1
|
Stawoska I, Wesełucha-Birczyńska A, Golebiowska-Paluch G. Temperature-Caused Changes in Raman Pattern and Protein Profiles of Winter Triticale (x Triticosecale, Wittm.) Field-Grown Seedlings. Molecules 2024; 29:1933. [PMID: 38731424 PMCID: PMC11085197 DOI: 10.3390/molecules29091933] [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: 03/02/2024] [Revised: 04/16/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024] Open
Abstract
Climate change, which causes periods with relatively high temperatures in winter in Poland, can lead to a shortening or interruption of the cold hardening of crops. Previous research indicates that cold acclimation is of key importance in the process of acquiring cereal tolerance to stress factors. The objective of this work was to verify the hypothesis that both natural temperature fluctuations and the plant genotype influence the content of metabolites as well as proteins, including antioxidant enzymes and photosystem proteins. The research material involved four winter triticale genotypes, differing in their tolerance to stress under controlled conditions. The values of chlorophyll a fluorescence parameters and antioxidant activity were measured in their seedlings. Subsequently, the contribution of selected proteins was verified using specific antibodies. In parallel, the profiling of the contents of chlorophylls, carotenoids, phenolic compounds, and proteins was carried out by Raman spectroscopy. The obtained results indicate that a better PSII performance along with a higher photosystem II proteins content and thioredoxin reductase abundance were accompanied by a higher antioxidant activity in the field-grown triticale seedlings. The Raman studies showed that the cold hardening led to a variation in photosynthetic dyes and an increase in the phenolic to carotenoids ratio in all DH lines.
Collapse
Affiliation(s)
- Iwona Stawoska
- Institute of Biology and Earth Sciences, University of the National Education Commission, Krakow, Podchorążych 2, 30-084 Kraków, Poland;
| | | | - Gabriela Golebiowska-Paluch
- Institute of Biology and Earth Sciences, University of the National Education Commission, Krakow, Podchorążych 2, 30-084 Kraków, Poland;
| |
Collapse
|
2
|
Hnath B, Chen J, Reynolds J, Choi E, Wang J, Zhang D, Sha CM, Dokholyan NV. Big versus small: The impact of aggregate size in disease. Protein Sci 2023; 32:e4686. [PMID: 37243896 PMCID: PMC10273386 DOI: 10.1002/pro.4686] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/17/2023] [Accepted: 05/24/2023] [Indexed: 05/29/2023]
Abstract
Protein aggregation results in an array of different size soluble oligomers and larger insoluble fibrils. Insoluble fibrils were originally thought to cause neuronal cell deaths in neurodegenerative diseases due to their prevalence in tissue samples and disease models. Despite recent studies demonstrating the toxicity associated with soluble oligomers, many therapeutic strategies still focus on fibrils or consider all types of aggregates as one group. Oligomers and fibrils require different modeling and therapeutic strategies, targeting the toxic species is crucial for successful study and therapeutic development. Here, we review the role of different-size aggregates in disease, and how factors contributing to aggregation (mutations, metals, post-translational modifications, and lipid interactions) may promote oligomers opposed to fibrils. We review two different computational modeling strategies (molecular dynamics and kinetic modeling) and how they are used to model both oligomers and fibrils. Finally, we outline the current therapeutic strategies targeting aggregating proteins and their strengths and weaknesses for targeting oligomers versus fibrils. Altogether, we aim to highlight the importance of distinguishing the difference between oligomers and fibrils and determining which species is toxic when modeling and creating therapeutics for protein aggregation in disease.
Collapse
Affiliation(s)
- Brianna Hnath
- Department of Biomedical EngineeringPenn State UniversityUniversity ParkPennsylvaniaUSA
- Department of PharmacologyPenn State College of MedicineHersheyPennsylvaniaUSA
| | - Jiaxing Chen
- Department of PharmacologyPenn State College of MedicineHersheyPennsylvaniaUSA
| | - Joshua Reynolds
- Department of Biomedical EngineeringPenn State UniversityUniversity ParkPennsylvaniaUSA
- Department of PharmacologyPenn State College of MedicineHersheyPennsylvaniaUSA
| | - Esther Choi
- Department of PharmacologyPenn State College of MedicineHersheyPennsylvaniaUSA
- Medical Scientist Training ProgramPenn State College of MedicineHersheyPennsylvaniaUSA
| | - Jian Wang
- Department of PharmacologyPenn State College of MedicineHersheyPennsylvaniaUSA
| | - Dongyan Zhang
- Department of PharmacologyPenn State College of MedicineHersheyPennsylvaniaUSA
| | - Congzhou M. Sha
- Department of PharmacologyPenn State College of MedicineHersheyPennsylvaniaUSA
- Medical Scientist Training ProgramPenn State College of MedicineHersheyPennsylvaniaUSA
- Department of Engineering Science and MechanicsPenn State UniversityUniversity ParkPennsylvaniaUSA
| | - Nikolay V. Dokholyan
- Department of Biomedical EngineeringPenn State UniversityUniversity ParkPennsylvaniaUSA
- Department of PharmacologyPenn State College of MedicineHersheyPennsylvaniaUSA
- Department of Engineering Science and MechanicsPenn State UniversityUniversity ParkPennsylvaniaUSA
- Department of Biochemistry & Molecular BiologyPenn State College of MedicineHersheyPennsylvaniaUSA
- Department of ChemistryPenn State UniversityUniversity ParkPennsylvaniaUSA
| |
Collapse
|
3
|
Stawoska I, Myszkowska D, Oliwa J, Skoczowski A, Wesełucha-Birczyńska A, Saja-Garbarz D, Ziemianin M. Air pollution in the places of Betula pendula growth and development changes the physicochemical properties and the main allergen content of its pollen. PLoS One 2023; 18:e0279826. [PMID: 36696393 PMCID: PMC9876359 DOI: 10.1371/journal.pone.0279826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 12/14/2022] [Indexed: 01/26/2023] Open
Abstract
Pollen allergy becomes an increasing problem for humans, especially in the regions, where the air pollution level increases due to the traffic and urbanization. These factors may also affect the physiological activity of plants, causing changes in pollen allergenicity. The aim of the study was to estimate the influence of air pollutants on the chemical composition of birch pollen and the secondary structures of the Bet v1 protein. The research was conducted in seven locations in Malopolska region, South of Poland of a different pollution level. We have found slight fluctuations in the values of parameters describing the photosynthetic light reactions, similar spectra of leaf reflectance and the negligible differences in the discrimination values of the δ13C carbon isotope were found. The obtained results show a minor effect of a degree of pollution on the physiological condition B. pendula specimen. On the other hand, mean Bet v1 concentration measured in pollen samples collected in Kraków was significantly higher than in less polluted places (p = .03886), while FT-Raman spectra showed the most distinct variations in the wavenumbers characteristic of proteins. Pollen collected at sites of the increased NOx and PM concentration, show the highest percentage values of potential aggregated forms and antiparallel β-sheets in the expense of α-helix, presenting a substantial impact on chemical compounds of pollen, Bet v1 concentration and on formation of the secondary structure of proteins, what can influence their functions.
Collapse
Affiliation(s)
- Iwona Stawoska
- Institute of Biology, Pedagogical University of Krakow, Kraków, Poland
| | - Dorota Myszkowska
- Department of Clinical and Environmental Allergology, Jagiellonian University Medical College, Kraków, Poland
| | - Jakub Oliwa
- Institute of Biology, Pedagogical University of Krakow, Kraków, Poland
| | | | | | - Diana Saja-Garbarz
- The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Kraków, Poland
| | - Monika Ziemianin
- Department of Clinical and Environmental Allergology, Jagiellonian University Medical College, Kraków, Poland
- * E-mail:
| |
Collapse
|
4
|
Does Nitrogen Fertilization Affect the Secondary Structures of Gliadin Proteins in Hypoallergenic Wheat? MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27175684. [PMID: 36080452 PMCID: PMC9457604 DOI: 10.3390/molecules27175684] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/30/2022] [Accepted: 08/31/2022] [Indexed: 11/17/2022]
Abstract
One of the macronutrients indispensable for plant growth and development is nitrogen (N). It is responsible for starch and storage protein (gliadins and glutenins) biosynthesis and, in consequence, influences kernels’ quality and yields. However, applying N-fertilizers increases gluten content in wheat, and it may intensify the risk of developing allergy symptoms in gluten-sensitive individuals. The purpose of our research was to analyse whether and how the elimination of N-fertilizers during the cultivation of wasko.gl− wheat (modified genotype lacking ω-gliadins) changes the secondary structures of gliadin proteins. To this aim, using the FT-Raman technique, we examined flour and gliadin protein extracts obtained from kernels of two winter wheat lines: wasko.gl+ (with a full set of gliadin proteins) and wasko.gl− (without ω-gliadin fraction) cultivated on two different N-fertilization levels—0 and 120 kg N·ha−1. On the basis of the obtained results, we proved that nitrogen fertilization does not have a major impact on the stability of the secondary structures of gliadin proteins for wasko.gl− wheat line with reduced allergenic properties. Furthermore, the results presented herein suggest the possibility of increasing the stability of glutenin structures as a result of the N-fertilization of wasko.gl− wheat line, which gives hope for its use in the production of wheat articles devoted to people suffering from diseases related to gluten sensitivity.
Collapse
|
5
|
Go X X Biowska G, Stawoska I, Wese X Ucha-Birczy X Ska A. Cold-modulated leaf compounds in winter triticale DH lines tolerant to freezing and Microdochium nivale infection: LC-MS and Raman study. FUNCTIONAL PLANT BIOLOGY : FPB 2022; 49:725-741. [PMID: 35379383 DOI: 10.1071/fp21300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 03/12/2022] [Indexed: 06/14/2023]
Abstract
Tolerance to freezing and seedling diseases caused by Microdochium spp. is an essential trait for the wintering of triticale (×Triticosecale Wittmack) and other cereals. Preceding multi-year studies indicate that after long-term exposure to the low temperature, cereal seedlings acquire a genotype-dependent cross-tolerance to other subsequent stresses. This paper presents the first non-gel protein profiling performed via high performance liquid chromatography coupled with Mass Spectrometry as well as Fourier Transform-Raman spectroscopy measurements performed directly on leaves of triticale seedlings growing under different conditions. The research used doubled haploid lines selected from the mapping population, with extreme tolerance/susceptibility to freezing and M. nivale infection. These non-targeted methods led to the detection of twenty two proteins cold-accumulated in the most tolerant seedlings in relation to susceptible ones, classified as involved in protein biosynthesis, response to different stimuli, energy balancing, oxidative stress response, protein modification, membrane structure and anthocyanin synthesis. Additionally, in seedlings of the most freezing- and M. nivale -tolerant line, cold-hardening caused decrease of the carotenoid and chlorophyll content. Moreover, a decrease in the band intensity typical for carbohydrates as well as an increase in the band intensity characteristic for protein compounds were detected. Both studied lines revealed a different answer to stress in the characteristics of phenolic components.
Collapse
Affiliation(s)
- Gabriela Go X X Biowska
- Pedagogical University of Krakow, Institute of Biology, Podchorazych 2, Kraków 30-084, Poland
| | - Iwona Stawoska
- Pedagogical University of Krakow, Institute of Biology, Podchorazych 2, Kraków 30-084, Poland
| | | |
Collapse
|
6
|
FT-Raman Spectroscopy as a Tool to Study the Secondary Structures of Wheat Gliadin Proteins. Molecules 2021; 26:molecules26175388. [PMID: 34500820 PMCID: PMC8434250 DOI: 10.3390/molecules26175388] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/31/2021] [Accepted: 09/02/2021] [Indexed: 11/29/2022] Open
Abstract
Raman spectroscopy is a useful method in biological, biomedical, food, and agricultural studies, allowing the simultaneous examination of various chemical compounds and evaluation of molecular changes occurring in tested objects. The purpose of our research was to explain how the elimination of ω-fractions from the wheat gliadin complex influences the secondary structures of the remaining αβγ-gliadins. To this aim, we analyzed the endosperm of wheat kernels as well as gliadin proteins extracted from two winter wheat genotypes: wasko.gl+ (control genotype containing the full set of gliadins) and wasko.gl− (modified genotype lacking all ω-gliadins). Based on the decomposition of the amide I band, we observed a moderate increase in β-forms (sheets and turns) at the expense of α-helical and random coil structures for gliadins isolated from the flour of the wasko.gl− line. Since ω-gliadins contain no cysteine residues, they do not participate in the formation of the disulfide bridges that stabilize the protein structure. However, they can interact with other proteins via weak, low-energetic hydrogen bonds. We conclude that the elimination of ω-fractions from the gliadin complex causes minor modifications in secondary structures of the remaining gliadin proteins. In our opinion, these small, structural changes of proteins may lead to alterations in gliadin allergenicity.
Collapse
|
7
|
Mo X, Chen Z, Chu B, Liu D, Liang Y, Liang F. Structure and anticancer activities of four Cu(ii) complexes bearing tropolone. Metallomics 2019; 11:1952-1964. [DOI: 10.1039/c9mt00165d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The title Cu(ii) complexes of tropolone induce the apoptosis of MGC80-3 through a caspase-dependent mitochondrion pathway and can also induce autophagy.
Collapse
Affiliation(s)
- Xiyu Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- P. R. China
| | - Zilu Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- P. R. China
| | - Bo Chu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- P. R. China
| | - Dongcheng Liu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- P. R. China
| | - Yuning Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- P. R. China
| | - Fupei Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- P. R. China
| |
Collapse
|
8
|
|
9
|
Wesełucha-Birczyńska A, Morajka K, Stodolak-Zych E, Długoń E, Dużyja M, Lis T, Gubernat M, Ziąbka M, Błażewicz M. Raman studies of the interactions of fibrous carbon nanomaterials with albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 196:262-267. [PMID: 29455077 DOI: 10.1016/j.saa.2018.02.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 01/26/2018] [Accepted: 02/07/2018] [Indexed: 06/08/2023]
Abstract
Adsorption or immobilization of proteins on synthetic surfaces is a key issue in the context of the biocompatibility of implant materials, especially those intended for the needs of cardiac surgery but also for the construction of biosensors or nanomaterials used as drug carriers. The subject of research was the analysis of Raman spectra of two types of fibrous carbon nanomaterials, of great potential for biomedical applications, incubated with human serum albumin (HSA). The first nanomaterial has been created on the layer of MWCNTs deposited by electrophoretic method (EPD) and then covered by thin film of pyrolytic carbon introduced by chemical vapor deposition process (CVD). The second material was formed from carbonized nanofibers prepared via electrospinning (ESCNFs) of polyacrylonitrile (PAN) precursor and then covered with pyrolytic carbon (CVD). The G-band blue-shift towards the position of about 1600cm-1, observed for both studied surfaces, clearly indicates the albumin (HSA) adhesion to the surface. The G and G' (2D) peak shift was employed to assess the stress build up on the carbon nanomaterials. The surface nano- and micro-topography as well as the method of ordering the carbon nanomaterial has a significant influence on the mode of surface-protein interaction.
Collapse
Affiliation(s)
| | - Krzysztof Morajka
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
| | - Ewa Stodolak-Zych
- Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland
| | - Elżbieta Długoń
- Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland
| | - Maria Dużyja
- Technolutions, Jana Pawła II 52/56, 99-400 Łowicz, Poland
| | - Tomasz Lis
- Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland
| | - Maciej Gubernat
- Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland
| | - Magdalena Ziąbka
- Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland
| | - Marta Błażewicz
- Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland
| |
Collapse
|
10
|
Sacharz J, Wesełucha-Birczyńska A, Zięba-Palus J, Lewandowski MH, Kowalski R, Palus K, Chrobok Ł, Moskal P, Birczyńska M, Sozańska A. Epileptic rat brain tissue analyzed by 2D correlation Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 188:581-588. [PMID: 28772144 DOI: 10.1016/j.saa.2017.07.046] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/07/2017] [Accepted: 07/24/2017] [Indexed: 06/07/2023]
Abstract
Absence epilepsy is the neurological disorder characterized by the pathological spike-and wave discharges present in the electroencephalogram, accompanying a sudden loss of consciousness. Experiments were performed on brain slices obtained from young male WAG/Rij rats (2-3weeks old), so that they were sampled before the appearance of brain-damaging seizures symptoms. Two differing brain areas of the rats' brain tissue were studied: the somatosensory cortex (Sc) and the dorsal lateral geniculate nucleus of the thalamus (DLG). The Raman spectra of the fresh brain scraps, kept during measurements in artificial cerebrospinal fluid, were collected using as an excitation source 442nm, 514.5nm, 785nm and 1064nm laser line. The average spectra were analyzed by 2D correlation method regarding laser line as an external perturbation. In 2D synchronous spectra positive auto-peaks corresponding to the CC stretching and amide I band vibrations show maxima at 1660cm-1 and 1662cm-1 for Sc and DLG, respectively. The prominent auto-peak at 2937cm-1, originated from the CH3 mode in DLG brain area, seems to indicate the importance of methylation, considered to be significant in epileptogenesis. Synchronous and asynchronous correlations peaks, glutamic acid and gamma-aminobutyric acid (GABA), appear in Sc and DLG, respectively. In the 1730-1600cm-1 range occur cross-peaks which appearance might be triggered by glial fibrillary acidic protein (GFAP) activation.
Collapse
Affiliation(s)
- Julia Sacharz
- Faculty of Chemistry, Jagiellonian University, Kraków, Poland
| | | | | | - Marian H Lewandowski
- Department of Neurophysiology and Chronobiology, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | | | - Katarzyna Palus
- Department of Neurophysiology and Chronobiology, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | - Łukasz Chrobok
- Department of Neurophysiology and Chronobiology, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | - Paulina Moskal
- Faculty of Chemistry, Jagiellonian University, Kraków, Poland
| | - Malwina Birczyńska
- The Department of Infectious Diseases, The University Hospital, Kraków, Poland
| | | |
Collapse
|
11
|
Stawoska I, Tejchman W, Mazuryk O, Lyčka A, Nowak-Sliwinska P, Żesławska E, Nitek W, Kania A. Spectral Characteristic and Preliminary Anticancer Activity in vitro
of Selected Rhodanine-3-carboxylic Acids Derivatives. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2897] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Iwona Stawoska
- Institute of Biology; Pedagogical University of Cracow; Podchorążych 2 30-084 Kraków Poland
| | - Waldemar Tejchman
- Institute of Biology; Pedagogical University of Cracow; Podchorążych 2 30-084 Kraków Poland
| | - Olga Mazuryk
- Faculty of Chemistry; Jagiellonian University; Ingardena 3 30-060 Kraków Poland
| | - Antonín Lyčka
- Faculty of Science; University of Hradec Králové; Rokitanského 62 Hradec Králové 3 Czech Republic
| | | | - Ewa Żesławska
- Institute of Biology; Pedagogical University of Cracow; Podchorążych 2 30-084 Kraków Poland
| | - Wojciech Nitek
- Faculty of Chemistry; Jagiellonian University; Ingardena 3 30-060 Kraków Poland
| | - Agnieszka Kania
- Institute of Biology; Pedagogical University of Cracow; Podchorążych 2 30-084 Kraków Poland
| |
Collapse
|
12
|
Sacharz J, Wesełucha-Birczyńska A, Paluszkiewicz C, Chaniecki P, Błażewicz M. A 2D correlation Raman spectroscopy analysis of a human cataractous lens. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.04.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
13
|
Breydo L, Redington JM, Uversky VN. Effects of Intrinsic and Extrinsic Factors on Aggregation of Physiologically Important Intrinsically Disordered Proteins. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2016; 329:145-185. [PMID: 28109327 DOI: 10.1016/bs.ircmb.2016.08.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Misfolding and aggregation of proteins and peptides play an important role in a number of diseases as well as in many physiological processes. Many of the proteins that misfold and aggregate in vivo are intrinsically disordered. Protein aggregation is a complex multistep process, and aggregates can significantly differ in morphology, structure, stability, cytotoxicity, and self-propagation ability. The aggregation process is influenced by both intrinsic (e.g., mutations and expression levels) and extrinsic (e.g., polypeptide chain truncation, macromolecular crowding, posttranslational modifications, as well as interaction with metal ions, other small molecules, lipid membranes, and chaperons) factors. This review examines the effect of a variety of these factors on aggregation of physiologically important intrinsically disordered proteins.
Collapse
Affiliation(s)
- L Breydo
- Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, United States.
| | - J M Redington
- Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - V N Uversky
- Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, United States; Laboratory of Structural Dynamics, Stability and Folding of Proteins, Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia.
| |
Collapse
|
14
|
Kozicki M, Czepiel J, Biesiada G, Nowak P, Garlicki A, Wesełucha-Birczyńska A. The ring-stage of Plasmodium falciparum observed in RBCs of hospitalized malaria patients. Analyst 2015; 140:8007-16. [PMID: 26524434 DOI: 10.1039/c5an01598g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Raman spectra of the blood samples obtained directly from hospitalized malaria patients with Plasmodium falciparum (P. falciparum) in the ring-stage were analyzed. Changes observed in the Raman band intensities of the infected patients compared to healthy volunteers are the result of parasite activity inside red blood cells. The obtained spectra were discussed by analyzing differences in particular spectral regions by evaluating changes in the band intensity ratios as well as using PCA analysis. The alterations of erythrocyte membranes caused by parasite penetration are visible by a reduced I1130/I1075 intensity ratio expressing the lowering of the amount of domains arranged in trans conformation. The I2930/I2850 ratio, which is a measure of modifications in structures of membrane proteins and lipids, in infected red blood cells increases, which is caused by malaria protein export to the erythrocyte membrane and expresses the membrane disarrangement. In the pyrrole ring vibration region, the ν4 band marker of the oxygenated-Hb shows at 1371 cm(-1) whereas the ν4 band at 1353 cm(-1) related to the deoxygenated-Hb is observed for malaria patients and is characterized by a higher intensity in infected erythrocytes. The amide I analysis shows the modifications in the secondary structure composition in the infected RBCs. We found that the P. falciparum infection leads to a decrease in the α-helical content and a concurrent increase in undefined (random-coil) structures. It was observed that the Raman spectra changes are also the result of the hemozoin formation process. In the pyrrole ring stretching vibration region, the increase of 1220 cm(-1) (deoxyHb) as against 1248 cm(-1) (oxyHb) may be considered as a signal of hemozoin formation in the RBCs. Relatively intense band patterns at 1560 cm(-1) and also at 1570 cm(-1) and 1552 cm(-1) may be due to the hemozoin that is formed according to parasite activity. The results of medical diagnostic tests had not presented changes in patient RBC parameters. A significant reduction in WBC count was noticed along with a decrease in neutrophil and platelet count when compared with the control group. Although no change is observed in the overall picture of the erythrocytes, pathological changes are evident in the Raman spectrum.
Collapse
Affiliation(s)
- Mateusz Kozicki
- Faculty of Chemistry, Jagiellonian University, Kraków, Poland.
| | | | | | | | | | | |
Collapse
|
15
|
Wang JZ, Ren SY, Zhu GF, Xi L, Han YG, Luo Y, Du LF. Hg2+ interference with the structure of tobacco etch virus protease (TEVp) and its implications for biological engineering. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.08.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
16
|
Chen Y, Li F, Yu G, Wei J. Eu-doped Mg-Al layered double hydroxide as a responsive fluorescent material and its interaction with glutamic acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 96:1005-1011. [PMID: 22954809 DOI: 10.1016/j.saa.2012.08.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2012] [Revised: 07/28/2012] [Accepted: 08/07/2012] [Indexed: 06/01/2023]
Abstract
The paper describes a study on the fluorescence of a Eu-doped Mg-Al layered double hydroxide (Eu-doped LDH) response to glutamic acid (Glu). Various characterizations (UV-Vis transmittance, TG-DTA and IR-spectrum) indicated that there is an interaction between the Eu-doped LDH and Glu. Fluorescent study was found that the red emissions resulted from (5)D(0)-(7)F(J) transition (J=1, 2) of Eu(3+) markedly decreased, while the blue emission at 440 nm contributed to Glu shifted to low energy after the addition of Glu to the Eu-doped LDH. The fluorescent changes may be relevant to the hydrogen-bond interaction between the Eu-doped LDH and Glu, and the mechanism of the interaction between Eu-doped LDH and Glu was discussed.
Collapse
Affiliation(s)
- Yufeng Chen
- Department of Chemistry, Nanchang University, Nanchang 330031, China.
| | | | | | | |
Collapse
|
17
|
Breydo L, Uversky VN. Role of metal ions in aggregation of intrinsically disordered proteins in neurodegenerative diseases. Metallomics 2011; 3:1163-80. [PMID: 21869995 DOI: 10.1039/c1mt00106j] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Neurodegenerative diseases constitute a set of pathological conditions originating from the slow, irreversible, and systematic cell loss within the various regions of the brain and/or the spinal cord. Depending on the affected region, the outcomes of the neurodegeneration are very broad and diverse, ranging from the problems with movements to dementia. Some neurodegenerative diseases are associated with protein misfolding and aggregation. Many proteins that misfold in human neurodegenerative diseases are intrinsically disordered; i.e., they lack a stable tertiary and/or secondary structure under physiological conditions in vitro. These intrinsically disordered proteins (IDPs) functionally complement ordered proteins, being typically involved in regulation and signaling. There is accumulating evidence that altered metal homeostasis may be related to the progression of neurodegenerative diseases. This review examines the effects of metal ion binding on the aggregation pathways of IDPs found in neurodegenerative diseases.
Collapse
Affiliation(s)
- Leonid Breydo
- Department of Molecular Medicine, College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd, MDC07, Tampa, Florida 33612, USA.
| | | |
Collapse
|
18
|
Mazzucchelli S, De Palma A, Riva M, D'Urzo A, Pozzi C, Pastori V, Comelli F, Fusi P, Vanoni M, Tortora P, Mauri P, Regonesi ME. Proteomic and biochemical analyses unveil tight interaction of ataxin-3 with tubulin. Int J Biochem Cell Biol 2009; 41:2485-92. [PMID: 19666135 DOI: 10.1016/j.biocel.2009.08.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2009] [Revised: 07/29/2009] [Accepted: 08/01/2009] [Indexed: 10/20/2022]
Abstract
Ataxin-3 consists of an N-terminal globular Josephin domain and an unstructured C-terminal region containing a stretch of consecutive glutamines that triggers an inherited neurodegenerative disorder, spinocerebellar ataxia type 3, when its length exceeds a critical threshold. The pathology results from protein misfolding and intracellular accumulation of fibrillar amyloid-like aggregates. Plenty of work has been carried out to elucidate the protein's physiological role(s), which has shown that ataxin-3 is multifunctional; it acts as a transcriptional repressor, and also has polyubiquitin-binding/ubiquitin-hydrolase activity. In addition, a recent report shows that it participates in sorting misfolded protein to aggresomes, close to the microtubule-organizing center. Since a thorough understanding of the protein's physiological role(s) requires the identification of all the molecular partners interacting with ataxin-3, we pursued this goal by taking advantage of two-dimensional chromatography coupled to tandem mass spectrometry. We found that different ataxin-3 constructs, including the sole Josephin domain, bound alpha- and beta-tubulin from soluble rat brain extracts. Coimmunoprecipitation experiments confirmed this interaction. Also, normal ataxin-3 overexpressed in COS7 cultured cells partially colocalized with microtubules, whereas an expanded variant only occasionally did so, probably due to aggregation. Furthermore, by surface plasmon resonance we determined a dissociation constant of 50-70nM between ataxin-3 and tubulin dimer, which strongly supports the hypothesis of a direct interaction of this protein with microtubules in vivo. These findings suggest an involvement of ataxin-3 in directing aggregated protein to aggresomes, and shed light on the mode of interaction among the different molecular partners participating in the process.
Collapse
Affiliation(s)
- Serena Mazzucchelli
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza 2, I-20126 Milano, Italy
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|