1.Morchella conica, Morchella esculenta and Morchella delicosa Induce Apoptosis in Breast and Colon Cancer Cell Lines via Pro-apoptotic and Anti-apoptotic Regulation.
Faiz UL HAQ ; Muhammad IMRAN ; Sami ULLAH ; Usman AFTAB ; Tasleem AKHTAR ; Asif Haleem KHAN ; Roh ULLAH ; Hasan EJAZ ; Fatema GAFFAR ; Imad KHAN
Chinese journal of integrative medicine 2025;31(10):918-927
OBJECTIVE:
To explore the potential apoptotic mechanisms of 3 Morchella extracts (Morchella conica, Morchella esculenta and Morchella delicosa) on breast and colon cancer cell lines using apoptotic biomarkers.
METHODS:
Human breast cell line (MCF-7) and colon cancer cell line (SW-480) were treated with methanol and ethanol extracts of 3 Morchella species with concentration ranging from 0.0625 to 2 mg/mL. After that their effects on gene expression of apoptosis related markers (pro-apoptotic markers including Bax, caspase-3, caspase-7, and caspase-9, and the antiapoptotic marker including Bcl-2) were determined using reverse transcription polymerase chain reaction.
RESULTS:
All Morchella extracts reduced breast and colon cancer cells proliferation at half inhibitory concentration (IC50) of 0.02 ±0.01 to 0.68 ±0.30 mg/mL. As expected, all Morchella extracts significantly increased gene expressions of Bax, caspase-3, caspase-7, and caspase-9 and downregulated the gene expression of Bcl-2 in MCF-7 and SW-480 cell lines (P<0.05).
CONCLUSIONS
Morchella extracts demonstrated significant anti-proliferative activity against breast and colon cancer cell lines via an apoptosis induction mechanism. Anticancer activity of Morchella extracts and activation of apoptosis in breast and colon cancer cells suggest that it may be used to develop chemotherapeutic agents against cancer in future.
Humans
;
Apoptosis/genetics*
;
Colonic Neoplasms/drug therapy*
;
Breast Neoplasms/drug therapy*
;
Cell Line, Tumor
;
Cell Proliferation/drug effects*
;
Plant Extracts/pharmacology*
;
Gene Expression Regulation, Neoplastic/drug effects*
;
MCF-7 Cells
;
Ascomycota/chemistry*
2.Cytoprotective activity of Pogonatherum paniceum (Lam.) Hack. ethanolic extract evaluated by synchrotron radiation-based Fourier transform infrared microspectroscopy.
Benjawan DUNKHUNTHOD ; Kanjana THUMANU ; Yothin TEETHAISONG ; Priyada SITTISART ; Patcharawan SITTISART
Journal of Integrative Medicine 2025;23(2):182-194
OBJECTIVE:
The present study investigated the cytoprotective effects of a Pogonatherum paniceum extract prepared with 80% ethanol (PPE) using synchrotron radiation-based Fourier transform infrared (SR-FTIR) microspectroscopy and determined its phytochemical profile.
METHODS:
The volatile and polyphenolic compounds in PPE were characterized using gas chromatography-mass spectrometry and liquid chromatography-mass spectrometry, respectively. The antioxidant capacity of PPE was evaluated using chemical and cell-based assays. The SR-FTIR microspectroscopy was performed to evaluate the cytoprotective effect of PPE by identifying changes in macromolecule composition in tert-butyl hydroperoxide (tBuOOH)-induced oxidative damage in RAW264.7 cells.
RESULTS:
A total of 48 volatile compounds and 28 polyphenol components were found in PPE. PPE exhibited a high potential for antioxidant activity by scavenging the intracellular reactive oxygen species in tBuOOH-induced oxidative damage in RAW264.7 cells. PPE treatment also significantly protected RAW264.7 cells against tBuOOH-induced toxicity and restored cell viability. The SR-FTIR analysis revealed that tBuOOH increased the lipid and ester lipid content in RAW264.7 cells. The PPE exerted a cytoprotective effect by decreasing the levels of lipid and ester lipid compounds that had been elevated by tBuOOH in RAW264.7 cells. These findings indicate that PPE has cytoprotective potential due to its ability to inhibit endogenous reactive oxygen species.
CONCLUSION
This study extends the current knowledge on the phytochemistry of PPE and its antioxidant and cytoprotective effects. These findings support the use of SR-FTIR microspectroscopy to determine the cytoprotective effects of natural products. PPE extract may be a candidate compound for new therapeutics and nutraceuticals that target the prevention of oxidative stress-associated diseases. Please cite this article as: Dunkhunthod B, Thumanu K, Teethaisong Y, Sittisart P, Sittisart P. Cytoprotective activity of Pogonatherum paniceum (Lam.) Hack. ethanolic extract evaluated by synchrotron radiation-based Fourier transform infrared microspectroscopy. J Integr Med. 2025; 23(2): 182-194.
Animals
;
Mice
;
Spectroscopy, Fourier Transform Infrared/methods*
;
Plant Extracts/chemistry*
;
RAW 264.7 Cells
;
Synchrotrons
;
Oxidative Stress/drug effects*
;
Antioxidants/pharmacology*
;
Ethanol/chemistry*
;
Poaceae/chemistry*
;
Cell Survival/drug effects*
;
Cytoprotection/drug effects*
;
Reactive Oxygen Species/metabolism*
;
tert-Butylhydroperoxide
3.Withanolide derivatives from Physalis angulata var. villosa and their cytotoxic activities.
Peng WANG ; Jue YANG ; Yu ZHANG ; Jun JIN ; Meijun CHEN ; Xiaojiang HAO ; Chunmao YUAN ; Ping YI
Chinese Journal of Natural Medicines (English Ed.) 2025;23(6):762-768
A comprehensive phytochemical investigation of the leaves and twigs of Physalis angulata. var. villosa resulted in the isolation of 23 withanolide derivatives, including one novel 13,20-γ-lactone withanolide derivative (1) and three new withanolide derivatives (2-4). Architecturally, physalinin A (1) represents the first identified type B withanolide featuring a 13,20-γ-lactone moiety. The molecular structures of all isolates were elucidated using an integrated approach combining nuclear magnetic resonance (NMR) spectroscopy, mass spectrometry (MS), infrared (IR) spectroscopy, and quantum chemical calculations to confirm structural assignments. The antiproliferative activities of all isolated withanolides were evaluated against four human cancer cell lines (HEL, HCT-116, Colo320DM, and MDA-MB-231). Among them, eight derivatives (2, 5-8, 14, 15, and 23) exhibited significant inhibitory effects, with half-maximal inhibitory concentration (IC50) values of 0.18 ± 0.03 to 17.02 ± 0.21 μmol·L-1. Structure-activity relationship (SAR) analysis suggested that the presence of an epoxide ring enhances anticancer activity, potentially through increased reactivity or specific interactions with molecular targets involved in cancer progression. These findings underscore the pharmacological potential of withanolides as promising lead compounds for the development of novel anticancer therapeutics.
Withanolides/isolation & purification*
;
Physalis/chemistry*
;
Humans
;
Molecular Structure
;
Cell Line, Tumor
;
Antineoplastic Agents, Phytogenic/isolation & purification*
;
Cell Proliferation/drug effects*
;
Plant Leaves/chemistry*
;
Plant Extracts/pharmacology*
4.Lirispirolides A-L, a new class of sesquiterpene-monoterpene heterodimers with anti-neuroinflammatory activity from the rare medicinal plant Liriodendron chinense.
Yuhang HE ; Kexin LI ; Yufei WU ; Zexin JIN ; Jinfeng HU ; Yicheng MAO ; Juan XIONG
Chinese Journal of Natural Medicines (English Ed.) 2025;23(8):938-950
Lirispirolides A-L (1-12), twelve novel sesquiterpene-monoterpene heterodimers featuring distinctive carbon skeletons, were isolated from the branches and leaves of Chinese tulip tree [Liriodendron chinense (L. chinense)], a rare medicinal and ornamental plant endemic to China. The structural elucidation was accomplished through comprehensive spectroscopic analyses, quantum-chemical calculations, and X-ray crystallography. These heterodimers exhibit a characteristic 2-oxaspiro[4.5]decan-1-one structural motif, biosynthetically formed through intermolecular [4 + 2]-cycloaddition between a germacrane-type sesquiterpene and an ocimene-type monoterpene. The majority of the isolated compounds demonstrated significant anti-neuroinflammatory effects in lipopolysaccharide (LPS)-induced BV-2 microglial cells by reducing the production of pro-inflammatory mediators, specifically tumor necrosis factor-α (TNF-α) and nitric oxide (NO). Further investigation revealed that the lirispirolides' inhibition of NO release correlated with decreased messenger ribonucleic acid (mRNA) expression of inducible NO synthase (iNOS).
Sesquiterpenes/isolation & purification*
;
Anti-Inflammatory Agents/isolation & purification*
;
Animals
;
Mice
;
Tumor Necrosis Factor-alpha/genetics*
;
Nitric Oxide/immunology*
;
Microglia/immunology*
;
Molecular Structure
;
Liriodendron/chemistry*
;
Monoterpenes/isolation & purification*
;
Plants, Medicinal/chemistry*
;
Cell Line
;
Lipopolysaccharides
;
Nitric Oxide Synthase Type II/immunology*
;
Plant Extracts/pharmacology*
;
China
5.Ten new lignans with anti-inflammatory activities from the leaves of Illicium dunnianum.
Ting LI ; Xiaoqing HE ; Dabo PAN ; Xiaochun ZENG ; Siying ZENG ; Zhenzhong WANG ; Xinsheng YAO ; Wei XIAO ; Haibo LI ; Yang YU
Chinese Journal of Natural Medicines (English Ed.) 2025;23(8):990-996
The anti-inflammatory phytochemical investigation of the leaves of Illicium dunnianum (I. dunnianum) resulted in the isolation of five pairs of new lignans (1-5), and 7 known analogs (6-12). The separation of enantiomer mixtures 1-5 to 1a/1b-5a/5b was achieved using a chiral column with acetonitrile-water mixtures as eluents. The planar structures of 1-2 were previously undescribed, and the chiral separation and absolute configurations of 3-5 were reported for the first time. Their structures were determined through comprehensive spectroscopic data analysis [nuclear magnetic resonance (NMR), high-resolution electrospray ionization mass (HR-ESI-MS), infrared (IR), and ultraviolet (UV)] and quantum chemistry calculations (ECD). The new isolates were evaluated by measuring their inhibitory effect on NO in lipopolysaccharide (LPS)-stimulated BV-2 cells. Compounds 1a, 3a, 3b, and 5a demonstrated partial inhibition of NO production in a concentration-dependent manner. Western blot and real-time polymerase chain reaction (PCR) assays revealed that 1a down-regulated the messenger ribonucleic acid (mRNA) levels of tumor necrosis factor α (TNF-α), interleukin-6 (IL-6), COX-2, and iNOS and the protein expressions of COX-2 and iNOS. This research provides guidance and evidence for the further development and utilization of I. dunnianum.
Lignans/isolation & purification*
;
Plant Leaves/chemistry*
;
Anti-Inflammatory Agents/isolation & purification*
;
Mice
;
Animals
;
Molecular Structure
;
Plant Extracts/pharmacology*
;
Illicium/chemistry*
;
Cyclooxygenase 2/immunology*
;
Interleukin-6/immunology*
;
Nitric Oxide/metabolism*
;
Cell Line
;
Tumor Necrosis Factor-alpha/immunology*
;
Nitric Oxide Synthase Type II/immunology*
;
Lipopolysaccharides
6.Chinese agarwood petroleum ether extract suppressed gastric cancer progression via up-regulation of DNA damage-induced G0/G1 phase arrest and HO-1-mediated ferroptosis.
Lishan OUYANG ; Xuejiao WEI ; Fei WANG ; Huiming HUANG ; Xinyu QIU ; Zhuguo WANG ; Peng TAN ; Yufeng GAO ; Ruoxin ZHANG ; Jun LI ; Zhongdong HU
Chinese Journal of Natural Medicines (English Ed.) 2025;23(10):1210-1220
Gastric cancer (GC) is characterized by high morbidity and mortality rates. Chinese agarwood comprises the resin-containing wood of Aquilaria sinensis (Lour.) Gilg., traditionally utilized for treating asthma, cardiac ischemia, and tumors. However, comprehensive research regarding its anti-GC effects and underlying mechanisms remains limited. In this study, Chinese agarwood petroleum ether extract (CAPEE) demonstrated potent cytotoxicity against human GC cells, with half maximal inhibitory concentration (IC50) values for AGS, HGC27, and MGC803 cells of 2.89, 2.46, and 2.37 μg·mL-1, respectively, at 48 h. CAPEE significantly induced apoptosis in these GC cells, with B-cell lymphoma-2 (BCL-2) associated X protein (BAX)/BCL-2 antagonist killer 1 (BAK) likely mediating CAPEE-induced apoptosis. Furthermore, CAPEE induced G0/G1 phase cell cycle arrest in human GC cells via activation of the deoxyribonucleic acid (DNA) damage-p21-cyclin D1/cyclin-dependent kinase 4 (CDK4) signaling axis, and increased Fe2+, lipid peroxides and reactive oxygen species (ROS) levels, thereby inducing ferroptosis. Ribonucleic acid (RNA) sequencing, real-time quantitative polymerase chain reaction (RT-qPCR), and Western blotting analyses revealed CAPEE-mediated upregulation of heme oxygenase-1 (HO-1) in human GC cells. RNA interference studies demonstrated that HO-1 knockdown reduced CAPEE sensitivity and inhibited CAPEE-induced ferroptosis in human GC cells. Additionally, CAPEE administration exhibited robust in vivo anti-GC activity without significant toxicity in nude mice while inhibiting tumor cell growth and promoting apoptosis in tumor tissues. These findings indicate that CAPEE suppresses human GC cell growth through upregulation of the DNA damage-p21-cyclin D1/CDK4 signaling axis and HO-1-mediated ferroptosis, suggesting its potential as a candidate drug for GC treatment.
Animals
;
Humans
;
Mice
;
Antineoplastic Agents, Phytogenic
;
Apoptosis/drug effects*
;
Cell Line, Tumor
;
Cyclin D1/genetics*
;
Cyclin-Dependent Kinase 4/genetics*
;
DNA Damage/drug effects*
;
Drugs, Chinese Herbal/pharmacology*
;
Ferroptosis/drug effects*
;
G1 Phase Cell Cycle Checkpoints/drug effects*
;
Heme Oxygenase-1/genetics*
;
Mice, Inbred BALB C
;
Mice, Nude
;
Plant Extracts/pharmacology*
;
Stomach Neoplasms/physiopathology*
;
Thymelaeaceae/chemistry*
;
Up-Regulation/drug effects*
7.Astragalus Promotes Osteogenic Differentiation of hBMSCs and Alleviates Osteoporosis by Targeting SOX11 Via miR-181d-5p.
Yuan XIAO ; Yong Li SITU ; Ting Ting WANG ; Shang KONG ; Jiang Qi LIU ; Hong NIE
Biomedical and Environmental Sciences 2025;38(10):1287-1301
OBJECTIVE:
This study aimed to investigate the effect of Astragalus (AST) on osteoporosis (OP) and the downstream mechanisms.
METHODS:
Human bone marrow-derived mesenchymal stem cells (hBMSCs) were induced to differentiate into osteogenic cells. After transfection with relevant plasmids, cell proliferation, cell cycle progression, and apoptosis were assessed. Alizarin red staining was used to detect calcium nodules in the cells, alkaline phosphatase (ALP) staining was used to detect ALP activity in the cells, and quantitative reverse transcription-polymerase chain reaction and western blotting were used to determine RUNX2 and Osterix expression levels. An OP rat model was established using ovariectomy and micro-computed tomography scanning. Hematoxylin and eosin staining and Masson's trichrome staining were used to evaluate the pathological conditions of bone tissues, while immunohistochemistry was conducted to detect RUNX2 in bone tissues.
RESULTS:
AST promoted the osteogenic differentiation of BMSCs, reduced miR-181d-5p expression levels, and increased SOX11 expression levels. Restoring miR-181d-5p expression or reducing SOX11 expression levels reversed the effects of AST on the osteogenic differentiation of hBMSCs. miR-181d-5p was found to target SOX11 in hBMSCs. AST improved OP in rats, and miR-181d-5p overexpression or SOX11 inhibition reversed the therapeutic effects of AST on OP in rats.
CONCLUSION
AST promoted the osteogenic differentiation of hBMSCs and alleviated OP by targeting SOX11 via miR-181d-5p.
Osteogenesis/drug effects*
;
Animals
;
MicroRNAs/genetics*
;
Mesenchymal Stem Cells/drug effects*
;
Osteoporosis/drug therapy*
;
Humans
;
Cell Differentiation/drug effects*
;
Astragalus Plant/chemistry*
;
Rats
;
Rats, Sprague-Dawley
;
Female
;
SOXC Transcription Factors/genetics*
;
Plant Extracts/pharmacology*
;
Cells, Cultured
;
Drugs, Chinese Herbal/pharmacology*
8.Celastrus orbiculatus Extract Inhibits Immune Inflammatory Thrombotic State of B-Lymphoma.
Miao ZHU ; Qing-Qing SHI ; Jun NI ; Wei WU ; Xing SUN ; Mei SUN ; Kai-Lin XU ; Yan-Qing LIU ; Jian GU ; Hao GU
Chinese journal of integrative medicine 2024;30(11):1018-1026
OBJECTIVE:
To investigate the inhibitory effect of Celastrus orbiculatus extracts (COE) on the proliferation of lymphoma cells and the immune regulation ability on inflammation and thrombophilia in vivo.
METHODS:
The 38B9 lymphoma cells were treated with COE (160 µ g/mL) and CTX (25 µ mol/L). The apoptosis rate and cell cycle of each group were detected by flow cytometry. The secretion of inflammatory factors, including interleukin (IL)-6, IL-10, and tumor necrosis factor α (TNF-α), in cell supernatant was detected by enzyme-linked immunosorbent assay (ELISA). In vivo, BALB/c mice were subcutaneously injected with 38B9 lymphoma cells to establish lymphoma model. COE (3 mg·kg-1·d-1) and CTX (40 mg·kg-1·d-1) were administered to the model mice, respectively. The expression of plasma inflammatory factors (IL-6, IL-10 and TNF-α) and thrombus indexes, including D-dimer (D-D), von Willebrand factor (vWF) and tissue factor (TF), were detected by ELISA before tumor bearing (1 d), after tumor formation (14 d) and after intervention (21 d). PicoGreen dsDNA was used to detect the level of serum neutrophil extracellular traps (NETs). Flow cytometry was used to detect the expression of platelet activation marker calcium-dependent lectin-like receptor 2 (CLEC-2). The tumor growth and survival of mice were recorded.
RESULTS:
The 38B9 lymphoma cells were apoptotic after the intervention of COE and CTX. The ratio of G2-M phase cells decreased in COE intervented cells compared with the control cells (P<0.05), and S phase cells decreased in CTX intervented cells (P<0.05). Also, the secretion level of IL-6 was significantly reduced after COE or CTX intervention (P<0.05), and IL-10 was significantly increased (P<0.05). Furthermore, the tumor mass was reduced, and the median survival time was longer in COE and CTX intervented tumor-bearing mice than in non-intervented mice. The significantly lower levels of TNF-α, IL-6, NETs, TF, DD and CLEC-2, as well as higher IL-10 were observed in COE and CTX treatment mice in comparision with the control mice (P<0.05).
CONCLUSION
COE has a mild and stable anti-tumor effect, which can reduce the secretion of inflammatory factors by lymphoma cells and regulate thrombophilic state caused by tumor inflammatory microenvironment.
Animals
;
Plant Extracts/pharmacology*
;
Mice, Inbred BALB C
;
Thrombosis/drug therapy*
;
Celastrus/chemistry*
;
Cell Line, Tumor
;
Lymphoma, B-Cell/pathology*
;
Apoptosis/drug effects*
;
Inflammation/pathology*
;
Cell Proliferation/drug effects*
;
Mice
;
Cell Cycle/drug effects*
;
Male
;
Cytokines/metabolism*
;
Inflammation Mediators/metabolism*
9.A herbal pair of Scutellaria barbata D. Don and Scleromitrion diffusum (Willd.) R.J. Wang induced ferroptosis in ovarian cancer A2780 cells via inducing heme catabolism and ferritinophagy.
Zhen WANG ; Min LIU ; Guang-Xing LI ; Liu ZHANG ; Kai-Yue DING ; Si-Qi LI ; Bing-Qing GAO ; Peng CHEN ; Hyok-Chol CHOE ; Lun-Yue XIA ; Yu-Tong YANG ; Yi LIU ; Xue SUI ; Jun-Nan MA ; Lin ZHANG
Journal of Integrative Medicine 2024;22(6):665-682
OBJECTIVE:
Despite the combination of Scutellaria barbata D. Don and Scleromitrion diffusum (Willd.) R.J. Wang (SB-SD) being a recognized Chinese medicinal herbal pair that is commonly used in the treatment of ovarian cancer, there is a poor understanding of their pharmacological mechanisms. This study examines the antitumor properties and potential mechanisms of SB-SD on human ovarian cancer A2780 cells through a multi-omics approach, establishing a pharmacological basis for clinical utilization.
METHODS:
A range of mass ratios and reagents were used in the hot reflux extraction of SB-SD. The inhibitory effect of the SB-SD extracts on A2780 cell proliferation was assessed using the cell-counting kit 8 assay. A zebrafish tumor implantation model was used to evaluate the effects of SB-SD extracts on tumor growth and metastasis in vivo. Transcriptomics and proteomics were used to investigate alterations in biological pathways in A2780 cells after treatment with different concentrations of SB-SD extract. Cell cycle, cell apoptosis, intracellular free iron concentration, intracellular reactive oxygen species (ROS) concentration, malondialdehyde (MDA), and mitochondrial membrane potential were measured. Real-time quantitative reverse transcription polymerase chain reaction and Western blotting were utilized to investigate the effects of heme catabolism and ferritinophagy on ferroptosis induced by SB-SD extract in A2780 cells.
RESULTS:
The 70% ethanol extract of SB-SD (a mass ratio of 4:1) inhibited A2780 cell proliferation significantly with a half maximal inhibitory concentration of 660 μg/mL in a concentration- and time-dependent manner. Moreover, it effectively suppressed tumor growth and metastasis in a zebrafish tumor implantation model. SB-SD extract induced the accumulation of free iron, ROS, MDA, and mitochondrial damage in A2780 cells. The mechanisms might involve the upregulated expression of ferritinophagy-related genes microtubule-associated protein 1 light chain 3, autophagy-related gene 5, and nuclear receptor coactivator 4.
CONCLUSION
SB-SD extract effectively inhibited the development of ovarian cancer both in vitro and in vivo. Its mechanism of action involved inducing ferroptosis by facilitating heme catabolism and ferritinophagy. This herbal pair holds promise as a potential therapeutic option for ovarian cancer treatment and may be utilized in combination with routine treatment to improve the treatment outcomes of ovarian cancer patients. Please cite this article as: Wang Z, Liu M, Li GX, Zhang L, Ding KY, Li SQ, Gao BQ, Chen P, Choe HC, Xia LY, Yang YT, Liu Y, Sui X, Ma JN, Zhang L. A herbal pair of Scutellaria barbata D. Don and Scleromitrion diffusum (Willd.) R.J. Wang induced ferroptosis in ovarian cancer A2780 cells via inducing heme catabolism and ferritinophagy. J Integr Med. 2024; 22(6): 666-683.
Ferroptosis/drug effects*
;
Female
;
Humans
;
Animals
;
Scutellaria/chemistry*
;
Ovarian Neoplasms/genetics*
;
Zebrafish
;
Cell Line, Tumor
;
Ferritins/genetics*
;
Plant Extracts/pharmacology*
;
Heme/metabolism*
;
Drugs, Chinese Herbal/pharmacology*
;
Cell Proliferation/drug effects*
;
Reactive Oxygen Species/metabolism*
;
Antineoplastic Agents, Phytogenic/pharmacology*
;
Autophagy/drug effects*
;
Apoptosis/drug effects*
10.Flavonoid-Rich Extract of Oldenlandia diffusa (Willd.) Roxb. Inhibits Gastric Cancer by Activation of Caspase-Dependent Mitochondrial Apoptosis.
Jia-Yin LING ; Qiu-Lan WANG ; Hao-Nan LIANG ; Qing-Bo LIU ; Dong-Hong YIN ; Li LIN
Chinese journal of integrative medicine 2023;29(3):213-223
OBJECTIVE:
To evaluate the apoptosis and cycle arrest effects of Oldenlandia diffusa flavonoids on human gastric cancer cells, determine the action mechanisms in association with the mitochondrial dependent signal transduction pathway that controls production of reactive oxygen species (ROS), and evaluate the pharmacodynamics of a mouse xenotransplantation model to provide a reference for the use of flavonoids in prevention and treatment of gastric cancer.
METHODS:
Flavonoids were extracted by an enzymatic-ultrasonic assisted method and purified with D-101 resin. Bioactive components were characterized by high-performance liquid chromatography. Cell lines MKN-45, AGS, and GES-1 were treated with different concentrations of flavonoids (64, 96, 128, 160 µg/mL). The effect of flavonoids on cell viability was evaluated by MTT method, and cell nuclear morphology was observed by Hoechst staining. The apoptosis rate and cell cycle phases were measured by flow cytometry, the production of ROS was detected by laser confocal microscope, the mitochondrial membrane potential (MMP) were observed by fluorescence microscope, and the expression of apoptotic proteins related to activation of mitochondrial pathway were measured by immunoblotting. MKN-45 cells were transplanted into BALB/c nude mice to establish a xenograft tumor model. Hematoxylin and eosin staining was used to reveal the subcutaneous tumor tissue. The tumor volume and tumor weight were measured, the expression levels of proliferation markers proliferating cell nuclear antigen (PCNA) and Ki-67 were detected by immunohistochemistry, and the expression levels of CA72-4 were measured by enzyme linked immunosorbent assay.
RESULTS:
Oldenlandia diffusa flavonoids inhibited proliferation of MKN-45 and AGS human gastric cancer cells, arrested the cell cycle in G1/S phase, induced accumulation of ROS in the process of apoptosis, and altered MMP. In addition, flavonoids increased Apaf-1, Cleaved-Caspase-3, and Bax, and decreased Cyclin A, Cdk2, Bcl-2, Pro-Caspase-9, and Mitochondrial Cytochrome C (P<0.05). The MKN-45 cell mouse xenotransplantation model further clarified the growth inhibitory effect of flavonoids towards tumors. The expression levels of PCNA and Ki-67 decreased in each flavonoid dose group, the expression level of CA72-4 decreased (P<0.05).
CONCLUSION
Flavonoids derived from Oldenlandia diffusa can inhibit proliferation and induce apoptosis of human gastric cancer cells by activating the mitochondrial controlled signal transduction pathway.
Humans
;
Animals
;
Mice
;
Oldenlandia/metabolism*
;
Proliferating Cell Nuclear Antigen
;
Stomach Neoplasms
;
Flavonoids/pharmacology*
;
Reactive Oxygen Species/metabolism*
;
Mice, Nude
;
Ki-67 Antigen
;
Cell Line, Tumor
;
Apoptosis
;
Plant Extracts/pharmacology*
;
Caspases
;
Cell Proliferation

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