1
|
Verble KM, Keaveny EC, Rahman SR, Jenny MJ, Dillon ME, Lozier JD. A rapid return to normal: temporal gene expression patterns following cold exposure in the bumble bee Bombus impatiens. J Exp Biol 2024; 227:jeb247040. [PMID: 38629177 DOI: 10.1242/jeb.247040] [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: 11/16/2023] [Accepted: 04/02/2024] [Indexed: 05/01/2024]
Abstract
Bumble bees are common in cooler climates and many species likely experience periodic exposure to very cold temperatures, but little is known about the temporal dynamics of cold response mechanisms following chill exposure, especially how persistent effects of cold exposure may facilitate tolerance of future events. To investigate molecular processes involved in the temporal response by bumble bees to acute cold exposure, we compared mRNA transcript abundance in Bombus impatiens workers exposed to 0°C for 75 min (inducing chill coma) and control bees maintained at a constant ambient temperature (28°C). We sequenced the 3' end of mRNA transcripts (TagSeq) to quantify gene expression in thoracic tissue of bees at several time points (0, 10, 30, 120 and 720 min) following cold exposure. Significant differences from control bees were only detectable within 30 min after the treatment, with most occurring at the 10 min recovery time point. Genes associated with gluconeogenesis and glycolysis were most notably upregulated, while genes related to lipid and purine metabolism were downregulated. The observed patterns of expression indicate a rapid recovery after chill coma, suggesting an acute differential transcriptional response during recovery from chill coma and return to baseline expression levels within an hour, with no long-term gene expression markers of this cold exposure. Our work highlights the functions and pathways important for acute cold recovery, provides an estimated time frame for recovery from cold exposure in bumble bees, and suggests that cold hardening may be less important for these heterothermic insects.
Collapse
Affiliation(s)
- Kelton M Verble
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Ellen C Keaveny
- Department of Zoology & Physiology and Program in Ecology and Evolution, University of Wyoming, Laramie, WY 82072, USA
| | | | - Matthew J Jenny
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Michael E Dillon
- Department of Zoology & Physiology and Program in Ecology and Evolution, University of Wyoming, Laramie, WY 82072, USA
| | - Jeffrey D Lozier
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
| |
Collapse
|
2
|
Ge LQ, Huang B, Li X, Gu HT, Zheng S, Zhou Z, Miao H, Wu JC. Silencing pyruvate kinase (NlPYK) leads to reduced fecundity in brown planthoppers, Nilaparvata lugens (Stål) (Hemiptera: Delphacidae). ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2017; 96:e21429. [PMID: 29114912 DOI: 10.1002/arch.21429] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Pyruvate kinase (PYK) operates in the glycolytic pathway, responsible for regulating the balance between glycolysis and gluconeogenesis. The previous work indicates PYK acts in development of Drosophila embryos and in embryonic muscle growth, from which it may be inferred that PYK acts in insect fecundity. More to the point, as a central enzyme in the glycolytic pathway, PYK acts in many energy-spending functions in most organisms. On the background findings that triazophos (TZP) stimulates fecundity via increase activities of several genes in brown planthoppers, Nilaparvata lugens, we investigated the combined influence of TZP and silencing a N. lugens PYK (NlPYK) on reproduction-linked biological performance parameters. Here, we report that TZP+dsNlPYK treatments led to reduced (by 26%) ovarian, but not fat body, protein content relative to controls. Ovarian (35%) and fat body (54%) soluble sugar contents were reduced. TZP+dsNlPYK treatments also led to reduced (by about 24%) fecundity, expressed as numbers of eggs laid. These data show directly that NlPYK acts in insect fecundity, probably via increases in glucose metabolism.
Collapse
Affiliation(s)
- Lin-Quan Ge
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, P. R. China
| | - Bo Huang
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, P. R. China
| | - Xin Li
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, P. R. China
| | - Hao-Tian Gu
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, P. R. China
| | - Sui Zheng
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, P. R. China
| | - Ze Zhou
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, P. R. China
| | - Hong Miao
- College of Mechanical Engineering, Yangzhou University, Yangzhou, P. R. China
| | - Jin-Cai Wu
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, P. R. China
| |
Collapse
|
5
|
Fischer JJ, Graebner OY, Dalhoff C, Michaelis S, Schrey AK, Ungewiss J, Andrich K, Jeske D, Kroll F, Glinski M, Sefkow M, Dreger M, Koester H. Comprehensive Identification of Staurosporine-Binding Kinases in the Hepatocyte Cell Line HepG2 using Capture Compound Mass Spectrometry (CCMS). J Proteome Res 2010; 9:806-17. [DOI: 10.1021/pr9007333] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Jenny J. Fischer
- caprotec bioanalytics GmbH, Volmerstrasse 5, 12489 Berlin, Germany, and Leibniz-Institut fuer Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125 Berlin, Germany
| | - Olivia Y. Graebner
- caprotec bioanalytics GmbH, Volmerstrasse 5, 12489 Berlin, Germany, and Leibniz-Institut fuer Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125 Berlin, Germany
| | - Christian Dalhoff
- caprotec bioanalytics GmbH, Volmerstrasse 5, 12489 Berlin, Germany, and Leibniz-Institut fuer Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125 Berlin, Germany
| | - Simon Michaelis
- caprotec bioanalytics GmbH, Volmerstrasse 5, 12489 Berlin, Germany, and Leibniz-Institut fuer Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125 Berlin, Germany
| | - Anna K. Schrey
- caprotec bioanalytics GmbH, Volmerstrasse 5, 12489 Berlin, Germany, and Leibniz-Institut fuer Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125 Berlin, Germany
| | - Jan Ungewiss
- caprotec bioanalytics GmbH, Volmerstrasse 5, 12489 Berlin, Germany, and Leibniz-Institut fuer Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125 Berlin, Germany
| | - Kathrin Andrich
- caprotec bioanalytics GmbH, Volmerstrasse 5, 12489 Berlin, Germany, and Leibniz-Institut fuer Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125 Berlin, Germany
| | - Danny Jeske
- caprotec bioanalytics GmbH, Volmerstrasse 5, 12489 Berlin, Germany, and Leibniz-Institut fuer Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125 Berlin, Germany
| | - Friedrich Kroll
- caprotec bioanalytics GmbH, Volmerstrasse 5, 12489 Berlin, Germany, and Leibniz-Institut fuer Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125 Berlin, Germany
| | - Mirko Glinski
- caprotec bioanalytics GmbH, Volmerstrasse 5, 12489 Berlin, Germany, and Leibniz-Institut fuer Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125 Berlin, Germany
| | - Michael Sefkow
- caprotec bioanalytics GmbH, Volmerstrasse 5, 12489 Berlin, Germany, and Leibniz-Institut fuer Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125 Berlin, Germany
| | - Mathias Dreger
- caprotec bioanalytics GmbH, Volmerstrasse 5, 12489 Berlin, Germany, and Leibniz-Institut fuer Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125 Berlin, Germany
| | - Hubert Koester
- caprotec bioanalytics GmbH, Volmerstrasse 5, 12489 Berlin, Germany, and Leibniz-Institut fuer Molekulare Pharmakologie, Robert-Roessle-Strasse 10, 13125 Berlin, Germany
| |
Collapse
|
6
|
Jayakumar PC, Shouche YS, Patole MS. Functional analysis of Drosophila melanogaster hexokinase Hex-A locus: multiple Initiator-like elements enhance DPE containing promoter activity. INSECT MOLECULAR BIOLOGY 2007; 16:3-13. [PMID: 17257204 DOI: 10.1111/j.1365-2583.2006.00664.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Flight muscle Hexokinase-A (HEX-A) is the most conserved and essential hexokinase isoenzyme among Drosophila species. In this study, the Hex-A locus, encoding the HEX-A isoenzyme, has been analysed for the elements regulating its expression. By sequencing the 5' ends of Hex-A cDNA amplified by 5' RACE, we identified a transcription start site that overlapped the Initiator and downstream promoter elements. A 214 bp sequence, encompassing transcription start sites and promoter elements, was required for minimal promoter activity. DNA sequence to the 5' end of the minimal promoter element did not demonstrate any promoter activity; however, its inclusion with the basal promoter element enhanced the promoter activity. Oligonucleotide competition and site-directed mutagenesis identified the Initiator-like sequences, TCAWT, present in this region that were responsible for enhancing the promoter activity. The Hex-A locus is expressed as a single protein in Drosophila cell line, whereas in pupae, larvae and adult flies, it is expressed as two distinct types.
Collapse
Affiliation(s)
- P C Jayakumar
- National Center for Cell Science, University of Pune Campus, Ganeshkhind, Maharashtra, Pune 411 007, India
| | | | | |
Collapse
|
7
|
Allan AK, Du J, Davies SA, Dow JAT. Genome-wide survey of V-ATPase genes inDrosophilareveals a conserved renal phenotype for lethal alleles. Physiol Genomics 2005; 22:128-38. [PMID: 15855386 DOI: 10.1152/physiolgenomics.00233.2004] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
V-ATPases are ubiquitous, vital proton pumps that play a multiplicity of roles in higher organisms. In many epithelia, they are the major energizer of cotransport processes and have been implicated in functions as diverse as fluid secretion and longevity. The first animal knockout of a V-ATPase was identified in Drosophila, and its recessive lethality demonstrated the essential nature of V-ATPases. This article surveys the entire V-ATPase gene family in Drosophila, both experimentally and in silico. Adult expression patterns of most of the genes are shown experimentally for the first time, using in situ hybridization or reporter gene expression, and these results are reconciled with published expression and microarray data. For each subunit, the single gene identified previously by microarray, as upregulated and abundant in tubules, is shown to be similarly abundant in other epithelia in which V-ATPases are known to be important; there thus appears to be a single dominant “plasma membrane” V-ATPase holoenzyme in Drosophila. This provides the most comprehensive view of V-ATPase expression yet in a multicellular organism. The transparent Malpighian tubule phenotype first identified in lethal alleles of vha55, the gene encoding the B-subunit, is shown to be general to those plasma membrane V-ATPase subunits for which lethal alleles are available, and to be caused by failure to accumulate uric acid crystals. These results coincide with the expression view of the gene family, in which 13 of the genes are specialized for epithelial roles, whereas others have spatially or temporally restricted patterns of expression.
Collapse
Affiliation(s)
- Adrian K Allan
- Institute of Biomedical and Life Sciences Division of Molecular Genetics, University of Glasgow, Glasgow, United Kingdom
| | | | | | | |
Collapse
|