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Mazor G, Smirnov D, Ben David H, Khrameeva E, Toiber D, Rotblat B. TP73-AS1 is induced by YY1 during TMZ treatment and highly expressed in the aging brain. Aging (Albany NY) 2021; 13:14843-14861. [PMID: 34115613 PMCID: PMC8221307 DOI: 10.18632/aging.203182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 05/18/2021] [Indexed: 12/11/2022]
Abstract
Aging is a factor associated with poor prognosis in glioblastoma (GBM). It is therefore important to understand the molecular features of aging contributing to GBM morbidity. TP73-AS1 is a long noncoding RNA (lncRNA) over expressed in GBM tumors shown to promote resistance to the chemotherapeutic temozolomide (TMZ), and tumor aggressiveness. How the expression of TP73-AS1 is regulated is not known, nor is it known if its expression is associated with aging. By analyzing transcriptional data obtained from natural and pathological aging brain, we found that the expression of TP73-AS1 is high in pathological and naturally aging brains. YY1 physically associates with the promoter of TP73-AS1 and we found that along with TP73-AS1, YY1 is induced by TMZ. We found that the TP73-AS1 promoter is activated by TMZ, and by YY1 over expression. Using CRISPRi to deplete YY1, we found that YY1 promotes up regulation of TP73-AS1 and the activation of its promoter during TMZ treatment. In addition, we identified two putative YY1 binding sites within the TP73-AS1 promoter, and used mutagenesis to find that they are essential for TMZ mediated promoter activation. Together, our data positions YY1 as an important TP73-AS1 regulator, demonstrating that TP73-AS1 is expressed in the natural and pathological aging brain, including during neurodegeneration and cancer. Our findings advance our understanding of TP73-AS1 expression, bringing forth a new link between TMZ resistance and aging, both of which contribute to GBM morbidity.
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Affiliation(s)
- Gal Mazor
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel
| | - Dmitri Smirnov
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel.,Center of Life Sciences, Skolkovo Institute of Science and Technology, Moscow 121205, Russia.,The Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel
| | - Hila Ben David
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel
| | - Ekaterina Khrameeva
- Center of Life Sciences, Skolkovo Institute of Science and Technology, Moscow 121205, Russia
| | - Debra Toiber
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel.,The Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel
| | - Barak Rotblat
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel.,The National Institute for Biotechnology in the Negev, Beer Sheva 8410501, Israel
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Napoli M, Flores ER. The p53 family reaches the final frontier: the variegated regulation of the dark matter of the genome by the p53 family in cancer. RNA Biol 2020; 17:1636-1647. [PMID: 31910062 PMCID: PMC7567494 DOI: 10.1080/15476286.2019.1710054] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The tumour suppressor p53 and its paralogues, p63 and p73, are essential to maintain cellular homoeostasis and the integrity of the cell's genetic material, thus meriting the title of 'guardians of the genome'. The p53 family members are transcription factors and fulfill their activities by controlling the expression of protein-coding and non-coding genes. Here, we review how the latter group transcended from the 'dark matter' of the transcriptome, providing unexpected and intriguing anti-cancer therapeutic strategies.
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Affiliation(s)
- Marco Napoli
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute , Tampa, FL, USA.,Cancer Biology and Evolution Program, H. Lee Moffitt Cancer Center and Research Institute , Tampa, FL, USA
| | - Elsa R Flores
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute , Tampa, FL, USA.,Cancer Biology and Evolution Program, H. Lee Moffitt Cancer Center and Research Institute , Tampa, FL, USA
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Lanna C, Mancini M, Gaziano R, Cannizzaro MV, Galluzzo M, Talamonti M, Rovella V, Annicchiarico-Petruzzelli M, Melino G, Wang Y, Shi Y, Campione E, Bianchi L. Skin immunity and its dysregulation in psoriasis. Cell Cycle 2019; 18:2581-2589. [PMID: 31416396 DOI: 10.1080/15384101.2019.1653099] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The skin is a peripheral lymphoid organ, being the first immunological defense against infections as the initial interface between the organism and the external background. The maintenance of the skin immune homeostasis depends on a finely equilibrium of well-regulated relations between different cells and exogenous pathogens. Inflammatory skin diseases are directly linked to the dysregulation of this equilibrium. The present review discusses the role of the immune system, of T cells, in the etiopathogenesis of psoriasis, illustrating a potential rationale for innovative therapeutic intervention.
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Affiliation(s)
- Caterina Lanna
- Unit of Dermatology, Department of Systems Medicine, University of Rome 'Tor Vergata' , Rome , Italy
| | - Mara Mancini
- Biochemistry Laboratory, Istituto Dermopatico Immacolata (IDI-IRCCS) , Rome , Italy
| | - Roberta Gaziano
- Department of Experimental Medicine, TOR, University of Rome Tor Vergata , Rome , Italy
| | - Maria Vittoria Cannizzaro
- Unit of Dermatology, Department of Systems Medicine, University of Rome 'Tor Vergata' , Rome , Italy
| | - Marco Galluzzo
- Unit of Dermatology, Department of Systems Medicine, University of Rome 'Tor Vergata' , Rome , Italy
| | - Marina Talamonti
- Unit of Dermatology, Department of Systems Medicine, University of Rome 'Tor Vergata' , Rome , Italy
| | - Valentina Rovella
- Biochemistry Laboratory, Istituto Dermopatico Immacolata (IDI-IRCCS) , Rome , Italy
| | | | - Gerry Melino
- Biochemistry Laboratory, Istituto Dermopatico Immacolata (IDI-IRCCS) , Rome , Italy.,Department of Experimental Medicine, TOR, University of Rome Tor Vergata , Rome , Italy
| | - Ying Wang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences/Shanghai Jiao Tong University School of Medicine, University of Chinese Academy of Sciences, Chinese Academy of Sciences , Shanghai , China
| | - Yufang Shi
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences/Shanghai Jiao Tong University School of Medicine, University of Chinese Academy of Sciences, Chinese Academy of Sciences , Shanghai , China.,The First Affiliated Hospital of Soochow University, State Key Laboratory of Radiation Medicine and Protection, Institutes for Translational Medicine, Soochow University Medical College , Suzhou , Jiangsu , 215123 , China
| | - Elena Campione
- Unit of Dermatology, Department of Systems Medicine, University of Rome 'Tor Vergata' , Rome , Italy
| | - Luca Bianchi
- Unit of Dermatology, Department of Systems Medicine, University of Rome 'Tor Vergata' , Rome , Italy
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