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Xu C, Chen H, Zhou S, Sun C, Xia X, Peng Y, Zhuang J, Fu X, Zeng H, Zhou H, Cao Y, Yu Q, Li Y, Hu L, Zhou G, Yan F, Chen G, Li J. Pharmacological Activation of RXR-α Promotes Hematoma Absorption via a PPAR-γ-dependent Pathway After Intracerebral Hemorrhage. Neurosci Bull 2021; 37:1412-1426. [PMID: 34142331 DOI: 10.1007/s12264-021-00735-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 02/16/2021] [Indexed: 12/26/2022] Open
Abstract
Endogenously eliminating the hematoma is a favorable strategy in addressing intracerebral hemorrhage (ICH). This study sought to determine the role of retinoid X receptor-α (RXR-α) in the context of hematoma absorption after ICH. Our results showed that pharmacologically activating RXR-α with bexarotene significantly accelerated hematoma clearance and alleviated neurological dysfunction after ICH. RXR-α was expressed in microglia/macrophages, neurons, and astrocytes. Mechanistically, bexarotene promoted the nuclear translocation of RXR-α and PPAR-γ, as well as reducing neuroinflammation by modulating microglia/macrophage reprograming from the M1 into the M2 phenotype. Furthermore, all the beneficial effects of RXR-α in ICH were reversed by the PPAR-γ inhibitor GW9662. In conclusion, the pharmacological activation of RXR-α confers robust neuroprotection against ICH by accelerating hematoma clearance and repolarizing microglia/macrophages towards the M2 phenotype through PPAR-γ-related mechanisms. Our data support the notion that RXR-α might be a promising therapeutic target for ICH.
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Affiliation(s)
- Chaoran Xu
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Huaijun Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Shengjun Zhou
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Chenjun Sun
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Xiaolong Xia
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Yucong Peng
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Jianfeng Zhuang
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Xiongjie Fu
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Hanhai Zeng
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Hang Zhou
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Yang Cao
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Qian Yu
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Yin Li
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Libin Hu
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Guoyang Zhou
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Feng Yan
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Gao Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China.
| | - Jianru Li
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China.
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Abdel-Bakky MS, Helal GK, El-Sayed EM, Alhowail AH, Mansour AM, Alharbi KS, Amin E, Allam S, Salama SA, Saad AS. Silencing of tissue factor by antisense deoxyoligonucleotide mitigates thioacetamide-induced liver injury. Naunyn Schmiedebergs Arch Pharmacol 2020; 393:1887-1898. [PMID: 32430618 DOI: 10.1007/s00210-020-01896-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 05/01/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Retinoid receptors (RRs), RAR-α and RXR-α, work as transcription factors that regulate cell growth, differentiation, survival, and death. Hepatic stellate cells (HSCs) store retinoid and release its RRs as lipid droplets upon their activation. PURPOSE We test the hypothesis that loss of retinoid receptors RAR-α and RXR-α from HSCs is dependent on tissue factor (TF) during thioacetamide (TAA)-induced liver injury. METHODS Liver toxicity markers, TF, fibrin, cleaved caspase-3, and cyclin D1 as well as histopathology were investigated. RESULTS Increased TF, fibrin, cleaved caspase-3, and cyclin D1 protein expression is seen in zone of central vein after TAA injection compared with vehicle-treated mice. A strong downregulation of RAR-α and RXR-α is seen in TAA-induced liver injury. In addition, histopathological obliteration and pericentral expression of cleaved caspase 3 and cyclin D1 are observed after TAA injection compared with the normal vehicle-treated mice. No changes have been seen in TAA/TF-sense (SC) in whole parameters compared with TAA-treated animals. TAA/TF-antisense (AS)-treated mice show normal expression of all parameters and normal histopathological features when compared with the control mice. In conclusion, this study declares that the strong downregulation of RAR-α and RXR-α may cause liver injury and particularly activation of HSCs in TAA-induced toxicity. TF-AS treatment not only downregulates TF protein expression but also alleviates loss of liver RAR-α and RXR-α and suppresses the activated apoptosis signals in TAA-induced liver toxicity. Finally, TF and RAR-α/RXR-α are important regulatory molecules in TAA induced acute liver injury.
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Affiliation(s)
- M S Abdel-Bakky
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Cairo, 11751, Egypt. .,Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, Buraydah, 51452, Kingdom of Saudi Arabia.
| | - G K Helal
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Cairo, 11751, Egypt.,Department of Pharmacology and Toxicology, Faculty of Pharmacy, Heliopolis University, Cairo, Egypt
| | - E M El-Sayed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Cairo, 11751, Egypt
| | - A H Alhowail
- Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, Buraydah, 51452, Kingdom of Saudi Arabia
| | - A M Mansour
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Cairo, 11751, Egypt
| | - K S Alharbi
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakakah, 72341, Kingdom of Saudi Arabia
| | - Elham Amin
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62514, Egypt.,Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Buraydah, 52471, Kingdom of Saudi Arabia
| | - S Allam
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Kafralsheikh University, Kafralsheikh, Egypt
| | - S A Salama
- Department of Biochemistry, Faculty of Pharmacy, Al-Azhar University, Cairo, 11751, Egypt.,Division of Biochemistry, Department of Pharmacology and GTMR Unit, College of Clinical Pharmacy, Taif University, Taif, 21974, Saudi Arabia
| | - A S Saad
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Port Said University, Port Said, Egypt
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Furman C, Zhu P, Korpal M. Modulation of immunosurveillance by tumor-intrinsic genomic alterations. Immunotherapy 2017; 9:1305-1307. [PMID: 29185394 DOI: 10.2217/imt-2017-0132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Craig Furman
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA 02139, USA
| | - Ping Zhu
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA 02139, USA
| | - Manav Korpal
- H3 Biomedicine, Inc., 300 Technology Square, Cambridge, MA 02139, USA
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