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Yang H, Zhang X, Wang C, Zhang H, Yi J, Wang K, Hou Y, Ji P, Jin X, Li C, Zhang M, Huang S, Jia H, Hu K, Mou L, Wang R. Microcolin H, a novel autophagy inducer, exerts potent antitumour activity by targeting PITPα/β. Signal Transduct Target Ther 2023; 8:428. [PMID: 37963877 PMCID: PMC10645841 DOI: 10.1038/s41392-023-01667-2] [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: 11/24/2022] [Revised: 09/16/2023] [Accepted: 09/30/2023] [Indexed: 11/16/2023] Open
Abstract
The identification of effective drug targets and the development of bioactive molecules are areas of high need in cancer therapy. The phosphatidylinositol transfer protein alpha/beta isoform (PITPα/β) has been reported to play an essential role in integrating phosphoinositide trafficking and lipid metabolism in diverse cellular processes but remains unexplored as a potential target for cancer treatment. Herein, data analysis of clinical cancer samples revealed that PITPα/β expression is closely correlated with the poor prognosis. Target identification by chemical proteomic methods revealed that microcolin H, a naturally occurring marine lipopeptide, directly binds PITPα/β and displays antiproliferative activity on different types of tumour cell lines. Furthermore, we identified that microcolin H treatment increased the conversion of LC3I to LC3II, accompanied by a reduction of the level of p62 in cancer cells, leading to autophagic cell death. Moreover, microcolin H showed preeminent antitumour efficacy in nude mouse subcutaneous tumour models with low toxicity. Our discoveries revealed that by targeting PITPα/β, microcolin H induced autophagic cell death in tumours with efficient anti-proliferating activity, which sheds light on PITPα/β as a promising therapeutic target for cancer treatment.
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Grants
- 21807053 National Natural Science Foundation of China (National Science Foundation of China)
- the Ministry of Education “Peptide Drugs” Innovation Team(No. IRT_15R27, China);the Fundamental Research Funds for the Central Universities (No. lzujbky-2019-15, China);the CAMS Innovation Fund for Medical Sciences (CIFMS, Nos. 2021-I2M-1-026, 2022-I2M-2-002, China)
- the Ministry of Education “Peptide Drugs” Innovation Team (No. IRT_15R27, China)
- the Ministry of Education “Peptide Drugs” Innovation Team (No. IRT_15R27, China), the CAMS Innovation Fund for Medical Sciences (CIFMS, Nos. 2019-I2M-5-074, 2021-I2M-1-026, 2021-I2M-3-001, 2022-I2M-2-002, China),
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Affiliation(s)
- Hange Yang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, Gansu, P. R. China
| | - Xiaowei Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, Gansu, P. R. China
| | - Cong Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, Gansu, P. R. China
| | - Hailong Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, Gansu, P. R. China.
| | - Juan Yi
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, Gansu, P. R. China
| | - Kun Wang
- Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing, P. R. China
| | - Yanzhe Hou
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, Gansu, P. R. China
| | - Peihong Ji
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, Gansu, P. R. China
| | - Xiaojie Jin
- Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, China
| | - Chenghao Li
- Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, China
| | - Min Zhang
- Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, China
| | - Shan Huang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, Gansu, P. R. China
| | - Haoyuan Jia
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, Gansu, P. R. China
- School of Life Science, Lanzhou University, 730000, Lanzhou, P. R. China
| | - Kuan Hu
- Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing, P. R. China
| | - Lingyun Mou
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, Gansu, P. R. China.
- School of Life Science, Lanzhou University, 730000, Lanzhou, P. R. China.
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou, Gansu, P. R. China.
- Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing, P. R. China.
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2
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Tavakoli S, Garcia V, Gähwiler E, Adatto I, Rangan A, Messemer KA, Kakhki SA, Yang S, Chan VS, Manning ME, Fotowat H, Zhou Y, Wagers AJ, Zon LI. Transplantation-based screen identifies inducers of muscle progenitor cell engraftment across vertebrate species. Cell Rep 2023; 42:112365. [PMID: 37018075 PMCID: PMC10548355 DOI: 10.1016/j.celrep.2023.112365] [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: 10/21/2022] [Revised: 01/06/2023] [Accepted: 03/22/2023] [Indexed: 04/06/2023] Open
Abstract
Stem cell transplantation presents a potentially curative strategy for genetic disorders of skeletal muscle, but this approach is limited by the deleterious effects of cell expansion in vitro and consequent poor engraftment efficiency. In an effort to overcome this limitation, we sought to identify molecular signals that enhance the myogenic activity of cultured muscle progenitors. Here, we report the development and application of a cross-species small-molecule screening platform employing zebrafish and mice, which enables rapid, direct evaluation of the effects of chemical compounds on the engraftment of transplanted muscle precursor cells. Using this system, we screened a library of bioactive lipids to discriminate those that could increase myogenic engraftment in vivo in zebrafish and mice. This effort identified two lipids, lysophosphatidic acid and niflumic acid, both linked to the activation of intracellular calcium-ion flux, which showed conserved, dose-dependent, and synergistic effects in promoting muscle engraftment across these vertebrate species.
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Affiliation(s)
- Sahar Tavakoli
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Stem Cell Program and Division of Hematology/Oncology, Boston Children's Hospital, Boston, MA 02115, USA
| | - Vivian Garcia
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Eric Gähwiler
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Institute for Regenerative Medicine, University of Zurich, ETH Zurich, Zurich, Switzerland
| | - Isaac Adatto
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Stem Cell Program and Division of Hematology/Oncology, Boston Children's Hospital, Boston, MA 02115, USA
| | - Apoorva Rangan
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA; Stanford Medicine, Stanford University, Stanford, CA 94305, USA
| | - Kathleen A Messemer
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Sara Ashrafi Kakhki
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Song Yang
- Stem Cell Program and Division of Hematology/Oncology, Boston Children's Hospital, Boston, MA 02115, USA
| | - Victoria S Chan
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Stem Cell Program and Division of Hematology/Oncology, Boston Children's Hospital, Boston, MA 02115, USA
| | - Margot E Manning
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Stem Cell Program and Division of Hematology/Oncology, Boston Children's Hospital, Boston, MA 02115, USA
| | - Haleh Fotowat
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Yi Zhou
- Stem Cell Program and Division of Hematology/Oncology, Boston Children's Hospital, Boston, MA 02115, USA
| | - Amy J Wagers
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Paul F. Glenn Center for the Biology of Aging, Harvard Medical School, Boston, MA 02115, USA; Joslin Diabetes Center, Boston, MA 02215, USA.
| | - Leonard I Zon
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Stem Cell Program and Division of Hematology/Oncology, Boston Children's Hospital, Boston, MA 02115, USA; Howard Hughes Medical Institute, Boston, MA 02115, USA; Children's Hospital and Dana Farber Cancer Institute, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA.
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3
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Is the fundamental pathology in Duchenne's muscular dystrophy caused by a failure of glycogenolysis–glycolysis in costameres? J Genet 2023. [DOI: 10.1007/s12041-022-01410-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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4
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Sánchez-Roncancio C, García B, Gallardo-Hidalgo J, Yáñez JM. GWAS on Imputed Whole-Genome Sequence Variants Reveal Genes Associated with Resistance to Piscirickettsia salmonis in Rainbow Trout ( Oncorhynchus mykiss). Genes (Basel) 2022; 14:114. [PMID: 36672855 PMCID: PMC9859203 DOI: 10.3390/genes14010114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/27/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022] Open
Abstract
Genome-wide association studies (GWAS) allow the identification of associations between genetic variants and important phenotypes in domestic animals, including disease-resistance traits. Whole Genome Sequencing (WGS) data can help increase the resolution and statistical power of association mapping. Here, we conduced GWAS to asses he facultative intracellular bacterium Piscirickettsia salmonis, which affects farmed rainbow trout, Oncorhynchus mykiss, in Chile using imputed genotypes at the sequence level and searched for candidate genes located in genomic regions associated with the trait. A total of 2130 rainbow trout were intraperitoneally challenged with P. salmonis under controlled conditions and genotyped using a 57K single nucleotide polymorphism (SNP) panel. Genotype imputation was performed in all the genotyped animals using WGS data from 102 individuals. A total of 488,979 imputed WGS variants were available in the 2130 individuals after quality control. GWAS revealed genome-wide significant quantitative trait loci (QTL) in Omy02, Omy03, Omy25, Omy26 and Omy27 for time to death and in Omy26 for binary survival. Twenty-four (24) candidate genes associated with P. salmonis resistance were identified, which were mainly related to phagocytosis, innate immune response, inflammation, oxidative response, lipid metabolism and apoptotic process. Our results provide further knowledge on the genetic variants and genes associated with resistance to intracellular bacterial infection in rainbow trout.
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Affiliation(s)
- Charles Sánchez-Roncancio
- Doctorado en Acuicultura, Programa Cooperativo: Universidad de Chile. Universidad Católica del Norte. Pontificia Universidad Católica de Valparaíso, Chile
- Center for Research and Innovation in Aquaculture (CRIA), Universidad de Chile, Santiago 8820808, Chile
| | - Baltasar García
- Center for Research and Innovation in Aquaculture (CRIA), Universidad de Chile, Santiago 8820808, Chile
- Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, La Pintana, Santiago 8820808, Chile
| | - Jousepth Gallardo-Hidalgo
- Center for Research and Innovation in Aquaculture (CRIA), Universidad de Chile, Santiago 8820808, Chile
- Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, La Pintana, Santiago 8820808, Chile
| | - José M. Yáñez
- Center for Research and Innovation in Aquaculture (CRIA), Universidad de Chile, Santiago 8820808, Chile
- Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, La Pintana, Santiago 8820808, Chile
- Núcleo Milenio de Salmonidos Invasores Australes (INVASAL), Concepcion 4030000, Chile
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5
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Shelton GD, Minor KM, Vieira NM, Kunkel LM, Friedenberg SG, Cullen JN, Guo LT, Zatz M, Mickelson JR. Tandem duplication within the DMD gene in Labrador retrievers with a mild clinical phenotype. Neuromuscul Disord 2022; 32:836-841. [PMID: 36041985 PMCID: PMC10040250 DOI: 10.1016/j.nmd.2022.08.001] [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: 04/16/2022] [Revised: 07/30/2022] [Accepted: 08/05/2022] [Indexed: 11/25/2022]
Abstract
A form of dystrophinopathy with mild or subclinical neuromuscular signs has been previously reported in a family of Labrador retrievers. Markedly and persistently elevated creatine kinase activity was first noted at 6 months of age. Skeletal muscle biopsies revealed a dystrophic phenotype, with dystrophin non-detectable on western blotting and immunohistochemical staining, and with increased utrophin expression. In this report we demonstrate with western blotting that α-dystroglycan is present at essentially normal levels. Whole genome sequencing has also now revealed an approximately 400kb tandem genomic DNA duplication including exons 2-7 of the DMD gene that was inserted into intron 7 of the wild type gene. Skeletal muscle cDNA from 2 cases contained DMD transcripts as expected from an in-frame properly-spliced exon 2-7 tandem insertion. A similar 5' duplication involving DMD exons 2-7 has been reported in a human family with dilated cardiomyopathy but without skeletal myopathy. This is the 3rd confirmed mutation in the DMD gene in Labrador retrievers.
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Affiliation(s)
- G Diane Shelton
- Department of Pathology, School of Medicine, University of California San Diego, LaJolla, CA, USA.
| | - Katie M Minor
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN, USA
| | - Natassia M Vieira
- The Division of Genetics and Genomics, Boston Children's Hospital, Department of Pediatrics and Genetics, Harvard Medical School, Boston, MA, USA
| | - Louis M Kunkel
- The Division of Genetics and Genomics, Boston Children's Hospital, Department of Pediatrics and Genetics, Harvard Medical School, Boston, MA, USA
| | - Steven G Friedenberg
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN, USA
| | - Jonah N Cullen
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN, USA
| | - Ling T Guo
- Department of Pathology, School of Medicine, University of California San Diego, LaJolla, CA, USA
| | - Mayana Zatz
- Human Genome and Stem Cell Center, Biosciences Institute, University of Sao Paulo, Brazil
| | - James R Mickelson
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN, USA
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6
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Hashimoto D, Fujimoto K, Morioka S, Ayabe S, Kataoka T, Fukumura R, Ueda Y, Kajimoto M, Hyuga T, Suzuki K, Hara I, Asamura S, Wakana S, Yoshiki A, Gondo Y, Tamura M, Sasaki T, Yamada G. Establishment of mouse line showing inducible priapism-like phenotypes. Reprod Med Biol 2022; 21:e12472. [PMID: 35765371 PMCID: PMC9207557 DOI: 10.1002/rmb2.12472] [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: 03/29/2022] [Revised: 05/19/2022] [Accepted: 05/25/2022] [Indexed: 11/11/2022] Open
Abstract
Purpose Penile research is expected to reveal new targets for treatment and prevention of the complex mechanisms of its disorder including erectile dysfunction (ED). Thus, analyses of the molecular processes of penile ED and continuous erection as priapism are essential issues of reproductive medicine. Methods By performing mouse N‐ethyl‐N‐nitrosourea mutagenesis and exome sequencing, we established a novel mouse line displaying protruded genitalia phenotype (PGP; priapism‐like phenotype) and identified a novel Pitpna gene mutation for PGP. Extensive histological analyses on the Pitpna mutant and intracavernous pressure measurement (ICP) and liquid chromatography–electrospray ionization tandem mass spectrometry (LC–ESI/MS)/MS analyses were performed. Results We evaluated the role of phospholipids during erection for the first time and showed the mutants of inducible phenotypes of priapism. Moreover, quantitative analysis using LC–ESI/MS/MS revealed that the level of phosphatidylinositol (PI) was significantly lower in the mutant penile samples. These results imply that PI may contribute to penile erection by PITPα. Conclusions Our findings suggest that the current mutant is a mouse model for priapism and abnormalities in PI signaling pathways through PITPα may lead to priapism providing an attractive novel therapeutic target in its treatment.
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Affiliation(s)
- Daiki Hashimoto
- Department of Developmental Genetics Institute of Advanced Medicine, Wakayama Medical University Wakayama Japan.,Department of Plastic and Reconstructive Surgery Wakayama Medical University Wakayama Japan
| | - Kota Fujimoto
- Department of Developmental Genetics Institute of Advanced Medicine, Wakayama Medical University Wakayama Japan.,Department of Plastic and Reconstructive Surgery Wakayama Medical University Wakayama Japan
| | - Shin Morioka
- Department of Biochemical Pathophysiology/Lipid Biology Medical Research Institute Tokyo Medical and Dental University (TMDU) Tokyo Japan
| | - Shinya Ayabe
- Experimental Animal Division RIKEN BioResource Research Center Ibaraki Japan
| | - Tomoya Kataoka
- Department of Clinical Pharmaceutics Graduate School of Medical Sciences Nagoya City University Nagoya Japan
| | - Ryutaro Fukumura
- Clinical Laboratories Department sSRL & Shizuoka Cancer Center Collaborative Laboratories, Inc Shizuoka Pref Japan
| | - Yuko Ueda
- Department of Developmental Genetics Institute of Advanced Medicine, Wakayama Medical University Wakayama Japan.,Department of Urology Wakayama Medical University Wakayama Japan
| | - Mizuki Kajimoto
- Department of Developmental Genetics Institute of Advanced Medicine, Wakayama Medical University Wakayama Japan.,Department of Plastic and Reconstructive Surgery Wakayama Medical University Wakayama Japan
| | - Taiju Hyuga
- Department of Pediatric Urology Children's Medical Center Tochigi Jichi Medical University Tochigi Japan
| | - Kentaro Suzuki
- Department of Developmental Genetics Institute of Advanced Medicine, Wakayama Medical University Wakayama Japan.,Department of Plastic and Reconstructive Surgery Wakayama Medical University Wakayama Japan
| | - Isao Hara
- Department of Urology Wakayama Medical University Wakayama Japan
| | - Shinichi Asamura
- Department of Plastic and Reconstructive Surgery Wakayama Medical University Wakayama Japan
| | - Shigeharu Wakana
- Department of Animal Experimentation Foundation for Biomedical Research and Innovation at Kobe Creative Lab for Innovation in Kobe 5F 6-3-7 Kobe Hyogo Japan
| | - Atsushi Yoshiki
- Experimental Animal Division RIKEN BioResource Research Center Ibaraki Japan
| | - Yoichi Gondo
- Department of Molecular Life Sciences Division of Basic Medical Science and Molecular Medicine Tokai University School of Medicine Isehara-shi Kanagawa Japan
| | - Masaru Tamura
- Technology and Development Team for Mouse Phenotype Analysis RIKEN BioResource Research Center Tsukuba Ibaraki Japan
| | - Takehiko Sasaki
- Department of Biochemical Pathophysiology/Lipid Biology Medical Research Institute Tokyo Medical and Dental University (TMDU) Tokyo Japan
| | - Gen Yamada
- Department of Developmental Genetics Institute of Advanced Medicine, Wakayama Medical University Wakayama Japan.,Department of Plastic and Reconstructive Surgery Wakayama Medical University Wakayama Japan
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7
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Yazid MD, Hung-Chih C. Perturbation of PI3K/Akt signaling affected autophagy modulation in dystrophin-deficient myoblasts. Cell Commun Signal 2021; 19:105. [PMID: 34706731 PMCID: PMC8554905 DOI: 10.1186/s12964-021-00785-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 09/06/2021] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND The absence of dystrophin has gave a massive impact on myotube development in Muscular Dystrophy pathogenesis. One of the conserved signaling pathways involved in skeletal muscle differentiation is the PI3K/Akt/mTOR pathway that plays a vital role in autophagy regulation. To further understand and establish targeted therapy in dystrophin-deficient myoblasts, protein expression profiling has been determined which provides information on perturbed autophagy modulation and activation. METHODS In this study, a dystrophin-deficient myoblast cell line established from the skeletal muscle of a dystrophic (mdx) mouse was used as a model. The dfd13 (dystrophin-deficient) and C2C12 (non-dystrophic) myoblasts were cultured in low mitogen conditions for 10 days to induce differentiation. The cells were subjected to total protein extraction prior to Western blotting assay technique. Protein sub-fractionation has been conducted to determine protein localization. The live-cell analysis of autophagy assay was done using a flow cytometer. RESULTS In our culture system, the dfd13 myoblasts did not achieve terminal differentiation. PTEN expression was profoundly increased in dfd13 myoblasts throughout the differentiation day subsequently indicates perturbation of PI3K/Akt/mTOR regulation. In addition, rictor-mTORC2 was also found inactivated in this event. This occurrence has caused FoxO3 misregulation leads to higher activation of autophagy-related genes in dfd13 myoblasts. Autophagosome formation was increased as LC3B-I/II showed accumulation upon differentiation. However, the ratio of LC3B lipidation and autophagic flux were shown decreased which exhibited dystrophic features. CONCLUSION Perturbation of the PTEN-PI3K/Akt pathway triggers excessive autophagosome formation and subsequently reduced autophagic flux within dystrophin-deficient myoblasts where these findings are of importance to understand Duchenne Muscular Dystrophy (DMD) patients. We believe that some manipulation within its regulatory signaling reported in this study could help restore muscle homeostasis and attenuate disease progression. Video Abstract.
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Affiliation(s)
- Muhammad Dain Yazid
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, UKM Medical Centre, Jalan Yaacob Latiff, 56000, Cheras, Kuala Lumpur, Malaysia. .,School of Biosciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
| | - Chen Hung-Chih
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.,Academia Sinica, No. 28, Lane 70, Section 2, Yanjiuyuan Rd, Nangang District, Taipei City, 115, Taiwan
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8
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Ashlin TG, Blunsom NJ, Cockcroft S. Courier service for phosphatidylinositol: PITPs deliver on demand. Biochim Biophys Acta Mol Cell Biol Lipids 2021; 1866:158985. [PMID: 34111527 PMCID: PMC8266687 DOI: 10.1016/j.bbalip.2021.158985] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/18/2021] [Accepted: 06/01/2021] [Indexed: 12/30/2022]
Abstract
Phosphatidylinositol is the parent lipid for the synthesis of seven phosphorylated inositol lipids and each of them play specific roles in numerous processes including receptor-mediated signalling, actin cytoskeleton dynamics and membrane trafficking. PI synthesis is localised to the endoplasmic reticulum (ER) whilst its phosphorylated derivatives are found in other organelles where the lipid kinases also reside. Phosphorylation of PI to phosphatidylinositol (4,5) bisphosphate (PI(4,5)P2) at the plasma membrane and to phosphatidylinositol 4-phosphate (PI4P) at the Golgi are key events in lipid signalling and Golgi function respectively. Here we review a family of proteins, phosphatidylinositol transfer proteins (PITPs), that can mobilise PI from the ER to provide the substrate to the resident kinases for phosphorylation. Recent studies identify specific and overlapping functions for the three soluble PITPs (PITPα, PITPβ and PITPNC1) in phospholipase C signalling, neuronal function, membrane trafficking, viral replication and in cancer metastases.
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Affiliation(s)
- Tim G Ashlin
- Dept. of Neuroscience, Physiology and Pharmacology, Division of Biosciences, University College London, London WC1E 6JJ, UK
| | - Nicholas J Blunsom
- Dept. of Neuroscience, Physiology and Pharmacology, Division of Biosciences, University College London, London WC1E 6JJ, UK
| | - Shamshad Cockcroft
- Dept. of Neuroscience, Physiology and Pharmacology, Division of Biosciences, University College London, London WC1E 6JJ, UK.
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β-Glucans as Dietary Supplement to Improve Locomotion and Mitochondrial Respiration in a Model of Duchenne Muscular Dystrophy. Nutrients 2021; 13:nu13051619. [PMID: 34065946 PMCID: PMC8151547 DOI: 10.3390/nu13051619] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 05/03/2021] [Accepted: 05/05/2021] [Indexed: 12/21/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is a severe X-linked neuromuscular childhood disorder that causes progressive muscle weakness and degeneration. A lack of dystrophin in DMD leads to inflammatory response, autophagic dysregulation, and oxidative stress in skeletal muscle fibers that play a key role in the progression of the pathology. β-glucans can modulate immune function by modifying the phagocytic activity of immunocompetent cells, notably macrophages. Mitochondrial function is also involved in an important mechanism of the innate and adaptive immune responses, owing to high need for energy of immune cells. In the present study, the effects of 1,3-1,6 β-glucans on five-day-old non-dystrophic and dystrophic (sapje) zebrafish larvae were investigated. The effects of the sonication of β-glucans and the dechorionation of embryos were also evaluated. The results showed that the incidence of dystrophic phenotypes was reduced when dystrophic embryos were exposed to 2 and 4 mg L-1 of 1,3-1,6 β-glucans. Moreover, when the dystrophic larvae underwent 8 mg L-1 treatment, an improvement of the locomotor performances and mitochondrial respiration were observed. In conclusion, the observed results demonstrated that 1,3-1,6 β-glucans improve locomotor performances and mitochondrial function in dystrophic zebrafish. Therefore, for ameliorating their life quality, 1,3-1,6 β-glucans look like a promising diet supplement for DMD patients, even though further investigations are required.
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Xu T, Xu Z, Lu L, Zeng T, Gu L, Huang Y, Zhang S, Yang P, Wen Y, Lin D, Xing M, Huang L, Liu G, Chao Z, Sun W. Transcriptome-wide study revealed m6A regulation of embryonic muscle development in Dingan goose (Anser cygnoides orientalis). BMC Genomics 2021; 22:270. [PMID: 33853538 PMCID: PMC8048326 DOI: 10.1186/s12864-021-07556-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 03/16/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The number of myofiber is determined during the embryonic stage and does not increase during the postnatal period for birds, including goose. Thus, muscle production of adult goose is pre-determined during embryogenesis. Previous studies show N6-methyladenosine (m6A) is an important regulator for skeletal muscle development of birds and miRNAs play as a co-regulator for the skeletal muscle development in birds. Herein, we sequenced m6A and miRNA transcriptomes to investigate the profiles of m6A and their potential mechanism of regulating breast muscle development in Dingan Goose. RESULTS We selected embryonic 21th day (E21) and embryonic 30th day (E30) to investigate the roles of transcriptome-wide m6A modification combining with mRNAs and miRNAs in goose breast muscle development. In this study, m6A peaks were mainly enriched in coding sequence (CDS) and start codon and397 genes were identified as differentially methylated genes (DMGs). GO and KEGG analysis showed that DMGs were highly related to cellular and metabolic process and that most DMGs were enriched in muscle-related pathways including Wnt signaling pathway, mTOR signaling and FoxO signaling pathway. Interestingly, a negative correlation between m6A methylation level and mRNA abundance was found through the analysis of m6A-RNA and RNA-seq data. Besides, we found 26 muscle-related genes in 397 DMGs. We also detected 228 differentially expressed miRNAs (DEMs), and further found 329 genes shared by the target genes of DEMs and DMGs (m6A-miRNA-genes), suggesting a tightly relationship between DEMs and DMGs. Among the m6A-miRNA-genes, we found 10 genes are related to breast muscle development. We further picked out an m6A-miRNA-gene, PDK3, from the 10 genes to visualize it and the result showed differentially methylated peaks on the mRNA transcript consistent with our m6A-seq results. CONCLUSION GO and KEGG of DMGs between E21 and E30 showed most DMGs were muscle-related. In total, 228 DEMs were found, and the majority of DMGs were overlapped with the targets of DEGs. The differentially methylated peaks along with an m6A-miRNA-gene, PDK3, showed the similar results with m6A-seq results. Taken together, the results presented here provide a reference for further investigation of embryonic skeletal muscle development mechanism in goose.
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Affiliation(s)
- Tieshan Xu
- Institute of Animal Science & Veterinary Medicine, Hainan Academy of Agricultural Sciences, No. 14 Xingdan Road, Haikou, 571100 People’s Republic of China
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101 People’s Republic of China
| | - Zijie Xu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100 People’s Republic of China
| | - Lizhi Lu
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, People’s Republic of China
| | - Tao Zeng
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, People’s Republic of China
| | - Lihong Gu
- Institute of Animal Science & Veterinary Medicine, Hainan Academy of Agricultural Sciences, No. 14 Xingdan Road, Haikou, 571100 People’s Republic of China
| | - Yongzhen Huang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100 People’s Republic of China
| | - Shunjin Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100 People’s Republic of China
| | - Peng Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100 People’s Republic of China
| | - Yifan Wen
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100 People’s Republic of China
| | - Dajie Lin
- Institute of Animal Science & Veterinary Medicine, Hainan Academy of Agricultural Sciences, No. 14 Xingdan Road, Haikou, 571100 People’s Republic of China
| | - Manping Xing
- Institute of Animal Science & Veterinary Medicine, Hainan Academy of Agricultural Sciences, No. 14 Xingdan Road, Haikou, 571100 People’s Republic of China
- Key Laboratory of Tropical Animal Breeding and Disease Research, Haikou, 571100 People’s Republic of China
| | - Lili Huang
- Institute of Animal Science & Veterinary Medicine, Hainan Academy of Agricultural Sciences, No. 14 Xingdan Road, Haikou, 571100 People’s Republic of China
- Key Laboratory of Tropical Animal Breeding and Disease Research, Haikou, 571100 People’s Republic of China
| | - Guojun Liu
- Institute of Animal Husbandry of Heilongjiang Academy of Agricultural Sciences, Haerbin, Heilongjiang 150086 People’s Republic of China
| | - Zhe Chao
- Institute of Animal Science & Veterinary Medicine, Hainan Academy of Agricultural Sciences, No. 14 Xingdan Road, Haikou, 571100 People’s Republic of China
| | - Weiping Sun
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101 People’s Republic of China
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11
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Parveen A, Wen Y, Roy A, Kumar A. Therapeutic Targeting of PTEN in Duchenne Muscular Dystrophy. Mol Ther 2021; 29:8-9. [PMID: 33338398 DOI: 10.1016/j.ymthe.2020.12.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Affiliation(s)
- Arshiya Parveen
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, USA
| | - Yefei Wen
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, USA
| | - Anirban Roy
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, USA
| | - Ashok Kumar
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, USA.
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12
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Lete MG, Tripathi A, Chandran V, Bankaitis VA, McDermott MI. Lipid transfer proteins and instructive regulation of lipid kinase activities: Implications for inositol lipid signaling and disease. Adv Biol Regul 2020; 78:100740. [PMID: 32992233 PMCID: PMC7986245 DOI: 10.1016/j.jbior.2020.100740] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/16/2020] [Accepted: 06/24/2020] [Indexed: 05/17/2023]
Abstract
Cellular membranes are critical platforms for intracellular signaling that involve complex interfaces between lipids and proteins, and a web of interactions between a multitude of lipid metabolic pathways. Membrane lipids impart structural and functional information in this regulatory circuit that encompass biophysical parameters such as membrane thickness and fluidity, as well as chaperoning the interactions of protein binding partners. Phosphatidylinositol and its phosphorylated derivatives, the phosphoinositides, play key roles in intracellular membrane signaling, and these involvements are translated into an impressively diverse set of biological outcomes. The phosphatidylinositol transfer proteins (PITPs) are key regulators of phosphoinositide signaling. Found in a diverse array of organisms from plants, yeast and apicomplexan parasites to mammals, PITPs were initially proposed to be simple transporters of lipids between intracellular membranes. It now appears increasingly unlikely that the soluble versions of these proteins perform such functions within the cell. Rather, these serve to facilitate the activity of intrinsically biologically insufficient inositol lipid kinases and, in so doing, promote diversification of the biological outcomes of phosphoinositide signaling. The central engine for execution of such functions is the lipid exchange cycle that is a fundamental property of PITPs. How PITPs execute lipid exchange remains very poorly understood. Molecular dynamics simulation approaches are now providing the first atomistic insights into how PITPs, and potentially other lipid-exchange/transfer proteins, operate.
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Affiliation(s)
- Marta G Lete
- Department of Molecular and Cellular Medicine, Texas A&M Health Sciences Center, College Station, TX, 77843-1114, USA; Institute Biofisika (UPV/EHU, CSIC) and University of the Basque Country, Leioa, Spain
| | - Ashutosh Tripathi
- Department of Molecular and Cellular Medicine, Texas A&M Health Sciences Center, College Station, TX, 77843-1114, USA
| | - Vijay Chandran
- Department of Molecular and Cellular Medicine, Texas A&M Health Sciences Center, College Station, TX, 77843-1114, USA
| | - Vytas A Bankaitis
- Department of Molecular and Cellular Medicine, Texas A&M Health Sciences Center, College Station, TX, 77843-1114, USA; Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, 77843-2128, USA; Department of Chemistry, Texas A&M University, College Station, TX, 77840, USA
| | - Mark I McDermott
- Department of Molecular and Cellular Medicine, Texas A&M Health Sciences Center, College Station, TX, 77843-1114, USA.
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13
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Lambert MR, Spinazzola JM, Widrick JJ, Pakula A, Conner JR, Chin JE, Owens JM, Kunkel LM. PDE10A Inhibition Reduces the Manifestation of Pathology in DMD Zebrafish and Represses the Genetic Modifier PITPNA. Mol Ther 2020; 29:1086-1101. [PMID: 33221436 PMCID: PMC7934586 DOI: 10.1016/j.ymthe.2020.11.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 11/04/2020] [Accepted: 11/15/2020] [Indexed: 12/25/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is a severe genetic disorder caused by mutations in the DMD gene. Absence of dystrophin protein leads to progressive degradation of skeletal and cardiac function and leads to premature death. Over the years, zebrafish have been increasingly used for studying DMD and are a powerful tool for drug discovery and therapeutic development. In our study, a birefringence screening assay led to identification of phosphodiesterase 10A (PDE10A) inhibitors that reduced the manifestation of dystrophic muscle phenotype in dystrophin-deficient sapje-like zebrafish larvae. PDE10A has been validated as a therapeutic target by pde10a morpholino-mediated reduction in muscle pathology and improvement in locomotion, muscle, and vascular function as well as long-term survival in sapje-like larvae. PDE10A inhibition in zebrafish and DMD patient-derived myoblasts were also associated with reduction of PITPNA expression that has been previously identified as a protective genetic modifier in two exceptional dystrophin-deficient golden retriever muscular dystrophy (GRMD) dogs that escaped the dystrophic phenotype. The combination of a phenotypic assay and relevant functional assessments in the sapje-like zebrafish enhances the potential for the prospective discovery of DMD therapeutics. Indeed, our results suggest a new application for a PDE10A inhibitor as a potential DMD therapeutic to be investigated in a mouse model of DMD.
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Affiliation(s)
- Matthias R Lambert
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Janelle M Spinazzola
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Jeffrey J Widrick
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Anna Pakula
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - James R Conner
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Janice E Chin
- Rare Disease Research Unit, Pfizer, Cambridge, MA 02139, USA
| | - Jane M Owens
- Rare Disease Research Unit, Pfizer, Cambridge, MA 02139, USA
| | - Louis M Kunkel
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA; The Stem Cell Program, Boston Children's Hospital, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA; The Manton Center for Orphan Disease Research at Boston Children's Hospital, Boston, MA 02115, USA.
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14
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Reid AL, Wang Y, Samani A, Hightower RM, Lopez MA, Gilbert SR, Ianov L, Crossman DK, Dell’Italia LJ, Millay DP, van Groen T, Halade GV, Alexander MS. DOCK3 is a dosage-sensitive regulator of skeletal muscle and Duchenne muscular dystrophy-associated pathologies. Hum Mol Genet 2020; 29:2855-2871. [PMID: 32766788 PMCID: PMC7566544 DOI: 10.1093/hmg/ddaa173] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/07/2020] [Accepted: 07/29/2020] [Indexed: 12/26/2022] Open
Abstract
DOCK3 is a member of the DOCK family of guanine nucleotide exchange factors that regulate cell migration, fusion and viability. Previously, we identified a dysregulated miR-486/DOCK3 signaling cascade in dystrophin-deficient muscle, which resulted in the overexpression of DOCK3; however, little is known about the role of DOCK3 in muscle. Here, we characterize the functional role of DOCK3 in normal and dystrophic skeletal muscle. Utilizing Dock3 global knockout (Dock3 KO) mice, we found that the haploinsufficiency of Dock3 in Duchenne muscular dystrophy mice improved dystrophic muscle pathologies; however, complete loss of Dock3 worsened muscle function. Adult Dock3 KO mice have impaired muscle function and Dock3 KO myoblasts are defective for myogenic differentiation. Transcriptomic analyses of Dock3 KO muscles reveal a decrease in myogenic factors and pathways involved in muscle differentiation. These studies identify DOCK3 as a novel modulator of muscle health and may yield therapeutic targets for treating dystrophic muscle symptoms.
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Affiliation(s)
- Andrea L Reid
- Division of Neurology, Department of Pediatrics, The University of Alabama at Birmingham and Children’s of Alabama, Birmingham, AL 35294, USA
| | - Yimin Wang
- Division of Neurology, Department of Pediatrics, The University of Alabama at Birmingham and Children’s of Alabama, Birmingham, AL 35294, USA
| | - Adrienne Samani
- Division of Neurology, Department of Pediatrics, The University of Alabama at Birmingham and Children’s of Alabama, Birmingham, AL 35294, USA
| | - Rylie M Hightower
- Division of Neurology, Department of Pediatrics, The University of Alabama at Birmingham and Children’s of Alabama, Birmingham, AL 35294, USA
- UAB Center for Exercise Medicine, Birmingham, AL 35294, USA
| | - Michael A Lopez
- Division of Neurology, Department of Pediatrics, The University of Alabama at Birmingham and Children’s of Alabama, Birmingham, AL 35294, USA
- UAB Center for Exercise Medicine, Birmingham, AL 35294, USA
| | - Shawn R Gilbert
- Department of Orthopedic Surgery, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Lara Ianov
- Civitan International Research Center, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - David K Crossman
- Department of Genetics, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Louis J Dell’Italia
- Birmingham Veteran Affairs Medical Center, Birmingham, AL 35233, USA
- Division of Cardiovascular Disease, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
- Department of Cell, Developmental, and Integrative Biology, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Douglas P Millay
- Division of Molecular Cardiovascular Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Thomas van Groen
- Department of Cell, Developmental, and Integrative Biology, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Ganesh V Halade
- Division of Cardiovascular Sciences, Department of Medicine, University of South Florida, Tampa, FL 33602, USA
| | - Matthew S Alexander
- Division of Neurology, Department of Pediatrics, The University of Alabama at Birmingham and Children’s of Alabama, Birmingham, AL 35294, USA
- UAB Center for Exercise Medicine, Birmingham, AL 35294, USA
- Civitan International Research Center, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
- Department of Genetics, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
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15
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Yue F, Song C, Huang D, Narayanan N, Qiu J, Jia Z, Yuan Z, Oprescu SN, Roseguini BT, Deng M, Kuang S. PTEN Inhibition Ameliorates Muscle Degeneration and Improves Muscle Function in a Mouse Model of Duchenne Muscular Dystrophy. Mol Ther 2020; 29:132-148. [PMID: 33068545 DOI: 10.1016/j.ymthe.2020.09.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/10/2020] [Accepted: 09/20/2020] [Indexed: 12/15/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is caused by a mutation of the muscle membrane protein dystrophin and characterized by severe degeneration of myofibers, progressive muscle wasting, loss of mobility, and, ultimately, cardiorespiratory failure and premature death. Currently there is no cure for DMD. Herein, we report that skeletal muscle-specific knockout (KO) of the phosphatase and tensin homolog (Pten) gene in an animal model of DMD (mdx mice) alleviates myofiber degeneration and restores muscle function without increasing tumor incidence. Specifically, Pten KO normalizes myofiber size and prevents muscular atrophy, and it improves grip strength and exercise performance in mdx mice. Pten KO also reduces fibrosis and inflammation, and it ameliorates muscle pathology in mdx mice. Unbiased RNA sequencing reveals that Pten KO upregulates extracellular matrix and basement membrane components positively correlated with wound healing and suppresses negative regulators of wound healing and lipid biosynthesis, thus improving the integrity of muscle basement membrane at the ultrastructural level. Importantly, pharmacological inhibition of PTEN similarly ameliorates muscle pathology and improves muscle integrity and function in mdx mice. Our findings provide evidence that PTEN inhibition may represent a potential therapeutic strategy to restore muscle function in DMD.
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Affiliation(s)
- Feng Yue
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA.
| | - Changyou Song
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Di Huang
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907, USA
| | - Naagarajan Narayanan
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907, USA
| | - Jiamin Qiu
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Zhihao Jia
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Zhengrong Yuan
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Stephanie N Oprescu
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA; Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Bruno T Roseguini
- Department of Health and Kinesiology, Purdue University, West Lafayette, IN 47907, USA
| | - Meng Deng
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907, USA
| | - Shihuan Kuang
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA; Center for Cancer Research, Purdue University, West Lafayette, IN 47907, USA.
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16
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Barthélémy I, Calmels N, Weiss RB, Tiret L, Vulin A, Wein N, Peccate C, Drougard C, Beroud C, Deburgrave N, Thibaud JL, Escriou C, Punzón I, Garcia L, Kaplan JC, Flanigan KM, Leturcq F, Blot S. X-linked muscular dystrophy in a Labrador Retriever strain: phenotypic and molecular characterisation. Skelet Muscle 2020; 10:23. [PMID: 32767978 PMCID: PMC7412789 DOI: 10.1186/s13395-020-00239-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 07/09/2020] [Indexed: 12/24/2022] Open
Abstract
Background Canine models of Duchenne muscular dystrophy (DMD) are a valuable tool to evaluate potential therapies because they faithfully reproduce the human disease. Several cases of dystrophinopathies have been described in canines, but the Golden Retriever muscular dystrophy (GRMD) model remains the most used in preclinical studies. Here, we report a new spontaneous dystrophinopathy in a Labrador Retriever strain, named Labrador Retriever muscular dystrophy (LRMD). Methods A colony of LRMD dogs was established from spontaneous cases. Fourteen LRMD dogs were followed-up and compared to the GRMD standard using several functional tests. The disease causing mutation was studied by several molecular techniques and identified using RNA-sequencing. Results The main clinical features of the GRMD disease were found in LRMD dogs; the functional tests provided data roughly overlapping with those measured in GRMD dogs, with similar inter-individual heterogeneity. The LRMD causal mutation was shown to be a 2.2-Mb inversion disrupting the DMD gene within intron 20 and involving the TMEM47 gene. In skeletal muscle, the Dp71 isoform was ectopically expressed, probably as a consequence of the mutation. We found no evidence of polymorphism in either of the two described modifier genes LTBP4 and Jagged1. No differences were found in Pitpna mRNA expression levels that would explain the inter-individual variability. Conclusions This study provides a full comparative description of a new spontaneous canine model of dystrophinopathy, found to be phenotypically equivalent to the GRMD model. We report a novel large DNA mutation within the DMD gene and provide evidence that LRMD is a relevant model to pinpoint additional DMD modifier genes.
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Affiliation(s)
- Inès Barthélémy
- U955 - IMRB, Team 10 - Biology of the neuromuscular system, Inserm, UPEC, EFS, Ecole nationale vétérinaire d'Alfort, 94700, Maisons-Alfort, France
| | - Nadège Calmels
- Laboratoire de biochimie et génétique moléculaire, hôpital Cochin, AP-HP, université Paris Descartes-Sorbonne Paris Cité, Paris, France.,Laboratoire de Diagnostic Génétique-Institut de Génétique Médicale d'Alsace, Hôpitaux Universitaires de Strasbourg, 1 Place de L'Hôpital, 67091, Strasbourg, France
| | - Robert B Weiss
- Department of Human Genetics, The University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Laurent Tiret
- U955 - IMRB, Team 10 - Biology of the neuromuscular system, Inserm, UPEC, EFS, Ecole nationale vétérinaire d'Alfort, 94700, Maisons-Alfort, France
| | - Adeline Vulin
- SQY Therapeutics, Université de Versailles Saint-Quentin-en-Yvelines, Montigny le Bretonneux, France
| | - Nicolas Wein
- The Center for Gene Therapy, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio, USA.,Department of Pediatrics, The Ohio State University, Columbus, Ohio, USA
| | - Cécile Peccate
- SQY Therapeutics, Université de Versailles Saint-Quentin-en-Yvelines, Montigny le Bretonneux, France.,Sorbonne Universités, UPMC Université Paris 06, INSERM UMRS974, Centre de Recherche en Myologie, Institut de Myologie, G.H. Pitié Salpêtrière, Paris, France
| | - Carole Drougard
- U955 - IMRB, Team 10 - Biology of the neuromuscular system, Inserm, UPEC, EFS, Ecole nationale vétérinaire d'Alfort, 94700, Maisons-Alfort, France
| | - Christophe Beroud
- Aix Marseille Université, INSERM, MMG, Bioinformatics & Genetics, Marseille, France.,APHM, Hôpital Timone Enfants, Laboratoire de Génétique Moléculaire, Marseille, France
| | - Nathalie Deburgrave
- Laboratoire de biochimie et génétique moléculaire, hôpital Cochin, AP-HP, université Paris Descartes-Sorbonne Paris Cité, Paris, France
| | - Jean-Laurent Thibaud
- U955 - IMRB, Team 10 - Biology of the neuromuscular system, Inserm, UPEC, EFS, Ecole nationale vétérinaire d'Alfort, 94700, Maisons-Alfort, France
| | - Catherine Escriou
- U955 - IMRB, Team 10 - Biology of the neuromuscular system, Inserm, UPEC, EFS, Ecole nationale vétérinaire d'Alfort, 94700, Maisons-Alfort, France
| | - Isabel Punzón
- U955 - IMRB, Team 10 - Biology of the neuromuscular system, Inserm, UPEC, EFS, Ecole nationale vétérinaire d'Alfort, 94700, Maisons-Alfort, France
| | - Luis Garcia
- Université de Versailles Saint-Quentin-en-Yvelines, U1179 INSERM, UFR des Sciences de la Santé, Montigny le Bretonneux, France
| | - Jean-Claude Kaplan
- Laboratoire de biochimie et génétique moléculaire, hôpital Cochin, AP-HP, université Paris Descartes-Sorbonne Paris Cité, Paris, France
| | - Kevin M Flanigan
- The Center for Gene Therapy, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio, USA.,Department of Pediatrics, The Ohio State University, Columbus, Ohio, USA
| | - France Leturcq
- Laboratoire de biochimie et génétique moléculaire, hôpital Cochin, AP-HP, université Paris Descartes-Sorbonne Paris Cité, Paris, France.,Sorbonne Universités, UPMC Université Paris 06, INSERM UMRS974, Centre de Recherche en Myologie, Institut de Myologie, G.H. Pitié Salpêtrière, Paris, France
| | - Stéphane Blot
- U955 - IMRB, Team 10 - Biology of the neuromuscular system, Inserm, UPEC, EFS, Ecole nationale vétérinaire d'Alfort, 94700, Maisons-Alfort, France.
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17
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Barthélémy I, Hitte C, Tiret L. The Dog Model in the Spotlight: Legacy of a Trustful Cooperation. J Neuromuscul Dis 2020; 6:421-451. [PMID: 31450509 PMCID: PMC6918919 DOI: 10.3233/jnd-190394] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Dogs have long been used as a biomedical model system and in particular as a preclinical proof of concept for innovative therapies before translation to humans. A recent example of the utility of this animal model is the promising myotubularin gene delivery in boys affected by X-linked centronuclear myopathy after successful systemic, long-term efficient gene therapy in Labrador retrievers. Mostly, this is due to unique features that make dogs an optimal system. The continuous emergence of spontaneous inherited disorders enables the identification of reliable complementary molecular models for human neuromuscular disorders (NMDs). Dogs’ characteristics including size, lifespan and unprecedented medical care level allow a comprehensive longitudinal description of diseases. Moreover, the highly similar pathogenic mechanisms with human patients yield to translational robustness. Finally, interindividual phenotypic heterogeneity between dogs helps identifying modifiers and anticipates precision medicine issues. This review article summarizes the present list of molecularly characterized dog models for NMDs and provides an exhaustive list of the clinical and paraclinical assays that have been developed. This toolbox offers scientists a sensitive and reliable system to thoroughly evaluate neuromuscular function, as well as efficiency and safety of innovative therapies targeting these NMDs. This review also contextualizes the model by highlighting its unique genetic value, shaped by the long-term coevolution of humans and domesticated dogs. Because the dog is one of the most protected research animal models, there is considerable opposition to include it in preclinical projects, posing a threat to the use of this model. We thus discuss ethical issues, emphasizing that unlike many other models, the dog also benefits from its contribution to comparative biomedical research with a drastic reduction in the prevalence of morbid alleles in the breeding stock and an improvement in medical care.
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Affiliation(s)
- Inès Barthélémy
- U955 - IMRB, Team 10 - Biology of the neuromuscular system, Inserm, UPEC, EFS, École nationale vétérinaire d'Alfort, Maisons-Alfort, France
| | - Christophe Hitte
- CNRS, University of Rennes 1, UMR 6290, IGDR, Faculty of Medicine, SFR Biosit, Rennes, France
| | - Laurent Tiret
- U955 - IMRB, Team 10 - Biology of the neuromuscular system, Inserm, UPEC, EFS, École nationale vétérinaire d'Alfort, Maisons-Alfort, France
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Nam TS, Zhang J, Chandrasekaran G, Jeong IY, Li W, Lee SH, Kang KW, Maeng JS, Kang H, Shin HY, Park HC, Kim S, Choi SY, Kim MK. A zebrafish model of nondystrophic myotonia with sodium channelopathy. Neurosci Lett 2020; 714:134579. [PMID: 31669315 DOI: 10.1016/j.neulet.2019.134579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 10/07/2019] [Accepted: 10/21/2019] [Indexed: 11/17/2022]
Abstract
Nondystrophic myotonias are disorders of Na+ (Nav1.4 or SCN4A) and Cl- (CLCN1) channels in skeletal muscles, and frequently show phenotype heterogeneity. The molecular mechanism underlying their pathophysiology and phenotype heterogeneity remains unclear. As zebrafish models have been recently exploited for studies of the pathophysiology and phenotype heterogeneity of various human genetic diseases, a zebrafish model may be useful for delineating nondystrophic myotonias. Here, we generated transgenic zebrafish expressing a human mutant allele of SCN4A, referred to as Tg(mylpfa:N440K), and needle electromyography revealed increased number of myotonic discharges and positive sharp waves in the muscles of Tg(mylpfa:N440K) than in controls. In addition, forced exercise test at a water temperature of 24 °C showed a decrease in the distance moved, time spent in and number of visits to the zone with stronger swimming resistance. Finally, a forced exercise test at a water temperature of 18 °C exhibited a higher number of dive-bombing periods and drifting-down behavior than in controls. These findings indicate that Tg(mylpfa:N440K) is a good vertebrate model of exercise- and cold-induced human nondystrophic myotonias. This zebrafish model may contribute to provide insight into the pathophysiology of myotonia in sodium channelopathy and could be used to explore a new therapeutic avenue.
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Affiliation(s)
- Tai-Seung Nam
- Department of Neurology, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea
| | - Jun Zhang
- Department of Biomedical Sciences, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea
| | | | - In Young Jeong
- Department of Biomedical Sciences, Korea University, Ansan, 15355, Republic of Korea
| | - Wenting Li
- Department of Biomedical Sciences, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea
| | - So-Hyun Lee
- Department of Biomedical Sciences, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea
| | - Kyung-Wook Kang
- Department of Neurology, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea
| | - Jin-Soo Maeng
- Research Group of Bioprocess Engineering, Korea Food Research Institute, Wanju-gun, 55365, Republic of Korea; Center for Convergent Research of Emerging Virus Infection, Korea Institute of Chemical Technology, Daejeon, 34114, Republic of Korea
| | - Hyuno Kang
- Korea Basic Science Institute, Gwangju Center, Gwangju, 61186, Republic of Korea
| | - Hee-Young Shin
- Department of Biomedical Sciences, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea
| | - Hae-Chul Park
- Department of Biomedical Sciences, Korea University, Ansan, 15355, Republic of Korea
| | - Sohee Kim
- Department of Robotics Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea.
| | - Seok-Yong Choi
- Department of Biomedical Sciences, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea.
| | - Myeong-Kyu Kim
- Department of Neurology, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea.
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Zhang Y, Yang W, Wen G, Wu Y, Jing Z, Li D, Tang M, Liu G, Wei X, Zhong Y, Li Y, Deng Y. Application whole exome sequencing for the clinical molecular diagnosis of patients with Duchenne muscular dystrophy; identification of four novel nonsense mutations in four unrelated Chinese DMD patients. Mol Genet Genomic Med 2019; 7:e622. [PMID: 30938079 PMCID: PMC6503051 DOI: 10.1002/mgg3.622] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 01/19/2019] [Accepted: 02/11/2019] [Indexed: 12/17/2022] Open
Abstract
Background Duchenne muscular dystrophy (DMD) is the most common form of inherited muscular dystrophy. Germline mutations in dystrophin (DMD) gene cause DMD, with a X‐linked recessive mode of inheritance. Patients with DMD are usually characterized by weakness of muscle, usually started since childhood and gradually the patient will unable to stand and walk. Methods In our present study, we identified four unrelated Chinese patients with DMD from four Chinese families. Whole exome sequencing was performed for genetic molecular analysis for these probands. Results Whole exome sequencing and confirmatory Sanger sequencing identified four novel nonsense mutations in these four unrelated Chinese patients, respectively. All these four mutations lead to the formation of a truncated DMD protein by formation of a premature stop codon. According to the variant interpretation guidelines of American College of Medical Genetics and Genomics (ACMG), these four novel nonsense mutations are categorized as “likely pathogenic” variants. Conclusion Our present finding not only identified four novel loss‐of‐function mutations in dystrophin (DMD) gene but also strongly emphasized the significance of whole exome sequencing as the most efficient way of identifying the candidate genes and mutations which enables us for easy and rapid clinical diagnosis, follow‐up, and management of DMD patients.
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Affiliation(s)
- Yan Zhang
- Department of Pathology, Shenzhen Longhua District Maternity & Child Healthcare Hospital, Shenzhen, P.R. China
| | - Weikang Yang
- Department of Prevention and health care, Shenzhen Longhua District Maternity & Child Healthcare Hospital, Shenzhen, China
| | - Guoming Wen
- Department of Outpatient, Shenzhen Longhua District Maternity and Child Healthcare Hospital, Shenzhen, China
| | - Yanxia Wu
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, Guangzhou, P.R. China
| | - Zhiliang Jing
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, Guangzhou, P.R. China
| | - Dazhou Li
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, Guangzhou, P.R. China
| | - Minshan Tang
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, Guangzhou, P.R. China
| | - Guanglong Liu
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, Guangzhou, P.R. China
| | - Xuxuan Wei
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, Guangzhou, P.R. China
| | - Yan Zhong
- Department of Pathology, Shenzhen Longhua District Maternity & Child Healthcare Hospital, Shenzhen, P.R. China
| | - Yanhua Li
- Department of Pathology, Shenzhen Longhua District Maternity & Child Healthcare Hospital, Shenzhen, P.R. China
| | - Yongjian Deng
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, Guangzhou, P.R. China
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Multiple Exon Skipping in the Duchenne Muscular Dystrophy Hot Spots: Prospects and Challenges. J Pers Med 2018; 8:jpm8040041. [PMID: 30544634 PMCID: PMC6313462 DOI: 10.3390/jpm8040041] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 11/24/2018] [Accepted: 12/04/2018] [Indexed: 12/19/2022] Open
Abstract
Duchenne muscular dystrophy (DMD), a fatal X-linked recessive disorder, is caused mostly by frame-disrupting, out-of-frame deletions in the dystrophin (DMD) gene. Antisense oligonucleotide-mediated exon skipping is a promising therapy for DMD. Exon skipping aims to convert out-of-frame mRNA to in-frame mRNA and induce the production of internally-deleted dystrophin as seen in the less severe Becker muscular dystrophy. Currently, multiple exon skipping has gained special interest as a new therapeutic modality for this approach. Previous retrospective database studies represented a potential therapeutic application of multiple exon skipping. Since then, public DMD databases have become more useful with an increase in patient registration and advances in molecular diagnosis. Here, we provide an update on DMD genotype-phenotype associations using a global DMD database and further provide the rationale for multiple exon skipping development, particularly for exons 45–55 skipping and an emerging therapeutic concept, exons 3–9 skipping. Importantly, this review highlights the potential of multiple exon skipping for enabling the production of functionally-corrected dystrophin and for treating symptomatic patients not only with out-of-frame deletions but also those with in-frame deletions. We will also discuss prospects and challenges in multiple exon skipping therapy, referring to recent progress in antisense chemistry and design, as well as disease models.
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21
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Grabon A, Bankaitis VA, McDermott MI. The interface between phosphatidylinositol transfer protein function and phosphoinositide signaling in higher eukaryotes. J Lipid Res 2018; 60:242-268. [PMID: 30504233 DOI: 10.1194/jlr.r089730] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 11/12/2018] [Indexed: 12/22/2022] Open
Abstract
Phosphoinositides are key regulators of a large number of diverse cellular processes that include membrane trafficking, plasma membrane receptor signaling, cell proliferation, and transcription. How a small number of chemically distinct phosphoinositide signals are functionally amplified to exert specific control over such a diverse set of biological outcomes remains incompletely understood. To this end, a novel mechanism is now taking shape, and it involves phosphatidylinositol (PtdIns) transfer proteins (PITPs). The concept that PITPs exert instructive regulation of PtdIns 4-OH kinase activities and thereby channel phosphoinositide production to specific biological outcomes, identifies PITPs as central factors in the diversification of phosphoinositide signaling. There are two evolutionarily distinct families of PITPs: the Sec14-like and the StAR-related lipid transfer domain (START)-like families. Of these two families, the START-like PITPs are the least understood. Herein, we review recent insights into the biochemical, cellular, and physiological function of both PITP families with greater emphasis on the START-like PITPs, and we discuss the underlying mechanisms through which these proteins regulate phosphoinositide signaling and how these actions translate to human health and disease.
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Affiliation(s)
- Aby Grabon
- E. L. Wehner-Welch Laboratory, Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, TX 77843-1114
| | - Vytas A Bankaitis
- E. L. Wehner-Welch Laboratory, Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, TX 77843-1114
| | - Mark I McDermott
- E. L. Wehner-Welch Laboratory, Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, TX 77843-1114
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Recent advances and new insights into muscular lymphangiogenesis in health and disease. Life Sci 2018; 211:261-269. [DOI: 10.1016/j.lfs.2018.09.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 09/19/2018] [Accepted: 09/22/2018] [Indexed: 11/22/2022]
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Hildyard JC, Taylor-Brown F, Massey C, Wells DJ, Piercy RJ. Determination of qPCR Reference Genes Suitable for Normalizing Gene Expression in a Canine Model of Duchenne Muscular Dystrophy. J Neuromuscul Dis 2018; 5:177-191. [DOI: 10.3233/jnd-170267] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- John C.W. Hildyard
- Department of Clinical Science and Services, Comparative Neuromuscular Diseases Laboratory, Royal Veterinary College, London, UK
| | - Frances Taylor-Brown
- Department of Clinical Science and Services, Comparative Neuromuscular Diseases Laboratory, Royal Veterinary College, London, UK
| | - Claire Massey
- Department of Clinical Science and Services, Comparative Neuromuscular Diseases Laboratory, Royal Veterinary College, London, UK
| | - Dominic J. Wells
- Department of Comparative Biomedical Sciences, Royal Veterinary College, London, UK
| | - Richard J. Piercy
- Department of Clinical Science and Services, Comparative Neuromuscular Diseases Laboratory, Royal Veterinary College, London, UK
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Goody M, Jurczyszak D, Kim C, Henry C. Influenza A Virus Infection Damages Zebrafish Skeletal Muscle and Exacerbates Disease in Zebrafish Modeling Duchenne Muscular Dystrophy. PLOS CURRENTS 2017; 9. [PMID: 29188128 PMCID: PMC5693338 DOI: 10.1371/currents.md.8a7e35c50fa2b48156799d3c39788175] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Both genetic and infectious diseases can result in skeletal muscle degeneration, inflammation, pain, and/or weakness. Duchenne muscular dystrophy (DMD) is the most common congenital muscle disease. DMD causes progressive muscle wasting due to mutations in Dystrophin. Influenza A and B viruses are frequently associated with muscle complications, especially in children. Infections activate an immune response and immunosuppressant drugs reduce DMD symptoms. These data suggest that the immune system may contribute to muscle pathology. However, roles of the immune response in DMD and Influenza muscle complications are not well understood. Zebrafish with dmd mutations are a well-characterized model in which to study the molecular and cellular mechanisms of DMD pathology. We recently showed that zebrafish can be infected by human Influenza A virus (IAV). Thus, the zebrafish is a powerful system with which to ask questions about the etiology and mechanisms of muscle damage due to genetic and/or infectious diseases. METHODS We infected zebrafish with IAV and assayed muscle tissue structure, sarcolemma integrity, cell-extracellular matrix (ECM) attachment, and molecular and cellular markers of inflammation in response to IAV infection alone or in the context of DMD. RESULTS We find that IAV-infected zebrafish display mild muscle degeneration with sarcolemma damage and compromised ECM adhesion. An innate immune response is elicited in muscle in IAV-infected zebrafish: NFkB signaling is activated, pro-inflammatory cytokine expression is upregulated, and neutrophils localize to sites of muscle damage. IAV-infected dmd mutants display more severe muscle damage than would be expected from an additive effect of dmd mutation and IAV infection, suggesting that muscle damage caused by Dystrophin-deficiency and IAV infection is synergistic. DISCUSSION These data demonstrate the importance of preventing IAV infections in individuals with genetic muscle diseases. Elucidating the mechanisms of immune-mediated muscle damage will not only apply to DMD and IAV, but also to other conditions where the immune system, inflammation, and muscle tissue are known to be affected, such as autoimmune diseases, cancer, and aging.
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Affiliation(s)
| | - Denise Jurczyszak
- Department of Molecular and Biomedical Sciences, University of Maine, Orono, ME 04469, USA
| | | | - Clarissa Henry
- Graduate School for Biomedical Sciences and Engineering, School of Biology and Ecology, University of Maine. Orono, Main, USA
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