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Tang L, Ding J, Yang K, Zong Z, Wu R, Li H. New insights into the mechanisms and therapeutic strategies of chondrocyte autophagy in osteoarthritis. J Mol Med (Berl) 2024:10.1007/s00109-024-02473-1. [PMID: 39145815 DOI: 10.1007/s00109-024-02473-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 06/22/2024] [Accepted: 07/29/2024] [Indexed: 08/16/2024]
Abstract
Osteoarthritis (OA) is a chronic joint disease with an unclear cause characterized by secondary osteophytes and degenerative changes in the articular cartilage. More than 250 million people are expected to be affected by it by 2050, putting a tremendous socioeconomic strain on the entire world. OA cannot currently be treated with any effective medications that change the illness. Over time, chondrocytes undergo gradual metabolic, structural, and functional changes as a result of aging or abuse. The degenerative progression of osteoarthritis is significantly influenced by the imbalance of chondrocyte homeostasis. By continuously recycling and rebuilding macromolecules or organelles, autophagy functions as a crucial regulatory system to maintain homeostasis during an individual's growth and development. This review uses chondrocytes as its starting point and establishes a strong connection between autophagy and osteoarthritis in order to thoroughly examine the mechanisms behind chondrocyte autophagy in osteoarthritis. Biomarkers of chondrocyte autophagy will be identified, and prospective targeted medications and novel treatment approaches for slowing or preventing the course of OA will be developed based on chondrocyte senescence, autophagy, and apoptosis in OA. KEY MESSAGES: Currently, OA has not been treated with any drugs that can effectively cure it. We hope that by exploring specific targets in the course of osteoarthritis, we can promote the progress of treatment strategies. The degenerative progression of osteoarthritis is significantly influenced by the imbalance of chondrocyte balance. Through the continuous recovery and reconstruction of macromolecules or organelles, autophagy is an important regulatory system for maintaining homeostasis during individual growth and development. In this paper, the close relationship between autophagy and osteoarthritis was established with chondrocytes as the starting point, in order to further explore the mechanism of chondrocyte autophagy in osteoarthritis. The development process of osteoarthritis was studied from the perspective of chondrocytes, and the change of autophagy level had a significant impact on osteoarthritis. Chondrocyte autophagy is mainly determined by intracellular mitochondrial autophagy, so we are committed to finding relevant molecules. Through PI3K/AKT- and MAPK-related pathways, the biomarkers of chondrocyte autophagy were identified, and chondrocyte senescence, autophagy, and apoptosis based on osteoarthritis provided a constructive idea for the development of prospective targeted drugs and new therapies to slow down or prevent the progression of osteoarthritis.
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Affiliation(s)
- Lujia Tang
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Nanchang University, Nanchang, China
- The Third Clinical Medicine School, Nanchang University, Nanchang, China
| | - Jiatong Ding
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Kangping Yang
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhen Zong
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Rui Wu
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Nanchang University, Nanchang, China.
| | - Hui Li
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Nanchang University, Nanchang, China.
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2
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Snider PL, Sierra Potchanant EA, Sun Z, Edwards DM, Chan KK, Matias C, Awata J, Sheth A, Pride PM, Payne RM, Rubart M, Brault JJ, Chin MT, Nalepa G, Conway SJ. A Barth Syndrome Patient-Derived D75H Point Mutation in TAFAZZIN Drives Progressive Cardiomyopathy in Mice. Int J Mol Sci 2024; 25:8201. [PMID: 39125771 PMCID: PMC11311365 DOI: 10.3390/ijms25158201] [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: 06/28/2024] [Revised: 07/24/2024] [Accepted: 07/25/2024] [Indexed: 08/12/2024] Open
Abstract
Cardiomyopathy is the predominant defect in Barth syndrome (BTHS) and is caused by a mutation of the X-linked Tafazzin (TAZ) gene, which encodes an enzyme responsible for remodeling mitochondrial cardiolipin. Despite the known importance of mitochondrial dysfunction in BTHS, how specific TAZ mutations cause diverse BTHS heart phenotypes remains poorly understood. We generated a patient-tailored CRISPR/Cas9 knock-in mouse allele (TazPM) that phenocopies BTHS clinical traits. As TazPM males express a stable mutant protein, we assessed cardiac metabolic dysfunction and mitochondrial changes and identified temporally altered cardioprotective signaling effectors. Specifically, juvenile TazPM males exhibit mild left ventricular dilation in systole but have unaltered fatty acid/amino acid metabolism and normal adenosine triphosphate (ATP). This occurs in concert with a hyperactive p53 pathway, elevation of cardioprotective antioxidant pathways, and induced autophagy-mediated early senescence in juvenile TazPM hearts. However, adult TazPM males exhibit chronic heart failure with reduced growth and ejection fraction, cardiac fibrosis, reduced ATP, and suppressed fatty acid/amino acid metabolism. This biphasic changeover from a mild-to-severe heart phenotype coincides with p53 suppression, downregulation of cardioprotective antioxidant pathways, and the onset of terminal senescence in adult TazPM hearts. Herein, we report a BTHS genotype/phenotype correlation and reveal that absent Taz acyltransferase function is sufficient to drive progressive cardiomyopathy.
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Affiliation(s)
- Paige L. Snider
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46033, USA; (P.L.S.); (E.A.S.P.); (Z.S.); (D.M.E.); (K.-K.C.); (A.S.); (P.M.P.); (R.M.P.); (M.R.); (G.N.)
| | - Elizabeth A. Sierra Potchanant
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46033, USA; (P.L.S.); (E.A.S.P.); (Z.S.); (D.M.E.); (K.-K.C.); (A.S.); (P.M.P.); (R.M.P.); (M.R.); (G.N.)
| | - Zejin Sun
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46033, USA; (P.L.S.); (E.A.S.P.); (Z.S.); (D.M.E.); (K.-K.C.); (A.S.); (P.M.P.); (R.M.P.); (M.R.); (G.N.)
| | - Donna M. Edwards
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46033, USA; (P.L.S.); (E.A.S.P.); (Z.S.); (D.M.E.); (K.-K.C.); (A.S.); (P.M.P.); (R.M.P.); (M.R.); (G.N.)
| | - Ka-Kui Chan
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46033, USA; (P.L.S.); (E.A.S.P.); (Z.S.); (D.M.E.); (K.-K.C.); (A.S.); (P.M.P.); (R.M.P.); (M.R.); (G.N.)
| | - Catalina Matias
- Department of Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA; (C.M.); (J.J.B.)
| | - Junya Awata
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA 02111, USA; (J.A.); (M.T.C.)
| | - Aditya Sheth
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46033, USA; (P.L.S.); (E.A.S.P.); (Z.S.); (D.M.E.); (K.-K.C.); (A.S.); (P.M.P.); (R.M.P.); (M.R.); (G.N.)
| | - P. Melanie Pride
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46033, USA; (P.L.S.); (E.A.S.P.); (Z.S.); (D.M.E.); (K.-K.C.); (A.S.); (P.M.P.); (R.M.P.); (M.R.); (G.N.)
| | - R. Mark Payne
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46033, USA; (P.L.S.); (E.A.S.P.); (Z.S.); (D.M.E.); (K.-K.C.); (A.S.); (P.M.P.); (R.M.P.); (M.R.); (G.N.)
| | - Michael Rubart
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46033, USA; (P.L.S.); (E.A.S.P.); (Z.S.); (D.M.E.); (K.-K.C.); (A.S.); (P.M.P.); (R.M.P.); (M.R.); (G.N.)
| | - Jeffrey J. Brault
- Department of Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA; (C.M.); (J.J.B.)
| | - Michael T. Chin
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA 02111, USA; (J.A.); (M.T.C.)
| | - Grzegorz Nalepa
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46033, USA; (P.L.S.); (E.A.S.P.); (Z.S.); (D.M.E.); (K.-K.C.); (A.S.); (P.M.P.); (R.M.P.); (M.R.); (G.N.)
| | - Simon J. Conway
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46033, USA; (P.L.S.); (E.A.S.P.); (Z.S.); (D.M.E.); (K.-K.C.); (A.S.); (P.M.P.); (R.M.P.); (M.R.); (G.N.)
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Starich B, Yang F, Tanrioven D, Kung HC, Baek J, Nair PR, Kamat P, Macaluso N, Eoh J, Han KS, Gu L, Walston J, Sun S, Wu PH, Wirtz D, Phillip JM. Substrate stiffness modulates the emergence and magnitude of senescence phenotypes in dermal fibroblasts. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.06.579151. [PMID: 38370721 PMCID: PMC10871290 DOI: 10.1101/2024.02.06.579151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Cellular senescence is a major driver of aging and disease. Here we show that substrate stiffness modulates the emergence and magnitude of senescence phenotypes after exposure to senescence inducers. Using a primary dermal fibroblast model, we show that decreased substrate stiffness accelerates senescence-associated cell-cycle arrest and regulates the expression of conventional protein-based biomarkers of senescence. We found that the expression of these senescence biomarkers, namely p21WAF1/CIP1 and p16INK4a are mechanosensitive and are in-part regulated by myosin contractility through focal adhesion kinase (FAK)-ROCK signaling. Interestingly, at the protein level senescence-induced dermal fibroblasts on soft substrates (0.5 kPa) do not express p21WAF1/CIP1 and p16INK4a at comparable levels to induced cells on stiff substrates (4GPa). However, cells express CDKN1a, CDKN2a, and IL6 at the RNA level across both stiff and soft substrates. Moreover, when cells are transferred from soft to stiff substrates, senescent cells recover an elevated expression of p21WAF1/CIP1 and p16INK4a at levels comparable to senescence cells on stiff substrates, pointing to a mechanosensitive regulation of the senescence phenotype. Together, our results indicate that the emergent senescence phenotype depends critically on the local mechanical environments of cells and that senescent cells actively respond to changing mechanical cues.
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Zhang Y, Wang T, Song Y, Chen M, Hou B, Yao B, Ma K, Song Y, Wang S, Zhang D, Liang J, Wei C. Mechanism of Bazi Bushen capsule in delaying the senescence of mesenchymal stem cells based on network pharmacology and experimental validation. Heliyon 2024; 10:e27646. [PMID: 38509951 PMCID: PMC10950659 DOI: 10.1016/j.heliyon.2024.e27646] [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: 11/02/2023] [Revised: 03/04/2024] [Accepted: 03/05/2024] [Indexed: 03/22/2024] Open
Abstract
Ageing is becoming an increasingly serious problem; therefore, there is an urgent need to find safe and effective anti-ageing drugs. Aims To investigate the effects of Bazi Bushen capsule (BZBS) on the senescence of mesenchymal stem cells (MSCs) and explore its mechanism of action. Methods Network pharmacology was used to predict the targets of BZBS in delaying senescence in MSCs. For in vitro studies, MSCs were treated with D-gal, BZBS, and NMN, and cell viability, cell senescence, stemness-related genes, and cell cycle were studied using cell counting kit-8 (CCK-8) assay, SA-β-galactosidase (SA-β-gal) staining, Quantitative Real-Time PCR (qPCR) and flow cytometry (FCM), respectively. Alkaline phosphatase (ALP), alizarin red, and oil red staining were used to determine the osteogenic and lipid differentiation abilities of MSCs. Finally, the expression of senescence-related genes and cyclin-related factors was detected by qPCR and western blotting. Results Network pharmacological analysis suggested that BZBS delayed cell senescence by interfering in the cell cycle. Our in vitro studies suggested that BZBS could significantly increase cell viability (P < 0.01), decrease the quantity of β-galactosidase+ cells (P < 0.01), downregulate p16 and p21 (P < 0.05, P < 0.01), improve adipogenic and osteogenic differentiation, and upregulate Nanog, OCT4 and SOX2 genes (P < 0.05, P < 0.01) in senescent MSCs. Moreover, BZBS significantly reduced the proportion of senescent MSCs in the G0/G1 phase (P < 0.01) and enhanced the expression of CDK4, Cyclin D1, and E2F1 (P < 0.05, P < 0.01, respectively). Upon treatment with HY-50767A, a CDK4 inhibitor, the upregulation of E2F1 was no longer observed in the BZBS group. Conclusions BZBS can protect MSCs against D-gal-induced senescence, which may be associated with cell cycle regulation via the Cyclin D1/CDK4/E2F1 signalling pathway.
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Affiliation(s)
- Yaping Zhang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050091, China
| | - Tongxing Wang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
- High-level TCM Key Disciplines of National Administration of Traditional Chinese Medicine—Luobing Theory, Hebei Province, Shijiazhuang, 050035, China
- Key Laboratory of State Administration of TCM (Cardio-Cerebral Vessel Collateral Disease), Shijiazhuang, 050035, China
| | - Yanfei Song
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
- High-level TCM Key Disciplines of National Administration of Traditional Chinese Medicine—Luobing Theory, Hebei Province, Shijiazhuang, 050035, China
- Shijiazhuang Compound Traditional Chinese Medicine Technology Innovation Center, Shijiazhuang, 050035, China
| | - Meng Chen
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
- High-level TCM Key Disciplines of National Administration of Traditional Chinese Medicine—Luobing Theory, Hebei Province, Shijiazhuang, 050035, China
- Shijiazhuang Compound Traditional Chinese Medicine Technology Innovation Center, Shijiazhuang, 050035, China
| | - Bin Hou
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
- High-level TCM Key Disciplines of National Administration of Traditional Chinese Medicine—Luobing Theory, Hebei Province, Shijiazhuang, 050035, China
| | - Bing Yao
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
- High-level TCM Key Disciplines of National Administration of Traditional Chinese Medicine—Luobing Theory, Hebei Province, Shijiazhuang, 050035, China
- Shijiazhuang Compound Traditional Chinese Medicine Technology Innovation Center, Shijiazhuang, 050035, China
| | - Kun Ma
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
- High-level TCM Key Disciplines of National Administration of Traditional Chinese Medicine—Luobing Theory, Hebei Province, Shijiazhuang, 050035, China
- Hebei Clinical Research Center of Cardiovascular Disease of Traditional Chinese Medicine, Shijiazhuang, 050035, China
| | - Yahui Song
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
- High-level TCM Key Disciplines of National Administration of Traditional Chinese Medicine—Luobing Theory, Hebei Province, Shijiazhuang, 050035, China
| | - Siwei Wang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050091, China
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
- High-level TCM Key Disciplines of National Administration of Traditional Chinese Medicine—Luobing Theory, Hebei Province, Shijiazhuang, 050035, China
| | - Dan Zhang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050091, China
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
- High-level TCM Key Disciplines of National Administration of Traditional Chinese Medicine—Luobing Theory, Hebei Province, Shijiazhuang, 050035, China
| | - Junqing Liang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
- High-level TCM Key Disciplines of National Administration of Traditional Chinese Medicine—Luobing Theory, Hebei Province, Shijiazhuang, 050035, China
| | - Cong Wei
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, 050091, China
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
- High-level TCM Key Disciplines of National Administration of Traditional Chinese Medicine—Luobing Theory, Hebei Province, Shijiazhuang, 050035, China
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Huang H, Wang T, Wang L, Huang Y, Li W, Wang J, Hu Y, Zhou Z. Saponins of Panax japonicus ameliorates cardiac aging phenotype in aging rats by enhancing basal autophagy through AMPK/mTOR/ULK1 pathway. Exp Gerontol 2023; 182:112305. [PMID: 37797916 DOI: 10.1016/j.exger.2023.112305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 09/29/2023] [Accepted: 10/02/2023] [Indexed: 10/07/2023]
Abstract
Heart disease is a significant health concern for elderly individuals, with heart aging being the primary cause. Recent studies have shown that autophagy can play a protective role in preventing cardiac aging. Our previous research confirmed that Chikusetsu saponin IVa, a fundamental component of Saponins of Panax japonics (SPJ), can enhance basic autophagy levels in cardiomyocyte of isoproterenol induced cardiac fibrosis mice. However, it remains unclear whether SPJ possesses a protective effect on cardiac dysfunction during the natural aging process. Rats were randomly divided into four groups: adult control group (6 months old), aging group (24 months old), aging group treated with 10 mg/kg SPJ, and aging group treated with 30 mg/kg SPJ. The heart function, blood pressure, and heart mass index (HMI) were measured. Hematoxylin and eosin staining (H&E) and Wheat Germ Agglutinin (WGA) staining were used to observe the changes in morphology, while Masson staining was used to examine collagen deposition in the rat hearts and CD45 immunohistochemistry was conducted to examine the macrophage infiltration in heart tissues. TUNEL kit was used to detect apoptosis level of cardiomyocyte, and western blot was used to evaluate autophagy-related proteins as well as AMPK/mTOR/ULK1 pathway-related markers. SPJ treatment improved the cardiac function, reduced HMI, attenuated myocardial fiber disorder, inhibited inflammatory cell infiltration, and decreased collagen deposition and cardiomyocyte apoptosis in aging rats. Additionally, SPJ treatment decreased the expression of aging-related proteins and restored the expression of autophagy-related markers. SPJ activated autophagy through the activation of AMPK, which in turn increased the phosphorylation of ULK1(Ser555), while inhibited the phosphorylation of mTOR and ULK1(Ser757). Our study demonstrates that SPJ improves the cardiac function of aging rats by enhancing basal autophagy through the AMPK/mTOR/ULK1 pathway. These results offer a theoretical foundation and empirical evidence to support the clinical advancement of SPJ in enhancing age-related cardiac dysfunction.
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Affiliation(s)
- Hefei Huang
- The First College of Clinical Medical Science, China Three Gorges University, Yichang, Hubei, China; Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, Hubei, China
| | - Tianlun Wang
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, Hubei, China; College of Medicine and Health Sciences, China Three Gorges University, Yichang, Hubei, China
| | - Luopei Wang
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, Hubei, China; College of Medicine and Health Sciences, China Three Gorges University, Yichang, Hubei, China
| | - Yan Huang
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, Hubei, China; College of Medicine and Health Sciences, China Three Gorges University, Yichang, Hubei, China
| | - Weili Li
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, Hubei, China; College of Medicine and Health Sciences, China Three Gorges University, Yichang, Hubei, China
| | - Jin'e Wang
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, Hubei, China; College of Basic Medical Sciences, China Three Gorges University, Yichang, Hubei, China
| | - Yuanlang Hu
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, Hubei, China; College of Basic Medical Sciences, China Three Gorges University, Yichang, Hubei, China.
| | - Zhiyong Zhou
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, Hubei, China; College of Medicine and Health Sciences, China Three Gorges University, Yichang, Hubei, China.
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Hild V, Mellert K, Möller P, Barth TFE. Giant Cells of Various Lesions Are Characterised by Different Expression Patterns of HLA-Molecules and Molecules Involved in the Cell Cycle, Bone Metabolism, and Lineage Affiliation: An Immunohistochemical Study with a Review of the Literature. Cancers (Basel) 2023; 15:3702. [PMID: 37509363 PMCID: PMC10377796 DOI: 10.3390/cancers15143702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/30/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
Giant cells (GCs) are thought to originate from the fusion of monocytic lineage cells and arise amid multiple backgrounds. To compare GCs of different origins, we immunohistochemically characterised the GCs of reactive and neoplastic lesions (n = 47). We studied the expression of 15 molecules including HLA class II molecules those relevant to the cell cycle, bone metabolism and lineage affiliation. HLA-DR was detectable in the GCs of sarcoidosis, sarcoid-like lesions, tuberculosis, and foreign body granuloma. Cyclin D1 was expressed by the GCs of neoplastic lesions as well as the GCs of bony callus, fibroid epulis, and brown tumours. While cyclin E was detected in the GCs of all lesions, p16 and p21 showed a heterogeneous expression pattern. RANK was expressed by the GCs of all lesions except sarcoid-like lesions and xanthogranuloma. All GCs were RANK-L-negative, and the GCs of all lesions were osteoprotegerin-positive. Osteonectin was limited to the GCs of chondroblastoma. Osteopontin and TRAP were detected in the GCs of all lesions except xanthogranuloma. RUNX2 was heterogeneously expressed in the reactive and neoplastic cohort. The GCs of all lesions except foreign body granuloma expressed CD68, and all GCs were CD163- and langerin-negative. This profiling points to a functional diversity of GCs despite their similar morphology.
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Affiliation(s)
- Vivien Hild
- Institute of Pathology, University Hospital Ulm, 89081 Ulm, Germany
| | - Kevin Mellert
- Institute of Pathology, University Hospital Ulm, 89081 Ulm, Germany
| | - Peter Möller
- Institute of Pathology, University Hospital Ulm, 89081 Ulm, Germany
| | - Thomas F E Barth
- Institute of Pathology, University Hospital Ulm, 89081 Ulm, Germany
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Singh AK, Peng BY, Chien ST, Chan CH, Deng YH, Pai HY, Wei HJ, Wang MF, Wang SH, Wu CY, Deng WP. Anti-aging biomaterial sturgeon chondroitin sulfate upregulating anti-oxidant and SIRT-1/c-fos gene expression to reprogram stem cell senescence and prolong longevity. Biomater Sci 2023. [PMID: 37158091 DOI: 10.1039/d2bm01997c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Aging involves tissue and cell potential dysfunction characterized by stem cell senescence and extracellular matrix microenvironment (ECM) alteration. Chondroitin sulfate (CS), found in the ECM of normal cells and tissues, aids in maintaining tissue homeostasis. Here, CS-derived biomaterial (CSDB) from sturgeon is extracted to investigate its antiaging effect in senescence-accelerated mouse prone-8 (SAMP8) mice and elucidate the underlying mechanism of its action. Although CSDB has been widely extracted from different sources and used as a scaffold, hydrogel, or drug carrier for the treatment of various pathological diseases, CSDB has not yet been used as a biomaterial for the amelioration of senescence and aging features. In this study, the extracted sturgeon CSDB showed a low molecular weight and comprised 59% 4-sulfated CS and 23% 6-sulfated CS. In an in vitro study, sturgeon CSDB promoted cell proliferation and reduced oxidative stress to inhibit stem cell senescence. In an ex vivo study, after oral CSDB treatment of SAMP8 mice, the stem cells were extracted to analyze the p16Ink4a and p19Arf gene-related pathways, which were inhibited and then SIRT-1 gene expression was upregulated to reprogram stem cells from a senescence state for retarding aging. In an in vivo study, CSDB also restored the aging-phenotype-related bone mineral density and skin morphology to prolong longevity. Thus, sturgeon CSDB may be useful for prolonging healthy longevity as an anti-aging drug.
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Affiliation(s)
- Abhinay Kumar Singh
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan
- Stem Cell Research Center, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan.
| | - Bou-Yue Peng
- Department of Dentistry, Taipei Medical University Hospital, Taipei 110301, Taiwan
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan
| | - Shaw-Ting Chien
- Stem Cell Research Center, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan.
| | - Chun-Hao Chan
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan
- Stem Cell Research Center, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan.
| | - Yue-Hua Deng
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan
- Stem Cell Research Center, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan.
| | - Hsiao-Yu Pai
- Stem Cell Research Center, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan.
- Graduate Institute of Biomedical Materials and Tissue Engineering, Taipei Medical University, Taipei 110301, Taiwan
| | - Hong-Jian Wei
- Department of Radiation Oncology, Columbia University Irving Medical Center, 630 W. 168th Street, New York, NY, 10032, USA
| | - Ming-Fu Wang
- Department of Food and Nutrition, Providence University, Taichung 433303, Taiwan
| | - Shwu-Huey Wang
- Core Facility Center, Department of Research Development, Taipei Medical University, Taipei 11030, Taiwan
| | - Chia-Yu Wu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, Taipei Medical University Hospital, Taipei 110301, Taiwan.
| | - Win-Ping Deng
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan
- Stem Cell Research Center, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan.
- Graduate Institute of Biomedical and Pharmaceutical Science, Fu Jen Catholic University, Taipei 242062, Taiwan
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Friedman B, Larranaga-Vera A, Castro CM, Corciulo C, Rabbani P, Cronstein BN. Adenosine A2A receptor activation reduces chondrocyte senescence. FASEB J 2023; 37:e22838. [PMID: 36884388 DOI: 10.1096/fj.202201212rr] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 01/20/2023] [Accepted: 02/13/2023] [Indexed: 03/09/2023]
Abstract
Osteoarthritis (OA) pathogenesis is associated with reduced chondrocyte homeostasis and increased levels of cartilage cellular senescence. Chondrosenescence is the development of cartilage senescence that increases with aging joints and disrupts chondrocyte homeostasis and is associated with OA. Adenosine A2A receptor (A2AR) activation in cartilage via intra-articular injection of liposomal A2AR agonist, liposomal-CGS21680, leads to cartilage regeneration in vivo and chondrocyte homeostasis. A2AR knockout mice develop early OA isolated chondrocytes demonstrate upregulated expression of cellular senescence and aging-associated genes. Based on these observations, we hypothesized that A2AR activation would ameliorate cartilage senescence. We found that A2AR stimulation of chondrocytes reduced beta-galactosidase staining and regulated levels and cell localization of common senescence mediators p21 and p16 in vitro in the human TC28a2 chondrocyte cell line. In vivo analysis similarly showed A2AR activation reduced nuclear p21 and p16 in obesity-induced OA mice injected with liposomal-CGS21680 and increased nuclear p21 and p16 in A2AR knockout mouse chondrocytes compared to wild-type mice. A2AR agonism also increased activity of the chondrocyte Sirt1/AMPK energy-sensing pathway by enhancing nuclear Sirt1 localization and upregulating T172-phosphorylated (active) AMPK protein levels. Lastly, A2AR activation in TC28a2 and primary human chondrocytes reduced wild-type p53 and concomitantly increased p53 alternative splicing leading to increase in an anti-senescent p53 variant, Δ133p53α. The results reported here indicate that A2AR signaling promotes chondrocyte homeostasis in vitro and reduces OA cartilage development in vivo by reducing chondrocyte senescence.
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Affiliation(s)
- Benjamin Friedman
- Division of Rheumatology, New York University Grossman School of Medicine, New York, New York, USA.,Division of Translational Medicine, New York University Grossman School of Medicine, New York, New York, USA
| | - Ane Larranaga-Vera
- Division of Translational Medicine, New York University Grossman School of Medicine, New York, New York, USA
| | - Cristina M Castro
- Division of Translational Medicine, New York University Grossman School of Medicine, New York, New York, USA
| | - Carmen Corciulo
- Division of Translational Medicine, New York University Grossman School of Medicine, New York, New York, USA
| | - Piul Rabbani
- Division of Rheumatology, New York University Grossman School of Medicine, New York, New York, USA.,Hansjorg Wyss Department of Plastic Surgery, New York University Grossman School of Medicine, New York, New York, USA
| | - Bruce N Cronstein
- Division of Rheumatology, New York University Grossman School of Medicine, New York, New York, USA.,Division of Translational Medicine, New York University Grossman School of Medicine, New York, New York, USA
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9
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Kin R, Hoshi D, Fujita H, Kosaka T, Takamura H, Kiyokawa E. Prognostic significance of p16, p21, and Ki67 expression at the invasive front of colorectal cancers. Pathol Int 2023; 73:81-90. [PMID: 36484761 DOI: 10.1111/pin.13295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 11/21/2022] [Indexed: 12/13/2022]
Abstract
Cancer cells at the invasive front are believed to be responsible for invasion/metastasis. This has led to examining various morphological features and protein expressions at the invasive front. However, accurate assessment of the pathological section requires long-time training, and inter-observer disagreement is problematic. Immunohistochemistry and digital imaging analysis may mitigate these problems; however, the choice of which proteins to stain and the best analysis method remains controversial. We used the "go-or-grow" hypothesis to select markers with the greatest prognostic relevance. Importantly, nonproliferating cells can migrate. We used Ki67 as a proliferation marker, with p16 and p21 designating nonproliferating cells. We established a semi-automated quantification workflow to study protein expression in serial pathological sections. A total of 51 patients with completely resected colorectal cancer (stages I-IV) were analyzed, and 44 patients were followed up. Patients with cancer cells with p16-high/p21-low or p21-low/Ki67-low at the deepest invasive front demonstrated a significantly worse prognosis than those who did not display these characteristics. These results suggest that the nonproliferating cancer cells at the invasion front possess invasion/metastatic property with heterogeneity of senescence.
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Affiliation(s)
- Ryosuke Kin
- Department of Surgery, Kanazawa Medical University, Ishikawa, Japan
| | - Daisuke Hoshi
- Department of Oncologic Pathology, Kanazawa Medical University, Ishikawa, Japan
| | - Hideto Fujita
- Department of Surgery, Kanazawa Medical University, Ishikawa, Japan
| | - Takeo Kosaka
- Department of Surgery, Kanazawa Medical University, Ishikawa, Japan.,Department of Surgery, Houju Memorial Hospital, Ishikawa, Japan
| | | | - Etsuko Kiyokawa
- Department of Oncologic Pathology, Kanazawa Medical University, Ishikawa, Japan
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10
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Moon SH, Kwon Y, Huh YE, Choi HJ. Trehalose ameliorates prodromal non-motor deficits and aberrant protein accumulation in a rotenone-induced mouse model of Parkinson's disease. Arch Pharm Res 2022; 45:417-432. [PMID: 35618982 DOI: 10.1007/s12272-022-01386-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 05/18/2022] [Indexed: 02/03/2023]
Abstract
Trehalose has been recently revealed as an attractive candidate to prevent and modify Parkinson's disease (PD) progression by regulating autophagy; however, studies have only focused on the reduction of motor symptoms rather than the modulation of disease course from prodromal stage. This study aimed to evaluate whether trehalose has a disease-modifying effect at the prodromal stage before the onset of a motor deficit in 8-week-old male C57BL/6 mice exposed to rotenone. We found significant decrease in tyrosine hydroxylase immunoreactivity in the substantia nigra and motor dysfunction after 2 weeks rotenone treatment. Mice exposed to rotenone for a week showed an accumulation of protein aggregates in the brain and prodromal non-motor deficits, such as depression and olfactory dysfunction, prior to motor deficits. Trehalose significantly improved olfactory dysfunction and depressive-like behaviors and markedly reduced α-synuclein and p62 deposition in the brain. Trehalose further ameliorated motor impairment and loss of nigral tyrosine hydroxylase-positive cells in rotenone-treated mice. We demonstrated that prodromal non-motor signs in a rotenone-induced PD mouse model are associated with protein aggregate accumulation in the brain and that an autophagy inducer could be valuable to prevent PD progression from prodromal stage by regulating abnormal protein accumulation.
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Affiliation(s)
- Soung Hee Moon
- College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Pocheon, Gyeonggi-do, 11160, Republic of Korea
| | - Yoonjung Kwon
- College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Pocheon, Gyeonggi-do, 11160, Republic of Korea
| | - Young Eun Huh
- Department of Neurology, CHA Bundang Medical Center, CHA University, Seongnam, Gyeonggi-do, 13488, Republic of Korea.
| | - Hyun Jin Choi
- College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Pocheon, Gyeonggi-do, 11160, Republic of Korea.
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11
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Bordoni M, Pansarasa O, Scarian E, Cristofani R, Leone R, Fantini V, Garofalo M, Diamanti L, Bernuzzi S, Gagliardi S, Carelli S, Poletti A, Cereda C. Lysosomes Dysfunction Causes Mitophagy Impairment in PBMCs of Sporadic ALS Patients. Cells 2022; 11:cells11081272. [PMID: 35455952 PMCID: PMC9030813 DOI: 10.3390/cells11081272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/06/2022] [Accepted: 04/07/2022] [Indexed: 02/06/2023] Open
Abstract
Mitochondria alterations are present in tissues derived from patients and animal models, but no data are available for peripheral blood mononuclear cells (PBMCs) of ALS patients. This work aims to investigate mitophagy in PBMCs of sporadic (sALS) patients and how this pathway can be tuned by using small molecules. We found the presence of morphologically atypical mitochondria by TEM and morphological abnormalities by MitoTracker™. We found a decreased number of healthy mitochondria in sALS PBMCs and an impairment of mitophagy with western blot and immunofluorescence. After rapamycin treatment, we found a higher increase in the LC3 marker in sALS PBMCs, while after NH4Cl treatment, we found a lower increase in the LC3 marker. Finally, mTOR-independent autophagy induction with trehalose resulted in a significant decrease in the lysosomes level sALS PBMCs. Our data suggest that the presence of morphologically altered mitochondria and an inefficient turnover of damaged mitochondria in PBMCs of sALS patients rely on the impairment of the mitophagy pathway. We also found that the induction of the mTOR-independent autophagy pathway leads to a decrease in lysosomes level, suggesting a more sensitivity of sALS PBMCs to trehalose. Such evidence suggests that trehalose could represent an effective treatment for ALS patients.
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Affiliation(s)
- Matteo Bordoni
- Genomic and Post-Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy; (M.B.); (E.S.); (M.G.); (S.G.); (C.C.)
| | - Orietta Pansarasa
- Genomic and Post-Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy; (M.B.); (E.S.); (M.G.); (S.G.); (C.C.)
- Correspondence: ; Tel.: +0382-380-248
| | - Eveljn Scarian
- Genomic and Post-Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy; (M.B.); (E.S.); (M.G.); (S.G.); (C.C.)
- Department of Brain and Behavioral Sciences, University of Pavia, 27100 Pavia, Italy
| | - Riccardo Cristofani
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Dipartimento di Eccellenza 2018-2022, Università Degli Studi di Milano, 20133 Milano, Italy; (R.C.); (A.P.)
| | | | - Valentina Fantini
- Laboratory of Neurobiology and Neurogenetic, Golgi-Cenci Foundation, 20081 Abbiategrasso, Italy;
| | - Maria Garofalo
- Genomic and Post-Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy; (M.B.); (E.S.); (M.G.); (S.G.); (C.C.)
| | - Luca Diamanti
- Neuroncology Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy;
| | - Stefano Bernuzzi
- Immunohematological and Transfusional Service and Centre of Transplantation Immunology, IRCCS “San Matteo Foundation”, 27100 Pavia, Italy;
| | - Stella Gagliardi
- Genomic and Post-Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy; (M.B.); (E.S.); (M.G.); (S.G.); (C.C.)
| | - Stephana Carelli
- Department of Biomedical and Clinical Sciences “L. Sacco”, University of Milan, 20157 Milan, Italy;
- Pediatric Clinical Research Centre Fondazione “Romeo ed Enrica Invernizzi”, University of Milano, 20157 Milan, Italy
| | - Angelo Poletti
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Dipartimento di Eccellenza 2018-2022, Università Degli Studi di Milano, 20133 Milano, Italy; (R.C.); (A.P.)
| | - Cristina Cereda
- Genomic and Post-Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy; (M.B.); (E.S.); (M.G.); (S.G.); (C.C.)
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12
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Wang B, Ntim M, Xia M, Wang Y, Lu JC, Yang JY, Li S. Long-Term Social Isolation-Induced Autophagy Inhibition and Cell Senescence Aggravate Cognitive Impairment in D(+)Galactose-Treated Male Mice. Front Aging Neurosci 2022; 14:777700. [PMID: 35401146 PMCID: PMC8988191 DOI: 10.3389/fnagi.2022.777700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 02/14/2022] [Indexed: 11/13/2022] Open
Abstract
Aging is associated with physiological and pathological changes and presents health complications, such as dementia. Isolation has also been associated with the experience of growing old. Both have been linked individually to the incidence of cognitive decline. In this present study, the effects of these two phenomena have been looked at in animal models where aging was induced with D(+)Galactose in mice who underwent long-term post-weaned social isolation (L-PWSI). Assessing cognitive function using Y-maze, Morris water maze (MWM), and passive avoidance tests (PATs) confirmed that cognition is impaired in either of the treatments but worsened when the D(+)Galactose mice were subjected to L-PWSI. Moreover, a synaptic protein, PSD95, and dendritic spines density were significantly reduced in the L-PWSI and D(+)Galactose-treated mice. Our previous study revealed that autophagy deficit is involved in cognitive impairment in the L-PWSI model. Here, we first report the inhibited cell cycle in L-PWSI, combined with the decreased autophagy, aggravates cognitive impairment in D(+)Galactose-treated mice. Beyond these, the autophagy and cell cycle mechanisms that link isolation and aging have been explored. The close association between isolation and aging in humans is very real and needs much research attention going forward for possible therapeutic interventions.
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Affiliation(s)
- Bin Wang
- Department of Physiology, College of Basic Medical Sciences, Liaoning Provincial Key Laboratory of Cerebral Diseases, National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, China
| | - Michael Ntim
- Department of Physiology, College of Basic Medical Sciences, Liaoning Provincial Key Laboratory of Cerebral Diseases, National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, China
- Department of Physiology, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Min Xia
- Department of Physiology, College of Basic Medical Sciences, Liaoning Provincial Key Laboratory of Cerebral Diseases, National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, China
| | - Ying Wang
- Department of Physiology, College of Basic Medical Sciences, Liaoning Provincial Key Laboratory of Cerebral Diseases, National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, China
- Department of Cardiology, Institute of Heart and Vessel Diseases of Dalian Medical University, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jin-cheng Lu
- Department of Physiology, College of Basic Medical Sciences, Liaoning Provincial Key Laboratory of Cerebral Diseases, National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, China
| | - Jin-Yi Yang
- Department of Urology, Affiliated Dalian Friendship Hospital of Dalian Medical University, Dalian, China
- *Correspondence: Jin-Yi Yang,
| | - Shao Li
- Department of Physiology, College of Basic Medical Sciences, Liaoning Provincial Key Laboratory of Cerebral Diseases, National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, China
- Shao Li,
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13
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Fan X, Huang T, Tong Y, Fan Z, Yang Z, Yang D, Mao X, Yang M. p62 works as a hub modulation in the ageing process. Ageing Res Rev 2022; 73:101538. [PMID: 34890823 DOI: 10.1016/j.arr.2021.101538] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/22/2021] [Accepted: 12/03/2021] [Indexed: 12/15/2022]
Abstract
p62 (also known as SQSTM1) is widely used as a predictor of autophagic flux, a process that allows the degradation of harmful and unnecessary components through lysosomes to maintain protein homeostasis in cells. p62 is also a stress-induced scaffold protein that resists oxidative stress. The multiple domains in its structure allow it to be connected with a variety of vital signalling pathways, autophagy and the ubiquitin proteasome system (UPS), allowing p62 to play important roles in cell proliferation, apoptosis and survival. Recent studies have shown that p62 is also directly or indirectly involved in the ageing process. In this review, we summarize in detail the process by which p62 regulates ageing from multiple ageing-related signs with the aim of providing new insight for the study of p62 in ageing.
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Affiliation(s)
- Xiaolan Fan
- Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, PR China
| | - Tiantian Huang
- Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Yingdong Tong
- Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Ziqiang Fan
- Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Ziyue Yang
- Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Deying Yang
- Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, PR China
| | - Xueping Mao
- Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, PR China
| | - Mingyao Yang
- Institute of Animal Genetics and Breeding, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, PR China.
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14
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Ziegler DV, Huber K, Fajas L. The Intricate Interplay between Cell Cycle Regulators and Autophagy in Cancer. Cancers (Basel) 2021; 14:cancers14010153. [PMID: 35008317 PMCID: PMC8750274 DOI: 10.3390/cancers14010153] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 01/07/2023] Open
Abstract
Simple Summary Autophagy is an intracellular catabolic program regulated by multiple external and internal cues. A large amount of evidence unraveled that cell-cycle regulators are crucial in its control. This review highlights the interplay between cell-cycle regulators, including cyclin-dependent kinase inhibitors, cyclin-dependent kinases, and E2F factors, in the control of autophagy all along the cell cycle. Beyond the intimate link between cell cycle and autophagy, this review opens therapeutic perspectives in modulating together these two aspects to block cancer progression. Abstract In the past decade, cell cycle regulators have extended their canonical role in cell cycle progression to the regulation of various cellular processes, including cellular metabolism. The regulation of metabolism is intimately connected with the function of autophagy, a catabolic process that promotes the efficient recycling of endogenous components from both extrinsic stress, e.g., nutrient deprivation, and intrinsic sub-lethal damage. Mediating cellular homeostasis and cytoprotection, autophagy is found to be dysregulated in numerous pathophysiological contexts, such as cancer. As an adaptative advantage, the upregulation of autophagy allows tumor cells to integrate stress signals, escaping multiple cell death mechanisms. Nevertheless, the precise role of autophagy during tumor development and progression remains highly context-dependent. Recently, multiple articles has suggested the importance of various cell cycle regulators in the modulation of autophagic processes. Here, we review the current clues indicating that cell-cycle regulators, including cyclin-dependent kinase inhibitors (CKIs), cyclin-dependent kinases (CDKs), and E2F transcription factors, are intrinsically linked to the regulation of autophagy. As an increasing number of studies highlight the importance of autophagy in cancer progression, we finally evoke new perspectives in therapeutic avenues that may include both cell cycle inhibitors and autophagy modulators to synergize antitumor efficacy.
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15
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Lin YY, Wang YC, Yeh DW, Hung CY, Yeh YC, Ho HL, Mon HC, Chen MY, Wu YC, Chou TY. Gene Expression Profile in Primary Tumor Is Associated with Brain-Tropism of Metastasis from Lung Adenocarcinoma. Int J Mol Sci 2021; 22:ijms222413374. [PMID: 34948172 PMCID: PMC8703941 DOI: 10.3390/ijms222413374] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/04/2021] [Accepted: 12/10/2021] [Indexed: 11/16/2022] Open
Abstract
Lung adenocarcinoma has a strong propensity to metastasize to the brain. The brain metastases are difficult to treat and can cause significant morbidity and mortality. Identifying patients with increased risk of developing brain metastasis can assist medical decision-making, facilitating a closer surveillance or justifying a preventive treatment. We analyzed 27 lung adenocarcinoma patients who received a primary lung tumor resection and developed metastases within 5 years after the surgery. Among these patients, 16 developed brain metastases and 11 developed non-brain metastases only. We performed targeted DNA sequencing, RNA sequencing and immunohistochemistry to characterize the difference between the primary tumors. We also compared our findings to the published data of brain-tropic and non-brain-tropic lung adenocarcinoma cell lines. The results demonstrated that the targeted tumor DNA sequencing did not reveal a significant difference between the groups, but the RNA sequencing identified 390 differentially expressed genes. A gene expression signature including CDKN2A could identify 100% of brain-metastasizing tumors with a 91% specificity. However, when compared to the differentially expressed genes between brain-tropic and non-brain-tropic lung cancer cell lines, a different set of genes was shared between the patient data and the cell line data, which include many genes implicated in the cancer-glia/neuron interaction. Our findings indicate that it is possible to identify lung adenocarcinoma patients at the highest risk for brain metastasis by analyzing the primary tumor. Further investigation is required to elucidate the mechanism behind these associations and to identify potential treatment targets.
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Affiliation(s)
- Yen-Yu Lin
- Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei 112201, Taiwan; (Y.-Y.L.); (Y.-C.Y.); (H.-L.H.); (H.-C.M.)
- Cancer Progression Research Center, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Yu-Chao Wang
- Institute of Biomedical Informatics, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan; (Y.-C.W.); (D.-W.Y.); (C.-Y.H.)
| | - Da-Wei Yeh
- Institute of Biomedical Informatics, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan; (Y.-C.W.); (D.-W.Y.); (C.-Y.H.)
| | - Chen-Yu Hung
- Institute of Biomedical Informatics, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan; (Y.-C.W.); (D.-W.Y.); (C.-Y.H.)
| | - Yi-Chen Yeh
- Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei 112201, Taiwan; (Y.-Y.L.); (Y.-C.Y.); (H.-L.H.); (H.-C.M.)
- Institute of Biomedical Informatics, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan; (Y.-C.W.); (D.-W.Y.); (C.-Y.H.)
| | - Hsiang-Ling Ho
- Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei 112201, Taiwan; (Y.-Y.L.); (Y.-C.Y.); (H.-L.H.); (H.-C.M.)
- Department of Biotechnology and Laboratory Science in Medicine, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Hsiang-Chen Mon
- Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei 112201, Taiwan; (Y.-Y.L.); (Y.-C.Y.); (H.-L.H.); (H.-C.M.)
| | - Mei-Yu Chen
- Institute of Biochemistry and Molecular Biology, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan;
| | - Yu-Chung Wu
- Department of Thoracic Surgery, Taipei Medical University Hospital, Taipei 110301, Taiwan;
| | - Teh-Ying Chou
- Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei 112201, Taiwan; (Y.-Y.L.); (Y.-C.Y.); (H.-L.H.); (H.-C.M.)
- Cancer Progression Research Center, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
- Department of Biotechnology and Laboratory Science in Medicine, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
- Correspondence:
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16
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Hao H, Bai Y, Liu Y, Liang J, Guo S. Protective mechanism of FoxO1 against early brain injury after subarachnoid hemorrhage by regulating autophagy. Brain Behav 2021; 11:e2376. [PMID: 34661985 PMCID: PMC8613423 DOI: 10.1002/brb3.2376] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 09/02/2021] [Accepted: 09/13/2021] [Indexed: 11/11/2022] Open
Abstract
INTRODUCTION Early brain injury (EBI) plays a key role in the devastating outcomes after subarachnoid hemorrhage (SAH). Autophagy and apoptosis may share a common molecular inducer that regulates the process of cell death. FoxO1, as a key regulator of neuronal autophagy which is involved in apoptosis, has not been reported in SAH rats. This work was to investigate the protective and anti-inflammatory effects of FoxO1 on EBI after SAH by regulating autophagy. METHODS In this study, we constructed the SAH model. In experiment I, low dose (50 μl of 1 × 108 IU/ml) or high dose (50 μl of 1 × 1010 IU/ml) of FoxO1 gene overexpressed adenovirus vector was injected into the lateral ventricle of rats before SAH. In experiment II, we reported the effect of FoxO1 overexpress on nerve function recovery, oedema, BBB leakage, neuronal death in rats after SAH through autophagy regulation. Post-SAH evaluation included neurological function score, brain water content, evans blue exosmosis, pathological changes, inflammatory response and apoptosis. RESULTS The experiment I showed that either low or high dose of ad-FoxO1 could significantly improve nerve function, reduce cerebral water content and reduce blood-brain barrier (BBB) destruction in rats, indicating that ad-FoxO1 had a protective effect on brain injury in rats EBI after SAH. In addition, ad-FoxO1 promoted autophagy in rat hippocampal tissue, as evidenced by accumulation of LC3II/I and Beclin-1 and degradation of p62. Furthermore, ad-FoxO1 inhibited the inflammatory response and apoptosis of rat hippocampal neurons after SAH. The experiment II showed that both ad-FoxO1 and rapamycin attenuated the injury of nerve function in rats after SAH, and this synergistic effect further reduced cerebral edema and evansblue extravasation, decreased hippocampus neuronal cell apoptosis, and declined inflammatory response. However, this was contrary to the results of chloroquine. These findings suggested that FoxO1 regulated the neural function of EBI after SAH through the autophagy pathway. CONCLUSIONS The findings in this study was beneficial for identifying the novel therapeutic target for the treatment of SAH.
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Affiliation(s)
- Haitao Hao
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P. R. China.,Henan Key Laboratory of Neurorestoratology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan, P. R. China
| | - Yahui Bai
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P. R. China
| | - Yu Liu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P. R. China
| | - Junxin Liang
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P. R. China
| | - Shichao Guo
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P. R. China
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17
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Luo C, Zhou X, Wang L, Zeng Q, Fan J, He S, Zhang H, Wei A. Screening and identification of NOTCH1, CDKN2A, and NOS3 as differentially expressed autophagy-related genes in erectile dysfunction. PeerJ 2021; 9:e11986. [PMID: 34447638 PMCID: PMC8366525 DOI: 10.7717/peerj.11986] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/26/2021] [Indexed: 12/19/2022] Open
Abstract
Background Loss of function of key autophagy genes are associated with a variety of diseases. However specific role of autophagy-related genes in erectile dysfunction ED remains unclear. This study explores the autophagy-related differentially expressed genes (ARGs) profiles and related molecular mechanisms in Corpus Cavernosum endothelial dysfunction, which is a leading cause of ED. Methods The Gene Expression Omnibus (GEO) database was used to identify the key genes and pathways. Differentially expressed genes (DEGs) were mined using the limma package in R language. Next, ARGs were obtained by matching DEGs and autophagy-related genes from GeneCard using Venn diagrams. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses of ARGs were described using clusterProfiler and org.Hs.eg.db in R. Moreover, hub ARGs were screened out through protein-protein interaction (PPI), gene-microRNAs, and gene-transcription factors (TFs) networks then visualized using Cytoscape. Of note, the rat model of diabetic ED was established to validate some hub ARGs with qRT-PCR and Western blots. Results Twenty ARGs were identified from four ED samples and eight non-ED samples. GO analysis revealed that molecular functions (MF) of upregulated ARGs were mainly enriched in nuclear receptor activity. Also, MF of downregulated ARGs were mainly enriched in oxidoreductase activity, acting on NAD(P)H and heme proteins as acceptors. Moreover, six hub ARGs were identified by setting high degrees in the network. Additionally, hsa-mir-24-3p and hsa-mir-335-5p might play a central role in several ARGs regulation, and the transcription factors-hub genes network was centered with 13 ARGs. The experimental results further showed that the expression of Notch1, NOS3, and CDKN2A in the diabetic ED group was downregulated compared to the control. Conclusions Our study deepens the autophagy-related mechanistic understanding of endothelial dysfunction of ED. NOTCH1, CDKN2A, and NOS3 are involved in the regulation of endothelial dysfunction and may be potential therapeutic targets for ED by modulating autophagy.
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Affiliation(s)
- Chao Luo
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xiongcai Zhou
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.,Department of Urology, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Li Wang
- School of Basic Medical Science, Southern Medical University, Guangzhou, Guangdong, China
| | - Qinyu Zeng
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Junhong Fan
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Shuhua He
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Haibo Zhang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Anyang Wei
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
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18
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Russo M, Bono E, Ghigo A. The Interplay Between Autophagy and Senescence in Anthracycline Cardiotoxicity. Curr Heart Fail Rep 2021; 18:180-190. [PMID: 34081265 PMCID: PMC8342382 DOI: 10.1007/s11897-021-00519-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/19/2021] [Indexed: 02/06/2023]
Abstract
PURPOSE OF REVIEW Doxorubicin (DOXO) is a highly effective chemotherapeutic drug employed for the treatment of a wide spectrum of cancers, spanning from solid tumours to haematopoietic malignancies. However, its clinical use is hampered by severe and dose-dependent cardiac side effects that ultimately lead to heart failure (HF). RECENT FINDINGS Mitochondrial dysfunction and oxidative stress are well-established mechanisms of DOXO-induced cardiotoxicity, although recent evidence suggests that deregulation of other biological processes, like autophagy, could be involved. It is increasingly recognized that autophagy deregulation is intimately interconnected with the initiation of detrimental cellular responses, including autosis and senescence, raising the possibility of using autophagy modulators as well as senolytics and senomorphics for preventing DOXO cardiotoxicity. This review aims at providing an overview of the signalling pathways that are common to autophagy and senescence, with a special focus on how the relationship between these two processes is deregulated in response to cardiotoxic treatments. Finally, we will discuss the potential therapeutic utility of drugs modulating autophagy and/or senescence for counteracting DOXO cardiotoxicity.
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Affiliation(s)
- Michele Russo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Enrico Bono
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Alessandra Ghigo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Via Nizza 52, 10126, Torino, Italy.
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19
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Wen J, Bao M, Tang M, He X, Yao X, Li L. Low magnitude vibration alleviates age-related bone loss by inhibiting cell senescence of osteogenic cells in naturally senescent rats. Aging (Albany NY) 2021; 13:12031-12045. [PMID: 33888646 PMCID: PMC8109117 DOI: 10.18632/aging.202907] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 02/18/2021] [Indexed: 04/14/2023]
Abstract
Dysfunction of bone marrow mesenchymal stem cells (BMSCs), osteoblasts and osteocytes may be one of the main causes of bone loss in the elderly. In the present study, we found osteogenic cells from aged rats all exhibited senescence changes, with the most pronounced senescence changes in osteocytes. Meanwhile, the proliferative capacity and functional activity of osteogenic cells from aged rats were suppressed. Osteogenic differentiation capacity of BMSCs from aged rats decreased while adipogenic capacity increased. The mineralization capacity, ALP activity and osteogenic proteins expression of osteoblasts from aged rats decreased. Additionally, osteocytes from aged rats up-expressed sclerosteosis protein, a negative regulator of bone formation. To inhibit osteogenic cell senescence, we use low magnitude vibration (LMV) to eliminate the senescent osteogenic cells. After LMV treatment, the number of osteogenic cells staining positively for senescence-associated-β-galactosidase (SA-β-Gal) decreased significantly. Besides, the expression of anti-aging protein SIRT1 was upregulated significantly, while p53 and p21 were downregulated significantly after LMV treatment. Thus, the LMV can inhibit the senescence of osteogenic cells partly through the Sirt1/p53/p21 axis. Furthermore, LMV was found to promote bone formation of aged rats. These results suggest that the inhibition of osteogenic cell senescence by LMV is a valuable treatment to prevent or delay osteoporosis.
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Affiliation(s)
- Jirui Wen
- Institute of Biomedical Engineering, West China School of Basic Medical Science and Forensic Medicine, Sichuan University, Chengdu 610041, Sichuan, China
| | - Mingyue Bao
- Institute of Biomedical Engineering, West China School of Basic Medical Science and Forensic Medicine, Sichuan University, Chengdu 610041, Sichuan, China
| | - Min Tang
- Institute of Biomedical Engineering, West China School of Basic Medical Science and Forensic Medicine, Sichuan University, Chengdu 610041, Sichuan, China
| | - Xueling He
- Laboratory Animal Center, Sichuan University, Chengdu 610041, Sichuan, China
| | - Xinghong Yao
- Institute of Biomedical Engineering, West China School of Basic Medical Science and Forensic Medicine, Sichuan University, Chengdu 610041, Sichuan, China
| | - Liang Li
- Institute of Biomedical Engineering, West China School of Basic Medical Science and Forensic Medicine, Sichuan University, Chengdu 610041, Sichuan, China
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20
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Coryell PR, Diekman BO, Loeser RF. Mechanisms and therapeutic implications of cellular senescence in osteoarthritis. Nat Rev Rheumatol 2021; 17:47-57. [PMID: 33208917 PMCID: PMC8035495 DOI: 10.1038/s41584-020-00533-7] [Citation(s) in RCA: 296] [Impact Index Per Article: 98.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/16/2020] [Indexed: 12/13/2022]
Abstract
The development of osteoarthritis (OA) correlates with a rise in the number of senescent cells in joint tissues, and the senescence-associated secretory phenotype (SASP) has been implicated in cartilage degradation and OA. Age-related mitochondrial dysfunction and associated oxidative stress might induce senescence in joint tissue cells. However, senescence is not the only driver of OA, and the mechanisms by which senescent cells contribute to disease progression are not fully understood. Furthermore, it remains uncertain which joint cells and SASP-factors contribute to the OA phenotype. Research in the field has looked at developing therapeutics (namely senolytics and senomorphics) that eliminate or alter senescent cells to stop disease progression and pathogenesis. A better understanding of how senescence contributes to joint dysfunction may enhance the effectiveness of these approaches and provide relief for patients with OA.
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Affiliation(s)
- Philip R Coryell
- Division of Rheumatology, Allergy, and Immunology, Thurston Arthritis Research Center, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Brian O Diekman
- Division of Rheumatology, Allergy, and Immunology, Thurston Arthritis Research Center, University of North Carolina School of Medicine, Chapel Hill, NC, USA
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC, USA
| | - Richard F Loeser
- Division of Rheumatology, Allergy, and Immunology, Thurston Arthritis Research Center, University of North Carolina School of Medicine, Chapel Hill, NC, USA.
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21
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Deleye Y, Cotte AK, Hannou SA, Hennuyer N, Bernard L, Derudas B, Caron S, Legry V, Vallez E, Dorchies E, Martin N, Lancel S, Annicotte JS, Bantubungi K, Pourtier A, Raverdy V, Pattou F, Lefebvre P, Abbadie C, Staels B, Haas JT, Paumelle R. CDKN2A/p16INK4a suppresses hepatic fatty acid oxidation through the AMPKα2-SIRT1-PPARα signaling pathway. J Biol Chem 2020; 295:17310-17322. [PMID: 33037071 DOI: 10.1074/jbc.ra120.012543] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 09/22/2020] [Indexed: 12/22/2022] Open
Abstract
In addition to their well-known role in the control of cellular proliferation and cancer, cell cycle regulators are increasingly identified as important metabolic modulators. Several GWAS have identified SNPs near CDKN2A, the locus encoding for p16INK4a (p16), associated with elevated risk for cardiovascular diseases and type-2 diabetes development, two pathologies associated with impaired hepatic lipid metabolism. Although p16 was recently shown to control hepatic glucose homeostasis, it is unknown whether p16 also controls hepatic lipid metabolism. Using a combination of in vivo and in vitro approaches, we found that p16 modulates fasting-induced hepatic fatty acid oxidation (FAO) and lipid droplet accumulation. In primary hepatocytes, p16-deficiency was associated with elevated expression of genes involved in fatty acid catabolism. These transcriptional changes led to increased FAO and were associated with enhanced activation of PPARα through a mechanism requiring the catalytic AMPKα2 subunit and SIRT1, two known activators of PPARα. By contrast, p16 overexpression was associated with triglyceride accumulation and increased lipid droplet numbers in vitro, and decreased ketogenesis and hepatic mitochondrial activity in vivo Finally, gene expression analysis of liver samples from obese patients revealed a negative correlation between CDKN2A expression and PPARA and its target genes. Our findings demonstrate that p16 represses hepatic lipid catabolism during fasting and may thus participate in the preservation of metabolic flexibility.
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Affiliation(s)
- Yann Deleye
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | - Alexia Karen Cotte
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | - Sarah Anissa Hannou
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | - Nathalie Hennuyer
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | - Lucie Bernard
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | - Bruno Derudas
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | - Sandrine Caron
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | - Vanessa Legry
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | - Emmanuelle Vallez
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | - Emilie Dorchies
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | - Nathalie Martin
- Univ. Lille, CNRSInstitut Pasteur de Lille, UMR 8161-M3T-Mechanisms of Tumorigenesis and Target Therapies, Lille, France
| | - Steve Lancel
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | | | - Kadiombo Bantubungi
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | - Albin Pourtier
- Univ. Lille, CNRSInstitut Pasteur de Lille, UMR 8161-M3T-Mechanisms of Tumorigenesis and Target Therapies, Lille, France
| | - Violeta Raverdy
- Univ. Lille, Inserm, CHU Lille, UMR 1190-EGID, Lille, France
| | - François Pattou
- Univ. Lille, Inserm, CHU Lille, UMR 1190-EGID, Lille, France
| | - Philippe Lefebvre
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | - Corinne Abbadie
- Univ. Lille, CNRSInstitut Pasteur de Lille, UMR 8161-M3T-Mechanisms of Tumorigenesis and Target Therapies, Lille, France
| | - Bart Staels
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | - Joel T Haas
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France
| | - Réjane Paumelle
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, Lille, France.
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22
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Coryell PR, Goraya SK, Griffin KA, Redick MA, Sisk SR, Purvis JE. Autophagy regulates the localization and degradation of p16 INK4a. Aging Cell 2020; 19:e13171. [PMID: 32662244 PMCID: PMC7370706 DOI: 10.1111/acel.13171] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/24/2020] [Accepted: 03/29/2020] [Indexed: 12/23/2022] Open
Abstract
The tumor suppressor protein p16INK4a (p16) is a well‐established hallmark of aging that induces cellular senescence in response to stress. Previous studies have focused primarily on p16 regulation at the transcriptional level; comparatively little is known about the protein's intracellular localization and degradation. The autophagy–lysosomal pathway has been implicated in the subcellular trafficking and turnover of various stress‐response proteins and has also been shown to attenuate age‐related pathologies, but it is unclear whether p16 is involved in this pathway. Here, we investigate the role of autophagy, vesicular trafficking, and lysosomal degradation on p16 expression and localization in human epithelial cells. Time‐lapse fluorescence microscopy using an endogenous p16‐mCherry reporter revealed that serum starvation, etoposide, and hydrogen peroxide stimulate autophagy and drive p16 recruitment to acidic cytoplasmic vesicles within 4 hr. Blocking lysosomal proteases with leupeptin and ammonium chloride resulted in the accumulation of p16 within lysosomes and increased total p16 levels suggesting that p16 is degraded by this pathway. Furthermore, autophagy blockers chloroquine and bafilomycin A1 caused p16 aggregation within stalled vesicles containing autophagosome marker LC3. Increase of p16 within these vesicles coincided with the accumulation of LC3‐II. Knockdown of autophagosome chaperone p62 attenuated the formation of p16 aggregates in lysosomes, suggesting that p16 is targeted to these vesicles by p62. Taken together, these results implicate the autophagy pathway as a novel regulator of p16 degradation and localization, which could play a role in the etiology of cancer and age‐related diseases.
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Affiliation(s)
- Philip R. Coryell
- Department of Genetics University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
| | - Supreet K. Goraya
- Department of Genetics University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
| | - Katherine A. Griffin
- Department of Genetics University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
| | - Margaret A. Redick
- Department of Genetics University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
| | - Samuel R. Sisk
- Department of Genetics University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
| | - Jeremy E. Purvis
- Department of Genetics University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
- Curriculum for Bioinformatics and Computational Biology University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
- Lineberger Comprehensive Cancer Center University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
- Computational Medicine Program University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
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