathways involved in cellular and vesicle organization (e.g. GO: 0010256, P\u2009=\u20091.2\u2009\u00d7\u200910\u22128; GO: 0051129, P\u2009=\u20096.8\u2009\u00d7\u200910\u22127; GO: 0016050, P\u2009=\u20097.4\u2009\u00d7\u200910\u22127; GO: 0051640, P\u2009=\u20098.1\u2009\u00d7\u200910\u22127) were upregulated in CCs of adolescents compared to oocyte donors. The levels of nine cytokines were significantly increased in FF of adolescents compared to oocyte donors: IL-1 alpha (2-fold), IL-1 beta (1.7-fold), I-309 (2-fold), IL-15 (1.6-fold), TARC (1.9-fold), TPO (2.1-fold), IGFBP-4 (2-fold), IL-12-p40 (1.7-fold), and ENA-78 (1.4-fold). Interestingly, seven of these cytokines have known pro-inflammatory roles. Importantly, neither the CC transcriptomes nor FF cytokine profiles were different in adolescents with or without cancer.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>LARGE SCALE DATA<\/jats:title>\n                    <jats:p>Original high-throughput sequencing data have been deposited in Gene Expression Omnibus (GEO) database with the accession number GSE265995.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>LIMITATIONS, REASONS FOR CAUTION<\/jats:title>\n                    <jats:p>This study aims to gain insights into the associated gamete quality by studying the immediate oocyte microenvironment. The direct study of oocytes is more challenging due to sample scarcity, as they are cryopreserved for future use, but would provide a more accurate assessment of oocyte reproductive potential.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>WIDER IMPLICATIONS OF THE FINDINGS<\/jats:title>\n                    <jats:p>Our findings have implications for the adolescent fertility preservation cycles. Understanding the expected quality of cryopreserved eggs in this age group will lead to better counseling of these patients about their reproductive potential and may help to determine the number of eggs that is recommended to be banked to achieve a reasonable chance of future live birth(s).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>STUDY FUNDING\/COMPETING INTEREST(S)<\/jats:title>\n                    <jats:p>This project was supported by Friends of Prentice organization SP0061324 (M.M.L. and E.B.), Gesualdo Family Foundation (Research Scholar: M.M.L.), and NIH\/NICHD K12 HD050121 (E.B.). The authors have declared that no conflict of interest exists.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/hropen\/hoae047","type":"journal-article","created":{"date-parts":[[2024,8,2]],"date-time":"2024-08-02T17:31:13Z","timestamp":1722619873000},"source":"Crossref","is-referenced-by-count":5,"title":["The oocyte microenvironment is altered in adolescents compared to oocyte donors"],"prefix":"10.1093","volume":"2024","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9017-3260","authenticated-orcid":false,"given":"Dilan","family":"Gokyer","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University , Chicago, IL, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sophia","family":"Akinboro","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University , Chicago, IL, USA"},{"name":"Department of Neuroscience, Weinberg College of Arts and Sciences, Northwestern University , Evanston, IL, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4757-0652","authenticated-orcid":false,"given":"Luhan T","family":"Zhou","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University , Chicago, IL, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Kleinhans","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Northwestern Medicine Center for Fertility and Reproductive Medicine , Chicago, IL, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7840-4695","authenticated-orcid":false,"given":"Monica M","family":"Laronda","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University , Chicago, IL, USA"},{"name":"Department of Pediatrics, Feinberg School of Medicine, Northwestern University , Chicago, IL, USA"},{"name":"Basic and Preclinical Science, Stanley Manne Children\u2019s Research Institute, Ann & Robert H. 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