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Balukova A, Bokea K, Barber PR, Ameer-Beg SM, MacRobert AJ, Yaghini E. Cellular Imaging and Time-Domain FLIM Studies of Meso-Tetraphenylporphine Disulfonate as a Photosensitising Agent in 2D and 3D Models. Int J Mol Sci 2024; 25:4222. [PMID: 38673807 PMCID: PMC11050357 DOI: 10.3390/ijms25084222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 04/28/2024] Open
Abstract
Fluorescence lifetime imaging (FLIM) and confocal fluorescence studies of a porphyrin-based photosensitiser (meso-tetraphenylporphine disulfonate: TPPS2a) were evaluated in 2D monolayer cultures and 3D compressed collagen constructs of a human ovarian cancer cell line (HEY). TPPS2a is known to be an effective model photosensitiser for both Photodynamic Therapy (PDT) and Photochemical Internalisation (PCI). This microspectrofluorimetric study aimed firstly to investigate the uptake and subcellular localisation of TPPS2a, and evaluate the photo-oxidative mechanism using reactive oxygen species (ROS) and lipid peroxidation probes combined with appropriate ROS scavengers. Light-induced intracellular redistribution of TPPS2a was observed, consistent with rupture of endolysosomes where the porphyrin localises. Using the same range of light doses, time-lapse confocal imaging permitted observation of PDT-induced generation of ROS in both 2D and 3D cancer models using fluorescence-based ROS together with specific ROS inhibitors. In addition, the use of red light excitation of the photosensitiser to minimise auto-oxidation of the probes was investigated. In the second part of the study, the photophysical properties of TPPS2a in cells were studied using a time-domain FLIM system with time-correlated single photon counting detection. Owing to the high sensitivity and spatial resolution of this system, we acquired FLIM images that enabled the fluorescence lifetime determination of the porphyrin within the endolysosomal vesicles. Changes in the lifetime dynamics upon prolonged illumination were revealed as the vesicles degraded within the cells.
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Affiliation(s)
- Andrea Balukova
- Department of Surgical Biotechnology, Division of Surgery and Interventional Science, University College London, London NW3 2QG, UK; (A.B.); (K.B.)
| | - Kalliopi Bokea
- Department of Surgical Biotechnology, Division of Surgery and Interventional Science, University College London, London NW3 2QG, UK; (A.B.); (K.B.)
| | - Paul R. Barber
- Department of Oncology, UCL Cancer Institute, University College London, London WC1E 6DD, UK;
- Comprehensive Cancer Centre, School of Cancer and Pharmaceutical Sciences, King’s College London, London SE1 9RT, UK;
| | - Simon M. Ameer-Beg
- Comprehensive Cancer Centre, School of Cancer and Pharmaceutical Sciences, King’s College London, London SE1 9RT, UK;
| | - Alexander J. MacRobert
- Department of Surgical Biotechnology, Division of Surgery and Interventional Science, University College London, London NW3 2QG, UK; (A.B.); (K.B.)
| | - Elnaz Yaghini
- Department of Surgical Biotechnology, Division of Surgery and Interventional Science, University College London, London NW3 2QG, UK; (A.B.); (K.B.)
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2
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Enzian P, Kleineberg N, Kirchert E, Schell C, Rahmanzadeh R. Light-Induced Liposomal Drug Delivery with an Amphiphilic Porphyrin and Its Chlorin and Bacteriochlorin Analogues. Mol Pharm 2024; 21:609-621. [PMID: 38189667 DOI: 10.1021/acs.molpharmaceut.3c00749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
The development of targeted drug delivery mechanisms in the human body is a matter of growing interest in medical science. The selective release of therapeutic agents at a specific target site can increase the therapeutical efficiency and at the same time reduce the side effects. Light-sensitive liposomes can release a drug by an externally controlled light trigger. Liposomes containing photosensitizers that can be activated in the longer wavelength range (650-800 nm) are particularly intriguing for medical purposes. This is because light penetration into a tissue is more efficient within this wavelength range, increasing their potential applications. For this study, liposomes with an encapsulated amphiphilic photosensitizer, the porphyrin 5,10-DiOH (5,10-di(4-hydroxyphenyl)-15,20-diphenyl-21,23H-porphyrin), its chlorin (5,10-DiOH-chlorin) and its bacteriochlorin (5,10-DiOH-bacteriochlorin) were synthesized. The porphyrin 5,10-DiOH showed previously effective cargo release after liposomal encapsulation when irradiated at a wavelength of 420 nm. The new synthesized chlorin and bacteriochlorin photosensitizers show additional absorption bands in the longer wavelength range, which would enable excitation in deeper layers of tissue. Effective cargo release with chlorin at a longer wavelength of 650 nm and bacteriochlorin at 740 nm was possible. Irradiation of chlorin allowed more than 75% of the cargo to be released and more than 60% for bacteriochlorin. The new liposomes would enable selective drug release in deeper tissue layers and expand the range of possible applications.
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Affiliation(s)
- Paula Enzian
- Institute of Biomedical Optics, University of Lübeck, Peter-Monnik-Weg 4, Lübeck 23562, Germany
- Medical Laser Center Lübeck, Peter-Monnik-Weg 4, Lübeck 23562, Germany
| | - Nina Kleineberg
- Institute of Biomedical Optics, University of Lübeck, Peter-Monnik-Weg 4, Lübeck 23562, Germany
| | - Elisabeth Kirchert
- Por-Lab, Porphyrin-Laboratories GmbH, Blauenkrog 15, Scharbeutz 23684, Germany
| | - Christian Schell
- Por-Lab, Porphyrin-Laboratories GmbH, Blauenkrog 15, Scharbeutz 23684, Germany
| | - Ramtin Rahmanzadeh
- Institute of Biomedical Optics, University of Lübeck, Peter-Monnik-Weg 4, Lübeck 23562, Germany
- Medical Laser Center Lübeck, Peter-Monnik-Weg 4, Lübeck 23562, Germany
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3
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Butt AM, Abdullah N, Rani NNIM, Ahmad N, Amin MCIM. Endosomal Escape of Bioactives Deployed via Nanocarriers: Insights Into the Design of Polymeric Micelles. Pharm Res 2022; 39:1047-1064. [PMID: 35619043 DOI: 10.1007/s11095-022-03296-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 05/17/2022] [Indexed: 10/18/2022]
Abstract
Cytoplasmic delivery of bioactives requires the use of strategies such as active transport, electroporation, or the use of nanocarriers such as polymeric nanoparticles, liposomes, micelles, and dendrimers. It is essential to deliver bioactive molecules in the cytoplasm to achieve targeted effects by enabling organelle targeting. One of the biggest bottlenecks in the successful cytoplasmic delivery of bioactives through nanocarriers is their sequestration in the endosomes that leads to the degradation of drugs by progressing to lysosomes. In this review, we discussed mechanisms by which nanocarriers are endocytosed, the mechanisms of endosomal escape, and more importantly, the strategies that can be and have been employed for their escape from the endosomes are summarized. Like other nanocarriers, polymeric micelles can be designed for endosomal escape, however, a careful control is needed in their design to balance between the possible toxicity and endosomal escape efficiency. Keeping this in view, polyion complex micelles, and polymers that have the ability to escape the endosome, are fully discussed. Finally, we provided some perspectives for designing the polymeric micelles for efficient cytoplasmic delivery of bioactive agents through endosomal escape.
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Affiliation(s)
- Adeel Masood Butt
- Institute of Pharmaceutical Sciences, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan.
| | - Nabiha Abdullah
- Department of Pharmacy, Quaid-i-Azam University, 45320, Islamabad, Pakistan.,Department of Chemistry, Quaid-i-Azam University, 45320, Islamabad, Pakistan
| | - Nur Najihah Izzati Mat Rani
- Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, 30450, Ipoh, Perak, Malaysia.,Centre for Drug Delivery Technology, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Naveed Ahmad
- Department of Pharmaceutics, College of Pharmacy, Jouf University, Sakaka, 72388, Aljouf, Saudi Arabia
| | - Mohd Cairul Iqbal Mohd Amin
- Centre for Drug Delivery Technology, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia.
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4
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Abstract
Protein-based therapeutics represent a rapidly growing segment of approved disease treatments. Successful intracellular delivery of proteins is an important precondition for expanded in vivo and in vitro applications of protein therapeutics. Direct modification of proteins and peptides for improved cytosolic translocation are a promising method of increasing delivery efficiency and expanding the viability of intracellular protein therapeutics. In this Review, we present recent advances in both synthetic and genetic protein modifications for intracellular delivery. Active endocytosis-based and passive internalization pathways are discussed, followed by a review of modification methods for improved cytosolic delivery. After establishing how proteins can be modified, general strategies for facilitating intracellular delivery, such as chemical supercharging or inclusion of cell-penetrating motifs, are covered. We then outline protein modifications that promote endosomal escape. We finally examine the delivery of two potential classes of therapeutic proteins, antibodies and associated antibody fragments, and gene editing proteins, such as cas9.
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5
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Lin MHC, Chang LC, Chung CY, Huang WC, Lee MH, Chen KT, Lai PS, Yang JT. Photochemical Internalization of Etoposide Using Dendrimer Nanospheres Loaded with Etoposide and Protoporphyrin IX on a Glioblastoma Cell Line. Pharmaceutics 2021; 13:pharmaceutics13111877. [PMID: 34834292 PMCID: PMC8621426 DOI: 10.3390/pharmaceutics13111877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 10/27/2021] [Accepted: 11/02/2021] [Indexed: 11/16/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most common malignant primary neoplasm of the adult central nervous system originating from glial cells. The prognosis of those affected by GBM has remained poor despite advances in surgery, chemotherapy, and radiotherapy. Photochemical internalization (PCI) is a release mechanism of endocytosed therapeutics into the cytoplasm, which relies on the membrane disruptive effect of light-activated photosensitizers. In this study, phototherapy by PCI was performed on a human GBM cell-line using the topoisomerase II inhibitor etoposide (Etop) and the photosensitizer protoporphyrin IX (PpIX) loaded in nanospheres (Ns) made from generation-5 polyamidoamine dendrimers (PAMAM(G5)). The resultant formulation, Etop/PpIX-PAMAM(G5) Ns, measured 217.4 ± 2.9 nm in diameter and 40.5 ± 1.3 mV in charge. Confocal microscopy demonstrated PpIX fluorescence within the endo-lysosomal compartment, and an almost twofold increase in cellular uptake compared to free PpIX by flow cytometry. Phototherapy with 3 min and 5 min light illumination resulted in a greater extent of synergism than with co-administered Etop and PpIX; notably, antagonism was observed without light illumination. Mechanistically, significant increases in oxidative stress and apoptosis were observed with Etop/PpIX-PAMAM(G5) Ns upon 5 min of light illumination in comparison to treatment with either of the agents alone. In conclusion, simultaneous delivery and endo-lysosomal co-localization of Etop and PpIX by PAMAM(G5) Ns leads to a synergistic effect by phototherapy; in addition, the finding of antagonism without light illumination can be advantageous in lowering the dark toxicity and improving photo-selectivity.
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Affiliation(s)
- Martin Hsiu-Chu Lin
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chia-Yi Branch, Chia-Yi 61363, Taiwan; (M.H.-C.L.); (C.-Y.C.); (W.-C.H.); (M.-H.L.); (K.-T.C.)
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan;
- Ph.D. Program in Tissue Engineering and Regenerative Medicine, Biotechnology Center, National Chung Hsing University, Taichung 402, Taiwan
| | - Li-Ching Chang
- Department of Dentistry, Chang Gung Memorial Hospital, Chia-Yi Branch, Chia-Yi 61363, Taiwan;
- Department of Nursing, Chang Gung University of Science and Technology, Chia-Yi 61363, Taiwan
| | - Chiu-Yen Chung
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chia-Yi Branch, Chia-Yi 61363, Taiwan; (M.H.-C.L.); (C.-Y.C.); (W.-C.H.); (M.-H.L.); (K.-T.C.)
| | - Wei-Chao Huang
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chia-Yi Branch, Chia-Yi 61363, Taiwan; (M.H.-C.L.); (C.-Y.C.); (W.-C.H.); (M.-H.L.); (K.-T.C.)
| | - Ming-Hsueh Lee
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chia-Yi Branch, Chia-Yi 61363, Taiwan; (M.H.-C.L.); (C.-Y.C.); (W.-C.H.); (M.-H.L.); (K.-T.C.)
| | - Kuo-Tai Chen
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chia-Yi Branch, Chia-Yi 61363, Taiwan; (M.H.-C.L.); (C.-Y.C.); (W.-C.H.); (M.-H.L.); (K.-T.C.)
| | - Ping-Shan Lai
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan;
| | - Jen-Tsung Yang
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chia-Yi Branch, Chia-Yi 61363, Taiwan; (M.H.-C.L.); (C.-Y.C.); (W.-C.H.); (M.-H.L.); (K.-T.C.)
- College of Medicine, Chang Gung University, Tao-Yuan 33302, Taiwan
- Correspondence: ; Tel.: +886-5-3621000 (ext. 3412); Fax: +886-5-3621000 (ext. 3002)
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6
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Cheng X, Gao J, Ding Y, Lu Y, Wei Q, Cui D, Fan J, Li X, Zhu E, Lu Y, Wu Q, Li L, Huang W. Multi-Functional Liposome: A Powerful Theranostic Nano-Platform Enhancing Photodynamic Therapy. Adv Sci (Weinh) 2021; 8:e2100876. [PMID: 34085415 PMCID: PMC8373168 DOI: 10.1002/advs.202100876] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/11/2021] [Indexed: 05/05/2023]
Abstract
Although photodynamic therapy (PDT) has promising advantages in almost non-invasion, low drug resistance, and low dark toxicity, it still suffers from limitations in the lipophilic nature of most photosensitizers (PSs), short half-life of PS in plasma, poor tissue penetration, and low tumor specificity. To overcome these limitations and enhance PDT, liposomes, as excellent multi-functional nano-carriers for drug delivery, have been extensively studied in multi-functional theranostics, including liposomal PS, targeted drug delivery, controllable drug release, image-guided therapy, and combined therapy. This review provides researchers with a useful reference in liposome-based drug delivery.
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Affiliation(s)
- Xiamin Cheng
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Jing Gao
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Yang Ding
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)Nanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Yao Lu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)Nanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Qiancheng Wei
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Dezhi Cui
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Jiali Fan
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Xiaoman Li
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Ershu Zhu
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Yongna Lu
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Qiong Wu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)Nanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Lin Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)Nanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)Nanjing Tech University (NanjingTech)Nanjing211816P. R. China
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7
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Shilova O, Shramova E, Proshkina G, Deyev S. Natural and Designed Toxins for Precise Therapy: Modern Approaches in Experimental Oncology. Int J Mol Sci 2021; 22:ijms22094975. [PMID: 34067057 PMCID: PMC8124712 DOI: 10.3390/ijms22094975] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 04/29/2021] [Accepted: 05/05/2021] [Indexed: 02/08/2023] Open
Abstract
Cancer cells frequently overexpress specific surface receptors providing tumor growth and survival which can be used for precise therapy. Targeting cancer cell receptors with protein toxins is an attractive approach widely used in contemporary experimental oncology and preclinical studies. Methods of targeted delivery of toxins to cancer cells, different drug carriers based on nanosized materials (liposomes, nanoparticles, polymers), the most promising designed light-activated toxins, as well as mechanisms of the cytotoxic action of the main natural toxins used in modern experimental oncology, are discussed in this review. The prospects of the combined therapy of tumors based on multimodal nanostructures are also discussed.
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Affiliation(s)
- Olga Shilova
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russia; (E.S.); (G.P.)
- Correspondence: (O.S.); (S.D.)
| | - Elena Shramova
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russia; (E.S.); (G.P.)
| | - Galina Proshkina
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russia; (E.S.); (G.P.)
| | - Sergey Deyev
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry RAS, 117997 Moscow, Russia; (E.S.); (G.P.)
- Center of Biomedical Engineering, Sechenov University, 119991 Moscow, Russia
- Research Centrum for Oncotheranostics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
- Correspondence: (O.S.); (S.D.)
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8
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Ciaffaglione V, Waghorn PA, Exner RM, Cortezon-Tamarit F, Godfrey SP, Sarpaki S, Quilter H, Dondi R, Ge H, Kociok-Kohn G, Botchway SW, Eggleston IM, Dilworth JR, Pascu SI. Structural Investigations, Cellular Imaging, and Radiolabeling of Neutral, Polycationic, and Polyanionic Functional Metalloporphyrin Conjugates. Bioconjug Chem 2021; 32:1374-1392. [PMID: 33525868 PMCID: PMC8299459 DOI: 10.1021/acs.bioconjchem.0c00691] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Over the past decade,
porphyrin derivatives have emerged as invaluable
synthetic building blocks and theranostic kits for the delivery of
cellular fluorescence imaging and photodynamic therapy. Tetraphenylporphyrin
(TPP), its metal complexes, and related derivatives have been investigated
for their use as dyes in histology and as components of multimodal
imaging probes. The photophysical properties of porphyrin–metal
complexes featuring radiometals have been a focus of our attention
for the realization of fluorescence imaging probes coupled with radioimaging
capabilities and therapeutic potential having “true”
theranostic promise. We report hereby on the synthesis, radiochemistry,
structural investigations, and preliminary in vitro and in vivo uptake studies on a range of functionalized
porphyrin-based derivatives. In pursuit of developing new porphyrin-based
probes for multimodality imaging applications, we report new functionalized
neutral, polycationic, and polyanionic porphyrins incorporating nitroimidazole
and sulfonamide moieties, which were used as targeting groups to improve
the notoriously poor pharmacokinetics of porphyrin tags. The resulting
functional metalloporphyrin species were stable under serum challenges
and the nitroimidazole and sulfonamide derivatives remained fluorescent,
allowing in vitro confocal studies and visualization
of the lysosomal uptake in a gallium(III) sulfonamide derivative.
The molecular structures of selected porphyrin derivatives were determined
by single crystal X-ray diffraction using synchrotron radiation. We
also investigated the nature of the emission/excitation behavior of
model functional porphyrins using in silico approaches
such as TD DFT in simple solvation models. The conjugation of porphyrins
with the [7-13] and [7-14] fragments of bombesin was also achieved,
to provide targeting of the gastrin releasing peptide receptor (GRPR).
Depending on the metal, probe conjugates of relevance for single photon
emission computed tomography (SPECT) or positron emission tomography
(PET) probes have been designed and tested hereby, using TPP and related
functional free base porphyrins as the bifunctional chelator synthetic
scaffold and 111In[In] or 68Ga[Ga], respectively,
as the central metal ions. Interestingly, for simple porphyrin conjugates
good radiochemical incorporation was obtained for both radiometals,
but the presence of peptides significantly diminished the radio-incorporation
yields. Although the gallium-68 radiochemistry of the bombesin conjugates
did not show radiochemical incorporation suitable for in vivo studies, likely because the presence of the peptide changed the
behavior of the TPP-NH2 synthon taken alone, the optical
imaging assays indicated that the conjugated peptide tags do mediate
uptake of the porphyrin units into cells.
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Affiliation(s)
- Valeria Ciaffaglione
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom
| | - Philip A Waghorn
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, United Kingdom
| | - Rüdiger M Exner
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom
| | | | - Samuel P Godfrey
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom
| | - Sophia Sarpaki
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom
| | - Helena Quilter
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom.,Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom.,Centre for Sustainable and Circular Technologies, University of Bath, Bath, BA2 7AY, United Kingdom
| | - Ruggero Dondi
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom
| | - Haobo Ge
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom
| | - Gabriele Kociok-Kohn
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom.,Material and Chemical Characterisation (MC2), University of Bath, Bath, BA2 7AY, United Kingdom
| | - Stanley W Botchway
- Research Complex at Harwell, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, OX11 0QX, United Kingdom
| | - Ian M Eggleston
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom
| | - Jonathan R Dilworth
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, United Kingdom
| | - Sofia I Pascu
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom.,Centre for Sustainable and Circular Technologies, University of Bath, Bath, BA2 7AY, United Kingdom
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9
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Tewari KM, Dondi R, Yaghini E, Pourzand C, MacRobert AJ, Eggleston IM. Peptide-targeted dendrimeric prodrugs of 5-aminolevulinic acid: A novel approach towards enhanced accumulation of protoporphyrin IX for photodynamic therapy. Bioorg Chem 2021; 109:104667. [PMID: 33611140 DOI: 10.1016/j.bioorg.2021.104667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 01/11/2021] [Accepted: 01/18/2021] [Indexed: 12/21/2022]
Abstract
Photodynamic therapy (PDT) is a promising approach for the targeted treatment of cancer and various other human disorders. An effective, clinically approved approach in PDT involves the administration of 5-aminolevulinic acid (ALA) to generate elevated levels of the natural photosensitiser protoporphyrin IX (PpIX). The development of prodrugs of ALA is of considerable interest as a means to enhance the efficiency and cell selectivity of PpIX accumulation for PDT applications. In this work a novel peptide-targeted dendrimeric prodrug of 5-aminolevulinic acid (ALA) 13 was synthesised which displays nine copies of ALA on a core structure that is linked to a homing peptide for targeted delivery to a specific cancer cell type. The synthesis was accomplished effectively via a flexible, modular solid phase and solution phase route, using a combination of solid phase peptide synthesis and copper-catalysed azide-alkyne cycloaddition chemistry. The prodrug system shows a sustained and enhanced production of protoporphyrin IX (PpIX) in the MDA-MB-231 cell line that over-expresses the epidernal growth factor receptor (EGFR+) in comparison to equimolar ALA and the corresponding non-targeted ALA dendrimer (nine copies of ALA). This study provides a proof of concept for the development of a new generation of prodrugs for ALA-based photodynamic therapy that can deliver an enhanced ALA payload to specific tissue types.
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Affiliation(s)
- K M Tewari
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK
| | - R Dondi
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK
| | - E Yaghini
- Division of Surgery and Interventional Science, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PE, UK
| | - C Pourzand
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK
| | - A J MacRobert
- Division of Surgery and Interventional Science, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PE, UK
| | - I M Eggleston
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK
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10
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Homsirikamol C, Suvanasuthi S, Viravaidya-Pasuwat K. Inclusion of IR-820 into Soybean-Phosphatides-Based Nanoparticles for Near-Infrared-Triggered Release and Endolysosomal Escape in HaCaT Keratinocytes at Insignificant Cytotoxic Level. Int J Nanomedicine 2020; 15:8717-8737. [PMID: 33192063 PMCID: PMC7654534 DOI: 10.2147/ijn.s267119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 09/22/2020] [Indexed: 01/15/2023] Open
Abstract
PURPOSE The degradation of drugs within endolysosomes has been widely addressed as a cause of poor bioavailability. One of the strategies to allow molecules to escape from a destructive fate is to introduce a photosensitizing moiety into a drug carrier enabling the permeabilization of endosomes and endolysosomes upon irradiation. This paper presents an alternative delivery nanosystem composed of cost-effective soybean phosphatides mixed with IR-820, a near-infrared (NIR) sensitizer, to load various active compounds and trigger an endolysosomal escape with a low cytotoxic effect. METHODS IR-820-incorporated phosphatides-based nanoparticles were formulated using a thin-film hydration method to encapsulate different molecular probes and a drug model. The nanoparticles were characterized in vitro using dynamic light scattering, transmission electron microscopy, as well as ultraviolet-visible and fluorescence spectroscopy techniques. The NIR-corresponding generation of the photochemical products, the content release, and the cytotoxicity toward the HaCaT keratinocyte cell line were evaluated. The cellular internalization and endolysosomal escape were monitored using a cytochemical marker and fluorescent probes with a colocalization analysis. RESULTS The IR-820-combined nanoparticles revealed the NIR-triggered changes in the singlet oxygen presence, nanoparticle architecture, and release rate without being cytotoxic. Additionally, the nanoplatform appeared to enhance cellular uptake of the macromolecules. The localization of the cytochemical marker and the colocalization analysis on the fluorescence signals of the encapsulated fluorophore and the lysosome-labeling reporter implied the transient endolysosomal escape of the cargo within the HaCaT cells after NIR irradiation. CONCLUSION The inclusion of IR-820 into a soybean-phosphatides base ingredient provides NIR responsiveness, particularly the endolysosomal escape of the payload, to the formulated nanoparticles, while preserving the beneficial properties as a drug carrier. This alternative delivery nanomedicine system has future potential to provide high bioavailability of cytosolic drugs utilizing time- and spatial-controllable NIR triggerability as well as the synergistic therapeutic effects with NIR-biomodulation.
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Affiliation(s)
- Chaiyarerk Homsirikamol
- Mammalian Cell Culture Laboratory, Biological Engineering Program, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand
| | - Saroj Suvanasuthi
- Hair Diseases and Hair Transplantation Division, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kwanchanok Viravaidya-Pasuwat
- Mammalian Cell Culture Laboratory, Biological Engineering Program, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand
- Department of Chemical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand
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11
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Mohammad Hadi L, Yaghini E, MacRobert AJ, Loizidou M. Synergy between Photodynamic Therapy and Dactinomycin Chemotherapy in 2D and 3D Ovarian Cancer Cell Cultures. Int J Mol Sci 2020; 21:E3203. [PMID: 32366058 PMCID: PMC7247344 DOI: 10.3390/ijms21093203] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/27/2020] [Accepted: 04/28/2020] [Indexed: 01/05/2023] Open
Abstract
In this study we explored the efficacy of combining low dose photodynamic therapy using a porphyrin photosensitiser and dactinomycin, a commonly used chemotherapeutic agent. The studies were carried out on compressed collagen 3D constructs of two human ovarian cancer cell lines (SKOV3 and HEY) versus their monolayer counterparts. An amphiphilc photosensitiser was employed, disulfonated tetraphenylporphine, which is not a substrate for ABC efflux transporters that can mediate drug resistance. The combination treatment was shown to be effective in both monolayer and 3D constructs of both cell lines, causing a significant and synergistic reduction in cell viability. Compared to dactinomycin alone or PDT alone, higher cell kill was found using 2D monolayer culture vs. 3D culture for the same doses. In 3D culture, the combination therapy resulted in 10 and 22 times higher cell kill in SKOV3 and HEY cells at the highest light dose compared to dactinomycin monotherapy, and 2.2 and 5.5 times higher cell kill than PDT alone. The combination of low dose PDT and dactinomycin appears to be a promising way to repurpose dactinomycin and widen its therapeutic applications.
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Affiliation(s)
- Layla Mohammad Hadi
- Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London, London NW3 2QG, UK; (E.Y.); (A.J.M.)
| | | | | | - Marilena Loizidou
- Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London, London NW3 2QG, UK; (E.Y.); (A.J.M.)
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12
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Lu JQ, Zhu ZN, Zheng YT, Shaw PC. Engineering of Ribosome-inactivating Proteins for Improving Pharmacological Properties. Toxins (Basel) 2020; 12:toxins12030167. [PMID: 32182799 PMCID: PMC7150887 DOI: 10.3390/toxins12030167] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/05/2020] [Accepted: 03/06/2020] [Indexed: 12/23/2022] Open
Abstract
Ribosome-inactivating proteins (RIPs) are N-glycosidases, which depurinate a specific adenine residue in the conserved α-sarcin/ricin loop (α-SRL) of rRNA. This loop is important for anchoring elongation factor (EF-G for prokaryote or eEF2 for eukaryote) in mRNA translocation. Translation is inhibited after the attack. RIPs therefore may have been applied for anti-cancer, and anti-virus and other therapeutic applications. The main obstacles of treatment with RIPs include short plasma half-life, non-selective cytotoxicity and antigenicity. This review focuses on the strategies used to improve the pharmacological properties of RIPs on human immunodeficiency virus (HIV) and cancers. Coupling with polyethylene glycol (PEG) increases plasma time and reduces antigenicity. RIPs conjugated with antibodies to form immunotoxins increase the selective toxicity to target cells. The prospects for future development on the engineering of RIPs for improving their pharmacological properties are also discussed.
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Affiliation(s)
- Jia-Qi Lu
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong 99077, China; (J.-Q.L.); (Z.-N.Z.)
| | - Zhen-Ning Zhu
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong 99077, China; (J.-Q.L.); (Z.-N.Z.)
| | - Yong-Tang Zheng
- Key Laboratory of Animal Models and Human Disease Mechanisms, National Kunming High level Biosafety Research Center for Non-human Primates, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, Yunnan, China;
| | - Pang-Chui Shaw
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong 99077, China; (J.-Q.L.); (Z.-N.Z.)
- Correspondence:
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13
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Jerjes W, Theodossiou TA, Hirschberg H, Høgset A, Weyergang A, Selbo PK, Hamdoon Z, Hopper C, Berg K. Photochemical Internalization for Intracellular Drug Delivery. From Basic Mechanisms to Clinical Research. J Clin Med 2020; 9:E528. [PMID: 32075165 DOI: 10.3390/jcm9020528] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/14/2020] [Accepted: 02/01/2020] [Indexed: 02/06/2023] Open
Abstract
Photochemical internalisation (PCI) is a unique intervention which involves the release of endocytosed macromolecules into the cytoplasmic matrix. PCI is based on the use of photosensitizers placed in endocytic vesicles that, following light activation, lead to rupture of the endocytic vesicles and the release of the macromolecules into the cytoplasmic matrix. This technology has been shown to improve the biological activity of a number of macromolecules that do not readily penetrate the plasma membrane, including type I ribosome-inactivating proteins (RIPs), gene-encoding plasmids, adenovirus and oligonucleotides and certain chemotherapeutics, such as bleomycin. This new intervention has also been found appealing for intracellular delivery of drugs incorporated into nanocarriers and for cancer vaccination. PCI is currently being evaluated in clinical trials. Data from the first-in-human phase I clinical trial as well as an update on the development of the PCI technology towards clinical practice is presented here.
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14
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Miyoshi Y, Kadono M, Okazaki S, Nishimura A, Kitamatsu M, Watanabe K, Ohtsuki T. Endosomal Escape of Peptide-Photosensitizer Conjugates Is Affected by Amino Acid Sequences near the Photosensitizer. Bioconjug Chem 2020; 31:916-922. [DOI: 10.1021/acs.bioconjchem.0c00046] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuichi Miyoshi
- Department of Medical Bioengineering, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Japan
| | - Maho Kadono
- Department of Medical Bioengineering, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Japan
| | - Shigetoshi Okazaki
- Preeminent Medical Photonics Education and Research Center, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu 431-3192, Japan
| | - Ayano Nishimura
- Department of Applied Chemistry, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Mizuki Kitamatsu
- Department of Applied Chemistry, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Kazunori Watanabe
- Department of Medical Bioengineering, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Japan
- Department of Interdisciplinary Science and Engineering in Health Systems, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Japan
| | - Takashi Ohtsuki
- Department of Medical Bioengineering, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Japan
- Department of Interdisciplinary Science and Engineering in Health Systems, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Japan
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15
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Muhammad K, Zhao J, Ullah I, Guo J, Ren XK, Feng Y. Ligand targeting and peptide functionalized polymers as non-viral carriers for gene therapy. Biomater Sci 2020; 8:64-83. [DOI: 10.1039/c9bm01112a] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Ligand targeting and peptide functionalized polymers serve as gene carriers for efficient gene delivery.
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Affiliation(s)
- Khan Muhammad
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P. R. China
| | - Jing Zhao
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P. R. China
| | - Ihsan Ullah
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P. R. China
| | - Jintang Guo
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P. R. China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Xiang-kui Ren
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P. R. China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Yakai Feng
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P. R. China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
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16
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Ma X, Chen L, Yang Y, Zhang W, Wang P, Zhang K, Zheng B, Zhu L, Sun Z, Zhang S, Guo Y, Liang M, Wang H, Tian J. An Artificial Intelligent Signal Amplification System for in vivo Detection of miRNA. Front Bioeng Biotechnol 2019; 7:330. [PMID: 31824932 PMCID: PMC6882290 DOI: 10.3389/fbioe.2019.00330] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 10/29/2019] [Indexed: 11/13/2022] Open
Abstract
MicroRNAs (miRNA) have been identified as oncogenic drivers and tumor suppressors in every major cancer type. In this work, we design an artificial intelligent signal amplification (AISA) system including double-stranded SQ (S, signal strand; Q, quencher strand) and FP (F, fuel strand; P, protect strand) according to thermodynamics principle for sensitive detection of miRNA in vitro and in vivo. In this AISA system for miRNA detection, strand S carries a quenched imaging marker inside the SQ. Target miRNA is constantly replaced by a reaction intermediate and circulatively participates in the reaction, similar to enzyme. Therefore, abundant fluorescent substances from S and SP are dissociated from excessive SQ for in vitro and in vivo visualization. The versatility and feasibility for disease diagnosis using this system were demonstrated by constructing two types of AISA system to detect Hsa-miR-484 and Hsa-miR-100, respectively. The minimum target concentration detected by the system in vitro (10 min after mixing) was 1/10th that of the control group. The precancerous lesions of liver cancer were diagnosed, and the detection accuracy were larger than 94% both in terms of location and concentration. The ability to establish this design framework for AISA system with high specificity provides a new way to monitor tumor progression and to assess therapeutic responses.
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Affiliation(s)
- Xibo Ma
- CAS Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, China.,School of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing, China
| | - Lei Chen
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University, Shanghai, China
| | - Yingcheng Yang
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University, Shanghai, China
| | - Weiqi Zhang
- School of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing, China.,National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Peixia Wang
- School of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing, China.,National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Kun Zhang
- CAS Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, China.,Department of Radiology, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Bo Zheng
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University, Shanghai, China
| | - Lin Zhu
- CAS Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, China.,School of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing, China
| | - Zheng Sun
- CAS Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, China.,School of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing, China
| | - Shuai Zhang
- CAS Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, China.,School of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing, China
| | - Yingkun Guo
- Department of Radiology, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Minmin Liang
- Experimental Center of Advanced Materials School of Materials Science & Engineering, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing, China
| | - Hongyang Wang
- International Co-operation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University, Shanghai, China
| | - Jie Tian
- CAS Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, China.,School of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing, China.,Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang University, Beijing, China
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17
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Xu J, Khan AR, Fu M, Wang R, Ji J, Zhai G. Cell-penetrating peptide: a means of breaking through the physiological barriers of different tissues and organs. J Control Release 2019; 309:106-124. [PMID: 31323244 DOI: 10.1016/j.jconrel.2019.07.020] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 07/15/2019] [Indexed: 12/24/2022]
Abstract
The selective infiltration of cell membranes and tissue barriers often blocks the entry of most active molecules. This natural defense mechanism prevents the invasion of exogenous substances and limits the therapeutic value of most available molecules. Therefore, it is particularly important to find appropriate ways of membrane translocation and therapeutic agent delivery to its target site. Cell penetrating peptides (CPPs) are a group of short peptides harnessed in this condition, possessing a significant capacity for membrane transduction and could be exploited to transfer various biologically active cargoes into the cells. Since their discovery, CPPs have been employed for delivery of a wide variety of therapeutic molecules to treat various disorders including cranial nerve involvement, ocular inflammation, myocardial ischemia, dermatosis and cancer. The promising results of CPPs-derived therapeutics in various tumor models demonstrated a potential and worthwhile scope of CPPs in chemotherapy. This review describes the detailed description of CPPs and CPPs-assisted molecular delivery against various tissues and organs disorders. An emphasis is focused on summarizing the novel insights and achievements of CPPs in surmounting the natural membrane barriers during the last 5 years.
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Affiliation(s)
- Jiangkang Xu
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Abdur Rauf Khan
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Manfei Fu
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Rujuan Wang
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Jianbo Ji
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Guangxi Zhai
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China.
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