Wang 2024 Adv Sci (Weinh)
| Wang H, Stevens T, Lu J, Roberts A, Van't Land C, Muzumdar R, Gong Z, Vockley J, Prochownik EV (2024) Body-wide inactivation of the Myc-like Mlx transcription factor network accelerates aging and increases the lifetime cancer incidence. Adv Sci (Weinh) [Epub ahead of print]. https://doi.org/10.1002/advs.202401593 |
Wang Huabo, Stevens Taylor, Lu Jie, Roberts Alexander, Van't Land Clinton, Muzumdar Radhika, Gong Zhenwei, Vockley Jerry, Prochownik Edward V (2024) Adv Sci (Weinh)
Abstract: The "Mlx" and "Myc" transcription factor networks cross-communicate and share many common gene targets. Myc's activity depends upon its heterodimerization with Max, whereas the Mlx Network requires that the Max-like factor Mlx associate with the Myc-like factors MondoA or ChREBP. The current work demonstrates that body-wide Mlx inactivation, like that of Myc, accelerates numerous aging-related phenotypes pertaining to body habitus and metabolism. The deregulation of numerous aging-related Myc target gene sets is also accelerated. Among other functions, these gene sets often regulate ribosomal and mitochondrial structure and function, genomic stability, and aging. Whereas "MycKO" mice have an extended lifespan because of a lower cancer incidence, "MlxKO" mice have normal lifespans and a higher cancer incidence. Like Myc, the expression of Mlx, MondoA, and ChREBP and their control over their target genes deteriorate with age in both mice and humans. Collectively, these findings underscore the importance of lifelong and balanced cross-talk between the two networks to maintain proper function and regulation of the many factors that can affect normal aging. • Keywords: TCA cycle, Warburg effect, Glycolysis, Mitochondria, Reactive oxygen species, Telomeres • Bioblast editor: Plangger M • O2k-Network Lab: US PA Pittsburgh Prochownik EV
Labels: MiParea: Respiration, Genetic knockout;overexpression
Pathology: Aging;senescence, Cancer
Organism: Mouse Tissue;cell: Fat, Skeletal muscle, Liver Preparation: Isolated mitochondria
Coupling state: LEAK, OXPHOS
Pathway: F, N, S, NS
HRR: Oxygraph-2k
2024-07
