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Kerner M, Flach H, Dietmann P, Kühl M, Kühl SJ. The impact of the insecticide acetamiprid on the embryogenesis of the aquatic model organism Xenopus laevis. Environ Toxicol Pharmacol 2023; 103:104278. [PMID: 37734584 DOI: 10.1016/j.etap.2023.104278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/13/2023] [Accepted: 09/18/2023] [Indexed: 09/23/2023]
Abstract
Acetamiprid (ACT) is used extensively in agriculture worldwide, although data on ACT concentrations in natural water bodies and its impact on aquatic organisms are limited. To study whether ACT influences the embryogenesis of the South African clawed frog Xenopus laevis, embryos were incubated in ACT solutions from 0.01 to 100 mg/L. The low concentrations were chosen on the basis of concentrations already found in nature. ACT treatment leads to shorter embryo lengths, intestine malformation and reduced eye areas. It also affects the cranial cartilage and cardiac development as well as the embryo's mobility. The expression of tissue-specific marker genes is affected as well. Thus, our study suggests that pesticides may lead to an increased mortality of non-target organisms and emphasizes the importance of regular testing for ACT concentrations in nature. Our study provides an overview of ACT effects and can therefore be used as a basis for an ACT risk assessment.
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Affiliation(s)
- Marlen Kerner
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Hannah Flach
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Petra Dietmann
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Michael Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Susanne J Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany.
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Flach H, Dietmann P, Liess M, Kühl M, Kühl SJ. Glyphosate without Co-formulants affects embryonic development of the south african clawed frog Xenopus laevis. Ecotoxicol Environ Saf 2023; 260:115080. [PMID: 37262967 DOI: 10.1016/j.ecoenv.2023.115080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 04/16/2023] [Accepted: 05/25/2023] [Indexed: 06/03/2023]
Abstract
BACKGROUND Glyphosate (GLY) is the most widely used herbicide in the world. Due to its mode of action as an inhibitor of the 5-enolpyruvylshikimate-3-phosphate synthase, an important step in the shikimate pathway, specifically in plants, GLY is considered to be of low toxicity to non-target organisms. However, various studies have shown the negative effects of GLY on the mortality and development of different non-target organisms, including insects, rodents, fish and amphibians. To better understand the various effects of GLY in more detail, we studied the effects of GLY without co-formulants during the embryogenesis of the aquatic model organism Xenopus laevis. RESULTS A treatment with GLY affected various morphological endpoints in X. laevis tadpoles (body length, head width and area, eye area). Additionally, GLY interfered with the mobility as well as the neural and cardiac development of the embryos at stage 44/45. We were able to detect detailed structural changes in the cranial nerves and the heart and gained insights into the negative effects of GLY on cardiomyocyte differentiation. CONCLUSION The application of GLY without co-formulants resulted in negative effects on several endpoints in the early embryonic development of X. laevis at concentrations that are environmentally relevant and concentrations that reflect the worst-case scenarios. This indicates that GLY could have a strong negative impact on the survival and lives of amphibians in natural waters. As a result, future GLY approvals should consider its impact on the environment.
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Affiliation(s)
- Hannah Flach
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Petra Dietmann
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Matthias Liess
- Department System-Ecotoxicology, Helmholtz Centre for Environmental Research, UFZ, Permoserstraße 15, 04318 Leipzig, Germany; Institute for Environmental Research (Biology V), RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
| | - Michael Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Susanne J Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany.
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Flach H, Geiß K, Lohse KA, Feickert M, Dietmann P, Pfeffer S, Kühl M, Kühl SJ. The neonicotinoid thiacloprid leads to multiple defects during early embryogenesis of the South African clawed frog (Xenopuslaevis). Food Chem Toxicol 2023; 176:113761. [PMID: 37028742 DOI: 10.1016/j.fct.2023.113761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 03/24/2023] [Accepted: 03/30/2023] [Indexed: 04/09/2023]
Abstract
There is increasing concern about the health effects of pesticides that pollute natural waters. In particular, the use of neonicotinoids, such as thiacloprid (THD), is causing unease. THD is considered non-toxic to non-target vertebrates. Studies classify THD as carcinogenic, toxic to reproduction, and therefore harmful to the environment. A detailed study of possible THD effects during the amphibian embryogenesis is needed because leaching can introduce THD into aquatic environments. We incubated stage 2 embryos of the South African clawed frog in various THD concentrations (0.1-100 mg/L) at 14 °C to study the potential effects of a one-time THD contamination of waters on the early embryogenesis. We showed that THD has, indeed, negative effects on the embryonic development of the X. laevis. A treatment with THD led to a reduced embryonic body length and mobility. Furthermore, a treatment with THD resulted in smaller cranial cartilages, eyes and brains, and the embryos had shorter cranial nerves and an impaired cardiogenesis. On a molecular basis, THD led to a reduced expression of the brain marker emx1 and the heart marker mhcα. Our results underly the importance of a strict and efficient monitoring of the regulatory levels and application areas of THD.
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Affiliation(s)
- Hannah Flach
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Kristina Geiß
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Kim-André Lohse
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Manuel Feickert
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Petra Dietmann
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Sarah Pfeffer
- Institute of Neurobiology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Michael Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Susanne J Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany.
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Schreiner C, Kernl B, Dietmann P, Riegger RJ, Kühl M, Kühl SJ. The Ribosomal Protein L5 Functions During Xenopus Anterior Development Through Apoptotic Pathways. Front Cell Dev Biol 2022; 10:777121. [PMID: 35281111 PMCID: PMC8905602 DOI: 10.3389/fcell.2022.777121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 02/08/2022] [Indexed: 01/24/2023] Open
Abstract
Ribosomal biogenesis is a fundamental process necessary for cell growth and division. Ribosomal protein L5 (Rpl5) is part of the large ribosomal subunit. Mutations in this protein have been associated with the congenital disease Diamond Blackfan anemia (DBA), a so called ribosomopathy. Despite of the ubiquitous need of ribosomes, clinical manifestations of DBA include tissue-specific symptoms, e.g., craniofacial malformations, eye abnormalities, skin pigmentation failure, cardiac defects or liver cirrhosis. Here, we made use of the vertebrate model organism Xenopus laevis and showed a specific expression of rpl5 in the developing anterior tissue correlating with tissues affected in ribosomopathies. Upon Rpl5 knockdown using an antisense-based morpholino oligonucleotide approach, we showed different phenotypes affecting anterior tissue, i.e., defective cranial cartilage, malformed eyes, and microcephaly. Hence, the observed phenotypes in Xenopus laevis resemble the clinical manifestations of DBA. Analyses of the underlying molecular basis revealed that the expression of several marker genes of neural crest, eye, and brain are decreased during induction and differentiation of the respective tissue. Furthermore, Rpl5 knockdown led to decreased cell proliferation and increased cell apoptosis during early embryogenesis. Investigating the molecular mechanisms underlying Rpl5 function revealed a more than additive effect between either loss of function of Rpl5 and loss of function of c-Myc or loss of function of Rpl5 and gain of function of Tp53, suggesting a common signaling pathway of these proteins. The co-injection of the apoptosis blocking molecule Bcl2 resulted in a partial rescue of the eye phenotype, supporting the hypothesis that apoptosis is one main reason for the phenotypes occurring upon Rpl5 knockdown. With this study, we are able to shed more light on the still poorly understood molecular background of ribosomopathies.
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Affiliation(s)
- Corinna Schreiner
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany.,International Graduate School in Molecular Medicine Ulm, Ulm, Germany
| | - Bianka Kernl
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany.,International Graduate School in Molecular Medicine Ulm, Ulm, Germany
| | - Petra Dietmann
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Ricarda J Riegger
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Michael Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Susanne J Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
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Flach H, Basten T, Schreiner C, Dietmann P, Greco S, Nies L, Roßmanith N, Walter S, Kühl M, Kühl SJ. Retinol binding protein 1 affects Xenopus anterior neural development via all-trans retinoic acid signaling. Dev Dyn 2021; 250:1096-1112. [PMID: 33570783 DOI: 10.1002/dvdy.313] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 01/30/2021] [Accepted: 02/03/2021] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Retinol binding protein 1 (Rbp1) acts as an intracellular regulator of vitamin A metabolism and retinoid transport. In mice, Rbp1 deficiency decreases the capacity of hepatic stellate cells to take up all-trans retinol and sustain retinyl ester stores. Furthermore, Rbp1 is crucial for visual capacity. Although the function of Rbp1 has been studied in the mature eye, its role during early anterior neural development has not yet been investigated in detail. RESULTS We showed that rbp1 is expressed in the eye, anterior neural crest cells (NCCs) and prosencephalon of the South African clawed frog Xenopus laevis. Rbp1 knockdown led to defects in eye formation, including microphthalmia and disorganized retinal lamination, and to disturbed induction and differentiation of the eye field, as shown by decreased rax and pax6 expression. Furthermore, it resulted in reduced rax expression in the prosencephalon and affected cranial cartilage. Rbp1 inhibition also interfered with neural crest induction and migration, as shown by twist and slug. Moreover, it led to a significant reduction of the all-trans retinoic acid target gene pitx2 in NCC-derived periocular mesenchyme. The Rbp1 knockdown phenotypes were rescued by pitx2 RNA co-injection. CONCLUSION Rbp1 is crucial for the development of the anterior neural tissue.
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Affiliation(s)
- Hannah Flach
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Thomas Basten
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Corinna Schreiner
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Petra Dietmann
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Sara Greco
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Lea Nies
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Nathalie Roßmanith
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Svenja Walter
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Michael Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Susanne J Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
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Flach H, Krieg J, Hoffmeister M, Dietmann P, Reusch A, Wischmann L, Kernl B, Riegger R, Oess S, Kühl SJ. Nosip functions during vertebrate eye and cranial cartilage development. Dev Dyn 2018; 247:1070-1082. [PMID: 30055071 DOI: 10.1002/dvdy.24659] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 07/01/2018] [Accepted: 07/13/2018] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The nitric oxide synthase interacting protein (Nosip) has been associated with diverse human diseases including psychological disorders. In line, early neurogenesis of mouse and Xenopus is impaired upon Nosip deficiency. Nosip knockout mice show craniofacial defects and the down-regulation of Nosip in the mouse and Xenopus leads to microcephaly. Until now, the exact underlying molecular mechanisms of these malformations were still unknown. RESULTS Here, we show that nosip is expressed in the developing ocular system as well as the anterior neural crest cells of Xenopus laevis. Furthermore, Nosip inhibition causes severe defects in eye formation in the mouse and Xenopus. Retinal lamination as well as dorso-ventral patterning of the retina were affected in Nosip-depleted Xenopus embryos. Marker gene analysis using rax, pax6 and otx2 reveals an interference with the eye field induction and differentiation. A closer look on Nosip-deficient Xenopus embryos furthermore reveals disrupted cranial cartilage structures and an inhibition of anterior neural crest cell induction and migration shown by twist, snai2, and egr2. Moreover, foxc1 as downstream factor of retinoic acid signalling is affected upon Nosip deficiency. CONCLUSIONS Nosip is a crucial factor for the development of anterior neural tissue such the eyes and neural crest cells. Developmental Dynamics 247:1070-1082, 2018. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Hannah Flach
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Julia Krieg
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Meike Hoffmeister
- Institute of Biochemistry II, Goethe University, Frankfurt Medical School, Frankfurt/Main, Germany.,Institute of Biochemistry, Brandenburg Medical School (MHB) Theodor Fontane, Neuruppin, Germany
| | - Petra Dietmann
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Adrian Reusch
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Lisa Wischmann
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Bianka Kernl
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Ricarda Riegger
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Stefanie Oess
- Institute of Biochemistry II, Goethe University, Frankfurt Medical School, Frankfurt/Main, Germany.,Institute of Biochemistry, Brandenburg Medical School (MHB) Theodor Fontane, Neuruppin, Germany
| | - Susanne J Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
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Seigfried FA, Cizelsky W, Pfister AS, Dietmann P, Walther P, Kühl M, Kühl SJ. Frizzled 3 acts upstream of Alcam during embryonic eye development. Dev Biol 2017; 426:69-83. [PMID: 28427856 DOI: 10.1016/j.ydbio.2017.04.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 02/09/2017] [Accepted: 04/14/2017] [Indexed: 12/18/2022]
Abstract
Formation of a functional eye during vertebrate embryogenesis requires different processes such as cell differentiation, cell migration, cell-cell interactions as well as intracellular signalling processes. It was previously shown that the non-canonical Wnt receptor Frizzled 3 (Fzd3) is required for proper eye formation, however, the underlying mechanism is poorly understood. Here we demonstrate that loss of Fzd3 induces severe malformations of the developing eye and that this defect is phenocopied by loss of the activated leukocyte cell adhesion molecule (Alcam). Promoter analysis revealed the presence of a Fzd3 responsive element within the alcam promoter, which is responsible for alcam expression during anterior neural development. In-depth analysis identified the jun N-terminal protein kinase 1 (JNK1) and the transcription factor paired box 2 (Pax2) to be important for the activation of alcam expression. Altogether our study reveals that alcam is activated through non-canonical Wnt signalling during embryonic eye development in Xenopus laevis and shows that this pathway plays a similar role in different tissues.
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Affiliation(s)
- Franziska A Seigfried
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany; International Graduate School in Molecular Medicine Ulm, 89081 Ulm, Germany; Tissue Homeostasis Joint-PhD-Programme in Cooperation with the University of Oulu, Finland
| | - Wiebke Cizelsky
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany; International Graduate School in Molecular Medicine Ulm, 89081 Ulm, Germany
| | - Astrid S Pfister
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Petra Dietmann
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Paul Walther
- Central Facility for Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, D-89081 Ulm, Germany
| | - Michael Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Susanne J Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany.
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Kiem LM, Dietmann P, Linnemann A, Schmeisser MJ, Kühl SJ. The Nedd4 binding protein 3 is required for anterior neural development in Xenopus laevis. Dev Biol 2017; 423:66-76. [DOI: 10.1016/j.ydbio.2017.01.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 01/09/2017] [Accepted: 01/13/2017] [Indexed: 12/18/2022]
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Rothe M, Monteiro F, Dietmann P, Kühl SJ. Comparative expression study of sipa family members during early Xenopus laevis development. Dev Genes Evol 2016; 226:369-82. [DOI: 10.1007/s00427-016-0556-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 06/28/2016] [Indexed: 01/20/2023]
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Rothe M, Kanwal N, Dietmann P, Seigfried F, Hempel A, Schütz D, Reim D, Engels R, Linnemann A, Schmeisser MJ, Bockmann J, Kühl M, Boeckers TM, Kühl SJ. An Epha4/Sipa1l3/Wnt pathway regulates eye development and lens maturation. Development 2016; 144:321-333. [DOI: 10.1242/dev.147462] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 12/06/2016] [Indexed: 01/21/2023]
Abstract
The signal-induced proliferation associated family of proteins comprises four members, SIPA1 and SIPA1L1-1L3. Mutations of the human SIPA1L3 gene result in congenital cataracts. In Xenopus, loss of Sipa1l3 function led to a severe eye phenotype that was distinguished by smaller eyes and lenses including lens fiber cell maturation defects. We found a direct interaction between Sipa1l3 and Epha4, building a functional platform for proper ocular development. Epha4 deficiency phenocopied loss of Sipa1l3 and rescue experiments demonstrated that Epha4 acts up-stream of Sipa1l3 during eye development. Both, Sipa1l3 and Epha4 are required for early eye specification. The ocular phenotype, upon loss of either Epha4 or Sipa1l3, was partially mediated by rax. We demonstrated that canonical Wnt signaling is inhibited downstream of Epha4/Sipa1l3 during normal eye development. Depletion of either Sipa1l3 or Epha4 resulted in an up-regulation of axin2 expression, a direct Wnt/β-catenin target gene. In line with this, Sipa1l3 or Epha4 depletion could be rescued by blocking Wnt/β-catenin or activating non-canonical Wnt signaling. We therefore conclude that this pathomechanism prevents proper eye development and maturation of lens fiber cells resulting in congenital cataracts.
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Affiliation(s)
- Melanie Rothe
- Institute of Biochemistry and Molecular Biology, Ulm University, 89081 Ulm, Germany
- International Graduate School in Molecular Medicine Ulm, 89081 Ulm University, Ulm, Germany
| | - Noreen Kanwal
- Institute for Anatomy and Cell Biology, Ulm University, 89081 Ulm, Germany
- International Graduate School in Molecular Medicine Ulm, 89081 Ulm University, Ulm, Germany
| | - Petra Dietmann
- Institute of Biochemistry and Molecular Biology, Ulm University, 89081 Ulm, Germany
| | - Franziska Seigfried
- Institute of Biochemistry and Molecular Biology, Ulm University, 89081 Ulm, Germany
- International Graduate School in Molecular Medicine Ulm, 89081 Ulm University, Ulm, Germany
| | - Annemarie Hempel
- Institute of Biochemistry and Molecular Biology, Ulm University, 89081 Ulm, Germany
- International Graduate School in Molecular Medicine Ulm, 89081 Ulm University, Ulm, Germany
| | - Desiree Schütz
- Institute of Biochemistry and Molecular Biology, Ulm University, 89081 Ulm, Germany
| | - Dominik Reim
- Institute for Anatomy and Cell Biology, Ulm University, 89081 Ulm, Germany
- International Graduate School in Molecular Medicine Ulm, 89081 Ulm University, Ulm, Germany
| | - Rebecca Engels
- Institute of Biochemistry and Molecular Biology, Ulm University, 89081 Ulm, Germany
| | - Alexander Linnemann
- Institute of Biochemistry and Molecular Biology, Ulm University, 89081 Ulm, Germany
| | - Michael J. Schmeisser
- Institute for Anatomy and Cell Biology, Ulm University, 89081 Ulm, Germany
- Department of Neurology, Ulm University, 89081 Ulm, Germany
| | - Juergen Bockmann
- Institute for Anatomy and Cell Biology, Ulm University, 89081 Ulm, Germany
| | - Michael Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, 89081 Ulm, Germany
| | - Tobias M. Boeckers
- Institute for Anatomy and Cell Biology, Ulm University, 89081 Ulm, Germany
| | - Susanne J. Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, 89081 Ulm, Germany
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