{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T06:13:41Z","timestamp":1790662421966,"version":"4.1.0"},"reference-count":48,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2021,7,23]],"date-time":"2021-07-23T00:00:00Z","timestamp":1626998400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100009687","name":"Uniwersytet Medyczny im. Piast\u00f3w Slaskich we Wroclawiu","doi-asserted-by":"publisher","award":["SUB.A040.19.016."],"award-info":[{"award-number":["SUB.A040.19.016."]}],"id":[{"id":"10.13039\/501100009687","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biomolecules"],"abstract":"<jats:p>There is a pressing need for molecular targets and biomarkers in gastric cancer (GC). We aimed at identifying aberrations in L-arginine metabolism with therapeutic and diagnostic potential. Systemic metabolites were quantified using mass spectrometry in 293 individuals and enzymes\u2019 gene expression was quantified in 29 paired tumor-normal samples using qPCR and referred to cancer pathology and molecular landscape. Patients with cancer or benign disorders had reduced systemic arginine, citrulline, and ornithine and elevated symmetric dimethylarginine and dimethylamine. Citrulline and ornithine depletion was accentuated in metastasizing cancers. Metabolite diagnostic panel had 91% accuracy in detecting cancer and 70% accuracy in differentiating cancer from benign disorders. Gastric tumors had upregulated NOS2 and downregulated ASL, PRMT2, ORNT1, and DDAH1 expression. NOS2 upregulation was less and ASL downregulation was more pronounced in metastatic cancers. Tumor ASL and PRMT2 expression was inversely related to local advancement. Enzyme up- or downregulation was greater or significant solely in cardia subtype. Metabolic reprogramming in GC includes aberrant L-arginine metabolism, reflecting GC subtype and pathology, and is manifested by altered interplay of its intermediates and enzymes. Exploiting L-arginine metabolic pathways for diagnostic and therapeutic purposes is warranted. Functional studies on ASL, PRMT2, and ORNT1 in GC are needed.<\/jats:p>","DOI":"10.3390\/biom11081086","type":"journal-article","created":{"date-parts":[[2021,7,23]],"date-time":"2021-07-23T04:29:14Z","timestamp":1627014554000},"page":"1086","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":38,"title":["Altered L-Arginine Metabolic Pathways in Gastric Cancer: Potential Therapeutic Targets and Biomarkers"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7244-2017","authenticated-orcid":false,"given":"Iwona","family":"Bednarz-Misa","sequence":"first","affiliation":[{"name":"Department of Biochemistry and Immunochemistry, Wroclaw Medical University, 50-368 Wroclaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7857-327X","authenticated-orcid":false,"given":"Mariusz G.","family":"Fleszar","sequence":"additional","affiliation":[{"name":"Department of Biochemistry and Immunochemistry, Wroclaw Medical University, 50-368 Wroclaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4617-798X","authenticated-orcid":false,"given":"Paulina","family":"Fortuna","sequence":"additional","affiliation":[{"name":"Department of Biochemistry and Immunochemistry, Wroclaw Medical University, 50-368 Wroclaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7624-631X","authenticated-orcid":false,"given":"\u0141ukasz","family":"Lewandowski","sequence":"additional","affiliation":[{"name":"Department of Biochemistry and Immunochemistry, Wroclaw Medical University, 50-368 Wroclaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9640-4883","authenticated-orcid":false,"given":"Magdalena","family":"Mierzcha\u0142a-Pasierb","sequence":"additional","affiliation":[{"name":"Department of Biochemistry and Immunochemistry, Wroclaw Medical University, 50-368 Wroclaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1377-5601","authenticated-orcid":false,"given":"Dorota","family":"Diakowska","sequence":"additional","affiliation":[{"name":"Department of Gastrointestinal and General Surgery, Wroclaw Medical University, 50-368 Wroclaw, Poland"},{"name":"Department of Nervous System Diseases, Wroclaw Medical University, 51-618 Wroclaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2753-8092","authenticated-orcid":false,"given":"Ma\u0142gorzata","family":"Krzystek-Korpacka","sequence":"additional","affiliation":[{"name":"Department of Biochemistry and Immunochemistry, Wroclaw Medical University, 50-368 Wroclaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,7,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"239","DOI":"10.2147\/CMAR.S149619","article-title":"Gastric cancer: Epidemiology, prevention, classification, and treatment","volume":"10","author":"Sitarz","year":"2018","journal-title":"Cancer Manag. 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