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Li X, Xiao J, Cheng X, Zhang H, Zheng W. Nanomaterial-encapsulated dsRNA of ecdysone-induced early gene E75, a potential RNAi-based SIT strategy for pest control against Bactrocera dorsalis. Int J Biol Macromol 2024; 263:130607. [PMID: 38447848 DOI: 10.1016/j.ijbiomac.2024.130607] [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: 10/31/2023] [Revised: 01/12/2024] [Accepted: 02/18/2024] [Indexed: 03/08/2024]
Abstract
Bactrocera dorsalis is a notorious pest widely distributed across most Asian countries. With the rapid development of pesticide resistance, new pest control methods are urgently needed. RNAi-based sterile insect technique (SIT) is a species-specific pest management strategy for B. dorsalis control. It is of great significance to identify more target genes from B. dorsalis, and improve the RNAi efficiency. In this study, microinjection-based RNAi results showed that six 20E response genes were necessary for male fertility of B. dorsalis, of which E75 was identified as the key target according to the lowest egg-laying number and hatching rate after E75 knockdown. Three nanoparticles chitosan (CS), chitosan‑sodium tripolyphosphate (CS-TPP), and star polycation (SPc) were used to encapsulate dsE75 expressed by HT115 strain. Properties analysis of nanoparticle-dsRNA complexes showed that both CS-TPP-dsRNA and SPc-dsRNA exhibited better properties (smaller size and polydispersity index) than CS-dsRNA. Moreover, oral administration of CS-TPP-dsE75 and SPc-dsE75 by males resulted in more abnormal testis and significantly lower fertility than feeding naked dsE75. Semi-field trials further confirmed that the number of hatched larvae was dramatically reduced in these two groups. Our study not only provides more valuable targets for RNAi-based SIT, but also promotes the application of environment-friendly management against B. dorsalis in the field.
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Affiliation(s)
- Xiaoyang Li
- Key laboratory of Horticultural Plant Biology (MOE), Hubei Hongshan Laboratory, Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, Institute of Urban and Horticultural Entomology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jiedan Xiao
- Key laboratory of Horticultural Plant Biology (MOE), Hubei Hongshan Laboratory, Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, Institute of Urban and Horticultural Entomology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Xiaoqin Cheng
- Key laboratory of Horticultural Plant Biology (MOE), Hubei Hongshan Laboratory, Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, Institute of Urban and Horticultural Entomology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Hongyu Zhang
- Key laboratory of Horticultural Plant Biology (MOE), Hubei Hongshan Laboratory, Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, Institute of Urban and Horticultural Entomology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Weiwei Zheng
- Key laboratory of Horticultural Plant Biology (MOE), Hubei Hongshan Laboratory, Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, Institute of Urban and Horticultural Entomology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
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2
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Gomez A, Gonzalez S, Oke A, Luo J, Duong JB, Esquerra RM, Zimmerman T, Capponi S, Fung JC, Nystul TG. A high-throughput method for quantifying Drosophila fecundity. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.27.587093. [PMID: 38585877 PMCID: PMC10996622 DOI: 10.1101/2024.03.27.587093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Measurements of Drosophila fecundity are used in a wide variety of studies, such as investigations of stem cell biology, nutrition, behavior, and toxicology. In addition, because fecundity assays are performed on live flies, they are suitable for longitudinal studies such as investigations of aging or prolonged chemical exposure. However, standard Drosophila fecundity assays have been difficult to perform in a high-throughput manner because experimental factors such as the physiological state of the flies and environmental cues must be carefully controlled to achieve consistent results. In addition, exposing flies to a large number of different experimental conditions (such as chemical additives in the diet) and manually counting the number of eggs laid to determine the impact on fecundity is time-consuming. We have overcome these challenges by combining a new multiwell fly culture strategy with a novel 3D-printed fly transfer device to rapidly and accurately transfer flies from one plate to another; the RoboCam, a low-cost, custom built robotic camera to capture images of the wells automatically; and an image segmentation pipeline to automatically identify and quantify eggs. We show that this method is compatible with robust and consistent egg laying throughout the assay period; and demonstrate that the automated pipeline for quantifying fecundity is very accurate (r2 = 0.98 for the correlation between the automated egg counts and the ground truth) In addition, we show that this method can be used to efficiently detect the effects on fecundity induced by dietary exposure to chemicals. Taken together, this strategy substantially increases the efficiency and reproducibility of high throughput egg laying assays that require exposing flies to multiple different media conditions.
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Affiliation(s)
- Andreana Gomez
- University of California, San Francisco, Department of Anatomy
| | - Sergio Gonzalez
- San Francisco State University, Department of Biology
- Center for Cellular Construction, San Francisco, CA
| | - Ashwini Oke
- San Francisco State University, Department of Chemistry and Biochemistry; University of California, San Francisco, OB/GYN Department
- IBM Almaden Research Center, San Jose, CA; University of California, San Francisco, Center for Reproductive Sciences
| | - Jiayu Luo
- San Francisco State University, Department of Biology
- Center for Cellular Construction, San Francisco, CA
| | - Johnny B Duong
- Center for Cellular Construction, San Francisco, CA
- San Francisco State University, Department of Chemistry and Biochemistry; University of California, San Francisco, OB/GYN Department
| | - Raymond M Esquerra
- Center for Cellular Construction, San Francisco, CA
- San Francisco State University, Department of Chemistry and Biochemistry; University of California, San Francisco, OB/GYN Department
| | - Thomas Zimmerman
- Center for Cellular Construction, San Francisco, CA
- IBM Almaden Research Center, San Jose, CA; University of California, San Francisco, Center for Reproductive Sciences
| | - Sara Capponi
- Center for Cellular Construction, San Francisco, CA
- IBM Almaden Research Center, San Jose, CA; University of California, San Francisco, Center for Reproductive Sciences
| | - Jennifer C Fung
- San Francisco State University, Department of Chemistry and Biochemistry; University of California, San Francisco, OB/GYN Department
- IBM Almaden Research Center, San Jose, CA; University of California, San Francisco, Center for Reproductive Sciences
- University of California, San Francisco EaRTH Center
| | - Todd G Nystul
- University of California, San Francisco, Department of Anatomy
- San Francisco State University, Department of Chemistry and Biochemistry; University of California, San Francisco, OB/GYN Department
- IBM Almaden Research Center, San Jose, CA; University of California, San Francisco, Center for Reproductive Sciences
- University of California, San Francisco EaRTH Center
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3
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Barton LJ, Sanny J, Packard Dawson E, Nouzova M, Noriega FG, Stadtfeld M, Lehmann R. Juvenile hormones direct primordial germ cell migration to the embryonic gonad. Curr Biol 2024; 34:505-518.e6. [PMID: 38215744 PMCID: PMC10872347 DOI: 10.1016/j.cub.2023.12.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 10/31/2023] [Accepted: 12/12/2023] [Indexed: 01/14/2024]
Abstract
Germ cells are essential to sexual reproduction. Across the animal kingdom, extracellular signaling isoprenoids, such as retinoic acids (RAs) in vertebrates and juvenile hormones (JHs) in invertebrates, facilitate multiple processes in reproduction. Here we investigated the role of these potent signaling molecules in embryonic germ cell development, using JHs in Drosophila melanogaster as a model system. In contrast to their established endocrine roles during larval and adult germline development, we found that JH signaling acts locally during embryonic development. Using an in vivo biosensor, we observed active JH signaling first within and near primordial germ cells (PGCs) as they migrate to the developing gonad. Through in vivo and in vitro assays, we determined that JHs are both necessary and sufficient for PGC migration. Analysis into the mechanisms of this newly uncovered paracrine JH function revealed that PGC migration was compromised when JHs were decreased or increased, suggesting that specific titers or spatiotemporal JH dynamics are required for robust PGC colonization of the gonad. Compromised PGC migration can impair fertility and cause germ cell tumors in many species, including humans. In mammals, retinoids have many roles in development and reproduction. We found that like JHs in Drosophila, RA was sufficient to impact mouse PGC migration in vitro. Together, our study reveals a previously unanticipated role of isoprenoids as local effectors of pre-gonadal PGC development and suggests a broadly shared mechanism in PGC migration.
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Affiliation(s)
- Lacy J Barton
- Department of Cell Biology, Skirball Institute of Biomolecular Medicine, and Howard Hughes Medical Institute, NYU Grossman School of Medicine, 540 First Avenue, New York, NY 10016, USA; Department of Neuroscience, Developmental and Regenerative Biology, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA.
| | - Justina Sanny
- Department of Cell Biology, Skirball Institute of Biomolecular Medicine, and Howard Hughes Medical Institute, NYU Grossman School of Medicine, 540 First Avenue, New York, NY 10016, USA
| | - Emily Packard Dawson
- Department of Cell Biology, Skirball Institute of Biomolecular Medicine, and Howard Hughes Medical Institute, NYU Grossman School of Medicine, 540 First Avenue, New York, NY 10016, USA
| | - Marcela Nouzova
- Department of Biological Sciences and Biomolecular Sciences Institute, Florida International University, 11200 SW 8(th) Street, Miami, FL 33199, USA; Institute of Parasitology, Biology Centre CAS, 37005 Ceske Budejovice, Czech Republic
| | - Fernando Gabriel Noriega
- Department of Biological Sciences and Biomolecular Sciences Institute, Florida International University, 11200 SW 8(th) Street, Miami, FL 33199, USA; Department of Parasitology, University of South Bohemia, 37005 České Budějovice, Czech Republic
| | - Matthias Stadtfeld
- Sanford I. Weill Department of Medicine, Weill Cornell Medicine, 413 E 69th Street, New York, NY, USA
| | - Ruth Lehmann
- Department of Cell Biology, Skirball Institute of Biomolecular Medicine, and Howard Hughes Medical Institute, NYU Grossman School of Medicine, 540 First Avenue, New York, NY 10016, USA; Whitehead Institute for Biomedical Research and Department of Biology, Massachusetts Institute of Technology, 455 Main Street, Cambridge, MA 02142, USA.
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4
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Masuda LHP, Sabino AU, Reinitz J, Ramos AF, Machado-Lima A, Andrioli LP. Global repression by tailless during segmentation. Dev Biol 2024; 505:11-23. [PMID: 37879494 PMCID: PMC10949167 DOI: 10.1016/j.ydbio.2023.09.014] [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: 12/30/2022] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 10/27/2023]
Abstract
The orphan nuclear receptor Tailless (Tll) exhibits conserved roles in brain formation and maintenance that are shared, for example, with vertebrate orthologous forms (Tlx). However, the early expression of tll in two gap domains in the segmentation cascade of Drosophila is unusual even for most other insects. Here we investigate tll regulation on pair-rule stripes. With ectopic misexpression of tll we detected unexpected repression of almost all pair-rule stripes of hairy (h), even-skipped (eve), runt (run), and fushi-tarazu (ftz). Examining Tll embryonic ChIP-chip data with regions mapped as Cis-Regulatory Modules (CRMs) of pair-rule stripes we verified Tll interactions to these regions. With the ChIP-chip data we also verified Tll interactions to the CRMs of gap domains and in the misexpression assay, Tll-mediated repression on Kruppel (Kr), kni (kni) and giant (gt) according to their differential sensitivity to Tll. These results with gap genes confirmed previous data from the literature and argue against indirect repression roles of Tll in the striped pattern. Moreover, the prediction of Tll binding sites in the CRMs of eve stripes and the mathematical modeling of their removal using an experimentally validated theoretical framework shows effects on eve stripes compatible with the absence of a repressor binding to the CRMs. In addition, modeling increased tll levels in the embryo results in the differential repression of eve stripes, agreeing well with the results of the misexpression assay. In genetic assays we investigated eve 5, that is strongly repressed by the ectopic domain and representative of more central stripes not previously implied to be under direct regulation of tll. While this stripe is little affected in tll-, its posterior border is expanded in gt- but detected with even greater expansion in gt-;tll-. We end up by discussing tll with key roles in combinatorial repression mechanisms to contain the expression of medial patterns of the segmentation cascade in the extremities of the embryo.
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Affiliation(s)
| | - Alan Utsuni Sabino
- Departamento de Radiologia e Oncologia, Instituto do Câncer do Estado de São Paulo, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - John Reinitz
- Departments of Statistics, Ecology and Evolution, Molecular Genetics & Cell Biology, Institute of Genomics and Systems Biology, University of Chicago, Chicago, IL, USA
| | | | - Ariane Machado-Lima
- Escola de Artes, Ciências e Humanidades da Universidade de São Paulo, São Paulo, Brazil
| | - Luiz Paulo Andrioli
- Escola de Artes, Ciências e Humanidades da Universidade de São Paulo, São Paulo, Brazil.
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5
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Rumbo M, Pagone V, Piulachs MD. Diverse functions of the ecdysone receptor (EcR) in the panoistic ovary of the German cockroach. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2023; 156:103935. [PMID: 36996928 DOI: 10.1016/j.ibmb.2023.103935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 03/23/2023] [Accepted: 03/23/2023] [Indexed: 05/05/2023]
Abstract
Ecdysone regulates essential processes in insect life. Perhaps the most well-known of these are related to metamorphosis. However, ecdysone is also required to regulate the proliferation and differentiation of germ cells in the ovary. The role of ecdysone in insect oogenesis has been studied in depth in holometabolan species with meroistic ovaries, such as Drosophila melanogaster, while in hemimetabolan species with panoistic ovaries their functions are still poorly understood. In the present work, we studied the role of ecdysone in the ovary of the last nymphal instar of the cockroach Blattella germanica by using RNA interference to reduce the levels of the ecdysone receptor (EcR), and thereby deplete the expression of ecdysteroidogenic genes in the prothoracic gland. However, the expression of ecdysteroidogenic genes was upregulated in the ovary, resulting in cell overproliferation in the germarium, which appeared swollen. By analysing the expression of genes that respond to ecdysone, we found that when the source of 20E is the nymphal ovary, EcR appears to repress 20E-associated genes bypassing early genes signalling.
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Affiliation(s)
- M Rumbo
- Institut de Biologia Evolutiva (CSIC- Universitat Pompeu Fabra), Passeig Maritim de la Barceloneta, 37, 08003, Barcelona, Spain
| | - V Pagone
- Institut de Biologia Evolutiva (CSIC- Universitat Pompeu Fabra), Passeig Maritim de la Barceloneta, 37, 08003, Barcelona, Spain
| | - M D Piulachs
- Institut de Biologia Evolutiva (CSIC- Universitat Pompeu Fabra), Passeig Maritim de la Barceloneta, 37, 08003, Barcelona, Spain.
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6
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Wang L, Zhang S, Hadjipanteli S, Saiz L, Nguyen L, Silva E, Kelleher E. P-element invasion fuels molecular adaptation in laboratory populations of Drosophila melanogaster. Evolution 2023; 77:980-994. [PMID: 36749648 PMCID: PMC10078945 DOI: 10.1093/evolut/qpad017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 01/02/2023] [Accepted: 02/06/2023] [Indexed: 02/08/2023]
Abstract
Transposable elements (TEs) are mobile genetic parasites that frequently invade new host genomes through horizontal transfer. Invading TEs often exhibit a burst of transposition, followed by reduced transposition rates as repression evolves in the host. We recreated the horizontal transfer of P-element DNA transposons into a Drosophila melanogaster host and followed the expansion of TE copies and evolution of host repression in replicate laboratory populations reared at different temperatures. We observed that while populations maintained at high temperatures rapidly go extinct after TE invasion, those maintained at lower temperatures persist, allowing for TE spread and the evolution of host repression. We also surprisingly discovered that invaded populations experienced recurrent insertion of P-elements into a specific long non-coding RNA, lncRNA:CR43651, and that these insertion alleles are segregating at unusually high frequency in experimental populations, indicative of positive selection. We propose that, in addition to driving the evolution of repression, transpositional bursts of invading TEs can drive molecular adaptation.
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Affiliation(s)
- Luyang Wang
- Department of Biology and Biochemistry, University of Houston, Houston, TX, United States
| | - Shuo Zhang
- Department of Biology and Biochemistry, University of Houston, Houston, TX, United States
| | - Savana Hadjipanteli
- Department of Biology and Biochemistry, University of Houston, Houston, TX, United States
| | - Lorissa Saiz
- Department of Biology and Biochemistry, University of Houston, Houston, TX, United States
| | - Lisa Nguyen
- Department of Biology and Biochemistry, University of Houston, Houston, TX, United States
| | - Efren Silva
- Department of Biology and Biochemistry, University of Houston, Houston, TX, United States
| | - Erin Kelleher
- Department of Biology and Biochemistry, University of Houston, Houston, TX, United States
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7
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Semaniuk UV, Gospodaryov DV, Strilbytska OM, Kucharska AZ, Sokół-Łętowska A, Burdyliuk NI, Storey KB, Bayliak MM, Lushchak O. Chili-supplemented food decreases glutathione- S-transferase activity in Drosophila melanogaster females without a change in other parameters of antioxidant system. Redox Rep 2022; 27:221-229. [PMID: 36200601 PMCID: PMC9553170 DOI: 10.1080/13510002.2022.2123884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
OBJECTIVES Many plant-derived anti-aging preparations influence antioxidant defense system. Consumption of food supplemented with chili pepper powder was found to extend lifespan in the fruit fly, Drosophila melanogaster. The present study aimed to test a connection between life-extending effect of chili powder and antioxidant defense system of D. melanogaster. METHODS Flies were reared for 15 days in the mortality cages on food with 0% (control), 0.04%, 0.12%, 0.4%, or 3% chili powder. Antioxidant and related enzymes, as well as oxidative stress indices were measured. RESULTS Female flies that consumed chili-supplemented food had a 40-60% lower glutathione-S-transferase (GST) activity as compared with the control cohort. Activity of superoxide dismutase (SOD) was about 37% higher in males that consumed food with 3% chili powder in comparison with the control cohort. Many of the parameters studied were sex-dependent. CONCLUSIONS Consumption of chili-supplemented food extends lifespan in fruit fly cohorts in a concentration- and gender-dependent manner. However, this extension is not mediated by a strengthening of antioxidant defenses. Consumption of chili-supplemented food does not change the specific relationship between antioxidant and related enzymes in D. melanogaster, and does not change the linkage of the activities of these enzymes to fly gender.
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Affiliation(s)
- Uliana V Semaniuk
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
| | - Dmytro V Gospodaryov
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
| | - Olha M Strilbytska
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
| | - Alicja Z Kucharska
- Department of Fruit, Vegetable and Plant Nutraceutical Technology, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
| | - Anna Sokół-Łętowska
- Department of Fruit, Vegetable and Plant Nutraceutical Technology, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
| | - Nadia I Burdyliuk
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
| | | | - Maria M Bayliak
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
| | - Oleh Lushchak
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine.,Research and Development University, Ivano-Frankivsk, Ukraine
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8
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Hoshino R, Niwa R. Regulation of Mating-Induced Increase in Female Germline Stem Cells in the Fruit Fly Drosophila melanogaster. Front Physiol 2021; 12:785435. [PMID: 34950056 PMCID: PMC8689587 DOI: 10.3389/fphys.2021.785435] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/17/2021] [Indexed: 01/19/2023] Open
Abstract
In many insect species, mating stimuli can lead to changes in various behavioral and physiological responses, including feeding, mating refusal, egg-laying behavior, energy demand, and organ remodeling, which are collectively known as the post-mating response. Recently, an increase in germline stem cells (GSCs) has been identified as a new post-mating response in both males and females of the fruit fly, Drosophila melanogaster. We have extensively studied mating-induced increase in female GSCs of D. melanogaster at the molecular, cellular, and systemic levels. After mating, the male seminal fluid peptide [e.g. sex peptide (SP)] is transferred to the female uterus. This is followed by binding to the sex peptide receptor (SPR), which evokes post-mating responses, including increase in number of female GSCs. Downstream of SP-SPR signaling, the following three hormones and neurotransmitters have been found to act on female GSC niche cells to regulate mating-induced increase in female GSCs: (1) neuropeptide F, a peptide hormone produced in enteroendocrine cells; (2) octopamine, a monoaminergic neurotransmitter synthesized in ovary-projecting neurons; and (3) ecdysone, a steroid hormone produced in ovarian follicular cells. These humoral factors are secreted from each organ and are received by ovarian somatic cells and regulate the strength of niche signaling in female GSCs. This review provides an overview of the latest findings on the inter-organ relationship to regulate mating-induced female GSC increase in D. melanogaster as a model. We also discuss the remaining issues that should be addressed in the future.
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Affiliation(s)
- Ryo Hoshino
- Degree Programs in Life and Earth Sciences, Graduate School of Science and Technology, University of Tsukuba, Tsukuba, Japan
| | - Ryusuke Niwa
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tsukuba, Japan
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