1
|
Zhou Y, Yang D, Qiang Z, Meng Y, Li R, Fan X, Zhao W, Meng Y. Ribosome-inactivating Protein MAP30 Isolated from Momordica Charantia L. Induces Apoptosis in Hepatocellular Carcinoma Cells. Recent Pat Anticancer Drug Discov 2024; 19:223-232. [PMID: 36330636 DOI: 10.2174/1574892818666221103114649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/04/2022] [Accepted: 09/07/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Ribosome-inactivating proteins (RIPs) have been reported to exert antitumor and anti-virus activities. A recent patent CN202011568116.7 has developed a new method to prepare Momordica anti-HIV protein of 30 kDa (MAP30). MAP30 is a type I RIP, which kills various tumor cells through the N-glycosidase activity and irreversibly inhibits protein synthesis. OBJECTIVE To assess the potential role of MAP30 in inducing apoptosis of human hepatocellular carcinoma HCC-LM3 cells and elucidate the molecular mechanism of MAP30. METHODS CCK-8 assay was used to assess the proliferation of HCC-LM3 cells. Flow cytometry was used to measure the cycle, the level of ROS and apoptosis in HCC-LM3 cells. Western blots was used to measure protein levels. RESULTS Treatment with MAP30 reduced survival and proliferation of human liver cancer HCCLM3 cells in a dose-dependent manner. PI staining showed cell cycle arrest in G0/G1 phase. Furthermore, MAP30 increased the level of ROS in HCC-LM3 cells in 24 h treatment. To further confirm the role of MAP30 in inducing cell apoptosis, immunoblotting was carried out to detect the change of apoptosis-related proteins including PARP poly (ADP-ribose) polymerase (PARP- 1), Casepase3 and Cleaved-Caspase9. We found that PARP-1 and Caspase-3 were downregulated, whereas Cleaved-Caspase9 was up-regulated in HCC-LM3 cells treated with MAP30. CONCLUSION This study indicated that MAP30 has the potential to be a novel therapeutic agent for human hepatocellular carcinoma.
Collapse
Affiliation(s)
- Yiping Zhou
- School of Laboratory Medicine/Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu 610500, Sichuan, China
| | - Di Yang
- School of Laboratory Medicine/Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu 610500, Sichuan, China
| | - Zihao Qiang
- School of Laboratory Medicine/Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu 610500, Sichuan, China
| | - Yanfa Meng
- Key Laboratory of Bio-resources and Eco-environment Ministry of Education/Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, College of Life Science, Sichuan University, Chengdu 610064, China
| | - Ruigang Li
- Key Laboratory of Bio-resources and Eco-environment Ministry of Education/Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, College of Life Science, Sichuan University, Chengdu 610064, China
| | - Xiang Fan
- Key Laboratory of Bio-resources and Eco-environment Ministry of Education/Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, College of Life Science, Sichuan University, Chengdu 610064, China
| | - Wei Zhao
- School of Laboratory Medicine/Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu 610500, Sichuan, China
| | - Yao Meng
- School of Laboratory Medicine/Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu 610500, Sichuan, China
| |
Collapse
|
2
|
Yang YX, Wang XY, Lin T, Sun Y, Yu YC, Zhu ZH. Opportunities and challenges for ribosome-inactivating proteins in traditional Chinese medicine plants. Toxicon 2023; 234:107278. [PMID: 37683701 DOI: 10.1016/j.toxicon.2023.107278] [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: 06/14/2023] [Revised: 08/30/2023] [Accepted: 08/30/2023] [Indexed: 09/10/2023]
Abstract
Ribosome-inactivating proteins (RIPs) are a class of cytotoxic rRNA N-glycosylase, which widely exist in higher plants in different taxonomy, including many traditional Chinese medicinal materials and vegetables and fruits. In this paper, the traditional Chinese medicinal plants containing RIPs protein were sorted out, and their pharmacological effects and clinical applications were analyzed. Since many RIPs in traditional Chinese medicine plants exhibit antiviral and antitumor activities and show great clinical application potential, people's interest in these proteins is on the rise. This paper summarizes the possible mechanism of RIPs's anti-virus and anti-tumor effects, and discusses its potential problems and risks, laying a foundation for subsequent research on how to exert its anti-virus and anti-tumor effects.
Collapse
Affiliation(s)
- Yi-Xuan Yang
- School of Life Sciences, Zhejiang Chinese Medical University, No. 548 Binwen Road, Hangzhou, 310053, Zhejiang, China
| | - Xin-Yi Wang
- School of Life Sciences, Zhejiang Chinese Medical University, No. 548 Binwen Road, Hangzhou, 310053, Zhejiang, China
| | - Tong Lin
- School of Life Sciences, Zhejiang Chinese Medical University, No. 548 Binwen Road, Hangzhou, 310053, Zhejiang, China
| | - Yu Sun
- School of Life Sciences, Zhejiang Chinese Medical University, No. 548 Binwen Road, Hangzhou, 310053, Zhejiang, China
| | - Yi-Cheng Yu
- School of Life Sciences, Zhejiang Chinese Medical University, No. 548 Binwen Road, Hangzhou, 310053, Zhejiang, China
| | - Zhen-Hong Zhu
- School of Life Sciences, Zhejiang Chinese Medical University, No. 548 Binwen Road, Hangzhou, 310053, Zhejiang, China.
| |
Collapse
|
3
|
Bora AFM, Kouame KJEP, Li X, Liu L, Pan Y. New insights into the bioactive polysaccharides, proteins, and triterpenoids isolated from bitter melon (Momordica charantia) and their relevance for nutraceutical and food application: A review. Int J Biol Macromol 2023; 231:123173. [PMID: 36642359 DOI: 10.1016/j.ijbiomac.2023.123173] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 12/19/2022] [Accepted: 01/03/2023] [Indexed: 01/13/2023]
Abstract
The recent trend in infectious diseases and chronic disorders has dramatically increased consumers' interest in functional foods. As a result, the research of bioactive ingredients with potential for nutraceutical and food application has rapidly become a topic of interest. In this optic, the plant Momordica charantia (M. charantia) has recently attracted the most attention owing to its numerous biological properties including anti-diabetic, anti-obesity, anti-inflammatory, anti-cancers among others. However, the current literature on M. charantia has mainly been concerned with the plant extract while little is known on the specific bioactive compounds responsible for the plant's health benefits. Hence, the present review aims to provide a comprehensive overview of the recent research progress on bioactives isolated from M. charantia, focusing on polysaccharides, proteins, and triterpenoids. Thus, this review provides an up-to-date account of the different extraction methods used to isolate M. charantia bioactives. In addition, the structural features and biological properties are presented. Moreover, this review discusses the current and promising applications of M. charantia bioactives with relevance to the nutraceutical and food industries. The information provided in this review will serve as a theoretical basis and practical support for the formulation of products enriched with M. charantia bioactives.
Collapse
Affiliation(s)
- Awa Fanny Massounga Bora
- Food College, Northeast Agricultural University, No. 600 Changjiang St., Xiangfang Dist, 150030 Harbin, China; Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, No. 600 Changjiang St., Xiangfang Dist, 150030 Harbin, China
| | - Kouadio Jean Eric-Parfait Kouame
- Food College, Northeast Agricultural University, No. 600 Changjiang St., Xiangfang Dist, 150030 Harbin, China; Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, No. 600 Changjiang St., Xiangfang Dist, 150030 Harbin, China
| | - Xiaodong Li
- Food College, Northeast Agricultural University, No. 600 Changjiang St., Xiangfang Dist, 150030 Harbin, China; Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, No. 600 Changjiang St., Xiangfang Dist, 150030 Harbin, China.
| | - Lu Liu
- Food College, Northeast Agricultural University, No. 600 Changjiang St., Xiangfang Dist, 150030 Harbin, China; Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, No. 600 Changjiang St., Xiangfang Dist, 150030 Harbin, China
| | - Yue Pan
- Food College, Northeast Agricultural University, No. 600 Changjiang St., Xiangfang Dist, 150030 Harbin, China; Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, No. 600 Changjiang St., Xiangfang Dist, 150030 Harbin, China
| |
Collapse
|
4
|
Peng K, Deng N, Meng Y, He Q, Meng H, Luo T, Wei Y, Kang Y, Zhou X, Shen F. Alpha-Momorcharin Inhibits Proinflammatory Cytokine Expression by M1 Macrophages but Not Anti-Inflammatory Cytokine Expression by M2 Macrophages. J Inflamm Res 2022; 15:4853-4872. [PMID: 36042868 PMCID: PMC9420447 DOI: 10.2147/jir.s372306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 08/18/2022] [Indexed: 12/02/2022] Open
Abstract
Background Alpha-momorcharin (α-MMC) is a natural medicine derived from bitter melon and has been found to exert immunomodulatory effects. Our previous study indicated that α-MMC can regulate cytokine release from monocytes, but it remains unknown about its regulatory effect on different types of cytokines, such as inflammatory cytokines or anti-inflammatory cytokines. Methods LPS-induced M1-type macrophages model and IL-4-induced M2-type macrophages model were established, and the expression of proinflammatory cytokines and anti-inflammatory cytokines were assessed by ELISA after α-MMC was administered. Then, a LPS-induced acute pneumonia mouse model was established, the proinflammatory cytokines levels and inflammatory lesions in lung tissues were examined by ELISA or H&E staining. Furthermore, omics screening analysis and Western blotting verification were performed on TLR4 and JAK1-STAT6 signalling pathway-related proteins to elucidate the regulatory mechanism of α-MMC in those M1 macrophages and M2 macrophages. Results At a noncytotoxic dose of 0.3 μg/mL, α-MMC significantly inhibited the LPS-induced expression of inflammatory cytokines, such as TNF-α, IL-1β, IL-6, IL-8, MIP-1α and MCP-1, by M1 macrophages in a time-dependent manner, but α-MMC did not inhibit the IL-4-induced synthesis of anti-inflammatory cytokines, such as IL-10, IL-1RA, EGF, VEGF, TGF-β and CCL22, by M2 macrophages. Moreover, α-MMC also inhibited inflammatory cytokine expression in an LPS-induced acute pneumonia mouse model and alleviated inflammation in lung tissues. Furthermore, omics screening and Western blotting analysis confirmed that α-MMC inhibited TAK1/p-TAK1 and subsequently blocked the downstream MAPK and NF-κB pathways, thus inhibiting the LPS-induced inflammatory cytokine expression. Conclusion Our results reveal that α-MMC inhibits proinflammatory cytokine expression by M1 macrophages but not anti-inflammatory cytokine expression by M2 macrophages. The efficacy of α-MMC in selectively inhibiting proinflammatory cytokine expression renders it particularly suitable for the treatment of severe inflammation and autoimmune diseases characterized by cytokine storms.
Collapse
Affiliation(s)
- Kejun Peng
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, People's Republic of China
| | - Nianhua Deng
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, People's Republic of China
| | - Yao Meng
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, People's Republic of China
| | - Qianchuan He
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Hao Meng
- PKU-IDG/McGovern Institute for Brain Research, Peking-Tsinghua Center for Life Sciences, Peking University School of Life Sciences, Beijing, People's Republic of China
| | - Ting Luo
- Wuhan Corebiolab Co., Ltd, Wuhan, People's Republic of China
| | - Yanru Wei
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, People's Republic of China
| | - Yue Kang
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, People's Republic of China
| | - Xiaodong Zhou
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, People's Republic of China
| | - Fubing Shen
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, People's Republic of China
| |
Collapse
|
5
|
Cao QG, Guo Q, Bai J, Dong Y, Zhang XH, Hong WL. The apoptosis mechanisms of HepG2 cells induced by bitter melon seed. J Food Biochem 2021; 45:e13683. [PMID: 33844303 DOI: 10.1111/jfbc.13683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 02/02/2021] [Accepted: 02/02/2021] [Indexed: 11/30/2022]
Abstract
Liver cancer is one of the leading causes of cancer-related deaths in the world. Bitter melon seed (BMS) is well known for anti-inflammatory and anticancer properties. MicroRNA-421 (miR-421) is considered as a regulator of cancer initiation, tumor metastasis, and progression, interfering with transcription of the mRNAs responsible for the cancer pathogenesis. HepG2 cells were treated with BMS water extract (BMSW) for 24 hr, and the IC50 was 586.27 ± 0.07 µg/ml. The ROS, mitochondrial membrane potential, the protein expression, and the nuclear fragmentation after the treatment of BMSW were respectively detected. The increase of ROS resulted in the decrease of mitochondrial membrane potential, which induced the apoptosis of cells subsequently. BMSW inhibited the proliferation of HepG2 cells by blocking cell cycle in the S phase and influenced the nuclei and the expression of protein, leading to cellular laxity and apoptosis. The expression level of miR-421 in HepG2 was distinctly down-regulated by 13.74 fold with 600 µg/ml of BMSW. Comprehensive microarray and RT-PCR analysis identified six putative target genes of miR-421 (GADD45B, DUSP6, DUSP3, DUSP10, CASP3, and CAPN2). The relationships of DUSP6, CASP3, and miR-421 were further confirmed by miR-421 mimics/inhibitor transfection by RT-PCR and western blot. The CASP3 was identified as target gene of miR-421. BMSW induced the apoptosis of HepG2 cell by regulating miR-421 and CASP3. PRACTICAL APPLICATIONS: Hepatocellular carcinoma (HCC) is a malignant tumour with the fourth highest mortality rate in the world. Bitter melon seed (BMS) as edible and medical food has significant anticancer activity. Our study indicated the anticancer mechanisms of BMS and provided the scientific basis for the application of BMS in healthy or novel functional foods. BMS can be used as dietary supplements or nutritional fortifiers to improve the survival status of patients with liver cancer due to safety and effectiveness.
Collapse
Affiliation(s)
- Qing-Guo Cao
- Department of College of Tea and Food Science and Technology, Jiangsu Vocational College of Agriculture and Forestry, Zhenjiang, China
| | - Qin Guo
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Jie Bai
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Ying Dong
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Xiao-Hua Zhang
- Department of College of Tea and Food Science and Technology, Jiangsu Vocational College of Agriculture and Forestry, Zhenjiang, China
| | - Wen-Long Hong
- Department of College of Tea and Food Science and Technology, Jiangsu Vocational College of Agriculture and Forestry, Zhenjiang, China
| |
Collapse
|
6
|
Choudhary N, Lodha ML, Baranwal VK. The role of enzymatic activities of antiviral proteins from plants for action against plant pathogens. 3 Biotech 2020; 10:505. [PMID: 33184592 PMCID: PMC7642053 DOI: 10.1007/s13205-020-02495-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/19/2020] [Indexed: 11/25/2022] Open
Abstract
Antiviral proteins (AVPs) from plants possess multiple activities, such as N-glycosidase, RNase, DNase enzymatic activity, and induce pathogenesis-related proteins, salicylic acid, superoxide dismutase, peroxidase, and catalase. The N-glycosidase activity releases the adenine residues from sarcin/ricin (S/R) loop of large subunit of ribosomes and interfere the host protein synthesis process and this activity has been attributed for antiviral activity in plant. It has been shown that AVP binds directly to viral genome-linked protein of plant viruses and interfere with protein synthesis of virus. AVPs also possess the RNase and DNase like activity and may be targeting nucleic acid of viruses directly. Recently, the antifungal, antibacterial, and antiinsect properties of AVPs have also been demonstrated. Gene encoding for AVPs has been used for the development of transgenic resistant crops to a broad range of plant pathogens and insect pests. However, the cytotoxicity has been observed in transgenic crops using AVP gene in some cases which can be a limiting factor for its application in agriculture. In this review, we have reviewed various aspects of AVPs particularly their characteristics, possible mode of action and application.
Collapse
Affiliation(s)
- Nandlal Choudhary
- Amity Institute of Virology & Immunology, Amity University Uttar Pradesh, Noida, 201313 India
| | - M. L. Lodha
- Division of Biochemistry, Indian Agricultural Research Institute, Pusa, New Delhi, 110012 India
| | - V. K. Baranwal
- Division of Plant Pathology, Indian Agricultural Research Institute, Pusa, New Delhi, 110012 India
| |
Collapse
|
7
|
Sur S, Ray RB. Bitter Melon ( Momordica Charantia), a Nutraceutical Approach for Cancer Prevention and Therapy. Cancers (Basel) 2020; 12:E2064. [PMID: 32726914 PMCID: PMC7464160 DOI: 10.3390/cancers12082064] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 07/16/2020] [Accepted: 07/22/2020] [Indexed: 12/13/2022] Open
Abstract
Cancer is the second leading cause of death worldwide. Many dietary plant products show promising anticancer effects. Bitter melon or bitter gourd (Momordica charantia) is a nutrient-rich medicinal plant cultivated in tropical and subtropical regions of many countries. Traditionally, bitter melon is used as a folk medicine and contains many bioactive components including triterpenoids, triterpene glycoside, phenolic acids, flavonoids, lectins, sterols and proteins that show potential anticancer activity without significant side effects. The preventive and therapeutic effects of crude extract or isolated components are studied in cell line-based models and animal models of multiple types of cancer. In the present review, we summarize recent progress in testing the cancer preventive and therapeutic activity of bitter melon with a focus on underlying molecular mechanisms. The crude extract and its components prevent many types of cancers by enhancing reactive oxygen species generation; inhibiting cancer cell cycle, cell signaling, cancer stem cells, glucose and lipid metabolism, invasion, metastasis, hypoxia, and angiogenesis; inducing apoptosis and autophagy cell death, and enhancing the immune defense. Thus, bitter melon may serve as a promising cancer preventive and therapeutic agent.
Collapse
Affiliation(s)
- Subhayan Sur
- Department of Pathology, Saint Louis University School of Medicine, St. Louis, MO 63104, USA;
| | - Ratna B. Ray
- Department of Pathology, Saint Louis University School of Medicine, St. Louis, MO 63104, USA;
- Cancer Center, Saint Louis University School of Medicine, St. Louis, MO 63104, USA
| |
Collapse
|
8
|
Deng N, Sun Y, Liu M, He Q, Wang L, Zhang Y, Sun W, Lei N, Liu Y, Luo Y, Shen F. Alpha-momorcharin regulates cytokine expression and induces apoptosis in monocytes. Immunopharmacol Immunotoxicol 2019; 41:258-266. [DOI: 10.1080/08923973.2019.1610430] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Nianhua Deng
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, PR China
| | - Yun Sun
- Department of Gastroenterology, First Attached Hospital, Chengdu Medical College, Chengdu, PR China
| | - Mengling Liu
- School of Pharmacy, Chengdu Medical College, Chengdu, PR China
| | - Qianchuan He
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Ling Wang
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, PR China
| | - Yu Zhang
- School of Pharmacy, Chengdu Medical College, Chengdu, PR China
| | - Wenkui Sun
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, PR China
| | - Ning Lei
- Department of Chemical and Pharmaceutical Engineering, Chengdu University of Technology, Chengdu, PR China
| | - Yang Liu
- Department of Mathematics and Statistics, Wright State University, Dayton, OH, USA
| | - Yingxia Luo
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, PR China
| | - Fubing Shen
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, PR China
| |
Collapse
|
9
|
Matsunaga C, Okada Y, Nishimoto E. Ligand-Induced Conformational Changes near the Active Site Regulating Enzyme Activity of Momorcharins from Seeds of Bitter Gourd. J Fluoresc 2018; 29:231-240. [PMID: 30569384 DOI: 10.1007/s10895-018-2332-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 12/10/2018] [Indexed: 11/27/2022]
Abstract
It is reasonable to consider that Type I-ribosomal inactivation proteins (RIP) retain some specific affinity to harmful pathogens to complete the role as a bio-defense relating protein. In the present studies, it was shown that two Type I-RIPs, α- and β-momorcharins, maintained the abilities to bind with N-acetylglucosamine (NAG) to change the conformation around the active sites and to regulate their N-glycosidase activities. By the binding of NAG, the freedom of internal motion of Trp192 in α-momorcharin was increased 1.5 times near the active site and, on the other hand, the corresponding motion of Trp190 was limited 50% in β-momorcharin. The results in the fluorescence resonance excitation energy transfer experiments demonstrated that Trp-190 of β-momorcharin was kept away from Tyr-70 but Trp192 contrarily approached closer to the nearest neighboring Tyr residue consisting of the active center of α-momorcharin by the binding with NAG. These conformational changes near the active site close correlated with promotion and/or suppression of the N-glucosidase activities of β- and α-momorcharins.
Collapse
Affiliation(s)
- Chie Matsunaga
- Laboratory of Biophysical Chemistry, Faculty of Agriculture, Graduate School of Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Yuuki Okada
- Laboratory of Biophysical Chemistry, Faculty of Agriculture, Graduate School of Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Etsuko Nishimoto
- Laboratory of Biophysical Chemistry, Faculty of Agriculture, Graduate School of Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
| |
Collapse
|
10
|
Sun W, Sun J, Zhang H, Meng Y, Li L, Li G, Zhang X, Meng Y. Chemosynthesis and characterization of site-specific N-terminally PEGylated Alpha-momorcharin as apotential agent. Sci Rep 2018; 8:17729. [PMID: 30531997 PMCID: PMC6286350 DOI: 10.1038/s41598-018-35969-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 11/09/2018] [Indexed: 01/08/2023] Open
Abstract
Alpha-momorcharin (α-MC), a type I ribosome-inactivating protein (RIP) isolated from Momordica charantia seeds, has been extensively studied for its antitumor, antiviral and antifungal activities. However, as an exogenous protein, problems associated with short half-life and strong immunogenicity have limited its clinical application. Poly (ethylene glycol) (PEG), as a polyether compound, is a well established and efficient modifier to develop it as a potential agent. Nevertheless, conventional PEGylation is not site-controlled and the conjugates are often not homogenous due to the generation of multi-PEGylated derivatives. To obtain a homogenous mono-PEGylated α-MC, the PEGylation was carried out by coupling a 20 kDa mPEG-butyraldehyde (mPEG-ALD) with α-MC. The product was separated and purified by MacroCap SP chromatography. Results from SDS-PAGE and MALDI-TOF MS revealed that the PEGylated α-MC consisted of one molecule mPEG and α-MC. Edman degradation confirmed that the N-terminal residue of α-MC was successfully coupled with mPEG-ALD. The mono-PEGylated α-MC possessed an extremely similar secondary structure to native α-MC through spectral analyses. In addition, it also showed low immunogenicity by double immunodiffusion and preserved moderate antitumor activity to three kinds of tumor cell lines in vitro. Finally, trypsin resistance was also considerably improved.
Collapse
Affiliation(s)
- Wenkui Sun
- School of Laboratory Medicine/Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu, 610500, Sichuan, China
| | - Jinghui Sun
- School of Laboratory Medicine/Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu, 610500, Sichuan, China
| | - Haowen Zhang
- Department of Chemical and Biological Engineering, University at Buffalo, the State University of New York, Buffalo, New York, 14260, United States
| | - Yanfa Meng
- Key Laboratory of Bio-resources and Eco-environment Ministry of Education/Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, College of Life Science, Sichuan University, Chengdu, 610064, Sichuan, China
| | - Linli Li
- Key Laboratory of Bio-resources and Eco-environment Ministry of Education/Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, College of Life Science, Sichuan University, Chengdu, 610064, Sichuan, China
| | - Gangrui Li
- Key Laboratory of Bio-resources and Eco-environment Ministry of Education/Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, College of Life Science, Sichuan University, Chengdu, 610064, Sichuan, China
| | - Xu Zhang
- Department of Pharmaceutics, School of Pharmacy, Chengdu Medical College, Chengdu, 610500, Sichuan, China
| | - Yao Meng
- School of Laboratory Medicine/Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu, 610500, Sichuan, China.
- Department of Chemical and Biological Engineering, University at Buffalo, the State University of New York, Buffalo, New York, 14260, United States.
| |
Collapse
|
11
|
Saeed F, Afzaal M, Niaz B, Arshad MU, Tufail T, Hussain MB, Javed A. Bitter melon (Momordica charantia): a natural healthy vegetable. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2018. [DOI: 10.1080/10942912.2018.1446023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Farhan Saeed
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Afzaal
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Bushra Niaz
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Umair Arshad
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Tabussam Tufail
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Bilal Hussain
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Ahsan Javed
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| |
Collapse
|
12
|
Jiang Y, Miao J, Wang D, Zhou J, Liu B, Jiao F, Liang J, Wang Y, Fan C, Zhang Q. MAP30 promotes apoptosis of U251 and U87 cells by suppressing the LGR5 and Wnt/β-catenin signaling pathway, and enhancing Smac expression. Oncol Lett 2018; 15:5833-5840. [PMID: 29556310 DOI: 10.3892/ol.2018.8073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 11/16/2017] [Indexed: 12/15/2022] Open
Abstract
Significant antitumor activity of Momordica anti-human immunodeficiency virus protein of 30 kDa (MAP30) purified from Momordica charantia has been the subject of previous research. However, the effective mechanism of MAP30 on malignant glioma cells has not yet been clarified. The aim of the present study was to investigate the effects and mechanism of MAP30 on U87 and U251 cell lines. A Cell Counting Kit-8 assay, wound healing assay and Transwell assay were used to detect the effects on U87 and U251 cells treated with different concentrations of MAP30 (0.5, 1, 2, 4, 8 and 16 µM) over different periods of time. Proliferation, migration and invasion of each cell line were markedly inhibited by MAP30 in a dose- and time-dependent manner. Flow cytometry and fluorescence staining demonstrated that apoptosis increased and the cell cycle was arrested in S-phase in the two investigated cell lines following MAP30 treatment. Western blot analysis demonstrated that leucine-rich-repeat-containing G-protein-coupled receptor 5 (LGR5) expression and key proteins in the Wnt/β-catenin signaling pathway were apparently decreased, whereas second mitochondria-derived activator of caspase (Smac) protein expression significantly increased with MAP30 treatment in the same manner. These results suggest that MAP30 markedly induces apoptosis in U87 and U251 cell lines by suppressing LGR5 and the Wnt/β-catenin signaling pathway, and enhancing Smac expression in a dose- and time-dependent manner.
Collapse
Affiliation(s)
- Yilin Jiang
- Department of Neurosurgery, Peking University People's Hospital, Peking University, Beijing 100044, P.R. China
| | - Junjie Miao
- Department of Neurosurgery, Peking University People's Hospital, Peking University, Beijing 100044, P.R. China
| | - Dongliang Wang
- Department of Neurosurgery, Peking University People's Hospital, Peking University, Beijing 100044, P.R. China
| | - Jingru Zhou
- Department of Neurosurgery, Peking University People's Hospital, Peking University, Beijing 100044, P.R. China
| | - Bo Liu
- Department of Neurosurgery, Peking University People's Hospital, Peking University, Beijing 100044, P.R. China
| | - Feng Jiao
- Department of Neurosurgery, Peking University People's Hospital, Peking University, Beijing 100044, P.R. China
| | - Jiangfeng Liang
- Department of Neurosurgery, Peking University International Hospital, Beijing 102206, P.R. China
| | - Yangshuo Wang
- Department of Neurosurgery, Peking University People's Hospital, Peking University, Beijing 100044, P.R. China
| | - Cungang Fan
- Department of Neurosurgery, Peking University People's Hospital, Peking University, Beijing 100044, P.R. China
| | - Qingjun Zhang
- Department of Neurosurgery, Peking University People's Hospital, Peking University, Beijing 100044, P.R. China
| |
Collapse
|
13
|
Zhu F, Zhou YK, Ji ZL, Chen XR. The Plant Ribosome-Inactivating Proteins Play Important Roles in Defense against Pathogens and Insect Pest Attacks. FRONTIERS IN PLANT SCIENCE 2018; 9:146. [PMID: 29479367 PMCID: PMC5811460 DOI: 10.3389/fpls.2018.00146] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 01/25/2018] [Indexed: 05/20/2023]
Abstract
Ribosome-inactivating proteins (RIPs) are toxic N-glycosidases that depurinate eukaryotic and prokaryotic rRNAs, thereby arresting protein synthesis during translation. RIPs are widely found in various plant species and within different tissues. It is demonstrated in vitro and in transgenic plants that RIPs have been connected to defense by antifungal, antibacterial, antiviral, and insecticidal activities. However, the mechanism of these effects is still not completely clear. There are a number of reviews of RIPs. However, there are no reviews on the biological functions of RIPs in defense against pathogens and insect pests. Therefore, in this report, we focused on the effect of RIPs from plants in defense against pathogens and insect pest attacks. First, we summarize the three different types of RIPs based on their physical properties. RIPs are generally distributed in plants. Then, we discuss the distribution of RIPs that are found in various plant species and in fungi, bacteria, algae, and animals. Various RIPs have shown unique bioactive properties including antibacterial, antifungal, antiviral, and insecticidal activity. Finally, we divided the discussion into the biological roles of RIPs in defense against bacteria, fungi, viruses, and insects. This review is focused on the role of plant RIPs in defense against bacteria, fungi, viruses, and insect attacks. The role of plant RIPs in defense against pathogens and insects is being comprehended currently. Future study utilizing transgenic technology approaches to study the mechanisms of RIPs will undoubtedly generate a better comprehending of the role of plant RIPs in defense against pathogens and insects. Discovering additional crosstalk mechanisms between RIPs and phytohormones or reactive oxygen species (ROS) against pathogen and insect infections will be a significant subject in the field of biotic stress study. These studies are helpful in revealing significance of genetic control that can be beneficial to engineer crops tolerance to biotic stress.
Collapse
|
14
|
Tan MJ, Cao XW, Li PF, Zhai YZ, Zhou Y, Liu YJ, Zhao J, Wang FJ. Effectively enhancing cytotoxic and apoptotic effects of alpha-momorcharin by integrating a heparin-binding peptide. Biotechnol Appl Biochem 2017; 64:918-926. [PMID: 28090686 DOI: 10.1002/bab.1553] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 01/12/2017] [Indexed: 01/10/2023]
Abstract
Alpha-momorcharin (α-MMC), a type I ribosome-inactivating protein, has attracted a great deal of attention because of its antitumor activity. However, the cytotoxicity of α-MMC is limited due to insufficient cellular internalization in cancer cells. To enhance the cytotoxicity of α-MMC, a heparin-binding domain derived from heparin-binding epidermal growth factor (named heparin-binding peptide [HBP]) was used as a cell-penetrating peptide and fused to the C-terminus of α-MMC. This novel α-MMC-HBP fusion protein was expressed and purified with a Ni2+ -resin. The N-glycosidase activity and DNase activity assay indicated that the introduction of HBP did not interfere with the intrinsic bioactivities of α-MMC. HBP was able to efficiently carry α-MMC into the tested cancer cells and significantly enhance the cytotoxic effects of α-MMC in a dose-dependent manner. This enhanced cytotoxic ability occurred due to the higher level of cell apoptosis induced by α-MMC-HBP, which was demonstrated in western blot analysis in which α-MMC-HBP triggered caspase 8, caspase 9, casapase 3, and PARP more intensely than α-MMC alone. α-MMC-HBP led to an upregulation of cleaved PARP and an increase in the Bax/Bcl-2 ratio. Our study provided a new practical way to greatly improve the antitumor activity of α-MMC, which could significantly expand the pharmaceutical applications of α-MMC.
Collapse
Affiliation(s)
- Meng-Jie Tan
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, People's Republic of China
| | - Xue-Wei Cao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, People's Republic of China
| | - Peng-Fei Li
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, People's Republic of China
| | - Yi-Zhou Zhai
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, People's Republic of China
| | - Yu Zhou
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, People's Republic of China
| | - Ye-Jun Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, People's Republic of China
| | - Jian Zhao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, People's Republic of China
| | - Fu-Jun Wang
- Zhejiang Reachall Pharmaceutical Co. Ltd., Zhejiang, People's Republic of China.,Institute of Chinese Materia Medica, Shanghai University of Chinese Traditional Medicine, Shanghai, People's Republic of China
| |
Collapse
|
15
|
Mono-PEGylation of Alpha-MMC and MAP30 from Momordica charantia L.: Production, Identification and Anti-Tumor Activity. Molecules 2016; 21:molecules21111457. [PMID: 27809255 PMCID: PMC6274223 DOI: 10.3390/molecules21111457] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 10/29/2016] [Accepted: 10/29/2016] [Indexed: 11/17/2022] Open
Abstract
PEGylation is a well-established and effective strategy to decrease immunogenicity, which can increase the stability and in vivo half-life time. However, the generation of multi-site modified products is inevitable due to the lysine chemistry, which will bring difficulties in subsequent research, such as purification and quantification. Site-specific modification by mPEG-succinimidyl carbonate (mPEG-SC) is a widely used method for N-terminal conjugation. In this study, we used it for site-directed modification on two ribosome-inactivating proteins (RIPs), alpha-momorcharin (α-MMC) and momordica anti-HIV protein (MAP30), from Momordica charantia L. According to the optimization of previous modification conditions, we compared Macro-Cap SP with SP-Sepharose FF chromatography for separating the final mPEGylated RIPs. Two kinds of methods both can obtain homogenous mPEGylated RIPs which were identified by sodium dodecylsulphate polyacrylamide gel electrophoresis (SDS-PAGE), isoelectric focusing electrophoresis (IEF), and matrix-assisted laser desorption ionization-time of flight/time of flight (MALDI-TOF/TOF) analysis. We also used iodine staining method to detect the amount of unmodified PEG. Furthermore, the inhibition activity of both mPEGylated and non-PEGylated RIPs against human lung adenocarcinoma epithelial A549 cells was detected. All of the results suggested that the mPEGylated α-MMC/MAP30 might be potentially developed as new anti-tumor drugs.
Collapse
|
16
|
Ajji PK, Walder K, Puri M. Functional Analysis of a Type-I Ribosome Inactivating Protein Balsamin from Momordica balsamina with Anti-Microbial and DNase Activity. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2016; 71:265-71. [PMID: 27319013 DOI: 10.1007/s11130-016-0555-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Ribosome inactivating proteins (RIPs) have received considerable attention in biomedical research because of their unique activities towards tumor and virus-infected cells. We extracted balsamin, a type-I RIP, from Momordica balsamina. In the present study, a detailed investigation on DNase activity, antioxidant capacity and antibacterial activity was conducted using purified balsamin. DNase-like activity of balsamin towards plasmid DNA was pH, incubation time and temperature dependent. Moreover, the presence of Mg(2+) (10-50 mM) influenced the DNA cleavage activity. Balsamin also demonstrated reducing power and a capacity to scavenge free radicals in a dose dependent manner. Furthermore, the protein exhibited antibacterial activity against Staphylococcus aureus, Salmonella enterica, Staphylococcus epidermidis and Escherichia coli, which suggests potential utility of balsamin as a nutraceutical.
Collapse
Affiliation(s)
- Parminder Kaur Ajji
- Bioprocessing Laboratory, Centre for Chemistry and Biotechnology, School of Life and Environment Sciences, Deakin University, 75 Pigdons Road, Waurn Ponds, Geelong, 3220, Victoria, Australia
- Metabolic Research Unit, School of Medicine, Deakin University, Waurn Ponds, 75 Pigdons Road, Locked Bag 20000, Geelong, VIC, 3220, Australia
| | - Ken Walder
- Metabolic Research Unit, School of Medicine, Deakin University, Waurn Ponds, 75 Pigdons Road, Locked Bag 20000, Geelong, VIC, 3220, Australia
| | - Munish Puri
- Bioprocessing Laboratory, Centre for Chemistry and Biotechnology, School of Life and Environment Sciences, Deakin University, 75 Pigdons Road, Waurn Ponds, Geelong, 3220, Victoria, Australia.
| |
Collapse
|
17
|
Wang L, Shen F, Zhang M, He Q, Zhao H, Yu X, Yang S, Liu Y, Deng N, Zheng J, Zhu L, Liu X. Cytotoxicity mechanism of α-MMC in normal liver cells through LRP1 mediated endocytosis and JNK activation. Toxicology 2016; 357-358:33-43. [PMID: 27262837 DOI: 10.1016/j.tox.2016.05.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 05/30/2016] [Accepted: 05/30/2016] [Indexed: 02/07/2023]
Abstract
Alpha-momorcharin (α-MMC), a type I ribosome-inactivating protein isolated from Momordica charantia, is a potential drug candidate with strong anti-tumor activity. However, α-MMC has a severe hepatotoxicity when applied in vivo, which may greatly hinders its use in clinic in the future. The biological mechanism of hepatotoxicity induced by α-MMC is largely unknown, especially the mechanism by which α-MMC enters the hepatocytes. In this study, we investigated α-MMC-induced cytotoxicity in normal liver L02 cell line as well as the mechanism underlying it. As expected, α-MMC is more toxic in L02 cells than in various normal cells from other organs. The cytotoxic effect of α-MMC on L02 cells is found to be mediated through cell apoptosis as detected by flow cytometry and fluorescence microscopy. Importantly, α-MMC was shown to bind to a specific receptor on cell membrane, as the density of the cell membrane receptor is closely related to both the amount of α-MMC endocytosed and the cytotoxicity in different cell lines. By using LRP1 competitive inhibitor α2-M or siRNA targeting LRP1, we further identified that LRP1 protein served as the membrane receptor for α-MMC. Both α2-M and siRNA targeting LRP1 can significantly inhibit α-MMC's endocytosis as well as its cytotoxicity in L02 cells. In addition, it was found that α-MMC can activate the JNK signalling pathways via LRP1 in L02 cells. As JNK activation often leads to cell apoptosis, the activation of JNK may play an important role in α-MMC-induced cytotoxicity. To our knowledge, this is the first report showing that LRP1 mediates the cytotoxicity of α-MMC through (1) endocytosis and induced apoptosis and (2) the activation of the JNK pathway. Our findings shed light on the fundamental mechanism of hepatotoxicity of α-MMC and offer reference to understand its mechanism of lymphocytotoxicity and neurotoxicity.
Collapse
Affiliation(s)
- Ling Wang
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu 610500, PR China
| | - Fubing Shen
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu 610500, PR China.
| | - Min Zhang
- Isotope Lab, College of Preclinical and Forensic Medicine, Sichuan University, Chengdu, PR China
| | - Qianchuan He
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Hui Zhao
- Department of Cardiology (II), Xiangyang Central Hospital, Hubei Province, Xiangyang 441021, PR China
| | - Xiaoping Yu
- Department of Public Health, Chengdu Medical College, Chengdu 610500, PR China
| | - Shuxia Yang
- Center of Science and Research, Chengdu Medical College, Chengdu 610500, PR China
| | - Yang Liu
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Nianhua Deng
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu 610500, PR China
| | - Juecun Zheng
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu 610500, PR China
| | - Lixia Zhu
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu 610500, PR China
| | - Xiaolan Liu
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu 610500, PR China
| |
Collapse
|
18
|
Zeng M, Zheng M, Lu D, Wang J, Jiang W, Sha O. Anti-tumor activities and apoptotic mechanism of ribosome-inactivating proteins. CHINESE JOURNAL OF CANCER 2015; 34:325-34. [PMID: 26184404 PMCID: PMC4593346 DOI: 10.1186/s40880-015-0030-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 04/14/2015] [Indexed: 01/22/2023]
Abstract
Ribosome-inactivating proteins (RIPs) belong to a family of enzymes that attack eukaryotic ribosomes and potently inhibit cellular protein synthesis. RIPs possess several biomedical properties, including anti-viral and anti-tumor activities. Multiple RIPs are known to inhibit tumor cell proliferation through inducing apoptosis in a variety of cancers, such as breast cancer, leukemia/lymphoma, and hepatoma. This review focuses on the anti-tumor activities of RIPs and their apoptotic effects through three closely related pathways: mitochondrial, death receptor, and endoplasmic reticulum pathways.
Collapse
Affiliation(s)
- Meiqi Zeng
- School of Medicine, Shenzhen University Health Science Center, Shenzhen, 518060, Guangdong, People's Republic of China.
| | - Manyin Zheng
- School of Medicine, Shenzhen University Health Science Center, Shenzhen, 518060, Guangdong, People's Republic of China.
| | - Desheng Lu
- School of Medicine, Shenzhen University Health Science Center, Shenzhen, 518060, Guangdong, People's Republic of China.
| | - Jun Wang
- School of Medicine, Shenzhen University Health Science Center, Shenzhen, 518060, Guangdong, People's Republic of China.
| | - Wenqi Jiang
- School of Medicine, Shenzhen University Health Science Center, Shenzhen, 518060, Guangdong, People's Republic of China.
- School of Medicine, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China.
- State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, 510060, People's Republic of China.
- Collaborative Innovation Center of Cancer Medicine, Guangzhou, 510060, Guangdong, People's Republic of China.
| | - Ou Sha
- School of Medicine, Shenzhen University Health Science Center, Shenzhen, 518060, Guangdong, People's Republic of China.
| |
Collapse
|
19
|
Cao D, Sun Y, Wang L, He Q, Zheng J, Deng F, Deng S, Chang S, Yu X, Li M, Meng Y, Jin J, Shen F. Alpha-momorcharin (α-MMC) exerts effective anti-human breast tumor activities but has a narrow therapeutic window in vivo. Fitoterapia 2014; 100:139-49. [PMID: 25447153 DOI: 10.1016/j.fitote.2014.11.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 11/05/2014] [Accepted: 11/07/2014] [Indexed: 11/17/2022]
Abstract
Alpha-momorcharin (α-MMC), a ribosome inactivating protein (RIP) extracted from the seeds of Momordica charantia, exerts anti-tumor, antiviral, and anti-fungal activities. However, α-MMC has an obvious toxicity that limits its clinical application. We examined the effect of α-MMC on the inhibition of human breast cancer and assessed its general toxicity to find the therapeutic window in vivo for its potential clinical use. It was purified using column chromatography, and then injected into the xenograft nude mouse model induced by MDA-MB-231 and MCF-7. The anti-tumor efficacy was evaluated with T/C%. Next, the α-MMC was injected at a series of doses to Balb/C mice to assess its general toxicity. The MTT assay, the apoptosis test, and the cell cycle inhibition of α-MMC in human breast cancer cells were performed. In the xenografted tumors induced by MDA-MB-231 and MCF-7, α-MMC exerted an obvious inhibition effects on tumor growth at the dosage of 1.2mg/kg and 0.8 mg/kg. For in vivo toxicity experiments of α-MMC in Balb/C mice, the minimal toxic dose of α-MMC was 1.2mg/kg. Alpha-MMC induced apoptosis by increasing caspase3 activities, and the cell cycle was arrested at the G0/G1 or G2/M phases. The measurements of IC50 were 15.07 μg/mL, 33.66 μg/mL, 42.94 μg/mL for MDA-MB-231, MCF-7 and MDA-MB-453 respectively. Alpha-MMC exhibits anti-tumor effects in human breast cancer in vivo and in vitro. It inhibits breast cancer cells through the inhibition of tumor growth and induction of cell apoptosis. However, due to its obvious toxicity, α-MMC has a relatively narrow therapeutic window in vivo.
Collapse
Affiliation(s)
- Dongliang Cao
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu 610500, PR China
| | - Yun Sun
- Department of Gastroenterology, The First Attached Hospital of Chengdu Medical College, Chengdu Medical College, Chengdu 610500, PR China
| | - Ling Wang
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu 610500, PR China
| | - Qianchuan He
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Juecun Zheng
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu 610500, PR China
| | - Fei Deng
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu 610500, PR China
| | - Shanshan Deng
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu 610500, PR China
| | - ShuChing Chang
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - XiaoPing Yu
- Center of Science and Research, Chengdu Medical College, Chengdu 610083, PR China
| | - Minhui Li
- Center of Science and Research, Chengdu Medical College, Chengdu 610083, PR China
| | - Yao Meng
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu 610500, PR China
| | - Jiagui Jin
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu 610500, PR China
| | - Fubing Shen
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu 610500, PR China.
| |
Collapse
|