1
|
Folz J, Wasserman JH, Jo J, Wang X, Kopelman R. Photoacoustic Chemical Imaging Sodium Nano-Sensor Utilizing a Solvatochromic Dye Transducer for In Vivo Application. BIOSENSORS 2023; 13:923. [PMID: 37887116 PMCID: PMC10605089 DOI: 10.3390/bios13100923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/02/2023] [Accepted: 10/09/2023] [Indexed: 10/28/2023]
Abstract
Sodium has many vital and diverse roles in the human body, including maintaining the cellular pH, generating action potential, and regulating osmotic pressure. In cancer, sodium dysregulation has been correlated with tumor growth, metastasis, and immune cell inhibition. However, most in vivo sodium measurements are performed via Na23 NMR, which is handicapped by slow acquisition times, a low spatial resolution (in mm), and low signal-to-noise ratios. We present here a plasticizer-free, ionophore-based sodium-sensing nanoparticle that utilizes a solvatochromic dye transducer to circumvent the pH cross-sensitivity of most previously reported sodium nano-sensors. We demonstrate that this nano-sensor is non-toxic, boasts a 200 μM detection limit, and is over 1000 times more selective for sodium than potassium. Further, the in vitro photoacoustic calibration curve presented demonstrates the potential of this nano-sensor for performing the in vivo chemical imaging of sodium over the entire physiologically relevant concentration range.
Collapse
Affiliation(s)
- Jeff Folz
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA;
| | | | - Janggun Jo
- Department of Radiology, University of Michigan, Ann Arbor, MI 48109, USA; (J.J.); (X.W.)
| | - Xueding Wang
- Department of Radiology, University of Michigan, Ann Arbor, MI 48109, USA; (J.J.); (X.W.)
| | - Raoul Kopelman
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA;
| |
Collapse
|
2
|
Li T, Jing W, Fu W, Yan Z, Ma Y, Li X, Ji H, Zhang R. Melanin theranostic nanoplatform as an efficient drug delivery system for imaging-guided renal fibrosis therapy. BIOMATERIALS ADVANCES 2023; 147:213333. [PMID: 36801511 DOI: 10.1016/j.bioadv.2023.213333] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 02/02/2023] [Accepted: 02/07/2023] [Indexed: 02/12/2023]
Abstract
As renal fibrosis nanotherapeutics, the endogenous biomaterial melanin not only has natural biocompatibility and biodegradability but also has inherent photoacoustic imaging ability and certain anti-inflammatory effects. These properties determine that melanin can not only as a carrier of medication but also track the biodistribution and renal uptake of drugs in vivo by photoacoustic imaging in real-time. Curcumin is a natural compound with biological activity, which has excellent ROS scavenging ability and good anti-inflammatory property. These materials appear more advantages in the development of nanoscale diagnostic and therapeutic platforms for future clinical translation. Herein, this study developed curcumin-loaded melanin nanoparticles (MNP-PEG-CUR NPs) as an efficient medication delivery system for photoacoustic imaging guidance renal fibrosis treatment. The nanoparticles are about 10 nm in size, exhibit good renal clearance efficiency, excellent photoacoustic imaging ability, and good in vitro and in vivo biocompatibility. These preliminary results indicated that MNP-PEG-CUR have clinically applicable potential as a therapeutic nanoplatform for renal fibrosis.
Collapse
Affiliation(s)
- Tingting Li
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, People's Republic of China; School of Pharmacy, Shanxi Medical University, Taiyuan 030001, People's Republic of China
| | - Wenyu Jing
- School of Pharmacy, Shanxi Medical University, Taiyuan 030001, People's Republic of China
| | - Weihua Fu
- School of Pharmacy, Shanxi Medical University, Taiyuan 030001, People's Republic of China
| | - Zirui Yan
- School of Pharmacy, Shanxi Medical University, Taiyuan 030001, People's Republic of China
| | - Yuan Ma
- School of Pharmacy, Shanxi Medical University, Taiyuan 030001, People's Republic of China
| | - Xueqi Li
- School of Pharmacy, Shanxi Medical University, Taiyuan 030001, People's Republic of China
| | - Huifang Ji
- School of Pharmacy, Shanxi Medical University, Taiyuan 030001, People's Republic of China
| | - Ruiping Zhang
- Department of Radiology, First Hospital of Shanxi Medical University, Taiyuan 030001, People's Republic of China.
| |
Collapse
|
3
|
Kaurav M, Ruhi S, Al-Goshae HA, Jeppu AK, Ramachandran D, Sahu RK, Sarkar AK, Khan J, Ashif Ikbal AM. Dendrimer: An update on recent developments and future opportunities for the brain tumors diagnosis and treatment. Front Pharmacol 2023; 14:1159131. [PMID: 37006997 PMCID: PMC10060650 DOI: 10.3389/fphar.2023.1159131] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 02/27/2023] [Indexed: 03/18/2023] Open
Abstract
A brain tumor is an uncontrolled cell proliferation, a mass of tissue composed of cells that grow and divide abnormally and appear to be uncontrollable by the processes that normally control normal cells. Approximately 25,690 primary malignant brain tumors are discovered each year, 70% of which originate in glial cells. It has been observed that the blood-brain barrier (BBB) limits the distribution of drugs into the tumour environment, which complicates the oncological therapy of malignant brain tumours. Numerous studies have found that nanocarriers have demonstrated significant therapeutic efficacy in brain diseases. This review, based on a non-systematic search of the existing literature, provides an update on the existing knowledge of the types of dendrimers, synthesis methods, and mechanisms of action in relation to brain tumours. It also discusses the use of dendrimers in the diagnosis and treatment of brain tumours and the future possibilities of dendrimers. Dendrimers are of particular interest in the diagnosis and treatment of brain tumours because they can transport biochemical agents across the BBB to the tumour and into the brain after systemic administration. Dendrimers are being used to develop novel therapeutics such as prolonged release of drugs, immunotherapy, and antineoplastic effects. The use of PAMAM, PPI, PLL and surface engineered dendrimers has proven revolutionary in the effective diagnosis and treatment of brain tumours.
Collapse
Affiliation(s)
- Monika Kaurav
- Department of Pharmaceutics, KIET Group of Institutions (KIET School of Pharmacy), Delhi NCR, Ghaziabad, India
- Dr. A.P.J. Abdul Kalam Technical University, Lucknow, Uttar Pradesh, India
| | - Sakina Ruhi
- Department of Biochemistry, IMS, Management and Science University, University Drive, Shah Alam, Selangor, Malaysia
| | - Husni Ahmed Al-Goshae
- Department of Anantomy, IMS, Management and Science University, University Drive, Shah Alam, Selangor, Malaysia
| | - Ashok Kumar Jeppu
- Department of Biochemistry, IMS, Management and Science University, University Drive, Shah Alam, Selangor, Malaysia
| | - Dhani Ramachandran
- Department of Pathology, IMS, Management and Science University, University Drive, Shah Alam, Selangor, Malaysia
| | - Ram Kumar Sahu
- Department of Pharmaceutical Sciences, Hemvati Nandan Bahuguna Garhwal University (A Central University), Chauras Campus, Tehri Garhwal, Uttarakhand, India
- *Correspondence: Ram Kumar Sahu,
| | | | - Jiyauddin Khan
- School of Pharmacy, Management and Science University, Shah Alam, Selangor, Malaysia
| | - Abu Md Ashif Ikbal
- Department of Pharmaceutical Sciences, Assam University (A Central University), Silchar, Assam, India
| |
Collapse
|
4
|
Sheveleva NN, Dolgushev M, Lähderanta E, Markelov DA. Mechanical relaxation of functionalized carbosilane dendrimer melts. Phys Chem Chem Phys 2022; 24:13049-13056. [PMID: 35583592 DOI: 10.1039/d2cp00805j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Functionalizing the internal structure of classical dendrimers is a new way of tailoring their properties. Using atomistic molecular dynamics simulations, we investigate the rheological behavior of functionalized dendrimer (FD) melts obtained by modifying the branching of carbosilane dendrimers (CSD). The time (relaxation modulus G(t)) and frequency (storage G' and loss G'' moduli) dependencies of the dynamic modulus are obtained. Fourth generation FD melts present a region where G' > G''. In contrast, their non-functionalized counterparts (i.e., classical dendrimers with regular branching) do not show such a region. The comparative analysis of FD and CSD suggests that the internal densification due to functionalization prevents the penetration of branches and causes FD to behave like colloidal particles in a crowded environment. Since CSD have no special interactions, we expect that this effect will be common for other dendrimer macromolecules.
Collapse
Affiliation(s)
- Nadezhda N Sheveleva
- St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia. .,Department of Physics, LUT University, Box 20, 53851 Lappeenranta, Finland
| | - Maxim Dolgushev
- Sorbonne Université, CNRS, Laboratoire de Physique Théorique de la Matière Condensée, LPTMC, 4 place Jussieu, 75005 Paris, France.
| | - Erkki Lähderanta
- Department of Physics, LUT University, Box 20, 53851 Lappeenranta, Finland
| | - Denis A Markelov
- St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia.
| |
Collapse
|
5
|
Dąbkowska M, Ulańczyk Z, Łuczkowska K, Rogińska D, Sobuś A, Wasilewska M, Olszewska M, Jakubowska K, Machaliński B. The role of the electrokinetic charge of neurotrophis-based nanocarriers: protein distribution, toxicity, and oxidative stress in in vitro setting. J Nanobiotechnology 2021; 19:258. [PMID: 34454520 PMCID: PMC8399784 DOI: 10.1186/s12951-021-00984-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 08/05/2021] [Indexed: 12/29/2022] Open
Abstract
Background The rational chemical design of nanoparticles can be readily controlled and optimized by quantitatively studying protein adsorption at variously charged polymer carriers, determining their fate in biological fluids. We manufactured brain-derived neurotrophic factor (BDNF) -based electrostatic nanocomplexes with a different type of dendrimer core (anionic or cationic), encapsulated or not in polyethylene glycol (PEG), and studied their physicochemical properties and behavior in a biological setting. We investigated whether the electrokinetic charge of dendrimer core influences BDNF loading and desorption from the nanoparticle and serves as a determinant of nanoparticles’ behavior in in vitro setting, influencing mitochondrial dysfunction, lipid peroxidation, and general nanoparticles’ cellular toxicity. Results We found that the electrokinetic charge of the dendrimer core influences nanoparticles in terms of BDNF release profile from their surfaces and their effect on cell viability, mitochondrial membrane potential, cell phenotype, and induction of oxidative stress. The electrostatic interaction of positively charged core of nanoparticles with cell membranes increases their cytotoxicity, as well as serious phenotype alterations compared to negatively charged nanoparticles core in neuron-like differentiated human neuroblastoma cells. Moreover, PEG adsorption at nanoparticles with negatively charged core presents a distinct decrease in metabolic cell activity. On the contrary, charge neutralization due to PEG adsorption on the surface of nanoparticles with positively charged core does not reduce their cytotoxicity, makes them less biocompatible with differentiated cells, and presumably shows non-specific toxicity. Conclusions The surface charge transformation after adsorption of protein or polyelectrolyte during nanocarriers formulation has an important role not only in designing nanomaterials with potent neuroprotective and neuroregenerative properties but also in applying them in a cellular environment. Graphic abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-021-00984-4.
Collapse
Affiliation(s)
- Maria Dąbkowska
- Department of Medical Chemistry, Pomeranian Medical University, Rybacka 1, 70-204, Szczecin, Poland.
| | - Zofia Ulańczyk
- Department of General Pathology, Pomeranian Medical University, Rybacka 1, 70-204, Szczecin, Poland
| | - Karolina Łuczkowska
- Department of General Pathology, Pomeranian Medical University, Rybacka 1, 70-204, Szczecin, Poland
| | - Dorota Rogińska
- Department of General Pathology, Pomeranian Medical University, Rybacka 1, 70-204, Szczecin, Poland
| | - Anna Sobuś
- Department of General Pathology, Pomeranian Medical University, Rybacka 1, 70-204, Szczecin, Poland
| | - Monika Wasilewska
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, Niezapominajek 8, 30-239, Cracow, Poland
| | - Maria Olszewska
- Department of Medical Chemistry, Pomeranian Medical University, Rybacka 1, 70-204, Szczecin, Poland
| | - Katarzyna Jakubowska
- Department of Biochemistry, Pomeranian Medical University, Rybacka 1, 70-204, Szczecin, Poland
| | - Bogusław Machaliński
- Department of General Pathology, Pomeranian Medical University, Rybacka 1, 70-204, Szczecin, Poland
| |
Collapse
|
6
|
Wei M, Lin P, Chen Y, Lee JY, Zhang L, Li F, Ling D. Applications of ion level nanosensors for neuroscience research. Nanomedicine (Lond) 2020; 15:2871-2881. [PMID: 33252311 DOI: 10.2217/nnm-2020-0320] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Ion activities are tightly associated with brain physiology, such as intracranial cell membrane potential, neural activity and neuropathology. Thus, monitoring the ion levels in the brain is of great significance in neuroscience research. Recently, nanosensors have emerged as powerful tools for monitoring brain ion levels and dynamics. With controllable structures and functions, nanosensors have been intensively used for monitoring neural activity and cell function and can be used in disease diagnosis. Here, we summarize the recent advances in the design and application of ion level nanosensors at different physiological levels, aiming to draw a connection of the interrelated intracranial ion activities. Furthermore, perspectives on the rationally designed ion level nanosensors in understanding the brain functions are highlighted.
Collapse
Affiliation(s)
- Min Wei
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Peihua Lin
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Ying Chen
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Ji Young Lee
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Lingxiao Zhang
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Fangyuan Li
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.,Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.,Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Daishun Ling
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.,Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.,Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.,Key Laboratory of Biomedical Engineering of the Ministry of Education, College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou 310058, China
| |
Collapse
|
7
|
Maysinger D, Zhang Q, Kakkar A. Dendrimers as Modulators of Brain Cells. Molecules 2020; 25:E4489. [PMID: 33007959 PMCID: PMC7582352 DOI: 10.3390/molecules25194489] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 09/27/2020] [Accepted: 09/29/2020] [Indexed: 12/19/2022] Open
Abstract
Nanostructured hyperbranched macromolecules have been extensively studied at the chemical, physical and morphological levels. The cellular structural and functional complexity of neural cells and their cross-talk have made it rather difficult to evaluate dendrimer effects in a mixed population of glial cells and neurons. Thus, we are at a relatively early stage of bench-to-bedside translation, and this is due mainly to the lack of data valuable for clinical investigations. It is only recently that techniques have become available that allow for analyses of biological processes inside the living cells, at the nanoscale, in real time. This review summarizes the essential properties of neural cells and dendrimers, and provides a cross-section of biological, pre-clinical and early clinical studies, where dendrimers were used as nanocarriers. It also highlights some examples of biological studies employing dendritic polyglycerol sulfates and their effects on glia and neurons. It is the aim of this review to encourage young scientists to advance mechanistic and technological approaches in dendrimer research so that these extremely versatile and attractive nanostructures gain even greater recognition in translational medicine.
Collapse
Affiliation(s)
- Dusica Maysinger
- Department of Pharmacology and Therapeutics, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada;
| | - Qiaochu Zhang
- Department of Pharmacology and Therapeutics, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada;
- Department of Chemistry, McGill University, 801 Sherbrooke St West, Montreal, QC H3A 0B8, Canada
| | - Ashok Kakkar
- Department of Chemistry, McGill University, 801 Sherbrooke St West, Montreal, QC H3A 0B8, Canada
| |
Collapse
|
8
|
Dąbkowska M, Łuczkowska K, Rogińska D, Sobuś A, Wasilewska M, Ulańczyk Z, Machaliński B. Novel design of (PEG-ylated)PAMAM-based nanoparticles for sustained delivery of BDNF to neurotoxin-injured differentiated neuroblastoma cells. J Nanobiotechnology 2020; 18:120. [PMID: 32867843 PMCID: PMC7457365 DOI: 10.1186/s12951-020-00673-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 08/07/2020] [Indexed: 12/11/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is essential for the development and function of human neurons, therefore it is a promising target for neurodegenerative disorders treatment. Here, we studied BDNF-based electrostatic complex with dendrimer nanoparticles encapsulated in polyethylene glycol (PEG) in neurotoxin-treated, differentiated neuroblastoma SH-SY5Y cells, a model of neurodegenerative mechanisms. PEG layer was adsorbed at dendrimer-protein core nanoparticles to decrease their cellular uptake and to reduce BDNF-other proteins interactions for a prolonged time. Cytotoxicity and confocal microscopy analysis revealed PEG-ylated BDNF-dendrimer nanoparticles can be used for continuous neurotrophic factor delivery to the neurotoxin-treated cells over 24 h without toxic effect. We offer a reliable electrostatic route for efficient encapsulation and controlled transport of fragile therapeutic proteins without any covalent cross-linker; this could be considered as a safe drug delivery system. Understanding the polyvalent BDNF interactions with dendrimer core nanoparticles offers new possibilities for design of well-ordered protein drug delivery systems.
Collapse
Affiliation(s)
- Maria Dąbkowska
- Department of Medical Chemistry, Pomeranian Medical University, Rybacka 1, 70-204, Szczecin, Poland.
| | - Karolina Łuczkowska
- Department of General Pathology, Pomeranian Medical University, Rybacka 1, 70-204, Szczecin, Poland
| | - Dorota Rogińska
- Department of General Pathology, Pomeranian Medical University, Rybacka 1, 70-204, Szczecin, Poland
| | - Anna Sobuś
- Department of General Pathology, Pomeranian Medical University, Rybacka 1, 70-204, Szczecin, Poland
| | - Monika Wasilewska
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, Niezapominajek 8, 30-239, Cracow, Poland
| | - Zofia Ulańczyk
- Department of General Pathology, Pomeranian Medical University, Rybacka 1, 70-204, Szczecin, Poland
| | - Bogusław Machaliński
- Department of General Pathology, Pomeranian Medical University, Rybacka 1, 70-204, Szczecin, Poland.
| |
Collapse
|
9
|
Dąbkowska M, Rogińska D, Kłos P, Sobuś A, Adamczak M, Litwińska Z, Machalińska A, Machaliński B. Electrostatic complex of neurotrophin 4 with dendrimer nanoparticles: controlled release of protein in vitro and in vivo. Int J Nanomedicine 2019; 14:6117-6131. [PMID: 31534337 PMCID: PMC6682179 DOI: 10.2147/ijn.s210140] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 06/04/2019] [Indexed: 12/24/2022] Open
Abstract
Background: NT4 has been regarded as a promising therapeutic protein for treatment of damaged retinal pigment epithelium cells. Purpose: Here, we studied physicochemical parameters of an NT4–polyamidoamine (PAMAM) electrostatic complex, which can provide a sustained concentration of protein in intraocular space over an extended period after delivery. Adsorption/desorption of NT4 molecules to/from positively charged PAMAM dendrimers were precisely determined to control the concentration of bounded/unbounded protein molecules, diffusion coefficient, and size of a protein-laden dendrimer structure. We determined kinetics of NT4 desorption in PBS, vitreous, and damaged retina. Methods: Initially, adsorption of NT4 molecules on PAMAM dendrimers was studied in PBS using dynamic light scattering, electrophoresis, solution depletion, ELISA, and atomic force microscopy. This allowed us precisely to determine desorption of NT4 from nanoparticles under in situ conditions. The maximum coverage of irreversibly adsorbed NT4 determined by ELISA allowed us to devise a robust procedure for preparing stable and well-controlled coverage of NT4 on PAMAM nanoparticles. Thereafter, we studied diffusion of nanospheres containing NT4 molecules by injecting them into vitreous cavities of mice exposed to intravenous injections of sodium iodate and evaluated their intraocular desorption kinetics from drug carriers in vivo. Results: Our measurements revealed NT4–dendrimer nanoparticles can be used for continuous neurotrophic factor delivery, enhancing its distribution into mouse vitreous, as well as damaged retina over 28 days of postinjury observation. Conclusion: Understanding of polyvalent neurotrophin interactions with dendrimer nanoparticles might be useful to obtain well-ordered protein layers, targeting future development of drug-delivery systems, especially for neuroprotection of damaged retinal neurons.
Collapse
Affiliation(s)
- Maria Dąbkowska
- Department of Medical Chemistry, Pomeranian Medical University, Szczecin 70-204, Poland
| | - Dorota Rogińska
- Department of General Pathology, Pomeranian Medical University, Szczecin 70-204, Poland
| | - Patrycja Kłos
- Department of Medical Chemistry, Pomeranian Medical University, Szczecin 70-204, Poland
| | - Anna Sobuś
- Department of General Pathology, Pomeranian Medical University, Szczecin 70-204, Poland
| | - Małgorzata Adamczak
- Department of Pharmacy, School of Pharmacy, University of Oslo, Blindern, Oslo 0316, Norway
| | - Zofia Litwińska
- Department of General Pathology, Pomeranian Medical University, Szczecin 70-204, Poland
| | - Anna Machalińska
- First Department of Ophthalmology, Pomeranian Medical University, Szczecin 70-204, Poland
| | - Bogusław Machaliński
- Department of General Pathology, Pomeranian Medical University, Szczecin 70-204, Poland
| |
Collapse
|
10
|
Sigaeva A, Ong Y, Damle VG, Morita A, van der Laan KJ, Schirhagl R. Optical Detection of Intracellular Quantities Using Nanoscale Technologies. Acc Chem Res 2019; 52:1739-1749. [PMID: 31187980 PMCID: PMC6639779 DOI: 10.1021/acs.accounts.9b00102] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Indexed: 12/11/2022]
Abstract
Optical probes that can be used to measure certain quantities with subcellular resolution give us access to a new level of information at which physics, chemistry, life sciences, and medicine become strongly intertwined. The emergence of these new technologies is owed to great advances in the physical sciences. However, evaluating and improving these methods to new standards requires a joint effort with life sciences and clinical practice. In this Account, we give an overview of the probes that have been developed for measuring a few highly relevant parameters at the subcellular scale: temperature, pH, oxygen, free radicals, inorganic ions, genetic material, and biomarkers. Luminescent probes are available in many varieties, which can be used for measuring temperature, pH, and oxygen. Since they are influenced by virtually any metabolic process in the healthy or diseased cell, these quantities are extremely useful to understand intracellular processes. Probes for them can roughly be divided into molecular dyes with a parameter dependent fluorescence or phosphorescence and nanoparticle platforms. Nanoparticle probes can provide enhanced photostability, measurement quality, and potential for multiple functionalities. Embedding into coatings can improve biocompatibility or prevent nonspecific interactions between the probe and the cellular environment. These qualities need to be matched however with good uptake properties, colloidal properties and eventually intracellular targeting to optimize their practical applicability. Inorganic ions constitute a broad class of compounds or elements, some of which play specific roles in signaling, while others are toxic. Their detection is often difficult due to the cross-talk with similar ions, as well as other parameters. The detection of free radicals, DNA, and biomarkers at extremely low levels has significant potential for biomedical applications. Their presence is linked more directly to physiological and clinical manifestations. Since existing methods for free radical detection are generally poor in sensitivity and spatiotemporal resolution, new reliable methods that are generally applicable can contribute greatly to advancing this topic in biology. Optical methods that detect DNA or RNA and protein biomarkers exist for intracellular applications, but are mostly relevant for the development of rapid point-of-care sample testing. To elucidate the inner workings of cells, focused multidisciplinary research is required to define the validity and limitations of a nanoparticle probe, in both physical and biological terms. Multifunctional platforms and those that are easily made compatible with conventional research equipment have an edge over other techniques in growing the body of research evidencing their versatility.
Collapse
Affiliation(s)
- Alina Sigaeva
- Groningen
University, University Medical
Center Groningen, Antonius
Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Yori Ong
- Groningen
University, University Medical
Center Groningen, Antonius
Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Viraj G. Damle
- Groningen
University, University Medical
Center Groningen, Antonius
Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Aryan Morita
- Groningen
University, University Medical
Center Groningen, Antonius
Deusinglaan 1, 9713 AV Groningen, The Netherlands
- Dept.
Dental Biomedical Sciences, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
| | - Kiran J. van der Laan
- Groningen
University, University Medical
Center Groningen, Antonius
Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Romana Schirhagl
- Groningen
University, University Medical
Center Groningen, Antonius
Deusinglaan 1, 9713 AV Groningen, The Netherlands
| |
Collapse
|
11
|
Li W, Lin J, Wang T, Huang P. Photo-triggered Drug Delivery Systems for Neuron-related Applications. Curr Med Chem 2019; 26:1406-1422. [PMID: 29932026 DOI: 10.2174/0929867325666180622121801] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 04/09/2018] [Accepted: 04/18/2018] [Indexed: 12/11/2022]
Abstract
The development of materials, chemistry and genetics has created a great number of systems for delivering antibiotics, neuropeptides or other drugs to neurons in neuroscience research, and has also provided important and powerful tools in neuron-related applications. Although these drug delivery systems can facilitate the advancement of neuroscience studies, they still have limited applications due to various drawbacks, such as difficulty in controlling delivery molecules or drugs to the target region, and trouble of releasing them in predictable manners. The combination of optics and drug delivery systems has great potentials to address these issues and deliver molecules or drugs to the nervous system with extraordinary spatiotemporal selectivity triggered by light. In this review, we will introduce the development of photo-triggered drug delivery systems in neuroscience research and their neuron-related applications including regulating neural activities, treating neural diseases and inducing nerve regenerations.
Collapse
Affiliation(s)
- Wei Li
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Laboratory of Evolutionary Theranostics, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China.,School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta GA 30332, United States
| | - Jing Lin
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Laboratory of Evolutionary Theranostics, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Tianfu Wang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Laboratory of Evolutionary Theranostics, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Peng Huang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Laboratory of Evolutionary Theranostics, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| |
Collapse
|
12
|
Rong G, Tuttle EE, Neal Reilly A, Clark HA. Recent Developments in Nanosensors for Imaging Applications in Biological Systems. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2019; 12:109-128. [PMID: 30857408 PMCID: PMC6958676 DOI: 10.1146/annurev-anchem-061417-125747] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Sensors are key tools for monitoring the dynamic changes of biomolecules and biofunctions that encode valuable information that helps us understand underlying biological processes of fundamental importance. Because of their distinctive size-dependent physicochemical properties, materials with nanometer scales have recently emerged as promising candidates for biological sensing applications by offering unique insights into real-time changes of key physiological parameters. This review focuses on recent advances in imaging-based nanosensor developments and applications categorized by their signal transduction mechanisms, namely, fluorescence, plasmonics, MRI, and photoacoustics. We further discuss the synergy created by multimodal nanosensors in which sensor components work based on two or more signal transduction mechanisms.
Collapse
Affiliation(s)
- Guoxin Rong
- Department of Bioengineering, Northeastern University, Boston, Massachusetts 02115, USA;
| | - Erin E Tuttle
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, USA
| | - Ashlyn Neal Reilly
- Department of Bioengineering, Northeastern University, Boston, Massachusetts 02115, USA;
| | - Heather A Clark
- Department of Bioengineering, Northeastern University, Boston, Massachusetts 02115, USA;
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, USA
| |
Collapse
|
13
|
Avudaiappan G, Anjaly Jacob K, Theresa LV, Shebitha A, Hiba K, Shenoi PK, Unnikrishnan V, Sreekumar K. A novel dendritic polymer based turn- off fluorescence sensor for the selective detection of cyanide ion in aqueous medium. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.01.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
14
|
Rong G, Kim EH, Qiang Y, Di W, Zhong Y, Zhao X, Fang H, Clark HA. Imaging Sodium Flux during Action Potentials in Neurons with Fluorescent Nanosensors and Transparent Microelectrodes. ACS Sens 2018; 3:2499-2505. [PMID: 30358986 DOI: 10.1021/acssensors.8b00903] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Sodium flux plays a pivotal role in neurobiological processes including initiation of action potentials and regulation of neuronal cell excitability. However, unlike the wide range of fluorescent calcium indicators used extensively for cellular studies, the choice of sodium probes remains limited. We have previously demonstrated optode-based nanosensors (OBNs) for detecting sodium ions with advantageous modular properties such as tunable physiological sensing range, full reversibility, and superb selectivity against key physiological interfering ion potassium. (1) Motivated by bridging the gap between the great interest in sodium imaging of neuronal cell activity as an alternative to patch clamp and limited choices of optical sodium indicators, in this Letter we report the application of nanosensors capable of detecting intracellular sodium flux in isolated rat dorsal root ganglion neurons during electrical stimulation using transparent microelectrodes. Taking advantage of the ratiometric detection scheme offered by this fluorescent modular sensing platform, we performed dual color imaging of the sensor to monitor the intracellular sodium currents underlying trains of action potentials in real time. The combination of nanosensors and microelectrodes for monitoring neuronal sodium dynamics is a novel tool for investigating the regulatory role of sodium ions involved during neural activities.
Collapse
|
15
|
Del Bonis-O’Donnell JT, Chio L, Dorlhiac GF, McFarlane IR, Landry MP. Advances in Nanomaterials for Brain Microscopy. NANO RESEARCH 2018; 11:5144-5172. [PMID: 31105899 PMCID: PMC6516768 DOI: 10.1007/s12274-018-2145-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 07/05/2018] [Accepted: 07/08/2018] [Indexed: 05/19/2023]
Abstract
Microscopic imaging of the brain continues to reveal details of its structure, connectivity, and function. To further improve our understanding of the emergent properties and functions of neural circuits, new methods are necessary to directly visualize the relationship between brain structure, neuron activity, and neurochemistry. Advances in engineering the chemical and optical properties of nanomaterials concurrent with developments in deep-tissue microscopy hold tremendous promise for overcoming the current challenges associated with in vivo brain imaging, particularly for imaging the brain through optically-dense brain tissue, skull, and scalp. To this end, developments in nanomaterials offer much promise toward implementing tunable chemical functionality for neurochemical targeting and sensing, and fluorescence stability for long-term imaging. In this review, we summarize current brain microscopy methods and describe the diverse classes of nanomaterials recently leveraged as contrast agents and functional probes for microscopic optical imaging of the brain.
Collapse
Affiliation(s)
| | - Linda Chio
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720
| | - Gabriel F Dorlhiac
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720
| | - Ian R McFarlane
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720
| | - Markita P Landry
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720
- Innovative Genomics Institute (IGI), Berkeley, CA 94720
- California Institute for Quantitative Biosciences, QB3, University of California, Berkeley, CA 94720
- Chan-Zuckerberg Biohub, San Francisco, CA 94158
| |
Collapse
|
16
|
Li C, Hai J, Li S, Wang B, Yang Z. Luminescent magnetic nanoparticles encapsulated in MOFs for highly selective and sensitive detection of ClO -/SCN - and anti-counterfeiting. NANOSCALE 2018; 10:8667-8676. [PMID: 29700546 DOI: 10.1039/c8nr01487f] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
It is well-known that ClO- and SCN- can cause adverse effects on the environment and organisms; therefore, development of new strategies for detecting ClO- and SCN-, especially in water, are highly desirable. Here, we present luminous Eu(iii) complex-functionalized Fe3O4 nanoparticles encapsulated into zeolitic imidazolate framework materials (nano-ZIF-8) and successfully employ this nano-MOF as a fluorescence probe for selective and sensitive detection of ClO- and SCN-. The introduction of ClO- into nano-ZIF-8 solution induced a significant decrease in the characteristic fluorescence emission of Eu3+ at 613 nm. However, strong fluorescence emission was again observed when SCN- was successively injected into the prepared nano-ZIF-8-ClO-. Thus, a novel fluorescence system for simultaneous detection of free ClO- and SCN- was established. On the basis of the superior adsorption performance of nano-MOF materials, free residual ClO- and SCN- in water was rapidly, sensitively and selectively detected with a detection limit of 0.133 nM and 0.204 nM, respectively. Moreover, nano-ZIF-8 was successfully used for monitoring the concentration levels of ClO- and SCN- in specimens of tap water and Yellow River water. Furthermore, the reversibility and regeneration of nano-ZIF-8 in sensing ClO- and SCN- is advantageous for applications of nano-ZIF-8 in solid-state sensing and anti-counterfeiting. As far as we know, this is the first time that nano-MOFs have been used as a selective fluorescence probe for ClO-/SCN- detection and anti-counterfeiting.
Collapse
Affiliation(s)
- Chaorui Li
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou University, Lanzhou 730000, P.R. China.
| | | | | | | | | |
Collapse
|
17
|
Enhancing cell and gene therapy manufacture through the application of advanced fluorescent optical sensors (Review). Biointerphases 2017; 13:01A301. [PMID: 29246035 DOI: 10.1116/1.5013335] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Cell and gene therapies (CGTs) are examples of future therapeutics that can be used to cure or alleviate the symptoms of disease, by repairing damaged tissue or reprogramming defective genetic information. However, despite the recent advancements in clinical trial outcomes, the path to wide-scale adoption of CGTs remains challenging, such that the emergence of a "blockbuster" therapy has so far proved elusive. Manufacturing solutions for these therapies require the application of scalable and replicable cell manufacturing techniques, which differ markedly from the existing pharmaceutical incumbent. Attempts to adopt this pharmaceutical model for CGT manufacture have largely proved unsuccessful. The most significant challenges facing CGT manufacturing are process analytical testing and quality control. These procedures would greatly benefit from improved sensory technologies that allow direct measurement of critical quality attributes, such as pH, oxygen, lactate and glucose. In turn, this would make manufacturing more robust, replicable and standardized. In this review, the present-day state and prospects of CGT manufacturing are discussed. In particular, the authors highlight the role of fluorescent optical sensors, focusing on their strengths and weaknesses, for CGT manufacture. The review concludes by discussing how the integration of CGT manufacture and fluorescent optical sensors could augment future bioprocessing approaches.
Collapse
|
18
|
Sadaf A, Du Y, Santillan C, Mortensen JS, Molist I, Seven AB, Hariharan P, Skiniotis G, Loland CJ, Kobilka BK, Guan L, Byrne B, Chae PS. Dendronic trimaltoside amphiphiles (DTMs) for membrane protein study. Chem Sci 2017; 8:8315-8324. [PMID: 29619178 PMCID: PMC5858085 DOI: 10.1039/c7sc03700g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 10/14/2017] [Indexed: 01/07/2023] Open
Abstract
A novel amphiphile with a dendronic hydrophobic group (DTM-A6) was markedly effective at stabilizing and visualizing a GPCR-Gs complex.
The critical contribution of membrane proteins in normal cellular function makes their detailed structure and functional analysis essential. Detergents, amphipathic agents with the ability to maintain membrane proteins in a soluble state in aqueous solution, have key roles in membrane protein manipulation. Structural and functional stability is a prerequisite for biophysical characterization. However, many conventional detergents are limited in their ability to stabilize membrane proteins, making development of novel detergents for membrane protein manipulation an important research area. The architecture of a detergent hydrophobic group, that directly interacts with the hydrophobic segment of membrane proteins, is a key factor in dictating their efficacy for both membrane protein solubilization and stabilization. In the current study, we developed two sets of maltoside-based detergents with four alkyl chains by introducing dendronic hydrophobic groups connected to a trimaltoside head group, designated dendronic trimaltosides (DTMs). Representative DTMs conferred enhanced stabilization to multiple membrane proteins compared to the benchmark conventional detergent, DDM. One DTM (i.e., DTM-A6) clearly outperformed DDM in stabilizing human β2 adrenergic receptor (β2AR) and its complex with Gs protein. A further evaluation of this DTM led to a clear visualization of β2AR-Gs complex via electron microscopic analysis. Thus, the current study not only provides novel detergent tools useful for membrane protein study, but also suggests that the dendronic architecture has a role in governing detergent efficacy for membrane protein stabilization.
Collapse
Affiliation(s)
- Aiman Sadaf
- Department of Bionanotechnology , Hanyang University , Ansan , 155-88 , Korea .
| | - Yang Du
- Molecular and Cellular Physiology , Stanford , CA 94305 , USA .
| | - Claudia Santillan
- Department of Cell Physiology and Molecular Biophysics , Center for Membrane Protein Research , School of Medicine , Texas Tech University Health Sciences Center , Lubbock , TX 79430 , USA .
| | - Jonas S Mortensen
- Center of Neuroscience , University of Copenhagen , DK 2200 Copenhagen , Denmark .
| | - Iago Molist
- Department of Life Sciences , Imperial College London , London , SW7 2AZ , UK .
| | - Alpay B Seven
- Structural Biology & Molecular and Cellular Physiology , Stanford , CA 94305 , USA .
| | - Parameswaran Hariharan
- Department of Cell Physiology and Molecular Biophysics , Center for Membrane Protein Research , School of Medicine , Texas Tech University Health Sciences Center , Lubbock , TX 79430 , USA .
| | - Georgios Skiniotis
- Structural Biology & Molecular and Cellular Physiology , Stanford , CA 94305 , USA .
| | - Claus J Loland
- Center of Neuroscience , University of Copenhagen , DK 2200 Copenhagen , Denmark .
| | - Brian K Kobilka
- Molecular and Cellular Physiology , Stanford , CA 94305 , USA .
| | - Lan Guan
- Department of Cell Physiology and Molecular Biophysics , Center for Membrane Protein Research , School of Medicine , Texas Tech University Health Sciences Center , Lubbock , TX 79430 , USA .
| | - Bernadette Byrne
- Department of Life Sciences , Imperial College London , London , SW7 2AZ , UK .
| | - Pil Seok Chae
- Department of Bionanotechnology , Hanyang University , Ansan , 155-88 , Korea .
| |
Collapse
|
19
|
Kumar A, Tan A, Wong J, Spagnoli JC, Lam J, Blevins BD, G N, Thorne L, Ashkan K, Xie J, Liu H. Nanotechnology for Neuroscience: Promising Approaches for Diagnostics, Therapeutics and Brain Activity Mapping. ADVANCED FUNCTIONAL MATERIALS 2017; 27:1700489. [PMID: 30853878 PMCID: PMC6404766 DOI: 10.1002/adfm.201700489] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Unlocking the secrets of the brain is a task fraught with complexity and challenge - not least due to the intricacy of the circuits involved. With advancements in the scale and precision of scientific technologies, we are increasingly equipped to explore how these components interact to produce a vast range of outputs that constitute function and disease. Here, an insight is offered into key areas in which the marriage of neuroscience and nanotechnology has revolutionized the industry. The evolution of ever more sophisticated nanomaterials culminates in network-operant functionalized agents. In turn, these materials contribute to novel diagnostic and therapeutic strategies, including drug delivery, neuroprotection, neural regeneration, neuroimaging and neurosurgery. Further, the entrance of nanotechnology into future research arenas including optogenetics, molecular/ion sensing and monitoring, and piezoelectric effects is discussed. Finally, considerations in nanoneurotoxicity, the main barrier to clinical translation, are reviewed, and direction for future perspectives is provided.
Collapse
Affiliation(s)
- Anil Kumar
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Aaron Tan
- UCL Medical School, University College London (UCL), London, United Kingdom
| | - Joanna Wong
- Imperial College School of Medicine, Imperial College London,London, United Kingdom
| | - Jonathan Clayton Spagnoli
- Department of Chemistry, Bio-Imaging Research Center, University of Georgia, Athens, Georgia 30602, United States
| | - James Lam
- UCL Medical School, University College London (UCL), London, United Kingdom
| | - Brianna Diane Blevins
- Department of Chemistry, Bio-Imaging Research Center, University of Georgia, Athens, Georgia 30602, United States
| | - Natasha G
- UCL Medical School, University College London (UCL), London, United Kingdom
| | - Lewis Thorne
- Department of Neurosurgery, National Hospital for Neurology and Neurosurgery, Queen Square, London, United Kingdom
| | - Keyoumars Ashkan
- Department of Neurosurgery, King's College Hospital NHS Foundation Trust, King's College London, London, United Kingdom
| | - Jin Xie
- Department of Chemistry, Bio-Imaging Research Center, University of Georgia, Athens, Georgia 30602, United States
| | - Hong Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| |
Collapse
|
20
|
Na⁺ i,K⁺ i-Dependent and -Independent Signaling Triggered by Cardiotonic Steroids: Facts and Artifacts. Molecules 2017; 22:molecules22040635. [PMID: 28420099 PMCID: PMC6153942 DOI: 10.3390/molecules22040635] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 03/31/2017] [Accepted: 04/11/2017] [Indexed: 11/17/2022] Open
Abstract
Na⁺,K⁺-ATPase is the only known receptor of cardiotonic steroids (CTS) whose interaction with catalytic α-subunits leads to inhibition of this enzyme. As predicted, CTS affect numerous cellular functions related to the maintenance of the transmembrane gradient of monovalent cations, such as electrical membrane potential, cell volume, transepithelial movement of salt and osmotically-obliged water, symport of Na⁺ with inorganic phosphate, glucose, amino acids, nucleotides, etc. During the last two decades, it was shown that side-by-side with these canonical Na⁺i/K⁺i-dependent cellular responses, long-term exposure to CTS affects transcription, translation, tight junction, cell adhesion and exhibits tissue-specific impact on cell survival and death. It was also shown that CTS trigger diverse signaling cascades via conformational transitions of the Na⁺,K⁺-ATPase α-subunit that, in turn, results in the activation of membrane-associated non-receptor tyrosine kinase Src, phosphatidylinositol 3-kinase and the inositol 1,4,5-triphosphate receptor. These findings allowed researchers to propose that endogenous CTS might be considered as a novel class of steroid hormones. We focus our review on the analysis of the relative impact Na⁺i,K⁺i-mediated and -independent pathways in cellular responses evoked by CTS.
Collapse
|
21
|
Wellbourne-Wood J, Rimmele TS, Chatton JY. Imaging extracellular potassium dynamics in brain tissue using a potassium-sensitive nanosensor. NEUROPHOTONICS 2017; 4:015002. [PMID: 28217712 PMCID: PMC5299859 DOI: 10.1117/1.nph.4.1.015002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 01/19/2017] [Indexed: 05/25/2023]
Abstract
Neuronal activity results in the release of [Formula: see text] into the extracellular space (ECS). Classically, measurements of extracellular [Formula: see text] ([Formula: see text]) are carried out using [Formula: see text]-sensitive microelectrodes, which provide a single point measurement with undefined spatial resolution. An imaging approach would enable the spatiotemporal mapping of [Formula: see text]. Here, we report on the design and characterization of a fluorescence imaging-based [Formula: see text]-sensitive nanosensor for the ECS based on dendrimer nanotechnology. Spectral characterization, sensitivity, and selectivity of the nanosensor were assessed by spectrofluorimetry, as well as in both wide-field and two-photon microscopy settings, demonstrating the nanosensor efficacy over the physiologically relevant ion concentration range. Spatial and temporal kinetics of the nanosensor responses were assessed using a localized iontophoretic [Formula: see text] application on a two-photon imaging setup. Using acute mouse brain slices, we demonstrate that the nanosensor is retained in the ECS for extended periods of time. In addition, we present a ratiometric version of the nanosensor, validate its sensitivity in brain tissue in response to elicited neuronal activity and correlate the responses to the extracellular field potential. Together, this study demonstrates the efficacy of the [Formula: see text]-sensitive nanosensor approach and validates the possibility of creating multimodal nanosensors.
Collapse
Affiliation(s)
- Joel Wellbourne-Wood
- University of Lausanne, Department of Fundamental Neurosciences, Lausanne, Switzerland
| | - Theresa S. Rimmele
- University of Lausanne, Department of Fundamental Neurosciences, Lausanne, Switzerland
| | - Jean-Yves Chatton
- University of Lausanne, Department of Fundamental Neurosciences, Lausanne, Switzerland
- University of Lausanne, Cellular Imaging Facility, Lausanne, Switzerland
| |
Collapse
|
22
|
Iamshanova O, Mariot P, Lehen'kyi V, Prevarskaya N. Comparison of fluorescence probes for intracellular sodium imaging in prostate cancer cell lines. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2016; 45:765-777. [PMID: 27660079 PMCID: PMC5045488 DOI: 10.1007/s00249-016-1173-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 07/23/2016] [Accepted: 09/02/2016] [Indexed: 10/25/2022]
Abstract
Sodium (Na+) ions are known to regulate many signaling pathways involved in both physiological and pathological conditions. In particular, alterations in intracellular concentrations of Na+ and corresponding changes in membrane potential are known to be major actors of cancer progression to metastatic phenotype. Though the functionality of Na+ channels and the corresponding Na+ currents can be investigated using the patch-clamp technique, the latter is rather invasive and a technically difficult method to study intracellular Na+ transients compared to Na+ fluorescence imaging. Despite the fact that Na+ signaling is considered an important controller of cancer progression, only few data using Na+ imaging approaches are available so far, suggesting the persisting challenge within the scientific community. In this study, we describe in detail the approach for application of Na+ imaging technique to measure intracellular Na+ variations in human prostate cancer cells. Accordingly, we used three Na+-specific fluorescent dyes-Na+-binding benzofuran isophthalate (SBFI), CoroNa™ Green (Corona) and Asante NaTRIUM Green-2 (ANG-2). These dyes have been assessed for optimal loading conditions, dissociation constant and working range after different calibration methods, and intracellular Na+ sensitivity, in order to determine which probe can be considered as the most reliable to visualize Na+ fluctuations in vitro.
Collapse
Affiliation(s)
- Oksana Iamshanova
- Inserm U1003, Laboratory of Excellence, Ion Channels Science and Therapeutics, Equipe Labellisée par la Ligue Nationale Contre le Cancer, SIRIC ONCOLille, Université des Sciences et Technologies de Lille, 59656, Villeneuve d'Ascq, France
| | - Pascal Mariot
- Inserm U1003, Laboratory of Excellence, Ion Channels Science and Therapeutics, Equipe Labellisée par la Ligue Nationale Contre le Cancer, SIRIC ONCOLille, Université des Sciences et Technologies de Lille, 59656, Villeneuve d'Ascq, France
| | - V'yacheslav Lehen'kyi
- Inserm U1003, Laboratory of Excellence, Ion Channels Science and Therapeutics, Equipe Labellisée par la Ligue Nationale Contre le Cancer, SIRIC ONCOLille, Université des Sciences et Technologies de Lille, 59656, Villeneuve d'Ascq, France
| | - Natalia Prevarskaya
- Inserm U1003, Laboratory of Excellence, Ion Channels Science and Therapeutics, Equipe Labellisée par la Ligue Nationale Contre le Cancer, SIRIC ONCOLille, Université des Sciences et Technologies de Lille, 59656, Villeneuve d'Ascq, France.
| |
Collapse
|
23
|
Kavyani S, Amjad-Iranagh S, Dadvar M, Modarress H. Hybrid Dendrimers of PPI(core)-PAMAM(shell): A Molecular Dynamics Simulation Study. J Phys Chem B 2016; 120:9564-75. [PMID: 27557447 DOI: 10.1021/acs.jpcb.6b05142] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The structural properties of hybrid dendrimers PPI(core)-PAMAM(shell) for application in drug delivery are studied by coarse-grained molecular dynamics simulation, and their capacity to encapsulate drug guest molecules such as pyrene is investigated by changing the core (PPI) in the PPI-PAMAM hybrids. For this purpose, a coarse-grained model for PPI dendrimer is developed and is used to predict the structural properties as a function of PPI core size, such as the size of hybrid dendrimers, the depth of water penetration, the extent of back-folding of their chain terminals, the size and distribution of created cavities, and asphericity. The results show that the location of pyrene in the interior structure of the hybrids is independent of PPI core size and the branching chains create a barrier against the penetrating molecules in the shell of PPI. Then, by adding the PAMAM to the surface of PPI, this barrier is removed, and this will enhance the encapsulation capacity of the hybrid.
Collapse
Affiliation(s)
- Sajjad Kavyani
- Department of Chemical Engineering, Amirkabir University of Technology , Tehran, Iran
| | - Sepideh Amjad-Iranagh
- Department of Chemical Engineering, Amirkabir University of Technology , Tehran, Iran
| | - Mitra Dadvar
- Department of Chemical Engineering, Amirkabir University of Technology , Tehran, Iran
| | - Hamid Modarress
- Department of Chemical Engineering, Amirkabir University of Technology , Tehran, Iran
| |
Collapse
|
24
|
Pamam built-on-silicon wafer thin-layer extraction devices for selective metal contamination detection. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.04.063] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
25
|
Ruckh TT, Skipwith CG, Chang W, Bulovic V, Anikeeva P, Clark HA. Ion-Switchable Quantum Dot Förster Resonance Energy Transfer Rates in Ratiometric Potassium Sensors. ACS NANO 2016; 10:4020-30. [PMID: 27089024 PMCID: PMC5270641 DOI: 10.1021/acsnano.5b05396] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The tools for optically imaging cellular potassium concentrations in real-time are currently limited to a small set of molecular indicator dyes. Quantum dot-based nanosensors are more photostable and tunable than organic indicators, but previous designs have fallen short in size, sensitivity, and selectivity. Here, we introduce a small, sensitive, and selective nanosensor for potassium measurements. A dynamic quencher modulates the fluorescence emitted by two different quantum dot species to produce a ratiometric signal. We characterized the potassium-modulated sensor properties and investigated the photonic interactions within the sensors. The quencher's protonation changes in response to potassium, which modulates its Förster radiative energy transfer rate and the corresponding interaction radii with each quantum dot species. The nanosensors respond to changes in potassium concentrations typical of the cellular environment and thus provide a promising tool for imaging potassium fluxes during biological events.
Collapse
Affiliation(s)
- Timothy T. Ruckh
- Department of Pharmaceutical Sciences, Northeastern University, 360 Huntington Ave, Boston, MA 02115
| | - Christopher G. Skipwith
- Department of Pharmaceutical Sciences, Northeastern University, 360 Huntington Ave, Boston, MA 02115
| | - Wendi Chang
- Department of Electrical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139
| | - Vladimir Bulovic
- Department of Electrical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139
| | - Polina Anikeeva
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139
| | - Heather A. Clark
- Department of Pharmaceutical Sciences, Northeastern University, 360 Huntington Ave, Boston, MA 02115
| |
Collapse
|
26
|
Maysinger D, Ji J, Hutter E, Cooper E. Nanoparticle-Based and Bioengineered Probes and Sensors to Detect Physiological and Pathological Biomarkers in Neural Cells. Front Neurosci 2015; 9:480. [PMID: 26733793 PMCID: PMC4683200 DOI: 10.3389/fnins.2015.00480] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 11/30/2015] [Indexed: 01/11/2023] Open
Abstract
Nanotechnology, a rapidly evolving field, provides simple and practical tools to investigate the nervous system in health and disease. Among these tools are nanoparticle-based probes and sensors that detect biochemical and physiological properties of neurons and glia, and generate signals proportionate to physical, chemical, and/or electrical changes in these cells. In this context, quantum dots (QDs), carbon-based structures (C-dots, grapheme, and nanodiamonds) and gold nanoparticles are the most commonly used nanostructures. They can detect and measure enzymatic activities of proteases (metalloproteinases, caspases), ions, metabolites, and other biomolecules under physiological or pathological conditions in neural cells. Here, we provide some examples of nanoparticle-based and genetically engineered probes and sensors that are used to reveal changes in protease activities and calcium ion concentrations. Although significant progress in developing these tools has been made for probing neural cells, several challenges remain. We review many common hurdles in sensor development, while highlighting certain advances. In the end, we propose some future directions and ideas for developing practical tools for neural cell investigations, based on the maxim "Measure what is measurable, and make measurable what is not so" (Galileo Galilei).
Collapse
Affiliation(s)
- Dusica Maysinger
- Department of Pharmacology and Therapeutics, McGill University Montreal, QC, Canada
| | - Jeff Ji
- Department of Pharmacology and Therapeutics, McGill University Montreal, QC, Canada
| | - Eliza Hutter
- Department of Pharmacology and Therapeutics, McGill University Montreal, QC, Canada
| | - Elis Cooper
- Department of Physiology, McGill University Montreal, QC, Canada
| |
Collapse
|
27
|
Schwartz S, Fixler D, Popovtzer R, Shefi O. Fluorescence life-time imaging and steady state polarization for examining binding of fluorophores to gold nanoparticles. JOURNAL OF BIOPHOTONICS 2015; 8:944-951. [PMID: 25755202 DOI: 10.1002/jbio.201400136] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 01/01/2015] [Accepted: 02/16/2015] [Indexed: 06/04/2023]
Abstract
Nanocomposites as multifunctional agents are capable of combing imaging and cell biology technologies. The conventional methods used for validation of the conjugation process of nanoparticles (NPs) to fluorescent molecules such as spectroscopy analysis and surface potential measurements, are not sufficient. In this paper we present a new and highly sensitive procedure that uses the combination of (1) fluorescence spectrum, (2) fluorescence lifetime, and (3) steady state fluorescence polarization measurements. We characterize and analyze gold NPs with Lucifer yellow (LY) surface coating as a model. We demonstrate the ability to differentiate between LY-GNP (the conjugated complex) and a mixture of coated NP and free dyes. We suggest the approach for neuroscience applications where LY is used for detecting and labeling cells, studying morphology and intracellular communications. Histograms of Fluorescence lifetime imaging (FLIM) of free LY dye (Left) in comparison to the conjugated dye to gold nanoparticles, LY-GNP (Middle) enable the differentiation between LY-GNP (the conjugated complex) and a mixture of coated NP and free dyes (Right).
Collapse
Affiliation(s)
- Shmulik Schwartz
- Gonda Multidisciplinary Brain Research Center, Bar Ilan University, 5290002, Ramat Gan, Israel
- Faculty of Engineering, Bar Ilan University, 5290002, Ramat Gan, Israel
- Institute of Nanotechnology and Advanced Materials, Bar Ilan University, 5290002, Ramat Gan, Israel
| | - Dror Fixler
- Faculty of Engineering, Bar Ilan University, 5290002, Ramat Gan, Israel
- Institute of Nanotechnology and Advanced Materials, Bar Ilan University, 5290002, Ramat Gan, Israel
| | - Rachela Popovtzer
- Faculty of Engineering, Bar Ilan University, 5290002, Ramat Gan, Israel
- Institute of Nanotechnology and Advanced Materials, Bar Ilan University, 5290002, Ramat Gan, Israel
| | - Orit Shefi
- Faculty of Engineering, Bar Ilan University, 5290002, Ramat Gan, Israel.
- Institute of Nanotechnology and Advanced Materials, Bar Ilan University, 5290002, Ramat Gan, Israel.
| |
Collapse
|
28
|
Søndergaard RV, Christensen NM, Henriksen JR, Kumar EKP, Almdal K, Andresen TL. Facing the Design Challenges of Particle-Based Nanosensors for Metabolite Quantification in Living Cells. Chem Rev 2015; 115:8344-78. [PMID: 26244372 DOI: 10.1021/cr400636x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Rikke V Søndergaard
- Department of Micro- and Nanotechnology, Technical University of Denmark , Produktionstorvet 423, 2800 Lyngby, Denmark
| | - Nynne M Christensen
- Department of Micro- and Nanotechnology, Technical University of Denmark , Produktionstorvet 423, 2800 Lyngby, Denmark
| | - Jonas R Henriksen
- Department of Micro- and Nanotechnology, Technical University of Denmark , Produktionstorvet 423, 2800 Lyngby, Denmark
| | - E K Pramod Kumar
- Department of Micro- and Nanotechnology, Technical University of Denmark , Produktionstorvet 423, 2800 Lyngby, Denmark
| | - Kristoffer Almdal
- Department of Micro- and Nanotechnology, Technical University of Denmark , Produktionstorvet 423, 2800 Lyngby, Denmark
| | - Thomas L Andresen
- Department of Micro- and Nanotechnology, Technical University of Denmark , Produktionstorvet 423, 2800 Lyngby, Denmark
| |
Collapse
|
29
|
Shakhbazau A, Mishra M, Chu TH, Brideau C, Cummins K, Tsutsui S, Shcharbin D, Majoral JP, Mignani S, Blanchard-Desce M, Bryszewska M, Yong VW, Stys PK, van Minnen J. Fluorescent Phosphorus Dendrimer as a Spectral Nanosensor for Macrophage Polarization and Fate Tracking in Spinal Cord Injury. Macromol Biosci 2015; 15:1523-34. [DOI: 10.1002/mabi.201500150] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 05/29/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Antos Shakhbazau
- Hotchkiss Brain Institute and Cumming School of Medicine; University of Calgary; HRIC 1AA02, 3280 Hospital Drive, NW T2N4Z6 Calgary Canada
| | - Manoj Mishra
- Hotchkiss Brain Institute and Cumming School of Medicine; University of Calgary; HRIC 1AA02, 3280 Hospital Drive, NW T2N4Z6 Calgary Canada
| | - Tak-Ho Chu
- Hotchkiss Brain Institute and Cumming School of Medicine; University of Calgary; HRIC 1AA02, 3280 Hospital Drive, NW T2N4Z6 Calgary Canada
| | - Craig Brideau
- Hotchkiss Brain Institute and Cumming School of Medicine; University of Calgary; HRIC 1AA02, 3280 Hospital Drive, NW T2N4Z6 Calgary Canada
| | - Karen Cummins
- Hotchkiss Brain Institute and Cumming School of Medicine; University of Calgary; HRIC 1AA02, 3280 Hospital Drive, NW T2N4Z6 Calgary Canada
| | - Shigeki Tsutsui
- Hotchkiss Brain Institute and Cumming School of Medicine; University of Calgary; HRIC 1AA02, 3280 Hospital Drive, NW T2N4Z6 Calgary Canada
| | | | | | - Serge Mignani
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologique; Université Paris Descartes; Paris France
| | | | - Maria Bryszewska
- Department of General Biophysics, Faculty of Biology and Environmental Protection; University of Lodz; Lodz Poland
| | - V. Wee Yong
- Hotchkiss Brain Institute and Cumming School of Medicine; University of Calgary; HRIC 1AA02, 3280 Hospital Drive, NW T2N4Z6 Calgary Canada
| | - Peter K. Stys
- Hotchkiss Brain Institute and Cumming School of Medicine; University of Calgary; HRIC 1AA02, 3280 Hospital Drive, NW T2N4Z6 Calgary Canada
| | - Jan van Minnen
- Hotchkiss Brain Institute and Cumming School of Medicine; University of Calgary; HRIC 1AA02, 3280 Hospital Drive, NW T2N4Z6 Calgary Canada
| |
Collapse
|
30
|
Hamilton GRC, Sahoo SK, Kamila S, Singh N, Kaur N, Hyland BW, Callan JF. Optical probes for the detection of protons, and alkali and alkaline earth metal cations. Chem Soc Rev 2015; 44:4415-32. [PMID: 25742963 DOI: 10.1039/c4cs00365a] [Citation(s) in RCA: 129] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Luminescent sensors and switches continue to play a key role in shaping our understanding of key biochemical processes, assist in the diagnosis of disease and contribute to the design of new drugs and therapies. Similarly, their contribution to the environment cannot be understated as they offer a portable means to undertake field testing for hazardous chemicals and pollutants such as heavy metals. From a physiological perspective, the Group I and II metal ions are among the most important in the periodic table with blood plasma levels of H(+), Na(+) and Ca(2+) being indicators of several possible disease states. In this review, we examine the progress that has been made in the development of luminescent probes for Group I and Group II ions as well as protons. The potential applications of these probes and the mechanism involved in controlling their luminescent response upon analyte binding will also be discussed.
Collapse
Affiliation(s)
- Graham R C Hamilton
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK.
| | | | | | | | | | | | | |
Collapse
|
31
|
You L, Zha D, Anslyn EV. Recent Advances in Supramolecular Analytical Chemistry Using Optical Sensing. Chem Rev 2015; 115:7840-92. [PMID: 25719867 DOI: 10.1021/cr5005524] [Citation(s) in RCA: 624] [Impact Index Per Article: 69.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Lei You
- †State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 35002, People's Republic of China
| | - Daijun Zha
- †State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 35002, People's Republic of China
| | - Eric V Anslyn
- ‡Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| |
Collapse
|
32
|
Ji Y, Qian Y. pH dependent one-/two-photon fluorescence emission properties and mechanism of the dendrimer PAMAM triphenylamine imine. RSC Adv 2015. [DOI: 10.1039/c5ra13046h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
pH dependent fluorescence emission of PTS-G0 and ETS were compared, to better understand intrinsic fluorescence phenomena of PAMAM dendrimers.
Collapse
Affiliation(s)
- Yan Ji
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
- China
- School of Chemistry and Chemical Engineering
| | - Ying Qian
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- China
| |
Collapse
|
33
|
Taki M, Ogasawara H, Osaki H, Fukazawa A, Sato Y, Ogasawara K, Higashiyama T, Yamaguchi S. A red-emitting ratiometric fluorescent probe based on a benzophosphole P-oxide scaffold for the detection of intracellular sodium ions. Chem Commun (Camb) 2015; 51:11880-3. [DOI: 10.1039/c5cc03547c] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A red-emitting fluorescent probe based on a benzophospholeP-oxide can ratiometrically visualize the change in Na+concentration in living cells.
Collapse
Affiliation(s)
- Masayasu Taki
- Institute of Transformative Bio-Molecules (WPI-ITbM)
- Nagoya University
- Nagoya 464-8602
- Japan
| | - Hiroaki Ogasawara
- Department of Chemistry
- Graduate School of Science
- Nagoya University
- Nagoya 464-8602
- Japan
| | - Hiroshi Osaki
- Department of Chemistry
- Graduate School of Science
- Nagoya University
- Nagoya 464-8602
- Japan
| | - Aiko Fukazawa
- Department of Chemistry
- Graduate School of Science
- Nagoya University
- Nagoya 464-8602
- Japan
| | - Yoshikatsu Sato
- Institute of Transformative Bio-Molecules (WPI-ITbM)
- Nagoya University
- Nagoya 464-8602
- Japan
| | - Kimi Ogasawara
- JST ERATO Higashiyama Live-Holonics Project
- Nagoya University
- Nagoya 464-8602
- Japan
| | - Tetsuya Higashiyama
- Institute of Transformative Bio-Molecules (WPI-ITbM)
- Nagoya University
- Nagoya 464-8602
- Japan
- JST ERATO Higashiyama Live-Holonics Project
| | - Shigehiro Yamaguchi
- Institute of Transformative Bio-Molecules (WPI-ITbM)
- Nagoya University
- Nagoya 464-8602
- Japan
- Department of Chemistry
| |
Collapse
|
34
|
Orlov SN, Hamet P. Salt and gene expression: evidence for [Na+]i/[K+]i-mediated signaling pathways. Pflugers Arch 2014; 467:489-98. [PMID: 25479826 DOI: 10.1007/s00424-014-1650-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 10/27/2014] [Accepted: 11/07/2014] [Indexed: 01/11/2023]
Abstract
Our review focuses on the recent data showing that gene transcription and translation are under the control of signaling pathways triggered by modulation of the intracellular sodium/potassium ratio ([Na+]i/[K+]i). Side-by-side with sensing of osmolality elevation by tonicity enhancer-binding protein (TonEBP, NFAT5), [Na+]i/[K+]i-mediated excitation-transcription coupling may contribute to the transcriptomic changes evoked by high salt consumption. This novel mechanism includes the sensing of heightened Na+ concentration in the plasma, interstitial, and cerebrospinal fluids via augmented Na+ influx in the endothelium, immune system cells, and the subfornical organ, respectively. In these cells, [Na+]i/[K+]i ratio elevation, triggered by augmented Na+ influx, is further potentiated by increased production of endogenous Na+,K+-ATPase inhibitors documented in salt-sensitive hypertension.
Collapse
Affiliation(s)
- Sergei N Orlov
- Laboratory of Biological Membranes, Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1/12, Moscow, 119991, Russia,
| | | |
Collapse
|
35
|
Xu L, Zhang H, Wu Y. Dendrimer advances for the central nervous system delivery of therapeutics. ACS Chem Neurosci 2014; 5:2-13. [PMID: 24274162 DOI: 10.1021/cn400182z] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The effectiveness of noninvasive treatment for central nervous system (CNS) diseases is generally limited by the poor access of therapeutic agents into the CNS. Most CNS drugs cannot permeate into the brain parenchyma because of the blood-brain barrier (BBB), and overcoming this has become one of the most significant challenges in the development of CNS therapeutics. Rapid advances in nanotechnology have provided promising solutions to this challenge. This review discusses the latest applications of dendrimers in the treatment of CNS diseases with an emphasis on brain tumors. Dendrimer-mediated drug delivery, imaging, and diagnosis are also reviewed. The toxicity, biodistribution, and transport mechanisms in dendrimer-mediated delivery of CNS therapeutic agents bypassing or crossing the BBB are also discussed. Future directions and major challenges of dendrimer-mediated delivery of CNS therapeutic agents are included.
Collapse
Affiliation(s)
- Leyuan Xu
- Department
of Biomedical Engineering, ‡Department of Mechanical and Nuclear Engineering, §Department of Chemical
and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Hao Zhang
- Department
of Biomedical Engineering, ‡Department of Mechanical and Nuclear Engineering, §Department of Chemical
and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Yue Wu
- Department
of Biomedical Engineering, ‡Department of Mechanical and Nuclear Engineering, §Department of Chemical
and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| |
Collapse
|
36
|
Ji Y, Yang X, Qian Y. Poly-amidoamine structure characterization: amide resonance structure of imidic acid (HO–CN) and tertiary ammonium. RSC Adv 2014. [DOI: 10.1039/c4ra09081k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The dendrimer PAMAM has an amide resonance structure,i.e.imidic acid (HO–CN), and a tertiary ammonium structure, which can be characterized using15N/1H/2D NH/13C NMR, IR and MS.
Collapse
Affiliation(s)
- Yan Ji
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing, China
| | - XiaoLiang Yang
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, China
| | - Ying Qian
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing, China
| |
Collapse
|
37
|
Ji Y, Qian Y. A study using quantum chemical theory methods on the intrinsic fluorescence emission and the possible emission mechanisms of PAMAM. RSC Adv 2014. [DOI: 10.1039/c4ra09184a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Structural units imidic acid (HO–CN) and tertiary ammonium in PAMAM dendrimers were proven to give fluorescence emission by TDDFT methods.
Collapse
Affiliation(s)
- Yan Ji
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing, China
| | - Ying Qian
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing, China
| |
Collapse
|
38
|
Ruckh TT, Mehta AA, Dubach JM, Clark HA. Polymer-free optode nanosensors for dynamic, reversible, and ratiometric sodium imaging in the physiological range. Sci Rep 2013; 3:3366. [PMID: 24284431 PMCID: PMC3842545 DOI: 10.1038/srep03366] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 11/12/2013] [Indexed: 11/10/2022] Open
Abstract
This work introduces a polymer-free optode nanosensor for ratiometric sodium imaging. Transmembrane ion dynamics are often captured by electrophysiology and calcium imaging, but sodium dyes suffer from short excitation wavelengths and poor selectivity. Optodes, optical sensors composed of a polymer matrix with embedded sensing chemistry, have been translated into nanosensors that selectively image ion concentrations. Polymer-free nanosensors were fabricated by emulsification and were stable by diameter and sensitivity for at least one week. Ratiometric fluorescent measurements demonstrated that the nanosensors are selective for sodium over potassium by ~1.4 orders of magnitude, have a dynamic range centered at 20 mM, and are fully reversible. The ratiometric signal changes by 70% between 10 and 100 mM sodium, showing that they are sensitive to changes in sodium concentration. These nanosensors will provide a new tool for sensitive and quantitative ion imaging.
Collapse
Affiliation(s)
- Timothy T. Ruckh
- Department of Pharmaceutical Sciences, Northeastern University, 360 Huntington Avenue, Boston, MA 02115
- These authors contributed equally to this work
| | - Ankeeta A. Mehta
- Department of Pharmaceutical Sciences, Northeastern University, 360 Huntington Avenue, Boston, MA 02115
- These authors contributed equally to this work
| | - J. Matthew Dubach
- Department of Bioengineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115
| | - Heather A. Clark
- Department of Pharmaceutical Sciences, Northeastern University, 360 Huntington Avenue, Boston, MA 02115
| |
Collapse
|
39
|
Small-molecule fluorophores and fluorescent probes for bioimaging. Pflugers Arch 2013; 465:347-59. [DOI: 10.1007/s00424-013-1234-z] [Citation(s) in RCA: 180] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 01/31/2013] [Accepted: 01/31/2013] [Indexed: 12/14/2022]
|
40
|
Mao X, Li H. Chiral imaging in living cells with functionalized graphene oxide. J Mater Chem B 2013; 1:4267-4272. [DOI: 10.1039/c3tb20729c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
41
|
Koltsova SV, Trushina Y, Haloui M, Akimova OA, Tremblay J, Hamet P, Orlov SN. Ubiquitous [Na+]i/[K+]i-sensitive transcriptome in mammalian cells: evidence for Ca(2+)i-independent excitation-transcription coupling. PLoS One 2012; 7:e38032. [PMID: 22666440 PMCID: PMC3362528 DOI: 10.1371/journal.pone.0038032] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Accepted: 04/29/2012] [Indexed: 12/21/2022] Open
Abstract
Stimulus-dependent elevation of intracellular Ca2+ ([Ca2+]i) affects the expression of numerous genes – a phenomenon known as excitation-transcription coupling. Recently, we found that increases in [Na+]i trigger c-Fos expression via a novel Ca2+i-independent pathway. In the present study, we identified ubiquitous and tissue-specific [Na+]i/[K+]i-sensitive transcriptomes by comparative analysis of differentially expressed genes in vascular smooth muscle cells from rat aorta (RVSMC), the human adenocarcinoma cell line HeLa, and human umbilical vein endothelial cells (HUVEC). To augment [Na+]i and reduce [K+]i, cells were treated for 3 hrs with the Na+,K+-ATPase inhibitor ouabain or placed for the same time in the K+-free medium. Employing Affymetrix-based technology, we detected changes in expression levels of 684, 737 and 1839 transcripts in HeLa, HUVEC and RVSMC, respectively, that were highly correlated between two treatments (p<0.0001; R2>0.62). Among these Na+i/K+i-sensitive genes, 80 transcripts were common for all three types of cells. To establish if changes in gene expression are dependent on increases in [Ca2+]i, we performed identical experiments in Ca2+-free media supplemented with extracellular and intracellular Ca2+ chelators. Surprisingly, this procedure elevated rather than decreased the number of ubiquitous and cell-type specific Na+i/K+i-sensitive genes. Among the ubiquitous Na+i/K+i-sensitive genes whose expression was regulated independently of the presence of Ca2+ chelators by more than 3-fold, we discovered several transcription factors (Fos, Jun, Hes1, Nfkbia), interleukin-6, protein phosphatase 1 regulatory subunit, dual specificity phosphatase (Dusp8), prostaglandin-endoperoxide synthase 2, cyclin L1, whereas expression of metallopeptidase Adamts1, adrenomedulin, Dups1, Dusp10 and Dusp16 was detected exclusively in Ca2+-depleted cells. Overall, our findings indicate that Ca2+i-independent mechanisms of excitation-transcription coupling are involved in transcriptomic alterations triggered by elevation of the [Na+]i/[K+]i ratio. There results likely have profound implications for normal and pathological regulation of mammalian cells, including sustained excitation of neuronal cells, intensive exercise and ischemia-triggered disorders.
Collapse
Affiliation(s)
- Svetlana V. Koltsova
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) – Technopôle Angus, Montreal, PQ, Canada
- Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, Moscow, Russia
| | - Yulia Trushina
- Faculty of Biology, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Mounsif Haloui
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) – Technopôle Angus, Montreal, PQ, Canada
| | - Olga A. Akimova
- Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, Moscow, Russia
- Faculty of Biology, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Johanne Tremblay
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) – Technopôle Angus, Montreal, PQ, Canada
- Department of Medicine, Université de Montréal, Montreal, PQ, Canada
| | - Pavel Hamet
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) – Technopôle Angus, Montreal, PQ, Canada
- Department of Medicine, Université de Montréal, Montreal, PQ, Canada
| | - Sergei N. Orlov
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) – Technopôle Angus, Montreal, PQ, Canada
- Department of Medicine, Université de Montréal, Montreal, PQ, Canada
- * E-mail:
| |
Collapse
|