{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:06:23Z","timestamp":1760148383785,"version":"build-2065373602"},"reference-count":75,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2023,4,27]],"date-time":"2023-04-27T00:00:00Z","timestamp":1682553600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Laboratory on Human Reproduction","award":["RRF-2.3.1-21-2022-00012"],"award-info":[{"award-number":["RRF-2.3.1-21-2022-00012"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Fractalkine (CX3CL1\/FKN) is a unique chemokine belonging to the CX3C chemokine subclass. FKN exists in two forms: a membrane-bound form expressed by both endometrium cells and trophoblasts thought to be implicated in maternal\u2013fetal interaction and a soluble form expressed by endometrium cells. Endometrium receptivity is crucial in embryo implantation and a complex process regulated by large numbers of proteins, e.g., cytokines, progesterone receptor (PR), SOX-17, prostaglandin receptors (PTGER2), and tissue inhibitors of metalloproteinases (TIMPs). It has also been reported that iron is important in fertility and affects the iron status of the mother. Therefore, iron availability in the embryo contributes to fertilization and pregnancy. In this study, we focused on the effect of iron deficiency on the secreted cytokines (IL-6, IL-1\u03b2, leukocyte inhibitory factor, TGF-\u03b2), chemokines (IL-8, FKN), and other regulatory proteins (bone morphogenic protein 2, activin, follistatin, PR, SOX-17, prostaglandin E2 receptor, TIMP2), and the modifying effect of FKN on the expression of these proteins, which may improve endometrium receptivity. Endometrial iron deficiency was mediated by desferrioxamine (DFO) treatment of HEC-1A cells. FKN was added to the cells 24 h and 48 h after DFO with or without serum for modelling the possible iron dependence of the alterations. Our findings support the hypothesis that FKN ameliorates the effects of anemia on the receptivity-related genes and proteins in HEC-1A cells by increasing the secretion of the receptivity-related cytokines via the fractalkine receptor (CX3CR1). FKN may contribute to cell proliferation and differentiation by regulating activin, follistatin, and BMP2 expressions, and to implantation by altering the protein levels of PR, SOX-17, PTGER2, and TIMP2. FKN mitigates the negative effect of iron deficiency on the receptivity-related genes and proteins of HEC-1A endometrium cells, suggesting its important role in the regulation of endometrium receptivity.<\/jats:p>","DOI":"10.3390\/ijms24097924","type":"journal-article","created":{"date-parts":[[2023,4,27]],"date-time":"2023-04-27T02:50:00Z","timestamp":1682563800000},"page":"7924","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Fractalkine Improves the Expression of Endometrium Receptivity-Related Genes and Proteins at Desferrioxamine-Induced Iron Deficiency in HEC-1A Cells"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5012-3242","authenticated-orcid":false,"given":"Edina","family":"Pandur","sequence":"first","affiliation":[{"name":"Department of Pharmaceutical Biology, Faculty of Pharmacy, University of P\u00e9cs, H-7624 P\u00e9cs, Hungary"},{"name":"National Laboratory on Human Reproduction, University of P\u00e9cs, H-7624 P\u00e9cs, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3340-0102","authenticated-orcid":false,"given":"Ram\u00f3na","family":"Pap","sequence":"additional","affiliation":[{"name":"Department of Pharmaceutical Biology, Faculty of Pharmacy, University of P\u00e9cs, H-7624 P\u00e9cs, Hungary"},{"name":"National Laboratory on Human Reproduction, University of P\u00e9cs, H-7624 P\u00e9cs, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gergely","family":"J\u00e1nosa","sequence":"additional","affiliation":[{"name":"Department of Pharmaceutical Biology, Faculty of Pharmacy, University of P\u00e9cs, H-7624 P\u00e9cs, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Adrienn","family":"Horv\u00e1th","sequence":"additional","affiliation":[{"name":"Department of Pharmaceutical Biology, Faculty of Pharmacy, University of P\u00e9cs, H-7624 P\u00e9cs, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6706-2682","authenticated-orcid":false,"given":"Katalin","family":"Sipos","sequence":"additional","affiliation":[{"name":"Department of Pharmaceutical Biology, Faculty of Pharmacy, University of P\u00e9cs, H-7624 P\u00e9cs, Hungary"},{"name":"National Laboratory on Human Reproduction, University of P\u00e9cs, H-7624 P\u00e9cs, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,27]]},"reference":[{"key":"ref_1","first-page":"189","article-title":"Implantation and Establishment of Pregnancy in Human and Nonhuman Primates","volume":"Volume 216","author":"Geisert","year":"2015","journal-title":"Regulation of Implantation and Establishment of Pregnancy in Mammals. 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