BUFFALO, NY- December 18, 2023 – A new research #perspective was #published in Oncotarget's Volume 14 on December 12, 2023, entitled, “Melatonin and carcinogenesis in mice: the 50th anniversary of relationships.” Fifty years ago, in 1973, Vladimir N. Anisimov and coauthors demonstrated for the first time an inhibitory effect of the pineal gland hormone melatonin on cancer in vivo, namely on transplantable mammary tumors in mice. Subsequently, it was shown in a number of studies that melatonin administration with drinking water at night inhibits chemically induced mammary carcinogenesis in mice and rats. On the contrary, maintaining female mice and rats under round-the-clock lighting conditions, which suppresses the nighttime production of melatonin, stimulates spontaneous and chemical carcinogen-induced mammary tumor development. As of today, the query “cancer AND melatonin AND mice” in Pubmed returns about 550 entries. In this new research perspective, researchers Vladimir N. Anisimov and Alexey G. Golubev from N.N. Petrov National Medical Research Center of Oncology outline the history of studies of melatonin effects on cancer in mice, with the main lesson being that the systemic in vivo effects of melatonin on animals may overwhelm the in vitro effects found using tissue explants or cell cultures. “In particular, the timing of melatonin administration is of crucial importance for using the drug, which is freely available over [the] counter and thus needs no licensing for its applications in oncology.” DOI - https://doi.org/10.18632/oncotarget.28537 Correspondence to - Vladimir N. Anisimov - aging@mail.ru Sign up for free Altmetric alerts about this article - https://oncotarget.altmetric.com/details/email_updates?id=10.18632%2Foncotarget.28537 Subscribe for free publication alerts from Oncotarget - https://www.oncotarget.com/subscribe/ Keywords - cancer, melatonin, mice About Oncotarget Oncotarget (a primarily oncology-focused, peer-reviewed, open access journal) aims to maximize research impact through insightful peer-review; eliminate borders between specialties by linking different fields of oncology, cancer research and biomedical sciences; and foster application of basic and clinical science. To learn more about Oncotarget, please visit https://www.oncotarget.com and connect with us: SoundCloud - https://soundcloud.com/oncotarget Facebook - https://www.facebook.com/Oncotarget/ X - https://twitter.com/oncotarget Instagram - https://www.instagram.com/oncotargetjrnl/ YouTube - https://www.youtube.com/@OncotargetJournal LinkedIn - https://www.linkedin.com/company/oncotarget Pinterest - https://www.pinterest.com/oncotarget/ Reddit - https://www.reddit.com/user/Oncotarget/ Media Contact MEDIA@IMPACTJOURNALS.COM 18009220957