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Tang C, Lai Y, Li L, Situ MY, Li S, Cheng B, Chen Y, Lei Z, Ren Y, Zhou J, Wu Y, Zhong H, Li K, Zeng L, Guo Z, Peng S, Huang H. SERPINH1 modulates apoptosis by inhibiting P62 ubiquitination degradation to promote bone metastasis of prostate cancer. iScience 2024; 27:110427. [PMID: 39161960 PMCID: PMC11332800 DOI: 10.1016/j.isci.2024.110427] [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: 12/27/2023] [Revised: 04/30/2024] [Accepted: 06/28/2024] [Indexed: 08/21/2024] Open
Abstract
Prostate cancer (PCa) is one of the most prevalent urogenital malignancies. Bone metastasis from PCa reduces patient survival rates significantly. There currently exists no effective treatment for bone metastatic PCa, and the underlying mechanisms remain unclear. This study performed transcriptomic screening on PCa bone metastasis specimens and intersection analysis in public databases and identified SERPINH1 as a potential target for treatment. SERPINH1 was found to be upregulated in PCa bone metastases and with poor prognosis, high Gleason score, and advanced metastatic status. SERPINH1 induced PCa cells' bone metastasis in vivo, promoted their proliferation, and mitigated apoptosis. Mechanistically, SERPINH1 bound to P62, reducing TRIM21-mediated K63-linked ubiquitination degradation of P62 and promoting proliferation and resistance to apoptosis of PCa. This study suggests the regulation of ubiquitination degradation of P62 by SERPINH1 that promotes PCa bone metastasis and can be considered as a potential target for treatment of bone metastatic PCa.
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Affiliation(s)
- Chen Tang
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Department of Urology, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen, Guangdong 518052, P.R. China
| | - Yiming Lai
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou 510120, Guangdong, P.R. China
- Department of Urology, the Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, Xinjiang, P.R. China
| | - Lingfeng Li
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
| | - Min-yi Situ
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, P.R. China
| | - Shurui Li
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
| | - Bisheng Cheng
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
| | - Yongming Chen
- Beijing Hospital, National Center of Gerontology Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, Dongcheng, P.R. China
| | - Zhen Lei
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
| | - YanTing Ren
- Department of Pathology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
| | - Jie Zhou
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
| | - Yongxin Wu
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
| | - Haitao Zhong
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
| | - Kaiwen Li
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou 510120, Guangdong, P.R. China
| | - Lexiang Zeng
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou 510120, Guangdong, P.R. China
| | - Zhenghui Guo
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou 510120, Guangdong, P.R. China
| | - Shengmeng Peng
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou 510120, Guangdong, P.R. China
| | - Hai Huang
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, P.R. China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou 510120, Guangdong, P.R. China
- Department of Urology, the Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, Xinjiang, P.R. China
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Wang YJ, Di XJ, Zhang PP, Chen X, Williams MP, Han DY, Nashmi R, Henderson BJ, Moss FJ, Mu TW. Hsp47 promotes biogenesis of multi-subunit neuroreceptors in the endoplasmic reticulum. eLife 2024; 13:e84798. [PMID: 38963323 PMCID: PMC11257679 DOI: 10.7554/elife.84798] [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: 11/18/2022] [Accepted: 05/21/2024] [Indexed: 07/05/2024] Open
Abstract
Protein homeostasis (proteostasis) deficiency is an important contributing factor to neurological and metabolic diseases. However, how the proteostasis network orchestrates the folding and assembly of multi-subunit membrane proteins is poorly understood. Previous proteomics studies identified Hsp47 (Gene: SERPINH1), a heat shock protein in the endoplasmic reticulum lumen, as the most enriched interacting chaperone for gamma-aminobutyric acid type A (GABAA) receptors. Here, we show that Hsp47 enhances the functional surface expression of GABAA receptors in rat neurons and human HEK293T cells. Furthermore, molecular mechanism study demonstrates that Hsp47 acts after BiP (Gene: HSPA5) and preferentially binds the folded conformation of GABAA receptors without inducing the unfolded protein response in HEK293T cells. Therefore, Hsp47 promotes the subunit-subunit interaction, the receptor assembly process, and the anterograde trafficking of GABAA receptors. Overexpressing Hsp47 is sufficient to correct the surface expression and function of epilepsy-associated GABAA receptor variants in HEK293T cells. Hsp47 also promotes the surface trafficking of other Cys-loop receptors, including nicotinic acetylcholine receptors and serotonin type 3 receptors in HEK293T cells. Therefore, in addition to its known function as a collagen chaperone, this work establishes that Hsp47 plays a critical and general role in the maturation of multi-subunit Cys-loop neuroreceptors.
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Affiliation(s)
- Ya-Juan Wang
- Department of Physiology and Biophysics, Case Western Reserve UniversityClevelandUnited States
| | - Xiao-Jing Di
- Department of Physiology and Biophysics, Case Western Reserve UniversityClevelandUnited States
| | - Pei-Pei Zhang
- Department of Physiology and Biophysics, Case Western Reserve UniversityClevelandUnited States
| | - Xi Chen
- Department of Physiology and Biophysics, Case Western Reserve UniversityClevelandUnited States
| | - Marnie P Williams
- Department of Physiology and Biophysics, Case Western Reserve UniversityClevelandUnited States
| | - Dong-Yun Han
- Department of Physiology and Biophysics, Case Western Reserve UniversityClevelandUnited States
| | - Raad Nashmi
- Department of Biology, University of VictoriaVictoriaCanada
| | - Brandon J Henderson
- Department of Biomedical Sciences, Marshall UniversityHuntingtonUnited States
| | - Fraser J Moss
- Department of Physiology and Biophysics, Case Western Reserve UniversityClevelandUnited States
| | - Ting-Wei Mu
- Department of Physiology and Biophysics, Case Western Reserve UniversityClevelandUnited States
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3
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Jacobs ER, Ross GR, Padilla N, Pan AY, Liegl M, Puzyrenko A, Lai S, Dai Q, Uche N, Rubenstein JC, North PE, Ibrahim ESH, Sun Y, Felix JC, Rui H, Benjamin IJ. Profibrotic COVID-19 subphenotype exhibits enhanced localized ER-dependent HSP47 + expression in cardiac myofibroblasts in situ. J Mol Cell Cardiol 2023; 185:1-12. [PMID: 37839656 PMCID: PMC11000691 DOI: 10.1016/j.yjmcc.2023.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/07/2023] [Accepted: 10/10/2023] [Indexed: 10/17/2023]
Abstract
We recently described a subgroup of autopsied COVID-19 subjects (∼40%), termed 'profibrotic phenotype,' who exhibited clusters of myofibroblasts (Mfbs), which were positive for the collagen-specific chaperone heat shock protein 47 (HSP47+) in situ. This report identifies increased, localized (hot spot restricted) expression of αSMA, COLα1, POSTN and FAP supporting the identity of HSP47+ cells as myofibroblasts and characterizing a profibrotic extracellular matrix (ECM) phenotype. Coupled with increased GRP78 in COVID-19 subjects, these data could reflect induction of the unfolded protein response for mitigation of proteostasis (i.e., protein homeostasis) dysfunction in discrete clusters of cells. ECM shifts in selected COVID-19 subjects occur without significant increases in either global trichrome positive staining or myocardial injury based quantitively on standard H&E scoring. Our findings also suggest distinct mechanism(s) for ECM remodeling in the setting of SARS-CoV-2 infection. The ratio of CD163+/CD68+ cells is increased in hot spots of profibrotic hearts compared with either controls or outside of hot spots in COVID-19 subjects. In sum, matrix remodeling of human COVID-19 hearts in situ is characterized by site-restricted profibrotic mediated (e.g., HSP47+ Mfbs, CD163+ Mφs) modifications in ECM (i.e., COLα1, POSTN, FAP), with a strong correlation between COLα1 and HSP47+cells within hot spots. Given the established associations of viral infection (e.g., human immunodeficiency virus; HIV), myocardial fibrosis and sudden cardiac death, early screening tools (e.g., plasma biomarkers, noninvasive cardiac magnetic resonance imaging) for diagnosis, monitoring and treatment of fibrotic ECM remodeling are warranted for COVID-19 high-risk populations.
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Affiliation(s)
- Elizabeth R Jacobs
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, United States of America; Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States of America; Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States of America; Clement J. Zablocki VA Medical Center, Milwaukee, WI, United States of America
| | - Gracious R Ross
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States of America
| | - Nathan Padilla
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States of America
| | - Amy Y Pan
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States of America; Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, United States of America; Children's Research Institute, Milwaukee, WI, United States of America
| | - Melodee Liegl
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States of America; Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, United States of America; Children's Research Institute, Milwaukee, WI, United States of America
| | - Andrii Puzyrenko
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, United States of America
| | - Shuping Lai
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, United States of America; Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States of America
| | - Qiang Dai
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, United States of America; Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States of America
| | - Nnamdi Uche
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States of America; Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States of America
| | - Jason C Rubenstein
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, United States of America; Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States of America
| | - Paula E North
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States of America; Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, United States of America; Children's Research Institute, Milwaukee, WI, United States of America
| | - El-Sayed H Ibrahim
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States of America; Department of Radiology, Medical College of Wisconsin, Milwaukee, WI, United States of America
| | - Yunguang Sun
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States of America; Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, United States of America
| | - Juan C Felix
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, United States of America
| | - Hallgeir Rui
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States of America; Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, United States of America
| | - Ivor J Benjamin
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, United States of America; Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States of America; Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States of America; Department of Cell Biology, Neuroanatomy and Anatomy, Medical College of Wisconsin, Milwaukee, WI, United States of America.
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4
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Hazari Y, Urra H, Garcia Lopez VA, Diaz J, Tamburini G, Milani M, Pihan P, Durand S, Aprahamia F, Baxter R, Huang M, Dong XC, Vihinen H, Batista-Gonzalez A, Godoy P, Criollo A, Ratziu V, Foufelle F, Hengstler JG, Jokitalo E, Bailly-Maitre B, Maiers JL, Plate L, Kroemer G, Hetz C. The endoplasmic reticulum stress sensor IRE1 regulates collagen secretion through the enforcement of the proteostasis factor P4HB/PDIA1 contributing to liver damage and fibrosis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.02.538835. [PMID: 37205565 PMCID: PMC10187203 DOI: 10.1101/2023.05.02.538835] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Collagen is one the most abundant proteins and the main cargo of the secretory pathway, contributing to hepatic fibrosis and cirrhosis due to excessive deposition of extracellular matrix. Here we investigated the possible contribution of the unfolded protein response, the main adaptive pathway that monitors and adjusts the protein production capacity at the endoplasmic reticulum, to collagen biogenesis and liver disease. Genetic ablation of the ER stress sensor IRE1 reduced liver damage and diminished collagen deposition in models of liver fibrosis triggered by carbon tetrachloride (CCl 4 ) administration or by high fat diet. Proteomic and transcriptomic profiling identified the prolyl 4-hydroxylase (P4HB, also known as PDIA1), which is known to be critical for collagen maturation, as a major IRE1-induced gene. Cell culture studies demonstrated that IRE1 deficiency results in collagen retention at the ER and altered secretion, a phenotype rescued by P4HB overexpression. Taken together, our results collectively establish a role of the IRE1/P4HB axis in the regulation of collagen production and its significance in the pathogenesis of various disease states.
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Pomerleau V, Nicolas VR, Jurkovic CM, Faucheux N, Lauzon MA, Boisvert FM, Perreault N. FOXL1+ Telocytes in mouse colon orchestrate extracellular matrix biodynamics and wound repair resolution. J Proteomics 2023; 271:104755. [PMID: 36272709 DOI: 10.1016/j.jprot.2022.104755] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 10/06/2022] [Accepted: 10/10/2022] [Indexed: 11/07/2022]
Abstract
Recent studies have identified FoxL1+-telocytes (TCFoxL1+) as key players in gut epithelial-mesenchymal interactions which can determine the colonic microenvironment. Bone morphogenetic protein signaling disruption in TCFoxL1+ alters the physical and cellular microenvironment and leads to colon pathophysiology. This suggests a role for TCFoxL1+ in stromagenesis, but it is hard to identify the specific contribution of TCFoxL1+ when analyzing whole tissue profiling studies. We performed ex vivo deconstruction of control and BmpR1a△FoxL1+ colon samples, isolated the mesenchyme-enriched fractions, and determined the protein composition of the in vivo extracellular matrix (ECM) to analyze microenvironment variation. Matrisomic analysis of mesenchyme fractions revealed modulations in ECM proteins with functions associated with innate immunity, epithelial wound healing, and the collagen network. These results show that TCFoxL1+ is critical in orchestrating the biodynamics of the colon ECM. TCFoxL1+ disfunction reprograms the gut's microenvironment and drives the intestinal epithelium toward colonic pathologies. SIGNIFICANCE: In this study, the method that was elected to isolate ECM proteins might not encompass the full extent of ECM proteins in a tissue, due to the protocol chosen, as this protocol by Naba et al., targets more the insoluble part of the matrisome and eliminates the more soluble components in the first steps. However, this ECM-enrichment strategy represents an improvement and interesting avenue to study ECM proteins in the colon compared to total tissue analysis with a background of abundant cellular protein. Thus, the matrisomic approach presented in this study, and its target validation delivered a broader evaluation of the matrix remodeling occurring in the colonic sub-epithelial mesenchyme of the BmpR1a△FoxL1+ mouse model.
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Affiliation(s)
- Véronique Pomerleau
- Département d'Immunologie et Biologie Cellulaire, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Vilcy Reyes Nicolas
- Département d'Immunologie et Biologie Cellulaire, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Carla-Marie Jurkovic
- Département d'Immunologie et Biologie Cellulaire, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Nathalie Faucheux
- Département de génie chimique et de génie biotechnologique, Faculté de Génie, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Marc-Antoine Lauzon
- Département de génie chimique et de génie biotechnologique, Faculté de Génie, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - François-Michel Boisvert
- Département d'Immunologie et Biologie Cellulaire, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Nathalie Perreault
- Département d'Immunologie et Biologie Cellulaire, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, QC, Canada.
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6
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Tanaka T, Moriya K, Tsunenaga M, Yanagawa T, Morita H, Minowa T, Tagawa YI, Hanagata N, Inagaki Y, Ikoma T. Visualized procollagen Iα1 demonstrates the intracellular processing of propeptides. Life Sci Alliance 2022; 5:5/5/e202101060. [PMID: 35181633 PMCID: PMC8860094 DOI: 10.26508/lsa.202101060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 01/26/2022] [Accepted: 01/26/2022] [Indexed: 12/26/2022] Open
Abstract
Procollagen Iα1 with two tags reveals the different fates of processed propeptides, the rate-limiting step in collagen secretion, and a link between defects in intracellular processing and diseases. The processing of type I procollagen is essential for fibril formation; however, the steps involved remain controversial. We constructed a live cell imaging system by inserting fluorescent proteins into type I pre-procollagen α1. Based on live imaging and immunostaining, the C-propeptide is intracellularly cleaved at the perinuclear region, including the endoplasmic reticulum, and subsequently accumulates at the upside of the cell. The N-propeptide is also intracellularly cleaved, but is transported with the repeating structure domain of collagen into the extracellular region. This system makes it possible to detect relative increases and decreases in collagen secretion in a high-throughput manner by assaying fluorescence in the culture medium, and revealed that the rate-limiting step for collagen secretion occurs after the synthesis of procollagen. In the present study, we identified a defect in procollagen processing in activated hepatic stellate cells, which secrete aberrant collagen fibrils. The results obtained demonstrated the intracellular processing of type I procollagen, and revealed a link between dysfunctional processing and diseases such as hepatic fibrosis.
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Affiliation(s)
- Toshiaki Tanaka
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Yokohama, Japan
| | - Koji Moriya
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Yokohama, Japan
| | - Makoto Tsunenaga
- Shiseido Global Innovation Center, 1-2-11 Takashima, Yokohama, Japan
| | - Takayo Yanagawa
- School of Medicine, Tokai University, 143 Shimo-kasuya, Isehara, Japan
| | - Hiromi Morita
- Nanotechnology Innovation Station, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Japan
| | - Takashi Minowa
- Nanotechnology Innovation Station, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Japan
| | - Yoh-Ichi Tagawa
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Yokohama, Japan
| | - Nobutaka Hanagata
- Nanotechnology Innovation Station, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Japan
| | - Yutaka Inagaki
- School of Medicine, Tokai University, 143 Shimo-kasuya, Isehara, Japan
| | - Toshiyuki Ikoma
- School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo, Japan
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7
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Manzon LA, Zak MA, Agee M, Boreham DR, Wilson JY, Somers CM, Manzon RG. Thermal acclimation alters both basal heat shock protein gene expression and the heat shock response in juvenile lake whitefish (Coregonus clupeaformis). J Therm Biol 2022; 104:103185. [DOI: 10.1016/j.jtherbio.2021.103185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 12/21/2021] [Accepted: 12/31/2021] [Indexed: 12/26/2022]
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8
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Li M, Huang S, Zhang Y, Song Z, Fu H, Lin Z, Huang X. Regulation of the unfolded protein response transducer IRE1α by SERPINH1 aggravates periodontitis with diabetes mellitus via prolonged ER stress. Cell Signal 2022; 91:110241. [PMID: 34998932 DOI: 10.1016/j.cellsig.2022.110241] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 12/31/2021] [Accepted: 12/31/2021] [Indexed: 12/18/2022]
Abstract
The hyperglycemic microenvironment induced by diabetes mellitus aggravates the inflammatory response, in which the IRE1α signal transduction pathway of the unfolded protein response (UPR) participates. However, the mechanism by which hyperglycemia regulates the IRE1α signaling pathway and affects endoplasmic reticulum (ER) homeostasis in human gingival epithelium in periodontitis with diabetes mellitus remains unknown. Our current data provide evidence that diabetes mellitus causes a hyperinflammatory response in the gingival epithelium, which accelerates periodontal inflammation. Next, we assessed UPR-IRE1α signaling in periodontitis with diabetes mellitus by examining human clinical gingival epithelium samples from healthy subjects, subjects with periodontitis and subjects with periodontitis with diabetes mellitus and by in vitro challenge of human epithelial cells with a hyperglycemic microenvironment. The results showed that a hyperglycemic microenvironment inhibited the IRE1α/XBP1 axis, decreased the expression of a UPR target gene (GRP78), and ultimately impaired the UPR, causing ER stress to be prolonged or more severe in human gingival epithelium. Subsequently, RNA sequencing (RNA-seq) data was analyzed to investigate the expression of ER-related genes in human gingival epithelium. Experiments verified that the mechanism by which periodontitis is aggravated in individuals with diabetes mellitus may involve decreased SERPINH1 expression. Furthermore, experiments in SERPINH1-knockdown and SERPINH1-overexpression models established in vitro indicated that SERPINH1 might act as an activator of IRE1α, maintaining human gingival epithelium homeostasis and reducing proinflammatory cytokine expression by preventing prolonged ER stress induced by high-glucose conditions. In conclusion, regulation of the UPR transducer IRE1α by SERPINH1 alleviates periodontitis with diabetes mellitus by mitigating prolonged ER stress. This finding provides evidence for the further study of periodontitis with diabetes mellitus.
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Affiliation(s)
- Mengdi Li
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China.
| | - Shuheng Huang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China.
| | - Yong Zhang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China.
| | - Zhi Song
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China.
| | - Haijun Fu
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China.
| | - Zhengmei Lin
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China.
| | - Xin Huang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China.
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9
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Zhang M, Wang M, Wang H, Zhang Y, Li Z, Feng Y, Liu Y, Liu Y, Liao Y, Wang W, Fang Q, Chen J. Decreased Expression of Heat Shock Protein 47 Is Associated with T-2 Toxin and Low Selenium-Induced Matrix Degradation in Cartilages of Kashin-Beck Disease. Biol Trace Elem Res 2021; 199:944-954. [PMID: 32591934 DOI: 10.1007/s12011-020-02237-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 06/08/2020] [Indexed: 01/21/2023]
Abstract
Recent evidence suggests a role of type II collagen in Kashin-Beck disease (KBD) degeneration. We aimed to assess the abnormal expression of heat shock protein 47 (HSP47) which is associated with a decrease in type II collagen and an increase in cartilage degradation in KBD. Hand phalange cartilages were collected from KBD and healthy children. Rats were administered with T-2 toxin under the selenium (Se)-deficient diet. ATDC5 cells were seeded on bone matrix gelatin to construct engineered cartilaginous tissue. C28/I2 and ATDC5 cells and engineered tissue were exposed to different concentrations of T-2 toxin with or without Se. Cartilage degeneration was determined through histological evaluation. The distribution and expression of type II collagen and HSP47 were investigated through immunohistochemistry, western blotting, and real-time PCR. KBD cartilages showed increased chondronecrosis and extracellular matrix degradation in deep zone with decreased type II collagen and HSP47 expression. The low-Se + T-2 toxin animal group showed a significantly lower type II collagen expression along with decreased HSP47 expression. Decreased type II collagen and HSP47 in C28/I2 and ATDC5 cells induced by T-2 toxin showed a dose-dependent manner. Hyaline-like cartilage with zonal layers was developed in engineered cartilaginous tissues, with decreased type II collagen and HSP47 expression found in T-2 toxin-treated group. Se-supplementation partially antagonized the inhibitory effects of T-2 toxin in chondrocytes and cartilages. HSP47 plays a role in the degenerative changes of KBD and associated with T-2 toxin-induced decreased type II collagen expression, further promoting matrix degradation.
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Affiliation(s)
- Meng Zhang
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR of China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Mengying Wang
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR of China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Hui Wang
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR of China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Ying Zhang
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR of China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Zhengzheng Li
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR of China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yiping Feng
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR of China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yinan Liu
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR of China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yue Liu
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR of China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yucheng Liao
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR of China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Wenjun Wang
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR of China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Qian Fang
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR of China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Jinghong Chen
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR of China, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
- The Institute of Endemic Diseases, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.
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10
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Zhang X, Zhang X, Huang W, Ge X. The role of heat shock proteins in the regulation of fibrotic diseases. Biomed Pharmacother 2020; 135:111067. [PMID: 33383375 DOI: 10.1016/j.biopha.2020.111067] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 11/08/2020] [Accepted: 11/20/2020] [Indexed: 12/29/2022] Open
Abstract
Heat shock proteins (HSPs) are key players to restore cell homeostasis and act as chaperones by assisting the folding and assembly of newly synthesized proteins and preventing protein aggregation. Recently, evidence has been accumulating that HSPs have been proven to have other functions except for the classical molecular chaperoning in that they play an important role in a wider range of fibrotic diseases via modulating cytokine induction and inflammation response, including lung fibrosis, liver fibrosis, and idiopathic pulmonary fibrosis. The recruitment of inflammatory cells, a large number of secretion of pro-fibrotic cytokines such as transforming growth factor-β1 (TGF-β1) and increased apoptosis, oxidative stress, and proteasomal system degradation are all events occurring during fibrogenesis, which might be associated with HSPs. However, their role on fibrotic process is not yet fully understood. In this review, we discuss new discoveries regarding the involvement of HSPs in the regulation of organ and tissue fibrosis, and note recent findings suggesting that HSPs may be a promising therapeutic target for improving the current frustrating outcome of fibrotic disorders.
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Affiliation(s)
- Xiaoling Zhang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, PR China; School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, 226019, PR China.
| | - Xiaoyan Zhang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, PR China
| | - Wenmin Huang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, PR China
| | - Xiaoqun Ge
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, PR China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou, 225001, PR China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, PR China.
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11
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Madhu V, Guntur AR, Risbud MV. Role of autophagy in intervertebral disc and cartilage function: implications in health and disease. Matrix Biol 2020; 100-101:207-220. [PMID: 33301899 DOI: 10.1016/j.matbio.2020.12.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 12/12/2022]
Abstract
The intervertebral disc and cartilage are specialized, extracellular matrix-rich tissues critical for absorbing mechanical loads, providing flexibility to the joints, and longitudinal growth in the case of growth plate cartilage. Specialized niche conditions in these tissues, such as hypoxia, are critical in regulating cellular activities including autophagy, a lysosomal degradation pathway that promotes cell survival. Mounting evidence suggests that dysregulation of autophagic pathways underscores many skeletal pathologies affecting the spinal column, articular and growth plate cartilages. Many lysosomal storage disorders characterized by the accumulation of partially degraded glycosaminoglycans (GAGs) due to the lysosomal dysfunction thus affect skeletal tissues and result in altered ECM structure. Likewise, pathologies that arise from mutations in genes encoding ECM proteins and ECM processing, folding, and post-translational modifications, result in accumulation of misfolded proteins in the ER, ER stress and autophagy dysregulation. These conditions evidence reduced secretion of ECM proteins and/or increased secretion of mutant proteins, thereby impairing matrix quality and the integrity of affected skeletal tissues and causing a lack of growth and degeneration. In this review, we discuss the role of autophagy and mechanisms of its regulation in the intervertebral disc and cartilages, as well as how dysregulation of autophagic pathways affects these skeletal tissues.
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Affiliation(s)
- Vedavathi Madhu
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Anyonya R Guntur
- Center for Molecular Medicine, Maine Medical Center Research Institute, Scarborough, ME, USA; Tufts University School of Medicine, Tufts University, Boston, MA USA; Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME USA
| | - Makarand V Risbud
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA, USA; Cell Biology and Regenerative Medicine Graduate Program, Thomas Jefferson University, Philadelphia, PA, USA.
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12
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Arima Y, Uemura N, Hashimoto Y, Baba S, Matsumoto N. Evaluation of bone regeneration by porous alpha-tricalcium phosphate/atelocollagen sponge composite in rat calvarial defects. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.odw.2012.11.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Yoshiyuki Arima
- Department of Orthodontics, Graduate School of Dentistry, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka 573-1121, Japan
| | - Naoya Uemura
- Department of Oral Implantology, Osaka Dental University, 1-5-17 Otemae, Chuo-ku, Osaka 540-0008, Japan
| | - Yoshiya Hashimoto
- Department of Biomaterials, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka 573-1121, Japan
| | - Shunsuke Baba
- Department of Oral Implantology, Osaka Dental University, 1-5-17 Otemae, Chuo-ku, Osaka 540-0008, Japan
| | - Naoyuki Matsumoto
- Department of Orthodontics, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka 573-1121, Japan
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13
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Bigaeva E, Gore E, Mutsaers HAM, Oosterhuis D, Kim YO, Schuppan D, Bank RA, Boersema M, Olinga P. Exploring organ-specific features of fibrogenesis using murine precision-cut tissue slices. Biochim Biophys Acta Mol Basis Dis 2019; 1866:165582. [PMID: 31676376 DOI: 10.1016/j.bbadis.2019.165582] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 10/06/2019] [Accepted: 10/16/2019] [Indexed: 12/14/2022]
Abstract
Fibrosis is the hallmark of pathologic tissue remodelling in most chronic diseases. Despite advances in our understanding of the mechanisms of fibrosis, it remains uncured. Fibrogenic processes share conserved core cellular and molecular pathways across organs. In this study, we aimed to elucidate shared and organ-specific features of fibrosis using murine precision-cut tissue slices (PCTS) prepared from small intestine, liver and kidneys. PCTS displayed substantial differences in their baseline gene expression profiles: 70% of the extracellular matrix (ECM)-related genes were differentially expressed across the organs. Culture for 48 h induced significant changes in ECM regulation and triggered the onset of fibrogenesis in all PCTS in organ-specific manner. TGFβ signalling was activated during 48 h culture in all PCTS. However, the degree of its involvement varied: both canonical and non-canonical TGFβ pathways were activated in liver and kidney slices, while only canonical, Smad-dependent, cascade was involved in intestinal slices. The treatment with galunisertib blocked the TGFβRI/SMAD2 signalling in all PCTS, but attenuated culture-induced dysregulation of ECM homeostasis and mitigated the onset of fibrogenesis with organ-specificity. In conclusion, regardless the many common features in pathophysiology of organ fibrosis, PCTS displayed diversity in culture-induced responses and in response to the treatment with TGFβRI kinase inhibitor galunisertib, even though it targets a core fibrosis pathway. A clear understanding of the common and organ-specific features of fibrosis is the basis for developing novel antifibrotic therapies.
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Affiliation(s)
- Emilia Bigaeva
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, the Netherlands
| | - Emilia Gore
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, the Netherlands
| | - Henricus A M Mutsaers
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, the Netherlands; Department of Clinical Medicine, Aarhus University, Denmark
| | - Dorenda Oosterhuis
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, the Netherlands
| | - Yong Ook Kim
- Institute of Translational Immunology and Research Center for Immunotherapy, University Medical Center, Johannes Gutenberg University, Obere Zahlbacherstraße 63, Mainz 55131, Germany
| | - Detlef Schuppan
- Institute of Translational Immunology and Research Center for Immunotherapy, University Medical Center, Johannes Gutenberg University, Obere Zahlbacherstraße 63, Mainz 55131, Germany; Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, 330 Brookline Avenue, MA 02215, USA
| | - Ruud A Bank
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, the Netherlands
| | - Miriam Boersema
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, the Netherlands
| | - Peter Olinga
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, the Netherlands.
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14
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Khalil H, Kanisicak O, Vagnozzi RJ, Johansen AK, Maliken BD, Prasad V, Boyer JG, Brody MJ, Schips T, Kilian KK, Correll RN, Kawasaki K, Nagata K, Molkentin JD. Cell-specific ablation of Hsp47 defines the collagen-producing cells in the injured heart. JCI Insight 2019; 4:e128722. [PMID: 31393098 PMCID: PMC6693833 DOI: 10.1172/jci.insight.128722] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Collagen production in the adult heart is thought to be regulated by the fibroblast, although cardiomyocytes and endothelial cells also express multiple collagen mRNAs. Molecular chaperones are required for procollagen biosynthesis, including heat shock protein 47 (Hsp47). To determine the cell types critically involved in cardiac injury–induced fibrosis theHsp47 gene was deleted in cardiomyocytes, endothelial cells, or myofibroblasts. Deletion ofHsp47 from cardiomyocytes during embryonic development or adult stages, or deletion from adult endothelial cells, did not affect cardiac fibrosis after pressure overload injury. However, myofibroblast-specific ablation of Hsp47; blocked fibrosis and deposition of collagens type I, III, and V following pressure overload as well as significantly reduced cardiac hypertrophy. Fibroblast-specific Hsp47-deleted mice showed lethality after myocardial infarction injury, with ineffective scar formation and ventricular wall rupture. Similarly, only myofibroblast-specific deletion of Hsp47reduced fibrosis and disease in skeletal muscle in a mouse model of muscular dystrophy. Mechanistically, deletion of Hsp47 from myofibroblasts reduced mRNA expression of fibrillar collagens and attenuated their proliferation in the heart without affecting paracrine secretory activity of these cells. The results show that myofibroblasts are the primary mediators of tissue fibrosis and scar formation in the injured adult heart, which unexpectedly affects cardiomyocyte hypertrophy.
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Affiliation(s)
- Hadi Khalil
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center
| | - Onur Kanisicak
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center,Department of Pathology, University of Cincinnati, Cincinnati, Ohio, USA
| | | | | | - Bryan D. Maliken
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center
| | - Vikram Prasad
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center
| | - Justin G. Boyer
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center
| | - Matthew J. Brody
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center
| | - Tobias Schips
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center
| | - Katja K. Kilian
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center
| | - Robert N. Correll
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center,Department of Biological Sciences, University of Alabama, Tuscaloosa, Alabama, USA
| | - Kunito Kawasaki
- Institute for Protein Dynamics, Kyoto Sangyo University, Kyoto, Japan
| | - Kazuhiro Nagata
- Institute for Protein Dynamics, Kyoto Sangyo University, Kyoto, Japan
| | - Jeffery D. Molkentin
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center,Howard Hughes Medical Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
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15
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Schwarze U, Cundy T, Liu YJ, Hofman PL, Byers PH. Compound heterozygosity for a frameshift mutation and an upstream deletion that reduces expression of SERPINH1 in siblings with a moderate form of osteogenesis imperfecta. Am J Med Genet A 2019; 179:1466-1475. [PMID: 31179625 DOI: 10.1002/ajmg.a.61170] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 02/13/2019] [Accepted: 04/15/2019] [Indexed: 12/12/2022]
Abstract
SERPINH1 encodes the collagen chaperone HSP47 that binds to arginine-rich sequences in the type I procollagen trimers and provides the final steps in the folding and stabilization of the triple helical domain. Loss of both alleles in mice results in very early embryonic lethality. SERPINH1 mutations have been associated with one of the rarest forms of recessively inherited osteogenesis imperfecta (OI) with a moderate to severe phenotype. We identified a family with non-consanguineous unaffected parents who had two children with moderate short stature, low bone density, and fractures. Both children were compound heterozygotes for two mutations: a frameshift in the last exon that deleted the RER retention signal, and a 5,274 bp deletion 2.37 kb upstream from the transcription start site. The maternally-inherited frameshift allele was expressed at normal levels, but the protein was unstable. The mRNA encoded by the second allele represented about 50% of that from the frameshift-containing allele. The upstream deletion was inherited from the father, and the mRNA encoded by that allele in his cultured dermal fibroblasts was also expressed at a low level, which confirmed that this domain had a regulatory function for SERPINH1. Regulatory mutations are uncommon causes of human genetic disorders, and the ability to measure expression levels in appropriate cells is key to their identification.
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Affiliation(s)
- Ulrike Schwarze
- Department of Pathology, University of Washington, Seattle, Washington
| | - Tim Cundy
- Department of Medicine, Faculty of Medical & Health Sciences, University of Auckland, New Zealand
| | - Yajuan J Liu
- Department of Pathology, University of Washington, Seattle, Washington
| | - Paul L Hofman
- Liggins Institute, Faculty of Medical & Health Sciences, University of Auckland, New Zealand
| | - Peter H Byers
- Department of Pathology, University of Washington, Seattle, Washington.,Department of Medicine (Medical Genetics), University of Washington, Seattle, Washington
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16
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Overview on the Evolution of Laser Welding of Vascular and Nervous Tissues. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9102157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Laser welding presents a core position in the health sector. This process has had an outstanding impact on the surgical procedures from many medical areas, such as on vascular and nervous surgeries. The aim of the present research is to present an overview on the evolution of laser welding of vascular and nervous tissues. These surgeries present many advantages, such as an absence of foreign-body reactions and aneurysms and good tensile strengths. However, despite the sutureless nature of the process, complementary sutures have been applied to support the procedure success. An important concern in vascular and nervous laser welding is the thermal damage. The development of temperature-controlled feedback systems has reduced this concern with a very precise control of the laser parameters. The bonding strength of vascular and nerve laser welds can be enhanced with the application of solder solutions, bonding materials, and laser-activated dyes. Alternative techniques to laser welding, such as photochemical tissue bonding and electrosurgical high-frequency technologies, have also been tested for vascular and nervous repairs.
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17
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Foster JW, Shinde V, Soiberman US, Sathe G, Liu S, Wan J, Qian J, Dauoud Y, Pandey A, Jun AS, Chakravarti S. Integrated Stress Response and Decreased ECM in Cultured Stromal Cells From Keratoconus Corneas. Invest Ophthalmol Vis Sci 2019; 59:2977-2986. [PMID: 30029277 PMCID: PMC5995483 DOI: 10.1167/iovs.18-24367] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose Keratoconus (KC) is a multifactorial disease where progressive thinning and weakening of the cornea leads to loss of visual acuity. Although the underlying etiology is poorly understood, a major endpoint is a dysfunctional stromal connective tissue matrix. Using multiple individual KC corneas, we determined that matrix production by keratocytes is severely impeded due to an altered stress response program. Methods KC and donor (DN) stromal keratocytes were cultured in low glucose serum-free medium containing insulin, selenium and transferrin. Fibronectin, collagens and proteins related to their chaperone, processing and export, matrix metalloproteinase, and stress response related proteins were investigated by immunoblotting, immunocytochemistry, hydroxyproline quantification, and gelatin zymography. Multiplexed mass spectrometry was used for global proteomic profiling of 5 individual DN and KC cell culture. Transcription of selected proteins was assayed by qPCR. Results DN and KC cells showed comparable survival and growth. However, immunoblotting of selected ECM proteins and global proteomics showed decreased fibronectin, collagens, PCOLCE, ADAMTS2, BMP1, HSP47, other structural and cytoskeletal proteins in KC. Phosphorylated (p) eIF2α, a translation regulator and its target, ATF4 were increased in KC cultured cells and corneal sections. Conclusions The profound decrease in structural proteins in cultured KC cells and increase in the p-eIF2α, and ATF4, suggest a stress related blockade in structural proteins not immediately needed for cell survival. Therefore, this cell culture system reveals an intrinsic aggravated stress response with consequent decrease in ECM proteins as potential pathogenic underpinnings in KC.
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Affiliation(s)
- James W Foster
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Vishal Shinde
- Department of Ophthalmology, NYU Langone Health, New York, New York, United States
| | - Uri S Soiberman
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Gajanan Sathe
- Manipal Academy of Higher Education, Karnataka, India
| | - Sheng Liu
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Julius Wan
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana, United States
| | - Jiang Qian
- Department of Ophthalmology, NYU Langone Health, New York, New York, United States
| | - Yassine Dauoud
- Department of Ophthalmology, NYU Langone Health, New York, New York, United States
| | - Akhilesh Pandey
- Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Albert S Jun
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Shukti Chakravarti
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Ophthalmology, NYU Langone Health, New York, New York, United States
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18
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Garip Ustaoglu S, Evis Z, Ilbay G, Boskey AL, Severcan F. Side-Effects of Convulsive Seizures and Anti-Seizure Therapy on Bone in a Rat Model of Epilepsy. APPLIED SPECTROSCOPY 2018; 72:689-705. [PMID: 28905646 DOI: 10.1177/0003702817734617] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The severe sole effects of seizures on the cortical part of bone were reported in our previous study. However, the side effects of anti-epileptic drug therapy on bones has not been differentiated from the effects of the convulsive seizures, yet. This study provides the first report on differentiation of the effects of seizures and carbamazepine (a widely used antiepileptic drug) therapy on bones; 50 mg/kg/day drug was given to genetically induced absence epileptic rats for five weeks. Distinct bone regions including cortical, trabecular, and growth plate in each of tibia, femur, and spine tissues were studied using Fourier transform infrared (FT-IR) imaging and Vickers microhardness test. Blood levels of vitamin D and bone turnover biomarkers were also measured. According to the FT-IR imaging results, both seizure and carbamazepine-treated groups, more dominantly the drug-treated group, had lower mineral content with altered collagen crosslinks and higher crystallinity, implying reduced bone strength. Lower microhardness values also supported lower mechanical strength in bones. The most affected bone tissue and region from seizures and treatment was found as the spine and cortical, respectively. While there was a reduction in vitamin D and calcium levels in both seizure and carbamazepin-treated groups, significantly elevated PTH and bone turnover biomarkers were only seen in the drug-treated group.
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Affiliation(s)
- Sebnem Garip Ustaoglu
- 1 Department of Biochemistry, 187458 Middle East Technical University , Ankara, Turkey
- 2 Department of Medical Biochemistry, 187458 Faculty of Medicine, Altinbas University, Istanbul, Turkey
| | - Zafer Evis
- 3 Department of Engineering Sciences, Middle East Technical University, Ankara, Turkey
| | - Gul Ilbay
- 4 Department of Physiology, Faculty of Medicine, Kocaeli University, Kocaeli, Turkey
| | - Adele Ludin Boskey
- 5 25062 Mineralized Tissue Laboratory, Hospital for Special Surgery, New York, NY, USA
| | - Feride Severcan
- 6 Department of Biological Sciences, 187458 Middle East Technical University , Ankara, Turkey
- 7 Department of Biophysics, 187458 Faculty of Medicine, Altinbas University, Istanbul, Turkey
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19
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Toda M, Mizuguchi S, Minamiyama Y, Yamamoto-Oka H, Aota T, Kubo S, Nishiyama N, Shibata T, Takemura S. Pirfenidone suppresses polarization to M2 phenotype macrophages and the fibrogenic activity of rat lung fibroblasts. J Clin Biochem Nutr 2018; 63:58-65. [PMID: 30087545 PMCID: PMC6064814 DOI: 10.3164/jcbn.17-111] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 11/04/2017] [Indexed: 12/11/2022] Open
Abstract
Pirfenidone is a representative medication to treat interstitial pulmonary fibrosis. Researchers reported pirfenidone (>100 µg/ml) significantly suppressed fibroblast growth in vitro. However, clinically, the maximum concentration of pirfenidone in the blood is approximately 10 µg/ml. We hypothesized there might be an additional mechanism of pirfenidone to fibroblasts indirectly. Macrophages are known to control the activation of fibroblasts via the regulation of inflammatory M1 and suppressive M2 polarization. The aim of this study was to investigate the effects of pirfenidone on alveolar macrophage polarization. Rat alveolar macrophages (NR8383) were stimulated in vitro with lipopolysaccharide (LPS) + interferon (IFN)-γ, or interleukin (IL)-4 + IL-13. Expression of M1 and M2 markers and supernatant's levels of TGF-β1 were assessed after pirfenidone treatment (0-100 µg/ml). Treatment with LPS + INF-γ or IL-4 + IL-13 significantly increased the expression of M1 and M2 markers, respectively. In macrophage polarization assays, pirfenidone significantly reduced the expression of M2 markers at concentrations greater than 10 µg/ml but had no effect on the expression of M1 markers. At these concentrations, pirfenidone significantly reduced TGF-β1 levels in NR8383 culture supernatants. In rat lung fibroblasts treated with NR8383 culture supernatants, pirfenidone significantly suppressed proliferation, and the collagen mRNA and protein levels. In conclusion, our results demonstrated that pirfenidone suppressed polarization to M2 macrophages at clinically relevant concentrations and suppressed the rat lung fibroblasts fibrogenic activity.
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Affiliation(s)
- Michihito Toda
- Department of Thoracic Surgery, Osaka City University Hospital, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Shinjiro Mizuguchi
- Department of Thoracic Surgery, Osaka City University Hospital, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Yukiko Minamiyama
- Department of Thoracic Surgery, Osaka City University Hospital, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Hiroko Yamamoto-Oka
- Department of Thoracic Surgery, Osaka City University Hospital, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Takanori Aota
- Department of Thoracic Surgery, Osaka City University Hospital, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Shoji Kubo
- Department of Thoracic Surgery, Osaka City University Hospital, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Noritoshi Nishiyama
- Department of Thoracic Surgery, Osaka City University Hospital, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Toshihiko Shibata
- Department of Thoracic Surgery, Osaka City University Hospital, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Shigekazu Takemura
- Department of Thoracic Surgery, Osaka City University Hospital, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
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Takemura S, Azuma H, Osada-Oka M, Kubo S, Shibata T, Minamiyama Y. S-allyl-glutathione improves experimental liver fibrosis by regulating Kupffer cell activation in rats. Am J Physiol Gastrointest Liver Physiol 2018; 314:G150-G163. [PMID: 28971836 DOI: 10.1152/ajpgi.00023.2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
S-allyl-glutathione (SAG) is one of the metabolites of diallyl sulfide (DAS), a component of garlic. DAS has shown preventative effects on carcinogenesis in animal models. However, whether synthetic SAG can improve liver fibrosis has not been investigated. We examined the potential preventive effects of SAG on acute and chronic models of liver fibrosis by chronic carbon tetrachloride (CCl4) administration. SAG inhibited liver fibrogenesis induced by CCl4 in a dose-dependent manner and reduced heat shock protein-47 (HSP47), a collagen-specific chaperone, and other fibrosis markers. In fibrosis regression models, after administration of either CCl4 for 9 wk or dimethyl nitrosamine (DMN) for 6 wk, SAG markedly accelerated fibrolysis in both models. In the regression stage of DMN-treated liver, SAG normalized the ratio of M2 phenotype (expression of mannose receptor) in Kupffer cells (KCs). Consistent with these results, the culture supernatants of SAG-treated M2-phenotype KCs inhibited collagen-α1(I) chain (COL1A1) mRNA expression in primary culture-activated rat hepatic stellate cells (HSCs). However, SAG did not directly inhibit HSC activation. In an acute model of CCl4 single injection, SAG inhibited hepatic injury dose dependently consistent with the inhibited the elevation of the bilirubin and ALT levels. These findings suggest that SAG could improve the fibrogenic and fibrolysis cascade via the regulation of excess activated and polarized KCs. SAG may also serve as a preventive and therapeutic agent in fibrosis of other organs for which current clinical therapy is unavailable. NEW & NOTEWORTHY S-allyl-glutathione (SAG) is a metabolite of diallyl sulfide, a component of garlic. SAG increased hepatic glutathione levels and GSH-to-GSSG ratio in normal rats. SAG treatment before or after liver fibrosis from chronic CCl4 administration improved liver fibrosis and regression. SAG decreased heat shock protein-47 (HSP47), a collagen-specific chaperone, and other fibrosis markers in CCl4-treated livers. SAG-treated Kupffer cell conditioned medium also inhibited collagen-α1(I) chain (COL1A1) mRNA expression and other markers in primary culture hepatic stellate cells.
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Affiliation(s)
- Shigekazu Takemura
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka City University , Osaka , Japan
| | - Hideki Azuma
- Department of Applied and Bioapplied Chemistry, Graduate School of Engineering, Osaka City University , Osaka , Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University , Kyoto , Japan
| | - Shoji Kubo
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka City University , Osaka , Japan
| | - Toshihiko Shibata
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka City University , Osaka , Japan
| | - Yukiko Minamiyama
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka City University , Osaka , Japan.,Food Hygiene and Environmental Health Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University , Kyoto , Japan
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21
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Sepulveda D, Rojas-Rivera D, Rodríguez DA, Groenendyk J, Köhler A, Lebeaupin C, Ito S, Urra H, Carreras-Sureda A, Hazari Y, Vasseur-Cognet M, Ali MMU, Chevet E, Campos G, Godoy P, Vaisar T, Bailly-Maitre B, Nagata K, Michalak M, Sierralta J, Hetz C. Interactome Screening Identifies the ER Luminal Chaperone Hsp47 as a Regulator of the Unfolded Protein Response Transducer IRE1α. Mol Cell 2018; 69:238-252.e7. [PMID: 29351844 DOI: 10.1016/j.molcel.2017.12.028] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 10/05/2017] [Accepted: 12/27/2017] [Indexed: 01/17/2023]
Abstract
Maintenance of endoplasmic reticulum (ER) proteostasis is controlled by a dynamic signaling network known as the unfolded protein response (UPR). IRE1α is a major UPR transducer, determining cell fate under ER stress. We used an interactome screening to unveil several regulators of the UPR, highlighting the ER chaperone Hsp47 as the major hit. Cellular and biochemical analysis indicated that Hsp47 instigates IRE1α signaling through a physical interaction. Hsp47 directly binds to the ER luminal domain of IRE1α with high affinity, displacing the negative regulator BiP from the complex to facilitate IRE1α oligomerization. The regulation of IRE1α signaling by Hsp47 is evolutionarily conserved as validated using fly and mouse models of ER stress. Hsp47 deficiency sensitized cells and animals to experimental ER stress, revealing the significance of Hsp47 to global proteostasis maintenance. We conclude that Hsp47 adjusts IRE1α signaling by fine-tuning the threshold to engage an adaptive UPR.
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Affiliation(s)
- Denisse Sepulveda
- Biomedical Neuroscience Institute (BNI), Faculty of Medicine, University of Chile, Santiago 8380453, Chile; Center for Geroscience, Brain Health, and Metabolism (GERO), Santiago, Chile; Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, University of Chile, Santiago 8380453, Chile
| | - Diego Rojas-Rivera
- Biomedical Neuroscience Institute (BNI), Faculty of Medicine, University of Chile, Santiago 8380453, Chile; Center for Geroscience, Brain Health, and Metabolism (GERO), Santiago, Chile; Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, University of Chile, Santiago 8380453, Chile
| | - Diego A Rodríguez
- Biomedical Neuroscience Institute (BNI), Faculty of Medicine, University of Chile, Santiago 8380453, Chile; Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, University of Chile, Santiago 8380453, Chile; Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Jody Groenendyk
- Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2S7, Canada
| | - Andres Köhler
- Biomedical Neuroscience Institute (BNI), Faculty of Medicine, University of Chile, Santiago 8380453, Chile; Program of Physiology and Biophysics, Institute of Biomedical Sciences, University of Chile, Santiago 8380453, Chile
| | | | - Shinya Ito
- Department of Molecular Biosciences, Faculty of Life Sciences, Kyoto and Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan
| | - Hery Urra
- Biomedical Neuroscience Institute (BNI), Faculty of Medicine, University of Chile, Santiago 8380453, Chile; Center for Geroscience, Brain Health, and Metabolism (GERO), Santiago, Chile; Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, University of Chile, Santiago 8380453, Chile
| | - Amado Carreras-Sureda
- Biomedical Neuroscience Institute (BNI), Faculty of Medicine, University of Chile, Santiago 8380453, Chile; Center for Geroscience, Brain Health, and Metabolism (GERO), Santiago, Chile; Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, University of Chile, Santiago 8380453, Chile
| | - Younis Hazari
- Biomedical Neuroscience Institute (BNI), Faculty of Medicine, University of Chile, Santiago 8380453, Chile; Center for Geroscience, Brain Health, and Metabolism (GERO), Santiago, Chile; Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, University of Chile, Santiago 8380453, Chile
| | - Mireille Vasseur-Cognet
- Institut d'Ecologie et des Sciences de l'Environnement de Paris, Bondy; Sorbonne Universités, and Institut National de la Santé et de la Recherche Médicale, Paris 7 113, France
| | - Maruf M U Ali
- Department of Life Sciences, Imperial College, London SW7 2AZ, UK
| | - Eric Chevet
- Inserm U1242, Chemistry, Oncogenesis, Stress, & Signaling, University of Rennes 1, F-35000 Rennes, France; Centre de Lutte le Cancer Eugène Marquis, F-35000 Rennes, France
| | - Gisela Campos
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Dortmund 44139, Germany
| | - Patricio Godoy
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Dortmund 44139, Germany
| | - Tomas Vaisar
- Division of Metabolism, Endocrinology and Nutrition, University of Washington School of Medicine, Seattle, WA 98195, USA
| | | | - Kazuhiro Nagata
- Department of Molecular Biosciences, Faculty of Life Sciences, Kyoto and Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan
| | - Marek Michalak
- Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2S7, Canada
| | - Jimena Sierralta
- Biomedical Neuroscience Institute (BNI), Faculty of Medicine, University of Chile, Santiago 8380453, Chile; Program of Physiology and Biophysics, Institute of Biomedical Sciences, University of Chile, Santiago 8380453, Chile
| | - Claudio Hetz
- Biomedical Neuroscience Institute (BNI), Faculty of Medicine, University of Chile, Santiago 8380453, Chile; Center for Geroscience, Brain Health, and Metabolism (GERO), Santiago, Chile; Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, University of Chile, Santiago 8380453, Chile; Buck Institute for Research on Aging, Novato, CA 94945, USA; Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston MA 02115, USA.
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22
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Otsuka M, Shiratori M, Chiba H, Kuronuma K, Sato Y, Niitsu Y, Takahashi H. Treatment of pulmonary fibrosis with siRNA against a collagen-specific chaperone HSP47 in vitamin A-coupled liposomes. Exp Lung Res 2017; 43:271-282. [PMID: 29035148 DOI: 10.1080/01902148.2017.1354946] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Pulmonary fibrosis is a life-threatening pathological state of progressive interstitial lung diseases, such as idiopathic pulmonary fibrosis. Myofibroblasts are known to play a critical role in the pathogenesis of pulmonary fibrosis. This study aimed to evaluate the inhibitory effect of a small interfering RNA (siRNA) on a collagen-specific chaperone heat shock protein 47 (HSP47). The siRNA was preferentially delivered to myofibroblasts in a bleomycin (BLM)-induced pulmonary fibrosis rat model using siRNA against HSP47, encapsulated in a vitamin A-coupled liposome (VA-lip-siRNA HSP47). METHODS AND RESULTS Male Sprague-Dawley rats were treated with an intratracheal injection of BLM or phosphate buffered saline followed by an intravenous injection of VA-lip-siRNA HSP47 three times per week under preventive administration schedules from day 1 to day 21 and therapeutic administration schedules from day 15 to day 35. The expression of HSP47 after the treatment was assessed by immunoblotting. The specific delivery of VA-lip-siRNA HSP47 conjugated with 6'-carboxyfluoresce into myofibroblasts was examined by immunofluorescence staining. The effect of VA-lip-siRNA HSP47 on fibrosis was analyzed by morphological and biochemical methods. Preferential delivery of VA-lip-siRNA HSP47 to myofibroblasts in fibrotic areas in BLM-treated rats was verified by immunofluorescence staining. Treatment of VA-lip-siRNA HSP47 clearly suppressed HSP47 expression and induced apoptosis of myofibroblasts in the lung of BLM-treated rats. Hydroxyproline levels and inflammatory cytokines in the lungs, and the number of inflammatory cells in the bronchial alveolar lavage of BLM-treated rats were significantly suppressed by the treatment. Morphological assessment showed that VA-lip-siRNA HSP47 also significantly improved the morphological pulmonary fibrosis of BLM-treated rats in both preventive and therapeutic schedules. CONCLUSIONS These results suggest that VA-lip-siRNA HSP47 improves pulmonary fibrosis in not only preventive, but also therapeutic schedules, and thus, this drug delivery system should provide a novel therapy for refractory pulmonary fibrosis.
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Affiliation(s)
- Mitsuo Otsuka
- a Department of Respiratory Medicine and Allergology , Sapporo Medical University , Sapporo , Japan
| | - Masanori Shiratori
- a Department of Respiratory Medicine and Allergology , Sapporo Medical University , Sapporo , Japan
| | - Hirofumi Chiba
- a Department of Respiratory Medicine and Allergology , Sapporo Medical University , Sapporo , Japan
| | - Koji Kuronuma
- a Department of Respiratory Medicine and Allergology , Sapporo Medical University , Sapporo , Japan
| | - Yasushi Sato
- b Department of Medical Oncology and Hematology , Sapporo Medical University , Sapporo , Japan
| | - Yoshiro Niitsu
- c Department of Molecular Target Exploration , Sapporo Medical University , Sapporo , Japan
| | - Hiroki Takahashi
- a Department of Respiratory Medicine and Allergology , Sapporo Medical University , Sapporo , Japan
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Abstract
Skeletal deformity and bone fragility are the hallmarks of the brittle bone dysplasia osteogenesis imperfecta. The diagnosis of osteogenesis imperfecta usually depends on family history and clinical presentation characterized by a fracture (or fractures) during the prenatal period, at birth or in early childhood; genetic tests can confirm diagnosis. Osteogenesis imperfecta is caused by dominant autosomal mutations in the type I collagen coding genes (COL1A1 and COL1A2) in about 85% of individuals, affecting collagen quantity or structure. In the past decade, (mostly) recessive, dominant and X-linked defects in a wide variety of genes encoding proteins involved in type I collagen synthesis, processing, secretion and post-translational modification, as well as in proteins that regulate the differentiation and activity of bone-forming cells have been shown to cause osteogenesis imperfecta. The large number of causative genes has complicated the classic classification of the disease, and although a new genetic classification system is widely used, it is still debated. Phenotypic manifestations in many organs, in addition to bone, are reported, such as abnormalities in the cardiovascular and pulmonary systems, skin fragility, muscle weakness, hearing loss and dentinogenesis imperfecta. Management involves surgical and medical treatment of skeletal abnormalities, and treatment of other complications. More innovative approaches based on gene and cell therapy, and signalling pathway alterations, are under investigation.
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24
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Baum R, Sharma S, Organ JM, Jakobs C, Hornung V, Burr DB, Marshak-Rothstein A, Fitzgerald KA, Gravallese EM. STING Contributes to Abnormal Bone Formation Induced by Deficiency of DNase II in Mice. Arthritis Rheumatol 2017; 69:460-471. [PMID: 27740718 DOI: 10.1002/art.39863] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 09/06/2016] [Indexed: 01/05/2023]
Abstract
OBJECTIVE Cytosolic DNA sensors detect microbial DNA and promote type I interferon (IFN) and proinflammatory cytokine production through the adaptor stimulator of IFN genes (STING) to resolve infection. Endogenous DNA also engages the STING pathway, contributing to autoimmune disease. This study sought to identify the role of STING in regulating bone formation and to define the bone phenotype and its pathophysiologic mechanisms in arthritic mice double deficient in DNase II and IFN-α/β/ω receptor (IFNAR) (DNase II-/- /IFNAR-/- double-knockout [DKO] mice) compared with controls. METHODS Bone parameters were evaluated by micro-computed tomography and histomorphometry in DKO mice in comparison with mice triple deficient in STING, DNase II, and IFNAR and control mice. Cell culture techniques were employed to determine the parameters of osteoclast and osteoblast differentiation and function. NanoString and Affymetrix array analyses were performed to identify factors promoting ectopic bone formation. RESULTS Despite the expression of proinflammatory cytokines that would be expected to induce bone loss in the skeleton of DKO mice, the results, paradoxically, demonstrated an accumulation of bone in the long bones and spleens, sites of erythropoiesis and robust DNA accrual. In addition, factors promoting osteoblast recruitment and function were induced. Deficiency of STING significantly inhibited bone accrual. CONCLUSION These data reveal a novel role for cytosolic DNA sensor pathways in bone in the setting of autoimmune disease. The results demonstrate the requirement of an intact STING pathway for bone formation in this model, a finding that may have relevance to autoimmune diseases in which DNA plays a pathogenic role. Identification of pathways linking innate immunity and bone could reveal novel targets for the treatment of bone abnormalities in human autoimmune diseases.
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Affiliation(s)
- Rebecca Baum
- University of Massachusetts Medical School, Worcester
| | - Shruti Sharma
- University of Massachusetts Medical School, Worcester
| | | | | | - Veit Hornung
- University Hospital Bonn, Bonn, Germany, and Ludwig-Maximilians-Universität, Munich, Germany
| | - David B Burr
- Indiana University School of Medicine, Indianapolis
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25
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Hughes A, Oxford AE, Tawara K, Jorcyk CL, Oxford JT. Endoplasmic Reticulum Stress and Unfolded Protein Response in Cartilage Pathophysiology; Contributing Factors to Apoptosis and Osteoarthritis. Int J Mol Sci 2017; 18:ijms18030665. [PMID: 28335520 PMCID: PMC5372677 DOI: 10.3390/ijms18030665] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 03/15/2017] [Accepted: 03/16/2017] [Indexed: 12/11/2022] Open
Abstract
Chondrocytes of the growth plate undergo apoptosis during the process of endochondral ossification, as well as during the progression of osteoarthritis. Although the regulation of this process is not completely understood, alterations in the precisely orchestrated programmed cell death during development can have catastrophic results, as exemplified by several chondrodystrophies which are frequently accompanied by early onset osteoarthritis. Understanding the mechanisms that underlie chondrocyte apoptosis during endochondral ossification in the growth plate has the potential to impact the development of therapeutic applications for chondrodystrophies and associated early onset osteoarthritis. In recent years, several chondrodysplasias and collagenopathies have been recognized as protein-folding diseases that lead to endoplasmic reticulum stress, endoplasmic reticulum associated degradation, and the unfolded protein response. Under conditions of prolonged endoplasmic reticulum stress in which the protein folding load outweighs the folding capacity of the endoplasmic reticulum, cellular dysfunction and death often occur. However, unfolded protein response (UPR) signaling is also required for the normal maturation of chondrocytes and osteoblasts. Understanding how UPR signaling may contribute to cartilage pathophysiology is an essential step toward therapeutic modulation of skeletal disorders that lead to osteoarthritis.
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Affiliation(s)
- Alexandria Hughes
- Department of Biological Sciences, Boise State University, Boise, ID 83725, USA.
- Biomolecular Research Center, Boise State University, Boise, ID 83725, USA.
| | - Alexandra E Oxford
- Department of Biological Sciences, Boise State University, Boise, ID 83725, USA.
- Biomolecular Research Center, Boise State University, Boise, ID 83725, USA.
| | - Ken Tawara
- Biomolecular Sciences Graduate Program, Boise State University, Boise, ID 83725, USA.
- Biomolecular Research Center, Boise State University, Boise, ID 83725, USA.
| | - Cheryl L Jorcyk
- Department of Biological Sciences, Boise State University, Boise, ID 83725, USA.
- Biomolecular Sciences Graduate Program, Boise State University, Boise, ID 83725, USA.
- Biomolecular Research Center, Boise State University, Boise, ID 83725, USA.
| | - Julia Thom Oxford
- Department of Biological Sciences, Boise State University, Boise, ID 83725, USA.
- Biomolecular Sciences Graduate Program, Boise State University, Boise, ID 83725, USA.
- Biomolecular Research Center, Boise State University, Boise, ID 83725, USA.
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Martinek N, Shahab J, Sodek J, Ringuette M. Is SPARC an Evolutionarily Conserved Collagen Chaperone? J Dent Res 2016; 86:296-305. [PMID: 17384023 DOI: 10.1177/154405910708600402] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The construction of collagen fiber scaffolds, which provide the structural integrity of the extracellular matrix of connective tissues and basement membranes, is initiated by a complex mechanism of protein-folding, whereby pro-collagen α-chains are assembled into triple-helical procollagen molecules. This unique assembly of the procollagen molecules is guided by several endoplasmic reticulum resident molecular chaperones, including HSP47, which dissociates from procollagen molecules prior to their transport from the endoplasmic reticulum into the cis-Golgi network. SPARC, an evolutionarily conserved collagen-binding glycoprotein, which is frequently co-expressed with collagen in rapidly remodeling tissues, binds to the triple-helical region of procollagen molecules. Analysis of data from genome projects indicates that specific amino acids and sequences in SPARC that are critical for collagen binding are evolutionarily conserved in organisms ranging from nematodes to mammals. Studies of invertebrates, which do not encode HSP47, indicate that SPARC expression is required for the deposition of collagen IV in basal lamina during embryonic development. In mammals, defects in collagen deposition have been observed in normal and wound-healing tissues in the absence of SPARC expression. Based on these and other observations, we propose that intracellular SPARC acts as a collagen molecular chaperone in the endoplasmic reticulum, and that in higher organisms, SPARC acts in concert with HSP47 to ensure that only correctly folded procollagen molecules exit the endoplasmic reticulum. In contrast to HSP47, SPARC is transported from the endoplasmic reticulum through the Golgi network and into secretory vesicles for exocytosis at the plasma membrane. Hence, SPARC may also play a role in regulating post-endoplasmic reticulum events that promote collagen fibrillogenesis.
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Affiliation(s)
- N Martinek
- Department of Cell and Systems Biology, University of Toronto, 25 Harbord Street, Toronto, ON, Canada M5S 3G5
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27
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Ito S, Nagata K. Biology of Hsp47 (Serpin H1), a collagen-specific molecular chaperone. Semin Cell Dev Biol 2016; 62:142-151. [PMID: 27838364 DOI: 10.1016/j.semcdb.2016.11.005] [Citation(s) in RCA: 153] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 11/07/2016] [Accepted: 11/07/2016] [Indexed: 12/31/2022]
Abstract
Hsp47, a collagen-specific molecular chaperone that localizes in the endoplasmic reticulum (ER), is indispensable for molecular maturation of collagen. Hsp47, which is encoded by the SERPINH1 gene, belongs to the serpin family and has the serpin fold; however, it has no serine protease inhibitory activity. Hsp47 transiently binds to procollagen in the ER, dissociates in the cis-Golgi or ER-Golgi intermediate compartment (ERGIC) in a pH-dependent manner, and is then transported back to the ER via its RDEL retention sequence. Hsp47 recognizes collagenous (Gly-Xaa-Arg) repeats on triple-helical procollagen and can prevent local unfolding and/or aggregate formation of procollagen. Gene disruption of Hsp47 in mice causes embryonic lethality due to impairments in basement membrane and collagen fibril formation. In Hsp47-knockout cells, the type I collagen triple helix forms abnormally, resulting in thin and frequently branched fibrils. Secretion of type I collagens is slow and plausible in making aggregates of procollagens in the ER of hsp47-knocked out fibroblasts, which are ultimately degraded by autophagy. Mutations in Hsp47 are causally associated with osteogenesis imperfecta. Expression of Hsp47 is strongly correlated with expression of collagens in multiple types of cells and tissues. Therefore, Hsp47 represents a promising target for treatment of collagen-related disorders, including fibrosis of the liver, lung, and other organs.
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Affiliation(s)
- Shinya Ito
- Department of Molecular Biosciences, Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan; CREST, Japan Science and Technology Agency, Kyoto Sangyo University, Kyoto 603-8555, Japan
| | - Kazuhiro Nagata
- Department of Molecular Biosciences, Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan; CREST, Japan Science and Technology Agency, Kyoto Sangyo University, Kyoto 603-8555, Japan.
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Enderli TA, Burtch SR, Templet JN, Carriero A. Animal models of osteogenesis imperfecta: applications in clinical research. Orthop Res Rev 2016; 8:41-55. [PMID: 30774469 PMCID: PMC6209373 DOI: 10.2147/orr.s85198] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Osteogenesis imperfecta (OI), commonly known as brittle bone disease, is a genetic disease characterized by extreme bone fragility and consequent skeletal deformities. This connective tissue disorder is caused by mutations in the quality and quantity of the collagen that in turn affect the overall mechanical integrity of the bone, increasing its vulnerability to fracture. Animal models of the disease have played a critical role in the understanding of the pathology and causes of OI and in the investigation of a broad range of clinical therapies for the disease. Currently, at least 20 animal models have been officially recognized to represent the phenotype and biochemistry of the 17 different types of OI in humans. These include mice, dogs, and fish. Here, we describe each of the animal models and the type of OI they represent, and present their application in clinical research for treatments of OI, such as drug therapies (ie, bisphosphonates and sclerostin) and mechanical (ie, vibrational) loading. In the future, different dosages and lengths of treatment need to be further investigated on different animal models of OI using potentially promising treatments, such as cellular and chaperone therapies. A combination of therapies may also offer a viable treatment regime to improve bone quality and reduce fragility in animals before being introduced into clinical trials for OI patients.
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Affiliation(s)
- Tanya A Enderli
- Department of Biomedical Engineering, Florida Institute of Technology, Melbourne, FL, USA,
| | - Stephanie R Burtch
- Department of Biomedical Engineering, Florida Institute of Technology, Melbourne, FL, USA,
| | - Jara N Templet
- Department of Biomedical Engineering, Florida Institute of Technology, Melbourne, FL, USA,
| | - Alessandra Carriero
- Department of Biomedical Engineering, Florida Institute of Technology, Melbourne, FL, USA,
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29
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Ito S, Nagata K. Mutants of collagen-specific molecular chaperone Hsp47 causing osteogenesis imperfecta are structurally unstable with weak binding affinity to collagen. Biochem Biophys Res Commun 2016; 469:437-42. [DOI: 10.1016/j.bbrc.2015.12.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 12/08/2015] [Indexed: 01/10/2023]
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Walton RD, Jones SA, Rostron KA, Kayani AC, Close GL, McArdle A, Lancaster MK. Interactions of Short-Term and Chronic Treadmill Training With Aging of the Left Ventricle of the Heart. J Gerontol A Biol Sci Med Sci 2015; 71:1005-13. [PMID: 26248561 PMCID: PMC4945880 DOI: 10.1093/gerona/glv093] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 05/22/2015] [Indexed: 02/06/2023] Open
Abstract
With aging, there is a decline in cardiac function accompanying increasing risk of arrhythmias. These effects are likely to be mechanistically associated with age-associated changes in calcium regulation within cardiac myocytes. Previous studies suggest that lifelong exercise can potentially reduce age-associated changes in the heart. Although exercise itself is associated with changes in cardiac function, little is known about the interactions of aging and exercise with respect to myocyte calcium regulation. To investigate this, adult (12 months) and old (24 months) C57/Bl6 mice were trained using moderate-intensity treadmill running. In response to 10 weeks’ training, comparable cardiac hypertrophic responses were observed, although aging independently associated with additional cardiac hypertrophy. Old animals also showed increased L- and T-type calcium channels, the sodium–calcium exchange, sarcoendoplasmic reticulum calcium ATPase, and collagen (by 50%, 92%, 66%, 88%, and 113% respectively). Short-term exercise training increased D-type and T-type calcium channels in old animals only, whereas an increase in sodium–calcium exchange was seen only in adult animals. Long-term (12 months) training generally opposed the effects of aging. Significant hypertrophy remained in long-term trained old animals, but levels of sarcoendoplasmic reticulum calcium ATPase, sodium–calcium exchange, and collagen were not significantly different from those found in the adult trained animals.
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Affiliation(s)
| | | | | | - Anna C Kayani
- Institute of Ageing & Chronic Disease, Faculty of Health and Life Sciences, University of Liverpool
| | - Graeme L Close
- Institute of Ageing & Chronic Disease, Faculty of Health and Life Sciences, University of Liverpool
| | - Anne McArdle
- Institute of Ageing & Chronic Disease, Faculty of Health and Life Sciences, University of Liverpool
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Burmann BM, Hiller S. Chaperones and chaperone-substrate complexes: Dynamic playgrounds for NMR spectroscopists. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2015; 86-87:41-64. [PMID: 25919198 DOI: 10.1016/j.pnmrs.2015.02.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 02/19/2015] [Accepted: 02/19/2015] [Indexed: 05/20/2023]
Abstract
The majority of proteins depend on a well-defined three-dimensional structure to obtain their functionality. In the cellular environment, the process of protein folding is guided by molecular chaperones to avoid misfolding, aggregation, and the generation of toxic species. To this end, living cells contain complex networks of molecular chaperones, which interact with substrate polypeptides by a multitude of different functionalities: transport them towards a target location, help them fold, unfold misfolded species, resolve aggregates, or deliver them towards a proteolysis machinery. Despite the availability of high-resolution crystal structures of many important chaperones in their substrate-free apo forms, structural information about how substrates are bound by chaperones and how they are protected from misfolding and aggregation is very sparse. This lack of information arises from the highly dynamic nature of chaperone-substrate complexes, which so far has largely hindered their crystallization. This highly dynamic nature makes chaperone-substrate complexes good targets for NMR spectroscopy. Here, we review the results achieved by NMR spectroscopy to understand chaperone function in general and details of chaperone-substrate interactions in particular. We assess the information content and applicability of different NMR techniques for the characterization of chaperones and chaperone-substrate complexes. Finally, we highlight three recent studies, which have provided structural descriptions of chaperone-substrate complexes at atomic resolution.
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Affiliation(s)
- Björn M Burmann
- Biozentrum, University of Basel, Klingelbergstrasse 70, 4056 Basel, Switzerland
| | - Sebastian Hiller
- Biozentrum, University of Basel, Klingelbergstrasse 70, 4056 Basel, Switzerland.
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Kawasaki K, Ushioda R, Ito S, Ikeda K, Masago Y, Nagata K. Deletion of the collagen-specific molecular chaperone Hsp47 causes endoplasmic reticulum stress-mediated apoptosis of hepatic stellate cells. J Biol Chem 2014; 290:3639-46. [PMID: 25525267 DOI: 10.1074/jbc.m114.592139] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Chronic liver injury, often caused by alcoholism and viral hepatitis, causes liver fibrosis via the induction of collagen production. In liver fibrosis, hepatic stellate cells (HSCs) are activated and transform into myofibroblasts, which actively produce and secrete collagen into the extracellular matrix. Hsp47 (heat shock protein 47) is a collagen-specific molecular chaperone that is essential for the maturation and secretion of collagen. Here, we used the Cre-LoxP system to disrupt the Hsp47 gene in isolated HSCs from Hsp47 floxed mice. Immature type I procollagen accumulated and partially aggregated in Hsp47-KO HSCs. This accumulation was augmented when autophagy was inhibited, which induced expression of the endoplasmic reticulum (ER) stress-inducible proteins BiP (immunoglobulin heavy chain-binding protein) and Grp94 (94-kDa glucose-regulated protein). The inhibition of autophagy in Hsp47-KO HSCs also induced CHOP (CCAAT/enhancer-binding protein homologous protein), which is an ER stress-induced transcription factor responsible for apoptosis. These data suggest that apoptosis is induced through ER stress by procollagen accumulation in Hsp47-KO HSCs when autophagy is inhibited. Thus, Hsp47 could be a promising therapeutic target in liver fibrosis.
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Affiliation(s)
- Kunito Kawasaki
- From the Department of Molecular Biosciences, Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan, the Department of Molecular and Cellular Biology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Ryo Ushioda
- From the Department of Molecular Biosciences, Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan,
| | - Shinya Ito
- From the Department of Molecular Biosciences, Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan, the Department of Molecular and Cellular Biology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Kazuo Ikeda
- the Department of Anatomy and Regenerative Biology, Graduate School of Medicine, Osaka City University, Asahi-mati, Abeno-ku, Osaka 545-8585, Japan, and
| | - Yusaku Masago
- From the Department of Molecular Biosciences, Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan, the Department of Molecular and Cellular Biology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Kazuhiro Nagata
- From the Department of Molecular Biosciences, Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan, CREST, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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Duran I, Nevarez L, Sarukhanov A, Wu S, Lee K, Krejci P, Weis M, Eyre D, Krakow D, Cohn DH. HSP47 and FKBP65 cooperate in the synthesis of type I procollagen. Hum Mol Genet 2014; 24:1918-28. [PMID: 25510505 DOI: 10.1093/hmg/ddu608] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Osteogenesis imperfecta (OI) is a genetic disorder that results in low bone mineral density and brittle bones. Most cases result from dominant mutations in the type I procollagen genes, but mutations in a growing number of genes have been identified that produce autosomal recessive forms of the disease. Among these include mutations in the genes SERPINH1 and FKBP10, which encode the type I procollagen chaperones HSP47 and FKBP65, respectively, and predominantly produce a moderately severe form of OI. Little is known about the biochemical consequences of the mutations and how they produce OI. We have identified a new OI mutation in SERPINH1 that results in destabilization and mislocalization of HSP47 and secondarily has similar effects on FKBP65. We found evidence that HSP47 and FKBP65 act cooperatively during posttranslational maturation of type I procollagen and that FKBP65 and HSP47 but fail to properly interact in mutant HSP47 cells. These results thus reveal a common cellular pathway in cases of OI caused by HSP47 and FKBP65 deficiency.
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Affiliation(s)
| | | | | | - Sulin Wu
- Department of Orthopaedic Surgery
| | - Katrina Lee
- Department of Molecular, Cell, and Developmental Biology, University of California at Los Angeles, Los Angeles, CA 90095, USA
| | - Pavel Krejci
- Department of Pediatrics, David Geffen School of Medicine at the University of California at Los Angeles, Los Angeles, CA 90095, USA, Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Maryann Weis
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA, USA
| | - David Eyre
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA, USA
| | - Deborah Krakow
- Department of Orthopaedic Surgery, Department of Human Genetics, Department of Obstetrics and Gynecology and
| | - Daniel H Cohn
- Department of Orthopaedic Surgery, Department of Molecular, Cell, and Developmental Biology, University of California at Los Angeles, Los Angeles, CA 90095, USA
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Edogawa S, Sakai A, Inoue T, Harada S, Takeuchi T, Umegaki E, Hayashi H, Higuchi K. Down-regulation of collagen I biosynthesis in intestinal epithelial cells exposed to indomethacin: a comparative proteome analysis. J Proteomics 2014; 103:35-46. [PMID: 24698663 DOI: 10.1016/j.jprot.2014.03.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 03/07/2014] [Accepted: 03/19/2014] [Indexed: 01/16/2023]
Abstract
UNLABELLED In contrast to accumulated knowledge about gastroduodenal injury associated with nonsteroidal antiinflammatory drugs (NSAIDs) such as indomethacin, small intestinal mucosal injuries have been noticed only recently, and the precise mechanism remains to be elucidated. To clarify the mechanism, we performed 2-DE on IEC-6 rat normal intestinal cells that were treated with indomethacin (200μΜ, 24h) or a vehicle control and identified 18 up-regulated and 8 down-regulated proteins through MALDI-TOF/TOF mass spectrometry. Among these proteins, collagen I and proteins involved in collagen I biosynthesis and maturation, including prolyl 4-hydroxylase subunit α1, protein disulfide isomerase A3 (PDIA3), calreticulin, and endoplasmin, were all down-regulated by indomethacin. Immunohistochemical staining of the intestinal mucosa of indomethacin-administered rats showed a decrease of collagen I on the apical surface of intestinal cells. Cell death induced by indomethacin was prominently suppressed when IEC-6 cells were grown on collagen I-coated plates. cis-4-Hydroxy-l-proline, a proline analog that inhibits collagen synthesis, depressed IEC-6 cell viability in a concentration-dependent manner. Cell death was also induced by short interfering RNA knockdown of endogenous collagen I in IEC-6 cells. In conclusion, by comparative proteome analysis, we identified down-regulation of collagen I as an important mechanism in NSAID-induced intestinal injury. BIOLOGICAL SIGNIFICANCE Small intestinal lesions induced by NSAIDs are of great concern in clinical settings. Various hypotheses have been proposed for the origin of these inflammatory responses, such as reduction in the blood flow, intestinal hypermotility, abnormal intestinal mucosal permeability, mitochondrial dysfunction, and reactive oxygen species, many of which are related to the inhibition of prostaglandin synthesis. However, the precise mechanism is yet to be known. The cellular process of the lesions must involve up- and down-regulations of a large number of proteins and complex interactions between them. To elucidate it, global and systematic identification of the proteins in intestinal cells affected by NSAIDs is essential. We found that the proteins exhibiting reduced expression by indomethacin treatment are collagen I and the proteins involved in collagen I synthesis and maturation. Consistent with this, immunohistochemical analysis showed that the indomethacin-treated rat intestinal mucosal cells exhibits decreased collagen I expression on its apical surface. Furthermore, the cell-protective effect of collagen on intestinal mucosal cells was demonstrated by the use of a collagen-synthesis inhibitor, short interfering RNA (siRNA) knockdown of endogenous collagen I, and cell cultivation on collagen I-coated plates versus uncoated plates. These results give important information on the role of the collagen synthesis in intestinal mucosa in the mechanism of NSAID-induced small intestinal lesions.
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Affiliation(s)
- Shoko Edogawa
- 2nd Department of Internal Medicine, Osaka Medical College, Osaka, Japan.
| | - Akiko Sakai
- Department of Chemistry, Osaka Medical College, Osaka, Japan
| | - Takuya Inoue
- 2nd Department of Internal Medicine, Osaka Medical College, Osaka, Japan
| | - Satoshi Harada
- 2nd Department of Internal Medicine, Osaka Medical College, Osaka, Japan
| | - Toshihisa Takeuchi
- 2nd Department of Internal Medicine, Osaka Medical College, Osaka, Japan
| | - Eiji Umegaki
- 2nd Department of Internal Medicine, Osaka Medical College, Osaka, Japan
| | | | - Kazuhide Higuchi
- 2nd Department of Internal Medicine, Osaka Medical College, Osaka, Japan
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Lee R, Reese C, Bonner M, Tourkina E, Hajdu Z, Riemer EC, Silver RM, Visconti RP, Hoffman S. Bleomycin delivery by osmotic minipump: similarity to human scleroderma interstitial lung disease. Am J Physiol Lung Cell Mol Physiol 2014; 306:L736-48. [PMID: 24583879 DOI: 10.1152/ajplung.00210.2013] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The interstitial lung diseases (ILD) include a large number of chronic, progressive, irreversible respiratory disorders involving pulmonary fibrosis, the most common of which are idiopathic pulmonary fibrosis and scleroderma lung disease (SSc ILD). Because bleomycin causes lung fibrosis when used in cancer chemotherapy, it is used to model human ILD in rodents. In most studies, bleomycin has been delivered directly into the lung by intratracheal or intraoral administration. Here we have compared the effects in mice of bleomycin delivered directly into the lungs (direct model) or systemically using osmotic minipumps (pump model) to determine which more closely resembles human ILD. The pump model is more similar to human SSc ILD in that: 1) lung injury/fibrosis is limited to the subpleural portion of the lung in the pump model and in SSc ILD, whereas the entire lung is affected in the direct model; 2) conversely, there is massive inflammation throughout the lung in the direct model, whereas inflammation is limited in the pump model and in SSc ILD; 3) hypertrophic type II alveolar epithelial cells are present at high levels in SSc ILD and in the pump model but not in the direct model; and 4) lung fibrosis is accompanied by dermal fibrosis. The pump model is also move convenient and humane than the direct model because there is less weight loss and mortality.
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Affiliation(s)
- Rebecca Lee
- Division of Rheumatology and Immunology, Dept. of Medicine, Medical Univ. of South Carolina, STB 233, 114 Doughty St., Charleston, SC 29425.
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A molecular ensemble in the rER for procollagen maturation. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2013; 1833:2479-91. [DOI: 10.1016/j.bbamcr.2013.04.008] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 04/06/2013] [Accepted: 04/08/2013] [Indexed: 01/18/2023]
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Heat shock transcription factor 1-deficiency attenuates overloading-associated hypertrophy of mouse soleus muscle. PLoS One 2013; 8:e77788. [PMID: 24167582 PMCID: PMC3805596 DOI: 10.1371/journal.pone.0077788] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 09/11/2013] [Indexed: 02/08/2023] Open
Abstract
Hypertrophic stimuli, such as mechanical stress and overloading, induce stress response, which is mediated by heat shock transcription factor 1 (HSF1), and up-regulate heat shock proteins (HSPs) in mammalian skeletal muscles. Therefore, HSF1-associated stress response may play a key role in loading-associated skeletal muscle hypertrophy. The purpose of this study was to investigate the effects of HSF1-deficiency on skeletal muscle hypertrophy caused by overloading. Functional overloading on the left soleus was performed by cutting the distal tendons of gastrocnemius and plantaris muscles for 4 weeks. The right muscle served as the control. Soleus muscles from both hindlimbs were dissected 2 and 4 weeks after the operation. Hypertrophy of soleus muscle in HSF1-null mice was partially inhibited, compared with that in wild-type (C57BL/6J) mice. Absence of HSF1 partially attenuated the increase of muscle wet weight and fiber cross-sectional area of overloaded soleus muscle. Population of Pax7-positive muscle satellite cells in HSF1-null mice was significantly less than that in wild-type mice following 2 weeks of overloading (p<0.05). Significant up-regulations of interleukin (IL)-1β and tumor necrosis factor mRNAs were observed in HSF1-null, but not in wild-type, mice following 2 weeks of overloading. Overloading-related increases of IL-6 and AFT3 mRNA expressions seen after 2 weeks of overloading tended to decrease after 4 weeks in both types of mice. In HSF1-null mice, however, the significant overloading-related increase in the expression of IL-6, not ATF3, mRNA was noted even at 4th week. Inhibition of muscle hypertrophy might be attributed to the greater and prolonged enhancement of IL-6 expression. HSF1 and/or HSF1-mediated stress response may, in part, play a key role in loading-induced skeletal muscle hypertrophy.
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Abstract
Accumulative evidence demonstrates the crucial role of evolutionary conserved Toll-like receptors (TLRs) in identifying microbial or viral compounds. TLRs are also able to recognise endogenous molecules which are released upon cell damage or stress and have been shown to play a key role in numerous autoimmune diseases including systemic sclerosis (SSc). A classic feature of SSc, is vascular injury manifested as Raynaud's phenomenon and ischaemia of the skin, resulting in the release of endogenous TLR ligands during inflammation and local tissue damage. These locally released TLR ligands bind TLRs possibly complexed to autoantibodies, and initiate intracellular signalling pathways and may be one of the mechanisms that initiate and drive autoimmunity and subsequent fibrosis. Activation of the immune system results in interferon (IFN) sensitive gene transcription. There is also an IFN gene signature in SSc peripheral blood. TLRs may represent the link between immune activation, common in SSc, and tissue fibrosis. Therefore, a better understanding of the mechanisms of TLR-mediated pathogenesis and therapies targeting individual TLRs, may provide a more specific approach of treating multi-systemic autoimmune diseases. This review aims to integrate the current knowledge of TLR function in the autoimmune disorders with particular emphasis on SSc. We suggest the TLR system as a new therapeutic target.
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The endoplasmic reticulum-resident chaperone heat shock protein 47 protects the Golgi apparatus from the effects of O-glycosylation inhibition. PLoS One 2013; 8:e69732. [PMID: 23922785 PMCID: PMC3726774 DOI: 10.1371/journal.pone.0069732] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 06/11/2013] [Indexed: 02/07/2023] Open
Abstract
The Golgi apparatus is important for the transport of secretory cargo. Glycosylation is a major post-translational event. Recognition of O-glycans on proteins is necessary for glycoprotein trafficking. In this study, specific inhibition of O-glycosylation (Golgi stress) induced the expression of endoplasmic reticulum (ER)-resident heat shock protein (HSP) 47 in NIH3T3 cells, although cell death was not induced by Golgi stress alone. When HSP47 expression was downregulated by siRNA, inhibition of O-glycosylation caused cell death. Three days after the induction of Golgi stress, the Golgi apparatus was disassembled, many vacuoles appeared near the Golgi apparatus and extended into the cytoplasm, the nuclei had split, and cell death assay-positive cells appeared. Six hours after the induction of Golgi stress, HSP47-knockdown cells exhibited increased cleavage of Golgi-resident caspase-2. Furthermore, activation of mitochondrial caspase-9 and ER-resident unfolded protein response (UPR)-related molecules and efflux of cytochrome c from the mitochondria to the cytoplasm was observed in HSP47-knockdown cells 24 h after the induction of Golgi stress. These findings indicate that (i) the ER-resident chaperon HSP47 protected cells from Golgi stress, and (ii) Golgi stress-induced cell death caused by the inhibition of HSP47 expression resulted from caspase-2 activation in the Golgi apparatus, extending to the ER and mitochondria.
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Park SJ, Sohn HY, Park SI. TRAIL regulates collagen production through HSF1-dependent Hsp47 expression in activated hepatic stellate cells. Cell Signal 2013; 25:1635-43. [DOI: 10.1016/j.cellsig.2013.04.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 03/22/2013] [Accepted: 04/08/2013] [Indexed: 02/08/2023]
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Ishikawa T, Okada T, Ishikawa-Fujiwara T, Todo T, Kamei Y, Shigenobu S, Tanaka M, Saito TL, Yoshimura J, Morishita S, Toyoda A, Sakaki Y, Taniguchi Y, Takeda S, Mori K. ATF6α/β-mediated adjustment of ER chaperone levels is essential for development of the notochord in medaka fish. Mol Biol Cell 2013; 24:1387-95. [PMID: 23447699 PMCID: PMC3639050 DOI: 10.1091/mbc.e12-11-0830] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
ATF6α and ATF6β are membrane-bound transcription factors activated by regulated intramembrane proteolysis in response to endoplasmic reticulum (ER) stress to induce various ER quality control proteins. ATF6α- and ATF6β single-knockout mice develop normally, but ATF6α/β double knockout causes embryonic lethality, the reason for which is unknown. Here we show in medaka fish that ATF6α is primarily responsible for transcriptional induction of the major ER chaperone BiP and that ATF6α/β double knockout, but not ATF6α- or ATF6β single knockout, causes embryonic lethality, as in mice. Analyses of ER stress reporters reveal that ER stress occurs physiologically during medaka early embryonic development, particularly in the brain, otic vesicle, and notochord, resulting in ATF6α- and ATF6β-mediated induction of BiP, and that knockdown of the α1 chain of type VIII collagen reduces such ER stress. The absence of transcriptional induction of several ER chaperones in ATF6α/β double knockout causes more profound ER stress and impaired notochord development, which is partially rescued by overexpression of BiP. Thus ATF6α/β-mediated adjustment of chaperone levels to increased demands in the ER is essential for development of the notochord, which synthesizes and secretes large amounts of extracellular matrix proteins to serve as the body axis before formation of the vertebra.
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Affiliation(s)
- Tokiro Ishikawa
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
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Li Y, Ho D, Meng H, Chan TR, An B, Yu H, Brodsky B, Jun AS, Michael Yu S. Direct detection of collagenous proteins by fluorescently labeled collagen mimetic peptides. Bioconjug Chem 2013; 24:9-16. [PMID: 23253177 DOI: 10.1021/bc3005842] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Although fibrous collagens are major structural components of extracellular matrix in mammals, collagen overproduction is associated with many human diseases including cancers and fibrosis. Collagen is typically identified in biomedical research by Western blot and immunohistochemistry; however, anticollagen antibodies employed in these analyses are difficult to prepare and their affinities to collagen can diminish if collagen becomes denatured during analyses. Previously, we discovered that single-stranded collagen mimetic peptides [CMPs, sequence: (GlyProHyp)(9)] can bind to denatured collagen chains by triple helix hybridization. Here, we present collagen-specific staining methods using simple CMPs conjugated to common fluorophores (e.g., carboxyfluorescein), which allow direct detection of collagens and collagen-like proteins in SDS-PAGE and in various mammalian tissue sections. By directly staining SDS-PAGE gels with fluorescently labeled CMPs, both intact (type I, II, and IV) and MMP-1 cleaved collagen (type I) chains as well as complement factor C1q were detected. Collagen bands containing as little as 5 ng were optically visualized, while no staining was observed for fibronectin, laminin, and a collection of proteins from mammalian cell lysate. The CMP was unable to stain collagen-like bacterial protein, which contains numerous charged amino acids that are believed to stabilize triple helix in place of Hyp. We also show that fluorescently labeled CMPs can specifically visualize collagens in fixed tissue sections (e.g., skin, cornea, and bone) more effectively than anticollagen I antibody, and allow facile identification of pathologic conditions in fibrotic liver tissues.
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Affiliation(s)
- Yang Li
- Department of Chemistry, Johns Hopkins University, Baltimore, MD 21218, USA
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Park JH, Hwang I, Hwang SH, Han H, Ha H. Human umbilical cord blood-derived mesenchymal stem cells prevent diabetic renal injury through paracrine action. Diabetes Res Clin Pract 2012; 98:465-73. [PMID: 23026513 DOI: 10.1016/j.diabres.2012.09.034] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 09/10/2012] [Indexed: 12/16/2022]
Abstract
AIMS The present study examined renoprotective effect of human umbilical cord blood-derived mesenchymal stem cells (hUCB-MSC) in diabetes. NRK-52E cells were utilized to determine the paracrine effect of hUCB-MSC. METHODS hUCB was harvested with the mother's consent. MSC obtained from the hUCB were injected through the tail vein. Growth arrested and synchronized NRK-52E cells were stimulated with transforming growth factor-β1 (TGF-β1) in the presence of hUCB-MSC conditioned media. RESULTS At 4 weeks after the streptozotocin (STZ) injection, diabetic rats showed significantly increased urinary protein excretion, renal and glomerular hypertrophy, fractional mesangial area, renal expression of TGF-β1 and α-smooth muscle actin, and collagen accumulation but decreased renal E-cadherin and bone morphogenic protein-7 expression, confirming diabetic renal injury. hUCB-MSC effectively prevented diabetic renal injury except renal and glomerular hypertrophy without a significant effect on blood glucose. CM-DiI-labeled hUCB-MSC and immunostaining of PKcs, a human nuclei antigen, confirmed a few engraftment of hUCB-MSC in diabetic kidneys. hUCB-MSC conditioned media inhibited TGF-β1-induced extracellular matrix upregulation and epithelial-to-mesenchymal transition in NRK-52E cells in a concentration-dependent manner. CONCLUSIONS These results demonstrate the renoprotective effect of hUCB-MSC in STZ-induced diabetic rats possibly through secretion of humoral factors and suggest hUCB-MSC as a possible treatment modality for diabetic renal injury.
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Affiliation(s)
- Jong Hee Park
- Department of Bioinspired Science, Division of Life and Pharmaceutical Science, College of Pharmacy, Ewha Womans University, Seoul, Republic of Korea
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Yagi-Utsumi M, Yoshikawa S, Yamaguchi Y, Nishi Y, Kurimoto E, Ishida Y, Homma T, Hoseki J, Nishikawa Y, Koide T, Nagata K, Kato K. NMR and mutational identification of the collagen-binding site of the chaperone Hsp47. PLoS One 2012; 7:e45930. [PMID: 23049894 PMCID: PMC3457968 DOI: 10.1371/journal.pone.0045930] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Accepted: 08/23/2012] [Indexed: 11/25/2022] Open
Abstract
Heat shock protein 47 (Hsp47) acts as a client-specific chaperone for collagen and plays a vital role in collagen maturation and the consequent embryonic development. In addition, this protein can be a potential target for the treatment of fibrosis. Despite its physiological and pathological importance, little is currently known about the collagen-binding mode of Hsp47 from a structural aspect. Here, we describe an NMR study that was conducted to identify the collagen-binding site of Hsp47. We used chicken Hsp47, which has higher solubility than its human counterpart, and applied a selective 15N-labeling method targeting its tryptophan and histidine residues. Spectral assignments were made based on site-directed mutagenesis of the individual residues. By inspecting the spectral changes that were observed upon interaction with a trimeric collagen peptide and the mutational data, we successfully mapped the collagen-binding site in the B/C β-barrel domain and a nearby loop in a 3D-homology model based upon a serpin fold. This conclusion was confirmed by mutational analysis. Our findings provide a molecular basis for the design of compounds that target the interaction between Hsp47 and procollagen as therapeutics for fibrotic diseases.
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Affiliation(s)
- Maho Yagi-Utsumi
- Institute for Molecular Science and Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Okazaki, Japan
- Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Sumi Yoshikawa
- Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Yoshiki Yamaguchi
- Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
- Systems Glycobiology Research Group, Chemical Biology Department, Advanced Science Institute, RIKEN, Wako, Japan
| | - Yohei Nishi
- Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Eiji Kurimoto
- Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
- Faculty of Pharmacy, Meijo University, Nagoya, Japan
| | - Yoshihito Ishida
- Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Takayuki Homma
- Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Jun Hoseki
- Laboratory of Molecular and Cellular Biology, Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan
| | - Yoshimi Nishikawa
- School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Takaki Koide
- School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Kazuhiro Nagata
- Laboratory of Molecular and Cellular Biology, Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan
| | - Koichi Kato
- Institute for Molecular Science and Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Okazaki, Japan
- Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
- * E-mail:
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Masago Y, Hosoya A, Kawasaki K, Kawano S, Nasu A, Toguchida J, Fujita K, Nakamura H, Kondoh G, Nagata K. The molecular chaperone Hsp47 is essential for cartilage and endochondral bone formation. J Cell Sci 2012; 125:1118-28. [PMID: 22492985 DOI: 10.1242/jcs.089748] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Heat shock protein 47 kDa (Hsp47) is considered as a molecular chaperone essential for the correct folding of type I and type IV procollagen in the ER. However, the function of Hsp47 for other types of procollagen and its importance for chondrogenesis have never been elucidated. To examine the function of Hsp47 in cartilage formation and endochondral ossification, we conditionally inactivated the Hsp47 gene in chondrocytes using Hsp47 floxed mice and mice carrying a chondrocyte-specific Col2a1-Cre transgene. Hsp47 conditional null mutant mice died just before or shortly after birth, and exhibited severe generalized chondrodysplasia and bone deformities with lower levels of type II and type XI collagen. Second-harmonic generation (SHG) analysis and electron microscopy revealed the accumulation of misaligned type I collagen molecules in the intervertebral discs and a substantial decrease in type II collagen fibers, respectively. Whole-mount skeletal staining showed no calcified region in the vertebral bodies of sacral vertebrae, and revealed that the endochondral bones were severely twisted and shortened. These results demonstrate that Hsp47 is indispensable for well-organized cartilage and normal endochondral bone formation.
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Affiliation(s)
- Yusaku Masago
- Department of Molecular and Cellular Biology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, 606-8507, Japan
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46
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Morito D, Nagata K. ER Stress Proteins in Autoimmune and Inflammatory Diseases. Front Immunol 2012; 3:48. [PMID: 22566930 PMCID: PMC3342303 DOI: 10.3389/fimmu.2012.00048] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Accepted: 02/28/2012] [Indexed: 11/24/2022] Open
Abstract
Over the past two decades, heat shock proteins (HSPs) have been implicated in inflammatory responses and autoimmunity. HSPs were originally believed to maintain protein quality control in the cytosol. However, they also exist extracellularly and appear to act as inflammatory factors. Recently, a growing body of evidence suggested that the other class of stress proteins such as, endoplasmic reticulum (ER) stress proteins, which originally act as protein quality control factors in the secretory pathway and are induced by ER stress in inflammatory lesions, also participate in inflammation and autoimmunity. The immunoglobulin heavy-chain binding protein (Bip)/glucose-regulated protein 78 (GRP78), calnexin, calreticulin, glucose-regulated protein 94 (GRP94)/gp96, oxygen regulated protein 150 (ORP150)/glucose-regulated protein 170 (GRP170), homocysteine-induced ER protein (Herp) and heat shock protein 47 (hsp47)/Serpin H1, which are expressed not only in the ER but also occasionally at the cell surface play pathophysiological roles in autoimmune and inflammatory diseases as pro- or anti-inflammatory factors. Here we describe the accumulating evidence of the participation of ER stress proteins in autoimmunity and inflammation and discuss the critical differences between the two classes of stress proteins.
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Affiliation(s)
- Daisuke Morito
- Faculty of Life Sciences, Kyoto Sangyo University Kyoto, Japan
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47
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Ono T, Miyazaki T, Ishida Y, Uehata M, Nagata K. Direct in vitro and in vivo evidence for interaction between Hsp47 protein and collagen triple helix. J Biol Chem 2012; 287:6810-8. [PMID: 22235129 DOI: 10.1074/jbc.m111.280248] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Hsp47 (heat shock protein 47), a collagen-specific molecular chaperone, is essential for the maturation of various types of procollagens. Previous studies have suggested that Hsp47 may preferentially recognize the triple-helix form of procollagen rather than unfolded procollagen chains in the endoplasmic reticulum. However, the underlying mechanism has remained unclear because of limitations in the available methods for detecting in vitro and in vivo interactions between Hsp47 and collagen. In this study, we established novel methods for this purpose by adopting a time-resolved FRET technique in vitro and a bimolecular fluorescence complementation technique in vivo. Using these methods, we provide direct evidence that Hsp47 binds to collagen triple helices but not to the monomer form in vitro. We also demonstrate that Hsp47 binds a collagen model peptide in the trimer conformation in vivo. Hsp47 did not bind collagen peptides that had been modified to block their ability to form triple helices in vivo. These results conclusively indicate that Hsp47 recognizes the triple-helix form of procollagen in vitro and in vivo.
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Affiliation(s)
- Takashi Ono
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Advanced Medical Research Laboratory, Mitsubishi Tanabe Pharma Corporation, 1000 Kamoshida-cho,Aoba-ku, Yokohama 227-0033, Japan
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48
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Abstract
The endoplasmic reticulum (ER) uses an elaborate surveillance system called the ER quality control (ERQC) system. The ERQC facilitates folding and modification of secretory and membrane proteins and eliminates terminally misfolded polypeptides through ER-associated degradation (ERAD) or autophagic degradation. This mechanism of ER protein surveillance is closely linked to redox and calcium homeostasis in the ER, whose balance is presumed to be regulated by a specific cellular compartment. The potential to modulate proteostasis and metabolism with chemical compounds or targeted siRNAs may offer an ideal option for the treatment of disease.
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49
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Abstract
Analysis of the human genome reveals that approximately a third of all open reading frames code for proteins that enter the endoplasmic reticulum (ER), demonstrating the importance of this organelle for global protein maturation. The path taken by a polypeptide through the secretory pathway starts with its translocation across or into the ER membrane. It then must fold and be modified correctly in the ER before being transported via the Golgi apparatus to the cell surface or another destination. Being physically segregated from the cytosol means that the ER lumen has a distinct folding environment. It contains much of the machinery for fulfilling the task of protein production, including complex pathways for folding, assembly, modification, quality control, and recycling. Importantly, the compartmentalization means that several modifications that do not occur in the cytosol, such as glycosylation and extensive disulfide bond formation, can occur to secreted proteins to enhance their stability before their exposure to the extracellular milieu. How these various machineries interact during the normal pathway of folding and protein secretion is the subject of this review.
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Affiliation(s)
- Ineke Braakman
- Cellular Protein Chemistry, Faculty of Science, Utrecht University, Utrecht, The Netherlands.
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50
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Mendonça DBS, Miguez PA, Mendonça G, Yamauchi M, Aragão FJL, Cooper LF. Titanium surface topography affects collagen biosynthesis of adherent cells. Bone 2011; 49:463-72. [PMID: 21549232 DOI: 10.1016/j.bone.2011.04.019] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Revised: 03/25/2011] [Accepted: 04/20/2011] [Indexed: 11/21/2022]
Abstract
Collagen-dependent microstructure and physicochemical properties of newly formed bone around implant surfaces represent key determinants of implant biomechanics. This study investigated the effects of implant surface topography on collagen biosynthesis of adherent human mesenchymal stem cells (hMSCs). hMSCs were grown for 0 to 42 days on titanium disks (20.0 × 1.0 mm) with smooth or rough surfaces. Cell attachment and spreading were evaluated by incubating cells with Texas-Red-conjugated phalloidin antibody. Quantitative real-time PCR was used to measure the mRNA levels of Col1α1 and collagen modifying genes including prolyl hydroxylases (PHs), lysyl oxidases (LOXs) and lysyl hydroxylases (LHs). Osteogenesis was assessed at the level of osteoblast specific gene expression and alizarin red staining for mineralization. Cell layer-associated matrix and collagen content were determined by amino acid analysis. At 4h, 100% cells were flattened on both surfaces, however the cells on smooth surface had a fibroblast-like shape, while cells on rough surface lacked any defined long axis. PH, LH, and most LOX mRNA levels were greater in hMSCs grown on rough surfaces for 3 days. The mineralized area was greater for rough surface at 28 and 42 days. The collagen content (percent total protein) was also greater at rough surface compared to smooth surface at 28 (36% versus 26%) and 42 days (46% versus 29%), respectively (p<.05). In a cell culture model, rough surface topography positively modulates collagen biosynthesis and accumulation and the expression of genes associated with collagen cross-linking in adherent hMSC. The altered biosynthesis of the collagen-rich ECM adjacent to endosseous implants may influence the biomechanical properties of osseointegrated endosseous implants.
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Affiliation(s)
- Daniela B S Mendonça
- Bone Biology and Implant Therapy Laboratory, Department of Prosthodontics, University of North Carolina at Chapel Hill, 330 Brauer Hall, CB #7450, Chapel Hill, NC 27599, USA.
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