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Liu L, Xu H, Shi Y, Cui J, Wu J, Li S. p53 regulates the effects of DAPT on Rac1 activation and migration of non-small-cell lung cancer cells. Heliyon 2023; 9:e14169. [PMID: 36923886 PMCID: PMC10009732 DOI: 10.1016/j.heliyon.2023.e14169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/21/2023] [Accepted: 02/23/2023] [Indexed: 03/06/2023] Open
Abstract
The use of γ-secretase inhibitors to inhibit the activation of Notch receptors can effectively inhibit the malignant process of tumors. Here, we demonstrate that p53 can modulate the effect of DAPT (a γ-secretase inhibitor) on the activation of small GTPase Rac1, thereby affecting cell migration of non-small-cell lung cancer H1299 and A549 cells. After treatment with 20 μM DAPT, activation of Rac1 was increased in H1299 cells but not in A549 cells. We further found that the migration ability of H1299 cells was increased, whereas that of A549 cells was reduced. The effect of DAPT on H1299 migration was repressed by Rac1-T17N, a dominant inactivated mutant of Rac1. H1299 is a p53-deficient cell line. When p53 protein was overexpressed in H1299 cells with a pEGFP-p53 plasmid, DAPT treatment no longer activated Rac1 and increased migration ability. Moreover, DAPT promoted the migration of H1299 cells by increasing the activity of Rac1 through the non-canonical Notch pathway. Taken together, these results indicate that the expression of p53 protein in lung cancer cells regulates the effect of DAPT on cell migration by modulating the activation of Rac1, suggesting that p53 may affect the therapeutic effects of Notch inhibitors in lung cancer patients.
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Affiliation(s)
- Lei Liu
- Department of Physiology, Xuzhou Medical University, No. 209 Tongshan Road, Xuzhou, Jiangsu, 221004, China
| | - Hong Xu
- Emergency Center, Xuzhou Tongshan District People's Hospital, No. 267 Huaihai West Road, Xuzhou, Jiangsu, 221006, China
| | - Yue Shi
- Department of Physiology, Xuzhou Medical University, No. 209 Tongshan Road, Xuzhou, Jiangsu, 221004, China
| | - Jie Cui
- Department of Physiology, Xuzhou Medical University, No. 209 Tongshan Road, Xuzhou, Jiangsu, 221004, China
| | - Jinxia Wu
- Department of Physiology, Xuzhou Medical University, No. 209 Tongshan Road, Xuzhou, Jiangsu, 221004, China
| | - Shibao Li
- Department of Laboratory Medicine, The Affiliated Hospital of Xuzhou Medical University, No. 99 Huaihai West Road, Xuzhou, Jiangsu, 221000, China
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Henrique D, Schweisguth F. Mechanisms of Notch signaling: a simple logic deployed in time and space. Development 2019; 146:146/3/dev172148. [PMID: 30709911 DOI: 10.1242/dev.172148] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Most cells in our body communicate during development and throughout life via Notch receptors and their ligands. Notch receptors relay information from the cell surface to the genome via a very simple mechanism, yet Notch plays multiple roles in development and disease. Recent studies suggest that this versatility in Notch function may not necessarily arise from complex and context-dependent integration of Notch signaling with other developmental signals, but instead arises, in part, from signaling dynamics. Here, we review recent findings on the core Notch signaling mechanism and discuss how spatial-temporal dynamics contribute to Notch signaling output.
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Affiliation(s)
- Domingos Henrique
- Instituto de Histologia e Biologia do Desenvolvimento and Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egaz Moniz, 1649-028 Lisboa, Portugal
| | - François Schweisguth
- Institut Pasteur, Department of Developmental and Stem Cell Biology, F-75015 Paris, France .,CNRS, UMR3738, F-75015 Paris, France
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