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Kim S, Chun H, Kim Y, Kim Y, Park U, Chu J, Bhalla M, Choi SH, Yousefian-Jazi A, Kim S, Hyeon SJ, Kim S, Kim Y, Ju YH, Lee SE, Lee H, Lee K, Oh SJ, Hwang EM, Lee J, Lee CJ, Ryu H. Astrocytic autophagy plasticity modulates Aβ clearance and cognitive function in Alzheimer's disease. Mol Neurodegener 2024; 19:55. [PMID: 39044253 PMCID: PMC11267931 DOI: 10.1186/s13024-024-00740-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 06/20/2024] [Indexed: 07/25/2024] Open
Abstract
BACKGROUND Astrocytes, one of the most resilient cells in the brain, transform into reactive astrocytes in response to toxic proteins such as amyloid beta (Aβ) in Alzheimer's disease (AD). However, reactive astrocyte-mediated non-cell autonomous neuropathological mechanism is not fully understood yet. We aimed our study to find out whether Aβ-induced proteotoxic stress affects the expression of autophagy genes and the modulation of autophagic flux in astrocytes, and if yes, how Aβ-induced autophagy-associated genes are involved Aβ clearance in astrocytes of animal model of AD. METHODS Whole RNA sequencing (RNA-seq) was performed to detect gene expression patterns in Aβ-treated human astrocytes in a time-dependent manner. To verify the role of astrocytic autophagy in an AD mouse model, we developed AAVs expressing shRNAs for MAP1LC3B/LC3B (LC3B) and Sequestosome1 (SQSTM1) based on AAV-R-CREon vector, which is a Cre recombinase-dependent gene-silencing system. Also, the effect of astrocyte-specific overexpression of LC3B on the neuropathology in AD (APP/PS1) mice was determined. Neuropathological alterations of AD mice with astrocytic autophagy dysfunction were observed by confocal microscopy and transmission electron microscope (TEM). Behavioral changes of mice were examined through novel object recognition test (NOR) and novel object place recognition test (NOPR). RESULTS Here, we show that astrocytes, unlike neurons, undergo plastic changes in autophagic processes to remove Aβ. Aβ transiently induces expression of LC3B gene and turns on a prolonged transcription of SQSTM1 gene. The Aβ-induced astrocytic autophagy accelerates urea cycle and putrescine degradation pathway. Pharmacological inhibition of autophagy exacerbates mitochondrial dysfunction and oxidative stress in astrocytes. Astrocyte-specific knockdown of LC3B and SQSTM1 significantly increases Aβ plaque formation and GFAP-positive astrocytes in APP/PS1 mice, along with a significant reduction of neuronal marker and cognitive function. In contrast, astrocyte-specific overexpression of LC3B reduced Aβ aggregates in the brain of APP/PS1 mice. An increase of LC3B and SQSTM1 protein is found in astrocytes of the hippocampus in AD patients. CONCLUSIONS Taken together, our data indicates that Aβ-induced astrocytic autophagic plasticity is an important cellular event to modulate Aβ clearance and maintain cognitive function in AD mice.
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Affiliation(s)
- Suhyun Kim
- K-Laboratory, Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Heejung Chun
- College of Pharmacy, Yonsei-SL Bigen Institute (YSLI), Yonsei University, Incheon, 21983, Republic of Korea
| | - Yunha Kim
- K-Laboratory, Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Yeyun Kim
- K-Laboratory, Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Department of Integrated Biomedical and Life Science, Graduate School, Korea University, Seoul, 02841, Republic of Korea
| | - Uiyeol Park
- K-Laboratory, Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Deaprtment of Medicine, Hanyang University Medical School, Seoul, 04763, Republic of Korea
| | - Jiyeon Chu
- K-Laboratory, Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Department of Integrated Biomedical and Life Science, Graduate School, Korea University, Seoul, 02841, Republic of Korea
| | - Mridula Bhalla
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
| | - Seung-Hye Choi
- Severance Biomedical Science Institute, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Ali Yousefian-Jazi
- K-Laboratory, Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Sojung Kim
- K-Laboratory, Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Department of Integrated Biomedical and Life Science, Graduate School, Korea University, Seoul, 02841, Republic of Korea
| | - Seung Jae Hyeon
- K-Laboratory, Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Seungchan Kim
- K-Laboratory, Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Yeonseo Kim
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Yeon Ha Ju
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
| | - Seung Eun Lee
- Research Animal Resource Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Hyunbeom Lee
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Kyungeun Lee
- Advanced Analysis and Data Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Soo-Jin Oh
- K-Laboratory, Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Eun Mi Hwang
- Center for Brain Function, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Junghee Lee
- Department of Neurology, Boston University Alzheimer's Disease Research Center, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, 02118, USA.
- VA Boston Healthcare System, Boston, MA, 02130, USA.
| | - C Justin Lee
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea.
- IBS School, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea.
| | - Hoon Ryu
- K-Laboratory, Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea.
- Department of Converging Science and Technology, KHU-KIST, Kyung Hee University, Seoul, 02447, Republic of Korea.
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Yeh PS, Liu CT, Yu CY, Chang YC, Lin SY, Li YC, Luan YZ, Sung WW. Crebanine, an aporphine alkaloid, induces cancer cell apoptosis through PI3K-Akt pathway in glioblastoma multiforme. Front Pharmacol 2024; 15:1419044. [PMID: 38895635 PMCID: PMC11184677 DOI: 10.3389/fphar.2024.1419044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 05/14/2024] [Indexed: 06/21/2024] Open
Abstract
Glioblastoma multiforme (GBM) is one of the most prevalent and lethal primary central nervous system malignancies. GBM is notorious for its high rates of recurrence and therapy resistance and the PI3K/Akt pathway plays a pivotal role in its malignant behavior. Crebanine (CB), an alkaloid capable of penetrating the blood-brain barrier (BBB), has been shown to have inhibitory effects on proinflammatory molecules and multiple cancer cell lines via pathways such as PI3K/Akt. This study aims to investigate the efficacy and mechanisms of CB treatment on GBM. It is the first study to elucidate the anti-tumor role of CB in GBM, providing new possibilities for GBM therapy. Through a series of experiments, we demonstrate the significant anti-survival, anti-clonogenicity, and proapoptotic effects of CB treatment on GBM cell lines. Next-generation sequencing (NGS) is also conducted and provides a complete list of significant changes in gene expression after treatment, including genes related to apoptosis, the cell cycle, FoxO, and autophagy. The subsequent protein expressions of the upregulation of apoptosis and downregulation of PI3K/Akt are further proved. The clinical applicability of CB to GBM treatment could be high for its BBB-penetrating feature, significant induction of apoptosis, and blockage of the PI3K/Akt pathway. Future research is needed using in vivo experiments and other therapeutic pathways shown in NGS for further clinical or in vivo studies.
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Affiliation(s)
- Poh-Shiow Yeh
- Department of Neurology, Chi Mei Medical Center, Tainan, Taiwan
| | - Chien-Te Liu
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Chia-Ying Yu
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Urology, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Ya-Chuan Chang
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Urology, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Shu-Yu Lin
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Yun-Chen Li
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Yu-Ze Luan
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Wen-Wei Sung
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Urology, Chung Shan Medical University Hospital, Taichung, Taiwan
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
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Huang Q, Li Y, Chen Z, Ou H, Tan Y, Lin H. Bushenhuoluo Decoction improves polycystic ovary syndrome by regulating exosomal miR-30a-5p/ SOCS3/mTOR/NLRP3 signaling-mediated autophagy and pyroptosis. J Ovarian Res 2024; 17:29. [PMID: 38302986 PMCID: PMC10832128 DOI: 10.1186/s13048-024-01355-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 01/17/2024] [Indexed: 02/03/2024] Open
Abstract
BACKGROUND Polycystic ovary syndrome (PCOS) is a frequent and complicated endocrine disease that remains a major reason for infertility. Bushenhuoluo Decotion (BSHLD) has been validated to exhibit curative effects on PCOS. This study was aimed to explore the potential mechanism underlying the therapeutic action of BSHLD. METHODS PCOS rat model was induced by dehydroepiandrosterone (DHEA). Serum hormone and cytokines levels and ovarian pathological alterations were measured to assess ovarian function. Exosomes (Exos) were identified by Transmission electron microscopy and Nanoparticle Tracking Analysis. RT-qPCR, Western blotting, immunohistochemical staining, and immunofluorescence staining were performed to detect molecule expressions. Proliferation and pyroptosis of granulosa cells (GCs) were evaluated by CCK-8 and flow cytometry, respectively. The binding relationship between miR-30a-5p and suppressor of cytokine signaling 3 (SOCS3) was verified by dual luciferase reporter and RIP assays. RESULTS BSHLD treatment improved serum hormone abnormality, insulin sensitivity, and ovarian morphologic changes of PCOS rats. Moreover, BSHLD treatment restrained the excessive autophagy and pyroptosis in ovarian tissues of PCOS rats. Moreover, BSHLD reduced the expression of miR-30a-5p in serum, serum-derived Exos, and ovarian tissues, thus inhibiting autophagy and NLRP3-mediated pyroptosis in GCs. Mechanistically, SOCS3 was proved as a target of miR-30a-5p and could activate mTOR/P70S6K pathway to repress autophagy. The inhibitory effect of miR-30a-5p deficiency on autophagy and pyroptosis of GCs was attenuated by rapamycin. CONCLUSION Collectively, BSHLD suppressed autophagy and pyroptosis to improve POCS by regulating exosomal miR-30a-5p/SOCS3/mTOR signaling.
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Affiliation(s)
- Qun Huang
- Department of Gynecology, The First Affiliated Hospital of Hunan Traditional Chinese Medical College, Zhuzhou, 412012, Hunan Province, People's Republic of China
| | - Yuanbin Li
- Department of Traditional Chinese Medicine, Hunan Traditional Chinese Medical College, No. 88 Zhihui Road, Shifeng District, Zhuzhou, 412012, Hunan Province, People's Republic of China
| | - Zhuang Chen
- Department of Traditional Chinese Medicine, Hunan Traditional Chinese Medical College, No. 88 Zhihui Road, Shifeng District, Zhuzhou, 412012, Hunan Province, People's Republic of China
| | - Huiping Ou
- Department of Traditional Chinese Medicine, Hunan Traditional Chinese Medical College, No. 88 Zhihui Road, Shifeng District, Zhuzhou, 412012, Hunan Province, People's Republic of China
| | - Yanjiao Tan
- Department of Gynecology, The First Affiliated Hospital of Hunan Traditional Chinese Medical College, Zhuzhou, 412012, Hunan Province, People's Republic of China
| | - Hui Lin
- Department of Traditional Chinese Medicine, Hunan Traditional Chinese Medical College, No. 88 Zhihui Road, Shifeng District, Zhuzhou, 412012, Hunan Province, People's Republic of China.
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