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Li SN, Li XA, Zhang Q, Hu YJ, Lei HR, Guo DL, Jiang LS, Deng Y. Chemical constitutes from Tuber indicum with immunosuppressive activity uncovered by transcriptome analysis. Fitoterapia 2024; 173:105773. [PMID: 38097020 DOI: 10.1016/j.fitote.2023.105773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 12/05/2023] [Accepted: 12/05/2023] [Indexed: 01/15/2024]
Abstract
Three previously undescribed compounds including a polyketide (1) and two lactams (2 and 3) were obtained from Tuber indicum. The structures of new findings were elucidated by HRESIMS, NMR as well as NMR and ECD calculations. Transcriptome analysis through RNA-seq revealed that compound 2 exhibits immunosuppressive activity. Lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages were employed as a model to explore the effect of these compounds in immunosuppressive activity. The results showed that 2 could reduce the generation of inflammatory mediators including nitric oxide (NO), reactive oxygen species (ROS), interleukin 6 (IL-6), tumor necrosis factor α (TNF-α), cyclooxygenase 2 (COX-2) and inducible nitric oxide synthase (iNOS). Western blotting analysis demonstrated that 2 could suppressed the PI3K pathway by decreasing the levels of p-PI3K and p-Akt, while increasing the levels of p-PTEN. The anti-inflammatory activity of 2 was further confirmed using a zebrafish in vivo model.
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Affiliation(s)
- Si-Ning Li
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xin-Ai Li
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China; Ningxia Chinese Medicine Research Center, Yinchuan, China
| | - Qi Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yun-Jie Hu
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hao-Ran Lei
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Da-Le Guo
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Li-Shi Jiang
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China; School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Yun Deng
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
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Boulos VM, Pourpoint TL, Updike B, Natvig H, Kenttamaa HI, Lei HR, Marcum J, Zhang Y. Detection of the Tetrahedral Reaction Intermediate of the Reaction of Acetyl Chloride with Ethanol in Microdroplets via Laser Desorption/Ionization Tandem Mass Spectrometry. Phys Chem Chem Phys 2022; 24:24690-24694. [DOI: 10.1039/d2cp03518a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Understanding the fundamental mechanisms of chemical reactions is of great interest to scientists working in many fields as it enables the rationalization, prediction, and design of reactions. Many chemical processes...
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Xu H, Ai JZ, Tan P, Lin TH, Jin X, Gong LN, Lei HR, Yang L, Wei Q. Pretreatment elevated fibrinogen level predicts worse oncologic outcomes in upper tract urothelial carcinoma. Asian J Androl 2021; 22:177-183. [PMID: 31169138 PMCID: PMC7155795 DOI: 10.4103/aja.aja_38_19] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
This study aimed to further validate the prognostic role of fibrinogen in upper tract urothelial carcinoma (UTUC) in a large Chinese cohort. A total of 703 patients who underwent radical nephroureterectomy were retrospectively identified. Fibrinogen levels of ≥4.025 g l−1 were defined as elevated. Logistic regression analysis was performed to determine the association between fibrinogen and adverse pathological features. Kaplan–Meier analysis and Cox regression models were used to assess the associations of fibrinogen with cancer-specific survival (CSS), disease recurrence-free survival (RFS), and overall survival (OS). Harrell c-index and decision curve analysis were used to assess the clinical utility of multivariate models. The median follow-up duration was 42 (range: 1–168) months. Logistic regression analysis revealed that elevated fibrinogen was associated with higher tumor stage and grade, lymph node involvement, lymphovascular invasion, sessile carcinoma, concomitant variant histology, and positive surgical margins (all P < 0.05). Multivariate Cox regression analysis demonstrated that elevated fibrinogen was independently associated with decreased CSS (hazard ratio [HR]: 2.33; P < 0.001), RFS (HR: 2.09; P < 0.001), and OS (HR: 2.09; P < 0.001). The predictive accuracies of the multivariate models were improved by 3.2%, 2.0%, and 2.8% for CSS, RFS, and OS, respectively, when fibrinogen was added. Decision curve analysis showed an added benefit for CSS prediction when fibrinogen was added to the model. Preoperative fibrinogen may be a strong independent predictor of worse oncologic outcomes in UTUC; therefore, it may be valuable to apply this marker to the current risk stratification in UTUC.
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Affiliation(s)
- Hang Xu
- Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jian-Zhong Ai
- Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Ping Tan
- Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Tian-Hai Lin
- Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xi Jin
- Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Li-Na Gong
- Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Hao-Ran Lei
- Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Lu Yang
- Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qiang Wei
- Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu 610041, China
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Sheng H, Ma X, Lei HR, Milton J, Tang W, Jin C, Gao J, Wittrig AM, Archibold EF, Nash JJ, Kenttämaa HI. Polar Effects Control the Gas-Phase Reactivity of para-Benzyne Analogs. Chemphyschem 2018; 19:2839-2842. [PMID: 30203923 DOI: 10.1002/cphc.201800646] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Indexed: 11/05/2022]
Abstract
We report herein a gas-phase reactivity study on a para-benzyne cation and its three cyano-substituted, isomeric derivatives performed using a dual-linear quadrupole ion trap mass spectrometer. All four biradicals were found to undergo primary and secondary radical reactions analogous to those observed for the related monoradicals, indicating the presence of two reactive radical sites. The reactivity of all biradicals is substantially lower than that of the related monoradicals, as expected based on the singlet ground states of the biradicals. The cyano-substituted biradicals show substantially greater reactivity than the analogous unsubstituted biradical. The greater reactivity is rationalized by the substantially greater (calculated) electron affinity of the radical sites of the cyano-substituted biradicals, which results in stabilization of their transition states through polar effects. This finding is in contrast to the long-standing thinking that the magnitude of the singlet-triplet splitting controls the reactivity of para-benzynes.
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Affiliation(s)
- Huaming Sheng
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
| | - Xin Ma
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
| | - Hao-Ran Lei
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
| | - Jacob Milton
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
| | - Weijuan Tang
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
| | - Chunfen Jin
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
| | - Jinshan Gao
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
| | - Ashley M Wittrig
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
| | - Enada F Archibold
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
| | - John J Nash
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
| | - Hilkka I Kenttämaa
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
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