Rapamycin decelerates cellular senescence. Zoya N Demidenko
Rapamycin decelerates cellular senescence
Abstract
When the cell cycle is arrested but cellular growth is not, then cells senesce, permanently losing proliferative potential. Here we demonstrated that the duration of cell cycle arrest determines a progressive loss of proliferative capacity. In human and rodent cell lines, rapamycin (an inhibitor of mTOR) dramatically decelerated loss of proliferative potential caused by ectopic p21, p16 and sodium butyrate-induced p21. Thus, when the cell cycle was arrested by these factors in the presence of rapamycin, cells retained the capacity to resume proliferation, once p21, p16 or sodium butyrate were removed. While rapamycin prevented the permanent loss of proliferative potential in arrested cells, it did not force the arrested cells into proliferation. During cell cycle arrest, rapamycin transformed the irreversible arrest into a reversible condition. Our data demonstrate that senescence can be pharmacologically suppressed.
oncotarget impact Zoya Demidenko Dr. Zoya N. Demidenko Zoya N. Demidenko , Ph.D. is Executive Manager of the Oncotarget journal . Oncotarget publishes high-impact research papers of general interest and outstanding significance and novelty in all areas of biology and medicine: in translational, basic and clinical research including but not limited to cancer research, oncogenes, oncoproteins and tumor suppressors, signaling pathways as potential targets for therapeutic intervention, shared targets in different diseases (cancer, benign tumors, atherosclerosis, eukaryotic infections, metabolic syndrome and other age-related diseases), chemotherapy, and new therapeutic strategies. After earning her Ph.D. in molecular biology, Zoya was awarded a Fogarty post-doctoral Fellowship from the National Institutes of Health in Bethesda, MD. After successful completion of post-doctoral training, she continued her professional career at George Washington University and Albert Einstein School of Medicine . In 2005 she cofounded the startup company Oncotarget Inc. which is focused on the development of anti-aging and anti-cancer drugs. Her research interests include signal transduction, cell cycle and cellular senescence, and their pharmacological targeting. In 2009 she cofounded the publishing house Impact Journals which specializes in publishing scientific journals. In 2011 she was selected to be a Member of the National Association of Professional Women .
https://www.semanticscholar.org/author/Zoya-N.-Demidenko/4772760 When public refer to contemporary medicine, accuracy plays one of the most significant roles and people’s lives are literally dependent on it. Hence, any researches related to medicine are required to meet the highest standards. The problem nowadays is that any outcomes of researches can be shared online and used as a reference without being precisely verified and approved. Mikhail (Misha) Blagosklonny of Oncotarget clearly understood this issue and tried to generate an alternative solution. That’s how a weekly oncology-focused research journal called “Oncotarget” has been founded back in 2010. The key principle of this journal is related to Altmetric scores that are used as a quality indicator. That allows both readers and authors to validate publications with Altmetric Article Reports that create “real-time feedback containing data summary related to a particular publication.” Oncotarget website has a complete publications list with respective scores higher than 100 as well as reports mentioned above. Mikhail (Misha) Blagosklonny proud to share his new approach and hopes it creates the necessary help to anybody, who has interest in oncology.
“A diagnostic autoantibody signature for primary cutaneous melanoma” has the Altmetric score of 594. This paper was released back in 2018 by Oncotarget and written by diversified experts from Hollywood Private Hospital, Edith Cowan University, Dermatology Specialist Group, St. John of God Hospital and The University of Western Australia. The introduction of the study discusses “recent data shows that Australians are four times more likely to develop a cancer of the skin than any other type of cancer”, and shares an insight on melanoma that “is curable by surgical excision in the majority of cases, if detected at an early stage.”
The publication has got an Altmetric score of 594. Mikhail (Misha) Blagosklonny realizes that majority of readers are willing to comprehend the very meaning of it. Based on the Altmetric website, the score relates to “how many people have been exposed to and engaged with a scholarly output.” Likewise, the publication about melanoma, was used for citations in various news articles 69 times. In addition, it was referred to in 2 online blogs, as well as 25 Tweets on Twitter and 1 Facebook post. FOX23 of Tulsa, Oklahoma has headlined their report on July 20, 2018 as “New blood test could detect skin cancer early”, using the main content of Australia study
Another Oncotarget’s research with a top score of 476, is “Biomarkers for early diagnosis of malignant mesothelioma: Do we need another moon-shot,”. This study has appeared in 60 news stories, 1 online blog post and 6 Twitter posts. The majority of public may have seen a short overview only, however those who visit Mikhail (Misha) Blagosklonny at Oncotarget, do receive useful scientific facts. Oncotarget is proud to have the ability to share with online customers this highly appreciated and top-quality information, that is trustworthy and reliable.
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