{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T16:15:45Z","timestamp":1781540145226,"version":"3.54.5"},"reference-count":34,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2024,3,9]],"date-time":"2024-03-09T00:00:00Z","timestamp":1709942400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Atrium Health research fund"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Our goal was to investigate the effects of epidermal growth factor (EGF) and interferons (IFNs) on signal transducer and activator of transcription STAT1 and STAT4 mRNA and active phosphorylated protein expression in Sj\u00f6gren\u2019s syndrome cell culture models. iSGECs (immortalized salivary gland epithelial cells) and A253 cells were treated with EGF, IFN-alpha, -beta, -gamma, or mitogen-activated protein kinase p38 alpha (p38-MAPK) inhibitor for 0\u201324\u201348\u201372 h. STAT1 and STAT4 mRNA expression was quantified by qRT-PCR. Untreated and treated cells were compared using the delta-delta-CT method based on glyceraldehyde-3-phosphate dehydrogenase (GAPDH) normalized relative fold changes. phospho-tyrosine-701-STAT1 and phospho-serine-721-STAT4 were detected by Western blot analysis. STAT4 mRNA expression decreased 48 h after EGF treatment in A253 cells, immortalized salivary gland epithelial cells iSGECs nSS2 (sicca patient origin), and iSGECs pSS1 (anti-SSA negative Sj\u00f6gren\u2019s Syndrome patient origin). EGF and p38-MAPK inhibitor decreased A253 STAT4 mRNA levels. EGF combined with IFN-gamma increased phospho-STAT4 and phospho-STAT1 after 72 h in all cell lines, suggesting additive effects for phospho-STAT4 and a major effect from IFN-gamma for phospho-STAT1. pSS1 and nSS2 cells responded differently to type I and type II interferons, confirming unique functional characteristics between iSGEC cell lines. EGF\/Interferon related pathways might be targeted to regulate STAT1 and STAT4 expression in salivary gland epithelial cells. Further investigation is required learn how to better target the Janus kinases\/signal transducer and activator of transcription proteins (JAK\/STAT) pathway-mediated inflammatory response in Sj\u00f6gren\u2019s syndrome.<\/jats:p>","DOI":"10.3390\/ijms25063166","type":"journal-article","created":{"date-parts":[[2024,3,11]],"date-time":"2024-03-11T06:05:30Z","timestamp":1710137130000},"page":"3166","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Regulation of STAT1 and STAT4 Expression by Growth Factor and Interferon Supplementation in Sj\u00f6gren\u2019s Syndrome Cell Culture Models"],"prefix":"10.3390","volume":"25","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8953-1769","authenticated-orcid":false,"given":"Jean-Luc C.","family":"Mougeot","sequence":"first","affiliation":[{"name":"Translational Research Laboratories, Oral Medicine, Oral & Maxillofacial Surgery, Atrium Health-Carolinas Medical Center, Charlotte, NC 28203, USA"},{"name":"Department of Otolaryngology, Head & Neck Surgery, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas E.","family":"Thornburg","sequence":"additional","affiliation":[{"name":"Translational Research Laboratories, Oral Medicine, Oral & Maxillofacial Surgery, Atrium Health-Carolinas Medical Center, Charlotte, NC 28203, USA"},{"name":"Department of Otolaryngology, Head & Neck Surgery, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Braxton D.","family":"Noll","sequence":"additional","affiliation":[{"name":"Translational Research Laboratories, Oral Medicine, Oral & Maxillofacial Surgery, Atrium Health-Carolinas Medical Center, Charlotte, NC 28203, USA"},{"name":"Department of Otolaryngology, Head & Neck Surgery, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael T.","family":"Brennan","sequence":"additional","affiliation":[{"name":"Translational Research Laboratories, Oral Medicine, Oral & Maxillofacial Surgery, Atrium Health-Carolinas Medical Center, Charlotte, NC 28203, USA"},{"name":"Department of Otolaryngology, Head & Neck Surgery, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Farah Bahrani","family":"Mougeot","sequence":"additional","affiliation":[{"name":"Translational Research Laboratories, Oral Medicine, Oral & Maxillofacial Surgery, Atrium Health-Carolinas Medical Center, Charlotte, NC 28203, USA"},{"name":"Department of Otolaryngology, Head & Neck Surgery, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,3,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Parisis, D., Chivasso, C., Perret, J., Soyfoo, M.S., and Delporte, C. 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