Impaired leptin signaling causes subfertility in female zebrafish
Reproduction is an energetically costly event across vertebrates and tightly linked to nutritional status and en-ergy reserves. In mammals, the hormone leptin is considered as a link between energy homeostasis and repro-duction. However, its role in fish reproduction is still unclear. In this study,...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/343161 2024-01-07T09:42:16+01:00 Impaired leptin signaling causes subfertility in female zebrafish Tsakoumis, Emmanouil Ahi, Ehsan Pashay Schmitz, Monika Organismal and Evolutionary Biology Research Programme 2022-04-29T09:51:03Z 13 application/pdf http://hdl.handle.net/10138/343161 eng eng ELSEVIER IRELAND LTD 10.1016/j.mce.2022.111595 Funding The work was supported by the Carl Trygger Foundation for Scien-tific Research (CTS 16:413 and CTS 19:805) . Tsakoumis , E , Ahi , E P & Schmitz , M 2022 , ' Impaired leptin signaling causes subfertility in female zebrafish ' , Molecular and Cellular Endocrinology , vol. 546 , 111595 . https://doi.org/10.1016/j.mce.2022.111595 ORCID: /0000-0002-6528-1187/work/112292498 68aebdad-ca75-4f25-9099-cf0bc237ad62 http://hdl.handle.net/10138/343161 000781853800002 cc_by openAccess info:eu-repo/semantics/openAccess Leptin Zebrafish Reproduction Luteinizing hormone Ovulation Oocyte maturation FOLLICLE-STIMULATING-HORMONE MESSENGER-RNA EXPRESSION SEXUAL-MATURATION ATLANTIC SALMON GENE-EXPRESSION TISSUE DISTRIBUTION HOUSEKEEPING GENES ENERGY-BALANCE CHUB MACKEREL RECEPTOR GENE 1181 Ecology evolutionary biology Article publishedVersion 2022 ftunivhelsihelda 2023-12-14T00:09:38Z Reproduction is an energetically costly event across vertebrates and tightly linked to nutritional status and en-ergy reserves. In mammals, the hormone leptin is considered as a link between energy homeostasis and repro-duction. However, its role in fish reproduction is still unclear. In this study, we investigated the possible role of leptin in the regulation of reproduction in zebrafish, using a loss of function leptin receptor (lepr) strain. Impaired leptin signaling resulted in severe reproductive deficiencies in female zebrafish. lepr mutant females laid significantly fewer eggs, with low fertilization rates compared to wild-type females. Folliculogenesis was not affected, but oocyte maturation and ovulation were disrupted in lepr mutants. Interestingly, the expression of luteinizing hormone beta (lhb) in the pituitary was significantly lower in mutant females. Analysis of candidate genes in the ovaries and isolated fully grown follicles revealed differential expression of genes involved in ste-roidogenesis, oocyte maturation and ovulation in the mutants, which are known to be regulated by LH signaling. Moreover, subfertility in lepr mutants could be partially restored by administration of human chorionic gonad-otropin. In conclusion, our results show that leptin deficiency does not affect early stages of follicular devel-opment, but leptin might be essential in later steps, such as in oocyte maturation and ovulation. To our knowledge, this is the first time that leptin is associated to reproductive deficiencies in zebrafish. Peer reviewed Article in Journal/Newspaper Atlantic salmon HELDA – University of Helsinki Open Repository Molecular and Cellular Endocrinology 546 111595 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
Leptin Zebrafish Reproduction Luteinizing hormone Ovulation Oocyte maturation FOLLICLE-STIMULATING-HORMONE MESSENGER-RNA EXPRESSION SEXUAL-MATURATION ATLANTIC SALMON GENE-EXPRESSION TISSUE DISTRIBUTION HOUSEKEEPING GENES ENERGY-BALANCE CHUB MACKEREL RECEPTOR GENE 1181 Ecology evolutionary biology |
spellingShingle |
Leptin Zebrafish Reproduction Luteinizing hormone Ovulation Oocyte maturation FOLLICLE-STIMULATING-HORMONE MESSENGER-RNA EXPRESSION SEXUAL-MATURATION ATLANTIC SALMON GENE-EXPRESSION TISSUE DISTRIBUTION HOUSEKEEPING GENES ENERGY-BALANCE CHUB MACKEREL RECEPTOR GENE 1181 Ecology evolutionary biology Tsakoumis, Emmanouil Ahi, Ehsan Pashay Schmitz, Monika Impaired leptin signaling causes subfertility in female zebrafish |
topic_facet |
Leptin Zebrafish Reproduction Luteinizing hormone Ovulation Oocyte maturation FOLLICLE-STIMULATING-HORMONE MESSENGER-RNA EXPRESSION SEXUAL-MATURATION ATLANTIC SALMON GENE-EXPRESSION TISSUE DISTRIBUTION HOUSEKEEPING GENES ENERGY-BALANCE CHUB MACKEREL RECEPTOR GENE 1181 Ecology evolutionary biology |
description |
Reproduction is an energetically costly event across vertebrates and tightly linked to nutritional status and en-ergy reserves. In mammals, the hormone leptin is considered as a link between energy homeostasis and repro-duction. However, its role in fish reproduction is still unclear. In this study, we investigated the possible role of leptin in the regulation of reproduction in zebrafish, using a loss of function leptin receptor (lepr) strain. Impaired leptin signaling resulted in severe reproductive deficiencies in female zebrafish. lepr mutant females laid significantly fewer eggs, with low fertilization rates compared to wild-type females. Folliculogenesis was not affected, but oocyte maturation and ovulation were disrupted in lepr mutants. Interestingly, the expression of luteinizing hormone beta (lhb) in the pituitary was significantly lower in mutant females. Analysis of candidate genes in the ovaries and isolated fully grown follicles revealed differential expression of genes involved in ste-roidogenesis, oocyte maturation and ovulation in the mutants, which are known to be regulated by LH signaling. Moreover, subfertility in lepr mutants could be partially restored by administration of human chorionic gonad-otropin. In conclusion, our results show that leptin deficiency does not affect early stages of follicular devel-opment, but leptin might be essential in later steps, such as in oocyte maturation and ovulation. To our knowledge, this is the first time that leptin is associated to reproductive deficiencies in zebrafish. Peer reviewed |
author2 |
Organismal and Evolutionary Biology Research Programme |
format |
Article in Journal/Newspaper |
author |
Tsakoumis, Emmanouil Ahi, Ehsan Pashay Schmitz, Monika |
author_facet |
Tsakoumis, Emmanouil Ahi, Ehsan Pashay Schmitz, Monika |
author_sort |
Tsakoumis, Emmanouil |
title |
Impaired leptin signaling causes subfertility in female zebrafish |
title_short |
Impaired leptin signaling causes subfertility in female zebrafish |
title_full |
Impaired leptin signaling causes subfertility in female zebrafish |
title_fullStr |
Impaired leptin signaling causes subfertility in female zebrafish |
title_full_unstemmed |
Impaired leptin signaling causes subfertility in female zebrafish |
title_sort |
impaired leptin signaling causes subfertility in female zebrafish |
publisher |
ELSEVIER IRELAND LTD |
publishDate |
2022 |
url |
http://hdl.handle.net/10138/343161 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_relation |
10.1016/j.mce.2022.111595 Funding The work was supported by the Carl Trygger Foundation for Scien-tific Research (CTS 16:413 and CTS 19:805) . Tsakoumis , E , Ahi , E P & Schmitz , M 2022 , ' Impaired leptin signaling causes subfertility in female zebrafish ' , Molecular and Cellular Endocrinology , vol. 546 , 111595 . https://doi.org/10.1016/j.mce.2022.111595 ORCID: /0000-0002-6528-1187/work/112292498 68aebdad-ca75-4f25-9099-cf0bc237ad62 http://hdl.handle.net/10138/343161 000781853800002 |
op_rights |
cc_by openAccess info:eu-repo/semantics/openAccess |
container_title |
Molecular and Cellular Endocrinology |
container_volume |
546 |
container_start_page |
111595 |
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1787423212785631232 |