Common structural features facilitate the simultaneous identification and quantification of the five most common juvenile hormones by liquid chromatography-tandem mass spectrometry. (January 2020)

• Record Type: Journal Article
• Authors: Ramirez, Cesar E.; Nouzova, Marcela; Michalkova, Veronika; Fernandez-Lima, Francisco; Noriega, Fernando G.
• Is Part Of: Insect biochemistry and molecular biology. Volume 116(2020)
• Publication Date: 2020-01
• Subjects: Juvenile hormone -- Homologs -- Liquid chromatography -- MRM -- Quantification; Insect biochemistry -- Periodicals; Insects -- Physiology -- Periodicals; Insects -- Molecular aspects -- Periodicals; Biochemistry -- Periodicals; Insectes -- Biochimie -- Périodiques; Insectes -- Composition -- Périodiques; Insectes -- Physiologie -- Périodiques; Insectes -- Aspect moléculaire -- Périodiques; Biochimie -- Périodiques; Biochemistry; Insect biochemistry; Insects -- Molecular aspects; Insects -- Physiology; Periodicals; 572.8157
• DOI: 10.1016/j.ibmb.2019.103287
• Languages: English
• ISSNs: 0965-1748

Abstract

Abstract: This study reports the development and application of a liquid chromatography method coupled to electrospray tandem mass spectrometry (LC-MS/MS) for the identification and quantification of the five most common juvenile hormone (JH) homologs and methyl farnesoate (MF). The protocol allows the simultaneous analysis in a single LC run of JH I, JH II, JH III, JH III bisepoxide (JHB3 ) and JH III skipped bisepoxide (JHSB3 ). The identification of JHs is based on multiple reaction monitoring (MRM), using two of the most abundant fragmentation transitions for each hormone. Addition of deuterated JH III as an internal standard permits the absolute quantification of the different JHs. The JH homologs common structural features led to similar chromatographic behavior, as well as related fragmentation patterns, which facilitated the simultaneous detection of all the homologs in a single LC-MS/MS run. The protocol detects JHs in the low femtomole range, allowing often the analysis of JH in individual insects. Fragmentation of each of the JH homologs generates unique diagnostic ions that permitted the identification and quantification of JHs from samples of different species of Diptera, Lepidoptera, Heteroptera and Hymenoptera. Having a simple protocol, which can undisputedly determine the identity of the homologs present in a particular species, provides us with the opportunity to identify and quantify JHs existing in insects that are pests, vector of diseases or important research models. Graphical abstract: Image 1 Highlights: This protocol allows the simultaneous analysis in a single LC-MS/MS run of JH I, JH II, JH III, JHB3 and JHSB3. The JH homologs common structural features led to similar chromatographic behavior, as well as related fragmentation patterns. Addition of deuterated JH III as an internal standard permits the absolute quantification of the different JHs. The protocol detects JHs in the low femtomole range, allowing often the analysis of JH in individual insects. We identified and quantified JHs from samples of different species of Diptera, Lepidoptera, Heteroptera and Hymenoptera.