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Horii Y, Iniwa T, Onitsuka M, Tsukimoto J, Tanaka Y, Ike H, Fukushi Y, Ando H, Takeuchi Y, Nishioka SI, Tsuji D, Ikuo M, Yamazaki N, Takiguchi Y, Ishimaru N, Itoh K. Reversal of neuroinflammation in novel GS model mice by single i.c.v. administration of CHO-derived rhCTSA precursor protein. Mol Ther Methods Clin Dev 2022; 25:297-310. [PMID: 35573044 PMCID: PMC9062439 DOI: 10.1016/j.omtm.2022.04.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 04/10/2022] [Indexed: 11/29/2022]
Abstract
Galactosialidosis (GS) is a lysosomal cathepsin A (CTSA) deficiency. It associates with a simultaneous decrease of neuraminidase 1 (NEU1) activity and sialylglycan storage. Central nervous system (CNS) symptoms reduce the quality of life of juvenile/adult-type GS patients, but there is no effective therapy. Here, we established a novel GS model mouse carrying homozygotic Ctsa IVS6+1g→a mutation causing partial exon 6 skipping with concomitant deficiency of Ctsa/Neu1. The GS mice developed juvenile/adult GS-like symptoms, such as gargoyle-like face, edema, proctoprosia due to sialylglycan accumulation, and neurovisceral inflammation, including activated microglia/macrophage appearance and increase of inflammatory chemokines. We produced human CTSA precursor proteins (proCTSA), a homodimer carrying terminal mannose 6-phosphate (M6P)-type N-glycans. The CHO-derived proCTSA was taken up by GS patient-derived fibroblasts via M6P receptors and delivered to lysosomes. Catalytically active mature CTSA showed a shorter half-life due to intralysosomal proteolytic degradation. Following single i.c.v. administration, proCTSA was widely distributed, restored the Neu1 activity, and reduced the sialylglycans accumulated in brain regions. Moreover, proCTSA suppressed neuroinflammation associated with reduction of activated microglia/macrophage and up-regulated Mip1α. The results show therapeutic effects of intracerebrospinal enzyme replacement utilizing CHO-derived proCTSA and suggest suppression of CNS symptoms.
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Affiliation(s)
- Yuto Horii
- Department of Medicinal Biotechnology, Institute for Medicinal Research, Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan
| | - Toshiki Iniwa
- Department of Medicinal Biotechnology, Institute for Medicinal Research, Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan
| | - Masayoshi Onitsuka
- Division of Bioscience and Biotechnology, Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima, Japan
| | - Jun Tsukimoto
- Department of Medicinal Biotechnology, Institute for Medicinal Research, Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan
| | - Yuki Tanaka
- Department of Medicinal Biotechnology, Faculty of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan
| | - Hironobu Ike
- Department of Medicinal Biotechnology, Institute for Medicinal Research, Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan
| | - Yuri Fukushi
- Department of Medicinal Biotechnology, Institute for Medicinal Research, Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan
| | - Haruna Ando
- Department of Medicinal Biotechnology, Institute for Medicinal Research, Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan
| | - Yoshie Takeuchi
- Department of Medicinal Biotechnology, Faculty of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan
| | - So-Ichiro Nishioka
- Department of Medicinal Biotechnology, Institute for Medicinal Research, Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan
| | - Daisuke Tsuji
- Department of Medicinal Biotechnology, Institute for Medicinal Research, Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan
| | - Mariko Ikuo
- Department of Medicinal Biotechnology, Institute for Medicinal Research, Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan
| | - Naoshi Yamazaki
- Department of Clinical Pharmacology, Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan
| | - Yoshiharu Takiguchi
- Department of Clinical Pharmacology, Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan
| | - Naozumi Ishimaru
- Department of Oral Molecular Pathology, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Kohji Itoh
- Department of Medicinal Biotechnology, Institute for Medicinal Research, Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan.,Department of Medicinal Biotechnology, Faculty of Pharmaceutical Sciences, Tokushima University, Tokushima, Japan
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Wang J, Fang DA, Wang Y, Wang YL, Cheng L, He L, Wang Q. Cathepsin A protein from the accessory sex gland of the Chinese mitten crab (Eriocheir sinensis) plays a key role in spermatophore digestion. JOURNAL OF INSECT PHYSIOLOGY 2013; 59:953-960. [PMID: 23871752 DOI: 10.1016/j.jinsphys.2013.07.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 07/08/2013] [Accepted: 07/10/2013] [Indexed: 06/02/2023]
Abstract
Accessory sex gland (ASG) secretory proteins of the Chinese mitten crab (Eriocheir sinensis) can effectively digest the spermatophore wall. In order to identify which proteins participate in spermatophore wall digestion, a 50-kDa protein secreted from the ASG was purified to homogeneity by a series of isolation steps, including ammonium sulfate fractionation, Sephadex G-25 S gel-filtration, ion exchange chromatography on a DEAE-Sephacel column and Sephacryl S-200 gel-filtration. The purified protein was effective in spermatophore wall rupture, and the subsequent HPLC-ESI-MS/MS shotgun analysis showed the digestive protein to be cathepsin A (cathA). This finding was also confirmed by Western blot analysis and a cathA inhibitor digestion experiment. ELISA analysis showed that cathA enzymatic activity from ASG secretions increased during its purification process. Furthermore, enzymatic activity was significantly higher in the mating period of E. sinensis parallel to the latest developmental stage of the gland. Moreover, analysis from a cathA inhibitor that inhibits spermatophore wall digestion showed that cathA is the main enzyme involved. Hence, we first report the characterization of cathA from the ASG, which might play a key role in digesting the spermatophore wall of E. sinensis.
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Affiliation(s)
- Juan Wang
- School of Life Science, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
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Oheda Y, Kotani M, Murata M, Sakuraba H, Kadota Y, Tatano Y, Kuwahara J, Itoh K. Elimination of abnormal sialylglycoproteins in fibroblasts with sialidosis and galactosialidosis by normal gene transfer and enzyme replacement. Glycobiology 2005; 16:271-80. [PMID: 16361247 DOI: 10.1093/glycob/cwj069] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Sialidosis and galactosialidosis are lysosomal storage diseases caused by the genetic defects of lysosomal sialidase (neuraminidase-1; NEU1) and lysosomal protective protein/cathepsin A (PPCA), respectively, associated with a NEU1 deficiency, excessive accumulation of sialylglycoconjugates, and development of progressive neurosomatic manifestations; in addition, the latter disorder is accompanied by simultaneous deficiencies of beta-galactosidase and cathepsin A. We demonstrated that a few soluble N-glycosylated proteins carrying sialyloligosaccharides sensitive to glycopeptidase F (GPF) can be specifically detected in cultured fibroblasts from sialidosis and galactosialidosis cases by blotting with a Maackia amurensis (MAM) lectin. We also examined the therapeutic effects of normal gene transfer and enzyme replacement by evaluating the decreases in sialylglycoconjugates accumulated in fibroblasts with these NEU1 deficiencies. The specific N-glycosylated proteins detected on MAM lectin blotting as well as the granular lysosomal fluorescence due to an avidin-FITC/biotinylated MAM lectin conjugate in sialidosis and galactosialidosis fibroblasts disappeared in parallel with the restoration of the intracellular NEU1 activity after transfection of the recombinant NEU1 fused to HA tag sequence and the wild-type PPCA cDNA as well as administration of the recombinant PPCA precursor protein. The detection method for the abnormal sialylglycoproteins in cultured cells involving MAM lectin was demonstrated to be useful not only for biochemical and diagnostic analyses of NEU1 deficiencies but also for therapeutic evaluation of these conditions.
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Affiliation(s)
- Yukako Oheda
- Department of Medicinal Biotechnology, Graduate School of Pharmaceutical Sciences, The University of Tokushima, Tokushima, Japan
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