{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T00:39:47Z","timestamp":1792543187946,"version":"4.5.0"},"reference-count":86,"publisher":"The Royal Society","issue":"2081","license":[{"start":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T00:00:00Z","timestamp":1792540800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002341","name":"Research Council of Finland","doi-asserted-by":"publisher","award":["314105"],"award-info":[{"award-number":["314105"]}],"id":[{"id":"10.13039\/501100002341","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002341","name":"Research Council of Finland","doi-asserted-by":"publisher","award":["308485"],"award-info":[{"award-number":["308485"]}],"id":[{"id":"10.13039\/501100002341","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100010114","name":"Yrj\u00f6 Jahnsson foundation","doi-asserted-by":"publisher","award":["20217467"],"award-info":[{"award-number":["20217467"]}],"id":[{"id":"10.13039\/100010114","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100006306","name":"Sigrid Jus\u00e9lius Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100006306","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003502","name":"Ella and Georg Ehrnrooth Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003502","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,10,21]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Mature sperm are widely considered as transcriptionally inactive cells owing to the tight compaction of their chromatin with protamine. However, sperm cells have been demonstrated to retain RNA polymerase subunits, chromatin remodellers, transcription factors, and parts of their chromatin remain in a less condensed, nucleosome-bound configuration. Consequently, some studies have suggested that sperm may be transcriptionally more active than previously assumed. Here, we tested this possibility by exposing mature human sperm to follicular fluid (FF), a bioactive liquid surrounding the oocyte. Using RNA sequencing, we first observed that FF exposure alters the sperm transcriptome. To resolve whether the observed upregulation of selected candidate genes resulted from the transcriptional activation of these genes in sperm, we labelled newly synthesized RNAs with 5-ethynyl uridine. Our results suggest that FF may trigger de novo transcription of sperm CXCL8 and CXCL3 genes and indicate that some follicular-fluid-derived transcripts are selectively transferred into sperm. Collectively, these findings suggest that specific sperm genes may become transcriptionally active in the presence of biologically relevant stimuli, potentially preparing sperm for fertilization and early embryo development. Furthermore, we envisage that activated sperm genes can have novel implications for the deeper mechanistic understanding of sexual selection.<\/jats:p>","DOI":"10.1098\/rspb.2025.3286","type":"journal-article","created":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T00:17:34Z","timestamp":1792541854000},"source":"Crossref","is-referenced-by-count":0,"title":["Transcriptional activation of the\n                    <i>CXCL<\/i>\n                    gene family locus in mature human sperm in the presence of female-derived reproductive fluid"],"prefix":"10.1098","volume":"293","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8688-2611","authenticated-orcid":false,"given":"Tanja","family":"Turunen","sequence":"first","affiliation":[{"name":"Department of Environmental and Biological Sciences, University of Eastern Finland, 1 Joensuu, Finland"},{"name":"Department of Physiology and Pharmacology, Karolinska Institutet 2 , Stockholm, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marjo","family":"Malinen","sequence":"additional","affiliation":[{"name":"Department of Environmental and Biological Sciences, University of Eastern Finland, 1 Joensuu, Finland"},{"name":"Department of Forestry, Food Technology, and Environmental Technology, South-Eastern Finland University of Applied Sciences 3 , Kouvola, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6083-2402","authenticated-orcid":false,"given":"Sami","family":"Heikkinen","sequence":"additional","affiliation":[{"name":"Institute of Biomedicine, University of Eastern Finland, 4 Kuopio, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Merja","family":"Hein\u00e4niemi","sequence":"additional","affiliation":[{"name":"Institute of Biomedicine, University of Eastern Finland, 4 Kuopio, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephen A.","family":"Krawetz","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Center for Molecular Medicine and Genetics, C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine 5 , Detroit, MI, USA"},{"name":"Center for Molecular Medicine and Genetics, Wayne State University School of Medicine 6 , Detroit, MI, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6534-7940","authenticated-orcid":false,"given":"Grace M.","family":"Swanson","sequence":"additional","affiliation":[{"name":"Center for Molecular Medicine and Genetics, Wayne State University School of Medicine 6 , Detroit, MI, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Enni","family":"Linnavirta","sequence":"additional","affiliation":[{"name":"Department of Environmental and Biological Sciences, University of Eastern Finland, 1 Joensuu, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pia","family":"Allinen","sequence":"additional","affiliation":[{"name":"Ovumia Kuopio 7 , Kuopio, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liisa","family":"Kuusipalo","sequence":"additional","affiliation":[{"name":"North Karelia Central Hospital 8 , Joensuu, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6303-6797","authenticated-orcid":false,"given":"Jukka","family":"Kek\u00e4l\u00e4inen","sequence":"additional","affiliation":[{"name":"Department of Environmental and Biological Sciences, University of Eastern Finland, 1 Joensuu, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"175","published-online":{"date-parts":[[2026,10,21]]},"reference":[{"key":"2026102020172381200_RSPB20253286C1","doi-asserted-by":"crossref","first-page":"69","DOI":"10.1111\/j.1439-0272.2005.00656.x","article-title":"Mature human spermatozoa do not transcribe novel RNA","volume":"37","author":"Grunewald","year":"2005","journal-title":"Andrologia"},{"key":"2026102020172381200_RSPB20253286C2","doi-asserted-by":"crossref","first-page":"8755","DOI":"10.1074\/jbc.270.15.8755","article-title":"A haploid expressed gene cluster exists as a single chromatin domain in human sperm","volume":"270","author":"Choudhary","year":"1995","journal-title":"J. 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