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Buchholz BA, Carratt SA, Kuhn EA, Collette NM, Ding X, Van Winkle LS. Naphthalene DNA Adduct Formation and Tolerance in the Lung. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS 2019; 438:119-123. [PMID: 30631217 PMCID: PMC6322674 DOI: 10.1016/j.nimb.2018.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Naphthalene (NA) is a respiratory toxicant and possible human carcinogen. NA is a ubiquitous combustion product and significant component of jet fuel. The National Toxicology Program found that NA forms tumors in two species, in rats (nose) and mice (lung). However, it has been argued that NA does not pose a cancer risk to humans because NA is bioactivated by cytochrome P450 monooxygenase enzymes that have very high efficiency in the lung tissue of rodents but low efficiency in the lung tissue of humans. It is thought that NA carcinogenesis in rodents is related to repeated cycles of lung epithelial injury and repair, an indirect mechanism. Repeated in vivo exposure to NA leads to development of tolerance, with the emergence of cells more resistant to NA insult. We tested the hypothesis that tolerance involves reduced susceptibility to the formation of NA-DNA adducts. NA-DNA adduct formation in tolerant mice was examined in individual, metabolically-active mouse airways exposed ex vivo to 250 μΜ 14C-NA. Ex vivo dosing was used since it had been done previously and the act of creating a radioactive aerosol of a potential carcinogen posed too many safety and regulatory obstacles. Following extensive rinsing to remove unbound 14C-NA, DNA was extracted and 14C-NA-DNA adducts were quantified by AMS. The tolerant mice appeared to have slightly lower NA-DNA adduct levels than non-tolerant controls, but intra-group variations were large and the difference was statistically insignificant. It appears the tolerance may be more related to other mechanisms, such as NA-protein interactions in the airway, than DNA-adduct formation.
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Affiliation(s)
- Bruce A Buchholz
- Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, CA USA
| | - Sarah A Carratt
- Center for Health and the Environment, University of California, Davis, CA USA
| | - Edward A Kuhn
- Bioscience and Biotechnology Division, Lawrence Livermore National Laboratory, Livermore, CA USA
| | - Nicole M Collette
- Bioscience and Biotechnology Division, Lawrence Livermore National Laboratory, Livermore, CA USA
| | - Xinxin Ding
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, Tucson, AZ USA
| | - Laura S Van Winkle
- Center for Health and the Environment, University of California, Davis, CA USA
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Turko AJ, Kültz D, Fudge D, Croll RP, Smith FM, Stoyek MR, Wright PA. Skeletal stiffening in an amphibious fish out of water is a response to increased body weight. ACTA ACUST UNITED AC 2018; 220:3621-3631. [PMID: 29046415 DOI: 10.1242/jeb.161638] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 08/07/2017] [Indexed: 01/06/2023]
Abstract
Terrestrial animals must support their bodies against gravity, while aquatic animals are effectively weightless because of buoyant support from water. Given this evolutionary history of minimal gravitational loading of fishes in water, it has been hypothesized that weight-responsive musculoskeletal systems evolved during the tetrapod invasion of land and are thus absent in fishes. Amphibious fishes, however, experience increased effective weight when out of water - are these fishes responsive to gravitational loading? Contrary to the tetrapod-origin hypothesis, we found that terrestrial acclimation reversibly increased gill arch stiffness (∼60% increase) in the amphibious fish Kryptolebias marmoratus when loaded normally by gravity, but not under simulated microgravity. Quantitative proteomics analysis revealed that this change in mechanical properties occurred via increased abundance of proteins responsible for bone mineralization in other fishes as well as in tetrapods. Type X collagen, associated with endochondral bone growth, increased in abundance almost ninefold after terrestrial acclimation. Collagen isoforms known to promote extracellular matrix cross-linking and cause tissue stiffening, such as types IX and XII collagen, also increased in abundance. Finally, more densely packed collagen fibrils in both gill arches and filaments were observed microscopically in terrestrially acclimated fish. Our results demonstrate that the mechanical properties of the fish musculoskeletal system can be fine-tuned in response to changes in effective body weight using biochemical pathways similar to those in mammals, suggesting that weight sensing is an ancestral vertebrate trait rather than a tetrapod innovation.
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Affiliation(s)
- Andy J Turko
- Department of Integrative Biology, University of Guelph, 50 Stone Road East, Guelph, ON, Canada N1G 2W1
| | - Dietmar Kültz
- Department of Animal Sciences, University of California, Davis, 1 Shields Ave., Meyer Hall, Davis, CA 95616, USA
| | - Douglas Fudge
- Department of Integrative Biology, University of Guelph, 50 Stone Road East, Guelph, ON, Canada N1G 2W1.,Schmid College of Science and Technology, Chapman University, 1 University Dr., Orange, CA 92866, USA
| | - Roger P Croll
- Department of Physiology and Biophysics, Dalhousie University, 5850 College Street, Halifax, Nova Scotia, Canada B3H 4R2
| | - Frank M Smith
- Department of Medical Neuroscience, Dalhousie University, 5850 College Street, Halifax, Nova Scotia, Canada B3H 4R2
| | - Matthew R Stoyek
- Department of Physiology and Biophysics, Dalhousie University, 5850 College Street, Halifax, Nova Scotia, Canada B3H 4R2.,Department of Medical Neuroscience, Dalhousie University, 5850 College Street, Halifax, Nova Scotia, Canada B3H 4R2
| | - Patricia A Wright
- Department of Integrative Biology, University of Guelph, 50 Stone Road East, Guelph, ON, Canada N1G 2W1
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Wisnewski AV, Kanyo J, Asher J, Goodrich JA, Barnett G, Patrylak L, Liu J, Redlich CA, Nassar AF. Reaction products of hexamethylene diisocyanate vapors with "self" molecules in the airways of rabbits exposed via tracheostomy. Xenobiotica 2018; 48:488-497. [PMID: 28489470 PMCID: PMC5863241 DOI: 10.1080/00498254.2017.1329569] [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: 04/05/2017] [Revised: 05/08/2017] [Accepted: 05/09/2017] [Indexed: 10/19/2022]
Abstract
1. Hexamethylenediisocyanate (HDI) is a widely used aliphatic diisocyanate and a well-recognized cause of occupational asthma. 2. "Self" molecules (peptides/proteins) in the lower airways, susceptible to chemical reactivity with HDI, have been hypothesized to play a role in asthma pathogenesis and/or chemical metabolism, but remain poorly characterized. 3. This study employed unique approaches to identify and characterize "self" targets of HDI reactivity in the lower airways. Anesthetized rabbits free breathed through a tracheostomy tube connected to chambers containing either, O2, or O2 plus ∼200 ppb HDI vapors. Following 60 minutes of exposure, the airways were lavaged and the fluid was analyzed by LC-MS and LC-MS/MS. 4. The low-molecular weight (<3 kDa) fraction of HDI exposed, but not control rabbit bronchoalveolar lavage (BAL) fluid identified 783.26 and 476.18 m/z [M+H]+ ions with high energy collision-induced dissociation (HCD) fragmentation patterns consistent with bis glutathione (GSH)-HDI and mono(GSH)-HDI. Proteomic analyses of the high molecular weight (>3 kDa) fraction of exposed rabbit BAL fluid identified HDI modification of specific lysines in uteroglobin (aka clara cell protein) and albumin. 5. In summary, this study utilized a unique approach to chemical vapor exposure in rabbits, to identify HDI reaction products with "self" molecules in the lower airways.
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Affiliation(s)
- Adam V Wisnewski
- a Department of Internal Medicine , Yale University School of Medicine , New Haven , CT , USA
| | - Jean Kanyo
- b W.M. Keck Foundation Biotechnology Resource Laboratory, Yale University School of Medicine , New Haven , CT , USA , and
| | - Jennifer Asher
- c Section of Comparative Medicine, Yale University School of Medicine , New Haven , CT , USA
| | - James A Goodrich
- c Section of Comparative Medicine, Yale University School of Medicine , New Haven , CT , USA
| | - Grace Barnett
- c Section of Comparative Medicine, Yale University School of Medicine , New Haven , CT , USA
| | - Lyn Patrylak
- c Section of Comparative Medicine, Yale University School of Medicine , New Haven , CT , USA
| | - Jian Liu
- a Department of Internal Medicine , Yale University School of Medicine , New Haven , CT , USA
| | - Carrie A Redlich
- a Department of Internal Medicine , Yale University School of Medicine , New Haven , CT , USA
| | - Ala F Nassar
- a Department of Internal Medicine , Yale University School of Medicine , New Haven , CT , USA
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Lachén-Montes M, Fernández-Irigoyen J, Santamaría E. Deconstructing the molecular architecture of olfactory areas using proteomics. Proteomics Clin Appl 2016; 10:1178-1190. [PMID: 27226001 DOI: 10.1002/prca.201500147] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 05/02/2016] [Accepted: 05/22/2016] [Indexed: 11/07/2022]
Abstract
The anatomy of the olfactory system is highly complex, comprising a system of olfactory receptors, pathways for the transmission of olfactory information, and structures for the recognition, discrimination, and memorization of odors. During the last years, proteomics has emerged as a large-scale comprehensive approach to characterize and quantify specific olfactory-related proteomes in different biological conditions such as olfactory learning, neurodegeneration, and ageing between others. The current work reviews recent applications of proteomics to olfaction with particular focus on quantitative proteome profiling studies performed on olfactory areas from laboratory animal models as well as proteomic characterizations performed on specific brain structures and fluids involved in human smell. Finally, we will also discuss the potential application of proteomics to study global proteome dynamics and posttranslationally modified proteomes in order to unravel cell-signaling networks that occur from peripheral structures to olfactory cortical areas during odor processing.
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Affiliation(s)
- Mercedes Lachén-Montes
- Clinical Neuroproteomics Group, Navarrabiomed, Instituto de investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Joaquín Fernández-Irigoyen
- Clinical Neuroproteomics Group, Navarrabiomed, Instituto de investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain.,Proteomics Unit, Navarrabiomed, Proteored-ISCIII, Instituto de investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Enrique Santamaría
- Clinical Neuroproteomics Group, Navarrabiomed, Instituto de investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain.,Proteomics Unit, Navarrabiomed, Proteored-ISCIII, Instituto de investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
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