{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,11]],"date-time":"2026-09-11T08:31:38Z","timestamp":1789115498786,"version":"build-2803163510"},"reference-count":83,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T00:00:00Z","timestamp":1769472000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Citrus reticulata Blanco peel is a dominant industrial waste that was recently revalued as a source of bioactive molecules. This study explored its phytochemical and antileukemic potentials. The bioassay-guided fractionation of the dichloromethane extract yielded nobiletin, scoparone, and tangeretin, which were identified spectroscopically. The extract, fractions, and compounds showed antiproliferative effects in both THP-1 and U937 cells, which were employed as in vitro models of acute myeloid leukemia (AML). According to cytofluorimetric analysis, the extract and fractions inhibited cell growth by both apoptosis and necrosis, whereas the single molecules induced apoptosis. This mechanism was mediated by the modulation of BAX and BCL-2 genes in both AML cell lines. Notably, each treatment drove THP-1 and U937 cells into the sub-G0 phase, together with an increase in the cell population in the G1 phase of the cell cycle, both of which were detected cytofluorimetrically. In line with these findings, the extract, fractions, and single molecules counteracted the overexpression of CYCLIN A1 in THP-1 cells while reducing the expression of CYCLIN D2 in U937 cells. Moreover, cell treatments attenuated the invasiveness of AML cells through the upregulation of TIMP-2 at the transcriptional level. Therefore, this study supports pharmaceutical interest in citrus waste for cancer management, providing evidence on its antileukemic potential in vitro.<\/jats:p>","DOI":"10.3390\/ijms27031256","type":"journal-article","created":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T10:27:11Z","timestamp":1769509631000},"page":"1256","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Mechanisms of Antiproliferative Effects of Nobiletin, Scoparone, and Tangeretin Isolated from Citrus reticulata Peel Dichloromethane Extract in Acute Myeloid Leukemia Cells"],"prefix":"10.3390","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7770-0457","authenticated-orcid":false,"given":"Caterina","family":"Russo","sequence":"first","affiliation":[{"name":"Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d\u2019Alcontres 31, 98166 Messina, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1157-2405","authenticated-orcid":false,"given":"Lutfun","family":"Nahar","sequence":"additional","affiliation":[{"name":"Centre for Natural Products Discovery (CNPD), School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, James Parsons Building, Byrom Street, Liverpool L3 3AF, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fyaz M. D.","family":"Ismail","sequence":"additional","affiliation":[{"name":"Centre for Natural Products Discovery (CNPD), School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, James Parsons Building, Byrom Street, Liverpool L3 3AF, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6492-7820","authenticated-orcid":false,"given":"Michele","family":"Navarra","sequence":"additional","affiliation":[{"name":"Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d\u2019Alcontres 31, 98166 Messina, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4038-0514","authenticated-orcid":false,"given":"Satyajit D.","family":"Sarker","sequence":"additional","affiliation":[{"name":"Centre for Natural Products Discovery (CNPD), School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, James Parsons Building, Byrom Street, Liverpool L3 3AF, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,1,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"502","DOI":"10.1663\/0013-0001(2003)057[0502:TIOCCT]2.0.CO;2","article-title":"The introduction of cultivated citrus to Europe via Northern Africa and the Iberian Peninsula","volume":"57","year":"2003","journal-title":"Econ. Bot."},{"key":"ref_2","unstructured":"Food and Agricolture Organization of the United Nations (FAO) (2021). 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