1
|
Wang CM, Li HF, Wang XK, Li WG, Su Q, Xiao X, Hao TF, Chen W, Zhang YW, Zhang HY, Wu W, Hu ZR, Zhao GY, Huo MY, He YL, Zhang CH. Ailanthus Altissima-derived Ailanthone enhances Gastric Cancer Cell Apoptosis by Inducing the Repression of Base Excision Repair by Downregulating p23 Expression. Int J Biol Sci 2021; 17:2811-2825. [PMID: 34345209 PMCID: PMC8326126 DOI: 10.7150/ijbs.60674] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 05/21/2021] [Indexed: 12/13/2022] Open
Abstract
Chemotherapy plays an irreplaceable role in the treatment of GC, but currently available chemotherapeutic drugs are not ideal. The application of medicinal plants is an important direction for new drug discovery. Through drug screening of GC organoids, we determined that ailanthone has an anticancer effect on GC cells in vitro and in vivo. We also found that AIL can induce DNA damage and apoptosis in GC cells. Further transcriptome sequencing of PDX tissue indicated that AIL inhibited the expression of XRCC1, which plays an important role in DNA damage repair, and the results were also confirmed by western blotting. In addition, we found that AIL inhibited the expression of P23 and that inhibition of P23 decreased the expression of XRCC1, indicating that AIL can regulate XRCC1 via P23. The results of coimmunoprecipitation showed that AIL can inhibit the binding of P23 and XRCC1 to HSP90. These findings indicate that AIL can induce DNA damage and apoptosis in GC cells. Meanwhile, AIL can decrease XRCC1 activity by downregulating P23 expression to inhibit DNA damage repair. The present study sheds light on the potential application of new drugs isolated from natural medicinal plants for GC therapy.
Collapse
Affiliation(s)
- Chun-Ming Wang
- Digestive Disease Center, The Seventh Affiliated Hospital of Sun Yat‑Sen University, Shenzhen, Guangdong 518107, P.R. China.,Department of Gastrointestinopancreatic Surgery, The First Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510080, P.R. China.,Department of Intervention, The People's Hospital of Guangxi Zhuang Autonomous Region,Nanning Guangxi 530021,P.R. China
| | - Hua-Fu Li
- Digestive Disease Center, The Seventh Affiliated Hospital of Sun Yat‑Sen University, Shenzhen, Guangdong 518107, P.R. China.,Adult Stem Cell Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK.,The Institute of Cancer Research, 237 Fulham Road, London SW3 6JB, UK
| | - Xiao-Kun Wang
- Digestive Disease Center, The Seventh Affiliated Hospital of Sun Yat‑Sen University, Shenzhen, Guangdong 518107, P.R. China.,Department of Gastrointestinopancreatic Surgery, The First Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Wu-Guo Li
- Animal Experiment Center, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, P.R. China
| | - Qiao Su
- Animal Experiment Center, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, P.R. China
| | - Xing Xiao
- Scientific research center, The Seventh Affiliated Hospital of Sun Yat‑Sen University, Shenzhen, Guangdong 518107, P.R.China
| | - Teng-Fei Hao
- Digestive Disease Center, The Seventh Affiliated Hospital of Sun Yat‑Sen University, Shenzhen, Guangdong 518107, P.R. China.,Department of Gastrointestinopancreatic Surgery, The First Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Wei Chen
- Scientific research center, The Seventh Affiliated Hospital of Sun Yat‑Sen University, Shenzhen, Guangdong 518107, P.R.China
| | - Ya-Wei Zhang
- Digestive Disease Center, The Seventh Affiliated Hospital of Sun Yat‑Sen University, Shenzhen, Guangdong 518107, P.R. China.,Department of Gastrointestinopancreatic Surgery, The First Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Hai-Yong Zhang
- Digestive Disease Center, The Seventh Affiliated Hospital of Sun Yat‑Sen University, Shenzhen, Guangdong 518107, P.R. China.,Department of Gastrointestinopancreatic Surgery, The First Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Wang Wu
- Digestive Disease Center, The Seventh Affiliated Hospital of Sun Yat‑Sen University, Shenzhen, Guangdong 518107, P.R. China.,Department of Gastrointestinopancreatic Surgery, The First Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Zhen-Ran Hu
- Scientific research center, The Seventh Affiliated Hospital of Sun Yat‑Sen University, Shenzhen, Guangdong 518107, P.R.China
| | - Guang-Yin Zhao
- Animal Experiment Center, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, P.R. China
| | - Ming-Yu Huo
- Digestive Disease Center, The Seventh Affiliated Hospital of Sun Yat‑Sen University, Shenzhen, Guangdong 518107, P.R. China
| | - Yu-Long He
- Digestive Disease Center, The Seventh Affiliated Hospital of Sun Yat‑Sen University, Shenzhen, Guangdong 518107, P.R. China.,Department of Gastrointestinopancreatic Surgery, The First Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Chang-Hua Zhang
- Digestive Disease Center, The Seventh Affiliated Hospital of Sun Yat‑Sen University, Shenzhen, Guangdong 518107, P.R. China
| |
Collapse
|
2
|
Huang Y, Song Y, You Y, Mi R, Han X, Gong H, Chen Z, Liu Y. Development of an immunocompetent mouse model susceptible to Cryptosporidium tyzzeri infection. Parasite Immunol 2020; 43:e12800. [PMID: 33068486 DOI: 10.1111/pim.12800] [Citation(s) in RCA: 2] [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: 03/18/2020] [Revised: 09/14/2020] [Accepted: 09/14/2020] [Indexed: 12/15/2022]
Abstract
AIMS Immunocompromised mice are extensively used in the screening of vaccines and drugs for Cryptosporidium, but this study model does not reflect the real status of infection in immunocompetent animals. This study aimed to provide an optimized animal model for future studies of Cryptosporidium vaccine. METHODS AND RESULTS Three mouse strains (ICR, BALB/c and KM) with or without immunosuppression were compared after challenge with Cryptosporidium tyzzeri (C tyzzeri). The results indicated that ICR mice shed a greater number of faecal oocysts (20 346 ± 203 oocysts/g) compared with BALB/c (2077 ± 142 oocysts/g) and KM mice (3207 ± 431 oocysts/g) after experimental infection with C tyzzeri (P < .001). However, ICR mouse model is uniquely effective for C tyzzeri, not for other Cryptosporidium spp. such as C parvum. ICR mice were then used to determine the immunoreactions and immunoprotection of P23-DNA vaccine (pVAX1-P23) to C tyzzeri experimental infection. The results showed that a significant increase in anti-P23 antibody levels was induced by the pVAX1-P23 vaccine. Compared to pVAX1, TB and blank control mice, pVAX1-P23 immunized mice produced specific spleen cell proliferation as well as enhanced IL-5, IL-12p70 and IFN-γ production in sera. After challenge with 5 × 106 C tyzzeri oocysts, the oocyst shedding of the pVAX1-P23 immunized group was reduced by 69.94% comparing to the infection control. CONCLUSION These results provide an optimized animal model for the study of prophylactic vaccines and this model might be applied to other candidates against Cryptosporidium, not only for pVAX1-P23.
Collapse
Affiliation(s)
- Y Huang
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China.,Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Y Song
- Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Y You
- Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - R Mi
- Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - X Han
- Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - H Gong
- Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Z Chen
- Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Y Liu
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| |
Collapse
|
3
|
Obermann WMJ. A motif in HSP90 and P23 that links molecular chaperones to efficient estrogen receptor α methylation by the lysine methyltransferase SMYD2. J Biol Chem 2018; 293:16479-16487. [PMID: 30190324 DOI: 10.1074/jbc.ra118.003578] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 08/31/2018] [Indexed: 11/06/2022] Open
Abstract
Heat shock protein 90 (HSP90) is a molecular chaperone that supervises folding of cellular signaling proteins such as steroid receptors and many protein kinases. HSP90 relies on ATP hydrolysis for powering a conformational circuit that helps fold the client protein. To that end, HSP90 binds to co-chaperone proteins that regulate ATP hydrolysis rate or interaction with client proteins. Co-chaperones such as P23, cell division cycle 37 (CDC37), or activator of HSP90 ATPase activity 1 (AHA1) interact with the N-terminal or middle domain of HSP90, whereas others, such as HSP70/HSP90-organizing protein (HOP), use tetratricopeptide repeat (TPR) domains to bind the EEVD motif at the very C-terminal end of HSP90. Recently, the lysine methyltransferase SET and MYND domain-containing 2 (SMYD2) has been proposed as an HSP90-binding partner, and interaction analyses indicate that SMYD2 binding to HSP90 is independent of the EEVD motif. Using the amplified luminescence proximity homogeneous assay (Alpha) technique, I identified a new (M/I/L/V)PXL motif at the C termini of HSP90 and P23 that mediates an interaction with SMYD2, and synthetic peptides harboring this motif dissociated this complex. Of note, the HSP90- and P23-dependent client estrogen receptor α (ERα), was a major methylation target of SMYD2. In a reconstituted system in bacteria, I analyzed HSP90/P23-associated, SMYD2-mediated ERα methylation and found that when SMYD2 binds to the molecular chaperones, it considerably increases methylation of Lys-266 in ERα. Because methylation represses ERα activity, the observed complex formation between SMYD2 and HSP90/P23 may contribute to ERα regulation.
Collapse
Affiliation(s)
- Wolfgang M J Obermann
- From the Department of Systems Physiology, Ruhr-University Bochum, Universitätsstrasse 150, 44801 Bochum, Germany
| |
Collapse
|