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Dinghuan W, Yi K, Jianzhi T, Wenfei W, Chunlin W, Anling H, Zhixu H, Ben-David Y, Sheng L, Xiaoyan Y, Xiao X. A novel iheyamine A derivative L42 suppresses acute myeloid leukemia via dual regulation of the PI3K/AKT/FOXO3a axis and TNF signaling pathway. Biomed Pharmacother 2024; 177:117071. [PMID: 38981243 DOI: 10.1016/j.biopha.2024.117071] [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: 01/29/2024] [Revised: 06/22/2024] [Accepted: 06/29/2024] [Indexed: 07/11/2024] Open
Abstract
Acute myeloid leukemia (AML) is one of the most common hematopoietic malignancies and the development of new drugs is crucial for the treatment of this lethal disease. Iheyamine A is a nonmonoterpenoid azepinoindole alkaloid from the ascidian Polycitorella sp., and its anticancer mechanism has not been investigated in leukemias. Herein, we showed the significant antileukemic activity of L42 in AML cell lines HEL, HL-60 and THP-1. The IC50 values were 0.466±0.099 µM, 0.356±0.023 µM, 0.475±0.084 µM in the HEL, HL-60 and THP-1 cell lines, respectively, which were lower than the IC50 (2.594±0.271 µM) in the normal liver cell line HL-7702. Furthermore, L42 significantly inhibited the growth of peripheral blood mononuclear cells (PBMCs) from an AML patient. In vivo, L42 effectively suppressed leukemia progression in a mouse model induced by Friend murine leukemia virus (F-MuLV). Mechanistically, we showed that L42 induced cell cycle arrest and apoptosis in leukemia cell lines. RNA sequencing analysis of L42-treated THP-1 cells revealed that the differentially expressed genes (DEGs) were enriched in the cell cycle and apoptosis and predominantly enriched in the PI3K/AKT pathway. Accordingly, L42 decreased the expression of the phospho-PI3K (p85), phospho-AKT and phospho-FOXO3a. Docking and CETSA analysis indicated that L42 bound to the PI3K isoform p110α (PIK3CA), which was implicated in the suppression of the PI3K/AKT pathway. L42 was also shown to initiate the TNF signaling-mediated apoptosis. Moreover, L42 exhibited stronger anti-leukemia activity and sensitivity in IDH2-mutant HEL cells than in IDH2-wild-type control. In conclusion, L42 effectively suppresses cell proliferation and triggers apoptosis in AML cell lines in part through inhibition of the PI3K/AKT signaling pathway to restore FOXO3a expression and activation of the TNF signaling pathway. Thus, the iheyamine A derivative L42 represents a novel candidate for AML therapy.
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Affiliation(s)
- Wang Dinghuan
- Department of Pediatrics, the Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550000, PR China; State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou 550014, PR China; Natural Products Research Center of Guizhou Province, Guiyang, Guizhou 550014, PR China
| | - Kuang Yi
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou 550014, PR China
| | - Tian Jianzhi
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou 550014, PR China; Natural Products Research Center of Guizhou Province, Guiyang, Guizhou 550014, PR China
| | - Wei Wenfei
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou 550014, PR China; Natural Products Research Center of Guizhou Province, Guiyang, Guizhou 550014, PR China
| | - Wang Chunlin
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou 550014, PR China; Natural Products Research Center of Guizhou Province, Guiyang, Guizhou 550014, PR China
| | - Hu Anling
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou 550014, PR China; Natural Products Research Center of Guizhou Province, Guiyang, Guizhou 550014, PR China
| | - He Zhixu
- Department of Pediatrics, the Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550000, PR China
| | - Yaacov Ben-David
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou 550014, PR China; Natural Products Research Center of Guizhou Province, Guiyang, Guizhou 550014, PR China.
| | - Liu Sheng
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou 550014, PR China; Natural Products Research Center of Guizhou Province, Guiyang, Guizhou 550014, PR China.
| | - Yang Xiaoyan
- Department of Pediatrics, the Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550000, PR China.
| | - Xiao Xiao
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou 550014, PR China; Natural Products Research Center of Guizhou Province, Guiyang, Guizhou 550014, PR China.
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Chouhan R, Bhattacharyya H, Das SK. Diastereocontrolled Construction of Spiroindolenines via Hexafluoroisopropanol-Promoted Dearomative Epoxide-Indole Cyclization. Org Lett 2024; 26:1088-1093. [PMID: 38271293 DOI: 10.1021/acs.orglett.3c04361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Herein, we report the discovery of the ipso-selective, dearomatizing spirocyclization of indole-tethered epoxides as a fundamentally new approach for constructing spiroindolenines equipped with three contiguous stereogenic centers under complete diastereocontrol (dr >99:1) and in high yields. Promoted by hexafluoroisopropanol, the protocol features a broad substrate scope, easy scale-up, and versatile transformations of the synthesized spiroindolenines.
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Affiliation(s)
- Raju Chouhan
- Department of Chemical Sciences, Tezpur University, Napaam, Sonitpur, Assam 784028, India
| | - Hemanga Bhattacharyya
- Department of Chemical Sciences, Tezpur University, Napaam, Sonitpur, Assam 784028, India
| | - Sajal Kumar Das
- Department of Chemical Sciences, Tezpur University, Napaam, Sonitpur, Assam 784028, India
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