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Landis GN, Bell HS, Peng O, Bognar B, Tong A, Manea TD, Bao H, Han X, Tower J. Dhr96[1] mutation and maternal tudor[1] mutation increase life span and reduce the beneficial effects of mifepristone in mated female Drosophila. PLoS One 2023; 18:e0292820. [PMID: 38127988 PMCID: PMC10735022 DOI: 10.1371/journal.pone.0292820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 09/28/2023] [Indexed: 12/23/2023] Open
Abstract
Mating and receipt of male Sex Peptide hormone cause increased egg laying, increased midgut size and decreased life span in female Drosophila. Feeding mated females with the synthetic steroid mifepristone decreases egg production, reduces midgut size, and increases life span. Here, several gene mutations were assayed to investigate possible mechanisms for mifepristone action. Drosophila Dhr96 is a hormone receptor, and a key positive regulator of midgut lipid uptake and metabolism. Dhr96[1] null mutation increased female life span, and reduced the effects of mifepristone on life span, suggesting that Dhr96[1] mutation and mifepristone may act in part through the same mechanism. Consistent with this idea, lipidomics analysis revealed that mating increases whole-body levels of triglycerides and fatty-acids in triglycerides, and these changes are reversed by mifepristone. Maternal tudor[1] mutation results in females that lack the germ-line and produce no eggs. Maternal tudor[1] mutation increased mated female life span, and reduced but did not eliminate the effects of mating and mifepristone on life span. This indicates that decreased egg production may be related to the life span benefits of mifepristone, but is not essential. Mifepristone increases life span in w[1118] mutant mated females, but did not increase life span in w[1118] mutant virgin females. Mifepristone decreased egg production in w[1118] mutant virgin females, indicating that decreased egg production is not sufficient for mifepristone to increase life span. Mifepristone increases life span in virgin females of some, but not all, white[+] and mini-white[+] strains. Backcrossing of mini-white[+] transgenes into the w[1118] background was not sufficient to confer a life span response to mifepristone in virgin females. Taken together, the data support the hypothesis that mechanisms for mifepristone life span increase involve reduced lipid uptake and/or metabolism, and suggest that mifepristone may increase life span in mated females and virgin females through partly different mechanisms.
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Affiliation(s)
- Gary N. Landis
- Department of Biological Sciences, University of Southern California, Los Angeles, California, United States of America
| | - Hans S. Bell
- Department of Biological Sciences, University of Southern California, Los Angeles, California, United States of America
| | - Oscar Peng
- Department of Biological Sciences, University of Southern California, Los Angeles, California, United States of America
| | - Brett Bognar
- Department of Biological Sciences, University of Southern California, Los Angeles, California, United States of America
| | - Andy Tong
- Department of Biological Sciences, University of Southern California, Los Angeles, California, United States of America
| | - Tomás D. Manea
- Department of Biological Sciences, University of Southern California, Los Angeles, California, United States of America
| | - Hanmei Bao
- Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States of America
| | - Xianlin Han
- Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States of America
- Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States of America
| | - John Tower
- Department of Biological Sciences, University of Southern California, Los Angeles, California, United States of America
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Olivares-Yañez C, Sánchez E, Pérez-Lara G, Seguel A, Camejo PY, Larrondo LF, Vidal EA, Canessa P. A comprehensive transcription factor and DNA-binding motif resource for the construction of gene regulatory networks in Botrytis cinerea and Trichoderma atroviride. Comput Struct Biotechnol J 2021; 19:6212-6228. [PMID: 34900134 PMCID: PMC8637145 DOI: 10.1016/j.csbj.2021.11.012] [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: 08/30/2021] [Revised: 11/11/2021] [Accepted: 11/11/2021] [Indexed: 11/25/2022] Open
Abstract
Botrytis cinerea and Trichoderma atroviride are two relevant fungi in agricultural systems. To gain insights into these organisms' transcriptional gene regulatory networks (GRNs), we generated a manually curated transcription factor (TF) dataset for each of them, followed by a GRN inference utilizing available sequence motifs describing DNA-binding specificity and global gene expression data. As a proof of concept of the usefulness of this resource to pinpoint key transcriptional regulators, we employed publicly available transcriptomics data and a newly generated dual RNA-seq dataset to build context-specific Botrytis and Trichoderma GRNs under two different biological paradigms: exposure to continuous light and Botrytis-Trichoderma confrontation assays. Network analysis of fungal responses to constant light revealed striking differences in the transcriptional landscape of both fungi. On the other hand, we found that the confrontation of both microorganisms elicited a distinct set of differentially expressed genes with changes in T. atroviride exceeding those in B. cinerea. Using our regulatory network data, we were able to determine, in both fungi, central TFs involved in this interaction response, including TFs controlling a large set of extracellular peptidases in the biocontrol agent T. atroviride. In summary, our work provides a comprehensive catalog of transcription factors and regulatory interactions for both organisms. This catalog can now serve as a basis for generating novel hypotheses on transcriptional regulatory circuits in different experimental contexts.
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Affiliation(s)
- Consuelo Olivares-Yañez
- ANID - Millennium Science Initiative Program - Millennium Institute for Integrative Biology (iBio), Avda. Libertador Bernardo O'Higgins 340, Santiago, Chile.,Centro de Biotecnologia Vegetal, Universidad Andres Bello, Republica 330, Santiago, Chile
| | - Evelyn Sánchez
- ANID - Millennium Science Initiative Program - Millennium Institute for Integrative Biology (iBio), Avda. Libertador Bernardo O'Higgins 340, Santiago, Chile.,Centro de Genomica y Bioinformatica, Facultad de Ciencias, Universidad Mayor, Camino la Pirámide 5750, Huechuraba, Santiago, Chile
| | - Gabriel Pérez-Lara
- ANID - Millennium Science Initiative Program - Millennium Institute for Integrative Biology (iBio), Avda. Libertador Bernardo O'Higgins 340, Santiago, Chile.,Centro de Biotecnologia Vegetal, Universidad Andres Bello, Republica 330, Santiago, Chile
| | - Aldo Seguel
- ANID - Millennium Science Initiative Program - Millennium Institute for Integrative Biology (iBio), Avda. Libertador Bernardo O'Higgins 340, Santiago, Chile.,Departamento de Genetica Molecular y Microbiologia, Facultad de Ciencias Biologicas, Pontificia Universidad Catolica de Chile, Avda. Libertador Bernardo O'Higgins 340, Santiago, Chile
| | - Pamela Y Camejo
- ANID - Millennium Science Initiative Program - Millennium Institute for Integrative Biology (iBio), Avda. Libertador Bernardo O'Higgins 340, Santiago, Chile
| | - Luis F Larrondo
- ANID - Millennium Science Initiative Program - Millennium Institute for Integrative Biology (iBio), Avda. Libertador Bernardo O'Higgins 340, Santiago, Chile.,Departamento de Genetica Molecular y Microbiologia, Facultad de Ciencias Biologicas, Pontificia Universidad Catolica de Chile, Avda. Libertador Bernardo O'Higgins 340, Santiago, Chile
| | - Elena A Vidal
- ANID - Millennium Science Initiative Program - Millennium Institute for Integrative Biology (iBio), Avda. Libertador Bernardo O'Higgins 340, Santiago, Chile.,Centro de Genomica y Bioinformatica, Facultad de Ciencias, Universidad Mayor, Camino la Pirámide 5750, Huechuraba, Santiago, Chile.,Escuela de Biotecnologia, Facultad de Ciencias, Universidad Mayor, Camino la Pirámide 5750, Huechuraba, Santiago, Chile
| | - Paulo Canessa
- ANID - Millennium Science Initiative Program - Millennium Institute for Integrative Biology (iBio), Avda. Libertador Bernardo O'Higgins 340, Santiago, Chile.,Centro de Biotecnologia Vegetal, Universidad Andres Bello, Republica 330, Santiago, Chile
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