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Yang K, Wang JQ, Li K, Chen SN, Yu F. Pseudolaric acid B induces apoptosis associated with the mitochondrial and PI3K/AKT/mTOR pathways in triple‑negative breast cancer. Oncol Rep 2023; 50:193. [PMID: 37711030 PMCID: PMC10535017 DOI: 10.3892/or.2023.8630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 08/18/2023] [Indexed: 09/16/2023] Open
Abstract
Pseudolaric acid B (PAB), a diterpene acid isolated from the root bark of Pseudolarix kaempferi, has been shown to exert strong antitumor properties. The aim of the present study was to investigate the mechanisms underlying the proposed antitumor properties of PAB in the triple‑negative breast cancer cells, MDA‑MB‑231. The cell processes evaluated included cell proliferation by Cell Counting Kit‑8 assay, colony formation and EdU assay, apoptosis by Annexin V‑FITC/PI apoptosis assay, cell migration by Transwell migration assay and invasion by Transwell invasion assay. PAB significantly inhibited the proliferation of MDA‑MB‑231 cells through a mechanism that was considered to be associated with cell cycle arrest at the G2/M phase. There was decreased protein expression levels of CDK1 and cyclin B1 and increased protein expression levels of p53 and p21. However, there were no well‑defined inhibitory effects on the normal breast cell line MCF10A. PAB also triggered apoptosis in a concentration‑dependent manner through the mitochondrial apoptosis pathway. It caused collapse of mitochondrial membrane potential, accumulation of reactive oxygen species and release of cytochrome c, as well as upregulation of cleaved caspase‑3, cleaved caspase‑9, cleaved PARP and Bax, and downregulation of Bcl‑2 and Bcl‑xl. The migration and invasion ability of MDA‑MB‑231 cells were inhibited by decreasing the expression levels of the epithelial‑mesenchymal transition‑related markers N‑cadherin and vimentin and increasing the expression of E‑cadherin. Moreover, the expression levels of PI3K (p110β), phosphorylated (p)‑AKT (ser473) and p‑mTOR (ser2448) were downregulated and LY294002, a PI3K inhibitor, could interact additively with PAB to induce apoptosis of MDA‑MB‑231 cells. Overall, the present results demonstrated that PAB induced apoptosis via mitochondrial apoptosis and the PI3K/AKT/mTOR pathway in triple‑negative breast cancer. It also inhibited cellular proliferation, migration and invasion, suggesting that PAB may be a useful phytomedicine for the treatment of triple‑negative breast cancer.
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Affiliation(s)
- Ke Yang
- Department of Traditional Chinese Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Jun-Qi Wang
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Kai Li
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Su-Ning Chen
- Department of Traditional Chinese Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Fei Yu
- Department of Traditional Chinese Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
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Yin M, Li N, Zhang L, Lin J, Wang Q, Gu L, Zheng H, Zhao G, Li C. Pseudolaric Acid B Ameliorates Fungal Keratitis Progression by Suppressing Inflammation and Reducing Fungal Load. ACS Infect Dis 2023; 9:1196-1205. [PMID: 37141176 DOI: 10.1021/acsinfecdis.2c00536] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
This study aimed to determine the mechanisms of antifungal and anti-inflammation effects of pseudolaric acid B (PAB) on Aspergillus fumigatus (A. fumigatus) keratitis. In vitro MIC assay and crystal violet staining were conducted to evaluate the efficacy of PAB against A. fumigatus. PAB inhibited A. fumigatus growth and inhibited the formation of fungal biofilms in a dose-dependent manner. Molecular docking analysis revealed that PAB possesses strong binding properties with Rho1 of A. fumigatus, which is devoted to encoding (1,3)-β-d-glucan of A. fumigatus. RT-PCR results also showed that Rho1 was inhibited by PAB. In vivo, PAB treatment reduced clinical scores, fungal load, and macrophage infiltration, which were increased by A. fumigatus in mice corneas. In addition, PAB treatment suppressed the expression of Mincle, p-Syk, and cytokines (TNF-α, MIP2, iNOS, and CCL2) in infected corneas and in RAW264.7 cells, which were tested by RT-PCR, Western blot, and enzyme-linked Immunosorbent Assay. Notably, trehalose-6,6-dibehenate, an agonist of Mincle, pretreatment reversed the regulatory function of PAB in RAW 264.7 cells. Moreover, flow cytometry showed that PAB upregulated the ratio of M2/M1 macrophages in A. fumigatus-infected corneas and RAW264.7 cells. In conclusion, PAB produced antifungal activities against A. fumigatus and decreased the inflammatory response in mouse A. fumigatus keratitis.
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Affiliation(s)
- Min Yin
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Na Li
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Lina Zhang
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Jing Lin
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Qian Wang
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Lingwen Gu
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Hengrui Zheng
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Guiqiu Zhao
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Cui Li
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
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3
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Liu Z, Wang N, Meng Z, Lu S, Peng G. Pseudolaric acid B triggers cell apoptosis by activating AMPK/JNK/DRP1/mitochondrial fission pathway in hepatocellular carcinoma. Toxicology 2023:153556. [PMID: 37244295 DOI: 10.1016/j.tox.2023.153556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 05/29/2023]
Abstract
Pseudolaric acid B (PAB), a natural product isolated from the root bark of Pseudolarix kaempferi, has been reported to exert inhibitory effects in various cancers. However, the underlying mechanisms remain largely unclear. In the present study, we investigated the mechanism through which PAB exert its anticancer effects in hepatocellular carcinoma (HCC). PAB inhibited the viability of and induced apoptosis in Hepa1-6 cells in a dose-dependent manner. It disrupted mitochondrial membrane potential (MMP) and impaired ATP production. Furthermore, PAB induced phosphorylation of DRP1 at Ser616 and mitochondrial fission. Blocking DRP1 phosphorylation by Mdivi-1 inhibited mitochondrial fission and PAB-induced apoptosis. Moreover, c-Jun N-terminal kinase (JNK) was activated by PAB, and blocking JNK activity using SP600125 inhibited PAB-induced mitochondrial fission and cell apoptosis. Furthermore, PAB activated AMP-activated protein kinase (AMPK), and inhibiting AMPK by compound C attenuated PAB-stimulated JNK activation and blocked DRP1-dependent mitochondrial fission and apoptosis. Our in vivo data confirmed that PAB inhibited tumor growth and induced apoptosis in an HCC syngeneic mouse model by inducing the AMPK/JNK/DRP1/mitochondrial fission signaling pathway. Furthermore, a combination of PAB and sorafenib showed a synergistic effect in inhibiting tumor growth in vivo. Taken together, our findings highlight a potential therapeutic strategy for HCC.
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Affiliation(s)
- Zhanxu Liu
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China; Laboratory for Tumor Immunology, The First Hospital, Jilin University, Changchun, Jilin, China 130061
| | - Nanya Wang
- The Cancer Center, The First Hospital, Jilin University, Changchun, Jilin, China 130061
| | - Zhaoli Meng
- Laboratory for Tumor Immunology, The First Hospital, Jilin University, Changchun, Jilin, China 130061
| | - Shiying Lu
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China.
| | - Gong Peng
- Laboratory for Tumor Immunology, The First Hospital, Jilin University, Changchun, Jilin, China 130061.
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Zhang J, Agarwal AK, Feng Q, Tripathi SK, Khan IA, Pugh ND. Identification of Botanicals that Unmask β-Glucan from the Cell Surface of an Opportunistic Fungal Pathogen. J Diet Suppl 2023; 21:154-166. [PMID: 37070414 DOI: 10.1080/19390211.2023.2201355] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
Dectin-1 expressed on host immune cells recognizes β-glucans within the cell walls of fungal pathogens and plays an important role in the clearance of fungal infections. However, because β-glucan is masked by an outer layer of mannoproteins, fungal pathogens can evade detection by host immune cells. In this study, a microplate-based screen was developed to identify β-glucan unmasking activity exhibited by botanicals. This screen measures the activity of a reporter gene in response to the transcriptional activation of NF-κB due to the interaction between β-glucan on the fungal cell surface and Dectin-1 present on host immune cells. In this proof-of-concept study, we screened a collection of botanicals (10 plants and some of their reported pure compound actives) used in traditional medicine for their antifungal properties. Several hits were identified in samples that unmasked β-glucan at sub-inhibitory concentrations. The hit samples were confirmed by fluorescent staining with a β-glucan antibody, verifying that the samples identified in the screen did indeed unmask β-glucan. These results indicate that the purported antifungal activities attributed to some botanicals may be due, at least in part, to the presence of compounds that exhibit β-glucan unmasking activity. Enhanced exposure of cell wall β-glucans would allow the host to build resilience against fungal infections by helping the immune system to detect the pathogen and mount a more effective clearance mechanism. This screen, together with direct killing/growth inhibition assays, may therefore serve as a valuable tool for substantiating the use of botanicals in preventing and/or treating fungal infections.
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Affiliation(s)
- Jin Zhang
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Ameeta K Agarwal
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Qin Feng
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Siddharth K Tripathi
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
- Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Nirmal D Pugh
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, USA
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Lu J, Guan H, Wu D, Hu Z, Zhang H, Jiang H, Yu J, Zeng K, Li H, Zhang H, Pan C, Cai D, Yu X. Pseudolaric acid B ameliorates synovial inflammation and vessel formation by stabilizing PPARγ to inhibit NF-κB signalling pathway. J Cell Mol Med 2021; 25:6664-6678. [PMID: 34117708 PMCID: PMC8278075 DOI: 10.1111/jcmm.16670] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 04/10/2021] [Accepted: 05/08/2021] [Indexed: 12/16/2022] Open
Abstract
Synovial macrophage polarization and inflammation are essential for osteoarthritis (OA) development, yet the molecular mechanisms and regulation responsible for the pathogenesis are still poorly understood. Here, we report that pseudolaric acid B (PAB) attenuated articular cartilage degeneration and synovitis during OA. PAB, a diterpene acid, specifically inhibited NF-κB signalling and reduced the production of pro-inflammatory cytokines, which further decreased M1 polarization and vessel formation. We further provide in vivo and in vitro evidences that PAB suppressed NF-κB signalling by stabilizing PPARγ. Using PPARγ antagonist could abolish anti-inflammatory effect of PAB and rescue the activation of NF-κB signalling during OA. Our findings identify a previously unrecognized role of PAB in the regulation of OA and provide mechanisms by which PAB regulates NF-κB signalling through PPARγ, which further suggest targeting synovial inflammation or inhibiting vessel formation at early stage could be an effective preventive strategy for OA.
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Affiliation(s)
- Jiansen Lu
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics·Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Joint Surgery, the Fifth Affiliated Hospital of Southern Medical University Guangdong Province, Guangzhou, China
| | - Hong Guan
- Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics·Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China.,Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Dan Wu
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Zhiqiang Hu
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Hongbo Zhang
- Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics·Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China.,Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Huaji Jiang
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Jingyao Yu
- School of Basic Medical Sciences, Gannan Medical University, Ganzhou, China
| | - Ke Zeng
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Hongyu Li
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Haiyan Zhang
- Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics·Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China.,Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Chenglong Pan
- Department of Joint Surgery, the Fifth Affiliated Hospital of Southern Medical University Guangdong Province, Guangzhou, China
| | - Daozhang Cai
- Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics·Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China.,Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Xiao Yu
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.,Department of Joint Surgery, the Fifth Affiliated Hospital of Southern Medical University Guangdong Province, Guangzhou, China.,Guangdong Provincial Key Lab of Single Cell Technology and Application, Southern Medical University, Guangzhou, China
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6
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Wei SF, He DH, Zhang SB, Lu Y, Ye X, Fan XZ, Wang H, Wang Q, Liu YQ. Identification of pseudolaric acid B as a novel Hedgehog pathway inhibitor in medulloblastoma. Biochem Pharmacol 2021; 190:114593. [PMID: 33964282 DOI: 10.1016/j.bcp.2021.114593] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/02/2021] [Accepted: 05/03/2021] [Indexed: 10/21/2022]
Abstract
Aberrant activation of the Hedgehog (Hh) pathway is implicated in the pathogenesis and development of multiple cancers, especially Hh-driven medulloblastoma (MB). Smoothened (SMO) is a promising therapeutic target of the Hh pathway in clinical cancer treatment. However, SMO mutations frequently occur, which leads to drug resistance and tumor relapse. Novel inhibitors that target both the wild-type and mutant SMO are in high demand. In this study, we identified a novel Hh pathway inhibitor, pseudolaric acid B (PAB), which significantly inhibited the expression of Gli1 and its transcriptional target genes, such as cyclin D1 and N-myc, thus inhibiting the proliferation of DAOY and Ptch1+/- primary MB cells. Mechanistically, PAB can potentially bind to the extracellular entrance of the heptahelical transmembrane domain (TMD) of SMO, based on molecular docking and the BODIPY-cyclopamine binding assay. Further, PAB also efficiently blocked ciliogenesis, demonstrating the inhibitory effects of PAB on the Hh pathway at multiple levels. Thus, PAB may overcome drug-resistance induced by SMO mutations, which frequently occurs in clinical setting. PAB markedly suppressed tumor growth in the subcutaneous allografts of Ptch1+/- MB cells. Together, our results identified PAB as a potent Hh pathway inhibitor to treat Hh-dependent MB, especially cases resistant to SMO antagonists.
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Affiliation(s)
- Su-Fen Wei
- Institute of Clinical Pharmacology, Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Dan-Hua He
- Institute of Clinical Pharmacology, Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Research Center of Chinese Herbal Resources Science and Engineering, School of Pharmaceutical Sciences; Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Shi-Bing Zhang
- Institute of Clinical Pharmacology, Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Yongzhi Lu
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou 510005, China; State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
| | - Xiaowei Ye
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Xiang-Zhen Fan
- Institute of Clinical Pharmacology, Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Hong Wang
- Institute of Clinical Pharmacology, Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Qi Wang
- Institute of Clinical Pharmacology, Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China.
| | - Yong-Qiang Liu
- Institute of Clinical Pharmacology, Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Research Center of Chinese Herbal Resources Science and Engineering, School of Pharmaceutical Sciences; Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
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Yin Z, Cai H, Wang Z, Jiang Y. Pseudolaric Acid B Inhibits Proliferation, Invasion, and Angiogenesis in Esophageal Squamous Cell Carcinoma Through Regulating CD147. Drug Des Devel Ther 2020; 14:4561-4573. [PMID: 33149553 PMCID: PMC7605399 DOI: 10.2147/dddt.s269915] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/18/2020] [Indexed: 12/11/2022]
Abstract
Background Esophageal squamous cell carcinoma (ESCC) is a common malignant tumor of the digestive system. Studies have shown that pseudolaric acid B (PAB) has several pharmacological effects like anti-microtubule, anti-angiogenesis, and antitumor functions, while the effect and mechanism of PAB on esophageal cancer are still unclear. This study was designed to investigate the effects of PAB on ESCC. Methods To study the effects of PAB on the biological function through a series of in vitro and in vivo experiments. Results The results revealed that PAB inhibited the proliferation, invasion, and migration, but promoted the apoptosis of ESCC. Moreover, PAB restrained the growth of cancer cells in vivo and inhibited the angiogenesis of HUVEC in mice with ESCC. CD147 expression was increased in the esophageal squamous cell lines, and interference with CD147 hindered the proliferation, invasion, and migration of ESCC cells, and inhibited the growth and angiogenesis of the esophageal squamous cell line. PAB reduced the expression of CD147 in vivo and in vitro. The expression of MMP2, 3, and 9 was increased after overexpression of CD147, which provided the opportunity to reverse the role of PAB in inhibiting proliferation, invasion, migration, and angiogenesis of ESCC. Discussion The results revealed that PAB inhibited the proliferation, invasion, migration, and angiogenesis of ESCC in vitro and in vivo by CD147. PAB is a promising monomer for therapy of ESCC, providing references for future research on ESCC treatment.
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Affiliation(s)
- Zhe Yin
- Department of Thoracic Surgery, Chongqing University Cancer Hospital, Chongqing 400030, China
| | - Huarong Cai
- Department of Thoracic Surgery, Chongqing University Cancer Hospital, Chongqing 400030, China
| | - Zhiqiang Wang
- Department of Thoracic Surgery, Chongqing University Cancer Hospital, Chongqing 400030, China
| | - Yuequan Jiang
- Department of Thoracic Surgery, Chongqing University Cancer Hospital, Chongqing 400030, China
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Liu C, Wang F, Wang B, Wu T, Wang Y, Huo W, Zhang S, Su Y, Liu J, Liu Y, Yu J. Pseudolaric acid B induces apoptosis in human rhabdomyosarcoma RD cells. Oncol Lett 2020; 20:358. [PMID: 33133258 PMCID: PMC7590441 DOI: 10.3892/ol.2020.12222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 07/30/2020] [Indexed: 11/05/2022] Open
Abstract
Pseudolaric acid B (PAB) is a diterpene-type acid isolated from the root and trunk bark of Pseudolarix kaempferi Gordon of the Pinaceae family that has been demonstrated to induce apoptosis in various cell lines and autophagy in certain cell lines including murine fibrosarcoma L929, human thyroid squamous cell carcinoma SW579 and human lung fibroblast MRC5 cells. However, in human rhabdomyosarcoma RD cells, which are derived from the most common soft tissue sarcoma in children and represent a high-grade neoplasm of a skeletal myoblast type, it is not clear whether PAB induces apoptosis or autophagy. The identification of the exact mechanism of PAB is important for studying its antitumor effects and its potential application in the treatment of human rhabdomyosarcoma. To confirm the inhibitory ability of PAB on RD cells, the inhibitory ratio of PAB was analyzed, and the results of MTT assay demonstrated that PAB inhibited RD cell proliferation. Meanwhile aggregation of the microtubule fibers was found in PAB-treated RD cells compared with that in control-treated cells, which was consistent with previous studies. In addition, PAB inhibited RD cell migration, induced apoptosis and cell cycle arrest at the G2/M phase. These results suggested that the mechanism of PAB-mediated growth inhibition in RD was similar to that reported in the human breast cancer cell line MCF-7 and the neuroglioma cell line A172; however, it was different from that reported in the L929, MRC5 and SW579 cell lines. Additional experiments demonstrated that PAB regulated the activation of caspase-8 and caspase-9 to induce apoptosis and caused an upregulation of phosphorylated H2A histone family member X and cyclin B1 expression in order to induce cell cycle arrest. Therefore, PAB may be considered a potential treatment agent for human rhabdomyosarcoma.
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Affiliation(s)
- Chunyu Liu
- Institute of Virology and AIDS Research, The First Hospital of Jilin University, Jilin University, Changchun, Jilin 130021, P.R. China.,Acupunture Department, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin 130000, P.R. China
| | - Fei Wang
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, Jilin 130000, P.R. China
| | - Bin Wang
- Department of Infectious Diseases, The First Hospital of Jilin University, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Ting Wu
- Neonatal Intensive Care Unit, The First Hospital of Jilin University, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Yue Wang
- Chemistry Department of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin 130000, P.R. China
| | - Wenbo Huo
- Department of Experimental Pharmacology and Toxicology, School of Pharmaceutical Science, Jilin University, Changchun, Jilin 130000, P.R. China
| | - Shuxia Zhang
- Department of Experimental Pharmacology and Toxicology, School of Pharmaceutical Science, Jilin University, Changchun, Jilin 130000, P.R. China
| | - Ying Su
- Department of Experimental Pharmacology and Toxicology, School of Pharmaceutical Science, Jilin University, Changchun, Jilin 130000, P.R. China
| | - Jinming Liu
- Department of Experimental Pharmacology and Toxicology, School of Pharmaceutical Science, Jilin University, Changchun, Jilin 130000, P.R. China
| | - Yumeng Liu
- Department of Experimental Pharmacology and Toxicology, School of Pharmaceutical Science, Jilin University, Changchun, Jilin 130000, P.R. China
| | - Jinghua Yu
- Institute of Virology and AIDS Research, The First Hospital of Jilin University, Jilin University, Changchun, Jilin 130021, P.R. China
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Li Z, Yin H, Chen W, Jiang C, Hu J, Xue Y, Yao D, Peng Y, Hu X. Synergistic Effect of Pseudolaric Acid B with Fluconazole Against Resistant Isolates and Biofilm of Candida tropicalis. Infect Drug Resist 2020; 13:2733-2743. [PMID: 32801807 PMCID: PMC7415455 DOI: 10.2147/idr.s261299] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 07/09/2020] [Indexed: 12/19/2022] Open
Abstract
Purpose Candida tropicalis (C. tropicalis) has emerged as an important fungal pathogen due to its increasing resistance to conventional antifungal agents, especially fluconazole (FLC). Pseudolaric acid B (PAB), a herbal-originated diterpene acid from Pseudolarix kaempferi Gordon, has been reported to possess inhibitory activity against fungus. The present study aims to investigate the antifungal effect of PAB alone and in combination with FLC on planktonic and biofilm cells of C. tropicalis. Methods The antifungal activity of PAB against planktonic isolates was evaluated alone and in combination with FLC using the chequerboard microdilution method and growth curve assay. The anti-biofilm effects were quantified by tetrazolium (XTT) reduction assay, which were further confirmed by scanning electron microscopy (SEM) and fluorescent microscope to observe morphological changes of biofilm treated with PAB and FLC. Results It was revealed that PAB alone exhibited similar inhibitory activity against FLC-resistant and FLC-susceptible strains with median MIC ranging from 8 to 16 µg/mL. When administered in combination, synergism was observed in all (13/13) FLC-resistant and (2/9) FLC-susceptible strains with FICI ranging from 0.070 to 0.375. Moreover, the concomitant use of PAB and FLC exhibited a strong dose-dependent synergistic inhibitory effect on the early and mature biofilm, eliminating more than 80% biofilm formation. SEM found that PAB, different from azoles, could significantly inhibit spore germination and destroy the cell integrity causing cell deformation, swelling, collapse and outer membrane perforation. Conclusion PAB was highly active against FLC-resistant isolates and biofilm of C. tropicalis, particularly when combined with FLC. These findings suggest that PAB may have potential as a novel antifungal agent with different targets from azole drugs.
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Affiliation(s)
- Zhen Li
- Department of Laboratory Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Hongmei Yin
- Department of Laboratory Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Weiqin Chen
- Department of Laboratory Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Cen Jiang
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Jun Hu
- Department of Laboratory Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Yingjun Xue
- Department of Laboratory Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Dongting Yao
- Department of Laboratory Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Yibing Peng
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Xiaobo Hu
- Department of Laboratory Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
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Choi SJ, Ahn CH, Yang IH, Jin B, Lee WW, Kim JH, Ahn MH, Swarup N, Hong KO, Shin JA, Woo NT, Hong SD, Lee JI, Cho SD. Pseudolaric Acid B Induces Growth Inhibition and Caspase-Dependent Apoptosis on Head and Neck Cancer Cell lines through Death Receptor 5. Molecules 2019; 24:E3715. [PMID: 31623058 DOI: 10.3390/molecules24203715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/06/2019] [Accepted: 10/09/2019] [Indexed: 12/24/2022] Open
Abstract
Pseudolaric Acid B (PAB), diterpenoid isolated from the root bark of Pseudolarix kaempferi Gordon tree (Pinaceae), exhibits an anti-proliferative and apoptotic activity in various cancer cell lines but to date, the effects of PAB on head and neck cancer (HNC) cell lines remain to be elucidated. In this study, we showed that PAB significantly inhibited the viability and caspase-dependent apoptosis in HN22 cell line. PAB-induced apoptosis is through inducing death receptor 5 (DR5) together with the increase in the expression of cleaved caspase-8. It also inhibited the proliferations and induced apoptosis through DR5 in other three HNC cell lines (HSC3, Ca9.22, and HSC4). Extending our in vitro findings, we found that ethanol extract of Pseudolarix kaempferi (2.5 mg/kg/day) reduced tumor growth in a xenograft model bearing HN22 cell line without any change in body weight. DR5 were also found to be increased in tumors tissue of PAB-treated mice without any apparent histopathological changes in liver or kidney tissues. Taken together, PAB may be a potential lead compound for chemotherapeutic agents against head and neck cancer.
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Wang Y, Gao H, Wu T, Wang Z, Song F, Chen A, Zhang J, Zhang W, Zhang H, Yu J. Pseudolaric acid B induced autophagy, but not apoptosis, in MRC5 human fibroblast cells. Oncol Lett 2017; 15:863-870. [PMID: 29399151 PMCID: PMC5772809 DOI: 10.3892/ol.2017.7426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 10/18/2017] [Indexed: 01/08/2023] Open
Abstract
Autophagy and apoptosis are closely associated. In previous studies, pseudolaric acid B (PAB), a diterpene acid isolated from the root and trunk bark of Pseudolarix kaempferi Gordon (Pinaceae), was demonstrated to induce apoptosis in various cell lines. However, in L929 murine fibrosarcoma and SW579 human thyroid squamous cell carcinoma cells, only autophagy was induced. In the present study, another cell line, MRC5 human lung fibroblast cells, was identified in which PAB only induced autophagy. The relationship between apoptosis and autophagy subsequent to PAB treatment in MRC5 cells was explored. When autophagy was inhibited by 3-methyladenine (3MA), apoptosis was induced in the PAB-treated MRC5 cells. To study the mechanism for the promotion of apoptosis by 3MA in the PAB-treated cells, the expression of members from the apoptotic signal pathways was assessed. As Bcl-2, Bcl-2 associated X and pro-caspase-9 expression following PAB treatment was not affected by 3MA treatment, it was determined that apoptosis was induced independent of the mitochondrial pathway of apoptosis. As Fas and pro-caspase-8 expression following PAB treatment were not altered by 3MA, it was further determined that the death receptor pathway was not induced. However, the phosphorylation of c-Jun-N-terminal kinase and the expression of pro-caspase-3 were upregulated, and the phosphorylation of extracellular signal-regulated kinase downregulated, by the combination of PAB and 3MA treatment compared with PAB alone. It was also observed that 3MA did not affect the microtubule aggregation ability of PAB. Therefore, inhibiting autophagy in MRC5 cells did not affect the role of PAB in microtubule aggregation, while apoptosis was induced. This may present a strategy to enhance the anti-tumor effects of PAB.
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Affiliation(s)
- Yue Wang
- Research Institute of Virology and AIDS Research, The First Hospital of Jilin University, Jilin University, Changchun, Jilin 130021, P.R. China.,Chemistry of Traditional Chinese Medicine, College of Pharmacy, Changchun University of Chinese Medicine, Changchun, Jilin 130000, P.R. China
| | - Hongmei Gao
- Medicinal Chemistry, College of Pharmacy, Changchun University of Chinese Medicine, Changchun, Jilin 130021, P.R. China
| | - Ting Wu
- Neonatal Intensive Care Unit, The First Hospital of Jilin University, Jilin University, Changchun, Jilin 130000, P.R. China
| | - Zengyan Wang
- Department of Internal Medicine, The First Hospital of Jilin University, Jilin University, Changchun, Jilin 130000, P.R. China
| | - Fengmei Song
- Department of Experimental Pharmacology and Toxicology, School of Pharmacy, Jilin University, Changchun, Jilin 130000, P.R. China
| | - Antian Chen
- College of Medicine, Norman Bethune Health Science Center, Jilin University, Changchun, Jilin 130000, P.R. China
| | - Jing Zhang
- College of Medicine, Norman Bethune Health Science Center, Jilin University, Changchun, Jilin 130000, P.R. China
| | - Wenyan Zhang
- Research Institute of Virology and AIDS Research, The First Hospital of Jilin University, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Hui Zhang
- Chemistry of Traditional Chinese Medicine, College of Pharmacy, Changchun University of Chinese Medicine, Changchun, Jilin 130000, P.R. China
| | - Jinghua Yu
- Research Institute of Virology and AIDS Research, The First Hospital of Jilin University, Jilin University, Changchun, Jilin 130021, P.R. China
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Song Q, Jiang S, Zhang X, Pan C, Lu C, Peng J, Li Q. Radiosensitivity of human ovarian cancer cells is enhanced by pseudolaric acid B due to the inhibition of the Ras/Raf/ERK signaling pathway. Exp Ther Med 2017; 15:685-690. [PMID: 29399072 PMCID: PMC5772519 DOI: 10.3892/etm.2017.5500] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 07/20/2017] [Indexed: 12/20/2022] Open
Abstract
Ovarian cancer has the highest mortality rate among gynecological cancers; the most effective therapy for this cancer is a combination of radiation treatment and chemotherapy. However, radiation resistance is the leading factor associated with treatment failure. The present study aimed to investigate pseudolaric acid B (PAB) as a potential radiosensitizer for the treatment of ovarian cancer. The present study performed MTT and clonogenic assays, and demonstrated that PAB could induce a radiosensitizing effect on SKOV-3 cells. An Annexin V/propidium iodide staining assay revealed that PAB exerted a radiosensitizing effect by inducing SKOV-3 cell apoptosis. In addition, western blot analysis demonstrated that the activity of the Ras/RAF proto-oncogene serine/threonine-protein kinase/extracellular signal-regulated kinase signaling pathway was reduced by combination therapy with PAB and irradiation. In conclusion, the present study establishes PAB as a radiosensitizer, and provides a rational basis for the use of PAB and irradiation as a combination therapy to treat ovarian cancer.
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Affiliation(s)
- Quqing Song
- Department of Gynecological Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
| | - Sheng Jiang
- Department of Gynecological Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
| | - Xinxin Zhang
- Department of Gynecological Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
| | - Chunxia Pan
- Department of Gynecological Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
| | - Chunhua Lu
- Department of Gynecological Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
| | - Jingwei Peng
- Department of Gynecological Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
| | - Qingshui Li
- Department of Gynecological Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
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Liu ML, Sun D, Li T, Chen H. A Systematic Review of the Immune-Regulating and Anticancer Activities of Pseudolaric Acid B. Front Pharmacol 2017; 8:394. [PMID: 28701952 PMCID: PMC5487521 DOI: 10.3389/fphar.2017.00394] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 06/06/2017] [Indexed: 01/01/2023] Open
Abstract
Cortex pseudolaricis, the root bark of Pseudolarix kaempferi Gord, has been used to treat tinea and other skin diseases for the antimicrobial activities in Traditional Chinese Medicine (TCM). Pseudolaric acid B (PAB) has been identified as the major component responsible for the action of C. pseudolaricis. Recently, PAB has been demonstrated to be used as novel treatments for cancer, immune disorders, inflammatory diseases, and immunosuppression. However, the mechanisms through which PAB exerts its properties are not understood well, and little attention in the literature has been given to review its pharmacological activities before. In this review, we performed a systematic summary of the literature with respect to the anticancer, immunosuppressive and anti-inflammatory properties of PAB and its derivatives. Currently available data suggest that PAB is a promising immunosuppressive and anti-inflammatory agent candidate and should be explored further in cancer treatment and prevention.
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Affiliation(s)
- Mei-Lun Liu
- Department of Pharmacognosy and Pharmaceutics, Logistics University of the Chinese People's Armed Police ForceTianjin, China
| | - Dan Sun
- Department of Pharmacognosy and Pharmaceutics, Logistics University of the Chinese People's Armed Police ForceTianjin, China
| | - Tan Li
- Department of Pathogen Biology and Immunology, Logistics University of the Chinese People's Armed Police ForceTianjin, China
| | - Hong Chen
- Department of Pharmacognosy and Pharmaceutics, Logistics University of the Chinese People's Armed Police ForceTianjin, China
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Yu J, Chen C, Xu T, Yan M, Xue B, Wang Y, Liu C, Zhong T, Wang Z, Meng X, Hu D, Yu X. Pseudolaric acid B activates autophagy in MCF-7 human breast cancer cells to prevent cell death. Oncol Lett 2016; 11:1731-1737. [PMID: 26998069 DOI: 10.3892/ol.2016.4103] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 11/24/2015] [Indexed: 01/08/2023] Open
Abstract
Pseudolaric acid B (PAB) has been demonstrated to exert antitumor effects in MCF-7 human breast cancer cells. The present study aimed to investigate the mechanism of resistance to PAB-induced cell death. Following incubation with 4 µM of PAB for 3 days, the majority of MCF-7 cells became senescent, while some retained the same morphology as control cells, as assessed using a senescence detection kit. Additionally, 36 h of treatment with 4 µM of PAB increased the positive staining of autophagy markers, as shown by monodansylcadaverine and acridine orange staining. Western blot analysis indicated that this treatment also increased expression of the autophagy-related proteins Beclin-1 and microtubule-associated protein 1 light chain 3. Furthermore, treatment with PAB and the autophagy inhibitor 3-methyl adenine significantly decreased the ratio of autophagy, as assessed by flow cytometric analysis of monodansylcadaverine staining density (P<0.001), and increased the ratio of cell death, as assessed by MTT analysis (P<0.001). This indicated that autophagy promotes cell survival as a resistance mechanism to PAB treatment. Additionally, the present study demonstrated that PAB treatment did not affect the mitochondrial membrane potential, which may be related to autophagy. Increased Bcl-2 expression may explain why PAB did not affect the mitochondrial membrane potential. A Bcl-2 binding test demonstrated that PAB treatment inhibits the binding of Bcl-2 and Beclin-1, which may free Beclin-1 to participate in autophagy. Therefore, the present study demonstrated that autophagy may be activated by PAB treatment in human breast cancer MCF-7 cells, contributing to resistance to cell death.
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Affiliation(s)
- Jinghua Yu
- Institute of Virology and AIDS Research, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Chunhai Chen
- Department of Acupunture, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin 130000, P.R. China
| | - Tianyang Xu
- Department of Drug Analysis and Analytical Chemistry, Changchun University of Chinese Medicine, Changchun, Jilin 130117, P.R. China
| | - Minghui Yan
- Department of Biomedical Engineering, College of Pharmacy, Jilin University, Changchun, Jilin 130000, P.R. China
| | - Bianbian Xue
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Ying Wang
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Chunyu Liu
- Department of Acupunture, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin 130000, P.R. China
| | - Ting Zhong
- Department of Medicinal Chemistry, Changchun University of Chinese Medicine, Changchun, Jilin 130117, P.R. China
| | - Zengyan Wang
- Department of Internal Medicine, The First Hospital of Jilin University, Changchun, Jilin 130000, P.R. China
| | - Xianying Meng
- Department of Thyroid Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Donghua Hu
- Department of Medicinal Chemistry, Changchun University of Chinese Medicine, Changchun, Jilin 130117, P.R. China
| | - Xiaofang Yu
- Institute of Virology and AIDS Research, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China; Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
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