{"id":31765,"date":"2025-07-29T02:49:27","date_gmt":"2025-07-29T06:49:27","guid":{"rendered":"https:\/\/www.med.unc.edu\/biochem\/?p=31765"},"modified":"2025-09-19T15:39:18","modified_gmt":"2025-09-19T19:39:18","slug":"congratulations-to-our-new-phd-dr-dalia-fleifel","status":"publish","type":"post","link":"https:\/\/www.med.unc.edu\/biochem\/news\/congratulations-to-our-new-phd-dr-dalia-fleifel\/","title":{"rendered":"Congratulations to our new PhD, Dr. Dalia Fleifel!"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-31766 alignright\" src=\"https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/thumbnail_Dalia-at-her-defense-300x286.jpg\" alt=\"Dalia by defense slide in 2025\" width=\"300\" height=\"286\" srcset=\"https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/thumbnail_Dalia-at-her-defense-300x286.jpg 300w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/thumbnail_Dalia-at-her-defense-1024x977.jpg 1024w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/thumbnail_Dalia-at-her-defense-768x733.jpg 768w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/thumbnail_Dalia-at-her-defense-1536x1466.jpg 1536w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/thumbnail_Dalia-at-her-defense-600x573.jpg 600w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/thumbnail_Dalia-at-her-defense-560x534.jpg 560w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/thumbnail_Dalia-at-her-defense.jpg 1920w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p><strong>Congratulations to our new PhD, Dr. Dalia Fleifel!<\/strong><\/p>\n<p>Dr. Dalia Fleifel successfully defended her thesis, titled \u201cDNA replication keynote and code: MCM\u2019s journey on and off\u201d on July 7, 2025. As a graduate student, Dalia was an active member of the <a href=\"https:\/\/sites.google.com\/site\/cooklabgroup\/home\">Jean Cook lab<\/a> and a student leader within the Biochemistry and Biophysics department.<\/p>\n<hr \/>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-31823 alignleft\" src=\"https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-with-Jean-after-being-pseudo-hooded-at-the-post-defense-celebration-211x300.jpg\" alt=\"Dalia wearing graduation clothes with her advisor Dr Jean Cook after being pseudo-hooded at the post defense celebration.\" width=\"211\" height=\"300\" srcset=\"https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-with-Jean-after-being-pseudo-hooded-at-the-post-defense-celebration-211x300.jpg 211w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-with-Jean-after-being-pseudo-hooded-at-the-post-defense-celebration-721x1024.jpg 721w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-with-Jean-after-being-pseudo-hooded-at-the-post-defense-celebration-768x1091.jpg 768w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-with-Jean-after-being-pseudo-hooded-at-the-post-defense-celebration-1081x1536.jpg 1081w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-with-Jean-after-being-pseudo-hooded-at-the-post-defense-celebration-1441x2048.jpg 1441w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-with-Jean-after-being-pseudo-hooded-at-the-post-defense-celebration-600x853.jpg 600w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-with-Jean-after-being-pseudo-hooded-at-the-post-defense-celebration-560x796.jpg 560w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-with-Jean-after-being-pseudo-hooded-at-the-post-defense-celebration-scaled.jpg 1801w\" sizes=\"auto, (max-width: 211px) 100vw, 211px\" \/><\/p>\n<p><strong>Research, Mentorship and Leadership<\/strong><\/p>\n<p>For her thesis work, Dalia uncovered a key mechanism by which the oncoprotein c-MYC promotes rapid cell proliferation: by accelerating origin licensing during the G1 phase of the cell cycle: the rate-limiting step of DNA replication. In addition to this central discovery, Dalia collaborated extensively with research groups across UNC, contributing critical insights into the role of <a href=\"https:\/\/unclineberger.org\/news\/unc-researchers-discover-an-enzyme-that-protects-dna-during-rapid-cell-divisions\/\">USP37<\/a>, cyclin E1, HER2, and FGFR2 in cell cycle and cancer progression.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-31820 alignright\" src=\"https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-her-lab-desk-in-the-Cook-lab-225x300.jpg\" alt=\"Our grad student Dalia wearing a head covering at her lab desk in the Cook lab\" width=\"225\" height=\"300\" srcset=\"https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-her-lab-desk-in-the-Cook-lab-225x300.jpg 225w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-her-lab-desk-in-the-Cook-lab-768x1024.jpg 768w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-her-lab-desk-in-the-Cook-lab-1152x1536.jpg 1152w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-her-lab-desk-in-the-Cook-lab-1536x2048.jpg 1536w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-her-lab-desk-in-the-Cook-lab-600x800.jpg 600w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-her-lab-desk-in-the-Cook-lab-560x747.jpg 560w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-her-lab-desk-in-the-Cook-lab-scaled.jpg 1920w\" sizes=\"auto, (max-width: 225px) 100vw, 225px\" \/>In addition to her research accomplishments, Dalia has been a dedicated mentor and an active leader in service and outreach. She mentored numerous undergraduate students, research technicians, and rotation students in the Cook Lab, and served as a bench and PEERs mentor for<a href=\"https:\/\/www.med.unc.edu\/biochem\/news\/welcome-unc-sure-pparticipant-patricia-rodriguez-rodriguez-to-cook-lab\/\"> the UNC SURE program<\/a>, supporting underrepresented trainees in STEM. She served as the <a href=\"https:\/\/www.med.unc.edu\/biochem\/diversity\/congratulations-to-dalia-fleifel-our-new-bcbp-senator-in-the-gpsg\/\">BCBP program\u2019s senator<\/a> in the Graduate and Professional Student Government (GPSG) and co-founded the <a href=\"https:\/\/www.med.unc.edu\/biochem\/news\/students-lead-new-sustainability-initiatives-in-bcbp-or-introducing-bcbps-new-environmental-task-force\/\">Environmental Task Force<\/a> in the BCBP to encourage BCBP labs to adopt <a href=\"https:\/\/www.med.unc.edu\/biochem\/news\/bcbp-green-lab-initiative-to-create-eco-friendly-labs\/\">eco-friendly lab practices<\/a>.<\/p>\n<p>Dalia was also a passionate advocate for equity and community building at UNC. She played an instrumental role on the departmental seminar diversity committee. At the university level, she was a member of the Lineberger Cancer Center\u2019s Equity Council, where she helped implement more inclusive policies for internal funding mechanisms to better support historically excluded groups.<\/p>\n<p>Committed to science communication, Dalia co-organized the <a href=\"https:\/\/www.med.unc.edu\/biochem\/news\/the-2024-mary-ellen-jones-distinguished-women-in-science-lecture-will-be-given-by-eval-nogales-phd\/\">Mary Ellen Jones Distinguished Women in Science Lecture Series<\/a> in the BCBP department, authored <a href=\"https:\/\/www.med.unc.edu\/biochem\/news\/spotlight-on-research-in-the-neher-lab-at-unc-chapel-hill-with-uriel-jean-baptiste\/\">research highlights and blog posts<\/a> for both the BCBP department and the <a href=\"https:\/\/ncdnadayblog.org\/2022\/04\/29\/dna-replication-a-fundamental-yet-highly-complex-process\/\">NC DNA Day initiative<\/a>, and contributed to the <a href=\"https:\/\/www.med.unc.edu\/biochem\/news\/bcbp-faculty-research-labs-present-posters-during-bbsp-recruitment-weekend\/\">recruitment of new trainees<\/a> during BBSP orientation weeks. She also served on multiple selection committees for academic and administrative positions within the BCBP and UNC, and actively showcased her research work through posters and presentations at <a href=\"https:\/\/www.med.unc.edu\/biochem\/news\/outstanding-presentation-awards-from-this-years-student-run-seminar-series\/\">departmental seminars and retreats<\/a>, Lineberger <a href=\"https:\/\/unclineberger.org\/event\/48th-annual-unc-lineberger-postdoctoral-faculty-research-day\/\">symposia<\/a>, and national scientific conferences, including the Gordon Research Conference, <a href=\"https:\/\/www.med.unc.edu\/biochem\/news\/two-grad-students-in-cook-lab-presented-posters-at-86th-cshl-symposium-genome-stability-and-integrity\/\">CSHL Genome Stability and Integrity symposium<\/a>, and the <a href=\"https:\/\/unclineberger.org\/news\/unc-lineberger-and-unc-faculty-and-trainees-present-findings-at-aacr-annual-meeting\/\">American Association for Cancer Research (AACR)<\/a> annual meeting.<img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-31822 size-medium\" src=\"https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-UNC-flow-cytometry-core-wearing-the-Cook-lab-T-shirt-and-a-mask-during-covid-times-225x300.jpg\" alt=\"Dalia at the UNC flow cytometry core, wearing the Cook lab T-shirt and a mask during covid times. She wears a face covering and black headphones with eyes smiling\" width=\"225\" height=\"300\" srcset=\"https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-UNC-flow-cytometry-core-wearing-the-Cook-lab-T-shirt-and-a-mask-during-covid-times-225x300.jpg 225w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-UNC-flow-cytometry-core-wearing-the-Cook-lab-T-shirt-and-a-mask-during-covid-times-768x1024.jpg 768w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-UNC-flow-cytometry-core-wearing-the-Cook-lab-T-shirt-and-a-mask-during-covid-times-1152x1536.jpg 1152w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-UNC-flow-cytometry-core-wearing-the-Cook-lab-T-shirt-and-a-mask-during-covid-times-1536x2048.jpg 1536w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-UNC-flow-cytometry-core-wearing-the-Cook-lab-T-shirt-and-a-mask-during-covid-times-600x800.jpg 600w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-UNC-flow-cytometry-core-wearing-the-Cook-lab-T-shirt-and-a-mask-during-covid-times-560x747.jpg 560w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-UNC-flow-cytometry-core-wearing-the-Cook-lab-T-shirt-and-a-mask-during-covid-times-scaled.jpg 1920w\" sizes=\"auto, (max-width: 225px) 100vw, 225px\" \/><\/p>\n<p><strong>Awards and Fellowships<\/strong><\/p>\n<p>Recently, Dalia was the recipient of the <a href=\"https:\/\/www.med.unc.edu\/biochem\/news\/dalia-fleifel-receives-graduate-fellow-award-in-basic-sciences\/\">Graduate Fellow Award in Basic Science<\/a> from the Lineberger Cancer Center at UNC, and the <a href=\"https:\/\/www.med.unc.edu\/biochem\/news\/dalia-fleifel-receives-the-dianne-harris-leadership-award\/\">Diane Harris Award<\/a> for exemplary leadership from the BCBP department. Dalia was a <a href=\"https:\/\/www.med.unc.edu\/biochem\/news\/congratulations-to-grad-student-dalia-fleifel-for-being-awarded-a-predoctoral-fellowship-from-aha\/\">predoctoral AHA fellow<\/a> from 2023 through 2025 and was awarded an <a href=\"https:\/\/www.med.unc.edu\/biochem\/news\/dalia-tarek-fleifel-receives-the-aacr-scholar-training-award\/\">independent educational grant from Abbvie<\/a> to support her travels to the AACR meeting in 2025.<\/p>\n<p><strong>Publications<\/strong><\/p>\n<ol>\n<li>Bolhuis, D.L.*, <strong><u>Fleifel, D.*,<\/u><\/strong> Bonacci, T.*, Wang, X., Mouery, B.L., Cook, J.G., Brown, N.B., Emanuele, M.J., 2025. USP37 prevents unscheduled replisome unloading through MCM complex deubiquitination. <em>Nature Communications<\/em>. 16(1):4575. doi: 1038\/s41467-025-59770-7.<\/li>\n<li>Wang, Y.*, Cope, O.*, Chen, J.*, Mehta, A., <strong><u>Fleifel, D.,<\/u><\/strong> Ford, C., Benhamie, P., Haase, S., Gulec, S., Elston, T., Spanheimer, P., Tomblin, C.A., Rojas, A.M., Tate, T., Purvis, J., Wang, J., Dahl., J.M., Wolff, S., Cook, J.G., Brunk, E., 2025. Extrachromosomal DNA Gives Cancer a New Evolutionary Pathway. <em>bioRxiv<\/em>. doi: 10.1101\/2025.04.26.650733. (Under review).<\/li>\n<li>Stephenson G., <strong><u>Fleifel D.,<\/u><\/strong> Cook, J.G., Laederach A., Ramos, Silvia B.V., 2025. Differential targeting of mRNA decay activator ZFP36L2 in mouse tissues. (Under review).<\/li>\n<li>Mouery, B.L., Baker, E.M., Mei, L., Wolff, S.C., Mills, C.A., <strong><u>Fleifel, D.,<\/u><\/strong> Mulugeta, N., Herring, L.E., and Cook, J.G., 2024. APC\/C prevents a noncanonical order of cyclin\/CDK activity to maintain CDK4\/6 inhibitor-induced arrest. <em>PNAS, <\/em>121(30). doi: 10.1073\/pnas.2319574121.<\/li>\n<li><strong><u>Fleifel, D.,<\/u><\/strong> and Cook, J.G., 2023. G1 dynamics at the crossroads of pluripotency and cancer. <em>Cancers, <\/em>15(18). doi: 10.3390\/cancers15184559.<\/li>\n<li>Limas, J.C., Littlejohn, A.N., House, A.M., Kedziora, K.M., Mouery, B.L., Ma, B., <strong><u>Fleifel, D.,<\/u><\/strong> Walens, A., Aleman, M.M., Dominguez, D. and Cook, J.G., 2022. Quantitative profiling of adaptation to cyclin E overproduction.\u00a0<em>Life Science Alliance<\/em>, 5(5). doi:10.26508\/lsa.202201378.<\/li>\n<\/ol>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-31821 alignleft\" src=\"https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-post-defense-celebration-191x300.jpg\" alt=\"Dalia at the post-defense celebration standing by sign &quot;Dalia PhD Done&quot;\" width=\"191\" height=\"300\" srcset=\"https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-post-defense-celebration-191x300.jpg 191w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-post-defense-celebration-651x1024.jpg 651w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-post-defense-celebration-768x1208.jpg 768w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-post-defense-celebration-977x1536.jpg 977w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-post-defense-celebration-1302x2048.jpg 1302w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-post-defense-celebration-600x944.jpg 600w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-post-defense-celebration-560x881.jpg 560w, https:\/\/www.med.unc.edu\/biochem\/wp-content\/uploads\/sites\/795\/2025\/07\/Dalia-at-the-post-defense-celebration-scaled.jpg 1628w\" sizes=\"auto, (max-width: 191px) 100vw, 191px\" \/><\/p>\n<hr \/>\n<p><strong>Highlights<\/strong><\/p>\n<p><a href=\"https:\/\/www.med.unc.edu\/biochem\/news\/graduate-student-spotlight-dalia-fleifel\/\">Graduate Student Spotlight: Dalia Fleifel<\/a><\/p>\n<p>Read more: <a href=\"https:\/\/www.med.unc.edu\/biochem\/news\/prestigious-external-fellowship-winners-announced\/\">Prestigious External Fellowships<\/a><\/p>\n<p>More on the\u00a0<a href=\"https:\/\/ncdnadayblog.org\/2022\/04\/22\/music-therapy\/\">NC DNA Day initiative<\/a><\/p>\n<p>Dalia will continue as a postdoctoral researcher in the Cook Lab at UNC Chapel Hill, tying up exciting projects as she prepares for the next chapter in her career. We wish her all the success and fulfillment her future endeavors deserve!<\/p>\n<hr \/>\n<p><em>author Carolyn Marie Clabo, Public Communications Specialist (Director of Communications and Development)<\/em><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dr. Dalia Fleifel successfully defended her thesis, titled \u201cDNA replication keynote and code: MCM\u2019s journey on and off\u201d on July 7, 2025. As a graduate student, Dalia was an active member of the Jean Cook lab and a student leader within the department.<\/p>\n","protected":false},"author":41619,"featured_media":31766,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"layout":"","cellInformation":"","apiCallInformation":"","footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[22,13],"class_list":["post-31765","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-news_alum","tag-news_students","odd"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Congratulations to our new PhD, Dr. Dalia Fleifel! | Biochemistry and Biophysics<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.med.unc.edu\/biochem\/news\/congratulations-to-our-new-phd-dr-dalia-fleifel\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Congratulations to our new PhD, Dr. Dalia Fleifel! | Biochemistry and Biophysics\" \/>\n<meta property=\"og:description\" content=\"Dr. Dalia Fleifel successfully defended her thesis, titled \u201cDNA replication keynote and code: MCM\u2019s journey on and off\u201d on July 7, 2025. 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