Human prolactin point mutations and their projected effect on vasoinhibin generation and vasoinhibin-related diseases
Background A dysregulation of the generation of vasoinhibin hormones by proteolytic cleavage of prolactin has been brought into context with diabetic retinopathy, retinopathy of prematurity, preeclampsia, pregnancy-induced hypertension, and peripartum cardiomyopathy. Factors governing vasoinhibin ge...
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| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
06 November 2017
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| In: |
Frontiers in endocrinology
Year: 2017, Jahrgang: 8 |
| ISSN: | 1664-2392 |
| DOI: | 10.3389/fendo.2017.00294 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.3389/fendo.2017.00294 Verlag, kostenfrei, Volltext: https://www.frontiersin.org/articles/10.3389/fendo.2017.00294/full 
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| Verfasserangaben: | Jakob Triebel, Christin J. Friedrich, Andreas Leuchs, Gonzalo Martínez de la Escalera, Carmen Clapp and Thomas Bertsch |
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| 245 | 1 | 0 | |a Human prolactin point mutations and their projected effect on vasoinhibin generation and vasoinhibin-related diseases |c Jakob Triebel, Christin J. Friedrich, Andreas Leuchs, Gonzalo Martínez de la Escalera, Carmen Clapp and Thomas Bertsch |
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| 520 | |a Background A dysregulation of the generation of vasoinhibin hormones by proteolytic cleavage of prolactin has been brought into context with diabetic retinopathy, retinopathy of prematurity, preeclampsia, pregnancy-induced hypertension, and peripartum cardiomyopathy. Factors governing vasoinhibin generation are incompletely characterized, and the composition of vasoinhibin isoforms in human tissues or compartments, such as the circulation, is unknown. The aim of this study was to determine the possible contribution of PRL point mutations to the generation of vasoinhibins as well as to project their role in vasoinhibin-related diseases. Methods Prolactin sequences, point mutations, and substrate specificity information about the prolactin cleaving enzymes cathepsin D, matrix metalloproteinases 8 and 13, and bone morphogenetic protein 1 were retrieved from public databases. The consequences of point mutations in regard to their possible effect on vasoinhibin levels were projected on the basis of a score indicating the suitability of a particular sequence for enzymatic cleavage that result in vasoinhibin generation. The relative abundance and type of vasoinhibin isoforms were estimated by comparing the relative cleavage efficiency of vasoinhibin-generating enzymes. Results Six point mutations leading to amino acid substitutions in vasoinhibin-generating cleavage sites were found and projected to either facilitate or inhibit vasoinhibin generation. Four mutations affecting vasoinhibin generation in cancer tissues were found. The most likely composition of the relative abundance of vasoinhibin isoforms is projected to be 15 > 17.2 > 16.8 > 17.7 > 18 kDa vasoinhibin. Conclusions Prolactin point mutations are likely to influence vasoinhibin levels by affecting the proteolysis efficiency of vasoinhibin-generating enzymes and should be monitored in patients with vasoinhibin-related diseases. Attempts to characterize vasoinhibin-related diseases should include the 15, 17.2, 16.8, 17.7, and 18 kDa vasoinhibin isoforms. | ||
| 650 | 4 | |a 16K PRL | |
| 650 | 4 | |a Diabetic Retinopathy | |
| 650 | 4 | |a Peripartum cardiomyopathy | |
| 650 | 4 | |a Point mutations | |
| 650 | 4 | |a Preeclampsia | |
| 650 | 4 | |a Prolactin | |
| 650 | 4 | |a prolactin/vasoinhibin axis | |
| 650 | 4 | |a Retinopathy of Prematurity | |
| 650 | 4 | |a vasoinhibin-related diseases | |
| 650 | 4 | |a vasoinhibins | |
| 700 | 1 | |a Bertsch, Thomas |e VerfasserIn |0 (DE-588)105441193X |0 (DE-627)791504999 |0 (DE-576)410254835 |4 aut | |
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