1
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Pelletier AN, Sanchez GP, Izmirly A, Watson M, Di Pucchio T, Carvalho KI, Filali-Mouhim A, Paramithiotis E, Timenetsky MDCST, Precioso AR, Kalil J, Diamond MS, Haddad EK, Kallas EG, Sekaly RP. A pre-vaccination immune metabolic interplay determines the protective antibody response to a dengue virus vaccine. Cell Rep 2024; 43:114370. [PMID: 38900640 DOI: 10.1016/j.celrep.2024.114370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 02/05/2024] [Accepted: 05/31/2024] [Indexed: 06/22/2024] Open
Abstract
Protective immunity to dengue virus (DENV) requires antibody response to all four serotypes. Systems vaccinology identifies a multi-OMICs pre-vaccination signature and mechanisms predictive of broad antibody responses after immunization with a tetravalent live attenuated DENV vaccine candidate (Butantan-DV/TV003). Anti-inflammatory pathways, including TGF-β signaling expressed by CD68low monocytes, and the metabolites phosphatidylcholine (PC) and phosphatidylethanolamine (PE) positively correlate with broadly neutralizing antibody responses against DENV. In contrast, expression of pro-inflammatory pathways and cytokines (IFN and IL-1) in CD68hi monocytes and primary and secondary bile acids negatively correlates with broad DENV-specific antibody responses. Induction of TGF-β and IFNs is done respectively by PC/PE and bile acids in CD68low and CD68hi monocytes. The inhibition of viral sensing by PC/PE-induced TGF-β is confirmed in vitro. Our studies show that the balance between metabolites and the pro- or anti-inflammatory state of innate immune cells drives broad and protective B cell response to a live attenuated dengue vaccine.
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Affiliation(s)
- Adam-Nicolas Pelletier
- RPM Bioinfo Solutions, Sainte-Thérèse, QC, Canada; Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Gabriela Pacheco Sanchez
- Pathology Advanced Translational Research Unit, Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Abdullah Izmirly
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | | | - Tiziana Di Pucchio
- Pathology Advanced Translational Research Unit, Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Karina Inacio Carvalho
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH, USA; Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - Abdelali Filali-Mouhim
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), Montreal, QC, Canada
| | | | | | | | - Jorge Kalil
- Laboratory of Immunology, Heart Institute (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HCFMUSP), São Paulo, SP, Brazil; Institute for Investigation in Immunology-Instituto Nacional de Ciência e Tecnologia-iii-INCT, São Paulo, SP, Brazil
| | - Michael S Diamond
- Departments of Medicine, Molecular Microbiology, and Pathology & Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Elias K Haddad
- Department of Medicine and Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Esper G Kallas
- Instituto Butantan, São Paulo, Brazil; Department of Infectious and Parasitic Diseases, Hospital das Clínicas, School of Medicine, University of Sao Paulo, São Paulo 01246-903, Brazil
| | - Rafick Pierre Sekaly
- Pathology Advanced Translational Research Unit, Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA.
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2
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Zhao YQ, Jin HR, Kim D, Jung SH, Liu S, Wan J, Lo HY, Fu XQ, Wang Q, Hao C, Bellail AC. SUMO1 degrader induces ER stress and ROS accumulation through deSUMOylation of TCF4 and inhibition of its transcription of StarD7 in colon cancer. Mol Carcinog 2023; 62:1249-1262. [PMID: 37191369 PMCID: PMC10524896 DOI: 10.1002/mc.23560] [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: 11/16/2022] [Revised: 02/09/2023] [Accepted: 05/04/2023] [Indexed: 05/17/2023]
Abstract
Small molecule degraders of small ubiquitin-related modifier 1 (SUMO1) induce SUMO1 degradation in colon cancer cells and inhibits the cancer cell growth; however, it is unclear how SUMO1 degradation leads to the anticancer activity of the degraders. Genome-wide CRISPR-Cas9 knockout screen has identified StAR-related lipid transfer domain containing 7 (StarD7) as a critical gene for the degrader's anticancer activity. Here, we show that both StarD7 mRNA and protein are overexpressed in human colon cancer and its knockout significantly reduces colon cancer cell growth and xenograft progression. The treatment with the SUMO1 degrader lead compound HB007 reduces StarD7 mRNA and protein levels and increases endoplasmic reticulum (ER) stress and reactive oxygen species (ROS) production in colon cancer cells and three-dimensional (3D) organoids. The study further provides a novel mechanism of the compound anticancer activity that SUMO1 degrader-induced decrease of StarD7 occur through degradation of SUMO1, deSUMOylation and degradation of T cell-specific transcription 4 (TCF4) and thereby inhibition of its transcription of StarD7 in colon cancer cells, 3D organoids and patient-derived xenografts (PDX).
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Affiliation(s)
- Yin Quan Zhao
- Department of Gastric and Colorectal Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, China
- School of Life Sciences, Jilin University, Changchun, Jilin Province, 130012, China
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Hong Ri Jin
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Daeho Kim
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Sung Han Jung
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Sheng Liu
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Jun Wan
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Ho-Yin Lo
- Synovel Laboratory LLC, Danbury, CT 06811, USA
| | - Xue Qi Fu
- School of Life Sciences, Jilin University, Changchun, Jilin Province, 130012, China
| | - Quan Wang
- Department of Gastric and Colorectal Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, China
| | - Chunhai Hao
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Anita C. Bellail
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- HB Therapeutics Inc. Indianapolis, IN 46202, USA
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3
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Depienne C, van den Maagdenberg AMJM, Kühnel T, Ishiura H, Corbett MA, Tsuji S. Insights into familial adult myoclonus epilepsy pathogenesis: How the same repeat expansion in six unrelated genes may lead to cortical excitability. Epilepsia 2023. [PMID: 36622139 DOI: 10.1111/epi.17504] [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: 12/06/2022] [Revised: 12/22/2022] [Accepted: 01/06/2023] [Indexed: 01/10/2023]
Abstract
Familial adult myoclonus epilepsy (FAME) results from the same pathogenic TTTTA/TTTCA pentanucleotide repeat expansion in six distinct genes encoding proteins with different subcellular localizations and very different functions, which poses the issue of what causes the neurobiological disturbances that lead to the clinical phenotype. Postmortem and electrophysiological studies have pointed to cortical hyperexcitability as well as dysfunction and neurodegeneration of both the cortex and cerebellum of FAME subjects. FAME expansions, contrary to the same expansion in DAB1 causing spinocerebellar ataxia type 37, seem to have no or limited impact on their recipient gene expression, which suggests a pathophysiological mechanism independent of the gene and its function. Current hypotheses include toxicity of the RNA molecules carrying UUUCA repeats, or toxicity of polypeptides encoded by the repeats, a mechanism known as repeat-associated non-AUG translation. The analysis of postmortem brains of FAME1 expansion (in SAMD12) carriers has revealed the presence of RNA foci that could be formed by the aggregation of RNA molecules with abnormal UUUCA repeats, but evidence is still lacking for other FAME subtypes. Even when the expansion is located in a gene ubiquitously expressed, expression of repeats remains undetectable in peripheral tissues (blood, skin). Therefore, the development of appropriate cellular models (induced pluripotent stem cell-derived neurons) or the study of affected tissues in patients is required to elucidate how FAME repeat expansions located in unrelated genes lead to disease.
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Affiliation(s)
- Christel Depienne
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Arn M J M van den Maagdenberg
- Department of Human Genetics, Leiden University Medical Center, Leiden, the Netherlands.,Department of Neurology, Leiden University Medical Center, Leiden, the Netherlands
| | - Theresa Kühnel
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Hiroyuki Ishiura
- Department of Neurology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan.,Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Mark A Corbett
- Robinson Research Institute, University of Adelaide, Adelaide Medical School, Adelaide, South Australia, Australia
| | - Shoji Tsuji
- Department of Neurology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan.,Institute of Medical Genomics, International University of Health and Welfare, Chiba, Japan
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4
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Peters L, Depienne C, Klebe S. Familial adult myoclonic epilepsy (FAME): clinical features, molecular characteristics, pathophysiological aspects and diagnostic work-up. MED GENET-BERLIN 2021; 33:311-318. [PMID: 38835431 PMCID: PMC11006339 DOI: 10.1515/medgen-2021-2100] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 11/16/2021] [Indexed: 06/06/2024]
Abstract
Familial adult myoclonic epilepsy (FAME) is a rare autosomal dominant disorder characterized by myoclonus and seizures. The genetic variant underlying FAME is an intronic repeat expansion composed of two different pentamers: an expanded TTTTA, which is the motif originally present at the locus, and an insertion of TTTCA repeats, which is usually located at the 3' end and likely corresponds to the pathogenic part of the expansion. This repeat expansion has been identified so far in six genes located on different chromosomes, which remarkably encode proteins with distinct cellular localizations and functions. Although the exact pathophysiological mechanisms remain to be clarified, it is likely that FAME repeat expansions lead to disease independently of the gene where they occur. We herein review the clinical and molecular characteristics of this singular genetic disorder, which interestingly shares clinical features with other more common neurological disorders whose etiology remains mainly unsolved.
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Affiliation(s)
- Lorenz Peters
- Department of Neurology, University Hospital Essen, Essen, Germany
| | - Christel Depienne
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Stephan Klebe
- Department of Neurology, University Hospital Essen, Essen, Germany
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5
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Asif K, Memeo L, Palazzolo S, Frión-Herrera Y, Parisi S, Caligiuri I, Canzonieri V, Granchi C, Tuccinardi T, Rizzolio F. STARD3: A Prospective Target for Cancer Therapy. Cancers (Basel) 2021; 13:4693. [PMID: 34572920 PMCID: PMC8472075 DOI: 10.3390/cancers13184693] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 09/10/2021] [Indexed: 12/24/2022] Open
Abstract
Cancer is one of the major causes of death in developed countries and current therapies are based on surgery, chemotherapeutic agents, and radiation. To overcome side effects induced by chemo- and radiotherapy, in recent decades, targeted therapies have been proposed in second and even first lines. Targeted drugs act on the essential pathways involved in tumor induction, progression, and metastasis, basically all the hallmark of cancers. Among emerging pathways, the cholesterol metabolic pathway is a strong candidate for this purpose. Cancer cells have an accelerated metabolic rate and require a continuous supply of cholesterol for cell division and membrane renewal. Steroidogenic acute regulatory related lipid transfer (START) proteins are a family of proteins involved in the transfer of lipids and some of them are important in non-vesicular cholesterol transportation within the cell. The alteration of their expression levels is implicated in several diseases, including cancers. In this review, we report the latest discoveries on StAR-related lipid transfer protein domain 3 (STARD3), a member of the START family, which has a potential role in cancer, focusing on the structural and biochemical characteristics and mechanisms that regulate its activity. The role of the STARD3 protein as a molecular target for the development of cancer therapies is also discussed. As STARD3 is a key protein in the cholesterol movement in cancer cells, it is of interest to identify inhibitors able to block its activity.
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Affiliation(s)
- Kanwal Asif
- Department of Molecular Sciences and Nanosystems, PhD School in Science and Technology of Bio and Nanomaterials, Ca’ Foscari University of Venice, 30172 Venice, Italy;
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, 33081 Aviano, Italy; (S.P.); (S.P.); (V.C.)
| | - Lorenzo Memeo
- Department of Experimental Oncology, Mediterranean Institute of Oncology, 95029 Catania, Italy;
| | - Stefano Palazzolo
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, 33081 Aviano, Italy; (S.P.); (S.P.); (V.C.)
| | - Yahima Frión-Herrera
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, 30172 Venice, Italy; or
| | - Salvatore Parisi
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, 33081 Aviano, Italy; (S.P.); (S.P.); (V.C.)
| | - Isabella Caligiuri
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, 33081 Aviano, Italy; (S.P.); (S.P.); (V.C.)
| | - Vincenzo Canzonieri
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, 33081 Aviano, Italy; (S.P.); (S.P.); (V.C.)
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy
| | - Carlotta Granchi
- Department of Pharmacy, University of Pisa, 56126 Pisa, Italy; (C.G.); (T.T.)
| | - Tiziano Tuccinardi
- Department of Pharmacy, University of Pisa, 56126 Pisa, Italy; (C.G.); (T.T.)
| | - Flavio Rizzolio
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, 33081 Aviano, Italy; (S.P.); (S.P.); (V.C.)
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, 30172 Venice, Italy; or
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6
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Rojas ML, Cruz Del Puerto MM, Flores-Martín J, Racca AC, Kourdova LT, Miranda AL, Panzetta-Dutari GM, Genti-Raimondi S. Role of the lipid transport protein StarD7 in mitochondrial dynamics. Biochim Biophys Acta Mol Cell Biol Lipids 2021; 1866:159029. [PMID: 34416390 DOI: 10.1016/j.bbalip.2021.159029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 07/16/2021] [Accepted: 08/13/2021] [Indexed: 10/20/2022]
Abstract
Mitochondria are dynamic organelles crucial for cell function and survival implicated in oxidative energy production whose central functions are tightly controlled by lipids. StarD7 is a lipid transport protein involved in the phosphatidylcholine (PC) delivery to mitochondria. Previous studies have shown that StarD7 knockdown induces alterations in mitochondria and endoplasmic reticulum (ER) with a reduction in PC content, however whether StarD7 modulates mitochondrial dynamics remains unexplored. Here, we generated HTR-8/SVneo stable cells expressing the precursor StarD7.I and the mature processed StarD7.II isoforms. We demonstrated that StarD7.I overexpression altered mitochondrial morphology increasing its fragmentation, whereas no changes were observed in StarD7.II-overexpressing cells compared to the control (Ct) stable cells. StarD7.I (D7.I) stable cells were able to transport higher fluorescent PC analog to mitochondria than Ct cells, yield mitochondrial fusions, maintained the membrane potential, and produced lower levels of reactive oxygen species (ROS). Additionally, the expression of Dynamin Related Protein 1 (Drp1) and Mitofusin (Mfn2) proteins were increased, whereas the amount of Mitofusin 1 (Mfn1) decreased. Moreover, transfections with plasmids encoding Drp1-K38A, Drp1-S637D or Drp1-S637A mutants indicated that mitochondrial fragmentation in D7.I cells occurs in a fission-dependent manner via Drp1. In contrast, StarD7 silencing decreased Mfn1 and Mfn2 fusion proteins without modification of Drp1 protein level. These cells increased ROS levels and presented donut-shape mitochondria, indicative of metabolic stress. Altogether our findings provide novel evidence indicating that alterations in StarD7.I expression produce significant changes in mitochondrial morphology and dynamics.
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Affiliation(s)
- María L Rojas
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Bioquímica Clínica, Ciudad Universitaria, X5000HUA Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Mariano M Cruz Del Puerto
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Bioquímica Clínica, Ciudad Universitaria, X5000HUA Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Jésica Flores-Martín
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Bioquímica Clínica, Ciudad Universitaria, X5000HUA Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Ana C Racca
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Bioquímica Clínica, Ciudad Universitaria, X5000HUA Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Lucille T Kourdova
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Bioquímica Clínica, Ciudad Universitaria, X5000HUA Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Andrea L Miranda
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Bioquímica Clínica, Ciudad Universitaria, X5000HUA Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Graciela M Panzetta-Dutari
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Bioquímica Clínica, Ciudad Universitaria, X5000HUA Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Susana Genti-Raimondi
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Bioquímica Clínica, Ciudad Universitaria, X5000HUA Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Ciudad Universitaria, X5000HUA Córdoba, Argentina.
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7
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Jin QG, Shi WT, Wang YC, Li SY, Xue C, Xu HR, Wu MT, Wei Y. Oyster peptide prevents the occurrence of exercise-hypogonadal male condition by improving the function of pituitary gonadal axis in male rats. Andrologia 2021; 53:e14005. [PMID: 33565168 DOI: 10.1111/and.14005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/21/2021] [Accepted: 01/22/2021] [Indexed: 01/30/2023] Open
Abstract
This study evaluates the protective role of oyster peptide (OP) on the occurrence of Exercise-Hypogonadal Male Condition. Male rats were given heavy-load swimming training and / or OP was supplemented for 6 consecutive weeks. After heavy-load training, sperm count, sperm viability and sperm motility in epididymis, testosterone in serum and testis, glutathione peroxidase (GSH-px) and androgen receptor (AR) in testis and mating times were remarkably decreased, malondialdehyde (MDA), capture latency and mating latency were significantly increased, mRNA expression of steroidogenic acute regulatory (StAR) and P450 cholesterol side-chain cleavage enzyme (P450scc) were obviously down-regulated, but serum follicle-stimulating hormone (FSH) and luteinising hormone (LH) were not statistically changed. Conversely, when OP was supplemented at heavy-load training, sperm count, sperm viability and sperm motility in epididymis, serum FSH, LH, testosterone, GSH-px, superoxide dismutase (SOD), testosterone, AR in testis and mating times were dramatically increased, while testicular MDA, capture latency and mating latency were significantly decreased, and mRNA expression of StAR, StARD7, P450scc and 3β-hydroxysteroid dehydrogenase (3β-HSD) were significantly up-regulated. In conclusion, heavy-load training causes testicular spermatogenic and steroidogenic disorders by enhancing the generation of reactive oxygen species (ROS), which can be protected by the co-administration of OP by enhancing the function of pituitary gonad axis and lowering ROS generation.
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Affiliation(s)
- Qi-Guan Jin
- College of Physical Education, Yangzhou University, Yangzhou, China
| | - Wen-Ting Shi
- College of Physical Education, Yangzhou University, Yangzhou, China
| | - Yu-Chen Wang
- Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co., Ltd., Beijing, China
| | - Shu-Yan Li
- College of Physical Education, Yangzhou University, Yangzhou, China
| | - Chen Xue
- Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co., Ltd., Beijing, China
| | - Hao-Ran Xu
- College of Physical Education, Yangzhou University, Yangzhou, China
| | - Mei-Tong Wu
- College of Physical Education, Yangzhou University, Yangzhou, China
| | - Ying Wei
- Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co., Ltd., Beijing, China
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8
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Jin Q, Ma Y, Shi W, Wang J, Zhao R, Zhang H, Wu M, Liu W. Oyster oligopeptide improving cyclophosphamide-induced partial androgen deficiency of the aging male by promotion of testosterone synthesis. Geriatr Gerontol Int 2021; 21:268-275. [PMID: 33410288 DOI: 10.1111/ggi.14129] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 12/11/2020] [Accepted: 12/14/2020] [Indexed: 12/18/2022]
Abstract
AIM The aim of this study was to investigate the effect of oyster oligopeptide (OOP) at different doses on testosterone secretion and its regulating mechanism in partial androgen deficiency syndrome of aging male. METHODS The cyclophosphamide-induced partial androgen deficiency syndrome of the aging male rats were treated with a low, medium and high dose of OOP for 6 weeks. RESULTS Cyclophosphamide could decrease levels of total testosterone and luteinizing hormone in serum, and testosterone and glutathione peroxidase in testis, and increase malondialdehyde, and downregulate the mRNA expression of steroidogenic acute regulatory protein, steroidogenic acute regulatory-related lipid transfer domain 7 and P450 cholesterol side chain cleavage enzyme in testis (P < 0.05). All these changes were reversed by OOP co-administration with different doses, although, OOP at a low dose did not increase serum testosterone, luteinizing hormone and testicular glutathione peroxidase levels. CONCLUSIONS OOP treatment with different doses can effectively reduce oxidative stress in testicular tissue, promote the synthesis of testosterone and then prevent the formation of partial androgen deficiency syndrome of the aging male, with optimal effect at medium dose. Geriatr Gerontol Int 2021; 21: 268-275.
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Affiliation(s)
- Qiguan Jin
- College of Physical Education, Yangzhou University, Yangzhou, China
| | - Yongqing Ma
- Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co., Ltd., Beijing, China
| | - Wenting Shi
- College of Physical Education, Yangzhou University, Yangzhou, China
| | - Jing Wang
- Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co., Ltd., Beijing, China
| | - Renqing Zhao
- College of Physical Education, Yangzhou University, Yangzhou, China
| | - Haixin Zhang
- Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co., Ltd., Beijing, China
| | - Meitong Wu
- College of Physical Education, Yangzhou University, Yangzhou, China
| | - Wenying Liu
- Beijing Engineering Research Center of Protein and Functional Peptides, China National Research Institute of Food and Fermentation Industries Co., Ltd., Beijing, China
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9
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Xu K, Ji M, Huang X, Peng Y, Wu W, Zhang J. Differential Regulatory Roles of MicroRNAs in Porcine Intramuscular and Subcutaneous Adipocytes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:3954-3962. [PMID: 32146812 DOI: 10.1021/acs.jafc.9b08191] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The deposition of intramuscular (IM) and subcutaneous (SC) fat is an important trait influencing pork quality. Understanding the genetic differences between these two types of adipose tissues is consequently of great importance for pig breeding. Here, we established primary cultures of IM and SC adipocytes from Jiaxing black pigs. The microRNA (miRNA) expression profiles of the two types of adipocytes were obtained by RNA-seq. A total of 741 miRNAs were identified in IM and SC adipocytes, including 155 significant differentially expressed (SDE) miRNAs. According to gene ontology and Kyoto Encyclopedia of Genes analysis, the target genes of the SDE miRNAs were enriched in categories and pathways related to transcriptional regulation, fatty acid biosynthesis, as well as the MAPK and PI3K/Akt pathways. Notably, miR-206 expression was 36-fold higher in IM adipocytes than in SC adipocytes. The overexpression of miR-206 in IM and SC adipocytes decreased cell proliferation and triglyceride accumulation. Luciferase activity assays and quantitative polymerase chain reaction confirmed that miR-206 regulates adipocyte proliferation by targeting STARD7 and inhibits adipogenesis by repressing Krüppel-like factor 4 (KLF4) expression. Accordingly, the effect of miR-206 mimics was attenuated by the overexpression of KLF4 in adipocytes. Taken together, we identified the expression profiles of miRNAs in adipocytes, which revealed that miR-206 acts as a suppressor of adipogenesis.
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Affiliation(s)
- Ke Xu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
- College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao 066000, China
| | - Miao Ji
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
- College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao 066000, China
| | - Xin Huang
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
- College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao 066000, China
| | - Yongjia Peng
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Wenjing Wu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Jin Zhang
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
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10
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Clark BJ. The START-domain proteins in intracellular lipid transport and beyond. Mol Cell Endocrinol 2020; 504:110704. [PMID: 31927098 DOI: 10.1016/j.mce.2020.110704] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 01/08/2020] [Accepted: 01/08/2020] [Indexed: 12/17/2022]
Abstract
The Steroidogenic Acute Regulatory Protein-related Lipid Transfer (START) domain is a ~210 amino acid sequence that folds into an α/β helix-grip structure forming a hydrophobic pocket for lipid binding. The helix-grip fold structure defines a large superfamily of proteins, and this review focuses on the mammalian START domain family members that include single START domain proteins with identified ligands, and larger multi-domain proteins that may have novel roles in metabolism. Much of our understanding of the mammalian START domain proteins in lipid transport and changes in metabolism has advanced through studies using knockout mouse models, although for some of these proteins the identity and/or physiological role of ligand binding remains unknown. The findings that helped define START domain lipid-binding specificity, lipid transport, and changes in metabolism are presented to highlight that fundamental questions remain regarding the biological function(s) for START domain-containing proteins.
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Affiliation(s)
- Barbara J Clark
- Department of Biochemistry & Molecular Genetics, University of Louisville School of Medicine, Louisville, KY, 40292, USA.
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11
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Corbett MA, Kroes T, Veneziano L, Bennett MF, Florian R, Schneider AL, Coppola A, Licchetta L, Franceschetti S, Suppa A, Wenger A, Mei D, Pendziwiat M, Kaya S, Delledonne M, Straussberg R, Xumerle L, Regan B, Crompton D, van Rootselaar AF, Correll A, Catford R, Bisulli F, Chakraborty S, Baldassari S, Tinuper P, Barton K, Carswell S, Smith M, Berardelli A, Carroll R, Gardner A, Friend KL, Blatt I, Iacomino M, Di Bonaventura C, Striano S, Buratti J, Keren B, Nava C, Forlani S, Rudolf G, Hirsch E, Leguern E, Labauge P, Balestrini S, Sander JW, Afawi Z, Helbig I, Ishiura H, Tsuji S, Sisodiya SM, Casari G, Sadleir LG, van Coller R, Tijssen MAJ, Klein KM, van den Maagdenberg AMJM, Zara F, Guerrini R, Berkovic SF, Pippucci T, Canafoglia L, Bahlo M, Striano P, Scheffer IE, Brancati F, Depienne C, Gecz J. Intronic ATTTC repeat expansions in STARD7 in familial adult myoclonic epilepsy linked to chromosome 2. Nat Commun 2019; 10:4920. [PMID: 31664034 PMCID: PMC6820779 DOI: 10.1038/s41467-019-12671-y] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 09/23/2019] [Indexed: 12/22/2022] Open
Abstract
Familial Adult Myoclonic Epilepsy (FAME) is characterised by cortical myoclonic tremor usually from the second decade of life and overt myoclonic or generalised tonic-clonic seizures. Four independent loci have been implicated in FAME on chromosomes (chr) 2, 3, 5 and 8. Using whole genome sequencing and repeat primed PCR, we provide evidence that chr2-linked FAME (FAME2) is caused by an expansion of an ATTTC pentamer within the first intron of STARD7. The ATTTC expansions segregate in 158/158 individuals typically affected by FAME from 22 pedigrees including 16 previously reported families recruited worldwide. RNA sequencing from patient derived fibroblasts shows no accumulation of the AUUUU or AUUUC repeat sequences and STARD7 gene expression is not affected. These data, in combination with other genes bearing similar mutations that have been implicated in FAME, suggest ATTTC expansions may cause this disorder, irrespective of the genomic locus involved.
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Affiliation(s)
- Mark A Corbett
- Adelaide Medical School and Robinson Research Institute, University of Adelaide, Adelaide, 5005, SA, Australia
| | - Thessa Kroes
- Adelaide Medical School and Robinson Research Institute, University of Adelaide, Adelaide, 5005, SA, Australia
| | - Liana Veneziano
- Institute of Translational Pharmacology, National Research Council, Rome, Italy
| | - Mark F Bennett
- Population Health and Immunity Division, the Walter and Eliza Hall Institute of Medical Research, Parkville, 3052, VIC, Australia
- Department of Medical Biology, the University of Melbourne, Melbourne, 3010, VIC, Australia
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, 3084, VIC, Australia
| | - Rahel Florian
- Institut für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany
| | - Amy L Schneider
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, 3084, VIC, Australia
| | - Antonietta Coppola
- Department of Neuroscience, Reproductive and Odontostomatological Sciences, Federico II University, Napoli, Italy
| | - Laura Licchetta
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Silvana Franceschetti
- Neurophysiopathology, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
- Member of the European Reference Network on Rare and Complex epilepsies, ERN EpiCARE, London, UK
| | - Antonio Suppa
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università, 30, 00185, Rome, Italy
- IRCCS Neuromed, Pozzilli, IS, Italy
| | | | - Davide Mei
- Neuroscience and Neurogenetics Department, Meyer Children's Hospital, Florence, Italy
| | - Manuela Pendziwiat
- Department of Neuropediatrics, University Medical Center Schleswig-Holstein, Christian-Albrechts University, Kiel, Germany
| | - Sabine Kaya
- Institut für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany
| | - Massimo Delledonne
- Department of Biotechnology, University of Verona, Strada le Grazie 15, 37134, Verona, Italy
| | - Rachel Straussberg
- Institute of Pediatric Neurology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel
- Tel Aviv University Medical School, 69978, Tel Aviv, Israel
| | - Luciano Xumerle
- Personal Genomics, Strada le Grazie 15, 37134, Verona, Italy
| | - Brigid Regan
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, 3084, VIC, Australia
| | - Douglas Crompton
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, 3084, VIC, Australia
- Department of Neurology, Northern Health, Melbourne, VIC, Australia
| | - Anne-Fleur van Rootselaar
- Amsterdam UMC, University of Amsterdam, Department of Neurology and Clinical Neurophysiology, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Anthony Correll
- Genetics and Molecular Pathology, SA Pathology, Adelaide, SA, Australia
| | - Rachael Catford
- Genetics and Molecular Pathology, SA Pathology, Adelaide, SA, Australia
| | - Francesca Bisulli
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | | | - Sara Baldassari
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
| | - Paolo Tinuper
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Kirston Barton
- Kinghorn Centre for Clinical Genomics, Garvan Institute for Medical Research, Darlinghurst, NSW, 2010, Australia
| | - Shaun Carswell
- Kinghorn Centre for Clinical Genomics, Garvan Institute for Medical Research, Darlinghurst, NSW, 2010, Australia
| | - Martin Smith
- Kinghorn Centre for Clinical Genomics, Garvan Institute for Medical Research, Darlinghurst, NSW, 2010, Australia
- St-Vincent's Clinical School, Faulty of Medicine, UNSW Sydney, Darlinghurst, NSW, 2010, Australia
| | - Alfredo Berardelli
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università, 30, 00185, Rome, Italy
- IRCCS Neuromed, Pozzilli, IS, Italy
| | - Renee Carroll
- Adelaide Medical School and Robinson Research Institute, University of Adelaide, Adelaide, 5005, SA, Australia
| | - Alison Gardner
- Adelaide Medical School and Robinson Research Institute, University of Adelaide, Adelaide, 5005, SA, Australia
| | - Kathryn L Friend
- Genetics and Molecular Pathology, SA Pathology, Adelaide, SA, Australia
| | - Ilan Blatt
- Department of Neurology, Sheba Medical Center, Tel Hashomer, Israel
| | - Michele Iacomino
- Laboratory of Neurogenetics, IRCCS Istituto "G. Gaslini", Genova, Italy
| | - Carlo Di Bonaventura
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università, 30, 00185, Rome, Italy
| | | | - Julien Buratti
- AP-HP, Hôpital Pitié-Salpêtrière, Département de Génétique, F-75013, Paris, France
| | - Boris Keren
- AP-HP, Hôpital Pitié-Salpêtrière, Département de Génétique, F-75013, Paris, France
| | - Caroline Nava
- INSERM, U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, F-75013, Paris, France
| | - Sylvie Forlani
- INSERM, U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, F-75013, Paris, France
| | - Gabrielle Rudolf
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U1258, Illkirch, France
- Université de Strasbourg, Illkirch, France
- Department of Neurology, Strasbourg University Hospital, Strasbourg, France
- Centre National de la Recherche Scientifique, U7104, Illkirch, France
| | - Edouard Hirsch
- Department of Neurology, Strasbourg University Hospital, Strasbourg, France
| | - Eric Leguern
- AP-HP, Hôpital Pitié-Salpêtrière, Département de Génétique, F-75013, Paris, France
- INSERM, U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, F-75013, Paris, France
| | - Pierre Labauge
- MS Unit, Montpellier University Hospital, Montpellier, France
| | - Simona Balestrini
- Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, London, WC1N 3BG, UK
- Chalfont Centre for Epilepsy, Chalfont St Peter, SL9 0RJ, UK
| | - Josemir W Sander
- Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, London, WC1N 3BG, UK
- Chalfont Centre for Epilepsy, Chalfont St Peter, SL9 0RJ, UK
| | - Zaid Afawi
- Tel Aviv University Medical School, 69978, Tel Aviv, Israel
| | - Ingo Helbig
- Department of Neuropediatrics, University Medical Center Schleswig-Holstein, Christian-Albrechts University, Kiel, Germany
- Division of Neurology Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Hiroyuki Ishiura
- Department of Neurology, the University of Tokyo Hospital, Tokyo, Japan
| | - Shoji Tsuji
- Department of Neurology, the University of Tokyo Hospital, Tokyo, Japan
- Medical Genome Center, the University of Tokyo Hospital, Tokyo, Japan
- International University of Health and Welfare, Chiba, Japan
| | - Sanjay M Sisodiya
- Department of Clinical and Experimental Epilepsy, UCL Queen Square Institute of Neurology, London, WC1N 3BG, UK
- Chalfont Centre for Epilepsy, Chalfont St Peter, SL9 0RJ, UK
| | - Giorgio Casari
- TIGEM - Telethon Institute of Genetics and Medicine, Naples, and San Raffaele University, Milan, Italy
| | - Lynette G Sadleir
- Department of Paediatrics and Child Health, University of Otago, Wellington, Wellington, New Zealand
| | | | - Marina A J Tijssen
- Department of Neurology, University of Groningen, Groningen, The Netherlands
| | - Karl Martin Klein
- Department of Neurology, Epilepsy Center Frankfurt Rhine-Main, Goethe University, Frankfurt am Main, Frankfurt, Germany
- Department of Neurology, Epilepsy Center Hessen, Philipps University, Marburg, Marburg, Germany
- Departments of Clinical Neurosciences, Medical Genetics and Community Health Sciences, Hotchkiss Brain Institute & Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | | | - Federico Zara
- Laboratory of Neurogenetics, IRCCS Istituto "G. Gaslini", Genova, Italy
| | - Renzo Guerrini
- Neuroscience and Neurogenetics Department, Meyer Children's Hospital, Florence, Italy
| | - Samuel F Berkovic
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, 3084, VIC, Australia
| | - Tommaso Pippucci
- Medical Genetics Unit, Sant'Orsola-Malpighi University Hospital, Bologna, Italy
| | - Laura Canafoglia
- Neurophysiopathology, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
- Member of the European Reference Network on Rare and Complex epilepsies, ERN EpiCARE, London, UK
| | - Melanie Bahlo
- Population Health and Immunity Division, the Walter and Eliza Hall Institute of Medical Research, Parkville, 3052, VIC, Australia
- Department of Medical Biology, the University of Melbourne, Melbourne, 3010, VIC, Australia
| | - Pasquale Striano
- Pediatric Neurology and Muscular Diseases Unit, IRCCS Istituto "G. Gaslini", Genova, Italy
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genova, Italy
| | - Ingrid E Scheffer
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, 3084, VIC, Australia
- Royal Children's Hospital, Murdoch Children's Research Institute and Florey Institute, Melbourne, VIC, Australia
| | - Francesco Brancati
- Institute of Translational Pharmacology, National Research Council, Rome, Italy
- Medical Genetics, Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell'Immacolata, IDI-IRCCS, Rome, Italy
| | - Christel Depienne
- Institut für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique, U7104, Illkirch, France
| | - Jozef Gecz
- Adelaide Medical School and Robinson Research Institute, University of Adelaide, Adelaide, 5005, SA, Australia.
- South Australian Health and Medical Research Institute, Adelaide, 5000, SA, Australia.
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12
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Florian RT, Kraft F, Leitão E, Kaya S, Klebe S, Magnin E, van Rootselaar AF, Buratti J, Kühnel T, Schröder C, Giesselmann S, Tschernoster N, Altmueller J, Lamiral A, Keren B, Nava C, Bouteiller D, Forlani S, Jornea L, Kubica R, Ye T, Plassard D, Jost B, Meyer V, Deleuze JF, Delpu Y, Avarello MDM, Vijfhuizen LS, Rudolf G, Hirsch E, Kroes T, Reif PS, Rosenow F, Ganos C, Vidailhet M, Thivard L, Mathieu A, Bourgeron T, Kurth I, Rafehi H, Steenpass L, Horsthemke B, LeGuern E, Klein KM, Labauge P, Bennett MF, Bahlo M, Gecz J, Corbett MA, Tijssen MAJ, van den Maagdenberg AMJM, Depienne C. Unstable TTTTA/TTTCA expansions in MARCH6 are associated with Familial Adult Myoclonic Epilepsy type 3. Nat Commun 2019; 10:4919. [PMID: 31664039 PMCID: PMC6820781 DOI: 10.1038/s41467-019-12763-9] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 09/23/2019] [Indexed: 12/30/2022] Open
Abstract
Familial Adult Myoclonic Epilepsy (FAME) is a genetically heterogeneous disorder characterized by cortical tremor and seizures. Intronic TTTTA/TTTCA repeat expansions in SAMD12 (FAME1) are the main cause of FAME in Asia. Using genome sequencing and repeat-primed PCR, we identify another site of this repeat expansion, in MARCH6 (FAME3) in four European families. Analysis of single DNA molecules with nanopore sequencing and molecular combing show that expansions range from 3.3 to 14 kb on average. However, we observe considerable variability in expansion length and structure, supporting the existence of multiple expansion configurations in blood cells and fibroblasts of the same individual. Moreover, the largest expansions are associated with micro-rearrangements occurring near the expansion in 20% of cells. This study provides further evidence that FAME is caused by intronic TTTTA/TTTCA expansions in distinct genes and reveals that expansions exhibit an unexpectedly high somatic instability that can ultimately result in genomic rearrangements.
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Affiliation(s)
- Rahel T Florian
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45147, Essen, Germany
| | - Florian Kraft
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, 52062, Aachen, Germany
| | - Elsa Leitão
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45147, Essen, Germany
| | - Sabine Kaya
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45147, Essen, Germany
| | - Stephan Klebe
- Department of Neurology, Universitätsklinikum Essen, Universität Duisburg-Essen, Hufelandstraße 55, 45147, Essen, Germany
| | - Eloi Magnin
- Department of Neurology, CHU Jean Minjoz, 25000, Besançon, France
| | - Anne-Fleur van Rootselaar
- Departments of Neurology and Clinical Neurophysiology, Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Meibergdreef 9, 1105, AZ, Amsterdam, The Netherlands
| | - Julien Buratti
- AP-HP, Hôpital Pitié-Salpêtrière, Département de Génétique, 75013, Paris, France
| | - Theresa Kühnel
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45147, Essen, Germany
| | - Christopher Schröder
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45147, Essen, Germany
| | - Sebastian Giesselmann
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, 52062, Aachen, Germany
| | - Nikolai Tschernoster
- Cologne Center for Genomics, Center for Molecular Medicine Cologne (CMMC), University of Cologne, Weyertal 115b, 50931, Cologne, Germany
| | - Janine Altmueller
- Cologne Center for Genomics, Center for Molecular Medicine Cologne (CMMC), University of Cologne, Weyertal 115b, 50931, Cologne, Germany
| | - Anaide Lamiral
- Department of Neurology, CHU Jean Minjoz, 25000, Besançon, France
| | - Boris Keren
- AP-HP, Hôpital Pitié-Salpêtrière, Département de Génétique, 75013, Paris, France
| | - Caroline Nava
- AP-HP, Hôpital Pitié-Salpêtrière, Département de Génétique, 75013, Paris, France
- Institut du Cerveau et de la Moelle épinière (ICM), Sorbonne Université, UMR S 1127, Inserm U1127, CNRS UMR 7225, F-75013, Paris, France
| | - Delphine Bouteiller
- Institut du Cerveau et de la Moelle épinière (ICM), Sorbonne Université, UMR S 1127, Inserm U1127, CNRS UMR 7225, F-75013, Paris, France
| | - Sylvie Forlani
- Institut du Cerveau et de la Moelle épinière (ICM), Sorbonne Université, UMR S 1127, Inserm U1127, CNRS UMR 7225, F-75013, Paris, France
| | - Ludmila Jornea
- Institut du Cerveau et de la Moelle épinière (ICM), Sorbonne Université, UMR S 1127, Inserm U1127, CNRS UMR 7225, F-75013, Paris, France
| | - Regina Kubica
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45147, Essen, Germany
| | - Tao Ye
- IGBMC, CNRS UMR 7104/INSERM U1258/Université de Strasbourg, 1 Rue Laurent Fries, 67400, Illkirch-Graffenstaden, France
| | - Damien Plassard
- IGBMC, CNRS UMR 7104/INSERM U1258/Université de Strasbourg, 1 Rue Laurent Fries, 67400, Illkirch-Graffenstaden, France
| | - Bernard Jost
- IGBMC, CNRS UMR 7104/INSERM U1258/Université de Strasbourg, 1 Rue Laurent Fries, 67400, Illkirch-Graffenstaden, France
| | - Vincent Meyer
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, CEA, Université Paris-Saclay, F-91057, Evry, France
| | - Jean-François Deleuze
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, CEA, Université Paris-Saclay, F-91057, Evry, France
| | - Yannick Delpu
- Genomic Vision, 80 Rue des Meuniers, 92220, Bagneux, France
| | | | - Lisanne S Vijfhuizen
- Department of Human Genetics, Leiden University Medical Center, Albinusdreef 2, 2333, ZA, Leiden, The Netherlands
| | - Gabrielle Rudolf
- IGBMC, CNRS UMR 7104/INSERM U1258/Université de Strasbourg, 1 Rue Laurent Fries, 67400, Illkirch-Graffenstaden, France
- Department of Neurology-centre de référence des epilepsies rares, University Hospital of Strasbourg, 1 Avenue Molière, 67200, Strasbourg, France
| | - Edouard Hirsch
- Department of Neurology-centre de référence des epilepsies rares, University Hospital of Strasbourg, 1 Avenue Molière, 67200, Strasbourg, France
| | - Thessa Kroes
- School of Biological Sciences, School of Medicine and Robinson Research Institute, The University of Adelaide, Adelaide, 5005, SA, Australia
| | - Philipp S Reif
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Goethe University and LOEWE Center for Personalized Translational Epilepsy Research (CePTER), 60323, Frankfurt am Main, Germany
- Department of Neurology, Epilepsy Center Hessen, Philipps University, 35037, Marburg, Germany
| | - Felix Rosenow
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Goethe University and LOEWE Center for Personalized Translational Epilepsy Research (CePTER), 60323, Frankfurt am Main, Germany
- Department of Neurology, Epilepsy Center Hessen, Philipps University, 35037, Marburg, Germany
| | - Christos Ganos
- Department of Neurology, Charité University Medicine Berlin, 10117, Berlin, Germany
| | - Marie Vidailhet
- Institut du Cerveau et de la Moelle épinière (ICM), Sorbonne Université, UMR S 1127, Inserm U1127, CNRS UMR 7225, F-75013, Paris, France
- APHP, Hôpital Pitié-Salpêtrière, Département de Neurologie, 75013, Paris, France
| | - Lionel Thivard
- APHP, Hôpital Pitié-Salpêtrière, Département de Neurologie, 75013, Paris, France
| | - Alexandre Mathieu
- Human Genetics and Cognitive Functions, Pasteur Institute, UMR3571 CNRS, Université de Paris, 75015, Paris, France
| | - Thomas Bourgeron
- Human Genetics and Cognitive Functions, Pasteur Institute, UMR3571 CNRS, Université de Paris, 75015, Paris, France
| | - Ingo Kurth
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, 52062, Aachen, Germany
| | - Haloom Rafehi
- Population Health and Immunity Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, 3052, VIC, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, 3010, VIC, Australia
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, 3084, VIC, Australia
| | - Laura Steenpass
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45147, Essen, Germany
| | - Bernhard Horsthemke
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45147, Essen, Germany
| | - Eric LeGuern
- AP-HP, Hôpital Pitié-Salpêtrière, Département de Génétique, 75013, Paris, France
- Institut du Cerveau et de la Moelle épinière (ICM), Sorbonne Université, UMR S 1127, Inserm U1127, CNRS UMR 7225, F-75013, Paris, France
| | - Karl Martin Klein
- Epilepsy Center Frankfurt Rhine-Main, Department of Neurology, Goethe University and LOEWE Center for Personalized Translational Epilepsy Research (CePTER), 60323, Frankfurt am Main, Germany
- Department of Neurology, Epilepsy Center Hessen, Philipps University, 35037, Marburg, Germany
- Departments of Clinical Neurosciences, Medical Genetics and Community Health Sciences, Hotchkiss Brain Institute & Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, 2500 University Dr NW, Calgary, AB, T2N 1N4, Canada
| | - Pierre Labauge
- Department of Neurology, Gui de Chauliac University Hospital, 34295, Montpellier, France
| | - Mark F Bennett
- Population Health and Immunity Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, 3052, VIC, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, 3010, VIC, Australia
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, 3084, VIC, Australia
| | - Melanie Bahlo
- Population Health and Immunity Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, 3052, VIC, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, 3010, VIC, Australia
| | - Jozef Gecz
- School of Biological Sciences, School of Medicine and Robinson Research Institute, The University of Adelaide, Adelaide, 5005, SA, Australia
- South Australian Health and Medical Research Institute, The University of Adelaide, Adelaide, 5005, SA, Australia
| | - Mark A Corbett
- School of Biological Sciences, School of Medicine and Robinson Research Institute, The University of Adelaide, Adelaide, 5005, SA, Australia
| | - Marina A J Tijssen
- Department of Neurology, University Medical Center Groningen, University of Groningen, 9700, AB, Groningen, the Netherlands
| | - Arn M J M van den Maagdenberg
- Department of Human Genetics, Leiden University Medical Center, Albinusdreef 2, 2333, ZA, Leiden, The Netherlands
- Department of Neurology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Christel Depienne
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45147, Essen, Germany.
- Institut du Cerveau et de la Moelle épinière (ICM), Sorbonne Université, UMR S 1127, Inserm U1127, CNRS UMR 7225, F-75013, Paris, France.
- IGBMC, CNRS UMR 7104/INSERM U1258/Université de Strasbourg, 1 Rue Laurent Fries, 67400, Illkirch-Graffenstaden, France.
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13
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Tugaeva KV, Sluchanko NN. Steroidogenic Acute Regulatory Protein: Structure, Functioning, and Regulation. BIOCHEMISTRY (MOSCOW) 2019; 84:S233-S253. [PMID: 31213205 DOI: 10.1134/s0006297919140141] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Steroidogenesis takes place mainly in adrenal and gonadal cells that produce a variety of structurally similar hormones regulating numerous body functions. The rate-limiting stage of steroidogenesis is cholesterol delivery to the inner mitochondrial membrane, where it is converted by cytochrome P450scc into pregnenolone, a common precursor of all steroid hormones. The major role of supplying mitochondria with cholesterol belongs to steroidogenic acute regulatory protein (STARD1). STARD1, which is synthesized de novo as a precursor containing mitochondrial localization sequence and sterol-binding domain, significantly accelerates cholesterol transport and production of pregnenolone. Despite a tremendous interest in STARD1 fueled by its involvement in hereditary diseases and extensive efforts of numerous laboratories worldwide, many aspects of STARD1 structure, functioning, and regulation remain obscure and debatable. This review presents current concepts on the structure of STARD1 and other lipid transfer proteins, the role of STARD1 in steroidogenesis, and the mechanism of its functioning, as well as identifies the most controversial and least studied questions related to the activity of this protein.
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Affiliation(s)
- K V Tugaeva
- Bach Institute of Biochemistry, Federal Research Center of Biotechnology, Russian Academy of Sciences, Moscow, 119071, Russia. .,Lomonosov Moscow State University, Biological Faculty, Department of Biochemistry, Moscow, 119234, Russia
| | - N N Sluchanko
- Bach Institute of Biochemistry, Federal Research Center of Biotechnology, Russian Academy of Sciences, Moscow, 119071, Russia. .,Lomonosov Moscow State University, Biological Faculty, Department of Biophysics, Moscow, 119991, Russia
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14
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Flores-Martín J, Reyna L, Cruz Del Puerto M, Rojas ML, Panzetta-Dutari GM, Genti-Raimondi S. Hexosamine pathway regulates StarD7 expression in JEG-3 cells. Mol Biol Rep 2018; 45:2593-2600. [PMID: 30315445 DOI: 10.1007/s11033-018-4428-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 10/05/2018] [Indexed: 11/29/2022]
Abstract
StarD7 is a lipid binding protein involved in the delivery of phosphatidylcholine to the mitochondria whose promoter is activated by Wnt/β-catenin signaling. Although the majority of glucose enters glycolysis, ~ 2-5% of it can be metabolized via the hexosamine biosynthetic pathway (HBP). Considering that HBP has been implicated in the regulation of β-catenin we explored if changes in glucose levels modulate StarD7 expression by the HBP in trophoblast cells. We found an increase in StarD7 as well as in β-catenin expression following high-glucose (25 mM) treatment in JEG-3 cells; these effects were abolished in the presence of HBP inhibitors. Moreover, since HBP is able to promote unfolded protein response (UPR) the protein levels of GRP78, Ire1α, calnexin, p-eIF2α and total eIF2α as well as XBP1 mRNA was measured. Our results indicate that a diminution in glucose concentration leads to a decrease in StarD7 expression and an increase in the UPR markers: GRP78 and Ire1α. Conversely, an increase in glucose is associated to high StarD7 levels and low GRP78 expression, phospho-eIF2α and XBP1 splicing, although Ire1α remains high when cells are restored to high glucose. Taken together these findings indicate that glucose modulates StarD7 and β-catenin expression through the HBP associated to UPR, suggesting the existence of a link between UPR and HBP in trophoblast cells. This is the first study reporting the effects of glucose on StarD7 in trophoblast cells. These data highlight the importance to explore the role of StarD7 in placenta disorders related to nutrient availability.
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Affiliation(s)
- Jésica Flores-Martín
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA, Córdoba, Argentina.,Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Ciudad Universitaria, X5000HUA, Córdoba, Argentina
| | - Luciana Reyna
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA, Córdoba, Argentina.,Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Ciudad Universitaria, X5000HUA, Córdoba, Argentina
| | - Mariano Cruz Del Puerto
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA, Córdoba, Argentina.,Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Ciudad Universitaria, X5000HUA, Córdoba, Argentina
| | - María L Rojas
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA, Córdoba, Argentina.,Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Ciudad Universitaria, X5000HUA, Córdoba, Argentina
| | - Graciela M Panzetta-Dutari
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA, Córdoba, Argentina.,Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Ciudad Universitaria, X5000HUA, Córdoba, Argentina
| | - Susana Genti-Raimondi
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA, Córdoba, Argentina. .,Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Ciudad Universitaria, X5000HUA, Córdoba, Argentina. .,Departamento de Bioquímica Clínica, CIBICI-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, X5000HUA, Córdoba, Argentina.
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15
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Zhang T, Zheng T, Wang C, Zhang W, Jia D, Wang R, Qiao B. EFFECTS OF Wnt / β-CATENIN SIGNALING PATHWAY AND STAR D7 ON TESTOSTERONE SYNTHESIS. ACTA ENDOCRINOLOGICA (BUCHAREST, ROMANIA : 2005) 2018; 14:155-162. [PMID: 31149252 PMCID: PMC6516511 DOI: 10.4183/aeb.2018.155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND This study aimed to assess the mechanism through which Wnt/ beta - catenin signaling pathway, and StarD7, prometes testosterone synthesis, and to explore a new pathway for the regulation of testosterone synthesis. ANIMALS AND METHODS Leydig cells were isolated from male Sprague-Dawley rats divided into four groups and treated with Annexin 5 in concentration of 0, 0.1, 1 and 10 nmol/L. Testosterone secretion, expression of StarD7, StarD7 mRNA, β-catenin and changes of β - catenin localization in Leydig cells of testis of rats were tested in the four groups. RESULTS mRNA and protein levels of StarD7 and β-catenin increased significantly, upon stimulation with 1 nmol/L annexin 5. Accumulation of β-catenin inside the cells and the nucleus, was observed by immunofluorescence staining, in cells treated with annexin 5. These findings indicate a possible role of StarD7 and β-catenin in the process of annexin5-mediated stimulation of testosterone synthesis. CONCLUSIONS Wnt/β-catenin signaling pathway and StarD7 are involved in the process of annexin5 stimulation of testosterone synthesis. Activation of Wnt/ β-catenin signaling pathway by Annexin5, and increase in StarD7 expression lead to elevated expression of key regulatory enzymes in testosterone synthesis, thus promoting testosterone synthesis.
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Affiliation(s)
| | | | | | | | | | | | - B. Qiao
- The First Affiliated Hospital of Zhengzhou University, Department of Urology, Zhengzhou, China
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16
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Rosewick N, Durkin K, Artesi M, Marçais A, Hahaut V, Griebel P, Arsic N, Avettand-Fenoel V, Burny A, Charlier C, Hermine O, Georges M, Van den Broeke A. Cis-perturbation of cancer drivers by the HTLV-1/BLV proviruses is an early determinant of leukemogenesis. Nat Commun 2017; 8:15264. [PMID: 28534499 PMCID: PMC5457497 DOI: 10.1038/ncomms15264] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 03/14/2017] [Indexed: 12/12/2022] Open
Abstract
Human T-cell leukaemia virus type-1 (HTLV-1) and bovine leukaemia virus (BLV) infect T- and B-lymphocytes, respectively, provoking a polyclonal expansion that will evolve into an aggressive monoclonal leukaemia in ∼5% of individuals following a protracted latency period. It is generally assumed that early oncogenic changes are largely dependent on virus-encoded products, especially TAX and HBZ, while progression to acute leukaemia/lymphoma involves somatic mutations, yet that both are independent of proviral integration site that has been found to be very variable between tumours. Here, we show that HTLV-1/BLV proviruses are integrated near cancer drivers which they affect either by provirus-dependent transcription termination or as a result of viral antisense RNA-dependent cis-perturbation. The same pattern is observed at polyclonal non-malignant stages, indicating that provirus-dependent host gene perturbation contributes to the initial selection of the multiple clones characterizing the asymptomatic stage, requiring additional alterations in the clone that will evolve into full-blown leukaemia/lymphoma. Human T-cell leukaemia virus type-1 and bovine leukaemia virus infect T and B lymphocytes and lead to aggressive leukaemia. Here, the authors show these proviruses integrate near cancer drivers perturbing transcription termination or antisense RNA-dependent interaction, suggesting post-transcriptional mechanisms in some cases.
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Affiliation(s)
- Nicolas Rosewick
- Unit of Animal Genomics, GIGA-R, Université de Liège (ULg), Avenue de l'Hôpital 11, B34, Liège 4000, Belgium
| | - Keith Durkin
- Unit of Animal Genomics, GIGA-R, Université de Liège (ULg), Avenue de l'Hôpital 11, B34, Liège 4000, Belgium
| | - Maria Artesi
- Unit of Animal Genomics, GIGA-R, Université de Liège (ULg), Avenue de l'Hôpital 11, B34, Liège 4000, Belgium
| | - Ambroise Marçais
- Service d'hématologie, Hôpital Universitaire Necker, Université René Descartes, Assistance publique hôpitaux de Paris, 149-161 rue de Sèvres, Paris 75010, France
| | - Vincent Hahaut
- Unit of Animal Genomics, GIGA-R, Université de Liège (ULg), Avenue de l'Hôpital 11, B34, Liège 4000, Belgium
| | - Philip Griebel
- Vaccine and Infectious Disease Organization, VIDO-Intervac, University of Saskatchewan, 120 Veterinary Road, Saskatoon, Canada S7N 5E3
| | - Natasa Arsic
- Vaccine and Infectious Disease Organization, VIDO-Intervac, University of Saskatchewan, 120 Veterinary Road, Saskatoon, Canada S7N 5E3
| | - Véronique Avettand-Fenoel
- Laboratoire de Virologie, AP-HP, Hôpital Necker-Enfants Malades, Université Paris Descartes, Sorbonne Paris Cité, EA7327, 149 rue de Sèvres, Paris 75010, France
| | - Arsène Burny
- Laboratory of Experimental Hematology, Institut Jules Bordet, Université Libre de Bruxelles (ULB), Boulevard de Waterloo 121, Brussels 1000, Belgium
| | - Carole Charlier
- Unit of Animal Genomics, GIGA-R, Université de Liège (ULg), Avenue de l'Hôpital 11, B34, Liège 4000, Belgium
| | - Olivier Hermine
- Service d'hématologie, Hôpital Universitaire Necker, Université René Descartes, Assistance publique hôpitaux de Paris, 149-161 rue de Sèvres, Paris 75010, France.,INSERM U1163-ERL8254, Institut Imagine, 24 B Boulevard du Montparnasse, Paris 75010, France
| | - Michel Georges
- Unit of Animal Genomics, GIGA-R, Université de Liège (ULg), Avenue de l'Hôpital 11, B34, Liège 4000, Belgium
| | - Anne Van den Broeke
- Unit of Animal Genomics, GIGA-R, Université de Liège (ULg), Avenue de l'Hôpital 11, B34, Liège 4000, Belgium.,Laboratory of Experimental Hematology, Institut Jules Bordet, Université Libre de Bruxelles (ULB), Boulevard de Waterloo 121, Brussels 1000, Belgium
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17
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Yang L, Na CL, Luo S, Wu D, Hogan S, Huang T, Weaver TE. The Phosphatidylcholine Transfer Protein Stard7 is Required for Mitochondrial and Epithelial Cell Homeostasis. Sci Rep 2017; 7:46416. [PMID: 28401922 PMCID: PMC5388865 DOI: 10.1038/srep46416] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 03/15/2017] [Indexed: 12/15/2022] Open
Abstract
Mitochondria synthesize select phospholipids but lack the machinery for synthesis of the most abundant mitochondrial phospholipid, phosphatidylcholine (PC). Although the phospholipid transfer protein Stard7 promotes uptake of PC by mitochondria, the importance of this pathway for mitochondrial and cellular homeostasis represents a significant knowledge gap. Haploinsufficiency for Stard7 is associated with significant exacerbation of allergic airway disease in mice, including an increase in epithelial barrier permeability. To test the hypothesis that Stard7 deficiency leads to altered barrier structure/function downstream of mitochondrial dysfunction, Stard7 expression was knocked down in a bronchiolar epithelial cell line (BEAS-2B) and specifically deleted in lung epithelial cells of mice (Stard7epi∆/∆). Stard7 deficiency was associated with altered mitochondrial size and membrane organization both in vitro and in vivo. Altered mitochondrial structure was accompanied by disruption of mitochondrial homeostasis, including decreased aerobic respiration, increased oxidant stress, and mitochondrial DNA damage that, in turn, was linked to altered barrier integrity and function. Both mitochondrial and barrier defects were largely corrected by targeting Stard7 to mitochondria or treating epithelial cells with a mitochondrial-targeted antioxidant. These studies suggest that Stard7-mediated transfer of PC is crucial for mitochondrial homeostasis and that mitochondrial dysfunction contributes to altered barrier permeability in Stard7-deficient mice.
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Affiliation(s)
- Li Yang
- Perinatal Institute, Division of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
| | - Cheng-Lun Na
- Perinatal Institute, Division of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
| | - Shiyu Luo
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
| | - David Wu
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
| | - Simon Hogan
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
| | - Taosheng Huang
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
| | - Timothy E Weaver
- Perinatal Institute, Division of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229-3039, USA
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18
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Seaman L, Chen H, Brown M, Wangsa D, Patterson G, Camps J, Omenn GS, Ried T, Rajapakse I. Nucleome Analysis Reveals Structure-Function Relationships for Colon Cancer. Mol Cancer Res 2017; 15:821-830. [PMID: 28258094 DOI: 10.1158/1541-7786.mcr-16-0374] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 10/25/2016] [Accepted: 02/28/2017] [Indexed: 12/17/2022]
Abstract
Chromosomal translocations and aneuploidy are hallmarks of cancer genomes; however, the impact of these aberrations on the nucleome (i.e., nuclear structure and gene expression) is not yet understood. Here, the nucleome of the colorectal cancer cell line HT-29 was analyzed using chromosome conformation capture (Hi-C) to study genome structure, complemented by RNA sequencing (RNA-seq) to determine the consequent changes in genome function. Importantly, translocations and copy number changes were identified at high resolution from Hi-C data and the structure-function relationships present in normal cells were maintained in cancer. In addition, a new copy number-based normalization method for Hi-C data was developed to analyze the effect of chromosomal aberrations on local chromatin structure. The data demonstrate that at the site of translocations, the correlation between chromatin organization and gene expression increases; thus, chromatin accessibility more directly reflects transcription. In addition, the homogeneously staining region of chromosome band 8q24 of HT-29, which includes the MYC oncogene, interacts with various loci throughout the genome and is composed of open chromatin. The methods, described herein, can be applied to the assessment of the nucleome in other cell types with chromosomal aberrations.Implications: Findings show that chromosome conformation capture identifies chromosomal abnormalities at high resolution in cancer cells and that these abnormalities alter the relationship between structure and function. Mol Cancer Res; 15(7); 821-30. ©2017 AACR.
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Affiliation(s)
- Laura Seaman
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan
| | - Haiming Chen
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan
| | - Markus Brown
- Cancer Genomics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Darawalee Wangsa
- Cancer Genomics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Geoff Patterson
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan
| | - Jordi Camps
- Gastrointestinal and Pancreatic Oncology Group, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Catalonia, Spain.,Unitat de Biologia Cellular i Genètica Mèdica, Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Medicina, Universitat Autònoma de Barcelona, Bellaterra, Catalonia, Spain
| | - Gilbert S Omenn
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan.,Departments of Internal Medicine and Human Genetics, School of Public Health, University of Michigan, Ann Arbor, Michigan
| | - Thomas Ried
- Cancer Genomics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Indika Rajapakse
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan. .,Department of Mathematics, University of Michigan, Ann Arbor, Michigan
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19
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Hill RJ, Ringel A, Knuepfer E, Moon RW, Blackman MJ, van Ooij C. Regulation and Essentiality of the StAR-related Lipid Transfer (START) Domain-containing Phospholipid Transfer Protein PFA0210c in Malaria Parasites. J Biol Chem 2016; 291:24280-24292. [PMID: 27694132 PMCID: PMC5104948 DOI: 10.1074/jbc.m116.740506] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 09/23/2016] [Indexed: 12/22/2022] Open
Abstract
StAR-related lipid transfer (START) domains are phospholipid- or sterol-binding modules that are present in many proteins. START domain-containing proteins (START proteins) play important functions in eukaryotic cells, including the redistribution of phospholipids to subcellular compartments and delivering sterols to the mitochondrion for steroid synthesis. How the activity of the START domain is regulated remains unknown for most of these proteins. The Plasmodium falciparum START protein PFA0210c (PF3D7_0104200) is a broad-spectrum phospholipid transfer protein that is conserved in all sequenced Plasmodium species and is most closely related to the mammalian START proteins STARD2 and STARD7. PFA0210c is unusual in that it contains a signal sequence and a PEXEL export motif that together mediate transfer of the protein from the parasite to the host erythrocyte. The protein also contains a C-terminal extension, which is very uncommon among mammalian START proteins. Whereas the biochemical properties of PFA0210c have been characterized, the function of the protein remains unknown. Here, we provide evidence that the unusual C-terminal extension negatively regulates phospholipid transfer activity. Furthermore, we use the genetically tractable Plasmodium knowlesi model and recently developed genetic technology in P. falciparum to show that the protein is essential for growth of the parasite during the clinically relevant asexual blood stage life cycle. Finally, we show that the regulation of phospholipid transfer by PFA0210c is required in vivo, and we identify a potential second regulatory domain. These findings provide insight into a novel mechanism of regulation of phospholipid transfer in vivo and may have important implications for the interaction of the malaria parasite with its host cell.
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Affiliation(s)
- Ross J Hill
- From the The Francis Crick Institute, Mill Hill Laboratory, The Ridgeway, Mill Hill, London NW7 1AA and
| | - Alessa Ringel
- From the The Francis Crick Institute, Mill Hill Laboratory, The Ridgeway, Mill Hill, London NW7 1AA and
| | - Ellen Knuepfer
- From the The Francis Crick Institute, Mill Hill Laboratory, The Ridgeway, Mill Hill, London NW7 1AA and
| | | | - Michael J Blackman
- From the The Francis Crick Institute, Mill Hill Laboratory, The Ridgeway, Mill Hill, London NW7 1AA and
- Pathogen Molecular Biology, London School of Hygiene & Tropical Medicine, London WC1E 7HT, United Kingdom
| | - Christiaan van Ooij
- From the The Francis Crick Institute, Mill Hill Laboratory, The Ridgeway, Mill Hill, London NW7 1AA and
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20
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Flores-Martín J, Reyna L, Ridano ME, Panzetta-Dutari GM, Genti-Raimondi S. Suppression of StarD7 promotes endoplasmic reticulum stress and induces ROS production. Free Radic Biol Med 2016; 99:286-295. [PMID: 27554972 DOI: 10.1016/j.freeradbiomed.2016.08.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 07/29/2016] [Accepted: 08/17/2016] [Indexed: 11/19/2022]
Abstract
StarD7 is an intracellular lipid transport protein identified as up-regulated in the choriocarcinoma JEG-3 cell line. StarD7 facilitates the delivery of phosphatidylcholine (PC) to the mitochondria, and StarD7 knockdown causes a reduction in phospholipid synthesis. Since inhibition of PC synthesis may lead to endoplasmic reticulum (ER) stress we hypothesized that StarD7 may be involved in maintaining cell homeostasis. Here, we examined the effect of StarD7 silencing on ER stress response and on the levels of reactive oxygen species (ROS) in the human hepatoma cell line HepG2. StarD7 knockdown induced alterations in mitochondria and ER morphology. These changes were accompanied with an ER stress response as determined by increased expression of inositol-requiring enzyme 1α (IRE1α), calnexin, glucose regulated protein 78/immunoglobulin heavy chain-binding protein (Grp78/BiP), protein kinase-like ER kinase (PERK) as well as the phosphorylated eukaryotic translation initiation factor 2, subunit 1α (p-eIF2α). Additionally, a downregulation of the tumor suppressor p53 by a degradation mechanism was observed in StarD7 siRNA cells. Furthermore, StarD7 silencing induced ROS generation and reduced cell viability after H2O2 exposure. Decreased expression of StarD7 was associated to increased levels of the heme oxygenase-1 (HO-1) and catalase enzymes as well as in catalase enzymatic activity. Finally, no changes in levels of autophagy and apoptosis markers were observed in StarD7 siRNA treated cells respect to control cells. Taken together, these results indicate that StarD7 contributes to modulate cellular redox homeostasis.
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Affiliation(s)
- Jésica Flores-Martín
- Universidad Nacional de Córdoba-Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Químicas, Departamento de Bioquímica Clínica-Centro de Investigaciones en Bioquímica Clínica e Inmunología, Haya de la Torre y Medina Allende, X5000HUA Córdoba, Argentina
| | - Luciana Reyna
- Universidad Nacional de Córdoba-Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Químicas, Departamento de Bioquímica Clínica-Centro de Investigaciones en Bioquímica Clínica e Inmunología, Haya de la Torre y Medina Allende, X5000HUA Córdoba, Argentina
| | - Magali E Ridano
- Universidad Nacional de Córdoba-Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Químicas, Departamento de Bioquímica Clínica-Centro de Investigaciones en Bioquímica Clínica e Inmunología, Haya de la Torre y Medina Allende, X5000HUA Córdoba, Argentina
| | - Graciela M Panzetta-Dutari
- Universidad Nacional de Córdoba-Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Químicas, Departamento de Bioquímica Clínica-Centro de Investigaciones en Bioquímica Clínica e Inmunología, Haya de la Torre y Medina Allende, X5000HUA Córdoba, Argentina
| | - Susana Genti-Raimondi
- Universidad Nacional de Córdoba-Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Químicas, Departamento de Bioquímica Clínica-Centro de Investigaciones en Bioquímica Clínica e Inmunología, Haya de la Torre y Medina Allende, X5000HUA Córdoba, Argentina.
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21
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Horibata Y, Ando H, Zhang P, Vergnes L, Aoyama C, Itoh M, Reue K, Sugimoto H. StarD7 Protein Deficiency Adversely Affects the Phosphatidylcholine Composition, Respiratory Activity, and Cristae Structure of Mitochondria. J Biol Chem 2016; 291:24880-24891. [PMID: 27694445 DOI: 10.1074/jbc.m116.736793] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 08/30/2016] [Indexed: 12/17/2022] Open
Abstract
Phosphatidylcholine (PC) is a major phospholipid of mitochondria, comprising 40-50% of both the outer and the inner membranes. However, PC must be imported from its production organelles because mitochondria lack the enzymes essential for PC biosynthesis. In a previous study, we found that StarD7 mediates the intracellular transfer of PC to mitochondria. Therefore, in this study, we analyzed the contribution of StarD7 to the maintenance of mitochondrial phospholipid content and function using siRNA-mediated knockdown and knock-out (KO) of the StarD7 gene in HEPA-1 cells. Real time analysis of respiratory activity demonstrated that the oxygen consumption rate and activity of mitochondrial complexes were impaired in StarD7-KD cells. To confirm these results, we established StarD7-KO HEPA-1 cells by double nicking using CRISPR/Cas9n. As expected, StarD7-KD and -KO cells showed a significant reduction in mitochondrial PC content. The ATP level and growth rate of KO cells were notably lower compared with wild-type cells when cultured in glucose-free galactose-containing medium to force cells to rely on mitochondrial ATP production. In KO cells, the level of the MTCO1 protein, a primary subunit of complex IV, was reduced without a concomitant decrease in its mRNA, but the level was restored when StarD7-I was overexpressed. StarD7-KO cells showed impaired formation of the mitochondrial supercomplexes and exhibited a disorganized cristae structure, with no changes in optic atrophy 1 protein. These findings indicate that StarD7 plays important roles in maintaining the proper composition of mitochondrial phospholipids as well as mitochondrial function and morphogenesis.
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Affiliation(s)
- Yasuhiro Horibata
- From the Department of Biochemistry, Dokkyo Medical University School of Medicine, 880 Kitakobayashi, Mibu, Tochigi, Japan and
| | - Hiromi Ando
- From the Department of Biochemistry, Dokkyo Medical University School of Medicine, 880 Kitakobayashi, Mibu, Tochigi, Japan and
| | - Peixiang Zhang
- the Department of Human Genetics, David Geffen School of Medicine and
| | - Laurent Vergnes
- the Department of Human Genetics, David Geffen School of Medicine and
| | - Chieko Aoyama
- From the Department of Biochemistry, Dokkyo Medical University School of Medicine, 880 Kitakobayashi, Mibu, Tochigi, Japan and
| | - Masahiko Itoh
- From the Department of Biochemistry, Dokkyo Medical University School of Medicine, 880 Kitakobayashi, Mibu, Tochigi, Japan and
| | - Karen Reue
- the Department of Human Genetics, David Geffen School of Medicine and.,the Molecular Biology Institute at UCLA, Los Angeles, California 90095
| | - Hiroyuki Sugimoto
- From the Department of Biochemistry, Dokkyo Medical University School of Medicine, 880 Kitakobayashi, Mibu, Tochigi, Japan and
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22
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Gerl MJ, Bittl V, Kirchner S, Sachsenheimer T, Brunner HL, Lüchtenborg C, Özbalci C, Wiedemann H, Wegehingel S, Nickel W, Haberkant P, Schultz C, Krüger M, Brügger B. Sphingosine-1-Phosphate Lyase Deficient Cells as a Tool to Study Protein Lipid Interactions. PLoS One 2016; 11:e0153009. [PMID: 27100999 PMCID: PMC4839656 DOI: 10.1371/journal.pone.0153009] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 03/21/2016] [Indexed: 12/11/2022] Open
Abstract
Cell membranes contain hundreds to thousands of individual lipid species that are of structural importance but also specifically interact with proteins. Due to their highly controlled synthesis and role in signaling events sphingolipids are an intensely studied class of lipids. In order to investigate their metabolism and to study proteins interacting with sphingolipids, metabolic labeling based on photoactivatable sphingoid bases is the most straightforward approach. In order to monitor protein-lipid-crosslink products, sphingosine derivatives containing a reporter moiety, such as a radiolabel or a clickable group, are used. In normal cells, degradation of sphingoid bases via action of the checkpoint enzyme sphingosine-1-phosphate lyase occurs at position C2-C3 of the sphingoid base and channels the resulting hexadecenal into the glycerolipid biosynthesis pathway. In case the functionalized sphingosine looses the reporter moiety during its degradation, specificity towards sphingolipid labeling is maintained. In case degradation of a sphingosine derivative does not remove either the photoactivatable or reporter group from the resulting hexadecenal, specificity towards sphingolipid labeling can be achieved by blocking sphingosine-1-phosphate lyase activity and thus preventing sphingosine derivatives to be channeled into the sphingolipid-to-glycerolipid metabolic pathway. Here we report an approach using clustered, regularly interspaced, short palindromic repeats (CRISPR)-associated nuclease Cas9 to create a sphingosine-1-phosphate lyase (SGPL1) HeLa knockout cell line to disrupt the sphingolipid-to-glycerolipid metabolic pathway. We found that the lipid and protein compositions as well as sphingolipid metabolism of SGPL1 knock-out HeLa cells only show little adaptations, which validates these cells as model systems to study transient protein-sphingolipid interactions.
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Affiliation(s)
- Mathias J. Gerl
- Heidelberg University Biochemistry Center, Heidelberg, Germany
- * E-mail: (MJG); (BB)
| | - Verena Bittl
- Heidelberg University Biochemistry Center, Heidelberg, Germany
| | | | | | | | | | - Cagakan Özbalci
- Heidelberg University Biochemistry Center, Heidelberg, Germany
| | | | | | - Walter Nickel
- Heidelberg University Biochemistry Center, Heidelberg, Germany
| | - Per Haberkant
- European Molecular Biology Laboratory, Heidelberg, Germany
| | | | | | - Britta Brügger
- Heidelberg University Biochemistry Center, Heidelberg, Germany
- * E-mail: (MJG); (BB)
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23
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Yang L, Lewkowich I, Apsley K, Fritz JM, Wills-Karp M, Weaver TE. Haploinsufficiency for Stard7 is associated with enhanced allergic responses in lung and skin. THE JOURNAL OF IMMUNOLOGY 2015; 194:5635-43. [PMID: 25980009 DOI: 10.4049/jimmunol.1500231] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 04/19/2015] [Indexed: 11/19/2022]
Abstract
Allergic asthma is a chronic inflammatory disorder that affects ∼20% of the population worldwide. Microarray analyses of nasal epithelial cells from acute asthmatic patients detected a 50% decrease in expression of Stard7, an intracellular phosphatidylcholine transport protein. To determine whether loss of Stard7 expression promotes allergic responses, mice were generated in which one allele of the Stard7 locus was globally disrupted (Stard7 (+/-) mice). OVA sensitization and challenge of Stard7(+/-) mice resulted in a significant increase in pulmonary inflammation, mucous cell metaplasia, airway hyperresponsiveness, and OVA-specific IgE compared with OVA-sensitized/challenged wild-type (WT) mice. This exacerbation was largely Th2-mediated with a significant increase in CD4(+)IL-13(+) T cells and IL-4, IL-5, and IL-13 cytokines. The loss of Stard7 was also associated with increased lung epithelial permeability and activation of proinflammatory dendritic cells in sensitized and/or challenged Stard7 (+/-) mice. Notably, OVA-pulsed dendritic cells from Stard7(+/-) mice were sufficient to confer an exaggerated allergic response in OVA-challenged WT mice, although airway hyperresponsiveness was greater in Stard7(+/-) recipients compared with WT recipients. Enhanced allergic responses in the lung were accompanied by age-dependent development of spontaneous atopic dermatitis. Overall, these data suggest that Stard7 is an important component of a novel protective pathway in tissues exposed to the extracellular environment.
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Affiliation(s)
- Li Yang
- Section of Neonatology, Perinatal and Pulmonary Biology, Perinatal Institute, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229
| | - Ian Lewkowich
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229; and
| | - Karen Apsley
- Section of Neonatology, Perinatal and Pulmonary Biology, Perinatal Institute, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229
| | - Jill M Fritz
- Section of Neonatology, Perinatal and Pulmonary Biology, Perinatal Institute, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229
| | - Marsha Wills-Karp
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205
| | - Timothy E Weaver
- Section of Neonatology, Perinatal and Pulmonary Biology, Perinatal Institute, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229;
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24
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Alpy F, Tomasetto C. START ships lipids across interorganelle space. Biochimie 2014; 96:85-95. [DOI: 10.1016/j.biochi.2013.09.015] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Accepted: 09/17/2013] [Indexed: 11/30/2022]
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25
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van Ooij C, Withers-Martinez C, Ringel A, Cockcroft S, Haldar K, Blackman MJ. Identification of a Plasmodium falciparum phospholipid transfer protein. J Biol Chem 2013; 288:31971-83. [PMID: 24043620 PMCID: PMC3814793 DOI: 10.1074/jbc.m113.474189] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Infection of erythrocytes by the human malaria parasite Plasmodium falciparum results in dramatic modifications to the host cell, including changes to its antigenic and transport properties and the de novo formation of membranous compartments within the erythrocyte cytosol. These parasite-induced structures are implicated in the transport of nutrients, metabolic products, and parasite proteins, as well as in parasite virulence. However, very few of the parasite effector proteins that underlie remodeling of the host erythrocyte are functionally characterized. Using bioinformatic examination and modeling, we have found that the exported P. falciparum protein PFA0210c belongs to the START domain family, members of which mediate transfer of phospholipids, ceramide, or fatty acids between membranes. In vitro phospholipid transfer assays using recombinant PFA0210 confirmed that it can transfer phosphatidylcholine, phosphatidylinositol, phosphatidylethanolamine, and sphingomyelin between phospholipid vesicles. Furthermore, assays using HL60 cells containing radiolabeled phospholipids indicated that orthologs of PFA0210c can also transfer phosphatidylcholine, phosphatidylinositol, and phosphatidylethanolamine. Biochemical and immunochemical analysis showed that PFA0210c associates with membranes in infected erythrocytes at mature stages of intracellular parasite growth. Localization studies in live parasites revealed that the protein is present in the parasitophorous vacuole during growth and is later recruited to organelles in the parasite. Together these data suggest that PFA0210c plays a role in the formation of the membranous structures and nutrient phospholipid transfer in the malaria-parasitized erythrocyte.
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Affiliation(s)
- Christiaan van Ooij
- From the Division of Parasitology, MRC National Institute for Medical Research, Mill Hill, London NW7 1AA, United Kingdom
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