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Chen YY, Lo CF, Chiu TY, Hsu CY, Yeh TK, Chen CP, Huang CL, Huang CY, Wang MH, Huang YC, Ho HH, Chao YS, Shih JC, Tsou LK, Chen CT. BPRDP056, a novel small molecule drug conjugate specifically targeting phosphatidylserine for cancer therapy. Transl Oncol 2020; 14:100897. [PMID: 33069101 PMCID: PMC7569237 DOI: 10.1016/j.tranon.2020.100897] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/20/2020] [Accepted: 09/22/2020] [Indexed: 12/25/2022] Open
Abstract
Zinc(II)-dipicolylamine (Zn-DPA) has been shown to specifically identify and bind to phosphatidylserine (PS), which exists in bulk in the tumor microenvironment. BPRDP056, a Zn-DPA-SN38 conjugate was designed to provide PS-targeted drug delivery of a cytotoxic SN38 to the tumor microenvironment, thereby allowing a lower dosage of SN38 that induces apoptosis in cancer cells. Micro-Western assay showed that BPRDP056 exhibited apoptotic signal levels similar to those of CPT-11 in the treated tumors growing in mice. Pharmacokinetic study showed that BPRDP056 has excellent systemic stability in circulation in mice and rats. BPRDP056 is accumulated in tumors and thus increases the cytotoxic effects of SN38. The in vivo antitumor activities of BPRDP056 have been shown to be significant in subcutaneous pancreas, prostate, colon, liver, breast, and glioblastoma tumors, included an orthotopic pancreatic tumor, in mice. BPRDP056 shrunk tumors at a lower (~20% only) dosing intensity of SN38 compared to that of SN38 conjugated in CPT-11 in all tumor models tested. A wide spectrum of antitumor activities is expected to treat all cancer types of PS-rich tumor microenvironments. BPRDP056 is a first-in-class small molecule drug conjugate for cancer therapy.
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Affiliation(s)
- Yun-Yu Chen
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC
| | - Chen-Fu Lo
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC
| | - Tai-Yu Chiu
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC
| | - Chia-Yu Hsu
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC
| | - Teng-Kuang Yeh
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC
| | - Ching-Ping Chen
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC
| | - Chen-Lung Huang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC
| | - Chung-Yu Huang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC
| | - Min-Hsien Wang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC
| | - Yu-Chen Huang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC
| | - Hsuan-Hui Ho
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC
| | - Yu-Sheng Chao
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC
| | - Joe C Shih
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC
| | - Lun K Tsou
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC.
| | - Chiung-Tong Chen
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan, ROC.
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Application of the buccal micronucleus cytome assay on child population exposed to sinus X-ray. Eur J Radiol 2020; 129:109143. [PMID: 32593079 DOI: 10.1016/j.ejrad.2020.109143] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 05/27/2020] [Accepted: 06/16/2020] [Indexed: 02/04/2023]
Abstract
PURPOSE Diagnostic X-ray examinations of paranasal sinuses use a low-dose ionizing radiation to achieve medically indicated purposes. The effects of low-dose radiation are still controversial, making it a highly prioritized field of research. As there is a need to evaluate the effects of low-dose ionizing radiation and that children might be a more vulnerable population, we performed simultaneous physical dosimetry and buccal cell micronucleus cytome assay on pediatric patients before and after an X-ray examination of the sinuses. METHODS The study comprised 20 subjects aged 11.9 ± 3.6 years, and BMI < 25 kg/m2. Physical dosimetry was performed using radiophotoluminiscent (RPL) glass dosimeters placed on four positions on the head. The buccal cell micronucleus cytome assay was performed before and 14 ± 1 days after the X-ray exam, to monitor DNA damaging, replicative, cytostatic, and cell death effects. RESULTS The doses in the primary beam ranged 371-1106 μGy and were several fold higher than at the other positions on the head. As for biological changes, we did not observe any DNA damaging effects. However, a significant increase in cells with condensed chromatin was observed, indicating more cells undergoing early stages of apoptosis. We also observed inter-individual differences between the subjects. A correlation between the doses detected and biological effects was not observed. CONCLUSION Although we did not observe significant increase in DNA damage, further studies are needed to increase the statistical power of the results and ensure patients' safety and optimal health care.
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Zhang ZY, Fang YJ, Luo YJ, Lenahan C, Zhang JM, Chen S. The role of medical gas in stroke: an updated review. Med Gas Res 2020; 9:221-228. [PMID: 31898607 PMCID: PMC7802415 DOI: 10.4103/2045-9912.273960] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Medical gas is a large class of bioactive gases used in clinical medicine and basic scientific research. At present, the role of medical gas in neuroprotection has received growing attention. Stroke is a leading cause of death and disability in adults worldwide, but current treatment is still very limited. The common pathological changes of these two types of stroke may include excitotoxicity, free radical release, inflammation, cell death, mitochondrial disorder, and blood-brain barrier disruption. In this review, we will discuss the pathological mechanisms of stroke and the role of two medical gases (hydrogen and hydrogen sulfide) in stroke, which may potentially provide a new insight into the treatment of stroke.
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Affiliation(s)
- Ze-Yu Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - Yuan-Jian Fang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - Yu-Jie Luo
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - Cameron Lenahan
- Burrell College of Osteopathic Medicine, Las Cruces, NM; Center for Neuroscience Research, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - Jian-Ming Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - Sheng Chen
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
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Karges J, Yempala T, Tharaud M, Gibson D, Gasser G. A Multi-action and Multi-target Ru II -Pt IV Conjugate Combining Cancer-Activated Chemotherapy and Photodynamic Therapy to Overcome Drug Resistant Cancers. Angew Chem Int Ed Engl 2020; 59:7069-7075. [PMID: 32017379 DOI: 10.1002/anie.201916400] [Citation(s) in RCA: 126] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/28/2020] [Indexed: 12/21/2022]
Abstract
PtII complexes are commonly used to treat cancer. To reduce their side effects and improve their pharmacological properties, PtIV complexes are being developed as prodrug candidates that are activated by reduction in cancer cells. Concomitantly, RuII polypyridine complexes have gained much attention as photosensitizers for use in photodynamic therapy due to their attractive characteristics. In this article, a novel PtIV -RuII conjugate, which combines cancer activated chemotherapy with PDT, is presented. Upon entering the cancer cell, the PtIV centre is reduced to PtII and the axial ligands including the RuII complex and phenylbutyrate are released. As each component has its individual targets, the conjugate exerts a multi-target and multi-action effect with (photo-)cytotoxicity values upon irradiation up to 595 nm in the low nanomolar range in various (drug resistant) 2D monolayer cancer cells and 3D multicellular tumour spheroids.
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Affiliation(s)
- Johannes Karges
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005, Paris, France
| | - Thirumal Yempala
- Institute for Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, 91120, Jerusalem, Israel
| | - Mickaël Tharaud
- Université de Paris, Institut de Physique du Globe de Paris, CNRS, 75005, Paris, France
| | - Dan Gibson
- Institute for Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, 91120, Jerusalem, Israel
| | - Gilles Gasser
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005, Paris, France
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Karges J, Yempala T, Tharaud M, Gibson D, Gasser G. A Multi‐action and Multi‐target Ru
II
–Pt
IV
Conjugate Combining Cancer‐Activated Chemotherapy and Photodynamic Therapy to Overcome Drug Resistant Cancers. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916400] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Johannes Karges
- Chimie ParisTech PSL University CNRS Institute of Chemistry for Life and Health Sciences Laboratory for Inorganic Chemical Biology 75005 Paris France
| | - Thirumal Yempala
- Institute for Drug Research School of Pharmacy The Hebrew University of Jerusalem 91120 Jerusalem Israel
| | - Mickaël Tharaud
- Université de Paris Institut de Physique du Globe de Paris CNRS 75005 Paris France
| | - Dan Gibson
- Institute for Drug Research School of Pharmacy The Hebrew University of Jerusalem 91120 Jerusalem Israel
| | - Gilles Gasser
- Chimie ParisTech PSL University CNRS Institute of Chemistry for Life and Health Sciences Laboratory for Inorganic Chemical Biology 75005 Paris France
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Zhang X, Wang Y, Wei G, Zhao J, Yang G, Zhou S. Stepwise dual targeting and dual responsive polymer micelles for mitochondrion therapy. J Control Release 2020; 322:157-169. [PMID: 32169533 DOI: 10.1016/j.jconrel.2020.03.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 02/24/2020] [Accepted: 03/07/2020] [Indexed: 12/31/2022]
Abstract
Methods to selectively destroy mitochondria of tumor cells and induce cell apoptosis with nanomedicine constitute challenges in cancer therapy. In the present study, we develop cell membrane/mitochondria dual targeting and pH/redox dual responsive nanoparticles for mitochondrion therapy. The nanoparticles are fabricated by the self-assembly of triphenylphosphonium (TPP) grafted poly(ethylene glycol)(PEG)-poly(d,l-lactide)(PLA) copolymers (TPP-PEG-ss-PLA) using disulfide bonds as the intermediate linkers. To shield the surface positive charge of the nanoparticles from TPP composition, chondroitin sulfate (CS) is employed to coat the nanoparticles, and this prolongs blood circulation while endowing an active targeting ability to the cell membrane. In acidic lyso-somes/endosomes, the negatively charged CS layer falls away to expose the TPP component. Subsequently, in the cyto-plasm, the nanoparticles can anchor to the mitochondrial outer membrane by TPP-mediated targeting, thereby inducing a decrease in the membrane potential and opening of the permeability transition pore. Thus, the overproduction of ROS in the mitochondria promotes cell apoptosis. The released DOX directly diffuse into the mitochondria, thereby resulting in mito-chondrial DNA damage. Therefore, the nanoparticles exhibit significant potential in terms of a new avenue for mitochondrion therapy in cancer treatment.
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Affiliation(s)
- Xiaobin Zhang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China; Radiation Chemistry Department, Sichuan Institute of Atomic Energy, Chengdu, Sichuan 610101, PR China; Irradiation Preservation Key Laboratory of Sichuan Province, Chengdu, Sichuan 610101, PR China
| | - Yi Wang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China
| | - Guoqing Wei
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China
| | - Jingya Zhao
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China
| | - Guang Yang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China
| | - Shaobing Zhou
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, PR China.
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Agbana YL, Ni Y, Zhou M, Zhang Q, Kassegne K, Karou SD, Kuang Y, Zhu Y. Garlic-derived bioactive compound S-allylcysteine inhibits cancer progression through diverse molecular mechanisms. Nutr Res 2020; 73:1-14. [DOI: 10.1016/j.nutres.2019.11.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 10/18/2019] [Accepted: 11/01/2019] [Indexed: 01/17/2023]
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COX-2 Signaling in the Tumor Microenvironment. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1277:87-104. [PMID: 33119867 DOI: 10.1007/978-3-030-50224-9_6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Tumorigenesis is a multistep, complicated process, and many studies have been completed over the last few decades to elucidate this process. Increasingly, many studies have shifted focus toward the critical role of the tumor microenvironment (TME), which consists of cellular players, cell-cell communications, and extracellular matrix (ECM). In the TME, cyclooxygenase-2 (COX-2) has been found to be a key molecule mediating the microenvironment changes. COX-2 is an inducible form of the enzyme that converts arachidonic acid into the signal transduction molecules (thromboxanes and prostaglandins). COX-2 is frequently expressed in many types of cancers and has been closely linked to its occurrence, progression, and prognosis. For example, COX-2 has been shown to (1) regulate tumor cell growth, (2) promote tissue invasion and metastasis, (3) inhibit apoptosis, (4) suppress antitumor immunity, and (5) promote sustainable angiogenesis. In this chapter, we summarize recent advances of studies that have evaluated COX-2 signaling in TME.
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Meng T, Liu T, Qin QP, Chen ZL, Zou HH, Wang K, Liang FP. Mitochondria-localizing dicarbohydrazide Ln complexes and their mechanism of in vitro anticancer activity. Dalton Trans 2020; 49:4404-4415. [DOI: 10.1039/d0dt00210k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Dicarbohydrazide Ln complexes trigger SK-OV-3/DDP cell apoptosis via a mitochondrial dysfunction pathway.
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Affiliation(s)
- Ting Meng
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin 541004
- PR China
| | - Tong Liu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin 541004
- PR China
| | - Qi-Pin Qin
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin 541004
- PR China
| | - Zi-Lu Chen
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin 541004
- PR China
| | - Hua-Hong Zou
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin 541004
- PR China
| | - Kai Wang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin 541004
- PR China
| | - Fu-Pei Liang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin 541004
- PR China
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Akhtar MJ, Ahamed M, Alhadlaq H, Alrokayan S. Toxicity Mechanism of Gadolinium Oxide Nanoparticles and Gadolinium Ions in Human Breast Cancer Cells. Curr Drug Metab 2019; 20:907-917. [DOI: 10.2174/1389200220666191105113754] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Revised: 10/03/2019] [Accepted: 10/16/2019] [Indexed: 12/19/2022]
Abstract
Background:
Due to the potential advantages of Gadolinium Nanoparticles (NPs) over gadolinium elements,
gadolinium based NPs are currently being explored in the field of MRI. Either in elemental form or nanoparticulate
form, gadolinium toxicity is believed to occur due to the deposition of gadolinium ion (designated as Gd3+ ion
or simply G ion).
Objective:
There is a serious lack of literature on the mechanisms of toxicity caused by either gadolinium-based NPs
or ions. Breast cancer tumors are often subjected to MRIs, therefore, human breast cancer (MCF-7) cells could serve
as an appropriate in vitro model for the study of Gadolinium Oxide (GO) NP and G ion.
Methods:
Cytotoxicity and oxidative damage was determined by quantifying cell viability, cell membrane damage,
and Reactive Oxygen Species (ROS). Intracellular Glutathione (GSH) was measured along with cellular Total Antioxidant
Capacity (TAC). Autophagy was determined by using Monodansylcadaverine (MDC) and Lysotracker Red
(LTR) dyes in tandem. Mitochondrial Membrane Potential (MMP) was measured by JC-1 fluorescence. Physicochemical
properties of GO NPs were characterized by field emission transmission electron microscopy, X-ray diffraction,
and energy dispersive spectrum.
Results:
A time- and concentration-dependent toxicity and oxidative damage was observed due to GO NPs and G
ions. Bax/Bcl2 ratios, FITC-7AAD double staining, and cell membrane blebbing in phase-contrast images all suggested
different modes of cell death induced by NPs and ions.
Conclusion:
In summary, cell death induced by GO NPs with high aspect ratio favored apoptosis-independent cell
death, whereas G ions favored apoptosis-dependent cell death.
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Affiliation(s)
- Mohd Javed Akhtar
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh, Saudi Arabia
| | - Maqusood Ahamed
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh, Saudi Arabia
| | - Hisham Alhadlaq
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh, Saudi Arabia
| | - Salman Alrokayan
- Department of Biochemistry, College of Sciences, King Saud University, Riyadh, Saudi Arabia
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Akhtar MJ, Ahamed M, Alhadlaq HA, Kumar S, Alrokayan SA. Mitochondrial dysfunction, autophagy stimulation and non-apoptotic cell death caused by nitric oxide-inducing Pt-coated Au nanoparticle in human lung carcinoma cells. Biochim Biophys Acta Gen Subj 2019; 1864:129452. [PMID: 31676295 DOI: 10.1016/j.bbagen.2019.129452] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 09/30/2019] [Accepted: 10/14/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND Reactive oxygen species (ROS)-mediated cancer therapeutic has been at higher appreciation than those mediated by reactive nitrogen species. Cytotoxic mechanism of a novel nitric oxide (NO) inducing-Pt coated Au nanoparticle (NP) has been comparatively studied with the well-established ROS inducing Pt-based anticancer drug cisplatin in human lung A549 carcinoma cells. METHODS Cytotoxicity was evaluated by MTT assay, lactate dehydrogenase (LDH) release, thiobarbituric acid substances (TBARS) and C11-Boron dipyrromethene (BODIPY). ROS (O2·- and H2O2) was measured with dihydroethidium (DHE) and H2O2-specific sensor. Nitric oxide (NO) and mitochondrial dysfunction were evaluated respectively by NO-specific probe DAR-1 and JC-1. Autophagy was determined by lysotracker (LTR) and monodansylcadaverine (MDC) applied tandemly whereas apoptosis/necrosis by Hoechst/PI and caspase 3 activity. RESULTS IC50 (concentration that inhibited cell viability by 50%) of Pt coated Au NP came to be 0.413 μM whereas IC50 of cisplatin came out to 86.5 μM in A549 cells treated for 24 h meaning NPs toxicity was over 200 times higher than cisplatin. However, no significant stimulation of intracellular ROS was observed at the IC50 of Pt coated Au NPs in A549 cells. However, markers like LDH release, TBARS, BODIPY and ROS were significantly higher due to cisplatin in comparison to Pt coated Au NP. CONCLUSIONS Pt coated Au NP caused NO-dependent mitochondrial dysfunction and autophagy. Mode of cell death due to NP was much different from ROS-inducing cisplatin. GENERAL SIGNIFICANCE Pt coated Au NP offer promising opportunity in cancer therapeutic and warrants advanced study in vivo models of cancer.
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Affiliation(s)
- Mohd Javed Akhtar
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Maqusood Ahamed
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia
| | - Hisham A Alhadlaq
- Department of Physics and Astronomy, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Sudhir Kumar
- Department of Zoology, University of Lucknow, Lucknow 226007, UP, India
| | - Salman A Alrokayan
- Department of Biochemistry, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
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Silva JPD, Lizarte Neto FS, Cirino MLDA, Carvalho CAMD, Carlotti CG, Colli BO, Tirapelli DPDC, Tirapelli LF. Analysis of Caspase-9 protein and microRNAs miR-21, miR-126 and miR-155 related to the apoptosis mechanism in the cerebellum of rats submitted to focal cerebral ischemia associated with an alcoholism model. ARQUIVOS DE NEURO-PSIQUIATRIA 2019; 77:689-695. [PMID: 31664344 DOI: 10.1590/0004-282x20190126] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 05/07/2019] [Indexed: 01/30/2023]
Abstract
OBJECTIVE This study aimed to analyze the cerebellum of rats submitted to an experimental focal cerebral ischemia, by middle cerebral artery occlusion for 90 minutes, followed by reperfusion for 48 hours, associated with an alcoholism model. METHODS Fifty adult Wistar rats were used, subdivided into five experimental groups: control group (C): animals submitted to anesthesia only; sham group (S): animals submitted to complete simulation of the surgical procedure; ischemic group (I): animals submitted to focal cerebral ischemia for 90 minutes followed by reperfusion for 48 hours; alcoholic group (A): animals that received daily absolute ethanol diluted 20% in water for four weeks; and, ischemic and alcoholic group (I + A): animals receiving the same treatment as group A and, after four weeks, submitted to focal cerebral ischemia for 90 minutes, followed by reperfusion for 48 hours. The cerebellum samples were collected and immunohistochemical analysis of Caspase-9 protein and serum analysis by RT-PCR of microRNAs miR-21, miR-126 and miR155 were performed. RESULTS The expression of Caspase-9 was higher in groups I, A and I + A. In the microRNAs analyses, miR-126 was higher in groups A and I + A, miR-155 was higher in groups I and I + A. CONCLUSIONS We conclude that apoptosis occurs in the cerebellar cortex, even if it is distant from the ischemic focus, and that microRNAs 126 and 155 show a correlation with cellular apoptosis in ischemic rats and those submitted to the chronic alcohol model.
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Affiliation(s)
- Jairo Pinheiro da Silva
- Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Departamento de Cirurgia e Anatomia, Ribeirão Preto SP, Brasil
| | - Fermino Sanches Lizarte Neto
- Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Departamento de Cirurgia e Anatomia, Ribeirão Preto SP, Brasil
| | - Mucio Luiz de Assis Cirino
- Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Departamento de Cirurgia e Anatomia, Ribeirão Preto SP, Brasil
| | | | - Carlos Gilberto Carlotti
- Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Departamento de Cirurgia e Anatomia, Ribeirão Preto SP, Brasil
| | - Benedicto Oscar Colli
- Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Departamento de Cirurgia e Anatomia, Ribeirão Preto SP, Brasil
| | | | - Luís Fernando Tirapelli
- Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Departamento de Cirurgia e Anatomia, Ribeirão Preto SP, Brasil
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Zhou W, Wang K, Wang J, Qu J, Du G, Zhang Y. SOX17 Inhibits Tumor Metastasis Via Wnt Signaling In Endometrial Cancer. Onco Targets Ther 2019; 12:8275-8286. [PMID: 31632077 PMCID: PMC6789416 DOI: 10.2147/ott.s220536] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Accepted: 09/24/2019] [Indexed: 01/05/2023] Open
Abstract
Background Endometrial cancer (EC) is the most common gynecological malignancy with high incidence of metastasis, while the mechanism of metastasis in EC is not clear. Methods Immunohistochemistry and real-time PCR assays were used to assess expression of SOX17 in paraffin-embedded tissues from EC patients and in EC cells. The migration of EC cells was assessed by wound-healing and Transwell assays as well as in an in vitro study of nude mice. In addition, the expression of specific proteins was analyzed by Western blot. Results We observed that SOX17 expression levels were relatively high in stage I EC specimens, and were significantly correlated with the epithelial cadherin (E-cadherin) and β-catenin expression. Additionally, stage II EC patients whose specimens had relatively high SOX17 expression levels had better outcomes. Wound-healing and Transwell assays and in vivo murine experiments revealed that SOX17 inhibited EC cell migration. Meanwhile, SOX17 increased expression of E-cadherin and decreased expression of β-catenin and proteins in the Wnt signaling pathway. Moreover, LiCl (β-catenin activator) enhanced the regulatory effects of SOX17 on the expression of E-cadherin, promigratory cadherin, vimentin, and proteins in the Wnt signaling pathway, while XAV93920 (β-catenin inhibitor) exerted the opposite effect. The SOX17 N-terminus was proved to be necessary for these effects. Mechanistic investigations suggested SOX17 inhibits EC cell migration by inactivating the Wnt/β-catenin–epithelial mesenchymal transition (EMT) axis in EC cells. Conclusion We uncovered a common SOX17–β-catenin–EMT mechanism underlying EC cell migration.
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Affiliation(s)
- Weiqiang Zhou
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Kai Wang
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Jingyun Wang
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Junjie Qu
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Guiqiang Du
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Yongli Zhang
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
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Lee J, Park SH, Lee J, Chun H, Choi MK, Yoon JH, Pham TH, Kim KH, Kwon T, Ryu HW, Oh SR, Yoon DY. Differential effects of luteolin and its glycosides on invasion and apoptosis in MDA-MB-231 triple-negative breast cancer cells. EXCLI JOURNAL 2019; 18:750-763. [PMID: 31611756 PMCID: PMC6785773 DOI: 10.17179/excli2019-1459] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 08/28/2019] [Indexed: 12/12/2022]
Abstract
Luteolin is known to have anticancer activity in various cancers. Recent studies have shown that luteolin glycosides, such as luteolin-8-C-β-fucopyranoside, 7-methoxy-luteolin-8-C-β-(6- deoxyxylopyranos-3-uloside) and luteolin-8-C-β-d-glucopyranoside, flavonoids that are present in Arthraxon hispidus, exert antimigratory and anti-invasive effects, but no cytotoxic effect in estrogen receptor-positive MCF7 breast cancer cells. In the present study, we further investigated and compared differential effects of luteolin and its glycosides in MDA-MB-231 triple-negative breast cancer cells. Luteolin suppressed the expression of matrix metalloproteinase-9 and inhibited migration and invasion in MDA-MB-231 cells treated with the tumor promotor 12-O-tetradecanoylphorbol-13-acetate at non-cytotoxic concentrations (0, 5, and 10 μM). Furthermore, at cytotoxic concentrations (20 and 40 μM), luteolin induced apoptosis via extrinsic and intrinsic pathways in MDA-MB-231 cells. However, luteolin glycosides did not exert any cytotoxic, antimigratory, or anti-invasive effect in MDA-MB-231 cells. In brief, luteolin had both antimetastatic and cytotoxic effects on MDA-MB-231 cells, whereas luteolin glycosides had no effect on this cell line. Taking together the present results and our previous findings on the differential effects of luteolin and its glycosides on MDA-MB-231 and MCF-7 breast cancer cells, luteolin and its glycosides can be suggested as a potential candidate for breast cancer therapy.
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Affiliation(s)
- Jiyon Lee
- Department of Bioscience and Biotechnology, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Su-Ho Park
- Department of Bioscience and Biotechnology, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Jintak Lee
- Department of Bioscience and Biotechnology, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Hyunwoo Chun
- Department of Bioscience and Biotechnology, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Myoung-Kwon Choi
- Department of Bioscience and Biotechnology, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Jae-Hwan Yoon
- Department of Bioscience and Biotechnology, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Thu-Huyen Pham
- Department of Bioscience and Biotechnology, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Ki Hong Kim
- Department of Bioscience and Biotechnology, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Taeho Kwon
- Department of Bioscience and Biotechnology, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Hyung-Won Ryu
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, 30 Yeongudanji-ro, Ohsong, Cheongju 28116, Republic of Korea
| | - Sei-Ryang Oh
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, 30 Yeongudanji-ro, Ohsong, Cheongju 28116, Republic of Korea
| | - Do-Young Yoon
- Department of Bioscience and Biotechnology, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
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Studies of the anticancer activities of ruthenium(II) polypyridyl complexes toward human hepatocellular carcinoma BEL-7402 cells. TRANSIT METAL CHEM 2019. [DOI: 10.1007/s11243-019-00315-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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66
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Ismail NI, Othman I, Abas F, H Lajis N, Naidu R. Mechanism of Apoptosis Induced by Curcumin in Colorectal Cancer. Int J Mol Sci 2019; 20:E2454. [PMID: 31108984 PMCID: PMC6566943 DOI: 10.3390/ijms20102454] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 04/20/2019] [Accepted: 04/26/2019] [Indexed: 02/07/2023] Open
Abstract
Colorectal cancer (CRC) is among the top three cancer with higher incident and mortality rate worldwide. It is estimated that about over than 1.1 million of death and 2.2 million new cases by the year 2030. The current treatment modalities with the usage of chemo drugs such as FOLFOX and FOLFIRI, surgery and radiotherapy, which are usually accompanied with major side effects, are rarely cured along with poor survival rate and at higher recurrence outcome. This trigger the needs of exploring new natural compounds with anti-cancer properties which possess fewer side effects. Curcumin, a common spice used in ancient medicine was found to induce apoptosis by targeting various molecules and signaling pathways involved in CRC. Disruption of the homeostatic balance between cell proliferation and apoptosis could be one of the promoting factors in colorectal cancer progression. In this review, we describe the current knowledge of apoptosis regulation by curcumin in CRC with regard to molecular targets and associated signaling pathways.
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Affiliation(s)
- Nor Isnida Ismail
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, 47500 Bandar Sunway Darul Ehsan, Malaysia.
- UniKL MESTECH, A1-1 Jalan TKS1, Taman Kajang Sentral, 43000 Kajang, Malaysia.
| | - Iekhsan Othman
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, 47500 Bandar Sunway Darul Ehsan, Malaysia.
| | - Faridah Abas
- Laboratory of Natural Products, Faculty of Science, University Putra Malaysia, UPM, 43400 Serdang, Malaysia.
- Department of Food Science, Faculty of Food Science and Technology, University Putra Malaysia, UPM, 434000 Serdang, Malaysia.
| | - Nordin H Lajis
- Laboratory of Natural Products, Faculty of Science, University Putra Malaysia, UPM, 43400 Serdang, Malaysia.
| | - Rakesh Naidu
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, 47500 Bandar Sunway Darul Ehsan, Malaysia.
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67
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Dojo Soeandy C, Salmasi F, Latif M, Elia AJ, Suo NJ, Henderson JT. Endothelin-1-mediated cerebral ischemia in mice: early cellular events and the role of caspase-3. Apoptosis 2019; 24:578-595. [DOI: 10.1007/s10495-019-01541-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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68
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Choi EO, Hwang HJ, Choi YH. Induction of Apoptosis Scutellaria baicalensis Georgi Root Extract by Inactivation of the Phosphatidyl Inositol 3-kinase/Akt Signaling Pathway in Human Leukemia U937 Cells. J Cancer Prev 2019; 24:11-19. [PMID: 30993090 PMCID: PMC6453591 DOI: 10.15430/jcp.2019.24.1.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 03/18/2019] [Accepted: 03/18/2019] [Indexed: 11/03/2022] Open
Abstract
Background The roots of Scutellaria baicalensis Georgi (Labiatae) have been widely used in traditional medicine for treatment of various diseases. In this study, we investigated the effects of ethanol extracts of S. baicalensis roots (EESB) on the growth ofn human leukemia U937 cells. Methods The effect of EESB on cell viability was measured by the 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide assay. Apoptosis was determined using 4,6-diamidino-2-phenyllindile staining and flow cytometry. The effects of EESB on the expression of regulatory proteins of apoptosis and phosphatidyl inositol 3-kinase (PI3K)/Akt signaling were determined by Western blotting. Caspase activity and mitochondrial membrane potential (MMP) were measured using flow cytometric analysis. Results EESB significantly inhibited the growth of U937 cells and induced apoptosis, which was associated with down-regulation of anti-apoptotic Bcl-2, up-regulation of pro-apoptotic Bax, the loss of MMP and activation of caspase-9 and -3. We also found that EESB enhanced the expression of death receptors (DRs) and their associated ligands and induced the activation of caspase-8 and truncation of Bid. In addition, EESB suppressed PI3K/Akt signaling and EESB-induced apoptosis and growth inhibition were further increased by inhibition of PI3K activity. Conclusions Our results indicated that the pro-apoptotic effect of EESB was mediated through the activation of DR-mediated intrinsic and mitochondria-mediated extrinsic apoptosis pathways and inhibition of the PI3K/Akt signaling in U937 cells.
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Affiliation(s)
- Eun Ok Choi
- Department of Biochemistry, Dong-Eui University College of Korean Medicine, Busan, Korea.,Anti-Aging Research Center, Dong-Eui University, Busan, Korea
| | - Hye-Jin Hwang
- Anti-Aging Research Center, Dong-Eui University, Busan, Korea.,Department of Food and Nutrition, College of Nursing, Healthcare Sciences & Human Ecology, Dong-Eui University, Busan, Korea
| | - Yung Hyun Choi
- Department of Biochemistry, Dong-Eui University College of Korean Medicine, Busan, Korea.,Anti-Aging Research Center, Dong-Eui University, Busan, Korea
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69
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Zhou X, Gan F, Hou L, Liu Z, Su J, Lin Z, Le G, Huang K. Aflatoxin B 1 Induces Immunotoxicity through the DNA Methyltransferase-Mediated JAK2/STAT3 Pathway in 3D4/21 Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:3772-3780. [PMID: 30848898 DOI: 10.1021/acs.jafc.8b07309] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
As the most toxic mycotoxin of all of the fungal toxins, aflatoxin B1 (AFB1) has carcinogenesis, heptotoxicity, and immunotoxicity. DNA methylation plays a critical role in gene expression regulation of the pathological process. However, the relationship between DNA methylation and AFB1-induced immunotoxicity was not yet reported. Therefore, the objectives of this study were to verify AFB1-induced immunotoxicity and investigate the potential role of the DNA methyltransferase (DNMT) family in AFB1-induced immunotoxicity and the pathway mechanism in 3D4/21 cells. The results showed that AFB1 could induce cytotoxicity, apoptosis, pro-inflammatory cytokine expression, DNA damage, and oxidative stress and decrease phagocytotic capacity. Meanwhile, the levels of DNMT1 and DNMT3a were significantly increased in 0.04 and 0.08 μg/mL AFB1 compared to the control. Inhibition of DNMT1 and DNMT3a by 5-Aza-2dc could reverse changes of the above parameters. Further, the JAK2/STAT3 pathway was significantly activated in 0.04 μg/mL AFB1. Inhibition of p-JAK2 and p-STAT3 by AG490 could alleviate AFB1-induced immunotoxicity. Moreover, inhibition of DNMT1 and DNMT3a by 5-Aza-2dc could suppress the phosphorylation of JAK2 and STAT3. Taken together, AFB1-induced immunotoxicity is related to the JAK2/STAT3 pathway mediated by DNMTs in 3D4/21 cells.
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70
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Inhibition of TNF-α-induced neuronal apoptosis by antidepressants acting through the lysophosphatidic acid receptor LPA1. Apoptosis 2019; 24:478-498. [DOI: 10.1007/s10495-019-01530-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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71
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Meng T, Qin QP, Chen ZL, Zou HH, Wang K, Liang FP. High in vitro and in vivo antitumor activities of Ln(III) complexes with mixed 5,7-dichloro-2-methyl-8-quinolinol and 4,4'-dimethyl-2,2'-bipyridyl chelating ligands. Eur J Med Chem 2019; 169:103-110. [PMID: 30870791 DOI: 10.1016/j.ejmech.2019.02.066] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/23/2019] [Accepted: 02/23/2019] [Indexed: 01/09/2023]
Abstract
Three novel Ln(III) complexes, namely, [Pm(dmbpy)(ClQ)2NO3] (1), [Yb(dmbpy)(ClQ)2NO3] (2), and [Lu(dmbpy)(ClQ)2NO3] (3), with mixed 5,7-dichloro-2-methyl-8-quinolinol (H-ClQ) and 4,4'-dimethyl-2,2'-bipyridyl (dmbpy) chelating ligands were first synthesized. The cytotoxic activity of Ln(III) complexes 1-3, H-ClQ, and dmbpy against a panel of human normal and cancer cell lines, namely, human non-small cell lung cancer cells (NCI-H460), human cervical adenocarcinoma cancer cells, human ovarian cancer cells, and human normal hepatocyte cells, were evaluated by using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) method. The three novel Ln(III) complexes showed a high in vitro antitumor activity toward the NCI-H460 with IC50 of 1.00 ± 0.25 nM for 1, 5.13 ± 0.44 μM for 2, and 11.87 ± 0.79 μM for 3, respectively. In addition, Ln(III) complexes 1 and 2 exerted their in vitro antitumor activity/mechanism mainly via the mitochondrial death pathway and caused a G2/M phase arrest in the following order: 1 > 2. An NCI-H460 tumor xenograft mouse model was used to evaluate the Pm(III) complex 1in vivo antitumor activity. Pm(III) complex 1 showed a high in vivo antitumor activity, and the tumor growth inhibition rate (IR) was 56.0% (p < 0.05). In summary, our study on Pm(III) complex 1 revealed promising results in in vitro and in vivo antitumor activity assays.
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Affiliation(s)
- Ting Meng
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin, 541004, PR China
| | - Qi-Pin Qin
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin, 541004, PR China; Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin, 537000, PR China.
| | - Zi-Lu Chen
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin, 541004, PR China
| | - Hua-Hong Zou
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin, 541004, PR China.
| | - Kai Wang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin, 541004, PR China; Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, PR China
| | - Fu-Pei Liang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin, 541004, PR China; Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, PR China.
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Li J, Jiang M, Zhou H, Jin P, Cheung KMC, Chu PK, Yeung KWK. Vanadium Dioxide Nanocoating Induces Tumor Cell Death through Mitochondrial Electron Transport Chain Interruption. GLOBAL CHALLENGES (HOBOKEN, NJ) 2019; 3:1800058. [PMID: 31565366 PMCID: PMC6436600 DOI: 10.1002/gch2.201800058] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 11/17/2018] [Indexed: 05/02/2023]
Abstract
A biomaterials surface enabling the induction of tumor cell death is particularly desirable for implantable biomedical devices that directly contact tumor tissues. However, this specific antitumor feature is rarely found. Consequently, an antitumor-cell nanocoating comprised of vanadium dioxide (VO2) prepared by customized reactive magnetron sputtering has been proposed, and its antitumor-growth capability has been demonstrated using human cholangiocarcinoma cells. The results reveal that the VO2 nanocoating is able to interrupt the mitochondrial electron transport chain and then elevate the intracellular reactive oxygen species levels, leading to the collapse of the mitochondrial membrane potential and the destruction of cell redox homeostasis. Indeed, this chain reaction can effectively trigger oxidative damage in the cholangiocarcinoma cells. Additionally, this study has provided new insights into designing a tumor-cell-inhibited biomaterial surface, which is modulated by the mechanism of mitochondria-targeting tumor cell death.
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Affiliation(s)
- Jinhua Li
- Department of Orthopaedics and TraumatologyLi Ka Shing Faculty of MedicineThe University of Hong KongPokfulamHong Kong999077China
- Department of Physics and Department of Materials Science and EngineeringCity University of Hong KongTat Chee AvenueKowloonHong Kong999077China
- Centre for Translational BoneJoint and Soft Tissue ResearchUniversity Hospital Carl Gustav Carus and Faculty of MedicineTechnische Universität DresdenDresden01307Germany
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic TraumaDepartment of Orthopaedics and TraumatologyThe University of Hong Kong‐Shenzhen HospitalShenzhen518053China
| | - Meng Jiang
- College of Medical ImagingShanghai University of Medicine and Health SciencesShanghai201318China
| | - Huaijuan Zhou
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institute of CeramicsChinese Academy of SciencesShanghai200050China
| | - Ping Jin
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institute of CeramicsChinese Academy of SciencesShanghai200050China
| | - Kenneth M. C. Cheung
- Department of Orthopaedics and TraumatologyLi Ka Shing Faculty of MedicineThe University of Hong KongPokfulamHong Kong999077China
| | - Paul K. Chu
- Department of Physics and Department of Materials Science and EngineeringCity University of Hong KongTat Chee AvenueKowloonHong Kong999077China
| | - Kelvin W. K. Yeung
- Department of Orthopaedics and TraumatologyLi Ka Shing Faculty of MedicineThe University of Hong KongPokfulamHong Kong999077China
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic TraumaDepartment of Orthopaedics and TraumatologyThe University of Hong Kong‐Shenzhen HospitalShenzhen518053China
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Xu J, Zang Y, Liu D, Yang T, Wang J, Wang Y, Liu X, Chen D. DRAM is Involved in Hypoxia/Ischemia-Induced Autophagic Apoptosis in Hepatocytes. Aging Dis 2019; 10:82-93. [PMID: 30705770 PMCID: PMC6345327 DOI: 10.14336/ad.2018.0210] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Accepted: 02/10/2018] [Indexed: 12/14/2022] Open
Abstract
Liver hypoxia/ischemia injury leads to acute liver injury, delayed graft dysfunction, and failure during liver transplantation. Previous studies showed that autophagy is involved in liver hypoxia/ischemia injury. Our and others’ studies have found that the damage-regulated autophagy modulator (DRAM) could induce the autophagic apoptosis. However, the role of DRAM regulating autophagy in liver hypoxia/ischemia injury remains unclear. The aim of this study was to determine whether DRAM is involved in oxygen-glucose deprivation (OGD)-induced hepatocyte autophagic apoptosis. Normal hepatocytes (HL-7702) were treated with OGD while Balb/c mice underwent surgery to induce 70% liver ischemia. To evaluate the role of DRAM in hypoxia/ischemia-induced hepatic injury, DRAM siRNA was used to knockdown DRAM expression in cultured hepatocytes and a recombinant adenovirus vector expressing DRAM was used to overexpress DRAM in cultured hepatocytes in vitro and in the liver in vivo. Hepatic injury was analyzed by histopathological methods and measurement of hepatocyte enzyme release. Cell apoptosis was analyzed by flow cytometry and TUNEL staining. Several autophagic biomarkers were observed by western blot analysis. OGD and 70% hepatic ischemia significantly induced cell autophagy, apoptosis and DRAM expression in hepatocytes in vitro and in vivo. OGD-induced autophagic apoptosis was inhibited by 3-Methyladenine (3-MA). OGD-induced injury and autophagy in HL-7702 cells were significantly attenuated by DRAM knockdown but aggravated by DRAM overexpression in vitro. Similarly, DRAM overexpression increased ischemia-induced liver injury and hepatic apoptosis in vivo. Our data demonstrate that hypoxia/ischemia induces hepatic injury through a DRAM-dependent autophagic apoptosis pathway. These data also suggest that DRAM plays an important role in ischemia-induced liver injury and hepatocyte apoptosis.
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Affiliation(s)
- Jianji Xu
- 1Beijing You'an Hospital Affiliated with Capital Medical University, Beijing 100069, China.,2Beijing Institute of Hepatology, Capital Medical University, Beijing 100069, China.,4The Beijing Precision Medicine and Transformation Engineering Technology Research Center of Hepatitis and Liver Cancer, Beijing 100069, China
| | - Yunjin Zang
- 1Beijing You'an Hospital Affiliated with Capital Medical University, Beijing 100069, China.,3Organ Transplantation Center, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Dongjie Liu
- 1Beijing You'an Hospital Affiliated with Capital Medical University, Beijing 100069, China.,2Beijing Institute of Hepatology, Capital Medical University, Beijing 100069, China.,4The Beijing Precision Medicine and Transformation Engineering Technology Research Center of Hepatitis and Liver Cancer, Beijing 100069, China
| | - Tongwang Yang
- 1Beijing You'an Hospital Affiliated with Capital Medical University, Beijing 100069, China.,2Beijing Institute of Hepatology, Capital Medical University, Beijing 100069, China.,4The Beijing Precision Medicine and Transformation Engineering Technology Research Center of Hepatitis and Liver Cancer, Beijing 100069, China
| | - Jieling Wang
- 1Beijing You'an Hospital Affiliated with Capital Medical University, Beijing 100069, China.,2Beijing Institute of Hepatology, Capital Medical University, Beijing 100069, China.,4The Beijing Precision Medicine and Transformation Engineering Technology Research Center of Hepatitis and Liver Cancer, Beijing 100069, China
| | - Yanjun Wang
- 1Beijing You'an Hospital Affiliated with Capital Medical University, Beijing 100069, China.,2Beijing Institute of Hepatology, Capital Medical University, Beijing 100069, China.,4The Beijing Precision Medicine and Transformation Engineering Technology Research Center of Hepatitis and Liver Cancer, Beijing 100069, China
| | - Xiaoni Liu
- 1Beijing You'an Hospital Affiliated with Capital Medical University, Beijing 100069, China.,2Beijing Institute of Hepatology, Capital Medical University, Beijing 100069, China.,4The Beijing Precision Medicine and Transformation Engineering Technology Research Center of Hepatitis and Liver Cancer, Beijing 100069, China
| | - Dexi Chen
- 1Beijing You'an Hospital Affiliated with Capital Medical University, Beijing 100069, China.,2Beijing Institute of Hepatology, Capital Medical University, Beijing 100069, China.,4The Beijing Precision Medicine and Transformation Engineering Technology Research Center of Hepatitis and Liver Cancer, Beijing 100069, China
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Ozkan T, Hekmatshoar Y, Ertan-Bolelli T, Hidayat AN, Beksac M, Aki-Yalcin E, Yalcin I, Sunguroglu A. Determination of the Apoptotic Effect and Molecular Docking of Benzamide Derivative XT5 in K562 Cells. Anticancer Agents Med Chem 2019; 18:1521-1530. [DOI: 10.2174/1871520618666171229222534] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/12/2017] [Accepted: 12/06/2017] [Indexed: 11/22/2022]
Abstract
Background:
The tyrosine kinase inhibitor, imatinib, used as a first line treatment in Chronic Myeloid
Leukemia (CML) patients, may lead to resistance and failure to therapy. Novel combinations of imatinib
with other drugs is a strategy to improve treatment efficiency.
Objective:
In this study, the antileukemic and apoptotic effects of a benzamide derivative XT5 and benzoxazole
derivative XT2B and their combination with imatinib were investigated in imatinib-sensitive (K562S) and
imatinib-resistant (K562R) CML cells.
Methods:
In vitro cytotoxicity was determined by MTT assay. Then, apoptotic effect of XT5 on CML cell lines
was tested by Annexin V flow cytometry, caspase activation and RT-PCR. Docking calculation was performed
using AutoDock Vina in PyMOL environment using AutoDock/Vina plugin for PyMOL.
Results:
According to our MTT assay data, XT5 indicated significant antiproliferative effect on cell lines, therefore
we investigated apoptotic effects of XT5. Treatment of K562 cell lines with a combination of XT5 and
imatinib-XT5 increased cytotoxicity, the Annexin V binding and caspase 3/7 activation. In addition to apoptosis
assays, we observed an increase in the expression levels of the pro-apoptotic (BAX, BAD and BIM) genes in
XT5 treated K562R and K562S cells. Molecular modelling experiments showed that XT5 showed hydrogenbonding
interactions with important amino acids of BCR-ABL kinase receptor; however XT2B did not show
any hydrogen bond interaction.
Conclusion:
Our results indicate that XT5 could be a potential candidate to be used as a new anticancer drug
and XT5 combination with imatinib as an alternate treatment strategy for overcoming imatinib resistance.
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Affiliation(s)
- Tulin Ozkan
- Department of Medical Biology, School of Medicine, Ankara University, Ankara, Turkey
| | - Yalda Hekmatshoar
- Department of Medical Biology, School of Medicine, Ankara University, Ankara, Turkey
| | - Tugba Ertan-Bolelli
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | | | - Meral Beksac
- Department of Hematology and Cord Blood Bank, Ankara University, Ankara, Turkey
| | - Esin Aki-Yalcin
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | - Ismail Yalcin
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | - Asuman Sunguroglu
- Department of Medical Biology, School of Medicine, Ankara University, Ankara, Turkey
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75
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Yaoita Y. Tail Resorption During Metamorphosis in Xenopus Tadpoles. Front Endocrinol (Lausanne) 2019; 10:143. [PMID: 30923513 PMCID: PMC6426756 DOI: 10.3389/fendo.2019.00143] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 02/18/2019] [Indexed: 01/09/2023] Open
Abstract
Tail resorption in anuran tadpoles is one of the most physically and physiologically notable phenomena in developmental biology. A tail that is over twice as long as the tadpole trunk is absorbed within several days, while concurrently the tadpole's locomotive function is continuously managed during the transition of the driving force from the tail to hindlimbs. Elaborate regulation is necessary to accomplish this locomotive switch. Tadpole's hindlimbs must develop from the limb-bud size to the mature size and the nervous system must be arranged to control movement before the tail is degenerated. The order of the development and growth of hindlimbs and the regression of the tail are regulated by the increasing levels of thyroid hormones (THs), the intracellular metabolism of THs, the expression levels of TH receptors, the expression of several effector genes, and other factors that can modulate TH signaling. The tail degeneration that is induced by the TH surge occurs through two mechanisms, direct TH-responsive cell death (suicide) and cell death caused by the degradation of the extracellular matrix and a loss of cellular anchorage (murder). These pathways lead to the collapse of the notochord, the contraction of surviving slow muscles, and, ultimately, the loss of the tail. In this review, I focus on the differential TH sensitivity of the tail and hindlimbs and the mechanism of tail resorption during Xenopus metamorphosis.
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76
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Geng YD, Zhang L, Wang GY, Feng XJ, Chen ZL, Jiang L, Shen AZ. Xanthatin mediates G2/M cell cycle arrest, autophagy and apoptosis via ROS/XIAP signaling in human colon cancer cells. Nat Prod Res 2018; 34:2616-2620. [PMID: 30587055 DOI: 10.1080/14786419.2018.1544976] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Ya-di Geng
- Department of Pharmacy, Anhui Provincial Hospital, Anhui Medical University, Hefei, Anhui, China
| | - Lei Zhang
- Department of Pharmacy, Anhui Provincial Hospital, Anhui Medical University, Hefei, Anhui, China
| | - Guo-Yu Wang
- Department of Pharmacy, Anhui Provincial Hospital, Anhui Medical University, Hefei, Anhui, China
| | - Xiao-Jun Feng
- Department of Pharmacy, Anhui Provincial Hospital, Anhui Medical University, Hefei, Anhui, China
| | - Zhao-Lin Chen
- Department of Pharmacy, Anhui Provincial Hospital, Anhui Medical University, Hefei, Anhui, China
| | - Ling Jiang
- Department of Pharmacy, Anhui Provincial Hospital, Anhui Medical University, Hefei, Anhui, China
| | - Ai-Zong Shen
- Department of Pharmacy, Anhui Provincial Hospital, Anhui Medical University, Hefei, Anhui, China
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Zhuo FF, Zhang C, Zhang H, Xia Y, Xue GM, Yang L, Kong LY. Chrysanthemulide A induces apoptosis through DR5 upregulation via JNK-mediated autophagosome accumulation in human osteosarcoma cells. J Cell Physiol 2018; 234:13191-13208. [PMID: 30556589 DOI: 10.1002/jcp.27991] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 11/21/2018] [Indexed: 12/18/2022]
Abstract
Osteosarcoma is the most frequent malignant primary bone tumor, and it generally develops a multidrug resistance. Chrysanthemulide A (CA) is a sesquiterpenoid from the herb Chrysanthemum indicum that has demonstrated a great anti-osteosarcoma potential. In this study, CA-induced apoptotic cell death resulted in the activation of the caspase-8-mediated caspase cascade, as evidenced by the cleavage of the substrate protein Bid and the caspase-8 inhibitor Z-VAD-FMK. The CA treatment upregulated the expression of death receptor 5 (DR5) in both whole cells and the cell membrane. Blocking DR5 expression by the small interfering RNA (siRNA) treatment decreased the caspase-8-mediated caspase cascade and efficiently attenuated CA-induced apoptosis, suggesting the critical role of DR5 in CA-induced apoptotic cell death. CA-induced upregulation of the DR5 protein was accompanied by the accumulation of LC3B-II, indicating the formation of autophagosomes. Importantly, DR5 upregulation was mediated by transcriptionally controlled autophagosome accumulation, as blockade of autophagosomes by LC3B or ATG-5 siRNA substantially decreased DR5 upregulation. Furthermore, CA activated the c-Jun N-terminal kinase (JNK) signaling pathway, and treatment with JNK siRNAs or inhibitor SP600125 significantly attenuated CA-mediated autophagosome accumulation and DR5-mediated cell apoptosis. Finally, CA sensitized the osteosarcoma cells to the DR5 ligand tumor necrosis factor-related apoptosis-inducing ligand (TRAIL)-induced apoptotic cell death. Above all, these results suggest that CA induces apoptosis through upregulating DR5 via JNK-mediated autophagosome accumulation and that combined treatment with CA and TRAIL might be a promising therapy for osteosarcoma.
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Affiliation(s)
- Fang-Fang Zhuo
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
| | - Chao Zhang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
| | - Hao Zhang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
| | - Yuanzheng Xia
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
| | - Gui-Min Xue
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
| | - Lei Yang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
| | - Ling-Yi Kong
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
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Li D, Li X, Li G, Meng Y, Jin Y, Shang S, Li Y. Alpinumisoflavone causes DNA damage in Colorectal Cancer Cells via blocking DNA repair mediated by RAD51. Life Sci 2018; 216:259-270. [PMID: 30448264 DOI: 10.1016/j.lfs.2018.11.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 11/07/2018] [Accepted: 11/15/2018] [Indexed: 01/12/2023]
Abstract
AIMS Colorectal Cancer (CRC) accounts for 6.1% incidence and 9.2% mortality worldwide. The current study aimed to investigate the effect of alpinumisoflavone (AIF) on CRC and its possible molecular mechanism. METHODS HCT-116 and SW480 cells were chosen as cell model to study the anti-cancer activity of AIF in vitro experiments. Cells proliferative capacity and clonogenicity were examined by CCK-8 assay and colony formation assay, while cell apoptosis was detected by Hoechst 33258 staining and Flow cytometer. The protein expression levels of related gene were examined by western blotting. Transcriptome analyses were conducted to identify the differentially expressed genes in CRC cells, following AIF treatment. DNA damage was examined by γH2AX foci assay. The anti-cancer effect of AIF in vivo was validated in CRC xenograft model. KEY FINDINGS We found that AIF inhibited CRC cell proliferation and promoted apoptosis in a dose-dependent manner, as well as increased the number of γ-H2AX foci. In addition, microarray analysis showed that the DNA-double strand break (DSB) repair gene RAD51 was aberrantly overexpressed in CRC tissues, and was positively correlated with lymph node metastasis, TNM stage and poor outcomes. Both in vitro and in vivo experiments confirm that AIF treatment significantly decreased RAD51 levels. Knockdown RAD51 could enhance the anti-cancer activity of AIF against CRC, while abrogated by RAD51 overexpression. SIGNIFICANCE These findings suggest that AIF can be regarded as a potential anti-cancer drug and provide new insights into CRC treatment.
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Affiliation(s)
- Dong Li
- Department of Pharmacy, Puyang Oilfield General Hospital, Henan, China.
| | - Xiaoyan Li
- Department of Pharmacy, Puyang Oilfield General Hospital, Henan, China
| | - Genqu Li
- Department of Pharmacy, Puyang Oilfield General Hospital, Henan, China
| | - Yan Meng
- Department of Pharmacy, Puyang Oilfield General Hospital, Henan, China
| | - Yanghong Jin
- Department of Pharmacy, Puyang Oilfield General Hospital, Henan, China
| | - Shuang Shang
- Department of Pharmacy, Puyang Oilfield General Hospital, Henan, China
| | - Yanjie Li
- Department of Pharmacy, Puyang Oilfield General Hospital, Henan, China
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79
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Oyebode OT, Akinyelu JO, Oamen EA, Olorunsogo OO. Methanol fraction of Calliandra portoricensis root bark activates caspases via alteration in mitochondrial viability in vivo. JOURNAL OF HERBMED PHARMACOLOGY 2018. [DOI: 10.15171/jhp.2018.38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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80
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Ji J, Zhou BR, Zhang RH, Li HM, Guo Q, Zhu J, Luo D. MG-132 treatment promotes TRAIL-mediated apoptosis in SEB-1 sebocytes. Life Sci 2018; 210:150-157. [PMID: 30176247 DOI: 10.1016/j.lfs.2018.08.068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 08/22/2018] [Accepted: 08/30/2018] [Indexed: 11/19/2022]
Abstract
AIMS This study aimed to identify the mechanism of how MG-132 stimulates cell death in SEB-1 sebocytes. MATERIALS AND METHODS TUNEL staining and annexin-FITC/PI flow cytometry were utilized to examine the apoptotic cell number of SEB-1 sebocytes and HaCaT keratinocytes upon MG-132 and tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) treatment. MTT assay and CCK-8 assay monitored the proliferative rate and viability of both cell lines with different treatment. Western blotting (WB) and qPCR were performed to detect the expression of TRAIL and members of Bcl-2 family at protein and gene level. Additionally, RNA interfering was used to knockdown the mRNA transcription of TRAIL and BIK gene. KEY FINDINGS MG-132 treatment enhanced cell death in SEB-1 sebocytes but not in HaCaT keratinocytes. Meanwhile, TRAIL concentrations in SEB-1 sebocytes treated with MG-132 were markedly elevated. Furthermore, treatment with TRAIL or the TRAIL receptor-specific monoclonal antibody AY4 at various doses stimulated cell death in SEB-1 sebocytes in a time- and dose-dependent manner. Silencing of TRAIL restored the cell viability of SEB-1 cells to a normal level after MG-132 treatment. Combined treatment of SEB-1 sebocytes with TRAIL and MG-132 synergistically triggered cell death, suppressed cell proliferation and survival, and promoted BIK expression. Furthermore, BCL2 Interacting Killer (BIK) knockdown via RNA interference participated in the recovery of cell survival reduced by treatment with TRAIL and MG-132. SIGNIFICANCE These findings suggest that treatment with the selective proteasome suppressor MG-132 and TRAIL induces cell death in sebocytes through upregulation of BIK, a member of the Bcl-2 family.
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Affiliation(s)
- Jin Ji
- Department of Dermatology, the First Affiliated Hospital of Nanjing Medical University
| | - Bing-Rong Zhou
- Department of Dermatology, the First Affiliated Hospital of Nanjing Medical University
| | - Ruo-Hua Zhang
- Department of Dermatology, The Affiliated Hospital of Nanjing University of Chinese Medicine
| | - Hong-Min Li
- Department of Dermatology, The Affiliated Hospital of Nanjing University of Chinese Medicine
| | - Qin Guo
- Department of Dermatology, The Affiliated Hospital of Nanjing University of Chinese Medicine
| | - Jie Zhu
- Department of Dermatology, The Affiliated Hospital of Nanjing University of Chinese Medicine
| | - Dan Luo
- Department of Dermatology, the First Affiliated Hospital of Nanjing Medical University.
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81
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Fu S, Fu Y, Chen F, Hu Y, Quan B, Zhang J. Overexpression of MYCT1 Inhibits Proliferation and Induces Apoptosis in Human Acute Myeloid Leukemia HL-60 and KG-1a Cells in vitro and in vivo. Front Pharmacol 2018; 9:1045. [PMID: 30283340 PMCID: PMC6157318 DOI: 10.3389/fphar.2018.01045] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 08/27/2018] [Indexed: 12/11/2022] Open
Abstract
MYC target 1 (MYCT1), a direct target gene of c-Myc, is a novel candidate tumor suppressor gene first cloned from laryngeal squamous cell carcinoma. The downregulation of MYCT1 has been reported to be associated with carcinogenesis. However, the role of MYCT1 in the development and progress of acute myeloid leukemia (AML) remains unknown and requires further investigation. In this study, we first found that the expression level of MYCT1 was significantly lower in the bone marrow (BM) derived from AML patients than that from healthy individuals. The low expression of MYCT1 in AML BM may be due to the hypermethylation in its promoter. MYCT1 expression was strongly associated with French-American-British classifications of AML. The low expression level of MYCT1 was more often observed in patients of M1, M5 and M6 types. In vitro, lentiviral particles carrying the complete CDS of MYCT1 gene were used to mediate the forced overexpression of MYCT1 in two AML cell lines, HL-60 and KG-1a. MYCT1 overexpression significantly inhibited cell proliferation, arrested cell cycle at G0/G1 phase, and downregulated the expression of cyclins D and E. Moreover, MYCT1 overexpression triggered apoptosis in AML cells, which was accompanied by enhanced cleavage of caspase-3 and -9, upregulated expression of B-cell lymphoma 2 (Bcl-2)-associated X protein (Bax), and downregulated Bcl-2. Finally, in BALB/c nude mice bearing xenograft tumors generated by HL-60 and KG-1a cells, we noted that the intratumoral injection of MYCT1 lentivirus repressed tumor growth and led to massive apoptosis. In summary, our results reveal that MYCT1's promoter is hypermethylated and its expression is downregulated in the BM of AML patients. MYCT1 plays a tumor-suppressive role, and it may serve as a promising target for the genetic therapeutic strategy in treating AML.
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Affiliation(s)
- Shuang Fu
- Hematology Laboratory, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yu Fu
- Hematology Laboratory, Shengjing Hospital of China Medical University, Shenyang, China
| | - Fang Chen
- Hematology Laboratory, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yanping Hu
- Hematology Laboratory, Shengjing Hospital of China Medical University, Shenyang, China
| | - Bi Quan
- Hematology Laboratory, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jihong Zhang
- Hematology Laboratory, Shengjing Hospital of China Medical University, Shenyang, China
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82
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Inhibitory effect of vanillin on RANKL-induced osteoclast formation and function through activating mitochondrial-dependent apoptosis signaling pathway. Life Sci 2018; 208:305-314. [DOI: 10.1016/j.lfs.2018.07.048] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 07/07/2018] [Accepted: 07/24/2018] [Indexed: 01/10/2023]
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83
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Zou Y, Lei W, Su S, Bu J, Zhu S, Huang Q, Li Z. Chlamydia trachomatis plasmid-encoded protein Pgp3 inhibits apoptosis via the PI3K-AKT-mediated MDM2-p53 axis. Mol Cell Biochem 2018; 452:167-176. [PMID: 30132214 DOI: 10.1007/s11010-018-3422-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 07/26/2017] [Indexed: 11/24/2022]
Abstract
Chlamydia trachomatis, the most common human pathogen that causes trachoma and sexually transmitted disease, has developed various strategies for inhibiting host cell apoptosis. Activation of the PI3K (phosphoinositide 3-kinase)/AKT-mediated MDM2 (murine double minute 2)-p53 pathway plays a prominent role in the apoptosis resistance arising from C. trachomatis infection. However, the precise upstream mechanisms by which C. trachomatis activates this pathway have not been adequately investigated. Here, we reveal that the secreted C. trachomatis plasmid-encoded protein Pgp3 inhibits apoptosis in HeLa cells. This process requires the activation of the PI3K/AKT signaling pathway, thereby leading to phosphorylation and nuclear entry of MDM2, and p53 degradation. PI3 K inhibitor LY294002 and MDM2 inhibitor Nutlin-3a block Pgp3-induced inhibition of HeLa cell apoptosis, suggesting a critical role for the PI3K/AKT pathway and its effect on the MDM2-p53 axis in Pgp3 anti-apoptotic activity.
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Affiliation(s)
- Yan Zou
- Institute of Pathogenic Biology, Medical College, Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, 421001, Hunan, People's Republic of China.,Clinical Laboratory, Maternity and Child Health Care Hospital in Xiangtan, Xiangtan, 411100, Hunan, People's Republic of China
| | - Wenbo Lei
- Institute of Pathogenic Biology, Medical College, Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, 421001, Hunan, People's Republic of China
| | - Shengmei Su
- Institute of Pathogenic Biology, Medical College, Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, 421001, Hunan, People's Republic of China
| | - Jichang Bu
- Institute of Pathogenic Biology, Medical College, Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, 421001, Hunan, People's Republic of China
| | - Shunxin Zhu
- Clinical Laboratory, Maternity and Child Health Care Hospital in Xiangtan, Xiangtan, 411100, Hunan, People's Republic of China
| | - Qiulin Huang
- Department of General Surgery, The First Affiliated Hospital of University of South China, Hengyang, 421001, Hunan, People's Republic of China.
| | - Zhongyu Li
- Institute of Pathogenic Biology, Medical College, Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, 421001, Hunan, People's Republic of China.
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84
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Gurunathan S, Kang MH, Kim JH. Combination Effect of Silver Nanoparticles and Histone Deacetylases Inhibitor in Human Alveolar Basal Epithelial Cells. Molecules 2018; 23:molecules23082046. [PMID: 30111752 PMCID: PMC6222610 DOI: 10.3390/molecules23082046] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 08/09/2018] [Accepted: 08/10/2018] [Indexed: 01/15/2023] Open
Abstract
Although many treatment strategies have been reported for lung disease, the mechanism of combination therapy using silver nanoparticles (AgNPs) and histone deacetylases inhibitors (HDACi) remains unclear. Therefore, innovative treatment strategies are essential for addressing the therapeutic challenges of this highly aggressive lung cancer. AgNPs and HDACi seem to be the best candidates for anticancer therapy because of their anti-proliferative effect in a variety of cancer cells. First, we synthesized AgNPs using wogonin as a reducing and stabilizing agent, following which the synthesized AgNPs were characterized by various analytical techniques. The synthesized AgNPs exhibited dose- and size-dependent toxicity towards A549 cells. Interestingly, the combination of AgNPs and MS-275 significantly induces apoptosis, which was accompanied by an increased level of reactive oxygen species (ROS); leakage of lactate dehydrogenase (LDH); secretion of TNFα; dysfunction of mitochondria; accumulation autophagosomes; caspase 9/3 activation; up and down regulation of pro-apoptotic genes and anti-apoptotic genes, respectively; and eventually, induced DNA-fragmentation. Our findings suggest that AgNPs and MS-275 induce cell death in A549 lung cells via the mitochondrial-mediated intrinsic apoptotic pathway. Finally, our data show that the combination of AgNPs and MS-275 is a promising new approach for the treatment of lung cancer and our findings contribute to understanding the potential roles of AgNPs and MS-275 in pulmonary disease. However, further study is warranted to potentiate the use of this combination therapy in cancer therapy trials.
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Affiliation(s)
- Sangiliyandi Gurunathan
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 05029, Korea.
| | - Min-Hee Kang
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 05029, Korea.
| | - Jin-Hoi Kim
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 05029, Korea.
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85
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Cheng Y, Zhao W, Zhang X, Sun L, Yang H, Wang Y, Cao Y, Chu Y, Liu G. Downregulation of microRNA-1 attenuates glucose-induced apoptosis by regulating the liver X receptor α in cardiomyocytes. Exp Ther Med 2018; 16:1814-1824. [PMID: 30186406 PMCID: PMC6122156 DOI: 10.3892/etm.2018.6388] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 02/08/2018] [Indexed: 02/07/2023] Open
Abstract
Diabetic cardiomyopathy (DCM) is characterized by abnormal myocardial structure or performance. It has been suggested that microRNA-1 (miR-1) may be abnormally expressed in the hearts of patients with diabetes. In the present study, the role of miR-1 in glucose-induced apoptosis and its underlying mechanism of action was investigated in rat cardiomyocyte H9C2 cells. Cells were transfected with anti-miR-1 or miR-1-overexpression plasmids and the expression of miR-1 and liver X receptor α (LXRα) were determined by reverse transcription-quantitative polymerase chain reaction analysis. The proportion of apoptotic cells was determined using an Annexin-V-FITC apoptosis detection kit and the mitochondrial membrane potential (ΔΨ) was measured following staining with rhodamine 123. In addition, the expression of apoptosis-associated proteins was measured by western blot analysis. The results demonstrated that expression of miR-1 was significantly increased, whereas the expression of LXRα was significantly decreased in H9C2 cells following treatment with glucose. miR-1 knockdown significantly inhibited apoptosis, increased the ΔΨ and suppressed the cleavage of poly (adenosine diphosphate-ribose) polymerase, caspase-3 and caspase-9. It also significantly downregulated the expression of Bcl-2 and upregulated the expression of Bax. In addition, it was demonstrated that miR-1 regulates LXRα; transfection with anti-miR-1 significantly increased the expression of LXRα. Furthermore, treatment of cells with the LXR agonist GW3965 inhibited apoptosis in glucose-induced anti-miR-1 cells. These results suggest a novel function of miR-1: The regulation of cardiomyocyte apoptosis via LXRα, and provide novel insights into regarding the complex mechanisms involved in DCM.
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Affiliation(s)
- Yongxia Cheng
- Department of Pathology, Mudanjiang Medical College, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Wei Zhao
- Department of Anatomy, Mudanjiang Medical College, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Xiaodong Zhang
- Department of Infectious Disease, Hongqi Hospital, Mudanjiang Medical College, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Lixin Sun
- School of Adult Education, Mudanjiang Medical College, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Heran Yang
- Department of Laboratory Medicine, Hongqi Hospital, Mudanjiang Medical College, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Ying Wang
- Department of Anatomy, Mudanjiang Medical College, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Yong Cao
- Department of Pathology, Mudanjiang Medical College, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Yanhui Chu
- Medical Pharmacology Research Center, Mudanjiang Medical College, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Guibo Liu
- Department of Anatomy, Mudanjiang Medical College, Mudanjiang, Heilongjiang 157011, P.R. China
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86
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Tong Y, Zhang G, Li Y, Xu J, Yuan J, Zhang B, Hu T, Song G. Corilagin inhibits breast cancer growth via reactive oxygen species-dependent apoptosis and autophagy. J Cell Mol Med 2018; 22:3795-3807. [PMID: 29923307 PMCID: PMC6050496 DOI: 10.1111/jcmm.13647] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 03/21/2018] [Indexed: 12/20/2022] Open
Abstract
Corilagin is a component of Phyllanthus urinaria extract and has been found of possessing anti‐inflammatory, anti‐oxidative, and anti‐tumour properties in clinic treatments. However, the underlying mechanisms in anti‐cancer particularly of its induction of cell death in human breast cancer remain undefined. Our research found that corilagin‐induced apoptotic and autophagic cell death depending on reactive oxygen species (ROS) in human breast cancer cell, and it occurred in human breast cancer cell (MCF‐7) only comparing with normal cells. The expression of procaspase‐8, procaspase‐3, PARP, Bcl‐2 and procaspase‐9 was down‐regulated while caspase‐8, cleaved PARP, caspase‐9 and Bax were up‐regulated after corilagin treatment, indicating apoptosis mediated by extrinsic and mitochondrial pathways occurred in MCF‐7 cell. Meanwhile, autophagy mediated by suppressing Akt/mTOR/p70S6K pathway was detected with an increase in autophagic vacuoles and LC3‐II conversion. More significantly, inhibition of autophagy by chloroquine diphosphate salt (CQ) remarkably enhanced apoptosis, while the caspase inhibitor z‐VAD‐fmk failed in affecting autophagy, suggesting that corilagin‐induced autophagy functioned as a survival mechanism in MCF‐7 cells. In addition, corilagin induced intracellular reactive oxygen species (ROS) generation, when reduced by ROS scavenger NAC, apoptosis and autophagy were both down‐regulated. Nevertheless, in SK‐BR3 cell which expressed RIP3, necroptosis inhibitor Nec‐1 could not alleviate cell death induced by corilagin, indicating necroptosis was not triggered. Subcutaneous tumour growth in nude mice was attenuated by corilagin, consisting with the results in vitro. These results imply that corilagin inhibits cancer cell proliferation through inducing apoptosis and autophagy which regulated by ROS release.
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Affiliation(s)
- Yinping Tong
- Cancer Research Center, Medical College of Xiamen University, Xiamen, China
| | - Gongye Zhang
- Cancer Research Center, Medical College of Xiamen University, Xiamen, China
| | - Yang Li
- Cancer Research Center, Medical College of Xiamen University, Xiamen, China
| | - Jiajia Xu
- Fisheries college, Jimei University, Xiamen, China
| | - Jiahui Yuan
- Cancer Research Center, Medical College of Xiamen University, Xiamen, China
| | - Bing Zhang
- Department of Basic Medicine, Medical College of Xiamen University, Xiamen, China
| | - Tianhui Hu
- Cancer Research Center, Medical College of Xiamen University, Xiamen, China
| | - Gang Song
- Cancer Research Center, Medical College of Xiamen University, Xiamen, China
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87
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Xu W, Gao L, Zheng J, Li T, Shao A, Reis C, Chen S, Zhang J. The Roles of MicroRNAs in Stroke: Possible Therapeutic Targets. Cell Transplant 2018; 27:1778-1788. [PMID: 29871520 PMCID: PMC6300776 DOI: 10.1177/0963689718773361] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Stroke is one of the most devastating diseases worldwide. In recent years, a great number of studies have focused on the effects of microRNAs (miRNAs) on stroke and the results demonstrated that the expressions of miRNAs are associated with the prognosis of stroke. In the present study, we review relevant articles regarding miRNAs and stroke and will explain the complex link between both. The miRNAs participate extensively in the pathophysiology following the stroke, including apoptosis, neuroinflammation, oxidative stress, blood–brain barrier (BBB) disruption and brain edema. The information about the stroke–miRNA system may be helpful for therapeutic and diagnostic methods in stroke treatment.
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Affiliation(s)
- Weilin Xu
- 1 Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Liansheng Gao
- 1 Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jingwei Zheng
- 1 Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Tao Li
- 1 Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Anwen Shao
- 1 Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Cesar Reis
- 4 Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Sheng Chen
- 1 Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jianmin Zhang
- 1 Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,2 Brain Research Institute, Zhejiang University, Hangzhou, Zhejiang, China.,3 Collaborative Innovation Center for Brain Science, Zhejiang University, Hangzhou, Zhejiang, China
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88
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Berger S, Lattmann E, Aegerter-Wilmsen T, Hengartner M, Hajnal A, deMello A, Casadevall i Solvas X. Long-term C. elegans immobilization enables high resolution developmental studies in vivo. LAB ON A CHIP 2018; 18:1359-1368. [PMID: 29652050 DOI: 10.1039/c7lc01185g] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Live-imaging of C. elegans is essential for the study of conserved cellular pathways (e.g. EGFR/Wnt signaling) and morphogenesis in vivo. However, the usefulness of live imaging as a research tool has been severely limited by the need to immobilize worms prior to and during imaging. Conventionally, immobilization is achieved by employing both physical and chemical interventions. These are known to significantly affect many physiological processes, and thus limit our understanding of dynamic developmental processes. Herein we present a novel, easy-to-use microfluidic platform for the long-term immobilization of viable, normally developing C. elegans, compatible with image acquisition at high resolution, thereby overcoming the limitations associated with conventional worm immobilization. The capabilities of the platform are demonstrated through the continuous assessment of anchor cell (AC) invasion and distal tip cell (DTC) migration in larval C. elegans and germ cell apoptosis in adult C. elegans in vivo for the first time.
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Affiliation(s)
- Simon Berger
- Institute of Chemical and Bioengineering, ETH Zurich, 8093 Zurich, Switzerland.
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89
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Ying J, Zhang M, Qiu X, Lu Y. The potential of herb medicines in the treatment of esophageal cancer. Biomed Pharmacother 2018; 103:381-390. [PMID: 29674273 DOI: 10.1016/j.biopha.2018.04.088] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 04/08/2018] [Accepted: 04/12/2018] [Indexed: 02/07/2023] Open
Abstract
Esophageal cancer (EC) is one of common malignant neoplasms in the world. Due to dietary habits, environmental factors, stress and so on, larger numbers of person are diagnose with EC every year. Currently, the clinical treatment of EC mainly includes radiotherapy, chemotherapy, surgical resection alone or combined strategy. These treatment options are insufficient and often associated with a number of side effects. Medicinal herbs containing Traditional Chinese Medicine (TCM) have been used as an adjunct treatment for alleviating the side effects of chemotherapy or radiotherapy and for improving the quality of life of cancer patients. The monomer compounds obtained from medicinal herbs also exhibit potential anti-cancer activity against various type cancer cell lines including esophageal cancer, and have the ability to enhance cancer cells sensitizing to chemotherapy or radiotherapy. In this review, we summarize some monomers and composite of medicinal herbs with anti-cancer activity for EC, and elaborate their mechanism of action. Understanding the exact mechanism of their actions may provide valuable information for their possible application in cancer therapy and prevention. This is beneficial for the use and development of medicinal herbs for diseases therapy in the future.
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Affiliation(s)
- Jie Ying
- Department of Clinical Research Center, Xuyi People's Hospital, PR China
| | - Miaomiao Zhang
- Department of Clinical Research Center, Xuyi People's Hospital, PR China
| | - Xiaoyan Qiu
- Department of Clinical Research Center, Xuyi People's Hospital, PR China
| | - Yu Lu
- Department of Clinical Research Center, Xuyi People's Hospital, PR China.
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90
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Abstract
There are several forms of brain-derived neurotrophic factor (BDNF), the precursor of BDNF, mature BDNF, and BDNF propeptide. They exert different effects through different transmembrane receptor signaling systems. Precursor of BDNF is enzymatically cleaved, either by intracellular or by extracellular proteases, to generate mature BDNF and its propeptide (BDNF propeptide). The aim of this study was to evaluate the potential molecular mechanisms that underlie the inhibition of glioma cell growth by the BDNF propeptide. To achieve this, we examined the expression of BDNF propeptide in C6 glioma cells. The 3-(4,5-dimethylthiazol-2-Yl)-2,5-diphenyltetrazolium bromide assay and the apoptosis assay were used to assess the effects of the BDNF propeptide on the growth and apoptosis of glioma cells. We found that the BDNF propeptide promoted C6 glioma cell apoptosis and decreased in-vitro cell growth. We also found using western blot that cleaved caspase3 and B cell lymphoma 2 (Bcl2)-associated X protein abundances increased, whereas Bcl2 abundance decreased. Our data suggest that the BDNF propeptide may have an inhibitory effect on glioma through activation of the caspase3 pathway.
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91
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Fludarabine inhibits STAT1-mediated up-regulation of caspase-3 expression in dexamethasone-induced osteoblasts apoptosis and slows the progression of steroid-induced avascular necrosis of the femoral head in rats. Apoptosis 2018; 22:1001-1012. [PMID: 28601953 DOI: 10.1007/s10495-017-1383-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Steroid-induced avascular necrosis of the femoral head (SANFH) is a major limitation of long-term or excessive clinical administration of glucocorticoids. Fludarabine, which is a compound used to treat various hematological malignancies, such as chronic lymphocytic leukemia, acts by down-regulating signal transducer and activator of transcription 1 (STAT1) by inhibiting STAT1 phosphorylation in both normal and cancer cells. This study assessed the effects of fludarabine in vitro (primary murine osteoblasts) and in vivo (rat SANFH model). In vitro, pretreatment with fludarabine significantly inhibited Dexamethasone (Dex)-induced apoptosis in osteoblasts, which was examined by TUNEL staining. Treatment with Dex caused a remarkable decrease in the expression of Bcl-2; an increase in cytochrome c release; activation of BAX, caspase-9, and caspase-3; and an obvious enhancement in STAT1 phosphorylation. However, treatment resulted in the up-regulation of caspase-3 expression. Enhanced P-STAT1 activity and up-regulation of caspase-3 expression were also observed in osteoblasts. In vivo, the subchondral trabeculae in fludarabine-treated rats exhibited less bone loss and a lower ratio of empty lacunae. Taken together, our results suggest that STAT1-mediated up-regulation of caspase-3 is involved in osteoblast apoptosis induced by Dex and indicates that fludarabine may serve as a potential agent for the treatment of SANFH.
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92
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Dasari S, Samy ALPA, Narvekar P, Dontaraju VS, Dasari R, Kornienko A, Munirathinam G. Polygodial analog induces apoptosis in LNCaP prostate cancer cells. Eur J Pharmacol 2018; 828:154-162. [PMID: 29572068 DOI: 10.1016/j.ejphar.2018.03.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 03/13/2018] [Accepted: 03/15/2018] [Indexed: 12/24/2022]
Abstract
Prostate cancer (PCa) is the second leading cause of death in American men. The chemotherapeutic treatment strategies are generally not effective and can lead to side effects. Hence, there is an urgent need to identify novel chemotherapeutic agents. The aim of this study was to synthesize and evaluate the therapeutic effects of a synthetic analog of polygodial (PG), a pungent constituent abundantly present in mountain pepper, water pepper and dorrigo pepper, on LNCaP PCa cell line and its anti-cancer mechanisms in a preclinical study. We evaluated the anti-cancer potential of the PG analog namely DRP-27 using various assays such as cell viability by MTT assay, anchorage independent growth by soft agar assay, reactive oxygen species generation by 2',7'-dichlorofluorescein probe-based fluorescence assay, and apoptosis by Annexin-V and TUNEL assays respectively. Western blot analysis was performed to identify the molecular mechanism of DRP-27-induced cell death. Our results showed that DRP-27 significantly inhibited LNCaP cell proliferation in a dose-dependent manner at 48 h treatment in vitro. In addition, DRP-27 potently inhibited anchorage-independent growth of these cells. Flow cytometry, Annexin-V and TUNEL assays confirmed that DRP-27 induces apoptosis in LNCaP cells. DRP-27 also induced the activation of intracellular reactive oxygen species. Western blot analysis revealed that DRP-27 downregulated the expression of survivin, while activating Bax and DNA damage marker pH2AX in LNCaP cells. In conclusion, our study suggests that DRP-27 might be an effective anti-cancer agent for PCa.
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Affiliation(s)
- Subramanyam Dasari
- Department of Biomedical Sciences, College of Medicine, University of Illinois, Rockford, IL, USA
| | | | - Parnal Narvekar
- Department of Biomedical Sciences, College of Medicine, University of Illinois, Rockford, IL, USA
| | | | - Ramesh Dasari
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Gnanasekar Munirathinam
- Department of Biomedical Sciences, College of Medicine, University of Illinois, Rockford, IL, USA.
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93
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Yang Y, Shi R, Soomro MH, Hu F, Du F, She R. Hepatitis E Virus Induces Hepatocyte Apoptosis via Mitochondrial Pathway in Mongolian Gerbils. Front Microbiol 2018; 9:460. [PMID: 29615994 PMCID: PMC5864903 DOI: 10.3389/fmicb.2018.00460] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 02/27/2018] [Indexed: 12/25/2022] Open
Abstract
Previous studies demonstrated that Mongolian gerbils can be infected by hepatitis E virus (HEV), which induces the hepatic injury. Here, the mitochondria in hepatocytes from HEV-infected gerbils were considerably swollen, thin cristae. After HEV infection, the activity of superoxide dismutase significantly decreased (p < 0.01), while malondialdehyde concentrations significantly increased, compared with those in the control group (p < 0.01). Adenosine triphosphatase levels decreased significantly in the hepatocyte of the inoculated groups, compared with those in control group (p < 0.05) at days 21, 28, 42 post-inoculation (dpi) as well. Furthermore, the levels of ATP synthetase ATP5A1 significantly decreased during HEV infection, compared with those in the control group (p < 0.05). According to the TdT mediated dUTP nick end labeling (TUNEL) detection, TUNEL positive hepatocytes increased in the inoculated group, compared with that in the control group (p < 0.05). Up-regulation of the mitochondrion-mediated apoptosis regulating proteins, Bax and Bcl-2, in the HEV-infected gerbils (p < 0.05) was observed. However, cytochrome c levels in mitochondria decreased, while this molecule was detected in the cytoplasm of the infected animals, in contrast to that in the control group. Apaf-1, and active caspase-9 and -3 levels were shown to be significantly higher in the inoculated group compared with those in the control group (p < 0.05). Taken together, our results demonstrated that HEV infection induces hepatocyte injuries and activity of the mitochondrial apoptotic pathway, which trigger the hepatocyte apoptosis in Mongolian gerbils.
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Affiliation(s)
- Yifei Yang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China.,Laboratory of Animal Pathology and Public Health, Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Ruihan Shi
- Laboratory of Animal Pathology and Public Health, Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Majid H Soomro
- Laboratory of Animal Pathology and Public Health, Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Fengjiao Hu
- Laboratory of Animal Pathology and Public Health, Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Fang Du
- Laboratory of Animal Pathology and Public Health, Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Ruiping She
- Laboratory of Animal Pathology and Public Health, Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
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94
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Chinese herb medicine matrine induce apoptosis in human esophageal squamous cancer KYSE-150 cells through increasing reactive oxygen species and inhibiting mitochondrial function. Pathol Res Pract 2018; 214:691-699. [PMID: 29567333 DOI: 10.1016/j.prp.2018.03.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 03/01/2018] [Accepted: 03/13/2018] [Indexed: 02/07/2023]
Abstract
Matrine, as a natural alkaloid isolated from the traditional herb medicine sophora flavescens, has been proved to possess excellent biological activities, including anticancer effects. Now, this research aims to assess the anticancer activities and the mechanism of matrine against esophageal cancer cells, we investigated the proliferative inhibition, apoptosis induction, as well as the underlying mechanism of matrine on esophageal cancer KYSE-150 cells. It was found that matrine could suppress KYSE-150 cell proliferation and significantly mediate cell apoptosis in a dose-dependent relation by increasing intracellular reactive oxygen species level and triggering mitochondrial membrane potential disruption. More precise mechanism studies demonstrated that matrine could up-regulate the expression of Bax proteins and down-regulate the expression of Bcl-2 proteins, as well as the activation about caspase-3, 8 and 9 in KYSE-150 cells. The morphological analysis of KYSE-150 cells exhibited that matrine could destroy the F-actin and nuclei structures and induce morphological damage with increased surface height distribution and roughness of cell membrane. These results not only demonstrated the potential anticancer activity mechanism of matrine at nanoscale, but also provide preliminary guidance for the treatment of esophageal cancer using matrine.
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95
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Chaabane W, Appell ML. Interconnections between apoptotic and autophagic pathways during thiopurine-induced toxicity in cancer cells: the role of reactive oxygen species. Oncotarget 2018; 7:75616-75634. [PMID: 27689330 PMCID: PMC5342765 DOI: 10.18632/oncotarget.12313] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 09/15/2016] [Indexed: 12/13/2022] Open
Abstract
Thiopurines (azathioprine, 6-mercaptopurine and 6-thioguanine) are a class of genotoxic drugs extensively used in the treatment of various illnesses including leukemia. Their underlying molecular mechanism of action involves the activation of apoptosis and autophagy but remains widely unclear. Here we present evidence that autophagy induction by thiopurines is a survival mechanism that antagonizes apoptosis and is involved in degrading damaged mitochondria through mitophagy. On the other hand, apoptosis is the main cell death mechanism by thiopurines as its inhibition prohibited cell death. Thus a tight interplay between apoptosis and autophagy controls cell fate in response to thiopurine treatment. Moreover, thiopurines disrupt mitochondrial function and induce a loss of the mitochondrial transmembrane potential. The involvement of the mitochondrial pathway in thiopurine-induced apoptosis was further confirmed by increased formation of reactive oxygen species (ROS). Inhibiting oxidative stress protected the cells from thiopurine-induced cell death and ROS scavenging prohibited autophagy induction by thiopurines. Our data indicate that the anticarcinogenic effects of thiopurines are mediated by complex interplay between cellular mechanisms governing redox homeostasis, apoptosis and autophagy.
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Affiliation(s)
- Wiem Chaabane
- Division of Drug Research, Department of Medical and Health Sciences, Linköping University, SE-58183 Linköping, Sweden
| | - Malin Lindqvist Appell
- Division of Drug Research, Department of Medical and Health Sciences, Linköping University, SE-58183 Linköping, Sweden
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96
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Zhang Y, Xu X, Li W, Miao H, Huang S, Zhou Y, Sun Y, Li Z, Guo Q, Zhao L. Activation of endoplasmic reticulum stress and the extrinsic apoptotic pathway in human lung cancer cells by the new synthetic flavonoid, LZ-205. Oncotarget 2018; 7:87257-87270. [PMID: 27895312 PMCID: PMC5349986 DOI: 10.18632/oncotarget.13535] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 11/02/2016] [Indexed: 01/08/2023] Open
Abstract
It has been shown that flavonoids have anti-tumor activity. In this study, LZ-205, a newly synthesized flavonoid, was found to be effective in inducing apoptosis in human lung cancer cells in vivo and in vitro. Mechanistically, LZ-205 triggers reactive oxygen species (ROS)-induced endoplasmic reticulum (ER) stress and unfolded protein response, which could be reversed by silencing CHOP, a mediator of the ER stress-associated apoptosis. In addition, LZ-205-induced apoptosis is accompanied by the activation of both the mitochondrial apoptotic and extrinsic pathways, followed by decreased mitochondrial membrane potential (ΔΨm) and the alteration of the expression of mitochondria-related pro- and anti-apoptotic proteins. LZ-205 exhibits a potential antitumor effect in BALB/c nude mice bearing H460 tumor with low systemic toxicity. In summary, both the ROS-mediated ER stress pathway and the exogenous apoptotic pathway are involved in LZ-205-induced apoptosis in vitro and in vivo. Our data show a therapeutic potential of LZ-205 for the treatment of lung cancer.
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Affiliation(s)
- Yi Zhang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Xuefen Xu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Wei Li
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Hanchi Miao
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Shaoliang Huang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Yuxin Zhou
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Yang Sun
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Zhiyu Li
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Qinglong Guo
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Li Zhao
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, People's Republic of China
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97
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Zhang Y, Bao W, Wang K, Lu W, Wang H, Tong H, Wan X. SOX17 is a tumor suppressor in endometrial cancer. Oncotarget 2018; 7:76036-76046. [PMID: 27738313 PMCID: PMC5342796 DOI: 10.18632/oncotarget.12582] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Accepted: 09/26/2016] [Indexed: 01/04/2023] Open
Abstract
β-catenin is a key regulatory factor for the Wnt signaling pathway. SOX17 is an important β-catenin inhibitor, while MAML3 is a co-activator of β-catenin-mediated transcription. Out of 120 endometrial cancer (EC) patients, we found that those with tumors expressing higher SOX17 (n=68) had longer recurrence-free survival (P=0.024), while higher MAML3 expression (n=76) was associated with shorter recurrence-free survival (P=0.022). Immunohistochemical and immunoprecipitation analyses revealed that SOX17 and MAML3 co-localized in EC cell nuclei, and the MAML3 C-terminal region was necessary for SOX17 binding. SOX17 regulated MAML3 transcription via binding to the MAML3 promoter, decreasing Wnt pathway protein expression and suppressing EC cell growth and colony formation in vitro. In nude mice, SOX17 over-expression inhibited tumor growth, and co-inhibition or co-overexpression of SOX17 and MAML3 rescued this response. Our results suggest that decreasing SOX17 levels may promote EC development and progression, and that by downregulating MAML3 expression and Wnt signaling, SOX17 acts as a tumor suppressor that may improve outcome in patients with EC.
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Affiliation(s)
- Yongli Zhang
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Wei Bao
- Department of Obstetrics and Gynecology, International Peace Maternity & Child Health Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kai Wang
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Wen Lu
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Huihui Wang
- Department of Obstetrics and Gynecology, International Peace Maternity & Child Health Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huan Tong
- Department of Obstetrics and Gynecology, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Xiaoping Wan
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
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98
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Banta KL, Wang X, Das P, Winoto A. B cell lymphoma 2 (Bcl-2) residues essential for Bcl-2's apoptosis-inducing interaction with Nur77/Nor-1 orphan steroid receptors. J Biol Chem 2018; 293:4724-4734. [PMID: 29414782 DOI: 10.1074/jbc.ra117.001101] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 01/30/2018] [Indexed: 01/14/2023] Open
Abstract
Apoptosis is mediated through the extrinsic or intrinsic pathway. Key regulators of the intrinsic apoptotic pathway are the family of B cell lymphoma 2 (Bcl-2) proteins. The activity of the prototypical Bcl-2 protein is usually considered antiapoptotic. However, under some conditions, Bcl-2 associates with the orphan nuclear hormone receptors Nur77 and Nor-1, converting Bcl-2 into a proapoptotic molecule. Expression of Nur77 and Nor-1 is induced by a variety of signals, including those leading to apoptosis. Translocation of Nur77/Nor-1 to mitochondria results in their association with Bcl-2, exposing the Bcl-2 homology (BH) 3 domain and causing apoptosis. However, the molecular details of this interaction are incompletely understood. Here, through extensive Bcl-2 mutagenesis and functional assays, we identified residues within Bcl-2 that are essential for its interaction with Nur77/Nor-1. Although an initial report has suggested that an unstructured loop region between the Bcl-2 BH4 and BH3 domains is required for Bcl-2's interaction with Nur77/Nor-1, we found that it is dispensable for this interaction. Instead, we found important interacting residues at the BH4 domain and crucial interacting residues between the BH1 and BH2 domains. Bcl-2 alanine mutants at this region could no longer interact with Nur77/Nor-1 and could not initiate Nur77/Bcl-2-mediated cell death. However, they still retained their anti-apoptotic capability in two different death assays. These results establish crucial residues in Bcl-2 required for Nur77/Nor-1-mediated apoptosis and point to potential new strategies for manipulating Bcl-2 function.
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Affiliation(s)
- Karl L Banta
- Department of Molecular and Cell Biology and Cancer Research Laboratory, University of California, Berkeley, California 94720-3200
| | - Xinyue Wang
- Department of Molecular and Cell Biology and Cancer Research Laboratory, University of California, Berkeley, California 94720-3200
| | - Phani Das
- Department of Molecular and Cell Biology and Cancer Research Laboratory, University of California, Berkeley, California 94720-3200
| | - Astar Winoto
- Department of Molecular and Cell Biology and Cancer Research Laboratory, University of California, Berkeley, California 94720-3200.
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99
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Gajski G, Gerić M, Oreščanin V, Garaj-Vrhovac V. Cytokinesis-block micronucleus cytome assay parameters in peripheral blood lymphocytes of the general population: Contribution of age, sex, seasonal variations and lifestyle factors. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 148:561-570. [PMID: 29127818 DOI: 10.1016/j.ecoenv.2017.11.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 09/26/2017] [Accepted: 11/01/2017] [Indexed: 06/07/2023]
Abstract
The cytokinesis-block micronucleus cytome (CBMN Cyt) assay was used to evaluate the baseline frequency of cytogenetic damage in peripheral blood lymphocytes of the general population (average age, 38.28 ± 12.83 years) in relation to age, sex, body mass index, seasonal variations (season of sampling, period of sampling and different meteorological parameters) and lifestyle factors (smoking habit, alcohol consumption, exposure to medications and diagnostic radiation, physical activity, and family history of cancer). The background frequency of micronuclei (MNi) for the 200 subjects assayed was 5.06 ± 3.11 per 1000 binucleated cells, while the mean frequency of nucleoplasmic bridges (NPBs) was 1.21 ± 1.46 and of nuclear buds (NBUDs) 3.48 ± 2.14. The background frequency of apoptosis and necrosis was 1.58 ± 1.50 and 1.39 ± 1.56, respectively, while the mean nuclear division index (NDI) was 1.99 ± 0.14. The cut-off value, which corresponds to the 95th percentile of the distribution of 200 individual values, was 11 MNi, 4 NPBs and 7 NBUDs. The study also confirmed an association of the above mentioned parameters with age, sex and several lifestyle factors. Moreover, significant confounders based on our results are also sampling season, sampling period and different meteorological parameters that were dependent on the CBMN Cyt assay parameters. In line with the above mentioned, several factors should be taken into account when it comes to the monitoring of exposed populations using cytogenetic biomarkers. Moreover, the normal and cut-off values obtained in this study present background data for the general population, and can later serve as baseline values for further biomonitoring studies.
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Affiliation(s)
- Goran Gajski
- Institute for Medical Research and Occupational Health, Mutagenesis Unit, 10000 Zagreb, Croatia.
| | - Marko Gerić
- Institute for Medical Research and Occupational Health, Mutagenesis Unit, 10000 Zagreb, Croatia.
| | | | - Vera Garaj-Vrhovac
- Institute for Medical Research and Occupational Health, Mutagenesis Unit, 10000 Zagreb, Croatia.
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100
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Niu F, Liu Y, Jing Z, Han G, Sun L, Yan L, Zhou L, Wu Y, Xu Y, Hu L, Zhao X. Novel carbazole sulfonamide microtubule-destabilizing agents exert potent antitumor activity against esophageal squamous cell carcinoma. Cancer Lett 2018; 420:60-71. [PMID: 29408653 DOI: 10.1016/j.canlet.2018.01.066] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 01/19/2018] [Accepted: 01/22/2018] [Indexed: 01/11/2023]
Abstract
Esophageal squamous cell carcinoma (ESCC) is one of the most common cancers worldwide due to its chemoresistance and poor prognosis. Currently, there is a lack of effective small molecule drugs for the treatment of ESCC. Microtubules are an attractive target for cancer therapy since they play a central role in various fundamental cell functions. We investigated the anti-ESCC activity and mechanisms of the small molecule tubulin ligands, SL-3-19 and SL-1-73, which are two carbazole sulfonamide derivatives, in vitro and in vivo for the first time. These drugs were previously screened from a small molecule library with over 450 compounds and optimized for high aqueous solubility [1,2]. Here, we reveal the promising activities of these compounds against esophageal cancer. Mechanistically, both SL-3-19 and SL-1-73 inhibited ESCC cell growth by inducing cell apoptosis and arresting the cell cycle at G2/M phase in a dose-dependent manner. These drugs effectively inhibited microtubule assembly, greatly disrupted microtubule maturation by down-regulating acetylated α-tubulin, and significantly disrupted the vascular structure by obstructing the formation of capillary-like tubes in vitro. Consistent with their in vitro activities, SL-3-19 and SL-1-73 inhibited the growth of ESCC xenografts and inhibited the microvessel density in vivo. In summary, SL-3-19 and SL-1-73 are novel microtubule-destabilizing agents that have a potential antitumor effect on ESCC both in vitro and in vivo, and SL-3-19 had a higher activity than SL-1-73, with a low IC50 value and an observable antitumor activity in vivo. These results indicate that SL-3-19 may be a new therapeutic candidate for ESCC treatment.
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Affiliation(s)
- Fangfei Niu
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, China
| | - Yonghua Liu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Zongpan Jing
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, China
| | - Gaijing Han
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, China
| | - Lianqi Sun
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Lu Yan
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, China
| | - Lanping Zhou
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, China
| | - Yanbin Wu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Yang Xu
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, China
| | - Laixing Hu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China.
| | - Xiaohang Zhao
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, China.
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