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Given the crucial role of mutant p53 in the context of metabolic reprogramming and aggressive tumor behavior, we explored its role on mitochondria, which may present a valuable therapeutic target. In this study, we characterized the unique mitochondrial proteome observed in PDAC cells harboring the gain\u2010of\u2010function\n                    <jats:italic>TP53<\/jats:italic>\n                    <jats:sup>R273H<\/jats:sup>\n                    mutation and discovered a strong mutant p53\u2010dependent upregulation of myosin heavy chain 14 (MYH14), a nonmuscle myosin, implicated in mitochondrial dynamics. We deeply investigated the role of mutant p53 in the regulation of mitochondrial architecture and functionality in PDAC cells. Our morphological and morphometric analyses with transmission electron microscopy and three\u2010dimensional confocal imaging revealed that mutant p53 induced marked mitochondrial fragmentation, whereas wild\u2010type p53 stimulated mitochondrial elongation. Interestingly, the fragmented mitochondrial morphology is associated with higher mitochondrial respiration levels and more efficient mitochondrial cristae. These findings support the role of oncogenic mutant p53 isoforms in inducing mitochondrial fragmentation through a mechanism involving MYH14, resulting in an increased oxidative phosphorylation level that may support PDAC cell growth and aggressiveness.\n                  <\/jats:p>","DOI":"10.1111\/febs.70223","type":"journal-article","created":{"date-parts":[[2025,8,17]],"date-time":"2025-08-17T07:34:21Z","timestamp":1755416061000},"page":"156-174","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Mutant p53 affects the mitochondrial proteome, promoting mitochondrial fragmentation and\n                    <scp>OXPHOS<\/scp>\n                    in pancreatic ductal adenocarcinoma cells"],"prefix":"10.1111","volume":"293","author":[{"given":"Maria","family":"Poles","sequence":"first","affiliation":[{"name":"Department of Neurosciences, Biomedicine and Movement Sciences, Section of Biochemistry University of Verona  Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Raffaella","family":"Pacchiana","sequence":"additional","affiliation":[{"name":"Department of Neurosciences, Biomedicine and Movement Sciences, Section of Biochemistry University of Verona  Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chiara","family":"Mortali","sequence":"additional","affiliation":[{"name":"Division of General Pathology, Cystic Fibrosis Laboratory D. 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