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lycorine

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https://www.readbyqxmd.com/read/28450693/lycorine-induces-apoptosis-of-a549-cells-via-ampk-mammalian-target-of-rapamycin-mtor-s6k-signaling-pathway
#1
Hui Zeng, Rong Fu, Linxia Yan, Jian Huang
BACKGROUND This study was designed to investigate the effect of lycorine (LY) on the AMPK-mTOR-S6K signaling pathway and to clarify its role in autophagy and apoptosis. MATERIAL AND METHODS Various concentrations of LY were used to treat non-small cell lung carcinoma A549 cells. The MTT assay was used to measure cell viability and acridine orange staining was used to detect cell morphology changes. Western blot analysis was used to test the effect of LY on the expression levels of LC3, caspase 3, and other proteins involved in the AMPK-mTOR-S6K signaling pathway...
April 28, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28416753/synergistic-effects-of-the-immune-checkpoint-inhibitor-ctla-4-combined-with-the-growth-inhibitor-lycorine-in-a-mouse-model-of-renal-cell-carcinoma
#2
Xiezhao Li, Peng Xu, Chongshan Wang, Naijin Xu, Abai Xu, Yawen Xu, Takuya Sadahira, Motoo Araki, Koichiro Wada, Eiji Matsuura, Masami Watanabe, Junxia Zheng, Pinghua Sun, Peng Huang, Yasutomo Nasu, Chunxiao Liu
Renal cell carcinoma (RCC) management has undergone a major transformation over the past decade; immune checkpoint inhibitors are currently undergoing clinical trials and show promising results. However, the effectiveness of immune checkpoint inhibitors in patients with metastatic RCC (mRCC) is still limited. Lycorine, an alkaloid extracted from plants of the Amaryllidaceae family, is touted as a potential anti-cancer drug because of its demonstrative growth inhibition capacity (induction of cell cycle arrest and inhibition of vasculogenic mimicry formation)...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28251459/lycorine-inhibits-breast-cancer-growth-and-metastasis-via-inducing-apoptosis-and-blocking-src-fak-involved-pathway
#3
Xuexiang Ying, Anling Huang, Yajing Xing, Liping Lan, Zhengfang Yi, Pingqing He
Breast cancer is the most commonly diagnosed cancer type worldwide among women and more than 90% of patients die from tumor metastasis. Lycorine, a natural alkaloid, has been widely reported possessing potential efficacy against cancer proliferation and metastasis. In our study, the anti-tumor potency on breast cancer was evaluated in vitro and in vivo for the first time. Our results indicated that lycorine inhibited breast cancer cells growth, migration and invasion as well as induced their apoptosis. In in vivo study, lycorine not only suppressed breast tumor growth in xenograft models and inhibited breast tumor metastasis in MDA-MB-231 tail vein model...
February 27, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28240308/the-influences-of-four-types-of-soil-on-the-growth-physiological-and-biochemical-characteristics-of-lycoris-aurea-l-her-herb
#4
Miaohua Quan, Juan Liang
Based on the characteristics of Lycoris aurea (L. aurea) natural distribution and local soil types, we selected four representative types of soil, including humus soil, sandy soil, garden soil and yellow-brown soil, for conducting the cultivation experiments to investigate key soil factors influencing its growth and development and to select the soil types suitable for cultivating it. We found that there existed significant differences in the contents of mineral elements and the activities of soil enzymes (urease, phosphatase, sucrase and catalase) etc...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28044411/solid-phase-extraction-based-on-a-molecularly-imprinted-polymer-nanoshell-at-the-surface-of-silica-nanospheres-for-the-specific-enrichment-and-identification-of-alkaloids-from-crinum-asiaticum-l-var-sinicum
#5
Ruixiang Yang, Dong Zhu, Hongmei Wen, Anchen Fu, Zihan Zhao, Guoying Dai, Zhaoyi Miao, Yue Hu
A molecularly imprinted nanoshell on the surface of silica nanospheres was prepared for specific enrichment and identification of alkaloids from Crinum asiaticum L. var. sinicum. The nanoshell was synthesized by surface polymerization using lycorine as the template, acrylamide as the functional monomer, ethylene glycol dimethacrylate as the cross-linker, 2',2-azobisisobutyronitrile as the initiator and acetonitrile as the pore-forming agent. The core-shell nanospheres were characterized by transmission electron microscopy and infrared spectroscopy, and the results show that the nanoshell layer was homogeneously attached to the surface of vinyl-modified SiO2 nanospheres...
January 3, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28042037/lycorine-induces-apoptosis-of-bladder-cancer-t24-cells-by-inhibiting-phospho-akt-and-activating-the-intrinsic-apoptotic-cascade
#6
Chongshan Wang, Qiongren Wang, Xiezhao Li, Zhong Jin, Peng Xu, Naijin Xu, Abai Xu, Yawen Xu, Shaobo Zheng, Junxia Zheng, Chunxiao Liu, Peng Huang
Lycorine, an alkaloid extracted from Amaryllidaceae genera, exhibits antitumor activities against several human solid-tumor and leukemia cells with extensive influence on various cell signaling molecules. However, the effect of lycorine on bladder cancer has not yet been investigated. In this study, we demonstrated that lycorine induced apoptosis in human bladder cancer T24 cells, an effect that is mediated via inhibition of phospho-Akt expression and the consequent activation of caspase-3 and Bax in vitro...
January 29, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27924158/lycorine-downregulates-hmgb1-to-inhibit-autophagy-and-enhances-bortezomib-activity-in-multiple-myeloma
#7
Mridul Roy, Long Liang, Xiaojuan Xiao, Yuanliang Peng, Yuhao Luo, Weihua Zhou, Ji Zhang, Lugui Qiu, Shuaishuai Zhang, Feng Liu, Mao Ye, Wen Zhou, Jing Liu
Multiple myeloma (MM) is largely incurable and drug-resistant. Novel therapeutic approaches such as inhibiting autophagy or rational drug combinations are aimed to overcome this issue. In this study, we found that lycorine exhibits a promising anti-proliferative activity against MM in vitro and in vivo by inhibiting autophagy. We identified High mobility group box 1 (HMGB1), an important regulator of autophagy, as the most aberrantly expressed protein after lycorine treatment and as a critical mediator of lycorine activity...
2016: Theranostics
https://www.readbyqxmd.com/read/27864138/sarniensine-a-mesembrine-type-alkaloid-isolated-from-nerine-sarniensis-an-indigenous-south-african-amaryllidaceae-with-larvicidal-and-adulticidal-activities-against-aedes-aegypti
#8
Marco Masi, Alet E van der Westhuyzen, Nurhayat Tabanca, Marco Evidente, Alessio Cimmino, Ivan R Green, Ulrich R Bernier, James J Becnel, Jeffrey R Bloomquist, Willem A L van Otterlo, Antonio Evidente
A new mesembrine-type alkaloid, named sarniensine, was isolated together with tazettine, lycorine, the main alkaloid, and 3-epimacronine from Nerine sarniensis, with the last two produced for the first time by this plant. This Amaryllidaceae, which is indigenous of South Africa, was investigated for its alkaloid content, because the organic extract of its bulbs showed strong larvicidal activity with an LC50 value of 0.008μgμL(-1) against first instar Aedes aegypti larvae and with an LD50 value 4.6μg/mosquito against adult female Ae...
January 2017: Fitoterapia
https://www.readbyqxmd.com/read/27847203/lycorine-induces-cell-death-in-mm-by-suppressing-janus-kinase-signal-transducer-and-activator-of-transcription-via-inducing-the-expression-of-socs1
#9
Zhouxiang Jin, Shujuan Zhou, Yu Zhang, Haige Ye, Songfu Jiang, Kang Yu, Yongyong Ma
Despite the use of novel anti-myeloma agents,nearly all patients will eventually relapse or become refractory to drug treatment. New and more effective drugs for multiple myeloma (MM) are urgently needed. The JAK-STAT signaling pathway is important in the proliferation of myeloma cells.Lycorine,a natural alkaloid extracted from amaryllidaceae, has shown anti-tumor effects against a variety of solid tumors. However, its effects on MM remain unclear.In this study,we found that lycorine inhibited cellular viability and induced cell death in MM cell lines and primary myeloma cells which were derived from our four MM patients...
December 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27801807/alkaloids-with-activity-against-the-zika-virus-vector-aedes-aegypti-l-crinsarnine-and-sarniensinol-two-new-crinine-and-mesembrine-type-alkaloids-isolated-from-the-south-african-plant-nerine-sarniensis
#10
Marco Masi, Antonio Cala, Nurhayat Tabanca, Alessio Cimmino, Ivan R Green, Jeffrey R Bloomquist, Willem A L van Otterlo, Francisco A Macias, Antonio Evidente
Two new Amaryllidaceae alkaloids, belonging to the mesembrine- and crinine-types, named crinsarnine (1) and sarniensinol (2), were isolated from the dried bulbs of Nerine sarniensis together with bowdensine (3), sarniensine (4), hippadine (5) and 1-O-acetyl-lycorine (6). Crinsarnine (1) and sarniensinol (2) were characterized using spectroscopic and chiroptical methods as (1S,2S,4aR,10bS)-2,7-dimethoxy-1,2,3,4,4a,6-hexahydro-5,11b-ethano[1,3]dioxolo-[4,5-j]phenanthridin-1-yl acetate and (6-(3aR,4Z,6S,7aS)-6-methoxy-1-methyl-2,3,3a,6,7,7a-hexa-hydro-1H-indol-3a-yl)benzo[d][1,3]dioxol-5-yl)methanol, respectively...
October 27, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27693680/cadmium-stress-tolerance-in-wheat-seedlings-induced-by-ascorbic-acid-was-mediated-by-no-signaling-pathways
#11
Zhaofeng Wang, Qien Li, Weiguo Wu, Jie Guo, Yingli Yang
Ascorbic acid (AsA) and nitric oxide (NO) are well known and widespread antioxidants and gaseous molecules that regulate plant tolerance to several stresses. However, the relationship between them in plant response to stress, especially heavy stress, is largely unclear. This study demonstrated that both AsA and NO could enhance the tolerance of wheat seedlings to cadmium stress evidenced by root length change, which resulted from their roles in maintaining the balance in reactive oxygen species (ROS) and reducing the absorption of Cd...
January 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/27509914/lycorine-protects-cartilage-through-suppressing-the-expression-of-matrix-metalloprotenases-in-rat-chondrocytes-and-in-a-mouse-osteoarthritis-model
#12
Shuai Chen, Xiang-Qian Fang, Jian-Feng Zhang, Yan Ma, Xiao-Zhen Tang, Zhi-Jie Zhou, Ji-Ying Wang, An Qin, Shun-Wu Fan
Extracellular matrix (ECM) degrading enzymes, including matrix metalloproteinases (MMPs), are critical for cartilage destruction in the progression of osteoarthritis (OA). Thus, identifying novel drugs, which suppress the synthesis of MMPs may facilitate the treatment of OA. The cytotoxicity of lycorine was determined using a CCK8 assay. The effects of lycorine on IL‑1β‑induced upregulation of MMPs and activation of mitogen‑activated protein kinase pathways were detected by western blot analysis and reverse transcription‑quantitative polymerase chain reaction...
October 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27320892/-antitumor-activity-of-lycorine-in-renal-cell-carcinoma-achn-cell-line-and-its-mechanism
#13
Yi-Qiang Huang, Yi-Ming Zhang, Zhong Jin, Xie-Zhao Li, Chong-Shan Wang, Kai Xu, Peng Huang, Chun-Xiao Liu
OBJECTIVE: To investigate the antitumor effect of lycorine on renal cell carcinoma ACHN cells and explore the possible mechanism. METHODS: We used flow cytometry to examine the effect of lycorine on ACHN cell cycle and apoptosis. The cell proliferation, migration and invasion were assessed with MTS assay, wound healing assay, and Transwell assay, respectively. Colony forming assay was performed, and the mRNA and protein levels of Bax, Bcl-2, survivin, caspase-3, cyclin D1 and CDK4 were measured with qRT-PCR and Western blotting...
June 2016: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/27076115/oxidative-dearomatization-of-4-5-6-7-tetrahydro-1h-indoles-obtained-by-metal-and-solvent-free-thermal-5-endo-dig-cyclization-the-route-to-erythrina-and-lycorine-alkaloids
#14
Ivan A Andreev, Nina K Ratmanova, Anton M Novoselov, Dmitry S Belov, Irina F Seregina, Alexander V Kurkin
A facile one-pot approach based on a thermally induced metal- and solvent-free 5-endo-dig cyclization reaction of the amino propargylic alcohols in combination with Dess-Martin periodinane-promoted oxidative dearomatization of 4,5,6,7-tetrahydroindole intermediates provides an efficient and robust access to 5,6-dihydro-1H-indol-2(4H)ones. Green, relatively mild and operationally simple characteristics of the synthetic sequence are the major advantages, which greatly amplify the developed methodology. The utility of obtained indolones as unified key precursors is demonstrated by the application of these products to the formal total syntheses of a whole pleiad of Erythrina- and Lycorine-type alkaloids, namely (±)-erysotramidine, (±)-erysotrine, (±)-erythravine, (±)-γ-lycorane, and abnormal erythrinanes (±)-coccoline and (±)-coccuvinine...
May 17, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/26969844/synthesis-of-amaryllidaceae-constituents-and-unnatural-derivatives
#15
REVIEW
Mukund Ghavre, Jordan Froese, Milan Pour, Tomas Hudlicky
This update covers the syntheses of Amaryllidaceae alkaloids since the publication of the last major review in 2008. A short summary of past syntheses and their step count is provided for the major constituents; pancratistatin, 7-deoxypancratistatin, narciclasine, lycoricidine, lycorine, and for other natural constituents, as well as for unnatural derivatives. Discussion of biological activities is provided for unnatural derivatives. Future prospects and further developments in this area are covered at the end of the review...
May 4, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/26941773/cyp96t1-of-narcissus-sp-aff-pseudonarcissus-catalyzes-formation-of-the-para-para-c-c-phenol-couple-in-the-amaryllidaceae-alkaloids
#16
Matthew B Kilgore, Megan M Augustin, Gregory D May, John A Crow, Toni M Kutchan
The Amaryllidaceae alkaloids are a family of amino acid derived alkaloids with many biological activities; examples include haemanthamine, haemanthidine, galanthamine, lycorine, and maritidine. Central to the biosynthesis of the majority of these alkaloids is a C-C phenol-coupling reaction that can have para-para', para-ortho', or ortho-para' regiospecificity. Through comparative transcriptomics of Narcissus sp. aff. pseudonarcissus, Galanthus sp., and Galanthus elwesii we have identified a para-para' C-C phenol coupling cytochrome P450, CYP96T1, capable of forming the products (10bR,4aS)-noroxomaritidine and (10bS,4aR)-noroxomaritidine from 4'-O-methylnorbelladine...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/26790307/-study-on-effect-of-lycorine-in-inducing-apoptosis-of-pulmonary-carcinoma-cell-a549
#17
Wei Zhang, En-hai Cui
To explore the effect of lycorine in inducing apoptosis of pulmonary carcinoma cell A549 and its mechanism. In the study, pulmonary carcinoma cell A549 were taken as the experimental subject and processed with different concentrations of lycorine (0, 0.5, 1.0, 2.0, 4.0 and 8.0 μmol x L(-1)). The MTT method was used to observe the cell proliferation. The apoptosis rate of A549 cells was determined by Annexin FITC/PI double staining. The microplate reader was used to detect the activities of Bcl-2, Bax and p53...
August 2015: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/26714198/design-synthesis-and-structural-optimization-of-lycorine-derived-phenanthridine-derivatives-as-wnt-%C3%AE-catenin-signaling-pathway-agonists
#18
Duo-Zhi Chen, Chen-Xu Jing, Jie-Yun Cai, Ji-Bo Wu, Sheng Wang, Jun-Lin Yin, Xiao-Nian Li, Lin Li, Xiao-Jiang Hao
Lycorine is a benzylphenethylamine-type alkaloid member of the Amaryllidaceae family. A lycorine derivative, HLY78, was previously identified as a new Wnt/β-catenin signaling pathway agonist that targets the DAX domain of axin. Herein, the structural optimization of HLY78 and analyses of the structure-activity relationships of lycorine-derived phenanthridine derivatives as agonists of the Wnt/β-catenin signaling pathway are presented. This research suggests that triazole groups are important pharmacophores for Wnt activation; triazole groups at C-8 and C-9 of phenanthridine compounds markedly enhanced Wnt activation...
January 22, 2016: Journal of Natural Products
https://www.readbyqxmd.com/read/26596952/a-conserved-inhibitory-mechanism-of-a-lycorine-derivative-against-enterovirus-and-hepatitis-c-virus
#19
Yu Guo, Yaxin Wang, Lin Cao, Peng Wang, Jie Qing, Qizhen Zheng, Luqing Shang, Zheng Yin, Yuna Sun
Enterovirus 71 (EV71) (Picornaviridae family) and hepatitis C virus (HCV) (Flaviviridae family) are the causative agents of human hand, foot, and mouth disease (HFMD) and hepatitis C, resulting in a severe pandemic involving millions of infections in the Asia-Pacific region and worldwide. The great impact of EV71 and HCV on public health highlights the need to further our understanding of the biology of these two viruses and develop effective therapeutic antivirals. Here, we evaluated a total of 32 lycorine derivatives and demonstrated that 1-acetyllycorine suppressed the proliferation of multiple strains of EV71 in various cells...
February 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/26577925/apoptosis-inducing-effects-of-amaryllidaceae-alkaloids
#20
REVIEW
Jerald J Nair, Johannes van Staden, Jaume Bastida
The Amaryllidaceae occupies a privileged status amongst medicinal plants in having delivered the Alzheimer's drug galanthamine to the clinical market. Following its resounding success, there have been several positive indicators for the emergence of an anticancer drug from the family due to the potent antiproliferative activities manifested by several of its alkaloid constituents. Of these, the phenanthridones such as pancratistatin hold most promise as potential chemotherapeutics having succumbed to various phases of clinical trials...
2016: Current Medicinal Chemistry
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