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Wang J, Wu H, Zhao Q, Zou Y, Ding D, Yin H, Xu H. Aggregation-Induced Emission Photosensitizer Synergizes Photodynamic Therapy and the Inhibition of the NF-κB Signaling Pathway to Overcome Hypoxia in Breast Cancer. ACS APPLIED MATERIALS & INTERFACES 2022; 14:29613-29625. [PMID: 35729075 DOI: 10.1021/acsami.2c06063] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Triple-negative breast cancer (TNBC) is one of the most aggressive subtypes of breast cancer, and TNBC patients often develop resistance to endocrine or molecular targeted therapy. Thus, a search for effective treatments is urgently required. Photodynamic therapy (PDT) has been verified to be a successful therapy for cancer. However, this treatment is oxygen-consuming, thus considerably limiting the PDT outcomes. The present study introduced a multistage drug delivery system to alleviate hypoxia and enhance PDT efficiency. Specifically, aggregation-induced emission luminogen (AIEgen) TPE-Py was first introduced to achieve PDT properties, and natural naphthohydroquinone dimer Rubioncolin C (RC), a blocker of mitochondria-associated oxidative phosphorylation (OXPHOS) and an NF-κB inhibitor, was applied to suppress the O2 consumption of OXPHOS and mitigate hypoxia thereafter. Enhanced PDT efficiency was validated by in vitro and in vivo TNBC models. In terms of the mechanism, AIEgen-based PDT synergized with RC could induce a fatal burst of reactive oxygen species (ROS) and ROS-mediated apoptosis. Moreover, this combination promoted the effectiveness of PDT by inhibiting the NF-κB signaling pathway. All of these results demonstrated that the administration system not only achieved a synergistic anti-TNBC effect but also expanded the clinical application of AIEgen-based PDT by overcoming hypoxia and inhibiting the NF-κB signaling pathway.
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Affiliation(s)
- Jia Wang
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, P. R. China
| | - Haisi Wu
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, P. R. China
| | - Qianqian Zhao
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, P. R. China
| | - Yifan Zou
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing 210029, P. R. China
| | - Dan Ding
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education and College of Life Sciences, Nankai University, Tianjin 300071, P. R. China
| | - Haitao Yin
- Department of Radiotherapy, Xuzhou Central Hospital, Xuzhou 221009, P. R. China
| | - Huae Xu
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, P. R. China
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Feng L, Zhang AX, Li L, Zhang XJ, Wang Z, Tan NH. Diversity of cultivable endophytic fungi in two Rubia plants and their potential for production of anti-tumour Rubiaceae-type cyclopeptides. Lett Appl Microbiol 2021; 73:759-769. [PMID: 34591984 DOI: 10.1111/lam.13571] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/28/2021] [Accepted: 09/20/2021] [Indexed: 01/19/2023]
Abstract
Rubia plants are one of the most important plant resources possessing significant commercial and medicinal values. Plant endophytes could benefit their host plants in different ways. Rubiaceae-type cyclopeptides (RAs), mainly isolated from Rubia plants, have attracted considerable attentions for their distinctive bicyclic structures and significant antitumor activities, but their contents in plants are low. The aim of this study is to investigate the diversity of endophytic fungi in Rubia plants and their potential for production of RAs. In this work, 143 endophytic fungi isolates were obtained from two Rubia plants. Phylogenetic analysis was performed based on the ITS rDNA sequences, and the isolates were classified into 29 genera. Among them, four endophytic fungal strains were found to produce anti-tumour RAs by LC-MS/MS analysis. This work successfully provides valuable knowledges of endophytic fungi microbiome in Rubia plants for agricultural and industrial applications, and exploits a new environmental-friendly resource of RAs.
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Affiliation(s)
- L Feng
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China
| | - A X Zhang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China
| | - L Li
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China
| | - X J Zhang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Z Wang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China
| | - N H Tan
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China
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Liu M, Lai Z, Zhu L, Ding X, Tong X, Wang Z, Bi Q, Tan N. Novel amorphous solid dispersion based on natural deep eutectic solvent for enhancing delivery of anti-tumor RA-XII by oral administration in rats. Eur J Pharm Sci 2021; 166:105931. [PMID: 34256100 DOI: 10.1016/j.ejps.2021.105931] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 02/08/2023]
Abstract
At present, oral chemotherapy showing the advantages of non-invasiveness, convenience, and high patient compliance, is gradually replacing traditional intravenous chemotherapy to treat patients with cancer. RA-XII, a unique natural cyclopeptide, exhibits various biological activities, such as anti-tumor, anti-angiogenic, and anti-metastatic activities. Designing an orally available formulation of RA-XII is of great importance in the development of clinically useful anticancer agents. However, RA-XII shows low oral bioavailability in rats due to its poor solubility and low permeability. To overcome these limitations, in this work, a natural deep eutectic solvent (NADES) was designed to efficiently deliver RA-XII by oral administration. A novel NADES composed of betaine and mandelic acid in the molar ratio of 1:1 (Bet-Man NADES) was successfully prepared based on a binary phase diagram of Bet and Man. Acute toxicity studies indicated that Bet-Man NADES was well tolerated with acceptable toxicity. In Bet-Man NADES solutions, the solubility of RA-XII was increased by up to 17.54-fold, and the diffusion and permeability of RA-XII carried out in a Franz cell was also significantly improved 10.35 times. In terms of biopharmaceutical classification this is translated into a change for RA-XII from class IV to class II systems. More importantly, Bet-Man NADES was transferred into the solid formulation by the inclusion of a polymer, and amorphous solid dispersions based on Bet-Man NADES (PVP K30/NADES/RA-XII, ASDs) were successfully prepared to improve uniformity, apparent solubility, dissolution, and cytotoxicity in vitro. Consequently, the oral bioavailability of RA-XII in NADES solutions and ASDs was enhanced by approximately 11.58 and 7.56 times compared with that of pure RA-XII in 0.5% CMCNa. Thus, it can be seen that a natural deep eutectic solvent and its modified amorphous solid dispersions are appropriate novel strategies for improving dissolution rate and bioavailability of poor soluble natural products such as RA-XII.
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Affiliation(s)
- Mingyu Liu
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Zhixing Lai
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Lijun Zhu
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Xin Ding
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Xiyang Tong
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Zhen Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China.
| | - Qirui Bi
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China.
| | - Ninghua Tan
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China.
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Zhang JN, Xia YX, Zhang HJ. Natural Cyclopeptides as Anticancer Agents in the Last 20 Years. Int J Mol Sci 2021; 22:3973. [PMID: 33921480 PMCID: PMC8068844 DOI: 10.3390/ijms22083973] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/06/2021] [Accepted: 04/09/2021] [Indexed: 12/24/2022] Open
Abstract
Cyclopeptides or cyclic peptides are polypeptides formed by ring closing of terminal amino acids. A large number of natural cyclopeptides have been reported to be highly effective against different cancer cells, some of which are renowned for their clinical uses. Compared to linear peptides, cyclopeptides have absolute advantages of structural rigidity, biochemical stability, binding affinity as well as membrane permeability, which contribute greatly to their anticancer potency. Therefore, the discovery and development of natural cyclopeptides as anticancer agents remains attractive to academic researchers and pharmaceutical companies. Herein, we provide an overview of anticancer cyclopeptides that were discovered in the past 20 years. The present review mainly focuses on the anticancer efficacies, mechanisms of action and chemical structures of cyclopeptides with natural origins. Additionally, studies of the structure-activity relationship, total synthetic strategies as well as bioactivities of natural cyclopeptides are also included in this article. In conclusion, due to their characteristic structural features, natural cyclopeptides have great potential to be developed as anticancer agents. Indeed, they can also serve as excellent scaffolds for the synthesis of novel derivatives for combating cancerous pathologies.
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Affiliation(s)
| | | | - Hong-Jie Zhang
- Teaching and Research Division, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China; (J.-N.Z.); (Y.-X.X.)
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Wang J, Wang J, Li L, Feng L, Wang YR, Wang Z, Tan NH. RA-XII, a bicyclic hexapeptidic glucoside isolated from Rubia yunnanensis Diels, exerts antitumor activity by inhibiting protective autophagy and activating Akt-mTOR pathway in colorectal cancer cells. JOURNAL OF ETHNOPHARMACOLOGY 2021; 266:113438. [PMID: 33017635 DOI: 10.1016/j.jep.2020.113438] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/22/2020] [Accepted: 09/27/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The roots of Rubia yunnanensis Diels (Chinese name 'Xiao-Hong-Shen'), a traditional Chinese medicine native to Yunnan province (China), have a long history of use for treating several diseases, such as tuberculosis, rheumatism and cancers. A bicyclic hexapeptidic glucoside named RA-XII was isolated from R. yunnanensis, which has been reported to exert anti-inflammatory and antitumor activities. AIM OF THE STUDY This study was designed to investigate the antitumor activity and potential mechanism of RA-XII on colorectal cancer (CRC) cell lines. MATERIALS AND METHODS Sulforhodamine B assay, clonogenic assay and cell cycle analysis were conducted to assess the anti-proliferative activity of RA-XII on CRC cells. GFP-LC3B plasmid transfection, MDC and AO staining assays, cathepsin activity assay, and siRNAs against several genes were used to investigate the effect of RA-XII on autophagy. Western blotting was used to examine the expression levels of proteins associated with cell cycle arrest, apoptosis and autophagy. Human CRC xenograft-bearing BALB/c nude mice were used to evaluate the antitumor effect of RA-XII in vivo. RESULTS RA-XII showed favorable antineoplastic activity in SW620 and HT29 cells in vitro and in vivo. RA-XII did not induce apoptosis indicated by no obvious changes on mitochondrial membrane potential and apoptosis-related marker proteins in SW620 or HT29 cells. Treatment of RA-XII inhibited the formation of autophagosomes, which is implied by the GFP-LC3 fluorescent dots, MDC-stained autophagic vesicles and LC3 protein expression. It was indicated that RA-XII suppressed autophagy by regulating several signaling pathways including mTOR and NF-κB pathways. Pharmacological or genetic inhibition of autophagy could enhance the cytotoxicity of RA-XII while autophagy inducer could rescue RA-XII-induced cell death. Besides, RA-XII could increase the susceptibility of CRC cells to bortezomib. CONCLUSION Our study demonstrated that RA-XII exerted antitumor activity independent of apoptosis, and suppressed protective autophagy by regulating mTOR and NF-κB pathways in SW620 and HT29 cell lines, which suggested that RA-XII is a key active ingredient for the cancer treatment of Rubia yunnanensis and possesses a promising prospect as an autophagy inhibitor for CRC therapy.
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Affiliation(s)
- Jing Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People's Republic of China.
| | - Jia Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People's Republic of China.
| | - Ling Li
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People's Republic of China.
| | - Li Feng
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People's Republic of China.
| | - Yu-Rong Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People's Republic of China.
| | - Zhe Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People's Republic of China.
| | - Ning-Hua Tan
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, People's Republic of China.
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Balachandran P, Ibrahim MA, Zhang J, Wang M, Pasco DS, Muhammad I. Crosstalk of Cancer Signaling Pathways by Cyclic Hexapeptides and Anthraquinones from Rubia cordifolia. Molecules 2021; 26:molecules26030735. [PMID: 33572569 PMCID: PMC7866972 DOI: 10.3390/molecules26030735] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 01/25/2021] [Accepted: 01/28/2021] [Indexed: 12/03/2022] Open
Abstract
The anticancer activities of Rubia cordifolia and its constituents have been reported earlier, but their influence on the crosstalk of complex cancer-related signaling metabolic pathways (i.e., transcription factors; TF) has not yet been fully investigated. In this study, R. cordifolia root extract was subjected to the cancer signaling assay based bioactivity-guided fractionation, which yielded the following compounds viz., three anthraquinones, namely alizarin (1), purpurin (2), and emodin (3); two lignans, namely eudesmin (4) and compound 5; and two cyclic hexapeptides, namely deoxybouvardin RA-V (6), and a mixture of 6+9 (RA-XXI). The structures of the isolated compounds were determined by NMR spectroscopy and HRESIMS. The isolated compounds 1, 2, 3, 6, and a mixture of 6+9 were tested against a panel of luciferase reporter genes that assesses the activity of a wide-range of cancer-related signaling pathways. In addition, reference anthraquinones viz., chrysophanol (11), danthron (12), quinizarin (13), aloe-emodin (14), and α-lapachone (15) were also tested. Among the tested compounds, the cyclic hexapeptide 6 was found to be very active against several signaling pathways, notably Wnt, Myc, and Notch with IC50 values of 50, 75, and 93 ng/mL, respectively. Whereas, the anthraquinones exhibited very mild or no inhibition against these signaling pathways. Compound 6 being the most active, we tested it for stability in simulated intestinal (SIF) and gastric fluids (SGF), since the stability in biological fluid is a key short-coming of cyclic hexapeptides. The anticancer activity of 6 was found to remain unchanged before and after the treatment of simulated gastric/intestinal fluids, indicating that RA-V was stable. As a result, it could be bioavailable when orally used in therapeutics and possibly a drug candidate for cancer treatment. The mechanism for the preferential inhibition of these pathways and the possible crosstalk effect with other previously reported signaling pathways has been discussed.
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Affiliation(s)
- Premalatha Balachandran
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, Oxford, MS 38677, USA; (J.Z.); (M.W.); (D.S.P.)
- Correspondence: (P.B.); (M.A.I.); (I.M.); Tel.: +1-662-915-3463 (P.B.); +1-662-915-1147 (M.A.I.); +1-662-915-1051 (I.M.)
| | - Mohamed Ali Ibrahim
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, Oxford, MS 38677, USA; (J.Z.); (M.W.); (D.S.P.)
- Correspondence: (P.B.); (M.A.I.); (I.M.); Tel.: +1-662-915-3463 (P.B.); +1-662-915-1147 (M.A.I.); +1-662-915-1051 (I.M.)
| | - Jin Zhang
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, Oxford, MS 38677, USA; (J.Z.); (M.W.); (D.S.P.)
| | - Mei Wang
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, Oxford, MS 38677, USA; (J.Z.); (M.W.); (D.S.P.)
- Natural Products Utilization Research Unit, Agricultural Research Service, United States Department of Agriculture, Oxford, MS 38677, USA
| | - David S. Pasco
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, Oxford, MS 38677, USA; (J.Z.); (M.W.); (D.S.P.)
| | - Ilias Muhammad
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, Oxford, MS 38677, USA; (J.Z.); (M.W.); (D.S.P.)
- Correspondence: (P.B.); (M.A.I.); (I.M.); Tel.: +1-662-915-3463 (P.B.); +1-662-915-1147 (M.A.I.); +1-662-915-1051 (I.M.)
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Abstract
Protein-RNA interactions have crucial roles in various cellular activities, which, when dysregulated, can lead to a range of human diseases. The identification of small molecules that target the interaction between RNA-binding proteins (RBPs) and RNA is progressing rapidly and represents a novel strategy for the discovery of chemical probes that facilitate understanding of the cellular functions of RBPs and of therapeutic agents with new mechanisms of action. In this Review, I present a current overview of targeting emerging RBPs using small-molecule inhibitors and recent progress in this burgeoning field. Small-molecule inhibitors that were reported for three representative emerging classes of RBPs, the microRNA-binding protein LIN28, the single-stranded or double-stranded RNA-binding Toll-like receptors and the CRISPR-associated (Cas) proteins, are highlighted from a medicinal-chemistry and chemical-biology perspective. However, although this field is burgeoning, challenges remain in the discovery and characterization of small-molecule inhibitors of RBPs.
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Bi Q, Liu Q, Han S, Zhang L, Xing L, Zhang X, Wang Z, Miao Y, Tan N. An integrated multiple reaction monitoring strategy based on predicted precursor ions and characteristic product ions for global profiling Rubiaceae-type cyclopeptides in three Rubiaspecies. J Chromatogr A 2020; 1618:460902. [PMID: 32067759 DOI: 10.1016/j.chroma.2020.460902] [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: 10/02/2019] [Revised: 01/03/2020] [Accepted: 01/19/2020] [Indexed: 11/28/2022]
Abstract
Complexity and diversity of natural compounds make it a challenge for globally profiling constituents in multiple species plants, especially for minor new compounds. Rubiaceae-type cyclopeptides (RAs) are one kind of active constituents and characteristic components in Rubia plants, particularly Rubia cordifolia (RC), which is one kind of traditional Chinese medicines. In this study, a new multiple reaction monitoring strategy (PPCP-MRM) based on predicted precursor ions and characteristic product ions was developed to globally profile RAs in RC and its two main adulterants, including Rubia alata (also named Jinjiancao in Chinese) (RAJ) and Rubia podantha (RP). Moreover, characteristic components of these species have been found by targeted relative quantitative analysis of RAs by LC-MS. In total, 39 RAs have been structurally annotated based on fragment ions in MS2 data, including 19 new compounds. In addition, 7 RAs as the chemical markers were found to distinguish these three Rubia species. The results indicated that this PPCP-MRM integrated strategy is a powerful tool for comprehensive analysis of RAs and screening chemical markers for Rubia species discrimination, which would be useful for distinguishing Rubia adulterants. Furthermore, this developed strategy could also be a useful tool for analysis of other cyclopeptides.
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Affiliation(s)
- Qirui Bi
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Qiao Liu
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Sha Han
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Lu Zhang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Longsheng Xing
- Center for Ecological Genomics, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, People's Republic of China
| | - Xuejia Zhang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Zhe Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Yuanyuan Miao
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China.
| | - Ninghua Tan
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China.
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Natural Naphthohydroquinone Dimer Rubioncolin C Exerts Anti-Tumor Activity by Inducing Apoptotic and Autophagic Cell Death and Inhibiting the NF-κB and Akt/mTOR/P70S6K Pathway in Human Cancer Cells. Cells 2019; 8:cells8121593. [PMID: 31817918 PMCID: PMC6953124 DOI: 10.3390/cells8121593] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 12/04/2019] [Accepted: 12/04/2019] [Indexed: 01/24/2023] Open
Abstract
Naphthohydroquinone dimers isolated from Rubia plants have garnered more attention due to their distinctive chemical structures and intriguing bioactivities. In our previous studies, we obtained ten naphthohydroquinone dimers containing seven novel ones and found that most of them possessed anti-tumor activities, especially rubioncolin C. However, the underlying mechanism remains unknown. In this study, we focused on rubioncolin C and found that it could inhibit the growth of cancer cell lines with IC50 values between 1.14 and 9.93 μM. Further experiments demonstrated that rubioncolin C induced apoptotic and autophagic cell death and inhibited the Akt/mTOR/P70S6K signaling pathway in HCT116 and HepG2 cells. Moreover, we observed that rubioncolin C inhibited the TNF-α- and LPS-induced NF-κB activation upstream of the p65 protein, which contributed to rubioncolin C-induced cell death. Rubioncolin C could also prevent LPS-induced endotoxin shock in vivo. Moreover, rubioncolin C suppressed tumor growth through inducing apoptosis and autophagy and inactivating NF-κB in vivo. These findings clarify the anti-tumor mechanism of rubioncolin C using biochemical techniques and pharmacological models and might contribute to the future development of rubioncolin C as a new therapeutic agent for treating cancer.
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Tallon E, Dreisbach C. Using Data Science to Understand Complexity and Quantify Heterogeneity in the Onset and Progression of Chronic Disease. Biol Res Nurs 2019; 21:449-457. [PMID: 31345047 DOI: 10.1177/1099800419863161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Novel discoveries in genomics and other omics sciences are rapidly redefining our understanding of health and disease as well as advancing the development of targeted therapeutics for improving health outcomes. The scale of these findings, fueled by vast increases in computing power and new techniques in data analytics, easily supersedes that of phenomena observed using more traditional research approaches. Until recently, the classification and diagnosis of disease has involved rather subjective processes, whereby signs and late symptom patterns are linked with clinical outcomes. However, symptom patterns, disease trajectories, and health outcomes are complex entities characterized by a wide range of clinical manifestations and progression patterns. The burgeoning fields of data science and bioinformatics are opening opportunities for nurse scientists to quantify disease heterogeneity by defining and categorizing disease phenotypes and endotypes. Nurse scientists and clinicians can play a critical role in engaging patients and the larger scientific community in these efforts. The purpose of this article is to provide an introduction to concepts critical to understanding and quantifying heterogeneity in the onset and progression of chronic disease. To present and exemplify key concepts, we (1) discuss evidence for heterogeneity in the onset and progression of Type 1 diabetes, (2) link emerging research approaches in data science with principles in network science and systems biology to lay the groundwork for stratifying subclinical and advanced chronic disease, thus expanding the purview of symptom science, and (3) describe the computational skills needed to engage in these analyses.
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Affiliation(s)
- Erin Tallon
- 1 MU Sinclair School of Nursing, University of Missouri, Columbia, MO, USA.,2 University of Missouri Informatics Institute, University of Missouri, Columbia, MO, USA
| | - Caitlin Dreisbach
- 3 School of Nursing, University of Virginia, Charlottesville, VA, USA
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Feng L, Wang J, Liu S, Zhang XJ, Bi QR, Hu YY, Wang Z, Tan NH. Colletopeptides A-D, Anti-inflammatory Cyclic Tridepsipeptides from the Plant Endophytic Fungus Colletotrichum sp. S8. JOURNAL OF NATURAL PRODUCTS 2019; 82:1434-1441. [PMID: 31181925 DOI: 10.1021/acs.jnatprod.8b00829] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Four new hybrid peptide-polyketide cyclic tridepsipeptides, colletopeptides A-D (1-4), were isolated and characterized from the endophytic fungus Colletotrichum sp. S8 derived from the stems of Rubia podantha with the guidance of LC-UV-MS detection. Their structures were elucidated by extensive spectroscopic analysis and X-ray crystallography. Compounds 1-4 are rare natural 12-membered cyclic tridepsipeptides containing a 3,5,11-trihydroxy-2-methyl dodecanoic acid unit in their structures. 1-4 inhibited lipopolysaccharide-induced nitric oxide production in RAW264.7 macrophages with the IC50 values of 8.3, 38.7, 13.5, and 22.2 μM, respectively. 1 also inhibited the production of inflammatory factors IL-6 and TNF-α, and decreased the phosphorylation of NF-κB-associated proteins IκBα and p65.
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Affiliation(s)
- Li Feng
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Jia Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Shuai Liu
- Faculty of Life Science and Food Engineering , Huaiyin Institute of Technology , Huaian 223001 , People's Republic of China
| | - Xue-Jia Zhang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Qi-Rui Bi
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Yan-Yun Hu
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Zhe Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Ning-Hua Tan
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
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D'Agostino VG, Sighel D, Zucal C, Bonomo I, Micaelli M, Lolli G, Provenzani A, Quattrone A, Adami V. Screening Approaches for Targeting Ribonucleoprotein Complexes: A New Dimension for Drug Discovery. SLAS DISCOVERY 2019; 24:314-331. [PMID: 30616427 DOI: 10.1177/2472555218818065] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
RNA-binding proteins (RBPs) are pleiotropic factors that control the processing and functional compartmentalization of transcripts by binding primarily to mRNA untranslated regions (UTRs). The competitive and/or cooperative interplay between RBPs and an array of coding and noncoding RNAs (ncRNAs) determines the posttranscriptional control of gene expression, influencing protein production. Recently, a variety of well-recognized and noncanonical RBP domains have been revealed by modern system-wide analyses, underlying an evolving classification of ribonucleoproteins (RNPs) and their importance in governing physiological RNA metabolism. The possibility of targeting selected RNA-protein interactions with small molecules is now expanding the concept of protein "druggability," with new implications for medicinal chemistry and for a deeper characterization of the mechanism of action of bioactive compounds. Here, taking SF3B1, HuR, LIN28, and Musashi proteins as paradigmatic case studies, we review the strategies applied for targeting RBPs, with emphasis on the technological advancements to study protein-RNA interactions and on the requirements of appropriate validation strategies to parallel high-throughput screening (HTS) efforts.
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Affiliation(s)
- Vito Giuseppe D'Agostino
- 1 University of Trento, Department of Cellular, Computational and Integrative Biology (CIBIO), Trento, Italy
| | - Denise Sighel
- 1 University of Trento, Department of Cellular, Computational and Integrative Biology (CIBIO), Trento, Italy
| | - Chiara Zucal
- 1 University of Trento, Department of Cellular, Computational and Integrative Biology (CIBIO), Trento, Italy
| | - Isabelle Bonomo
- 1 University of Trento, Department of Cellular, Computational and Integrative Biology (CIBIO), Trento, Italy
| | - Mariachiara Micaelli
- 1 University of Trento, Department of Cellular, Computational and Integrative Biology (CIBIO), Trento, Italy
| | - Graziano Lolli
- 1 University of Trento, Department of Cellular, Computational and Integrative Biology (CIBIO), Trento, Italy
| | - Alessandro Provenzani
- 1 University of Trento, Department of Cellular, Computational and Integrative Biology (CIBIO), Trento, Italy
| | - Alessandro Quattrone
- 1 University of Trento, Department of Cellular, Computational and Integrative Biology (CIBIO), Trento, Italy
| | - Valentina Adami
- 2 University of Trento, HTS Core Facility, Department of Cellular, Computational and Integrative Biology (CIBIO), Trento, Italy
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Chen H, Li F, Yao Y, Wang Z, Zhang Z, Tan N. Redox Dual-Responsive and O 2‑Evolving Theranostic Nanosystem for Highly Selective Chemotherapy against Hypoxic Tumors. Theranostics 2019; 9:90-103. [PMID: 30662556 PMCID: PMC6332786 DOI: 10.7150/thno.30259] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 11/21/2018] [Indexed: 02/05/2023] Open
Abstract
Activatable theranostic agents, which combine fluorescent reporters with masked chemotherapeutic agents that are activated by tumor-associated stimuli, would be attractive candidates to improve the tumor selectivity of chemotherapy. This work reports a ROS/GSH dual-activatable and O2‑evolving theranostic nanosystem (RA-S-S-Cy@PLGA NPs) for highly selective therapy against hypoxic tumors and in situ fluorescence-tracking of cancer chemotherapy. Methods: In this system, the newly designed theranostic agent (RA-S-S-Cy) is composed of a disulfide bond as a cleavable linker, a near infrared (NIR) active fluorophore as a fluorescent tracker, and a natural cyclopeptide RA-V as the active anti-cancer agent. Upon reaction with the high level of intracellular glutathione (GSH), disulfide cleavage occurs, resulting in concomitant active drug RA-V release and significant NIR fluorescence increase. To further improve the tumor targeting of RA-S-S-Cy and achieve redox dual-responsiveness, RA-S-S-Cy was incorporated into the c(RGDfK)-targeted PLGA nanoparticles together with an O2-generating agent (catalase) to produce RA-S-S-Cy@PLGA NPs. Results: The cell-specific and redox dual-activatable release of RA-V lead to enhanced therapeutic outcomes in vivo and in vitro. More significantly, the RA-S-S-Cy@PLGA NPs were successfully applied for monitoring of drug release and chemotherapeutic efficacy in situ by "turn-on" NIR fluorescence. Conclusions: RA-S-S-Cy@PLGA NPs would be efficient theranostic nanosystems for more precise therapy against hypoxic tumors and provides a potential tool for deeper understanding of drug release mechanisms.
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Affiliation(s)
- Huachao Chen
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Fei Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
| | - Yongrong Yao
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Zhe Wang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Zhihao Zhang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Ninghua Tan
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
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14
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Hu YY, Feng L, Wang J, Zhang XJ, Wang Z, Tan NH. Rubipodanin B, a New Cytotoxic Cyclopeptide from Rubia podantha. Chem Biodivers 2018; 16:e1800438. [PMID: 30334345 DOI: 10.1002/cbdv.201800438] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 10/17/2018] [Indexed: 12/19/2022]
Abstract
Using the TLC cyclopeptide protosite detection method, a new cyclohexapeptide named rubipodanin B (1), together with 11 known Rubiaceae-type cyclopeptides (RAs), RA-X-OMe (2), RA-IV (3), RA-XI (4), RA-XIII-OMe (5), rubiyunnanin C (6), RA-I (7), RA-III (8), RA-V (9), RA-VII (10), RA-XII (11) and rubipodanin A (12), were obtained from the roots and rhizomes of Rubia podantha Diels. The structures were determined using various spectroscopic methods. Among them, 2 was firstly identified as a natural product, and 3-6 were firstly isolated from this species. Cytotoxicity and NF-κB signaling pathway activity of 1, 2, 4, 6, 7 and 9 were evaluated. All these compounds showed cytotoxic activities against three human tumor cell lines, MDA-MB-231, SW620 and HepG2, with the IC50 values between 0.015 and 10.27 μm, and only 7 and 9 possessed NF-κB inhibitory activities with the IC50 values of 2.42 and 0.046 μm, respectively, which demonstrated that 2-alanine amino acid plays a key role to maintain the RAs bioactivity.
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Affiliation(s)
- Yan-Yun Hu
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, P. R. China
| | - Li Feng
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, P. R. China
| | - Jia Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, P. R. China
| | - Xue-Jia Zhang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, P. R. China
| | - Zhe Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, P. R. China
| | - Ning-Hua Tan
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, P. R. China
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15
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Systematic characterization and quantification of Rubiaceae-type cyclopeptides in 20 Rubia species by ultra performance liquid chromatography tandem mass spectrometry combined with chemometrics. J Chromatogr A 2018; 1581-1582:43-54. [DOI: 10.1016/j.chroma.2018.10.049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 09/30/2018] [Accepted: 10/27/2018] [Indexed: 12/15/2022]
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16
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Rehman NU, Abed RMM, Hussain H, Khan HY, Khan A, Khan AL, Ali M, Al-Nasri A, Al-Harrasi K, Al-Rawahi AN, Wadood A, Al-Rawahi A, Al-Harrasi A. Anti-proliferative potential of cyclotetrapeptides from Bacillus velezensis RA5401 and their molecular docking on G-Protein-Coupled Receptors. Microb Pathog 2018; 123:419-425. [PMID: 30075241 DOI: 10.1016/j.micpath.2018.07.043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 07/29/2018] [Accepted: 07/30/2018] [Indexed: 10/28/2022]
Abstract
Elucidation of bioactive chemical compounds from rhizobacteria is highly utilized in pharmaceuticals and naturopathy, due to their health benefits to human and plants. In current study, four cyclopeptides along with one phenyl amide were isolated from the ethyl acetate extract of Bacillus velezensis sp. RA5401. Their structures were determined and characterized as cycle (L-prolyl-L-leucyl)2 (1), cyclo (L-prolyl-l-valine)2 (2), cycle (L-phenylanalyl-L-propyl)2 (3), cyclo (D-pro-L-tyr-L-pro-L-tyr)2 (4) and N-(2-phenylethyl)acetamide (5) on the basis of electron spray ionization mass spectrometry (ESI-MS), nuclear magnetic resonance (NMR) techniques and comparison with the literature data. The five compounds have been isolated for the first time from this species. The effect of various concentrations of these compounds on the proliferation of MDA-MB-231 breast cancer cells was examined. It was found that 1 and 2 induced concentration-independent anti-proliferative effects, while 3, 4 and 5 inhibited cancer cell proliferation in a concentration-dependent manner. Furthermore, to determine the suitable binding targets of these compounds within cancer cell line, detailed target prediction and comparative molecular-docking studies were performed. The compounds 1 and 2 hit intracellular anti-cancer targets of proteases family, while compounds 3, 4 and 5 interacted with different membrane receptors of G-Protein-Coupled Receptors (GPCRs). In conclusion, the Bacillus velezensis RA5401 can be an ideal strain to produce anti-proliferative constituents at industrial scale.
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Affiliation(s)
- Najeeb Ur Rehman
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz, Nizwa, 616, Oman
| | - Raeid M M Abed
- Department of Biology, College of Science, Sultan Qaboos University, Muscat, Oman
| | - Hidayat Hussain
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz, Nizwa, 616, Oman
| | - Husain Yar Khan
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz, Nizwa, 616, Oman
| | - Ajmal Khan
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz, Nizwa, 616, Oman
| | - Abdul L Khan
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz, Nizwa, 616, Oman
| | - Majid Ali
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad, 22060, Pakistan
| | - Abdullah Al-Nasri
- Department of Biology, College of Science, Sultan Qaboos University, Muscat, Oman
| | - Khalid Al-Harrasi
- Department of Biology, College of Science, Sultan Qaboos University, Muscat, Oman
| | - Ahmed N Al-Rawahi
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz, Nizwa, 616, Oman
| | - Abdul Wadood
- Department of Biochemistry, Abdul Wali Khan University Mardan, Mardan, 23200, Pakistan
| | - Ahmed Al-Rawahi
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz, Nizwa, 616, Oman
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz, Nizwa, 616, Oman.
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17
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Wang Z, Zhao S, Song L, Pu Y, Wang Q, Zeng G, Liu X, Bai M, Li S, Gao F, Chen L, Wang C, Tan N. Natural cyclopeptide RA-V inhibits the NF-κB signaling pathway by targeting TAK1. Cell Death Dis 2018; 9:715. [PMID: 29915207 PMCID: PMC6006164 DOI: 10.1038/s41419-018-0743-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 05/21/2018] [Accepted: 05/28/2018] [Indexed: 02/05/2023]
Abstract
Rubiaceae-type cyclopeptides (RAs) are a type of plant cyclopeptides from the Rubia that have garnered significant attention owing to their unique bicyclic structures and amazing antitumour activities. Our recent work has shown that RAs suppress inflammation and angiogenesis and induce apoptosis. However, the underlying mechanism and targets remained unknown. Nuclear factor κB (NF-κB) signaling pathway plays a critical role in these biological processes, prompting us to investigate whether and how RAs affect this pathway. By screening compound libraries using NF-κB-dependent luciferase reporter, we observed that RA-V is the best NF-κB inhibitor. Further experiments demonstrated that RA-V interrupted the TAK1-TAB2 interaction and targeted TAK1 in this pathway. Moreover, RA-V prevented endotoxin shock and inhibited NF-κB activation and tumor growth in vivo. These findings clarify the mechanism of RA-V on NF-κB pathway and might account for the majority of known bioactivities of RA-V, which will help RA-V develop as new antiinflammatory and antitumour therapies.
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Affiliation(s)
- Zhe Wang
- School of Traditional Chinese Pharmacy & State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Simeng Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Lihua Song
- School of Traditional Chinese Pharmacy & State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, China
| | - Yuzhi Pu
- State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Qiang Wang
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Guangzhi Zeng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Xing Liu
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Ming Bai
- MOE Key Laboratory of Bioinformatics and Bioinformatics Division, TNLIST/Department of Automation, Tsinghua University, Beijing, 100084, China
| | - Shao Li
- MOE Key Laboratory of Bioinformatics and Bioinformatics Division, TNLIST/Department of Automation, Tsinghua University, Beijing, 100084, China
| | - Fabao Gao
- State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Lijuan Chen
- State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital of Sichuan University, Chengdu, 610041, China.
| | - Chen Wang
- School of Traditional Chinese Pharmacy & State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, China.
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, 200031, China.
| | - Ninghua Tan
- School of Traditional Chinese Pharmacy & State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, China.
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
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18
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Wang Z, Zhao SM, Hu YY, Feng L, Zhao LM, Di YT, Tan NH. Rubipodanones A-D, naphthohydroquinone dimers from the roots and rhizomes of Rubia podantha. PHYTOCHEMISTRY 2018; 145:153-160. [PMID: 29132078 DOI: 10.1016/j.phytochem.2017.11.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 10/30/2017] [Accepted: 11/01/2017] [Indexed: 06/07/2023]
Abstract
Four previously undescribed naphthohydroquinone dimers named rubipodanones A-D, together with 19 known quinones containing three known napthohydroquinone dimers named rubioncolin C, methyl 5-hydroxy-dinaphtho[1,2-2',3']furan-7,12-dione-6-carboxylate and rubialatin B, were isolated from the roots and rhizomes of Rubia podantha. Their structures and absolute configurations were determined mainly by NMR, X-ray diffraction, and computational methods. Rubipodanones C and D, the glycosides of rubipodanone A and a pair of C-3 epimer, are the first identified dimeric napthohydroquinone glycosides from the Rubia plants. All naphthohydroquinone dimers were evaluated for their cytotoxicities against ten tumor cell lines and effects on the tumor-associated NF-κB signaling pathway, and rubioncolin C showed the best cytotoxicity with IC50 value of 1.53 μM and NF-κB inhibitory activity with IC50 value of 2.97 μM. These results also demonstrated that the key roles of C-3 configuration and sugar group for biological activities of rubipodanone C.
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Affiliation(s)
- Zhe Wang
- School of Traditional Chinese Pharmacy and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, People's Republic of China; State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Si-Meng Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Yan-Yun Hu
- School of Traditional Chinese Pharmacy and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Li Feng
- School of Traditional Chinese Pharmacy and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Li-Mei Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Ying-Tong Di
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Ning-Hua Tan
- School of Traditional Chinese Pharmacy and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, People's Republic of China; State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China.
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Dahiya R, Singh S. Toward the Synthesis and Pharmacological Screening of a Natural Cycloheptapeptide of Plant Origin. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The solution-phase synthesis of a proline and glycine-rich plant-derived cyclic heptapeptide, gypsophin E (8), is reported via coupling of a tetrapeptide unit Glycyl-L-leucyl-L-valyl-L-proline-OMe with a tripeptide unit Boc-L-isoleucyl-glycyl-L-proline-OH, followed by cyclization of the linear fragment having seven amino acid units. The structure of the newly synthesized cycloheptapeptide was confirmed by means of chemical and spectroscopic methods. The newly synthesized cyclopolypeptide displayed potent antifungal and anthelmintic activities against the pathogenic yeast Candida albicans, the dermatophytes Trichophyton mentagrophytes and Microsporum audouinii at the 6 μg/mL level, and the earthworms Megascoplex konkanensis, Pontoscotex corethruses and Eudrilus eugeniea at a concentration of 2 mg/mL.
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Affiliation(s)
- Rajiv Dahiya
- Laboratory of Peptide Research and Development, School of Pharmacy, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, Trinidad & Tobago, West Indies
| | - Sunil Singh
- Research Scholar, Department of Pharmacy, Mewar University, Gangrar, Chittorgarh, Rajasthan, India
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20
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Design and Synthesis of Analogues of Marine Natural Product Galaxamide, an N-methylated Cyclic Pentapeptide, as Potential Anti-Tumor Agent in Vitro. Mar Drugs 2016; 14:md14090161. [PMID: 27598177 PMCID: PMC5039532 DOI: 10.3390/md14090161] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 08/26/2016] [Accepted: 08/26/2016] [Indexed: 12/14/2022] Open
Abstract
Herein, we report design and synthesis of novel 26 galaxamide analogues with N-methylated cyclo-pentapeptide, and their in vitro anti-tumor activity towards the panel of human tumor cell line, such as, A549, A549/DPP, HepG2 and SMMC-7721 using MTT assay. We have also investigated the effect of galaxamide and its representative analogues on growth, cell-cycle phases, and induction of apoptosis in SMMC-7721 cells in vitro. Reckon with the significance of conformational space and N-Me aminoacid (aa) comprising this compound template, we designed the analogues with modification in N-Me-aa position, change in aa configuration from l to d aa and substitute one Leu-aa to d/l Phe-aa residue with respective to the parent structure. The efficient solid phase parallel synthesis approach is employed for the linear pentapeptide residue containing N-Me aa, followed by solution phase macrocyclisation to afford target cyclo pentapeptide compounds. In the present study, all galaxamide analogues exhibited growth inhibition in A549, A549/DPP, SMMC-7721 and HepG2 cell lines. Compounds 6, 18, and 22 exhibited interesting activities towards all cell line tested, while Compounds 1, 4, 15, and 22 showed strong activity towards SMMC-7221 cell line in the range of 1–2 μg/mL IC50. Flow cytometry experiment revealed that galaxamide analogues namely Compounds 6, 18, and 22 induced concentration dependent SMMC-7721 cell apoptosis after 48 h. These compounds induced G0/G1 phase cell-cycle arrest and morphological changes indicating induction of apoptosis. Thus, findings of our study suggest that the galaxamide and its analogues 6, 18 and 22 exerted growth inhibitory effect on SMMC-7721 cells by arresting the cell cycle in the G0/G1 phase and inducing apoptosis. Compound 1 showed promising anti-tumor activity towards SMMC-7721 cancer cell line, which is 9 and 10 fold higher than galaxamide and reference DPP (cisplatin), respectively.
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21
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Figueiredo PO, Matos MDFC, Perdomo RT, Kato WH, Barros MVGO, Garcez FR, Garcez WS. Rubiaceae-Type Cyclopeptides from Galianthe thalictroides. JOURNAL OF NATURAL PRODUCTS 2016; 79:1165-1169. [PMID: 26913941 DOI: 10.1021/acs.jnatprod.5b00849] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Two Rubiaceae-type cyclopeptides, 6-O-methylbouvardin (1) and the new cyclopeptide 5β-hydroxy-RA-III (2), were isolated from the roots of Galianthe thalictroides. Employing the sulforhodamine B assay, compounds 1 and 2 were tested in vitro against three cancer cell lines--786-0 (kidney carcinoma), PC-3 (prostate carcinoma), and HT-29 (colon carcinoma)--and showed GI50 values ranging from 0.06 to 1.80 μg mL(-1). This is the first report on the isolation of Rubiaceae-type cyclopeptides from a genus other than Rubia or Bouvardia.
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Affiliation(s)
- Patrícia O Figueiredo
- Instituto de Química, Universidade Federal de Mato Grosso do Sul , Campo Grande, MS 79074-460, Brazil
| | - Maria de Fatima C Matos
- Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul , Campo Grande, MS 79070-900, Brazil
| | - Renata T Perdomo
- Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul , Campo Grande, MS 79070-900, Brazil
| | - Wilson H Kato
- Instituto de Química, Universidade Federal de Mato Grosso do Sul , Campo Grande, MS 79074-460, Brazil
| | | | - Fernanda R Garcez
- Instituto de Química, Universidade Federal de Mato Grosso do Sul , Campo Grande, MS 79074-460, Brazil
| | - Walmir S Garcez
- Instituto de Química, Universidade Federal de Mato Grosso do Sul , Campo Grande, MS 79074-460, Brazil
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