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Maliszewska-Olejniczak K, Pytlak K, Dabrowska A, Zochowska M, Hoser J, Lukasiak A, Zajac M, Kulawiak B, Bednarczyk P. Deficiency of the BK Ca potassium channel displayed significant implications for the physiology of the human bronchial epithelium. Mitochondrion 2024; 76:101880. [PMID: 38604459 DOI: 10.1016/j.mito.2024.101880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/14/2024] [Accepted: 04/07/2024] [Indexed: 04/13/2024]
Abstract
Plasma membrane large-conductance calcium-activated potassium (BKCa) channels are important players in various physiological processes, including those mediated by epithelia. Like other cell types, human bronchial epithelial (HBE) cells also express BKCa in the inner mitochondrial membrane (mitoBKCa). The genetic relationships between these mitochondrial and plasma membrane channels and the precise role of mitoBKCa in epithelium physiology are still unclear. Here, we tested the hypothesis that the mitoBKCa channel is encoded by the same gene as the plasma membrane BKCa channel in HBE cells. We also examined the impact of channel loss on the basic function of HBE cells, which is to create a tight barrier. For this purpose, we used CRISPR/Cas9 technology in 16HBE14o- cells to disrupt the KCNMA1 gene, which encodes the α-subunit responsible for forming the pore of the plasma membrane BKCa channel. Electrophysiological experiments demonstrated that the disruption of the KCNMA1 gene resulted in the loss of BKCa-type channels in the plasma membrane and mitochondria. We have also shown that HBE ΔαBKCa cells exhibited a significant decrease in transepithelial electrical resistance which indicates a loss of tightness of the barrier created by these cells. We have also observed a decrease in mitochondrial respiration, which indicates a significant impairment of these organelles. In conclusion, our findings indicate that a single gene encodes both populations of the channel in HBE cells. Furthermore, this channel is critical for maintaining the proper function of epithelial cells as a cellular barrier.
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Affiliation(s)
- Kamila Maliszewska-Olejniczak
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - Karolina Pytlak
- Laboratory of Intracellular Ion Channels, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Adrianna Dabrowska
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - Monika Zochowska
- Laboratory of Intracellular Ion Channels, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Jakub Hoser
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - Agnieszka Lukasiak
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - Miroslaw Zajac
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - Bogusz Kulawiak
- Laboratory of Intracellular Ion Channels, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.
| | - Piotr Bednarczyk
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland.
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Kumar GD, Banasiewicz M, Wrzosek A, O'Mari O, Zochowska M, Vullev VI, Jacquemin D, Szewczyk A, Gryko DT. A sensitive zinc probe operating via enhancement of excited-state intramolecular charge transfer. Org Biomol Chem 2022; 20:7439-7447. [PMID: 36102673 DOI: 10.1039/d2ob01296k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel highly sensitive fluorescent probes for zinc cations based on the diketopyrrolopyrrole scaffold were designed and synthesized. Large bathochromic shifts (≈80 nm) of fluorescence are observed when the Zn2+-recognition unit (di-(2-picolyl)amine) is bridged with the fluorophore possessing an additional pyridine unit able to participate in the coordination process. This effect originates from the dipolar architecture and the increasing electron-withdrawing properties of the diketopyrrolopyrrole core upon addition of the cation. The new, greenish-yellow emitting probes, which operate via modulation of intramolecular charge transfer, are very sensitive to the presence of Zn2+. Introduction of a morpholine unit in the diketopyrrolopyrrole structure induces a selective six-fold increase of the emission intensity upon zinc coordination. Importantly, the presence of other divalent biologically relevant metal cations has negligible effects and typically even at a 100-fold higher concentration of Mg2+/Zn2+, the effect is comparable. Computational studies rationalize the strong bathochromic shift upon Zn2+-complexation. Decorating the probes with the triphenylphosphonium cation and morpholine unit enables selective localization in the mitochondria and the lysosome of cardiac H9C2 cells, respectively.
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Affiliation(s)
- G Dinesh Kumar
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Marzena Banasiewicz
- Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
| | - Antoni Wrzosek
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Pasteur 3, 02-093 Warsaw, Poland.
| | - Omar O'Mari
- Department of Bioengineering, University of California, Riverside, 900 University Ave., Riverside, CA 92521, USA.
| | - Monika Zochowska
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Pasteur 3, 02-093 Warsaw, Poland.
| | - Valentine I Vullev
- Department of Bioengineering, University of California, Riverside, 900 University Ave., Riverside, CA 92521, USA.
| | - Denis Jacquemin
- Nantes University, CNRS, CEISAM, UMR-6230, F-4400 Nantes, France.
| | - Adam Szewczyk
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Pasteur 3, 02-093 Warsaw, Poland.
| | - Daniel T Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
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Zochowska M, Piguet AC, Jemielity J, Kowalska J, Szolajska E, Dufour JF, Chroboczek J. Virus-like particle-mediated intracellular delivery of mRNA cap analog with in vivo activity against hepatocellular carcinoma. Nanomedicine 2014; 11:67-76. [PMID: 25101883 DOI: 10.1016/j.nano.2014.07.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 06/17/2014] [Accepted: 07/23/2014] [Indexed: 12/21/2022]
Abstract
Adenovirus dodecahedron (Dd), a nanoparticulate proteinaceous biodegradable virus-like particle (VLP), was used as a vector for delivery of an oncogene inhibitor to hepatocellular carcinoma (HCC) rat orthotopic model. Initiation factor eIF4E is an oncogene with elevated expression in human cancers. Cell-impermeant eIF4E inhibitor, cap structure analog (cap) and anti-cancer antibiotic doxorubicin (Dox) were delivered as Dd conjugates. Dd-cap and Dd-dox inhibited cancer cell culture proliferation up to 50 and 84%, respectively, while with free Dox similar results could be obtained only at a 5 times higher concentration. In animal HCC model the combination treatment of Dd-cap/Dd-dox caused 40% inhibition of tumor growth. Importantly, the level of two pro-oncogenes, eIF4E and c-myc, was significantly diminished in tumor sections of treated rats. Attachment to Dd, a virus-like particle, permitted the first demonstration of cap analog intracellular delivery and resulted in improved doxorubicin delivery leading to statistically significant inhibition of HCC tumor growth.
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Affiliation(s)
- Monika Zochowska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Anne-Christine Piguet
- Hepatology, Department of Clinical Research, University of Berne, Berne, Switzerland
| | - Jacek Jemielity
- Division of Biophysics, Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland; Centre of New Technologies, University of Warsaw, Warsaw, Poland
| | - Joanna Kowalska
- Division of Biophysics, Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
| | - Ewa Szolajska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Jean-François Dufour
- University Clinics of Visceral Surgery and Medicine, Inselspital Berne, Berne, Switzerland
| | - Jadwiga Chroboczek
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland; Therex, TIMC-IMAG, CNRS, Université Joseph Fourier, La Tronche, France.
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Szolajska E, Burmeister WP, Zochowska M, Nerlo B, Andreev I, Schoehn G, Andrieu JP, Fender P, Naskalska A, Zubieta C, Cusack S, Chroboczek J. The structural basis for the integrity of adenovirus Ad3 dodecahedron. PLoS One 2012; 7:e46075. [PMID: 23049939 PMCID: PMC3457955 DOI: 10.1371/journal.pone.0046075] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Accepted: 08/27/2012] [Indexed: 11/21/2022] Open
Abstract
During the viral life cycle adenoviruses produce excess capsid proteins. Human adenovirus serotype 3 (Ad3) synthesizes predominantly an excess of free pentons, the complexes of pentameric penton base and trimeric fiber proteins, which are responsible for virus penetration. In infected cells Ad3 pentons spontaneously assemble into dodecahedral virus-like nano-particles containing twelve pentons. They also form in insect cells during expression in the baculovirus system. Similarly, in the absence of fiber protein dodecahedric particles built of 12 penton base pentamers can be produced. Both kinds of dodecahedra show remarkable efficiency of intracellular penetration and can be engineered to deliver several millions of foreign cargo molecules to a single target cell. For this reason, they are of great interest as a delivery vector. In order to successfully manipulate this potential vector for drug and/or gene delivery, an understanding of the molecular basis of vector assembly and integrity is critical. Crystallographic data in conjunction with site-directed mutagenesis and biochemical analysis provide a model for the molecular determinants of dodecamer particle assembly and the requirements for stability. The 3.8 Å crystal structure of Ad3 penton base dodecamer (Dd) shows that the dodecahedric structure is stabilized by strand-swapping between neighboring penton base molecules. Such N-terminal strand-swapping does not occur for Dd of Ad2, a serotype which does not form Dd under physiological conditions. This unique stabilization of the Ad3 dodecamer is controlled by residues 59-61 located at the site of strand switching, the residues involved in putative salt bridges between pentamers and by the disordered N-terminus (residues 1-47), as confirmed by site directed mutagenesis and biochemical analysis of mutant and wild type protein. We also provide evidence that the distal N-terminal residues are externally exposed and available for attaching cargo.
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Affiliation(s)
- Ewa Szolajska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Wim P. Burmeister
- Unit for Virus Host-Cell Interactions, Université Joseph Fourier Grenoble 1/European Molecular Biology Laboratory/Centre National de Recherche Scientifique (UJF Grenoble 1/EMBL/CNRS UMI 3265), Grenoble, France
| | - Monika Zochowska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Barbara Nerlo
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Igor Andreev
- Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kiev, Ukraine
| | - Guy Schoehn
- Unit for Virus Host-Cell Interactions, Université Joseph Fourier Grenoble 1/European Molecular Biology Laboratory/Centre National de Recherche Scientifique (UJF Grenoble 1/EMBL/CNRS UMI 3265), Grenoble, France
- Institut de Biologie Structurale Jean-Pierre Ebel (IBS), Commissariat d'Energie Atomique, Grenoble, France
- IBS, UJF Grenoble 1, Grenoble, France
- IBS UMR 5075, CNRS, Grenoble, France
| | - Jean-Pierre Andrieu
- Institut de Biologie Structurale Jean-Pierre Ebel (IBS), Commissariat d'Energie Atomique, Grenoble, France
- IBS, UJF Grenoble 1, Grenoble, France
- IBS UMR 5075, CNRS, Grenoble, France
| | - Pascal Fender
- Unit for Virus Host-Cell Interactions, Université Joseph Fourier Grenoble 1/European Molecular Biology Laboratory/Centre National de Recherche Scientifique (UJF Grenoble 1/EMBL/CNRS UMI 3265), Grenoble, France
| | - Antonina Naskalska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Chloe Zubieta
- European Synchrotron Radiation Facility, Grenoble, France
- Grenoble Outstation, EMBL, Grenoble, France
| | - Stephen Cusack
- Unit for Virus Host-Cell Interactions, Université Joseph Fourier Grenoble 1/European Molecular Biology Laboratory/Centre National de Recherche Scientifique (UJF Grenoble 1/EMBL/CNRS UMI 3265), Grenoble, France
- Grenoble Outstation, EMBL, Grenoble, France
| | - Jadwiga Chroboczek
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
- Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications de Grenoble, UMR 5525 CNRS/UJF Grenoble 1, La Tronche, France
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Urbas L, Jarc BL, Barut M, Zochowska M, Chroboczek J, Pihlar B, Szolajska E. Purification of recombinant adenovirus type 3 dodecahedric virus-like particles for biomedical applications using short monolithic columns. J Chromatogr A 2011; 1218:2451-9. [DOI: 10.1016/j.chroma.2011.01.032] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Revised: 12/07/2010] [Accepted: 01/13/2011] [Indexed: 02/07/2023]
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Zochowska M. [Possibility of practical application of U-Tube and D-Tube for proteins concentration]. Postepy Biochem 2010; 56:95-97. [PMID: 20499686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
It was considered in practice that the U-Tube Concentrators, 15H-30 according to the manufacturer's statement, show a lower susceptibility to the binding of proteins to the membrane. Therefore, they are effective tools for proteins concentration, especially these proteins that tend to bind to the membrane.
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Affiliation(s)
- Monika Zochowska
- Institute of Biochemistry and Biophysics, PAS, 5a Pawinskiego St., 02-106 Warszawa, Poland.
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Zochowska M, Paca A, Schoehn G, Andrieu JP, Chroboczek J, Dublet B, Szolajska E. Adenovirus dodecahedron, as a drug delivery vector. PLoS One 2009; 4:e5569. [PMID: 19440379 PMCID: PMC2679213 DOI: 10.1371/journal.pone.0005569] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Accepted: 04/20/2009] [Indexed: 11/24/2022] Open
Abstract
Background Bleomycin (BLM) is an anticancer antibiotic used in many cancer regimens. Its utility is limited by systemic toxicity and dose-dependent pneumonitis able to progress to lung fibrosis. The latter can affect up to nearly 50% of the total patient population, out of which 3% will die. We propose to improve BLM delivery by tethering it to an efficient delivery vector. Adenovirus (Ad) dodecahedron base (DB) is a particulate vector composed of 12 copies of a pentameric viral protein responsible for virus penetration. The vector efficiently penetrates the plasma membrane, is liberated in the cytoplasm and has a propensity to concentrate around the nucleus; up to 300000 particles can be observed in one cell in vitro. Principal Findings Dodecahedron (Dd) structure is preserved at up to about 50°C at pH 7–8 and during dialysis, freezing and drying in the speed-vac in the presence of 150 mM ammonium sulfate, as well as during lyophilization in the presence of cryoprotectants. The vector is also stable in human serum for 2 h at 37°C. We prepared a Dd-BLM conjugate which upon penetration induced death of transformed cells. Similarly to free bleomycin, Dd-BLM caused dsDNA breaks. Significantly, effective cytotoxic concentration of BLM delivered with Dd was 100 times lower than that of free bleomycin. Conclusions/Significance Stability studies show that Dds can be conveniently stored and transported, and can potentially be used for therapeutic purposes under various climates. Successful BLM delivery by Ad Dds demonstrates that the use of virus like particle (VLP) results in significantly improved drug bioavailability. These experiments open new vistas for delivery of non-permeant labile drugs.
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Affiliation(s)
- Monika Zochowska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Agnieszka Paca
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Guy Schoehn
- Institut de Virologie Moléculaire et Structurale, FRE 2854 CNRS-UJF, Grenoble, France
| | | | - Jadwiga Chroboczek
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
- Institut de Biologie Structurale JP Ebel, CEA, CNRS, UJF, Grenoble, France
- * E-mail: (JC); (ES)
| | - Bernard Dublet
- Institut de Biologie Structurale JP Ebel, CEA, CNRS, UJF, Grenoble, France
| | - Ewa Szolajska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
- * E-mail: (JC); (ES)
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