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Hypoxia-Activated Theragnostic Prodrugs (HATPs): Current State and Future Perspectives. Pharmaceutics 2024; 16:557. [PMID: 38675218 PMCID: PMC11054426 DOI: 10.3390/pharmaceutics16040557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 04/08/2024] [Accepted: 04/13/2024] [Indexed: 04/28/2024] Open
Abstract
Hypoxia is a significant feature of solid tumors and frequently poses a challenge to the effectiveness of tumor-targeted chemotherapeutics, thereby limiting their anticancer activity. Hypoxia-activated prodrugs represent a class of bio-reductive agents that can be selectively activated in hypoxic compartments to unleash the toxic warhead and thus, eliminate malignant tumor cells. However, their applicability can be further elevated by installing fluorescent modalities to yield hypoxia-activated theragnostic prodrugs (HATPs), which can be utilized for the simultaneous visualization and treatment of hypoxic tumor cells. The scope of this review is to summarize noteworthy advances in recent HATPs, highlight the challenges and opportunities for their further development, and discuss their potency to serve as personalized medicines in the future.
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2
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Polarity-Driven Two-Photon Fluorescent Probe for Monitoring the Perturbation in Lipid Droplet Levels during Mitochondrial Dysfunction and Acute Pancreatitis. ACS Sens 2023; 8:3793-3803. [PMID: 37815484 DOI: 10.1021/acssensors.3c01245] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
Lipid droplets (LDs) act as an energy reservoir in cancer cells; on the other hand, mitochondria are hyperactive to fulfill the energy demand to accelerate cell proliferation. We are interested in unfolding the relationship between the cellular energy reservoir and energy producer through fluorescence labeling. Thus, a dual organelle-targeted fluorescent probe MLD-1 has been rationally developed. It visualized the crosstalk between mitochondrial dysfunction and the fluctuation of LDs in live cells. Its two-photon ability allowed us to acquire deep tissue images. For the first time, we have shown that the probe has the ability to track the accumulation of LDs in different mouse organs during pancreatic inflammation. MLD-1, being a selectively polarity-driven, chemo- and photostable LD probe, may offer great possibilities for studying LD-associated biology in due course.
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3
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Monitoring glutathione dynamics in DNA replication (S-phase) using a two-photon reversible ratiometric fluorescent probe. J Mater Chem B 2023; 11:1948-1957. [PMID: 36748270 DOI: 10.1039/d2tb02231a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The redox regulator glutathione (GSH) migrates to the nucleus to give a safeguard to DNA replication in the S-phase. The fluctuation of GSH dynamics in the cell cycle process may help to understand cancerogenesis or other abnormalities in DNA replication. For the first time, we attempted to track the time-dependent S-phase change using the newly developed ratiometric fluorescent probe Nu-GSH. This probe is highly chemoselective towards glutathione and shows an emission intensity shift from 515 nm to 455 nm. It has shown fluorescence reversibility from blue to green channels while scavenging reactive oxygen species H2O2. Both ratiometric fluorescence images and FACS analysis have provided quantitative information on the GSH levels in the nucleoli during DNA replication in the S-phase. Furthermore, GSH fluctuation reciprocated the decay of the S-phase on a time scale. Additionally, its two-photon ability guaranteed its capability to study GSH dynamics in live cells/tissues noninvasively. We envision that the probe Nu-GSH can be used to get high-throughput quantitative information on glutathione dynamics and give an opportunity to monitor its perturbation during the course of cell division.
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4
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TB treatment regimen for children: is a 4-month regimen really better than the 6-month regimen? Int J Tuberc Lung Dis 2022; 26:1197. [PMID: 36447324 DOI: 10.5588/ijtld.22.0375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
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5
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Responding to WHO´s 4-month regimen for drug-susceptible pulmonary TB. Int J Tuberc Lung Dis 2022; 26:898-899. [PMID: 35996294 DOI: 10.5588/ijtld.22.0313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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6
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EP08.04-004 Impact of Comorbidity Scores on Overall Survival in Advanced Non-Small Cell Lung Cancer Patients -A Real-World Experience from Eastern India. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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7
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β-Galactosidase-activated theranostic for hepatic carcinoma therapy and imaging. Chem Commun (Camb) 2022; 58:6413-6416. [PMID: 35543438 DOI: 10.1039/d2cc01825j] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A β-galactosidase activatable fluorescent turn-on theranostic Gal-CGem exhibits gemcitabine release specifically in β-galactosidase overexpressing hepatic carcinoma cells. The cytotoxicity of Gal-CGem in cancer cells is achieved through the apoptotic cell death pathway. Overall, Gal-CGem is a new frontline prodrug in cancer therapy that has provided antineoplastic information through fluorescence imaging.
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8
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Tuberculosis and COVID 19: An epidemic submerged in the pandemic: A case series from Eastern India. Int J Infect Dis 2022. [PMCID: PMC8884738 DOI: 10.1016/j.ijid.2021.12.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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9
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A π-Stacking Based Fluorescent Probe for Labeling of Flavin Analogues in Live Cells through Unusual FRET Process. Anal Chem 2022; 94:3494-3500. [PMID: 35171555 DOI: 10.1021/acs.analchem.1c04024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The flavin adenine dinucleotide (FAD) is an indispensable coenzyme in live cells. It acts as a catalyst in many redox responsive metabolic reactions, including oxidative phosphorylation in mitochondria. The real-time monitoring of flavin is important to understand the disorder in the metabolic process, redox system, etc. Thus, we have developed a fluorescent probe CPy-1 that noncovalently binds with flavin to exhibit the FRET process. 1H- NMR and docking study indicated that there is a strong hydrophobic interaction between flavins and CPy-1. Also, a π-π stacking between isoalloxazine ring in flavin and quinoline and coumarin moieties of CPy-1 favors self-assembly. The nontoxic probe CPy-1 could distinguish cancer cells from normal cells based on expressions of endogenous FAD.
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10
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Cell-specific activation of gemcitabine by endogenous H 2S stimulation and tracking through simultaneous fluorescence turn-on. Chem Commun (Camb) 2021; 57:9614-9617. [PMID: 34486009 DOI: 10.1039/d1cc00118c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The endogenous H2S-driven theranostic H2S-Gem has been invented. The theranostic prodrug H2S-Gem is selectively activated in cancer cells, releasing active gemcitabine with a simultaneous fluorescence turn-on. H2S-Gem selectively inhibited cancer cell growth compared to the mother chemotherapeutic gemcitabine. Overall, it is a unique protocol for tracking and transporting chemotherapeutic agents to tumor areas without the guidance of tumor-directive ligands.
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11
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Polysaccharides as Stabilizers for Polymeric Microcarriers Fabrication. Polymers (Basel) 2021; 13:polym13183045. [PMID: 34577945 PMCID: PMC8467260 DOI: 10.3390/polym13183045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 09/02/2021] [Accepted: 09/07/2021] [Indexed: 12/13/2022] Open
Abstract
Biodegradable polymeric microparticles are widely used in drug delivery systems with prolonged-release profiles and/or cell microcarriers. Their fabrication via the oil/water emulsion solvent evaporation technique has normally required emulsifiers in the aqueous phase. The present work aims to evaluate the effectiveness of various polysaccharides, such as chitosan, hyaluronic acid, cellulose, arabinogalactan, guar and their derivatives, as an alternative to synthetic surfactants for polylactide microparticle stabilization during their fabrication. Targeted modification of the biopolymer’s chemical structure was also tested as a tool to enhance polysaccharides’ emulsifying ability. The transformation of biomacromolecules into a form of nanoparticle via bottom-up or top-down methods and their subsequent application for microparticle fabrication via the Pickering emulsion solvent evaporation technique was useful as a one-step approach towards the preparation of core/shell microparticles. The effect of polysaccharides’ chemical structure and the form of their application on the polylactide microparticles’ total yield, size distribution and morphology was evaluated. The application of polysaccharides has great potential in terms of the development of green chemistry and the biocompatibility of the formed microparticles, which is especially important in biomedicine application.
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12
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Direct Readout Hypoxia Tumor Suppression In Vivo through NIR-Theranostic Activation. ACS APPLIED BIO MATERIALS 2021; 4:5686-5694. [PMID: 35006742 DOI: 10.1021/acsabm.1c00467] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Urgency in finding a suitable therapy in tumor hypoxia strives to develop hypoxia-targeted activatable theranostic. A strategic theranostic prodrug (Azo-M) has been synthesized. Its azo-linker scission under the hypoxia condition has released an near-infrared (NIR)-reporter to determine the extent of chemotherapeutic (melphalan analogue) activation. Under an artificial hypoxia condition, a large shift from 520 to 590 nm in UV absorption was observed in Azo-M. Alongside, the emission maxima had appeared at 625 nm under the said condition. The Azo-M post-incubated HeLa cells have shown upregulation of various apoptotic factors under oxygen deprivation (3%) condition. Azo-M has shown antiproliferative activity under hypoxia conditions in various cancer cells. An ex-vivo biodistribution study indicated that theranostic Azo-M only activated in tumor tissue and to some extent in the liver. The therapeutic activity study in vivo indicated that Azo-M effectively reduced the tumor size and volume (about 2-fold) without the change of bodyweight of mice. The theranostic Azo-M can be a cornerstone to suppress tumor hypoxia and tracking its extent of suppression.
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13
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Amphiphilic fluorescent probe self-encored in plasma to detect pH fluctuations in cancer cell membranes. Chem Commun (Camb) 2021; 57:607-610. [PMID: 33346278 DOI: 10.1039/d0cc06694j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have developed an amphiphilic pH probe (P1CS) to detect pH levels in the plasma membrane in cancer cells. An elevated fluorescence signal at 550 nm at the cell surface of cancer cells (MDA-MB-231, HeLa cells) prompted the application of P1CS as a pH marker for the cancer cell surface, discriminating it from normal cells (WI-38). Moreover, the probe enables labeling of the surface of multilayered tumor spheroids, which promotes its use as a marker for the surface of tumor tissue.
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14
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P38.14 Demographic and Molecular Epidemiologic Profile of Primary Lung Cancer in Eastern India. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Biocompatible fluorescent probe for detecting mitochondrial alkaline phosphatase activity in live cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 212:112043. [PMID: 33022468 DOI: 10.1016/j.jphotobiol.2020.112043] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/09/2020] [Accepted: 09/23/2020] [Indexed: 11/18/2022]
Abstract
Alkaline phosphatase (ALP) is an enzyme that actively plays a significant role in the various metabolic processes by transferring a phosphate group to the protein, nucleic acid, etc. The elevated level of ALP in blood plasma is the hallmark of inflammation/cancer. The hyperactive mitochondria in cancer cells produce an excess of ATP to fulfill the high energy demand. Thus, we have developed a fluorescent probe Mito-Phos for ALP, which can detect phosphatase expression in mitochondria in live cells. The probe Mito-Phos has shown ~15-fold fluorescence intensity increments at 450 nm in the presence of 500 ng/mL of ALP. It takes about 60 min to consume the whole amount of ALP (500 ng/mL) in physiological buffer saline. It can selectively react with ALP even in the presence of other probable cellular reactive components. It is highly biocompatible and nontoxic to the live cells. It has shown ALP expression in a dose-dependent manner by providing concomitant fluorescence images in the blue-channel region. It has localized exclusively in the mitochondria in live cells. The probe Mito-Phos is highly biocompatible with the ability to assess ALP expression in mitochondria in live cells.
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16
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NADH-Activated Dual-Channel Fluorescent Probes for Multicolor Labeling of Live Cells and Tumor Mimic Spheroids. Anal Chem 2020; 92:12356-12362. [PMID: 32814423 DOI: 10.1021/acs.analchem.0c02049] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The 1,4-dihydronicotinamide adenine dinucleotide (NADH) is one of the key coenzymes that participates in various metabolic processes including maintaining the redox balance. Early information on the imbalance of NADH is crucial in the context of diagnosing the pathogenic conditions. Thus, a dual-channel fluorescent probe (MQN) is developed for tracking of NADH/NAD(P)H in live cells. In the presence of NADH, only it showed emission signals at 460 and 550 nm upon excitation at 390 and 450 nm, respectively. The probe could provide accurate information on NADH levels in cancer cells (HeLa) and normal cells (WI-38). We observed that the NADH level in cancer cells (HeLa) is relatively higher than that in normal WI-38 cells. We received similar information on NADH upon calibrating with a commercial NADH kit. Moreover, we evaluated substrate-specific NADH expression in the glycolysis pathway and oxidative phosphorylation process. Also, the dual-channel probe MQN has visualized NADH manipulation in the course of depletion of GSH to maintain cellular redox balance. This dual-channel molecular probe MQN comes out as a new detection tool for NADH levels in live cells and tumor mimic spheroids.
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17
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Self-assembled amphiphilic fluorescent probe: detecting pH-fluctuations within cancer cells and tumour tissues. Chem Sci 2020; 11:9875-9883. [PMID: 34094247 PMCID: PMC8162098 DOI: 10.1039/d0sc03795h] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 08/28/2020] [Indexed: 12/26/2022] Open
Abstract
Abnormal anaerobic metabolism leads to a lowering of the pH of many tumours, both within specific intracellular organelles and in the surrounding extracellular regions. Information relating to pH-fluctuations in cells and tissues could aid in the identification of neoplastic lesions and in understanding the determinants of carcinogenesis. Here we report an amphiphilic fluorescent pH probe (CS-1) that, as a result of its temporal motion, provides pH-related information in cancer cell membranes and selected intracellular organelles without the need for specific tumour targeting. Time-dependent cell imaging studies reveal that CS-1 localizes within the cancer cell-membrane about 20 min post-incubation. This is followed by migration to the lysosomes at 30 min before being taken up in the mitochondria after about 60 min. Probe CS-1 can selectively label cancer cells and 3D cancer spheroids and be readily observed using the green fluorescence channel (λ em = 532 nm). In contrast, CS-1 only labels normal cells marginally, with relatively low Pearson's correlation coefficients being found when co-incubated with standard intracellular organelle probes. Both in vivo and ex vivo experiments provide support for the suggestion that CS-1 acts as a fluorescent label for the periphery of tumours, an effect ascribed to proton-induced aggregation. A much lower response is seen for muscle and liver. Based on the present results, we propose that sensors such as CS-1 may have a role to play in the clinical and pathological detection of tumour tissues or serve as guiding aids for surgery.
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18
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Highly chemoselective turn-on fluorescent probe for ferrous (Fe2+) ion detection in cosmetics and live cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 209:111943. [DOI: 10.1016/j.jphotobiol.2020.111943] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/17/2020] [Accepted: 06/20/2020] [Indexed: 01/06/2023]
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19
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Highly Chemoselective Self-Calibrated Fluorescent Probe Monitors Glutathione Dynamics in Nucleolus in Live Cells. Anal Chem 2020; 92:10989-10995. [DOI: 10.1021/acs.analchem.9b05175] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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20
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Solid-State Synthesis of Water-Soluble Chitosan-g-Hydroxyethyl Cellulose Copolymers. Polymers (Basel) 2020; 12:E611. [PMID: 32156039 PMCID: PMC7182875 DOI: 10.3390/polym12030611] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/21/2020] [Accepted: 03/02/2020] [Indexed: 12/17/2022] Open
Abstract
Graft copolymers of chitosan with cellulose ether have been obtained by the solid-state reactive mixing of chitin, sodium hydroxide and hydroxyethyl cellulose under shear deformation in a pilot twin-screw extruder. The structure and composition of the products were determined by elemental analysis and IR spectroscopy. The physicochemical properties of aqueous solutions of copolymers were studied as a function of the composition, and were correlated to the mechanical characteristics of the resulting films to assess the performance of new copolymers as coating materials, non-woven fibrous materials or emulsifiers for interface stabilization during the microparticle fabrication process.
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21
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Molecular Theranostic Agent with Programmed Activation for Hypoxic Tumors. ACS APPLIED BIO MATERIALS 2019; 2:4648-4655. [DOI: 10.1021/acsabm.9b00722] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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22
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Direct readout protonophore induced selective uncoupling and dysfunction of individual mitochondria within cancer cells. Chem Commun (Camb) 2019; 55:6429-6432. [PMID: 31094377 DOI: 10.1039/c9cc01483g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Concurrently, manipulation of mitochondrial activity and its monitoring have enormous significance in cancer therapy and diagnosis. In this context, a fluorescent probe MitoDP has been developed for validating H2S mediated protonophore (2,4-dinitrophenol, DNP) induced mitochondrial membrane potential change, ROS formation and ATP depletion in cancer cells. The extent of protonophore activation for mitochondrial dysfunction is monitored through fluorescence signalling at 450 nm. The current study provides a proof for the concept of endogenous H2S-mediated controlled and spatial release of bioactive agents, or toxins specifically in mitochondria of cancer cells.
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23
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Synthesis and characterization of polysaccharide hydrogel based on hydrophobic interactions. J Appl Polym Sci 2019. [DOI: 10.1002/app.47665] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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24
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Endogenous H2S-Assisted Cancer-Cell-Specific Activation of Theranostics with Emission Readout. ACS APPLIED BIO MATERIALS 2019; 2:1322-1330. [DOI: 10.1021/acsabm.9b00019] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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25
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FRET-based dual channel fluorescent probe for detecting endogenous/exogenous H2O2/H2S formation through multicolor images. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 191:99-106. [DOI: 10.1016/j.jphotobiol.2018.12.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 12/18/2018] [Accepted: 12/19/2018] [Indexed: 12/01/2022]
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26
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A rhodamine based fluorescent probe validates substrate and cellular hypoxia specific NADH expression. Chem Commun (Camb) 2019; 55:537-540. [DOI: 10.1039/c8cc08991d] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A novel rhodamine-based redox probe (MQR) was developed to visualize the alteration of the NADH level under diverse metabolic perturbations.
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27
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P3.01-06 Concomitant Plasma-Genotyped T790M Positivity and Small Cell Carcinoma Transformation in EGFR-Mutated NSCLC. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1566] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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28
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Azo-based small molecular hypoxia responsive theranostic for tumor-specific imaging and therapy. J Control Release 2018; 288:14-22. [DOI: 10.1016/j.jconrel.2018.08.036] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 08/24/2018] [Accepted: 08/27/2018] [Indexed: 01/08/2023]
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29
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P3.13-16 Concomitant EML4-ALK Rearrangement and EGFR Mutation in Non-Small Cell Lung Cancer Patients: Data from Eastern Indian Hospital. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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30
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Monitoring of topoisomerase (I) inhibitor camptothecin release from endogenous redox-stimulated GO-polymer hybrid carrier. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 189:14-20. [PMID: 30268951 DOI: 10.1016/j.jphotobiol.2018.09.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 09/19/2018] [Accepted: 09/21/2018] [Indexed: 10/28/2022]
Abstract
We have developed endogenous redox-responsive polymer conjugated GO-based hybrid nanomaterials (GO-PEGssFol-CPT) for delivery of anticancer drug camptothecin (CPT) to the cancer cells. The synthesized intermediate (PEGSSFol) and CPT loaded GO- PEGSSFol were characterized using Fourier transform infrared spectroscopy (FTIR) and 1H NMR. The morphological feature changes of TEM and AFM images have confirmed the loading of CPT on the nanocarrier and its release from the nanocarrier. The amount of CPT was loaded was found to be 14.2%. The extent of camptothecin (CPT) release from GO-BiotinPVA-CPT in the presence of different concentrations of glutathione (GSH) was monitored with the increase in the fluorescence intensity at λmax 438 nm and UV-Vis absorbance at 366 nm. The time-dependent camptothecin (CPT) release was monitored in the presence of GSH. It was noticed that CPT was completely released from GO-PEGssFol-CPT within 45 min. This release process is free from interference by other ubiquitous analytes in the living system. The constant fluorescence intensity of GO-PEGssFol-CPT against acidic pH indicated that CPT would not be released in the extracellular region of cancer cells. Therefore, such delivery system could be used to prevent unwanted cytotoxicity to the healthy cells. The GO-PEGssFol-CPT showed higher antiproliferative activity against cervical cancer cells compared to the CPT. Thus, GO-PEGssFol-CPT can be a new material to deliver the anticancer drug to the target tumor region.
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31
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Fluorescence Analysis: From Sensing to Imaging. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2018; 2018:2654127. [PMID: 30155340 PMCID: PMC6093013 DOI: 10.1155/2018/2654127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 06/24/2018] [Indexed: 06/08/2023]
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32
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A BODIPY-based two-photon fluorescent probe validates tyrosinase activity in live cells. Chem Commun (Camb) 2018; 53:11213-11216. [PMID: 28956555 DOI: 10.1039/c7cc05043g] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we report rational design, synthesis, and application of a two-photon fluorescent probe (Tyro-1) for tracking intracellular tyrosinase activity. The chemoselective detection of tyrosinase is precluded from interference of other competitive omnipresent oxidizing entities in cellular milieu. The probe showed 12.5-fold fluorescence enhancement at λem = 450 nm in the presence of tyrosinase. The nontoxic probe Tyro-1 provides information about H2O2-mediated upregulation of tyrosinase through cellular imaging. Its two-photon imaging ability makes it a noninvasive tool for validating the expression of tyrosinase in the live cells.
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33
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A ‘turn-on’ fluorescent probe for lysosomal phosphatase: a comparative study for labeling of cancer cells. J Mater Chem B 2018; 6:4514-4521. [DOI: 10.1039/c8tb01143e] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A turn-on fluorescent probe (LP1) discriminates cancer cells from normal cells based on expression of phosphatase in lysosomes.
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34
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A hydrogen sulfide triggered self-immolative fluorescent probe for lysosome labeling in live cells. NEW J CHEM 2018. [DOI: 10.1039/c7nj04119e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We developed a naphthalimide-based, lysosome-targeting, and self-immolative fluorescent probe for H2S detection.
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Self-calibrated fluorescent probe resembled as an indicator of the lysosomal phosphatase pertaining to the cancer cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 177:105-111. [PMID: 29111484 DOI: 10.1016/j.jphotobiol.2017.10.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 10/17/2017] [Accepted: 10/17/2017] [Indexed: 11/30/2022]
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36
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PUB084 Unusual Morphological Variants of Lung Tumors - a Diagnostic Challenge: A Short Series from Eastern India. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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37
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P2.15-002 Pulmonary Large Cell Neuroendocrine Carcinoma (LCNEC): An Experience From Eastern Indian Hospital. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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A bioorthogonal fluorescent probe for mitochondrial hydrogen sulfide: new strategy for cancer cell labeling. Chem Commun (Camb) 2017; 53:8802-8805. [PMID: 28736784 DOI: 10.1039/c7cc05339h] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the application of a chemodosimeter 'turn on' fluorescent probe for detecting endogenous H2S formation in cancer cells. Mito-HS showed a bathochromic shift in the UV-vis-absorption spectrum from 355 nm to 395 nm in the presence of H2S. Furthermore, it showed an ∼43-fold fluorescence enhancement at λem = 450 nm in the presence of H2S (200 μM). The cancer cell-specific fluorescence imaging reveals that Mito-HS has the ability to distinguish cancer cells from normal cells based on the level of endogenous H2S formation. In due course, Mito-HS would be a powerful cancer biomarker based on its ability to estimate endogenous H2S formation in living cells.
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39
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A biotinylated piperazine-rhodol derivative: a ‘turn-on’ probe for nitroreductase triggered hypoxia imaging. Analyst 2017; 142:345-350. [DOI: 10.1039/c6an02107g] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed a nitroreductase responsive theranostic probe1; it comprises biotinylated rhodol in conjunction withp-nitrobenzyl functionality.
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40
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A bioorthogonal ‘turn-on’ fluorescent probe for tracking mitochondrial nitroxyl formation. Chem Commun (Camb) 2017; 53:1723-1726. [DOI: 10.1039/c6cc09082f] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A bioorthogonal mitochondria targeted HNO sensor was applied for the detection of biological concentrations of HNO in vitro in organelles.
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41
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New Insight into a Cancer Theranostic Probe: Efficient Cell-Specific Delivery of SN-38 Guided by Biotinylated Poly(vinyl alcohol). ACS APPLIED MATERIALS & INTERFACES 2016; 8:33430-33438. [PMID: 27960424 DOI: 10.1021/acsami.6b10580] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An optically modulated "turn-on" theranostic prodrug TP1 has been explored and formulated with biotinylated poly(vinyl alcohol) (biotinPVA) to obtain desired pharmacokinetics. TP1, consisting of the antineoplastic camptothecin analogue SN-38, and the fluorescent dye rhodol green have been covalently conjugated through a disulfide bond. Glutathione triggering the release of drug and fluorophore has been well established by UV-vis measurements through mass spectral analysis in physiological conditions. The biocompatible biotinPVA formulated prodrug (PTP1) showed remarkably higher stability against blood serum and cell-specific activation in contrast to that of TP1. Significantly, PTP1 permits monitoring of the delivery and release of well-known topoisomerase I inhibitor SN-38 by modulating fluorescence signal at λem 550 nm within intracellular milieus. Moreover, theranostic probe PTP1 exhibited dose-dependent antiproliferative activity against receptor-positive HeLa cells, whereas it did not show such an effect against receptor-negative NIH3T3 cells. Finally, the cell-specific antiproliferative activity of PTP1 via the apoptotic pathway is an efficient approach in cancer theranostics. Thus, futuristic PTP1 could be a promising agent in which diagnostic and prognostic data will be monitored synergistically.
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42
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Hypoxia-directed and activated theranostic agent: Imaging and treatment of solid tumor. Biomaterials 2016; 104:119-28. [DOI: 10.1016/j.biomaterials.2016.07.010] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 07/07/2016] [Accepted: 07/07/2016] [Indexed: 01/01/2023]
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43
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In Vivo Tracking of Phagocytic Immune Cells Using a Dual Imaging Probe with Gadolinium-Enhanced MRI and Near-Infrared Fluorescence. ACS APPLIED MATERIALS & INTERFACES 2016; 8:10266-10273. [PMID: 27058603 DOI: 10.1021/acsami.6b03344] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A novel dual imaging probe for in vivo magnetic resonance imaging (MRI) and optical imaging was developed by combining gadolinium (Gd)-chelating MR probe and a near-infrared (NIR) fluorophore, aza-BODIPY (AB; BODIPY = boron-dipyrromethene). This aza-BODIPY-based bimodal contrast agent (AB-BCA) showed a significant fluorescence emission around the NIR range and an enhanced longitudinal relaxivity in MR modality. The probe was easily delivered to phagocytic cells of the innate immune system, together with macrophages and dendritic cells (DCs), and presented high-performance fluorescence and MR imaging without obvious cytotoxicity. For in vivo visualization of AB-BCA using MRI and optical imaging, bone marrow-derived DCs were labeled and injected into the footpad of mice, and labeled DCs were tracked in vivo. We observed the migration of AB-BCA-labeled DCs into the lymph nodes via lymphatic vessels using NIR fluorescence and T1-weighted MR images. This dual-modality imaging probe was used for noninvasive monitoring of DC migration into lymph nodes and could be useful for investigating advanced cellular immunotherapy.
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44
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GSH-responsive biotinylated poly(vinyl alcohol)-grafted GO as a nanocarrier for targeted delivery of camptothecin. RSC Adv 2016. [DOI: 10.1039/c6ra09706e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A water-soluble and biocompatible polymer, i.e. biotinylated poly(vinyl alcohol)-grafted graphene oxide (GO), was used as a nanocarrier for targeted delivery of anticancer drug camptothecin (CPT).
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45
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An intramolecular crossed-benzoin reaction based KCN fluorescent probe in aqueous and biological environments. Chem Commun (Camb) 2015; 51:7709-12. [DOI: 10.1039/c5cc02234g] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A turn-on fluorescent probeIND-1was designed for selective cyanide anion sensing in aqueous and biological environments.
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46
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Small conjugate-based theranostic agents: an encouraging approach for cancer therapy. Chem Soc Rev 2015; 44:6670-83. [DOI: 10.1039/c5cs00224a] [Citation(s) in RCA: 276] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We review the latest developments on small conjugate based theranostic agents for tumor treatment and diagnosis using fluorescence and magnetic resonance imaging (MRI).
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47
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Abstract
A cellular responsive, highly selective fluorogenic and chromogenic chemodosimeter probe for HNO is developed.
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48
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49
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A rare case of primary adenoid cystic carcinoma of lung. THE INDIAN JOURNAL OF CHEST DISEASES & ALLIED SCIENCES 2014; 56:175-177. [PMID: 25823114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A 33-year-old male presented with repeated episodes of blood-streaked sputum for last one-and half-year. Chest radiograph showed consolidation in the right lower zone. Fibreoptic bronchoscopy revealed an endoluminal growth in the right lower lobe bronchus. Histopathological examination of bronchoscopic biopsy specimen confirmed adenoid cystic carcinoma.
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50
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An Activatable Theranostic for Targeted Cancer Therapy and Imaging. Angew Chem Int Ed Engl 2014; 53:4469-74. [DOI: 10.1002/anie.201311133] [Citation(s) in RCA: 186] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Revised: 02/17/2014] [Indexed: 11/11/2022]
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