1
|
Chen J, Zhao W, Cao L, Martins RST, Canário AVM. Somatostatin signalling coordinates energy metabolism allocation to reproduction in zebrafish. BMC Biol 2024; 22:163. [PMID: 39075492 PMCID: PMC11288053 DOI: 10.1186/s12915-024-01961-7] [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: 09/18/2023] [Accepted: 07/23/2024] [Indexed: 07/31/2024] Open
Abstract
BACKGROUND Energy allocation between growth and reproduction determines puberty onset and fertility. In mammals, peripheral hormones such as leptin, insulin and ghrelin signal metabolic information to the higher centres controlling gonadotrophin-releasing hormone neurone activity. However, these observations could not be confirmed in lower vertebrates, suggesting that other factors may mediate the energetic trade-off between growth and reproduction. A bioinformatic and experimental study suggested co-regulation of the circadian clock, reproductive axis and growth-regulating genes in zebrafish. While loss-of-function of most of the identified co-regulated genes had no effect or only had mild effects on reproduction, no such information existed about the co-regulated somatostatin, well-known for its actions on growth and metabolism. RESULTS We show that somatostatin signalling is pivotal in regulating fecundity and metabolism. Knock-out of zebrafish somatostatin 1.1 (sst1.1) and somatostatin 1.2 (sst1.2) caused a 20-30% increase in embryonic primordial germ cells, and sst1.2-/- adults laid 40% more eggs than their wild-type siblings. The sst1.1-/- and sst1.2-/- mutants had divergent metabolic phenotypes: the former had 25% more pancreatic α-cells, were hyperglycaemic and glucose intolerant, and had increased adipocyte mass; the latter had 25% more pancreatic β-cells, improved glucose clearance and reduced adipocyte mass. CONCLUSIONS We conclude that somatostatin signalling regulates energy metabolism and fecundity through anti-proliferative and modulatory actions on primordial germ cells, pancreatic insulin and glucagon cells and the hypothalamus. The ancient origin of the somatostatin system suggests it could act as a switch linking metabolism and reproduction across vertebrates. The results raise the possibility of applications in human and animal fertility.
Collapse
Affiliation(s)
- Jie Chen
- International Research Center for Marine Biosciences, Ministry of Science and Technology and National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China
- CCMAR/CIMAR Centro de Ciências do Mar do Algarve, Universidade do Algarve, Campus de Gambelas, Faro, 8005-139, Portugal
| | - Wenting Zhao
- International Research Center for Marine Biosciences, Ministry of Science and Technology and National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China
| | - Lei Cao
- International Research Center for Marine Biosciences, Ministry of Science and Technology and National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China
| | - Rute S T Martins
- CCMAR/CIMAR Centro de Ciências do Mar do Algarve, Universidade do Algarve, Campus de Gambelas, Faro, 8005-139, Portugal
| | - Adelino V M Canário
- International Research Center for Marine Biosciences, Ministry of Science and Technology and National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China.
- CCMAR/CIMAR Centro de Ciências do Mar do Algarve, Universidade do Algarve, Campus de Gambelas, Faro, 8005-139, Portugal.
| |
Collapse
|
2
|
Meyerhof GT, Easwaran S, Bontempo AE, Montell C, Montell DJ. Altered circadian rhythm, sleep, and rhodopsin 7-dependent shade preference during diapause in Drosophila melanogaster. Proc Natl Acad Sci U S A 2024; 121:e2400964121. [PMID: 38917005 PMCID: PMC11228485 DOI: 10.1073/pnas.2400964121] [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: 01/16/2024] [Accepted: 05/22/2024] [Indexed: 06/27/2024] Open
Abstract
To survive adverse environments, many animals enter a dormant state such as hibernation, dauer, or diapause. Various Drosophila species undergo adult reproductive diapause in response to cool temperatures and/or short day-length. While flies are less active during diapause, it is unclear how adverse environmental conditions affect circadian rhythms and sleep. Here we show that in diapause-inducing cool temperatures, Drosophila melanogaster exhibit altered circadian activity profiles, including severely reduced morning activity and an advanced evening activity peak. Consequently, the flies have a single activity peak at a time similar to when nondiapausing flies take a siesta. Temperatures ≤15 °C, rather than photoperiod, primarily drive this behavior. At cool temperatures, flies rapidly enter a deep-sleep state that lacks the sleep cycles of flies at higher temperatures and require high levels of stimulation for arousal. Furthermore, we show that at 25 °C, flies prefer to siesta in the shade, a preference that is virtually eliminated at 10 °C. Resting in the shade is driven by an aversion to blue light that is sensed by Rhodopsin 7 outside of the eyes. Flies at 10 °C show neuronal markers of elevated sleep pressure, including increased expression of Bruchpilot and elevated Ca2+ in the R5 ellipsoid body neurons. Therefore, sleep pressure might overcome blue light aversion. Thus, at the same temperatures that cause reproductive arrest, preserve germline stem cells, and extend lifespan, D. melanogaster are prone to deep sleep and exhibit dramatically altered, yet rhythmic, daily activity patterns.
Collapse
Affiliation(s)
- Geoff T. Meyerhof
- Department of Molecular, Cellular, and Developmental Biology, Santa Barbara, CA93106
- Neuroscience Research Institute, University of California, Santa Barbara, CA93106
| | - Sreesankar Easwaran
- Department of Molecular, Cellular, and Developmental Biology, Santa Barbara, CA93106
- Neuroscience Research Institute, University of California, Santa Barbara, CA93106
| | - Angela E. Bontempo
- Department of Molecular, Cellular, and Developmental Biology, Santa Barbara, CA93106
- Neuroscience Research Institute, University of California, Santa Barbara, CA93106
| | - Craig Montell
- Department of Molecular, Cellular, and Developmental Biology, Santa Barbara, CA93106
- Neuroscience Research Institute, University of California, Santa Barbara, CA93106
| | - Denise J. Montell
- Department of Molecular, Cellular, and Developmental Biology, Santa Barbara, CA93106
- Neuroscience Research Institute, University of California, Santa Barbara, CA93106
| |
Collapse
|
3
|
Hidalgo S, Chiu JC. Integration of photoperiodic and temperature cues by the circadian clock to regulate insect seasonal adaptations. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2024; 210:585-599. [PMID: 37584703 PMCID: PMC11057393 DOI: 10.1007/s00359-023-01667-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 07/27/2023] [Accepted: 08/06/2023] [Indexed: 08/17/2023]
Abstract
Organisms adapt to unfavorable seasonal conditions to survive. These seasonal adaptations rely on the correct interpretation of environmental cues such as photoperiod, and temperature. Genetic studies in several organisms, including the genetic powerhouse Drosophila melanogaster, indicate that circadian clock components, such as period and timeless, are involved in photoperiodic-dependent seasonal adaptations, but our understanding of this process is far from complete. In particular, the role of temperature as a key factor to complement photoperiodic response is not well understood. The development of new sequencing technologies has proven extremely useful in understanding the plastic changes that the clock and other cellular components undergo in different environmental conditions, including changes in gene expression and alternative splicing. This article discusses the integration of photoperiod and temperature for seasonal biology as well as downstream molecular and cellular pathways involved in the regulation of physiological adaptations that occur with changing seasons. We focus our discussion on the current understanding of the involvement of the molecular clock and the circadian clock neuronal circuits in these adaptations in D. melanogaster.
Collapse
Affiliation(s)
- Sergio Hidalgo
- Department of Entomology and Nematology, College of Agricultural and Environmental Sciences, University of California, Davis, CA, 95616, USA
| | - Joanna C Chiu
- Department of Entomology and Nematology, College of Agricultural and Environmental Sciences, University of California, Davis, CA, 95616, USA.
| |
Collapse
|
4
|
Chen J, Nouzova M, Noriega FG, Tatar M. Gut-to-brain regulation of Drosophila aging through neuropeptide F, insulin and juvenile hormone. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.26.600832. [PMID: 38979180 PMCID: PMC11230353 DOI: 10.1101/2024.06.26.600832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Dietary restriction slows aging in many animals, while in some cases the sensory signals from diet alone are sufficient to retard or accelerate lifespan. The digestive tract is a candidate location to sense nutrients, where neuropeptides secreted by enteroendocrine cells (EEC) produce systemic signals in response to food. Here we measure how Drosophila neuropeptide F (NPF) is secreted into adult circulation by enteroendocrine cells and find that specific enteroendocrine cells differentially respond to dietary sugar and yeast. Lifespan is increased when gut NPF is genetically depleted, and this manipulation is sufficient to blunt the longevity benefit conferred by dietary restriction. Depletion of NPF receptors at insulin producing neurons of the brain also increases lifespan, consistent with observations where loss of gut NPF decreases neuronal insulin secretion. The longevity conferred by repressing gut NPF and brain NPF receptors is reversed by treating adults with a juvenile hormone (JH) analog. JH is produced by the adult corpora allata, and inhibition of the insulin receptor at this tissue decreases JH titer and extends lifespan, while this longevity is restored to wild type by treating adults with a JH analog. Overall, enteroendocrine cells of the gut modulate Drosophila aging through interorgan communication mediated by a gut-brain-corpora allata axis, and insulin produced in the brain impacts lifespan through its control of JH titer. These data suggest that we should consider how human incretins and their analogs, which are used to treat obesity and diabetes, may impact aging.
Collapse
Affiliation(s)
- Jiangtian Chen
- Department of Ecology, Evolution and Organismal Biology, Brown University, Providence, RI 02912 USA
| | - Marcela Nouzova
- Institute of Parasitology, Biology Centre CAS, České Budějovice, Czech Republic, 37005
| | - Fernando G. Noriega
- Department of Biological Sciences and Biomolecular Sciences Institute, Florida International University, Miami, FL, 33199 USA
- Department of Parasitology, University of South Bohemia, České Budějovice, 37005 Czech Republic
| | - Marc Tatar
- Department of Ecology, Evolution and Organismal Biology, Brown University, Providence, RI 02912 USA
| |
Collapse
|
5
|
Kim DH, Jang YH, Yun M, Lee KM, Kim YJ. Long-term neuropeptide modulation of female sexual drive via the TRP channel in Drosophila melanogaster. Proc Natl Acad Sci U S A 2024; 121:e2310841121. [PMID: 38412134 DOI: 10.1073/pnas.2310841121] [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: 06/29/2023] [Accepted: 01/17/2024] [Indexed: 02/29/2024] Open
Abstract
Connectomics research has made it more feasible to explore how neural circuits can generate multiple outputs. Female sexual drive provides a good model for understanding reversible, long-term functional changes in motivational circuits. After emerging, female flies avoid male courtship, but they become sexually receptive over 2 d. Mating causes females to reject further mating for several days. Here, we report that pC1 neurons, which process male courtship and regulate copulation behavior, exhibit increased CREB (cAMP response element binding protein) activity during sexual maturation and decreased CREB activity after mating. This increased CREB activity requires the neuropeptide Dh44 (Diuretic hormone 44) and its receptors. A subset of the pC1 neurons secretes Dh44, which stimulates CREB activity and increases expression of the TRP channel Pyrexia (Pyx) in more pC1 neurons. This, in turn, increases pC1 excitability and sexual drive. Mating suppresses pyx expression and pC1 excitability. Dh44 is orthologous to the conserved corticotrophin-releasing hormone family, suggesting similar roles in other species.
Collapse
Affiliation(s)
- Do-Hyoung Kim
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Yong-Hoon Jang
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Minsik Yun
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Kang-Min Lee
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Young-Joon Kim
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| |
Collapse
|
6
|
Hussain T, Metwally E, Murtaza G, Kalhoro DH, Chughtai MI, Tan B, Omur AD, Tunio SA, Akbar MS, Kalhoro MS. Redox mechanisms of environmental toxicants on male reproductive function. Front Cell Dev Biol 2024; 12:1333845. [PMID: 38469179 PMCID: PMC10925774 DOI: 10.3389/fcell.2024.1333845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/25/2024] [Indexed: 03/13/2024] Open
Abstract
Humans and wildlife, including domesticated animals, are exposed to a myriad of environmental contaminants that are derived from various human activities, including agricultural, household, cosmetic, pharmaceutical, and industrial products. Excessive exposure to pesticides, heavy metals, and phthalates consequently causes the overproduction of reactive oxygen species. The equilibrium between reactive oxygen species and the antioxidant system is preserved to maintain cellular redox homeostasis. Mitochondria play a key role in cellular function and cell survival. Mitochondria are vulnerable to damage that can be provoked by environmental exposures. Once the mitochondrial metabolism is damaged, it interferes with energy metabolism and eventually causes the overproduction of free radicals. Furthermore, it also perceives inflammation signals to generate an inflammatory response, which is involved in pathophysiological mechanisms. A depleted antioxidant system provokes oxidative stress that triggers inflammation and regulates epigenetic function and apoptotic events. Apart from that, these chemicals influence steroidogenesis, deteriorate sperm quality, and damage male reproductive organs. It is strongly believed that redox signaling molecules are the key regulators that mediate reproductive toxicity. This review article aims to spotlight the redox toxicology of environmental chemicals on male reproduction function and its fertility prognosis. Furthermore, we shed light on the influence of redox signaling and metabolism in modulating the response of environmental toxins to reproductive function. Additionally, we emphasize the supporting evidence from diverse cellular and animal studies.
Collapse
Affiliation(s)
- Tarique Hussain
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
- Animal Science Division, Nuclear Institute for Agriculture and Biology College, Pakistan Institute of Engineering and Applied Sciences (NIAB-C, PIEAS), Faisalabad, Pakistan
| | - Elsayed Metwally
- Department of Cytology and Histology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Ghulam Murtaza
- Department of Livestock and Fisheries, Government of Sindh, Karachi, Pakistan
| | - Dildar Hussain Kalhoro
- Department of Veterinary Microbiology, Faculty of Animal Husbandry and Veterinary Sciences, Sindh Agriculture University, Tandojam, Sindh, Pakistan
| | - Muhammad Ismail Chughtai
- Animal Science Division, Nuclear Institute for Agriculture and Biology College, Pakistan Institute of Engineering and Applied Sciences (NIAB-C, PIEAS), Faisalabad, Pakistan
| | - Bie Tan
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Ali Dogan Omur
- Department of Artificial Insemination, Faculty, Veterinary Medicine, Ataturk University, Erzurum, Türkiye
| | - Shakeel Ahmed Tunio
- Department of Livestock Management, Faculty of Animal Husbandry and Veterinary Sciences, Sindh Agriculture University, Tandojam, Sindh, Pakistan
| | - Muhammad Shahzad Akbar
- Faculty of Animal Husbandry and Veterinary Sciences, University of Poonch, Rawalakot, Pakistan
| | - Muhammad Saleem Kalhoro
- Department of Agro-Industrial, Food, and Environmental Technology, Faculty of Applied Science, Food and Agro-Industrial Research Centre, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand
| |
Collapse
|
7
|
Easwaran S, Montell DJ. The molecular mechanisms of diapause and diapause-like reversible arrest. Biochem Soc Trans 2023; 51:1847-1856. [PMID: 37800560 PMCID: PMC10657177 DOI: 10.1042/bst20221431] [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: 06/26/2023] [Revised: 09/12/2023] [Accepted: 09/25/2023] [Indexed: 10/07/2023]
Abstract
Diapause is a protective mechanism that many organisms deploy to overcome environmental adversities. Diapause extends lifespan and fertility to enhance the reproductive success and survival of the species. Although diapause states have been known and employed for commercial purposes, for example in the silk industry, detailed molecular and cell biological studies are an exciting frontier. Understanding diapause-like protective mechanisms will shed light on pathways that steer organisms through adverse conditions. One hope is that an understanding of the mechanisms that support diapause might be leveraged to extend the lifespan and/or health span of humans as well as species threatened by climate change. In addition, recent findings suggest that cancer cells that persist after treatment mimic diapause-like states, implying that these programs may facilitate cancer cell survival from chemotherapy and cause relapse. Here, we review the molecular mechanisms underlying diapause programs in a variety of organisms, and we discuss pathways supporting diapause-like states in tumor persister cells.
Collapse
Affiliation(s)
- Sreesankar Easwaran
- Molecular, Cellular, and Developmental Biology Department, University of California, Santa Barbara, CA 93106, U.S.A
| | - Denise J. Montell
- Molecular, Cellular, and Developmental Biology Department, University of California, Santa Barbara, CA 93106, U.S.A
| |
Collapse
|
8
|
Guan GX, Yu XP, Li DT. Post-Mating Responses in Insects Induced by Seminal Fluid Proteins and Octopamine. BIOLOGY 2023; 12:1283. [PMID: 37886993 PMCID: PMC10604773 DOI: 10.3390/biology12101283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 09/23/2023] [Accepted: 09/26/2023] [Indexed: 10/28/2023]
Abstract
Following insect mating, females often exhibit a series of physiological, behavioral, and gene expression changes. These post-mating responses (PMRs) are induced by seminal fluid components other than sperm, which not only form network proteins to assist sperm localization, supplement female-specific protein requirements, and facilitate the formation of specialized functional structures, but also activate neuronal signaling pathways in insects. This review primarily discusses the roles of seminal fluid proteins (SFPs) and octopamine (OA) in various PMRs in insects. It explores the regulatory mechanisms and mediation conditions by which they trigger PMRs, along with the series of gene expression differences they induce. Insect PMRs involve a transition from protein signaling to neuronal signaling, ultimately manifested through neural regulation and gene expression. The intricate signaling network formed as a result significantly influences female behavior and organ function, contributing to both successful reproduction and the outcomes of sexual conflict.
Collapse
Affiliation(s)
| | | | - Dan-Ting Li
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection and Quarantine, College of Life Science, China Jiliang University, Hangzhou 310018, China
| |
Collapse
|
9
|
Hidalgo S, Chiu JC. CRUMB: a shiny-based app to analyze rhythmic feeding in Drosophila using the FLIC system. F1000Res 2023; 12:374. [PMID: 37396048 PMCID: PMC10314183 DOI: 10.12688/f1000research.132587.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/12/2023] [Indexed: 07/04/2023] Open
Abstract
Rhythmic feeding activity has become an important research area for circadian biologists as it is now clear that metabolic input is critical for regulating circadian rhythms, and chrononutrition has been shown to promote health span. In contrast to locomotor activity rhythm, studies conducting high throughput analysis of Drosophila rhythmic food intake have been limited and few monitoring system options are available. One monitoring system, the Fly Liquid-Food Interaction Counter (FLIC) has become popular, but there is a lack of efficient analysis toolkits to facilitate scalability and ensure reproducibility by using unified parameters for data analysis. Here, we developed Circadian Rhythm Using Mealtime Behavior (CRUMB), a user-friendly Shiny app to analyze data collected using the FLIC system. CRUMB leverages the 'plotly' and 'DT' packages to enable interactive raw data review as well as the generation of easily manipulable graphs and data tables. We used the main features of the FLIC master code provided with the system to retrieve feeding events and provide a simplified pipeline to conduct circadian analysis. We also replaced the use of base functions in time-consuming processes such as 'rle' and 'read.csv' with faster versions available from other packages to optimize computing time. We expect CRUMB to facilitate analysis of feeding-fasting rhythm as a robust output of the circadian clock.
Collapse
Affiliation(s)
- Sergio Hidalgo
- Department of Entomology and Nematology, University of California Davis, Davis, California, 94534, USA
| | - Joanna C Chiu
- Department of Entomology and Nematology, University of California Davis, Davis, California, 94534, USA
| |
Collapse
|
10
|
Crosstalk between Nutrition, Insulin, Juvenile Hormone, and Ecdysteroid Signaling in the Classical Insect Model, Rhodnius prolixus. Int J Mol Sci 2022; 24:ijms24010007. [PMID: 36613451 PMCID: PMC9819625 DOI: 10.3390/ijms24010007] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/16/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
The rigorous balance of endocrine signals that control insect reproductive physiology is crucial for the success of egg production. Rhodnius prolixus, a blood-feeding insect and main vector of Chagas disease, has been used over the last century as a model to unravel aspects of insect metabolism and physiology. Our recent work has shown that nutrition, insulin signaling, and two main types of insect lipophilic hormones, juvenile hormone (JH) and ecdysteroids, are essential for successful reproduction in R. prolixus; however, the interplay behind these endocrine signals has not been established. We used a combination of hormone treatments, gene expression analyses, hormone measurements, and ex vivo experiments using the corpus allatum or the ovary, to investigate how the interaction of these endocrine signals might define the hormone environment for egg production. The results show that after a blood meal, circulating JH levels increase, a process mainly driven through insulin and allatoregulatory neuropeptides. In turn, JH feeds back to provide some control over its own biosynthesis by regulating the expression of critical biosynthetic enzymes in the corpus allatum. Interestingly, insulin also stimulates the synthesis and release of ecdysteroids from the ovary. This study highlights the complex network of endocrine signals that, together, coordinate a successful reproductive cycle.
Collapse
|
11
|
Suh GSB, Yu K, Kim YJ, Oh Y, Park JJ. History of Drosophila neurogenetic research in South Korea. J Neurogenet 2022:1-7. [PMID: 36165786 DOI: 10.1080/01677063.2022.2115040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Neurogenetic research using the Drosophila model has immensely expanded around the world. Likewise, scientists in South Korea have leveraged the advantages of Drosophila genetic tools to understand various neurobiological processes. In this special issue, we will overview the history of Drosophila neurogenetic research in South Korea that led to significant discoveries and notably implications. We will describe how Drosophila system was first introduced to elevate neural developmental studies in 1990s. Establishing Drosophila-related resources has been a key venture, which led to the generation of over 100,000 mutant lines and the launch of the K-Gut initiative with Korea Drosophila Research Center (KDRC). These resources have supported the pioneer studies in modeling human disease and understanding genes and neural circuits that regulate animal behavior and physiology.
Collapse
Affiliation(s)
- Greg S B Suh
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Kweon Yu
- Korea Research Institute of Bioscience and Biotechnology (KRIBB), Metabolism and Neurophysiology Research Group, Daejeon, Republic of Korea
| | - Young-Joon Kim
- Department of Biological Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Yangkyun Oh
- Department of Life Sciences, Ewha Womans University, Seoul, Republic of Korea
| | - Joong-Jean Park
- Department of Physiology, Korea University College of Medicine, Seoul, Republic of Korea
| |
Collapse
|
12
|
White MA, Wolfner MF. The Effects of Male Seminal Fluid Proteins on Gut/Gonad Interactions in Drosophila. INSECTS 2022; 13:623. [PMID: 35886799 PMCID: PMC9324770 DOI: 10.3390/insects13070623] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/05/2022] [Accepted: 07/10/2022] [Indexed: 02/04/2023]
Abstract
Mating initiates broad physiological changes encompassing multiple organ systems in females. Elucidating the complex inter- and intra-organ signaling events that coordinate these physiological changes is an important goal in the field of reproductive biology. Further characterization of these complex molecular and physiological interactions is key to understanding how females meet the energetic demands of offspring production. Many recent studies of the fruit fly, Drosophila melanogaster, have described the mechanisms of post-mating changes within the female reproductive tract and digestive system. Additionally, other studies have described post-mating signaling crosstalk between these systems. Interestingly, male seminal fluid proteins have been linked to post-mating responses within the female reproductive tract and gut, and to signaling events between the two organ systems. However, information about the hormonal and neuronal signaling pathways underlying the post-mating signaling events within and between the reproductive tract and digestive systems that are triggered by seminal fluid proteins has yet to be combined into a single view. In this article, we summarize and integrate these studies into a single "network schematic" of the known signaling events within and between the reproductive and digestive systems downstream of male seminal fluid proteins. This synthesis also draws attention to the incomplete parts of these pathways, so that outstanding questions may be addressed in future studies.
Collapse
Affiliation(s)
- Melissa A. White
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
- Baker Institute for Animal Health, Cornell University, Ithaca, NY 14853, USA
| | - Mariana F. Wolfner
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
| |
Collapse
|