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Wilson ML, Romano SN, Khatri N, Aharon D, Liu Y, Kaufman OH, Draper BW, Marlow FL. Rbpms2 promotes female fate upstream of the nutrient sensing Gator2 complex component, Mios. bioRxiv 2024:2024.01.25.577235. [PMID: 38328218 PMCID: PMC10849709 DOI: 10.1101/2024.01.25.577235] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Reproductive success relies on proper establishment and maintenance of biological sex. In many animals, including mammals, the primary gonad is initially ovary in character. We previously showed the RNA binding protein (RNAbp), Rbpms2, is required for ovary fate in zebrafish. Here, we identified Rbpms2 targets in oocytes (Rbpms2-bound oocyte RNAs; rboRNAs). We identify Rbpms2 as a translational regulator of rboRNAs, which include testis factors and ribosome biogenesis factors. Further, genetic analyses indicate that Rbpms2 promotes nucleolar amplification via the mTorc1 signaling pathway, specifically through the mTorc1-activating Gap activity towards Rags 2 (Gator2) component, Missing oocyte (Mios). Cumulatively, our findings indicate that early gonocytes are in a dual poised, bipotential state in which Rbpms2 acts as a binary fate-switch. Specifically, Rbpms2 represses testis factors and promotes oocyte factors to promote oocyte progression through an essential Gator2-mediated checkpoint, thereby integrating regulation of sexual differentiation factors and nutritional availability pathways in zebrafish oogenesis.
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Affiliation(s)
- Miranda L. Wilson
- Department of Cell, Developmental, and Regenerative Biology. Icahn School of Medicine at Mount Sinai. One Gustave L. Levy Place Box 1020 New York, NY 10029-6574
| | - Shannon N. Romano
- Department of Cell, Developmental, and Regenerative Biology. Icahn School of Medicine at Mount Sinai. One Gustave L. Levy Place Box 1020 New York, NY 10029-6574
| | - Nitya Khatri
- Department of Cell, Developmental, and Regenerative Biology. Icahn School of Medicine at Mount Sinai. One Gustave L. Levy Place Box 1020 New York, NY 10029-6574
| | - Devora Aharon
- Department of Cell, Developmental, and Regenerative Biology. Icahn School of Medicine at Mount Sinai. One Gustave L. Levy Place Box 1020 New York, NY 10029-6574
| | - Yulong Liu
- Department of Molecular and Cellular Biology. University of California. 1 Shields Ave, Davis, CA 95616
| | - Odelya H. Kaufman
- Department of Developmental and Molecular Biology. Albert Einstein College of Medicine. 1300 Morris Park Avenue, Bronx, NY 10461
| | - Bruce W. Draper
- Department of Molecular and Cellular Biology. University of California. 1 Shields Ave, Davis, CA 95616
| | - Florence L. Marlow
- Department of Cell, Developmental, and Regenerative Biology. Icahn School of Medicine at Mount Sinai. One Gustave L. Levy Place Box 1020 New York, NY 10029-6574
- Department of Developmental and Molecular Biology. Albert Einstein College of Medicine. 1300 Morris Park Avenue, Bronx, NY 10461
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2
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Lu T, Lu Y, Wang L, Liu Z, Miao S, Tai Y, Yang B. The serine/threonine kinase Akt gene affects fecundity by reducing Juvenile hormone synthesis in Liposcelis entomophila (Enderlein). Pestic Biochem Physiol 2023; 196:105583. [PMID: 37945269 DOI: 10.1016/j.pestbp.2023.105583] [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: 06/05/2023] [Revised: 08/08/2023] [Accepted: 08/20/2023] [Indexed: 11/12/2023]
Abstract
The serine/threonine kinase Akt is an important component of the insulin signalling pathway (ISP) in regulating insect metabolism, growth, and reproduction. The psocid Liposcelis entomophila (Enderlein) is a distasteful stored products pest for its fecundity. However, the molecular mechanism of Akt that controls vitellogenesis and oviposition in L. entomophila remains obscure. In this study, the function of the Akt gene in the female reproduction of L. entomophila (designated as LeAkt) was characterized and investigated. LeAkt contains a 1587 bp open reading frame encoding a 529 amino acid protein that possesses a conserved Pleckstrin Homology domain (PH) and a Ser/Thr-type protein kinase (S_TKc) domain. The mRNA expression of LeAkt was the highest in female adult stages and peaked for 7-day female adults. In female adult tissues, LeAkt was highly expressed in the head and the ovary, indicating that LeAkt was closely correlated with female ovarian development. LeAkt transcription level was significantly suppressed by oral feeding on artificial diets mixed with dsRNA-LeAkt. RNAi-mediated silencing of LeAkt led to a severe inhibition of vitellogenein (Vg) expression and ovarian development, together with lower fecundity and hatchability compared to that of the normal feeding group, suggesting a critical role for LeAkt in L. entomophila reproduction. Further studies revealed that LeAkt silencing significantly decreased the mRNA levels of several signalling and biosynthetic genes in the juvenile hormone (JH) signalling pathway, such as methoprene-tolerant (LeMet), krüppel homolog 1 (LeKr-h1) and JH methyltransferase (LeJHAMT), leading to a severe inhibition of JH biosynthesis in L. entomophila female adults. These results suggested that LeAkt was affecting JH synthesis, thereby influencing Vg synthesis and ultimately L. entomophila reproduction.
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Affiliation(s)
- Ting Lu
- School of Food Science and Strategic Reserves, Henan University of Technology, Zhengzhou, China
| | - Yujie Lu
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, China; School of Food Science and Strategic Reserves, Henan University of Technology, Zhengzhou, China.
| | - Lei Wang
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Zhipei Liu
- School of Food Science and Technology, The University of New South Wales, Australia
| | - Shiyuan Miao
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Yajie Tai
- School of Food Science and Strategic Reserves, Henan University of Technology, Zhengzhou, China
| | - Binbin Yang
- School of Food Science and Strategic Reserves, Henan University of Technology, Zhengzhou, China
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Banerjee A, Ray A, Barpanda A, Dash A, Gupta I, Nissa MU, Zhu H, Shah A, Duttagupta SP, Goel A, Srivastava S. Evaluation of autoantibody signatures in pituitary adenoma patients using human proteome arrays. Proteomics Clin Appl 2022; 16:e2100111. [PMID: 35939377 DOI: 10.1002/prca.202100111] [Citation(s) in RCA: 2] [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: 03/07/2022] [Revised: 07/08/2022] [Accepted: 08/03/2022] [Indexed: 12/30/2022]
Abstract
PURPOSE To identify the specific diagnostic biomarkers related to pituitary adenomas (PAs), we performed serological antibody profiles for three types of PAs, namely Acromegaly, Cushing's and Nonfunctional Pituitary Adenomas (NFPAs), using the human proteome (HuProt) microarray. This is the first study describing the serum autoantibody profile of PAs. EXPERIMENTAL DESIGN We performed serological autoantibody profiling of four healthy controls, four Acromegaly, three Cushing's and three NFPAs patient samples to obtain their autoantibody profiles, which were used for studying expression, interaction and altered biological pathways. Further, significant autoantibodies of PAs were compared with data available for glioma, meningioma and AAgAtlas for their specificity. RESULTS Autoantibody profile of PAs led to the identification of differentially expressed significant proteins such as AKNAD1 (AT-Hook Transcription Factor [AKNA] Domain Containing 1), NINJ1 (Nerve injury-induced protein 1), L3HYPDH (Trans-3-hydroxy-L-proline dehydratase), RHOG (Rho-related GTP-binding protein) and PTP4A1 (Protein Tyrosine Phosphatase Type IVA 1) in Acromegaly. Protein ABR (Active breakpoint cluster region-related protein), ST6GALNAC6 (ST6 N-acetylgalactosaminide alpha-2, 6-sialyltransferase 6), NOL3 (Nucleolar protein 3), ANXA8 (Annexin A8) and POLR2H (RNA polymerase II, I and III subunit H) showed an antigenic response in Cushing's patient's serum samples. Protein dipeptidyl peptidase 3 (DPP3) and reticulon-4 (RTN4) exhibited a very high antigenic response in NFPA patients. These proteins hold promise as potential autoantibody biomarkers in PAs.
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Affiliation(s)
- Arghya Banerjee
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, India
| | - Arka Ray
- Centre for Research in Nanotechnology & Science (CRNTS), Indian Institute of Technology Bombay, Powai, Mumbai, India
| | - Abhilash Barpanda
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, India
| | - Ankita Dash
- Miranda House, University of Delhi, University Enclave, New Delhi, Delhi, India
| | - Ishika Gupta
- Department of Biotechnology Engineering, University Institute of Engineering and Technology, Panjab University, Chandigarh, India
| | - Mehar Un Nissa
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, India
| | - Heng Zhu
- Department of Pharmacology and Molecular Sciences/High-Throughput Biology Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Abhidha Shah
- Department of Neurosurgery at King Edward Memorial Hospital and Seth G. S. Medical College, Parel, Mumbai, India
| | - Siddhartha P Duttagupta
- Department of Electrical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, India
| | - Atul Goel
- Department of Neurosurgery at King Edward Memorial Hospital and Seth G. S. Medical College, Parel, Mumbai, India
| | - Sanjeeva Srivastava
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, India
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Wang T, Liu W, Wang C, Ma X, Akhtar MF, Li Y, Li L. MRKNs: Gene, Functions, and Role in Disease and Infection. Front Oncol 2022; 12:862206. [PMID: 35463379 PMCID: PMC9024132 DOI: 10.3389/fonc.2022.862206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 03/17/2022] [Indexed: 11/26/2022] Open
Abstract
The makorin RING finger protein (MKRN) gene family encodes proteins (makorins) with a characteristic array of zinc-finger motifs present in a wide array from invertebrates to vertebrates. MKRNs (MKRN1, MKRN2, MKRN3, MKRN4) as RING finger E3 ligases that mediate substrate degradation are related with conserved RING finger domains that control multiple cellular components via the ubiquitin-proteasome system (UPS), including p53, p21, FADD, PTEN, p65, Nptx1, GLK, and some viral or bacterial proteins. MKRNs also served as diverse roles in disease, like MKRN1 in transcription regulation, metabolic disorders, and tumors; MKRN2 in testis physiology, neurogenesis, apoptosis, and mutation of MKRN2 regulation signals transduction, inflammatory responses, melanoma, and neuroblastoma; MKRN3 in central precocious puberty (CPP) therapy; and MKRN4 firstly reported as a novel E3 ligase instead of a pseudogene to contribute to systemic lupus erythematosus (SLE). Here, we systematically review advances in the gene’s expression, function, and role of MKRNs orthologs in disease and pathogens infection. Further, MKRNs can be considered targets for the host’s innate intracellular antiviral defenses and disease therapy.
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Affiliation(s)
- Tongtong Wang
- College of Agronomy, Liaocheng University, Liaocheng, China
| | - Wenqiang Liu
- College of Agronomy, Liaocheng University, Liaocheng, China
| | - Changfa Wang
- College of Agronomy, Liaocheng University, Liaocheng, China
| | - Xuelian Ma
- Veterinary Medicine, Xinjiang Agricultural University, Urumqi, China
| | | | - Yubao Li
- College of Agronomy, Liaocheng University, Liaocheng, China
- *Correspondence: Yubao Li, ; Liangliang Li,
| | - Liangliang Li
- College of Agronomy, Liaocheng University, Liaocheng, China
- *Correspondence: Yubao Li, ; Liangliang Li,
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Li Y, Bagheri P, Chang P, Zeng A, Hao J, Fung A, Wu JY, Shi L. Direct Imaging of Lipid Metabolic Changes in Drosophila Ovary During Aging Using DO-SRS Microscopy. Front Aging 2022; 2:819903. [PMID: 35822015 PMCID: PMC9261447 DOI: 10.3389/fragi.2021.819903] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 12/29/2021] [Indexed: 01/09/2023]
Abstract
Emerging studies have shown that lipids and proteins play versatile roles in various aspects of aging. High-resolution in situ optical imaging provides a powerful approach to study the metabolic dynamics of lipids and proteins during aging. Here, we integrated D2O probing and stimulated Raman scattering (DO-SRS) microscopy to directly visualize metabolic changes in aging Drosophila ovary. The subcellular spatial distribution of de novo protein synthesis and lipogenesis in ovary was quantitatively imaged and examined. Our Raman spectra showed that early stages follicles were protein-enriched whereas mature eggs were lipid-enriched. DO-SRS imaging showed a higher protein synthesis in the earlier developing stages and an increased lipid turned over at the late stage. Aged (35 days) flies exhibited a dramatic decrease in metabolic turnover activities of both proteins and lipids, particularly, in the germ stem cell niche of germarium. We found an accumulation of unsaturated lipids in the nurse cells and oocytes in old flies, suggesting that unsaturated lipids may play an important role in the processes of oocyte maturation. We further detected changes in mitochondrial morphology and accumulation of Cytochrome c during aging. To our knowledge, this is the first study that directly visualizes spatiotemporal changes in lipid and protein metabolism in Drosophila ovary during development and aging processes. Our study not only demonstrates the application of a new imaging platform in visualizing metabolic dynamics of lipids and proteins in situ but also unravels how the metabolic activity and lipid distribution change in Drosophila ovary during aging.
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Affiliation(s)
- Yajuan Li
- The Department of Bioengineering, University of California San Diego, La Jolla, CA, United States
| | - Pegah Bagheri
- The Department of Bioengineering, University of California San Diego, La Jolla, CA, United States
| | - Phyllis Chang
- The Department of Bioengineering, University of California San Diego, La Jolla, CA, United States
| | - Audrey Zeng
- The Department of Bioengineering, University of California San Diego, La Jolla, CA, United States
| | - Jie Hao
- The Department of Bioengineering, University of California San Diego, La Jolla, CA, United States
| | - Anthony Fung
- The Department of Bioengineering, University of California San Diego, La Jolla, CA, United States
| | - Jane Y. Wu
- Department of Neurology, Northwestern University, Chicago, IL, United States
| | - Lingyan Shi
- The Department of Bioengineering, University of California San Diego, La Jolla, CA, United States
- *Correspondence: Lingyan Shi,
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6
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Dorogova NV, Zubkova AE, Fedorova ЕV, Bolobolova ЕU, Baricheva ЕМ. [Lack of GAGA protein in Trl mutants causes massive cell death in Drosophila spermatogenesis and oogenesis]. Vavilovskii Zhurnal Genet Selektsii 2021; 25:292-300. [PMID: 34901726 PMCID: PMC8627872 DOI: 10.18699/vj21.033] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 12/24/2020] [Accepted: 12/25/2020] [Indexed: 11/26/2022] Open
Abstract
Белок дрозофилы GAGA (GAF) является фактором эпигенетической регуляции транскрипции
большой группы генов с широким разнообразием клеточных функций. GAF кодируется геном Trithorax-like
(Trl), который экспрессируется в различных органах и тканях на всех стадиях онтогенеза дрозофилы. Мутации этого гена вызывают множественные нарушения развития. В предыдущих работах мы показали, что этот
белок необходим для развития половой системы как самцов, так и самок дрозофилы. Снижение экспрессии
гена Trl приводило ко множественным нарушениям спермато- и оогенеза. Одно из значительных нарушений было связано с массовой деградацией и потерей клеток зародышевого пути, что позволило предположить, что этот белок вовлечен в регуляцию клеточной гибели. В представленной работе мы провели более
детальное цитологическое исследование, чтобы определить, какой тип гибели клеток зародышевого пути
характерен для Trl-мутантов, и происходят ли нарушения или изменения этого процесса по сравнению с
нормой. Полученные результаты показали, что недостаток белка GAF вызывает массовую гибель клеток зародышевого пути как у самок, так и самцов дрозофилы, но проявляется эта гибель в зависимости от пола
по-разному. У самок, мутантных по гену Trl, фенотипически этот процесс не отличается от нормы и в гибнущих яйцевых камерах выявлены признаки апоптоза и аутофагии клеток зародышевого пути. У самцов, мутантных по гену Trl, в отличие от самок, не обнаружены признаки апоптоза. У самцов мутации Trl индуцируют
массовую гибель клеток через аутофагию, что не характерно для сперматогенеза дрозофилы и не описано
ранее ни в норме, ни у мутаций по другим генам. Таким образом, недостаток GAF у мутантов Trl приводит
к усилению апоптотической и аутофагической гибели клеток зародышевого пути. Эктопическая клеточная
гибель и атрофия зародышевой линии, вероятно, связаны с нарушением экспрессии генов-мишеней GAGAфактора, среди которых есть гены, регулирующие как апоптоз, так и аутофагию.
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Affiliation(s)
- N V Dorogova
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - A E Zubkova
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Novosibirsk State University, Novosibirsk, Russia
| | - Е V Fedorova
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Е U Bolobolova
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Е М Baricheva
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
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HuangFu N, Zhu X, Chang G, Wang L, Li D, Zhang K, Gao X, Ji J, Luo J, Cui J. Dynamic transcriptome analysis and Methoprene-tolerant gene knockdown reveal that juvenile hormone regulates oogenesis and vitellogenin synthesis in Propylea Japonica. Genomics 2021; 113:2877-2889. [PMID: 34116170 DOI: 10.1016/j.ygeno.2021.06.002] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 02/22/2021] [Accepted: 06/01/2021] [Indexed: 11/30/2022]
Abstract
Propylea japonica has been regarded as one of the most remarkable natural enemies against aphid in China. However, the mechanism of juvenile hormone (JH) regulation of reproduction in P. japonica is still unclear. In this study, we investigated the JH titers of P. japonica and the development of the ovaries. We selected the six different developmental stages of ladybeetle females for transcriptome sequencing. We identified 583 genes involved in insect reproduction regulation, including 107 insect hormone synthesis signaling pathway-related genes and 476 nutrition-sensing signaling pathway-related genes. Transcriptome analysis indicated that a large number JH synthesis- and metabolism-related enzyme genes and some potential nutrient signal sensing- and transduction-related genes were significantly differentially expressed during P. japonica development. We investigated the effects of Met gene silencing on the reproduction of female adults and found that the ovarian maturation, vitellogenesis, and follicular epithelium development in the dsMet treatment group were significantly inhibited.
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Affiliation(s)
- Ningbo HuangFu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China; Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou 450001, China
| | - Xiangzhen Zhu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Guofeng Chang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Li Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Dongyang Li
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Kaixin Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Xueke Gao
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Jichao Ji
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China; Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou 450001, China.
| | - Junyu Luo
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China; Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou 450001, China.
| | - Jinjie Cui
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China; Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou 450001, China
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8
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Dorogova NV, Galimova YA, Bolobolova EU, Baricheva EM, Fedorova SA. Loss of Drosophila E3 Ubiquitin Ligase Hyd Promotes Extra Mitosis in Germline Cysts and Massive Cell Death During Oogenesis. Front Cell Dev Biol 2020; 8:600868. [PMID: 33240894 PMCID: PMC7680892 DOI: 10.3389/fcell.2020.600868] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 10/20/2020] [Indexed: 12/28/2022] Open
Abstract
The Drosophila hyperplastic disc (hyd) gene is the ortholog of mammalian tumor suppressor EDD, which is implicated in a wide variety of cellular processes, and its regulation is impaired in various tumors. It is a member of the highly conserved HECT family of E3 ubiquitin ligases, which directly attach ubiquitin to targeted substrates. In early works, it was shown that Drosophila Hyd may be a tumor suppressor because it is involved in the control of imaginal-disc cell proliferation and growth. In this study, we demonstrated that Hyd is also important for the regulation of female germ cell proliferation and that its depletion leads to additional germline cell mitoses. Furthermore, we revealed a previously unknown Hyd function associated with the maintenance of germ cells' viability. A reduction in hyd expression by either mutations or RNA interference resulted in large-scale germ cell death at different stages of oogenesis. Thus, the analysis of phenotypes arising from the hyd deficiency points to Hyd's role in the regulation of germline metabolic processes during oogenesis.
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Affiliation(s)
- Natalia V Dorogova
- Department of Cell Biology, Institute of Cytology and Genetics, SB RAS, Novosibirsk, Russia
| | - Yuliya A Galimova
- Department of the Regulation of Genetic Processes, Institute of Molecular and Cellular Biology, SB RAS, Novosibirsk, Russia
| | - Elena Us Bolobolova
- Department of Cell Biology, Institute of Cytology and Genetics, SB RAS, Novosibirsk, Russia
| | - Elina M Baricheva
- Department of Cell Biology, Institute of Cytology and Genetics, SB RAS, Novosibirsk, Russia
| | - Svetlana A Fedorova
- Department of Cell Biology, Institute of Cytology and Genetics, SB RAS, Novosibirsk, Russia
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9
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Dold A, Han H, Liu N, Hildebrandt A, Brüggemann M, Rücklé C, Hänel H, Busch A, Beli P, Zarnack K, König J, Roignant JY, Lasko P. Makorin 1 controls embryonic patterning by alleviating Bruno1-mediated repression of oskar translation. PLoS Genet 2020; 16:e1008581. [PMID: 31978041 PMCID: PMC7001992 DOI: 10.1371/journal.pgen.1008581] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 02/05/2020] [Accepted: 12/20/2019] [Indexed: 11/18/2022] Open
Abstract
Makorins are evolutionary conserved proteins that contain C3H-type zinc finger modules and a RING E3 ubiquitin ligase domain. In Drosophila, maternal Makorin 1 (Mkrn1) has been linked to embryonic patterning but the mechanism remained unsolved. Here, we show that Mkrn1 is essential for axis specification and pole plasm assembly by translational activation of oskar (osk). We demonstrate that Mkrn1 interacts with poly(A) binding protein (pAbp) and binds specifically to osk 3’ UTR in a region adjacent to A-rich sequences. Using Drosophila S2R+ cultured cells we show that this binding site overlaps with a Bruno1 (Bru1) responsive element (BREs) that regulates osk translation. We observe increased association of the translational repressor Bru1 with osk mRNA upon depletion of Mkrn1, indicating that both proteins compete for osk binding. Consistently, reducing Bru1 dosage partially rescues viability and Osk protein level in ovaries from Mkrn1 females. We conclude that Mkrn1 controls embryonic patterning and germ cell formation by specifically activating osk translation, most likely by competing with Bru1 to bind to osk 3’ UTR. To ensure accurate development of the Drosophila embryo, proteins and mRNAs are positioned at specific sites within the embryo. Many of these factors are produced and localized during the development of the egg in the mother. One protein essential for this process that has been heavily studied is Oskar (Osk), which is positioned at the posterior pole. During the localization of osk mRNA, its translation is repressed by the RNA-binding protein Bruno1 (Bru1), ensuring that Osk protein is not present outside of the posterior where it is harmful. At the posterior pole, osk mRNA is activated through mechanisms that are not yet understood. In this work, we show that the conserved protein Makorin 1 (Mkrn1) is a novel factor involved in the translational activation of osk. Mkrn1 binds specifically to osk mRNA, overlapping with a binding site of Bru1, thus alleviating the association of Bru1 with osk. Moreover, Mkrn1 is stabilized by poly(A) binding protein (pAbp), a translational activator that binds osk mRNA in close proximity to one Mkrn1 binding site. Our work thus helps to answer a long-standing question in the field, providing insight about the function of Mkrn1 and more generally into embryonic patterning in animals.
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Affiliation(s)
- Annabelle Dold
- RNA Epigenetics, Institute of Molecular Biology, Mainz, Germany
| | - Hong Han
- Department of Biology, McGill University, Montréal, Québec, Canada
| | - Niankun Liu
- Department of Biology, McGill University, Montréal, Québec, Canada
| | - Andrea Hildebrandt
- Chromatin Biology and Proteomics, Institute of Molecular Biology, Mainz, Germany.,Genomic Views of Splicing Regulation, Institute of Molecular Biology, Mainz, Germany
| | - Mirko Brüggemann
- Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, Frankfurt, Germany
| | - Cornelia Rücklé
- Genomic Views of Splicing Regulation, Institute of Molecular Biology, Mainz, Germany.,Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, Frankfurt, Germany
| | - Heike Hänel
- Genomic Views of Splicing Regulation, Institute of Molecular Biology, Mainz, Germany
| | - Anke Busch
- Bioinformatics Core Facility, Institute of Molecular Biology, Mainz, Germany
| | - Petra Beli
- Chromatin Biology and Proteomics, Institute of Molecular Biology, Mainz, Germany
| | - Kathi Zarnack
- Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, Frankfurt, Germany
| | - Julian König
- Genomic Views of Splicing Regulation, Institute of Molecular Biology, Mainz, Germany
| | - Jean-Yves Roignant
- RNA Epigenetics, Institute of Molecular Biology, Mainz, Germany.,Center for Integrative Genomics, Génopode Building, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - Paul Lasko
- Department of Biology, McGill University, Montréal, Québec, Canada.,Department of Human Genetics, Radboud University Medical Center, Nijmegen, Netherlands
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10
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Ferdenache M, Bezzar-Bendjazia R, Marion-Poll F, Kilani-Morakchi S. Transgenerational effects from single larval exposure to azadirachtin on life history and behavior traits of Drosophila melanogaster. Sci Rep 2019; 9:17015. [PMID: 31745147 PMCID: PMC6863814 DOI: 10.1038/s41598-019-53474-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 11/01/2019] [Indexed: 01/07/2023] Open
Abstract
Azadirachtin is one of the successful botanical pesticides in agricultural use with a broad-spectrum insecticide activity, but its possible transgenerational effects have not been under much scrutiny. The effects of sublethal doses of azadirachtin on life-table traits and oviposition behaviour of a model organism in toxicological studies, D. melanogaster, were evaluated. The fecundity and oviposition preference of flies surviving to single azadirachtin-treated larvae of parental generation was adversely affected and resulted in the reduction of the number of eggs laid and increased aversion to this compound over two successive generations. In parental generation, early exposure to azadirachtin affects adult's development by reducing the number of organisms, delay larval and pupal development; male biased sex ratio and induced morphological alterations. Moreover, adult's survival of the two generations was significantly decreased as compared to the control. Therefore, Single preimaginal azadirachtin treatment can affect flies population dynamics via transgenerational reductions in survival and reproduction capacity as well as reinforcement of oviposition avoidance which can contribute as repellent strategies in integrated pest management programs. The transgenerational effects observed suggest a possible reduction both in application frequency and total amount of pesticide used, would help in reducing both control costs and possible ecotoxicological risks.
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Affiliation(s)
- M Ferdenache
- Laboratory of Applied Animal Biology, Department of Biology, Faculty of Sciences, Badji Mokhtar University of Annaba, 23000, Annaba, Algeria
- Evolution, Génomes, Comportement, Ecologie. CNRS, IRD, Univ Paris-Sud. Université Paris-Saclay, F-91198, Gif-sur-Yvette, France
| | - R Bezzar-Bendjazia
- Laboratory of Applied Animal Biology, Department of Biology, Faculty of Sciences, Badji Mokhtar University of Annaba, 23000, Annaba, Algeria
| | - F Marion-Poll
- Evolution, Génomes, Comportement, Ecologie. CNRS, IRD, Univ Paris-Sud. Université Paris-Saclay, F-91198, Gif-sur-Yvette, France
- AgroParisTech, Paris, France
| | - S Kilani-Morakchi
- Laboratory of Applied Animal Biology, Department of Biology, Faculty of Sciences, Badji Mokhtar University of Annaba, 23000, Annaba, Algeria.
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11
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Abstract
Puberty is a critical period of development regulated by genetic, nutritional, and environmental factors. The role of makorin ring finger protein 3 (MKRN3) in the regulation of pubertal timing was revealed when loss-of-function mutations were identified in patients with central precocious puberty (CPP). To date, MKRN3 mutations are the most common known genetic cause of CPP. MKRN3 is a member of the makorin family of ubiquitin ligases, together with MKRN1 and MKRN2. The Mkrn genes have been identified in both vertebrates and invertebrates and show high evolutionary conservation of their gene and protein structures. While the existence of Mkrn orthologues in a wide spectrum of species suggests a vital cellular role of the makorins, their role in puberty initiation and endocrine functions is just beginning to be investigated. In this review, we discuss recent studies that have shown the involvement of Mkrn3 and other makorins in the regulation of pubertal development and other endocrine functions, including metabolism and fertility, as well as their underlying mechanisms of action.
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Affiliation(s)
- Lydie Naulé
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Ursula B. Kaiser
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
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