{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T05:39:34Z","timestamp":1765345174126,"version":"3.46.0"},"reference-count":63,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2025,12,8]],"date-time":"2025-12-08T00:00:00Z","timestamp":1765152000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000005","name":"United States Department of Defense","doi-asserted-by":"publisher","award":["W81XWH-20-1-0789"],"award-info":[{"award-number":["W81XWH-20-1-0789"]}],"id":[{"id":"10.13039\/100000005","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cells"],"abstract":"<jats:p>No pharmacological interventions exist that can restore or preserve auditory function in the mammalian cochlea. Auditory hair cells (HCs) do not spontaneously regenerate, leading to permanent hearing loss. In non-mammalian vertebrates, HC regeneration happens through proliferation and differentiation of their clonally related supporting cells (SCs). The present study supports the potential of quinoxaline (Qx), a nonsteroidal anti-inflammatory compound, to stimulate SC proliferation in the auditory sensory epithelium, a process that may prime the tissue for future HC regeneration. We synthesized a series of Qx derivatives by introducing various substitutions, ranging from hydrophilic to lipophilic. Seventy analogs were generated and tested in vitro and in vivo. Among those, only one (Qx-100) exhibited the best medicinal chemistry profile and was further modified to expand the structure\u2013activity relationship of the chemotype, develop additional analogs, and optimize potency, bioavailability, and in vivo efficacy. Ten new lead variants were generated. Of those, Qx-294 and Qx-301 demonstrated promising in vitro Absorption, Distribution, Metabolism, and Excretion (ADME) profiles and were selected for further testing. Overall, both compounds were rapidly absorbed in zebrafish and mice and promoted cell proliferation in vitro and in vivo without signs of apoptosis, supporting their potential for sensory HC regeneration.<\/jats:p>","DOI":"10.3390\/cells14241946","type":"journal-article","created":{"date-parts":[[2025,12,8]],"date-time":"2025-12-08T14:52:24Z","timestamp":1765205544000},"page":"1946","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Design and Synthesis of New Quinoxaline Analogs to Regenerate Sensory Auditory Hair Cells"],"prefix":"10.3390","volume":"14","author":[{"given":"Sonia M.","family":"Rocha-Sanchez","sequence":"first","affiliation":[{"name":"Department of Oral Biology, School of Dentistry, Creighton University, Omaha, NE 68178, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elton Jeffrey","family":"North","sequence":"additional","affiliation":[{"name":"Department of Pharmacy Sciences, School of Pharmacy and Health Professions, Creighton University, Omaha, NE 68178, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lilian E.","family":"Calisto","sequence":"additional","affiliation":[{"name":"Department of Oral Biology, School of Dentistry, Creighton University, Omaha, NE 68178, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brock M.","family":"Barthol","sequence":"additional","affiliation":[{"name":"Department of Oral Biology, School of Dentistry, Creighton University, Omaha, NE 68178, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kenneth D.","family":"Nguyen","sequence":"additional","affiliation":[{"name":"Department of Oral Biology, School of Dentistry, Creighton University, Omaha, NE 68178, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jigar P.","family":"Sethiya","sequence":"additional","affiliation":[{"name":"Department of Pharmacy Sciences, School of Pharmacy and Health Professions, Creighton University, Omaha, NE 68178, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,12,8]]},"reference":[{"key":"ref_1","unstructured":"World Health Organization (2021). 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