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Anticancer Effects of Midazolam on Lung and Breast Cancers by Inhibiting Cell Proliferation and Epithelial-Mesenchymal Transition. Life (Basel) 2021; 11:life11121396. [PMID: 34947927 PMCID: PMC8703822 DOI: 10.3390/life11121396] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/09/2021] [Accepted: 12/09/2021] [Indexed: 01/15/2023] Open
Abstract
Despite improvements in cancer treatments resulting in higher survival rates, the proliferation and metastasis of tumors still raise new questions in cancer therapy. Therefore, new drugs and strategies are still needed. Midazolam (MDZ) is a common sedative drug acting through the γ-aminobutyric acid receptor in the central nervous system and also binds to the peripheral benzodiazepine receptor (PBR) in peripheral tissues. Previous studies have shown that MDZ inhibits cancer cell proliferation but increases cancer cell apoptosis through different mechanisms. In this study, we investigated the possible anticancer mechanisms of MDZ on different cancer cell types. MDZ inhibited transforming growth factor β (TGF-β)-induced cancer cell proliferation of both A549 and MCF-7 cells. MDZ also inhibited TGF-β-induced cell migration, invasion, epithelial-mesenchymal-transition, and Smad phosphorylation in both cancer cell lines. Inhibition of PBR by PK11195 rescued the MDZ-inhibited cell proliferation, suggesting that MDZ worked through PBR to inhibit TGF-β pathway. Furthermore, MDZ inhibited proliferation, migration, invasion and levels of mesenchymal proteins in MDA-MD-231 triple-negative breast cancer cells. Together, MDZ inhibits cancer cell proliferation both in epithelial and mesenchymal types and EMT, indicating an important role for MDZ as a candidate to treat lung and breast cancers.
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Gao ZW, Huang YY, Zhang JQ, Rong JY, Qiao GY, Chen N, Yu GD, Luo M, Liu XF. Paeoniflorin elicits the anti-proliferative effects on glioma cell via targeting translocator protein 18 KDa. J Pharmacol Sci 2020; 145:115-121. [PMID: 33357769 DOI: 10.1016/j.jphs.2020.10.004] [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: 09/17/2019] [Revised: 03/17/2020] [Accepted: 04/08/2020] [Indexed: 10/23/2022] Open
Abstract
As a natural compound isolated from Paeoniae radix, Paeoniflorin (PF) has been shown the antitumor effects in various types of human cancers including glioma, which is one of the serious tumors in central nervous system. Translocator protein 18 KDa (TSPO) has been shown to be relevant to the glioma aetiology. However, the regulation of PF in TSPO and neurosteriods biosynthesis on glioma is still unclear. In the present study, the glioma cell (U87 and U251) were cultured and used to quantify the bindings of PF on TSPO. Results indicated that there was not significant different between IC50 of PF and TSPO ligand PK11195. Moreover, PF exerted the anti-proliferative effects in glioma cell with a dose dependent inhibition from 12.5 to 100 μM in vitro. Consistent with the effects of PK11195, lowered levels on progesterone, allopregnanolone, as well as TSPO mRNA were induced by PF (25 and 50 μM). Furthermore, a xenograft mouse model with U87 cell-derived was significant inhibited by PF treatment, as well as the PK11195 administration. These results demonstrate that PF exerts its antitumor effects associated with the TSPO and neurosteroids biosynthesis in glioma cells could be a promising therapeutic agent for glioma therapy.
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Affiliation(s)
- Zhuo-Wei Gao
- Shunde Hospital of Guangzhou University of TCM, Foshan, Guangdong, 528300, China; School of Traditional Chinese Medicine, Southern Medical University Guangzhou, Guangdong, 510515, China
| | - Yu-Yun Huang
- Shunde Hospital of Guangzhou University of TCM, Foshan, Guangdong, 528300, China
| | - Jia-Qi Zhang
- Shunde Hospital of Guangzhou University of TCM, Foshan, Guangdong, 528300, China
| | - Jing-Yu Rong
- Shunde Hospital of Guangzhou University of TCM, Foshan, Guangdong, 528300, China
| | - Guan-Ying Qiao
- Shunde Hospital of Guangzhou University of TCM, Foshan, Guangdong, 528300, China
| | - Nan Chen
- Shunde Hospital of Guangzhou University of TCM, Foshan, Guangdong, 528300, China
| | - Guo-Dong Yu
- Shunde Hospital of Guangzhou University of TCM, Foshan, Guangdong, 528300, China.
| | - Min Luo
- Nanfang Hospital of Southern Medical University, Guangzhou, Guangdong, 510515, China.
| | - Xiao-Fen Liu
- The Fifth Affiliated Hospital of Southern Medical University, China Guangzhou, Guangdong, 510900, China.
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Gong Z, Han Y, Wu L, Xia T, Ren H, Yang D, Gu D, Wang H, Hu C, He D, Zhou L, Zeng C. Translocator protein 18 kDa ligand alleviates neointimal hyperplasia in the diabetic rat artery injury model via activating PKG. Life Sci 2019; 221:72-82. [PMID: 30738868 DOI: 10.1016/j.lfs.2019.02.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 02/03/2019] [Accepted: 02/06/2019] [Indexed: 01/01/2023]
Abstract
AIMS The proliferation of VSMCs is the pathologic basis for intimal hyperplasia after angioplasty in diabetic patients. Translocator protein (TSPO), located in the outer mitochondrial membrane, has been found to regulate redox intermediate components in cell dysfunction. We hypothesized that TSPO may regulate VSMC proliferation and migration, and be involved in the intimal hyperplasia after angioplasty in diabetes. MATERIALS AND METHODS Cell proliferation was measured by cell counting and MTT assays. Cell migration was measured by Transwell® and scratch-wound assays. TSPO expression in arteries of rats and high glucose-treated A10 cells were detected by immunoblotting and immunofluorescence staining. Neointimal formation of carotid artery was induced by balloon injury in type 2 diabetic rat. KEY FINDINGS TSPO expression was increased in the arterial samples from diabetic rats and A10 cells treated with high glucose. Down-regulation of TSPO expression by siRNA decreased the high-glucose-induced VSMC proliferation and migration in A10 cells. This phenomenon could be simulated by using TSPO ligands, PK 11195 and Ro5-4864. cGMP/PKG signals were involved in the TSPO ligand action, since in the presence of cGMP or PKG inhibitor ODQ or KT5823 respectively, the effect of PK 11195 on VSMC proliferation was blocked. Furthermore, PK 11195 significantly inhibited neointimal formation by the inhibition of VSMC proliferation. SIGNIFICANCE This study suggests that TSPO inhibition suppresses the proliferation and migration of VSMCs induced by hyperglycemia, consequently, preventing atherosclerosis and restenosis after angioplasty in diabetic conditions. TSPO may be a potential therapeutic target to reduce arterial remodeling induced by angioplasty in diabetes.
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Affiliation(s)
- Zhengfan Gong
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China; Chongqing Institute of Cardiology, Chongqing Key Laboratory of Hypertension Research, Chongqing, PR China
| | - Yu Han
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China; Chongqing Institute of Cardiology, Chongqing Key Laboratory of Hypertension Research, Chongqing, PR China
| | - Lianpan Wu
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China; Chongqing Institute of Cardiology, Chongqing Key Laboratory of Hypertension Research, Chongqing, PR China
| | - Tianyang Xia
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China; Chongqing Institute of Cardiology, Chongqing Key Laboratory of Hypertension Research, Chongqing, PR China
| | - Hongmei Ren
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China; Chongqing Institute of Cardiology, Chongqing Key Laboratory of Hypertension Research, Chongqing, PR China
| | - Donghai Yang
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China; Chongqing Institute of Cardiology, Chongqing Key Laboratory of Hypertension Research, Chongqing, PR China
| | - Daqian Gu
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China; Chongqing Institute of Cardiology, Chongqing Key Laboratory of Hypertension Research, Chongqing, PR China
| | - He Wang
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China; Chongqing Institute of Cardiology, Chongqing Key Laboratory of Hypertension Research, Chongqing, PR China; Department of Cardiology, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, PR China
| | - Cuimei Hu
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China; Chongqing Institute of Cardiology, Chongqing Key Laboratory of Hypertension Research, Chongqing, PR China
| | - Duofen He
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China; Chongqing Institute of Cardiology, Chongqing Key Laboratory of Hypertension Research, Chongqing, PR China
| | - Lin Zhou
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China; Chongqing Institute of Cardiology, Chongqing Key Laboratory of Hypertension Research, Chongqing, PR China.
| | - Chunyu Zeng
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China; Chongqing Institute of Cardiology, Chongqing Key Laboratory of Hypertension Research, Chongqing, PR China.
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Xu JN, Shen D, Mao WD, Lin QF, Lin F, Lu C. The effects of PK11195 on the MCF-7 and T47D were associated with the allopregnanolone biosynthesis, which was mediated by Translocator Protein 18 KDa. Cancer Biomark 2016; 17:11-6. [PMID: 27062569 DOI: 10.3233/cbm-160610] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jia-Ning Xu
- Department of Emergency, The Affiliated Jiangyin Hospital of Southeast University Medical College, Jiangyin, Jiangsu, China
| | - Dong Shen
- Department of Oncology, The Affiliated Jiangyin Hospital of Southeast University Medical College, Jiangyin, Jiangsu, China
| | - Wei-Dong Mao
- Department of Oncology, The Affiliated Jiangyin Hospital of Southeast University Medical College, Jiangyin, Jiangsu, China
| | - Qing-Fen Lin
- Department of Oncology, The Affiliated Jiangyin Hospital of Southeast University Medical College, Jiangyin, Jiangsu, China
| | - Feng Lin
- Department of Oncology, The Affiliated Jiangyin Hospital of Southeast University Medical College, Jiangyin, Jiangsu, China
| | - Chao Lu
- Department of Oncology, The Affiliated Jiangyin Hospital of Southeast University Medical College, Jiangyin, Jiangsu, China
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Gatliff J, East D, Crosby J, Abeti R, Harvey R, Craigen W, Parker P, Campanella M. TSPO interacts with VDAC1 and triggers a ROS-mediated inhibition of mitochondrial quality control. Autophagy 2014; 10:2279-96. [PMID: 25470454 PMCID: PMC4502750 DOI: 10.4161/15548627.2014.991665] [Citation(s) in RCA: 152] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 09/17/2014] [Accepted: 09/22/2014] [Indexed: 01/03/2023] Open
Abstract
The 18-kDa TSPO (translocator protein) localizes on the outer mitochondrial membrane (OMM) and participates in cholesterol transport. Here, we report that TSPO inhibits mitochondrial autophagy downstream of the PINK1-PARK2 pathway, preventing essential ubiquitination of proteins. TSPO abolishes mitochondrial relocation of SQSTM1/p62 (sequestosome 1), and consequently that of the autophagic marker LC3 (microtubule-associated protein 1 light chain 3), thus leading to an accumulation of dysfunctional mitochondria, altering the appearance of the network. Independent of cholesterol regulation, the modulation of mitophagy by TSPO is instead dependent on VDAC1 (voltage-dependent anion channel 1), to which TSPO binds, reducing mitochondrial coupling and promoting an overproduction of reactive oxygen species (ROS) that counteracts PARK2-mediated ubiquitination of proteins. These data identify TSPO as a novel element in the regulation of mitochondrial quality control by autophagy, and demonstrate the importance for cell homeostasis of its expression ratio with VDAC1.
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Key Words
- ATP5B, ATP synthase, H+ transporting, mitochondrial F1 complex, β subunit
- DAPI, 4’, 6-diamidino-2-phenylindole
- DHE, dihydroethidium
- DNM1L, dynamin 1-like
- FCCP, carbonyl cyanide-4-(trifluoromethoxy)phenylhydrazone
- GAPDH, glyceraldehyde-3-phosphate dehydrogenase
- GSH, glutathione
- MAP1LC3/LC3, microtubule-associated protein 1 light chain 3
- MCB, monochlorobimane
- MEFs, mouse embryonic fibroblasts
- MnTBAP, manganese [III] tetrakis (4-benzoic acid) porphyrin
- MβCD, methyl-β-cyclodextrin
- NRF1, nuclear respiratory factor 1
- OMM, outer mitochondrial membrane
- PARK2
- PBS, phosphate-buffered saline
- PINK1, PTEN-induced putative kinase 1
- PRKCE, protein kinase C, epsilon
- RM, recording medium
- ROS
- ROS, reactive oxygen species
- RT, room temperature
- SQSTM1, sequestosome 1
- TFAM, transcription factor A, mitochondrial
- TMRM, tetramethylrhodamine methyl ester
- TSPO
- TSPO, translocator protein
- VDAC1, voltage-dependent anion channel 1
- YFP, yellow fluorescent protein
- mitochondria
- mitophagy
- mtRFP, mitochondrially targeted red fluorescent protein
- nsc, nonsilencing control
- siRNA, small interfering ribonucleic acid
- ubiquitin
- Δψm, mitochondrial membrane potential
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Affiliation(s)
- Jemma Gatliff
- Department of Comparative Biomedical Sciences; The Royal Veterinary College; University of London; London, UK
| | - Daniel East
- Department of Comparative Biomedical Sciences; The Royal Veterinary College; University of London; London, UK
| | - James Crosby
- Department of Comparative Biomedical Sciences; The Royal Veterinary College; University of London; London, UK
| | | | - Robert Harvey
- Department of Pharmacology; UCL School of Pharmacy; London, UK
| | - William Craigen
- Department of Molecular and Human Genetics; Baylor College of Medicine; Houston, TX USA
| | - Peter Parker
- London Research Institute; Lincoln's Inn Fields Laboratories; London, UK
- Division of Cancer Studies; King's College; London, UK
| | - Michelangelo Campanella
- Department of Comparative Biomedical Sciences; The Royal Veterinary College; University of London; London, UK
- University College London Consortium for Mitochondrial Research; London, UK
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Kuhnast B, Damont A, Hinnen F, Catarina T, Demphel S, Le Helleix S, Coulon C, Goutal S, Gervais P, Dollé F. [18F]DPA-714, [18F]PBR111 and [18F]FEDAA1106-selective radioligands for imaging TSPO 18 kDa with PET: automated radiosynthesis on a TRACERLAb FX-FN synthesizer and quality controls. Appl Radiat Isot 2011; 70:489-97. [PMID: 22104496 DOI: 10.1016/j.apradiso.2011.10.015] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 10/19/2011] [Accepted: 10/25/2011] [Indexed: 10/15/2022]
Abstract
Imaging of TSPO 18 kDa with PET is more and more considered as a relevant biomarker of inflammation in numerous diseases. Development of new radiotracers for TSPO 18 kDa has seen acceleration in the last years and the challenge today is to make available large amounts of such a radiotracer in compliance with GMP standards for application in humans. We present in this technical note automated productions of [(18)F]DPA-714, [(18)F]PBR111 and [(18)F]FEDAA1106, three promising radiotracers for TSPO 18 kDa imaging, using a TRACERlab FX-FN synthesizer. This note also includes the quality control data of the validation batches for the manufacturing qualification of clinical production of [(18)F]DPA-714.
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Lee H, Kim J, Yang H. Steroidogenic acute regulatory protein (StAR) and peripheral-type benzodiazepine receptor (PBR) are decreased in human apoptotic embryos. Anim Cells Syst (Seoul) 2011. [DOI: 10.1080/19768354.2011.604102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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