1
|
Proctor CR, Taggart MG, O'Hagan BM, McCarron PA, McCarthy RR, Ternan NG. Furanone loaded aerogels are effective antibiofilm therapeutics in a model of chronic Pseudomonas aeruginosa wound infection. Biofilm 2023; 5:100128. [PMID: 37223215 PMCID: PMC10200818 DOI: 10.1016/j.bioflm.2023.100128] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/26/2023] [Accepted: 04/27/2023] [Indexed: 05/25/2023] Open
Abstract
Almost 80% of chronic wounds have a bacterial biofilm present. These wound biofilms are caused by a range of organisms and are often polymicrobial. Pseudomonas aeruginosa is one of the most common causative organisms in wound infections and readily forms biofilms in wounds. To coordinate this, P. aeruginosa uses a process known as quorum sensing. Structural homologues of the quorum sensing signalling molecules have been used to disrupt this communication and prevent biofilm formation by Pseudomonas. However, these compounds have not yet reached clinical use. Here, we report the production and characterisation of a lyophilised PVA aerogel for use in delivering furanones to wound biofilms. PVA aerogels successfully release a model antimicrobial and two naturally occurring furanones in an aqueous environment. Furanone loaded aerogels inhibited biofilm formation in P. aeruginosa by up to 98.80%. Further, furanone loaded aerogels successfully reduced total biomass of preformed biofilms. Treatment with a sotolon loaded aerogel yielded a 5.16 log reduction in viable biofilm bound cells in a novel model of chronic wound biofilm, equivalent to the current wound therapy Aquacel AG. These results highlight the potential utility of aerogels in drug delivery to infected wounds and supports the use of biofilm inhibitory compounds as wound therapeutics.
Collapse
Affiliation(s)
- Chris R. Proctor
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Northern Ireland, UK
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Northern Ireland, UK
- Division of Biosciences, Department of Life Sciences, College of Health and Life Sciences, Brunel University London, Uxbridge, UB8 3PH, UK
| | - Megan G. Taggart
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Northern Ireland, UK
| | - Barry M.G. O'Hagan
- Genomic Medicine Research Group, School of Biomedical Sciences, Ulster University, Northern Ireland, UK
| | - Paul A. McCarron
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Northern Ireland, UK
| | - Ronan R. McCarthy
- Division of Biosciences, Department of Life Sciences, College of Health and Life Sciences, Brunel University London, Uxbridge, UB8 3PH, UK
| | - Nigel G. Ternan
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Northern Ireland, UK
| |
Collapse
|
2
|
Shahcheraghi SH, Ayatollahi J, Lotfi M, Aljabali AAA, Al-Zoubi MS, Panda PK, Mishra V, Satija S, Charbe NB, Serrano-Aroca Á, Bahar B, Takayama K, Goyal R, Bhatia A, Almutary AG, Alnuqaydan AM, Mishra Y, Negi P, Courtney A, McCarron PA, Bakshi HA, Tambuwala MM. Gene Therapy for Neuropsychiatric Disorders: Potential Targets and Tools. CNS Neurol Disord Drug Targets 2023; 22:51-65. [PMID: 35249508 DOI: 10.2174/1871527321666220304153719] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/16/2022] [Accepted: 01/16/2022] [Indexed: 01/01/2023]
Abstract
Neuropsychiatric disorders that affect the central nervous system cause considerable pressures on the health care system and have a substantial economic burden on modern societies. The present treatments based on available drugs are mostly ineffective and often costly. The molecular process of neuropsychiatric disorders is closely connected to modifying the genetic structures inherited or caused by damage, toxic chemicals, and some current diseases. Gene therapy is presently an experimental concept for neurological disorders. Clinical applications endeavor to alleviate the symptoms, reduce disease progression, and repair defective genes. Implementing gene therapy in inherited and acquired neurological illnesses entails the integration of several scientific disciplines, including virology, neurology, neurosurgery, molecular genetics, and immunology. Genetic manipulation has the power to minimize or cure illness by inducing genetic alterations at endogenous loci. Gene therapy that involves treating the disease by deleting, silencing, or editing defective genes and delivering genetic material to produce therapeutic molecules has excellent potential as a novel approach for treating neuropsychiatric disorders. With the recent advances in gene selection and vector design quality in targeted treatments, gene therapy could be an effective approach. This review article will investigate and report the newest and the most critical molecules and factors in neuropsychiatric disorder gene therapy. Different genome editing techniques available will be evaluated, and the review will highlight preclinical research of genome editing for neuropsychiatric disorders while also evaluating current limitations and potential strategies to overcome genome editing advancements.
Collapse
Affiliation(s)
- Seyed H Shahcheraghi
- Department of Medical Genetics, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Infectious Diseases Research Center, Shahid Sadoughi Hospital, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Jamshid Ayatollahi
- Infectious Diseases Research Center, Shahid Sadoughi Hospital, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Marzieh Lotfi
- Abortion Research Center, Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Alaa A A Aljabali
- Department of Pharmaceutics & Pharmaceutical Technology, Yarmouk University, Irbid, Jordan
| | - Mazhar S Al-Zoubi
- Yarmouk University, Faculty of Medicine, Department of Basic Medical Sciences, Irbid, Jordan
| | - Pritam K Panda
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
| | - Vijay Mishra
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Saurabh Satija
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Nitin B Charbe
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M Health Science Center, Kingsville, TX 78363, USA
| | - Ángel Serrano-Aroca
- Biomaterials and Bioengineering Lab, Translational Research Centre San Alberto Magno, Catholic University of Valencia San Vicente Mártir, C/Guillem de Castro 94, 46001 Valencia, Spain
| | - Bojlul Bahar
- Nutrition Sciences and Applied Food Safety Studies, Research Centre for Global Development, School of Sport & Health Sciences, University of Central Lancashire, Preston, PR1 2HE, UK
| | - Kazuo Takayama
- Center for IPS Cell Research and Application, Kyoto University, Kyoto, 606-8397, Japan
| | - Rohit Goyal
- Neuropharmacology Laboratory, School of Pharmaceutical Sciences, Shoolini University, Post Box No. 9, Solan, Himachal Pradesh 173212, India
| | - Amit Bhatia
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University, Punjab 151001, India
| | - Abdulmajeed G Almutary
- Department of Medical Biotechnology, College of Applied Medical Sciences, Qassim University, Saudi Arabia
| | - Abdullah M Alnuqaydan
- Department of Medical Biotechnology, College of Applied Medical Sciences, Qassim University, Saudi Arabia
| | - Yachana Mishra
- Shri Shakti Degree College, Sankhahari, Ghatampur 209206, India
| | - Poonam Negi
- Shoolini University of Biotechnology and Management Sciences, Solan 173 212, India
| | - Aaron Courtney
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, County Londonderry, BT52 1SA, Northern Ireland, United Kingdom
| | - Paul A McCarron
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, County Londonderry, BT52 1SA, Northern Ireland, United Kingdom
| | - Hamid A Bakshi
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, County Londonderry, BT52 1SA, Northern Ireland, United Kingdom
| | - Murtaza M Tambuwala
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, County Londonderry, BT52 1SA, Northern Ireland, United Kingdom
| |
Collapse
|
3
|
El-Tanani M, Al Khatib AO, Aladwan SM, Abuelhana A, McCarron PA, Tambuwala MM. Importance of STAT3 signalling in cancer, metastasis and therapeutic interventions. Cell Signal 2022; 92:110275. [PMID: 35122990 DOI: 10.1016/j.cellsig.2022.110275] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [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: 12/22/2021] [Revised: 01/30/2022] [Accepted: 01/31/2022] [Indexed: 12/13/2022]
Abstract
The Signal Transducer and Activator of Transcription 3 (STAT3) protein is encoded on chromosome 17q21. The SH2 and the DNA binding domains are critical structural components of the protein, together with tyrosine and serine residues that initiate phosphorylation. STAT3 interacts with DNA directly and functions in cells as both a signal transducer and a transcription factor. Its cytoplasmic activation results in dimerisation and nuclear translocation, where it is involved in the transcription of a large number of target genes. STAT3 is hyperactive in cancer cells as a result of upstream STAT3 mutations or enhanced cytokine production in the tumour environment. The STAT3 signalling pathway promotes many hallmarks of carcinogenesis and metastasis, including enhanced cell proliferation and survival, as well as migration and invasion into the extracellular matrix. Recent investigations into novel STAT3-based therapies describe a range of innovative approaches, such as the use of novel oligonucleotide drugs. These limit STAT3 binding to its target genes by attaching to SH2 and DNA-binding domains. Yet, despite these significant steps in understanding the underpinning mechanisms, there are currently no therapeutic agents that addresses STAT3 signalling in a clinically relevant manner.
Collapse
Affiliation(s)
- Mohamed El-Tanani
- Pharmacological and Diagnostic Research Centre, Al-Ahliyya Amman University, Faculty of Pharmacy, Amman, Jordan; Centre for Cancer Research and Cell Biology, Queen's University Belfast, Grosvenor Road, Belfast BT12 6BJ, Northern Ireland, United Kingdom; Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, Bradford, United Kingdom.
| | - Arwa Omar Al Khatib
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Grosvenor Road, Belfast BT12 6BJ, Northern Ireland, United Kingdom
| | - Safwan Mahmoud Aladwan
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Grosvenor Road, Belfast BT12 6BJ, Northern Ireland, United Kingdom
| | - Ahmed Abuelhana
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine BT52 1SA, Northern Ireland, United Kingdom
| | - Paul A McCarron
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine BT52 1SA, Northern Ireland, United Kingdom
| | - Murtaza M Tambuwala
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine BT52 1SA, Northern Ireland, United Kingdom..
| |
Collapse
|
4
|
Lajczak-McGinley NK, Porru E, Fallon CM, Smyth J, Curley C, McCarron PA, Tambuwala MM, Roda A, Keely SJ. The secondary bile acids, ursodeoxycholic acid and lithocholic acid, protect against intestinal inflammation by inhibition of epithelial apoptosis. Physiol Rep 2021; 8:e14456. [PMID: 32562381 PMCID: PMC7305237 DOI: 10.14814/phy2.14456] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [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: 04/02/2020] [Revised: 04/08/2020] [Accepted: 04/09/2020] [Indexed: 12/17/2022] Open
Abstract
Increased epithelial permeability is a key feature of IBD pathogenesis and it has been proposed that agents which promote barrier function may be of therapeutic benefit. We have previously reported the secondary bile acid, ursodeoxycholic acid (UDCA), to be protective in a mouse model of colonic inflammation and that its bacterial metabolism is required for its beneficial effects. The current study aimed to compare the effects of UDCA, LCA, and a non‐metabolizable analog of UDCA, 6‐methyl‐UDCA (6‐MUDCA), on colonic barrier function and mucosal inflammation in a mouse model of colonic inflammation. Bile acids were administered daily to C57Bl6 mice by intraperitoneal injection. Colonic inflammation, induced by addition of DSS (2.5%) to the drinking water, was measured as disease activity index (DAI) and histological score. Epithelial permeability and apoptosis were assessed by measuring FITC‐dextran uptake and caspase‐3 cleavage, respectively. Cecal bile acids were measured by HPLC‐MS/MS. UDCA and LCA, but not 6‐MUDCA, were protective against DSS‐induced increases in epithelial permeability and colonic inflammation. Furthermore, UDCA and LCA inhibited colonic epithelial caspase‐3 cleavage both in DSS‐treated mice and in an in vitro model of cytokine‐induced epithelial injury. HPLC‐MS/MS analysis revealed UDCA administration to increase colonic LCA levels, whereas LCA administration did not alter UDCA levels. UDCA, and its primary metabolite, LCA, protect against intestinal inflammation in vivo, at least in part, by inhibition of epithelial apoptosis and promotion of barrier function. These data suggest that clinical trials of UDCA in IBD patients are warranted.
Collapse
Affiliation(s)
- Natalia K Lajczak-McGinley
- Department of Molecular Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin 9, Ireland
| | - Emanule Porru
- Department of Chemistry, University of Bologna, Bologna, Italy
| | - Ciara M Fallon
- Department of Molecular Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin 9, Ireland
| | - Jessica Smyth
- Department of Molecular Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin 9, Ireland
| | - Caitriona Curley
- Department of Molecular Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin 9, Ireland
| | - Paul A McCarron
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, Northern Ireland
| | - Murtaza M Tambuwala
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, Northern Ireland
| | - Aldo Roda
- Department of Chemistry, University of Bologna, Bologna, Italy.,INBB, National Institute of Bio structures and Biosystems, Rome, Italy
| | - Stephen J Keely
- Department of Molecular Medicine, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin 9, Ireland
| |
Collapse
|
5
|
Bakshi HA, Zoubi MSA, Faruck HL, Aljabali AAA, Rabi FA, Hafiz AA, Al-Batanyeh KM, Al-Trad B, Ansari P, Nasef MM, Charbe NB, Satija S, Mehta M, Mishra V, Gupta G, Abobaker S, Negi P, Azzouz IM, Dardouri AAK, Dureja H, Prasher P, Chellappan DK, Dua K, Silva MWD, Tanani ME, McCarron PA, M. Tambuwala M. Dietary Crocin is Protective in Pancreatic Cancer while Reducing Radiation-Induced Hepatic Oxidative Damage. Nutrients 2020; 12:nu12061901. [PMID: 32604971 PMCID: PMC7353213 DOI: 10.3390/nu12061901] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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: 04/28/2020] [Revised: 06/12/2020] [Accepted: 06/15/2020] [Indexed: 12/14/2022] Open
Abstract
Pancreatic cancer is one of the fatal causes of global cancer-related deaths. Although surgery and chemotherapy are standard treatment options, post-treatment outcomes often end in a poor prognosis. In the present study, we investigated anti-pancreatic cancer and amelioration of radiation-induced oxidative damage by crocin. Crocin is a carotenoid isolated from the dietary herb saffron, a prospect for novel leads as an anti-cancer agent. Crocin significantly reduced cell viability of BXPC3 and Capan-2 by triggering caspase signaling via the downregulation of Bcl-2. It modulated the expression of cell cycle signaling proteins P53, P21, P27, CDK2, c-MYC, Cyt-c and P38. Concomitantly, crocin treatment-induced apoptosis by inducing the release of cytochrome c from mitochondria to cytosol. Microarray analysis of the expression signature of genes induced by crocin showed a substantial number of genes involved in cell signaling pathways and checkpoints (723) are significantly affected by crocin. In mice bearing pancreatic tumors, crocin significantly reduced tumor burden without a change in body weight. Additionally, it showed significant protection against radiation-induced hepatic oxidative damage, reduced the levels of hepatic toxicity and preserved liver morphology. These findings indicate that crocin has a potential role in the treatment, prevention and management of pancreatic cancer.
Collapse
Affiliation(s)
- Hamid A. Bakshi
- School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine BT52 1SA, UK; (M.W.D.S.); (P.A.M.)
- Correspondence: or (H.A.B.); (H.L.F.); (M.M.T.)
| | - Mazhar S Al Zoubi
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid 566, Jordan;
| | - Hakkim L. Faruck
- Department of Mathematics and Sciences, College of Arts and Applied Sciences, Dhofar University, Salalah 211, Oman
- Correspondence: or (H.A.B.); (H.L.F.); (M.M.T.)
| | - Alaa A A Aljabali
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Yarmouk University, Irbid 566, Jordan;
| | - Firas A. Rabi
- Department of Clinical Sciences, Faculty of Medicine, Yarmouk University, Irbid 21163, Jordan;
| | - Amin A. Hafiz
- Department of Clinical Nutrition, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah 21421, Saudi Arabia;
| | - Khalid M Al-Batanyeh
- Department of Biological Sciences, Faculty of Science, Yarmouk University, Irbid 566, Jordan; (K.M.A.-B.); (B.A.-T.)
| | - Bahaa Al-Trad
- Department of Biological Sciences, Faculty of Science, Yarmouk University, Irbid 566, Jordan; (K.M.A.-B.); (B.A.-T.)
| | - Prawej Ansari
- School of Biomedical Sciences, Ulster University, Coleraine BT52 1SA, UK;
| | - Mohamed M. Nasef
- Department of Pharmacy and Biomedical Sciences, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield HD13DH, UK;
| | - Nitin B. Charbe
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Av. Libertador Bernardo O’Higgins, Santiago 340, Región Metropolitana, Chile;
| | - Saurabh Satija
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411, India; (S.S.); (M.M.); (V.M.)
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo, NSW 2007, Australia;
| | - Meenu Mehta
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411, India; (S.S.); (M.M.); (V.M.)
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo, NSW 2007, Australia;
| | - Vijay Mishra
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411, India; (S.S.); (M.M.); (V.M.)
| | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Mahal Road, Jaipur, Rajasthan 302017, India;
| | - Salem Abobaker
- Department of Gynecology, European Competence Center for Ovarian Cancer, Campus Virchow, Klinikum Charite-Universitatmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany;
| | - Poonam Negi
- School of Pharmaceutical Sciences, Shoolini University, Bajhol, Sultanpur, Solan, Himachal Pradesh 173229, India;
| | - Ibrahim M. Azzouz
- Department of Dermatology, Venerology, and Allergology, Charite-Universitatsmedizin Berlin, Corporate Member of Freie Universitat Berlin, Chariteplatz1, 10117 Berlin, Germany;
| | - Ashref Ali K Dardouri
- Department of Forensic Science, School of Applied Sciences, University of Huddersfield, Huddersfield HD13DH, UK;
| | - Harish Dureja
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana 124001, India;
| | - Parteek Prasher
- Department of Chemistry, University of Petroleum & Energy Studies, Dehradun 248007, India;
| | - Dinesh K. Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University, Kuala Lumpur 57000, Malaysia;
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo, NSW 2007, Australia;
- School of Pharmaceutical Sciences, Shoolini University, Bajhol, Sultanpur, Solan, Himachal Pradesh 173229, India;
| | - Mateus Webba Da Silva
- School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine BT52 1SA, UK; (M.W.D.S.); (P.A.M.)
| | - Mohamed El Tanani
- Pharmacological and Diagnostic Research Centre, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman 19328, Jordan;
| | - Paul A. McCarron
- School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine BT52 1SA, UK; (M.W.D.S.); (P.A.M.)
| | - Murtaza M. Tambuwala
- School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine BT52 1SA, UK; (M.W.D.S.); (P.A.M.)
- Correspondence: or (H.A.B.); (H.L.F.); (M.M.T.)
| |
Collapse
|
6
|
Hakkim FL, Bakshi HA, Khan S, Nasef MM, Farzand R, Sam S, Rashan L, Al-Baloshi MS, Abdo Hasson SSA, Jabri AA, McCarron PA, Tambuwala MM. Correction: Frankincense essential oil suppresses melanoma cancer through down regulation of Bcl-2/Bax cascade signaling and ameliorates heptotoxicity via phase I and II drug metabolizing enzymes. Oncotarget 2020; 11:2259-2261. [PMID: 32577169 PMCID: PMC7289534 DOI: 10.18632/oncotarget.27540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
[This corrects the article DOI: 10.18632/oncotarget.26930.].
Collapse
Affiliation(s)
- Faruck L Hakkim
- Frankincense Biodiversity Unit, Research Center, Dhofar University, Salalah, Oman.,Department of Mathematics and Sciences, College of Arts and Applied Sciences, Dhofar University, Salalah, Oman
| | - Hamid A Bakshi
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, United Kingdom.,Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA.,School of Pharmacy and Pharmaceutical Science, SAAD Centre for Pharmacy and Diabetes, Ulster University, Coleraine, County Londonderry, Northern Ireland, United Kingdom
| | - Shabia Khan
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - Mohamed M Nasef
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, United Kingdom
| | - Rabia Farzand
- Department of Clinical and Pharmaceutical Sciences, University of Hertfordshire, Hertfordshire, United Kingdom
| | - Smitha Sam
- Chemotherapy Unit, St. Jude Clinics-Center for Cancer Treatment, Pathanamthitta, Kerala, India
| | - Luay Rashan
- Frankincense Biodiversity Unit, Research Center, Dhofar University, Salalah, Oman
| | - Mohammed S Al-Baloshi
- Department of Microbiology and Immunology, College of Medicine and Health Sciences, Sultan Qaboos University, Al-Khoud, Muscat, Oman
| | - Sidgi Syed Anwar Abdo Hasson
- Department of Microbiology and Immunology, College of Medicine and Health Sciences, Sultan Qaboos University, Al-Khoud, Muscat, Oman
| | - Ali Al Jabri
- Department of Microbiology and Immunology, College of Medicine and Health Sciences, Sultan Qaboos University, Al-Khoud, Muscat, Oman
| | - Paul A McCarron
- School of Pharmacy and Pharmaceutical Science, SAAD Centre for Pharmacy and Diabetes, Ulster University, Coleraine, County Londonderry, Northern Ireland, United Kingdom
| | - Murtaza M Tambuwala
- School of Pharmacy and Pharmaceutical Science, SAAD Centre for Pharmacy and Diabetes, Ulster University, Coleraine, County Londonderry, Northern Ireland, United Kingdom
| |
Collapse
|
7
|
Proctor CR, McCarron PA, Ternan NG. Furanone quorum-sensing inhibitors with potential as novel therapeutics against Pseudomonas aeruginosa. J Med Microbiol 2020; 69:195-206. [PMID: 31971503 DOI: 10.1099/jmm.0.001144] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Micro-organisms use quorum sensing (QS), a cell density-dependent process, to communicate. This QS mode of interchange leads to the production of a variety of virulence factors, co-ordination of complex bacterial behaviours, such as swarming motility, degradation of host tissue and biofilm formation. QS is implicated in numerous human infections and consequently researchers have sought ways of effectively inhibiting the process in pathogenic bacteria. Two decades ago, furanones were the first class of chemical compounds identified as Pseudomonas aeruginosa QS inhibitors (QSIs). P. aeruginosa is a ubiquitous organism, capable of causing a wide range of infections in humans, including eye and ear infections, wound infections and potentially fatal bacteraemia and thus novel treatments against this organism are greatly needed. This review provides a brief background on QS and the use of furanones as QSIs. Based on the effectiveness of action, both in vivo and in vitro, we will explore the use of furanones as potential antimicrobial therapeutics and conclude with open questions.
Collapse
Affiliation(s)
- Chris R Proctor
- Nutrition Innovation Centre for Food and Health, School of Biomedical Sciences, Ulster University, Northern Ireland, UK.,School of Pharmacy and Pharmaceutical Sciences, Ulster University, Northern Ireland, UK
| | - Paul A McCarron
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Northern Ireland, UK
| | - Nigel G Ternan
- Nutrition Innovation Centre for Food and Health, School of Biomedical Sciences, Ulster University, Northern Ireland, UK
| |
Collapse
|
8
|
Charbe NB, Zacconi FC, Amnerkar N, Pardhi D, Shukla P, Mukattash TL, McCarron PA, Tambuwala MM. Emergence of Three Dimensional Printed Cardiac Tissue: Opportunities and Challenges in Cardiovascular Diseases. Curr Cardiol Rev 2019; 15:188-204. [PMID: 30648518 PMCID: PMC6719392 DOI: 10.2174/1573403x15666190112154710] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 12/28/2018] [Accepted: 01/02/2019] [Indexed: 01/01/2023] Open
Abstract
Three-dimensional (3D) printing, also known as additive manufacturing, was developed originally for engineering applications. Since its early advancements, there has been a relentless de-velopment in enthusiasm for this innovation in biomedical research. It allows for the fabrication of structures with both complex geometries and heterogeneous material properties. Tissue engineering using 3D bio-printers can overcome the limitations of traditional tissue engineering methods. It can match the complexity and cellular microenvironment of human organs and tissues, which drives much of the interest in this technique. However, most of the preliminary evaluations of 3D-printed tissues and organ engineering, including cardiac tissue, relies extensively on the lessons learned from tradi-tional tissue engineering. In many early examples, the final printed structures were found to be no bet-ter than tissues developed using traditional tissue engineering methods. This highlights the fact that 3D bio-printing of human tissue is still very much in its infancy and more work needs to be done to realise its full potential. This can be achieved through interdisciplinary collaboration between engi-neers, biomaterial scientists and molecular cell biologists. This review highlights current advance-ments and future prospects for 3D bio-printing in engineering ex vivo cardiac tissue and associated vasculature, such as coronary arteries. In this context, the role of biomaterials for hydrogel matrices and choice of cells are discussed. 3D bio-printing has the potential to advance current research signif-icantly and support the development of novel therapeutics which can improve the therapeutic out-comes of patients suffering fatal cardiovascular pathologies.
Collapse
Affiliation(s)
- Nitin B Charbe
- Departamento de Quimica Organica, Facultad de Quimica y de Farmacia, Pontificia Universidad Catolica de Chile, Av. Vicuna Mackenna 4860, Macul, Santiago 7820436, Chile.,Sri Adichunchunagiri College of Pharmacy, Sri Adichunchunagiri University, BG Nagar, Karnataka 571418, India
| | - Flavia C Zacconi
- Departamento de Quimica Organica, Facultad de Quimica y de Farmacia, Pontificia Universidad Catolica de Chile, Av. Vicuna Mackenna 4860, Macul, Santiago 7820436, Chile.,Institute of Biological and Medical Engineering, School of Engineering, Medicine and Biological Science, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Nikhil Amnerkar
- Adv V. R. Manohar Institute of Diploma in Pharmacy, Wanadongri, Hingna Road, Nagpur, Maharashtra 441110, India
| | - Dinesh Pardhi
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zheijiang University, Hangzhou 310027, China
| | - Priyank Shukla
- Northern Ireland Centre for Stratified Medicine, Biomedical Sciences Research Institute, Ulster University, C-TRIC Building, Altnagelvin Area Hospital, Glenshane Road, Derry/Londonderry, BT47 6SB, Northern Ireland, United Kingdom
| | - Tareq L Mukattash
- Department of Clinical Pharmacy Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Paul A McCarron
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, County Londonderry, BT52 1SA, Northern Ireland, United Kingdom
| | - Murtaza M Tambuwala
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, County Londonderry, BT52 1SA, Northern Ireland, United Kingdom
| |
Collapse
|
9
|
Tambuwala MM, Khan MN, Thompson P, McCarron PA. Albumin nano-encapsulation of caffeic acid phenethyl ester and piceatannol potentiated its ability to modulate HIF and NF-kB pathways and improves therapeutic outcome in experimental colitis. Drug Deliv Transl Res 2019; 9:14-24. [PMID: 30430451 PMCID: PMC6328632 DOI: 10.1007/s13346-018-00597-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [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] [Indexed: 12/12/2022]
Abstract
Hypoxia inducible factor and nuclear factor-kappa beta pathways have been proposed as therapeutic targets for several inflammatory diseases. Caffeic acid phenethyl ester (CAPE) and piceatannol (PIC) are natural anti-inflammatory compounds; however, poor bioavailability and limited understanding of biomolecular mechanistic limits its clinical use. The aims of this study are to enhance bioavailability and investigate their impact on nuclear p65 and HIF-1α for the first time in experimental colitis.Dextran sulphate sodium was used to induce colitis in mice and effect of either free CAPE/PIC or CAPE/PIC loaded albumin nanoparticles treatment was observed on disease development and levels of cellular p65 and HIF-1α.Our results indicate that albumin nano-encapsulation of CAPE/PIC not only enhances its anti-inflammatory potential but also potentiates its ability to effectively modulate inflammation related biomolecular pathways. Hence, combining nanotechnology with natural compounds could result in development of new therapeutic options for IBD.
Collapse
Affiliation(s)
- Murtaza M Tambuwala
- SAAD Centre for Pharmacy and Diabetes, School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine, County Londonderry, BT52 1SA, UK.
| | - Mohammed N Khan
- SAAD Centre for Pharmacy and Diabetes, School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine, County Londonderry, BT52 1SA, UK
| | - Paul Thompson
- School of Biomedical Sciences, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - Paul A McCarron
- SAAD Centre for Pharmacy and Diabetes, School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine, County Londonderry, BT52 1SA, UK
| |
Collapse
|
10
|
Tambuwala MM, Kesharwani P, Shukla R, Thompson PD, McCarron PA. Caffeic acid phenethyl ester (CAPE) reverses fibrosis caused by chronic colon inflammation in murine model of colitis. Pathol Res Pract 2018; 214:1909-1911. [DOI: 10.1016/j.prp.2018.08.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 08/10/2018] [Accepted: 08/23/2018] [Indexed: 01/31/2023]
|
11
|
Abdelkader DH, Tambuwala MM, Mitchell CA, Osman MA, El-Gizawy SA, Faheem AM, El-Tanani M, McCarron PA. Enhanced cutaneous wound healing in rats following topical delivery of insulin-loaded nanoparticles embedded in poly(vinyl alcohol)-borate hydrogels. Drug Deliv Transl Res 2018; 8:1053-1065. [PMID: 29971752 PMCID: PMC6133079 DOI: 10.1007/s13346-018-0554-0] [Citation(s) in RCA: 29] [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] [Indexed: 12/31/2022]
Abstract
Insulin plays an important role in the wound healing process, but its method of delivery to the wound bed and subsequent effect on rate of healing is less well investigated. In this study, we evaluated the therapeutic effectiveness of topical human insulin delivery using a nanoparticulate delivery system suspended in a structured hydrogel vehicle. Poly(lactide-co-glycolide) (PLGA) nanoparticles (NP) of 202.6 nm diameter and loaded with 33.86 μg insulin per milligram of polymer were formulated using a modified double-emulsion solvent evaporation technique and dispersed in a dilatant hydrogel (poly(vinyl alcohol)-borate). Importantly, this hydrogel formulation was used to achieve ultimate contact with the wound bed. A comparison of wound healing rates following local administration of insulin in the free and nanoencapsulated forms was performed in diabetic and healthy rats. In non-diabetic rats, there was no significant difference between healing observed in control and wounds treated with free insulin (p > 0.05), whereas treatment with insulin encapsulated within PLGA NP showed a significant difference (p < 0.001). In diabetic cohorts, both free insulin and nanoencapsulated insulin induced significant improvement in wound healing when compared to controls, with better percentage wound injury indices observed with the colloidal formulation. At day 10 of the experiment, the difference between percentage wound injury indices of insulin-PLGA NP and free insulin comparing to their controls were 29.15 and 12.16%, respectively. These results support strongly the potential of insulin-loaded colloidal carriers for improved wound healing when delivered using dilatant hydrogel formulations.
Collapse
Affiliation(s)
- Dalia H Abdelkader
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Cromore Road, Coleraine, Co., Londonderry, BT52 1SA, UK
- Faculty of Pharmacy, Pharmaceutical Technology Department, Tanta University, Tanta, 31111, Egypt
| | - Murtaza M Tambuwala
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Cromore Road, Coleraine, Co., Londonderry, BT52 1SA, UK
| | - Christopher A Mitchell
- School of Biomedical Sciences, Ulster University, Cromore Road, Coleraine Co., Londonderry, BT52 1SA, UK
| | - Mohamed A Osman
- Faculty of Pharmacy, Pharmaceutical Technology Department, Tanta University, Tanta, 31111, Egypt
| | - Sanaa A El-Gizawy
- Faculty of Pharmacy, Pharmaceutical Technology Department, Tanta University, Tanta, 31111, Egypt
| | - Ahmed M Faheem
- Sunderland Pharmacy School, University of Sunderland, Sunderland, SR1 3SD, UK
| | - Mohamed El-Tanani
- Institute of Cancer Therapeutics, University of Bradford, Bradford, West Yorkshire, BD7 1DP, UK
| | - Paul A McCarron
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Cromore Road, Coleraine, Co., Londonderry, BT52 1SA, UK.
| |
Collapse
|
12
|
Haggag YA, Osman MA, El-Gizawy SA, Goda AE, Shamloula MM, Faheem AM, McCarron PA. Polymeric nano-encapsulation of 5-fluorouracil enhances anti-cancer activity and ameliorates side effects in solid Ehrlich Carcinoma-bearing mice. Biomed Pharmacother 2018; 105:215-224. [DOI: 10.1016/j.biopha.2018.05.124] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/23/2018] [Accepted: 05/23/2018] [Indexed: 11/26/2022] Open
|
13
|
Khan MN, Haggag YA, Lane ME, McCarron PA, Tambuwala MM. Polymeric Nano-Encapsulation of Curcumin Enhances its Anti-Cancer Activity in Breast (MDA-MB231) and Lung (A549) Cancer Cells Through Reduction in Expression of HIF-1α and Nuclear p65 (Rel A). Curr Drug Deliv 2018; 15:286-295. [PMID: 29065834 DOI: 10.2174/1567201814666171019104002] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [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: 04/06/2017] [Revised: 08/25/2017] [Accepted: 10/15/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND The anti-cancer potential of curcumin, a natural NFκβ inhibitor, has been reported extensively in breast, lung and other cancers. In vitro and in vivo studies indicate that the therapeutic efficacy of curcumin is enhanced when formulated in a nanoparticulate carrier. However, the mechanism of action of curcumin at the molecular level in the hypoxic tumour micro-environment is not fully understood. Hence, the aim of our study was to investigate the mechanism of action of curcumin formulated as nanoparticles in in vitro models of breast and lung cancer under an hypoxic microenvironment. METHODS Biodegradable poly(lactic-co-glycolic acid) PLGA nanoparticles (NP), loaded with curcumin (cur-PLGA-NP), were fabricated using a solvent evaporation technique to overcome solubility issues and to facilitate intracellular curcumin delivery. Cytotoxicity of free curcumin and cur-PLGA-NP was evaluated in MDA-MB-231 and A549 cell lines using migration, invasion and colony formation assays. All treatments were performed under an hypoxic micro-environment and whole cell lysates from controls and test groups were used to determine the expression of HIF-1α and p65 levels using ELISA assays. RESULTS A ten-fold increase in solubility, three-fold increase in anti-cancer activity and a significant reduction in the levels of cellular HIF-1α and nuclear p65 (Rel A) were observed for cur-PLGA-NP, when compared to free curcumin. CONCLUSION Our findings indicate that curcumin can effectively lower the elevated levels of HIF-1α and nuclear p65 (Rel A) in breast and lung cancer cells under an hypoxic tumour micro-environment when delivered in nanoparticulate form. This applied means of colloidal delivery could explain the improved anti-cancer efficacy of curcumin and has further potential applications in enhancing the activity of anti-cancer agents of low solubility.
Collapse
Affiliation(s)
- Mohammed N Khan
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Cromore Road, Coleraine, Co. Londonderry BT52 1SA, United Kingdom
| | - Yusuf A Haggag
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Tanta, Tanta, Egypt
| | - Majella E Lane
- UCL School of Pharmacy, 29-39 Brunswick Square, London, WC1N 1AX, United Kingdom
| | - Paul A McCarron
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Cromore Road, Coleraine, Co. Londonderry BT52 1SA, United Kingdom
| | - Murtaza M Tambuwala
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Cromore Road, Coleraine, Co. Londonderry BT52 1SA, United Kingdom
| |
Collapse
|
14
|
Abdelkader DH, Osman MA, El-Gizawy SA, Hawthorne SJ, Faheem AM, McCarron PA. Effect of poly(ethylene glycol) on insulin stability and cutaneous cell proliferation in vitro following cytoplasmic delivery of insulin-loaded nanoparticulate carriers – A potential topical wound management approach. Eur J Pharm Sci 2018; 114:372-384. [DOI: 10.1016/j.ejps.2017.12.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 12/19/2017] [Accepted: 12/21/2017] [Indexed: 12/14/2022]
|
15
|
Irwin N, Burnett KM, McCarron PA. Association between attendance and overall academic performance on a module within a professional pharmacy degree. Curr Pharm Teach Learn 2018; 10:396-401. [PMID: 29764646 DOI: 10.1016/j.cptl.2017.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 08/09/2017] [Accepted: 11/23/2017] [Indexed: 06/08/2023]
Abstract
BACKGROUND AND PURPOSE As the higher education (HE) classroom begins to adopt newer internet-based technologies, the relationship between attendance and performance needs to be re-evaluated, particularly for professional degree courses such as pharmacy. In the present study, we aimed to establish if an association exists between attendance at all timetabled classes and academic performance, in a Clinical Pharmacology and Therapeutics (CPT) module, as part of the Master of Pharmacy (MPharm) degree course at Ulster University. EDUCATIONAL ACTIVITY AND SETTING Data on attendance, final examination and coursework performance were collected over two academic years (2013-14 and 2014-15) of the CPT module at Ulster. In total 67 students were analysed. The MPharm degree at Ulster University implements an attendance policy, both as a pastoral support tool and to reinforce the need for professional conduct as a pharmacist. FINDINGS Student (2013-14 and 2014-15, n = 35 and 32, respectively) attendance on the module across both year groups was approximately 80%. We observed positive, and statistically significant relationships between attendance and performance on the examination, and especially in the coursework elements of the module. Student failure (below 40%) in the final examination was linked to attendance below an 80% threshold in nine of 12 cases. Reasons for not attending class varied, but illness was unquestionably the most commonly cited extenuation. DISCUSSION Taken together, these data confirm a convincing association between student attendance and academic achievement. SUMMARY Our studies promote the use of attendance monitoring policies for professional degree courses such as pharmacy.
Collapse
Affiliation(s)
- Nigel Irwin
- SAAD Centre for Pharmacy and Diabetes, University of Ulster, Coleraine, Northern Ireland BT52 1SA, United Kingdom.
| | - Kathryn M Burnett
- SAAD Centre for Pharmacy and Diabetes, University of Ulster, Coleraine, Northern Ireland BT52 1SA, United Kingdom.
| | - Paul A McCarron
- SAAD Centre for Pharmacy and Diabetes, University of Ulster, Coleraine, Northern Ireland BT52 1SA, United Kingdom.
| |
Collapse
|
16
|
Abdelkader DH, El-Gizawy SA, Faheem AM, McCarron PA, Osman MA. Effect of process variables on formulation, in-vitro characterisation and subcutaneous delivery of insulin PLGA nanoparticles: An optimisation study. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2017.10.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
17
|
Khan MN, Lane ME, McCarron PA, Tambuwala MM. Caffeic acid phenethyl ester is protective in experimental ulcerative colitis via reduction in levels of pro-inflammatory mediators and enhancement of epithelial barrier function. Inflammopharmacology 2017; 26:561-569. [PMID: 28528363 PMCID: PMC5859149 DOI: 10.1007/s10787-017-0364-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [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: 04/06/2017] [Accepted: 05/15/2017] [Indexed: 12/26/2022]
Abstract
Background Inhibition of the nuclear factor kappa beta (NF-κβ) pathway has been proposed as a therapeutic target due to its key role in the expression of pro-inflammatory genes, including pro-inflammatory cytokines, chemokines, and adhesion molecules. Caffeic acid phenethyl ester (CAPE) is a naturally occurring anti-inflammatory agent, found in propolis, and has been reported as a specific inhibitor of NF-κβ. However, the impact of CAPE on levels of myeloperoxidases (MPO) and pro-inflammatory cytokines during inflammation is not clear. The aims of this study were to investigate the protective efficacy of CAPE in the mouse model of colitis and determine its effect on MPO activity, pro-inflammatory cytokines levels, and intestinal permeability. Method Dextran sulphate sodium was administered in drinking water to induce colitis in C57/BL6 mice before treatment with intraperitoneal administration of CAPE (30 mg kg−1 day−1). Disease activity index (DAI) score, colon length and tissue histology levels of MPO, pro-inflammatory cytokines, and intestinal permeability were observed. Results CAPE-treated mice had lower DAI and tissue inflammation scores, with improved epithelial barrier protection and significant reduction in the level of MPO and pro-inflammatory cytokines. Conclusion Our results show that CAPE is effective in suppressing inflammation-triggered MPO activity and pro-inflammatory cytokines production while enhancing epithelial barrier function in experimental colitis. Thus, we conclude that CAPE could be a potential therapeutic agent for further clinical investigations for treatment of inflammatory bowel diseases in humans. Electronic supplementary material The online version of this article (doi:10.1007/s10787-017-0364-x) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Mohammed N Khan
- SAAD Centre for Pharmacy and Diabetes, School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine, County Londonderry, BT52 1SA, Northern Ireland, UK
| | - Majella E Lane
- UCL School of Pharmacy, 29-39 Brunswick Square, London, WC1N 1AX, UK
| | - Paul A McCarron
- SAAD Centre for Pharmacy and Diabetes, School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine, County Londonderry, BT52 1SA, Northern Ireland, UK
| | - Murtaza M Tambuwala
- SAAD Centre for Pharmacy and Diabetes, School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine, County Londonderry, BT52 1SA, Northern Ireland, UK.
| |
Collapse
|
18
|
Abstract
Orally administered solid dosage forms currently dominate over all other dosage forms and routes of administrations. However, human gastrointestinal tract (GIT) poses a number of obstacles to delivery of the drugs to the site of interest and absorption in the GIT. Pharmaceutical scientists worldwide have been interested in colon drug delivery for several decades, not only for the delivery of the drugs for the treatment of colonic diseases such as ulcerative colitis and colon cancer but also for delivery of therapeutic proteins and peptides for systemic absorption. Despite extensive research in the area of colon targeted drug delivery, we have not been able to come up with an effective way of delivering drugs to the colon. The current tablets designed for colon drug release depend on either pH-dependent or time-delayed release formulations. During ulcerative colitis the gastric transit time and colon pH-levels is constantly changing depending on whether the patient is having a relapse or under remission. Hence, the current drug delivery system to the colon is based on one-size-fits-all. Fails to effectively deliver the drugs locally to the colon for colonic diseases and delivery of therapeutic proteins and peptides for systemic absorption from the colon. Hence, to overcome the current issues associated with colon drug delivery, we need to provide the patients with personalized tablets which are specifically designed to match the individual's gastric transit time depending on the disease state. Three-dimensional (3D) printing (3DP) technology is getting cheaper by the day and bespoke manufacturing of 3D-printed tablets could provide the solutions in the form of personalized colon drug delivery system. This review provides a bird's eye view of applications and current advances in pharmaceutical 3DP with emphasis on the development of colon targeted drug delivery systems.
Collapse
Affiliation(s)
- Nitin B. Charbe
- Unit of Clinical Pharmacology, Luigi Sacco University Hospital, University of Milan, Milan, Italy
| | - Paul A. McCarron
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Coleraine, Co. Londonderry, United Kingdom
| | | | - Murtaza M. Tambuwala
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Coleraine, Co. Londonderry, United Kingdom
| |
Collapse
|
19
|
Charbe NB, McCarron PA, Lane ME, Tambuwala MM. Application of three-dimensional printing for colon targeted drug delivery systems. Int J Pharm Investig 2017. [PMID: 28929046 DOI: 10.4103/jphi.jphi] [Citation(s) in RCA: 2] [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] [Indexed: 04/15/2023] Open
Abstract
Orally administered solid dosage forms currently dominate over all other dosage forms and routes of administrations. However, human gastrointestinal tract (GIT) poses a number of obstacles to delivery of the drugs to the site of interest and absorption in the GIT. Pharmaceutical scientists worldwide have been interested in colon drug delivery for several decades, not only for the delivery of the drugs for the treatment of colonic diseases such as ulcerative colitis and colon cancer but also for delivery of therapeutic proteins and peptides for systemic absorption. Despite extensive research in the area of colon targeted drug delivery, we have not been able to come up with an effective way of delivering drugs to the colon. The current tablets designed for colon drug release depend on either pH-dependent or time-delayed release formulations. During ulcerative colitis the gastric transit time and colon pH-levels is constantly changing depending on whether the patient is having a relapse or under remission. Hence, the current drug delivery system to the colon is based on one-size-fits-all. Fails to effectively deliver the drugs locally to the colon for colonic diseases and delivery of therapeutic proteins and peptides for systemic absorption from the colon. Hence, to overcome the current issues associated with colon drug delivery, we need to provide the patients with personalized tablets which are specifically designed to match the individual's gastric transit time depending on the disease state. Three-dimensional (3D) printing (3DP) technology is getting cheaper by the day and bespoke manufacturing of 3D-printed tablets could provide the solutions in the form of personalized colon drug delivery system. This review provides a bird's eye view of applications and current advances in pharmaceutical 3DP with emphasis on the development of colon targeted drug delivery systems.
Collapse
Affiliation(s)
- Nitin B Charbe
- Unit of Clinical Pharmacology, Luigi Sacco University Hospital, University of Milan, Milan, Italy
| | - Paul A McCarron
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Coleraine, Co. Londonderry, United Kingdom
| | | | - Murtaza M Tambuwala
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Coleraine, Co. Londonderry, United Kingdom
| |
Collapse
|
20
|
Haggag YA, Faheem AM, Tambuwala MM, Osman MA, El-Gizawy SA, O’Hagan B, Irwin N, McCarron PA. Effect of poly(ethylene glycol) content and formulation parameters on particulate properties and intraperitoneal delivery of insulin from PLGA nanoparticles prepared using the double-emulsion evaporation procedure. Pharm Dev Technol 2017; 23:370-381. [DOI: 10.1080/10837450.2017.1295066] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Yusuf A. Haggag
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Coleraine, Co. Londonderry, UK
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Tanta, Tanta, Egypt
| | - Ahmed M. Faheem
- Department of Pharmacy, Health and Well-being, University of Sunderland, Sunderland, UK
| | - Murtaza M. Tambuwala
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Coleraine, Co. Londonderry, UK
| | - Mohamed A. Osman
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Tanta, Tanta, Egypt
| | - Sanaa A. El-Gizawy
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Tanta, Tanta, Egypt
| | - Barry O’Hagan
- School of Biomedical Sciences, Ulster University, Cromore Road, Coleraine, Co. Londonderry, UK
| | - Nigel Irwin
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Coleraine, Co. Londonderry, UK
| | - Paul A. McCarron
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Coleraine, Co. Londonderry, UK
| |
Collapse
|
21
|
Charbe N, McCarron PA, Tambuwala MM. Three-dimensional bio-printing: A new frontier in oncology research. World J Clin Oncol 2017; 8:21-36. [PMID: 28246583 PMCID: PMC5309712 DOI: 10.5306/wjco.v8.i1.21] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 11/02/2016] [Accepted: 12/09/2016] [Indexed: 02/06/2023] Open
Abstract
Current research in oncology deploys methods that rely principally on two-dimensional (2D) mono-cell cultures and animal models. Although these methodologies have led to significant advancement in the development of novel experimental therapeutic agents with promising anticancer activity in the laboratory, clinicians still struggle to manage cancer in the clinical setting. The disappointing translational success is attributable mainly to poor representation and recreation of the cancer microenvironment present in human neoplasia. Three-dimensional (3D) bio-printed models could help to simulate this micro-environment, with recent bio-printing of live human cells demonstrating that effective in vitro replication is achievable. This literature review outlines up-to-date advancements and developments in the use of 3D bio-printed models currently being used in oncology research. These innovative advancements in 3D bio-printing open up a new frontier for oncology research and could herald an era of progressive clinical cancer therapeutics.
Collapse
|
22
|
Haggag YA, Matchett KB, Dakir EH, Buchanan P, Osman MA, Elgizawy SA, El-Tanani M, Faheem AM, McCarron PA. Nano-encapsulation of a novel anti-Ran-GTPase peptide for blockade of regulator of chromosome condensation 1 (RCC1) function in MDA-MB-231 breast cancer cells. Int J Pharm 2017; 521:40-53. [PMID: 28163220 DOI: 10.1016/j.ijpharm.2017.02.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [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: 12/20/2016] [Revised: 01/31/2017] [Accepted: 02/01/2017] [Indexed: 01/07/2023]
Abstract
Ran is a small ras-related GTPase and is highly expressed in aggressive breast carcinoma. Overexpression induces malignant transformation and drives metastatic growth. We have designed a novel series of anti-Ran-GTPase peptides, which prevents Ran hydrolysis and activation, and although they display effectiveness in silico, peptide activity is suboptimal in vitro due to reduced bioavailability and poor delivery. To overcome this drawback, we delivered an anti-Ran-GTPase peptide using encapsulation in PLGA-based nanoparticles (NP). Formulation variables within a double emulsion solvent evaporation technique were controlled to optimise physicochemical properties. NP were spherical and negatively charged with a mean diameter of 182-277nm. Peptide integrity and stability were maintained after encapsulation and release kinetics followed a sustained profile. We were interested in the relationship between cellular uptake and poly(ethylene glycol) (PEG) in the NP matrix, with results showing enhanced in vitro uptake with increasing PEG content. Peptide-loaded, pegylated (10% PEG)-PLGA NP induced significant cytotoxic and apoptotic effects in MDA-MB-231 breast cancer cells, with no evidence of similar effects in cells pulsed with free peptide. Western blot analysis showed that encapsulated peptide interfered with the proposed signal transduction pathway of the Ran gene. Our novel blockade peptide prevented Ran activation by blockage of regulator of chromosome condensation 1 (RCC1) following peptide release directly in the cytoplasm once endocytosis of the peptide-loaded nanoparticle has occurred. RCC1 blockage was effective only when a nanoparticulate delivery approach was adopted.
Collapse
Affiliation(s)
- Yusuf A Haggag
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Cromore Road, Coleraine, Co. Londonderry, BT52 1SA, UK; Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Tanta, Tanta, Egypt
| | - Kyle B Matchett
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast BT9 7BL, UK
| | - El-Habib Dakir
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast BT9 7BL, UK; Institute of Cancer Therapeutics, University of Bradford, Bradford, UK
| | - Paul Buchanan
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast BT9 7BL, UK
| | - Mohammed A Osman
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Tanta, Tanta, Egypt
| | - Sanaa A Elgizawy
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Tanta, Tanta, Egypt
| | - Mohamed El-Tanani
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast BT9 7BL, UK; Institute of Cancer Therapeutics, University of Bradford, Bradford, UK; IDT (Imhotep Diagnostics and Therapeutics), Europa Tool House, Springbank, Industrial Estate, Dunmurry, Northern Ireland, UK
| | - Ahmed M Faheem
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Tanta, Tanta, Egypt; Sunderland Pharmacy School, Department of Pharmacy, Health and Well Being, University of Sunderland, Sunderland SR1 3SD, UK
| | - Paul A McCarron
- School of Pharmacy and Pharmaceutical Sciences, Saad Centre for Pharmacy and Diabetes, Ulster University, Cromore Road, Coleraine, Co. Londonderry, BT52 1SA, UK.
| |
Collapse
|
23
|
Chan KK, Matchett KB, McEnhill PM, Dakir EH, McMullin MF, El-Tanani Y, Patterson L, Faheem A, Rudland PS, McCarron PA, El-Tanani M. Protein deregulation associated with breast cancer metastasis. Cytokine Growth Factor Rev 2015; 26:415-23. [PMID: 26088937 DOI: 10.1016/j.cytogfr.2015.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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: 04/17/2015] [Accepted: 05/20/2015] [Indexed: 12/20/2022]
Abstract
Breast cancer is one of the most prevalent malignancies worldwide. It consists of a group of tumor cells that have the ability to grow uncontrollably, overcome replicative senescence (tumor progression) and metastasize within the body. Metastases are processes that consist of an array of complex gene dysregulation events. Although these processes are still not fully understood, the dysregulation of a number of key proteins must take place if the tumor cells are to disseminate and metastasize. It is now widely accepted that future effective and innovative treatments of cancer metastasis will have to encompass all the major components of malignant transformation. For this reason, much research is now being carried out into the mechanisms that govern the malignant transformation processes. Recent research has identified key genes involved in the development of metastases, as well as their mechanisms of action. A detailed understanding of the encoded proteins and their interrelationship generates the possibility of developing novel therapeutic approaches. This review will focus on a select group of proteins, often deregulated in breast cancer metastasis, which have shown therapeutic promise, notably, EMT, E-cadherin, Osteopontin, PEA3, Transforming Growth Factor Beta (TGF-β) and Ran.
Collapse
Affiliation(s)
- Ka Kui Chan
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast BT9 7BL, United Kingdom; Department of Pathology, The University of Hong Kong , Hong Kong Special Administrative Region
| | - Kyle B Matchett
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast BT9 7BL, United Kingdom
| | - Paul M McEnhill
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast BT9 7BL, United Kingdom
| | - El Habib Dakir
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast BT9 7BL, United Kingdom
| | - Mary Frances McMullin
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast BT9 7BL, United Kingdom
| | - Yahia El-Tanani
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast BT9 7BL, United Kingdom
| | - Laurence Patterson
- Institute of Cancer Therapeutics, University of Bradford, Bradford, West Yorkshire BD7 1DP, United Kingdom
| | - Ahmed Faheem
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Cromore Road, Coleraine BT52 1SA, United Kingdom
| | - Philip S Rudland
- Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB, United Kingdom
| | - Paul A McCarron
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Cromore Road, Coleraine BT52 1SA, United Kingdom
| | - Mohamed El-Tanani
- Institute of Cancer Therapeutics, University of Bradford, Bradford, West Yorkshire BD7 1DP, United Kingdom.
| |
Collapse
|
24
|
Eng M, Elkordy AA, McCarron PA, Elkordy EA, Faheem A. Physical Characterisation as an Insight into a Gene Delivery System Containing Cyclodextrins with Pluronic®-F127 and Folic acid as Non-Viral Vectors. Curr Pharm Biotechnol 2014; 15:712-26. [PMID: 25158973 DOI: 10.2174/1389201015666140827102134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 07/31/2014] [Accepted: 08/18/2014] [Indexed: 11/22/2022]
Abstract
Gene delivery into cells offers opportunities to treat various human genetic diseases. Effective gene delivery is dependent on its stability and ability to transfect across cells. DNA is susceptible to enzymatic degradation and its negatively charge are barriers towards successful transfection. DNA has to be protected from degradation and neutralised. Non-viral vectors are preferred carrier systems, therefore, the use of cyclodextrins with Pluronic(®)-F127 and folic acid at different concentrations to stabilise the formulation was investigated. Formulations were characterised in fresh and freeze dried forms. DNA stability in formulations was tested by determining the stability of DNA against enzymatic degradation. Degree of DNA inclusion into cyclodextrins was investigated using fluorescence spectroscopy. Thermal behaviour was studied using Differential Scanning Calorimetry (DSC). Incorporation of Pluronic(®)-F127 produced most stable formulations regarding enzymatic degradation. These formulations show high percentage inclusion. Shift of peaks in FTIR data, appearance of uniform particulate as detected by SEM and changing in the denaturation temperature as demonstrated by DSC data for Pluronic(®)-F127 containing formulations confirm clear interaction between Pluronic(®)-F127 and cyclodextrin/ DNA complex. It was noted that γ-cyclodextrin provide better protection and inclusion compared to β-cyclodextrin. Pluronic(®)-F127 with cyclodextrins is a promising combination to improve stability.
Collapse
Affiliation(s)
| | | | | | - Eman A Elkordy
- Sciences Complex, City Campus, Chester Road, Sunderland, SR1 3SD, UK.
| | | |
Collapse
|
25
|
Jenkins MG, Murphy DJ, Little C, McDonald J, McCarron PA. A non-inferiority randomized controlled trial comparing the clinical effectiveness of anesthesia obtained by application of a novel topical anesthetic putty with the infiltration of lidocaine for the treatment of lacerations in the emergency department. Ann Emerg Med 2014; 63:704-10. [PMID: 24439713 DOI: 10.1016/j.annemergmed.2013.12.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 11/27/2013] [Accepted: 12/05/2013] [Indexed: 11/18/2022]
Abstract
STUDY OBJECTIVE We test the hypothesis that anesthesia, measured as pain scores, induced by a novel topical anesthetic putty is non-inferior (margin=1.3) to that provided by conventional lidocaine infiltration for the repair of lacerations. METHODS A randomized controlled trial was conducted in the emergency department (ED) of a local hospital. Participants were randomly allocated to receive either infiltration anesthesia or topical anesthetic putty as per the trial protocol. Pain scores were recorded 15 minutes after infiltration and 30 minutes after topical anesthetic putty application. Median pain scores were compared between groups. Wound evaluation scores were conducted after 7 to 10 days and adverse events were monitored for both groups of participants throughout the study. RESULTS One hundred and ten participants were enrolled in the study, with 56 receiving infiltration and 54 receiving topical anesthetic putty. The median difference between the pain scores of the 2 groups was 0 (95% confidence interval -1 to 0). There were no substantial differences between the 2 groups in terms of either the wound evaluation scores or the incidence of adverse events. CONCLUSION The novel topical anesthetic putty was not inferior to infiltration with lidocaine with respect to the pain experienced during suturing, and this putty is a feasible alternative to infiltration anesthesia of lacerations in the ED.
Collapse
Affiliation(s)
- Mark G Jenkins
- Department of Emergency Medicine, Antrim Area Hospital, Antrim, UK
| | - Diarmaid J Murphy
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, Belfast, UK
| | - Carol Little
- Department of Emergency Medicine, Antrim Area Hospital, Antrim, UK
| | - Julie McDonald
- Department of Emergency Medicine, Antrim Area Hospital, Antrim, UK
| | - Paul A McCarron
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, County Londonderry, UK.
| |
Collapse
|
26
|
Donnelly RF, Morrow DIJ, McCrudden MTC, Alkilani AZ, Vicente-Pérez EM, O'Mahony C, González-Vázquez P, McCarron PA, Woolfson AD. Hydrogel-forming and dissolving microneedles for enhanced delivery of photosensitizers and precursors. Photochem Photobiol 2013; 90:641-7. [PMID: 24215482 DOI: 10.1111/php.12209] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Accepted: 10/15/2013] [Indexed: 11/29/2022]
Abstract
We present "one-step application" dissolving and hydrogel-forming microneedle arrays (MN) for enhanced delivery of photosensitizers/precursors. MN (280 μm) prepared from 20% w/w poly(methylvinylether/maelic acid) and cross-linked with glycerol by esterification to form hydrogels upon skin insertion, or allowed to dissolve rapidly in skin, were combined with patches containing 19 mg cm(-2) of 5-aminolevulinic acid (ALA) or meso-tetra (N-methyl-4-pyridyl) porphine tetra tosylate (TMP) for drug delivery. Both MN types were mechanically robust, with compression forces of 20.0 N only causing height reductions of 14%. Application forces as low as 8.0 N per array allowed >95% of the MN in each array type to penetrate excised porcine skin, with the MN penetrating to approximately 220 μm. MN significantly enhanced transdermal delivery of ALA and TMP in vitro, with the hydrogel-forming system comparable with the dissolving system for ALA delivery (approximately 3000 nmol cm(-2) over 6 h), but superior for delivery of the much larger TMP molecule (approximately 14 nmol cm(-2) over 24 h, compared to 0.15 nmol cm(-2)). As this technology clearly has potential in enhanced photodynamic therapy of neoplastic skin lesions, we are currently planning animal studies, to be followed by preliminary human evaluations. GMP manufacturing scale-up is ongoing.
Collapse
Affiliation(s)
- Ryan F Donnelly
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, Belfast, UK
| | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Donnelly RF, McCarron PA, Morrow DIJ, Woolfson AD. Fast-drying multi-laminate bioadhesive films for transdermal and topical drug delivery. Drug Dev Ind Pharm 2012; 39:1818-31. [DOI: 10.3109/03639045.2012.738683] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
28
|
Fowley C, Nomikou N, McHale AP, McCarron PA, McCaughan B, Callan JF. Water soluble quantum dots as hydrophilic carriers and two-photon excited energy donors in photodynamic therapy. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm00096b] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
29
|
McCaughan B, Rouanet C, Fowley C, Nomikou N, McHale AP, McCarron PA, Callan JF. Enhanced ROS production and cell death through combined photo- and sono-activation of conventional photosensitising drugs. Bioorg Med Chem Lett 2011; 21:5750-2. [DOI: 10.1016/j.bmcl.2011.08.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 08/01/2011] [Accepted: 08/02/2011] [Indexed: 11/16/2022]
|
30
|
McCarron PA, Murphy DJ, Little C, McDonald J, Kelly OJ, Jenkins MG. Preliminary clinical assessment of polyvinyl alcohol-tetrahydroxyborate hydrogels as potential topical formulations for local anesthesia of lacerations. Acad Emerg Med 2011; 18:333-9. [PMID: 21496134 DOI: 10.1111/j.1553-2712.2011.01032.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES The aim of this study was to assess a novel semisolid material as a potential topical drug delivery system for acute laceration. The objectives were to correlate physical characterization data using rheologic studies and to compare with clinical assessment of performance in an emergency department (ED). METHODS Polyvinyl alcohol (PVA) hydrogels, cross-linked using tetrahydroxyborate (THB), were characterized using texture profile analysis. Formulation samples were applied to acute lacerations presented to the ED and factors, such as in vivo residency time and cohesive removal, were assessed. RESULTS Viscosity was shown to be related to mechanical characteristics, whereas adhesiveness depended on the THB concentration. Residence in, and clean removal from, lacerations was evaluated on 29 patients. Formulation F3 (10.0% PVA, 2.5% w/w THB) displayed the most appropriate characteristics for clinical use by scoring highest in qualitative assessments. Other formulations exhibited difficulties in application and removal due to excessive adhesiveness. The release of a model local anesthetic drug was proportional to the concentration of drug incorporated, but was not substantially affected by small changes in the formulation constituents. CONCLUSIONS Using a combination of pharmaceutical evaluation and clinical assessment, it was shown that cross-linked PVA semisolids are a suitable formulation for drug administration to acute lacerations, with potential for induction of anesthesia prior to wound repair.
Collapse
Affiliation(s)
- Paul A McCarron
- Department of Pharmacy and Pharmaceutical Sciences, University of Ulster, Co. Londonderry, UK
| | | | | | | | | | | |
Collapse
|
31
|
Morrow DI, McCarron PA, Woolfson AD, Juzenas P, Juzeniene A, Iani V, Moan J, Donnelly RF. Hexyl Aminolaevulinate Is a More Effective Topical Photosensitiser Precursor than Methyl Aminolaevulinate and 5-Aminolaevulinic Acids When Applied in Equimolar Doses. J Pharm Sci 2010; 99:3486-98. [DOI: 10.1002/jps.22116] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
32
|
Morrow DIJ, McCarron PA, Woolfson AD, Juzenas P, Juzeniene A, Iani V, Moan J, Donnelly RF. Novel patch-based systems for the localised delivery of ALA-esters. J Photochem Photobiol B 2010; 101:59-69. [PMID: 20634088 DOI: 10.1016/j.jphotobiol.2010.06.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2009] [Revised: 06/06/2010] [Accepted: 06/21/2010] [Indexed: 10/19/2022]
Abstract
In photodynamic therapy (PDT) a combination of visible light and a sensitising drug causes the destruction of selected cells. Aminolaevulinic acid (ALA) has been widely used in topical PDT for over 15 years. However, ALA does not possess favourable physicochemical properties for skin penetration. Consequently, the clearance rates for difficult to treat lesions, such as nodular basal cell carcinomas are relatively low. For the first time, equimolar concentrations of ALA, methyl-ALA (m-ALA) and hexyl-ALA (h-ALA) have been incorporated into a bioadhesive patch-based system. In vitro penetration studies into excised porcine skin revealed that ALA patches containing relatively high loadings (226.7 micromol cm(-2)) were associated with significantly greater tissue concentrations (70.7 micromol cm(-3)) than patches containing m-ALA (16.3 micromol cm(-3)) or h-ALA (17.4 micromol cm(-3)). ALA was also found to be the most efficient inducer of protoporphyrin (PpIX) fluorescence in mice, in vivo (maximum mean fluorescence: ALA=236.2 a.u., m-ALA=175.1 a.u., h-ALA=193.5 a.u.). However, when the lipophilic hexylester was formulated in a pressure sensitive adhesive (PSA) patch, significantly higher PpIX levels were achieved compared to all bioadhesive systems tested. Of major importance, PSA patches containing relatively low h-ALA loadings induced high PpIX levels, which were localised to the application area. This study has highlighted the importance of rational selection of both the active agent and the delivery system. Bioadhesive preparations containing ALA are ideal for delivery to moist environments; whereas h-ALA-loaded PSA systems may facilitate enhanced delivery to dry areas of skin. In addition, owing to the relatively low loadings of h-ALA required in PSA patches, the costs of clinical PDT may potentially be reduced.
Collapse
Affiliation(s)
- Desmond I J Morrow
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, UK
| | | | | | | | | | | | | | | |
Collapse
|
33
|
Morrow DI, McCarron PA, Woolfson AD, Juzenas P, Juzeniene A, Iani V, Moan J, Donnelly RF. Influence of penetration enhancers on topical delivery of 5-aminolevulinic acid from bioadhesive patches. J Pharm Pharmacol 2010; 62:685-95. [DOI: 10.1211/jpp.62.06.0004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
|
34
|
Fay F, Quinn DJ, Gilmore BF, McCarron PA, Scott CJ. Gene delivery using dimethyldidodecylammonium bromide-coated PLGA nanoparticles. Biomaterials 2010; 31:4214-22. [DOI: 10.1016/j.biomaterials.2010.01.143] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2009] [Accepted: 01/29/2010] [Indexed: 02/07/2023]
|
35
|
Donnelly RF, Morrow DIJ, Singh TRR, Migalska K, McCarron PA, O'Mahony C, Woolfson AD. Processing difficulties and instability of carbohydrate microneedle arrays. Drug Dev Ind Pharm 2010; 35:1242-54. [PMID: 19555249 DOI: 10.1080/03639040902882280] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND A number of reports have suggested that many of the problems currently associated with the use of microneedle (MN) arrays for transdermal drug delivery could be addressed by using drug-loaded MN arrays prepared by moulding hot melts of carbohydrate materials. METHODS In this study, we explored the processing, handling, and storage of MN arrays prepared from galactose with a view to clinical application. RESULTS Galactose required a high processing temperature (160 degrees C), and molten galactose was difficult to work with. Substantial losses of the model drugs 5-aminolevulinic acid (ALA) and bovine serum albumin were incurred during processing. While relatively small forces caused significant reductions in MN height when applied to an aluminium block, this was not observed during their relatively facile insertion into heat-stripped epidermis. Drug release experiments using ALA-loaded MN arrays revealed that less than 0.05% of the total drug loading was released across a model silicone membrane. Similarly, only low amounts of ALA (approximately 0.13%) and undetectable amounts of bovine serum albumin were delivered when galactose arrays were combined with aqueous vehicles. Microscopic inspection of the membrane following release studies revealed that no holes could be observed in the membrane, indicating that the partially dissolved galactose sealed the MN-induced holes, thus limiting drug delivery. Indeed, depth penetration studies into excised porcine skin revealed that there was no significant increase in ALA delivery using galactose MN arrays, compared to control (P value < 0.05). Galactose MNs were unstable at ambient relative humidities and became adhesive. CONCLUSION The processing difficulties and instability encountered in this study are likely to preclude successful clinical application of carbohydrate MNs. The findings of this study are of particular importance to those in the pharmaceutical industry involved in the design and formulation of transdermal drug delivery systems based on dissolving MN arrays. It is hoped that we have illustrated conclusively the difficulties inherent in the processing and storage of carbohydrate-based dissolving MNs and that those in the industry will now follow alternative approaches.
Collapse
Affiliation(s)
- Ryan F Donnelly
- Medical Biology Centre, School of Pharmacy, Queen's University Belfast, Belfast, UK.
| | | | | | | | | | | | | |
Collapse
|
36
|
Al-Kassas R, Donnelly RF, McCarron PA. Aminolevulinic acid-loaded Witepsol microparticles manufactured using a spray congealing procedure: implications for topical photodynamic therapy. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.61.09.0001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Objectives
The aim was to enhance aminolevulinic acid (ALA) stability by incorporation into low-melting microparticles prepared using a spray congealing procedure and to evaluate temperature-triggered release, allowing topical bioavailability following melting at skin temperature.
Methods
ALA-loaded Witepsol microparticles were prepared using a novel spray congealing technique. Entrapment efficiency was compared with conventional emulsion-based methods and modelled drug release profiles determined using a membrane separation technique. Raised receiver medium temperature was used to determine triggered release. Bioavailability and lipid-mediated enhancement of ALA penetration were determined in excised murine skin.
Key findings
ALA-loaded Witepsol microparticles were spherical, with a mean diameter of 20 μm. Loading and stability studies demonstrated effective encapsulation, ranging from 91% to 100%, with no evidence of degradation to pyrazine derivatives. ALA release correlated with dissolution medium temperature, triggered at temperatures close to that of skin. Results suggested that molten Witepsol enhanced cutaneous permeation, whereas incorporation of microparticles in a semi-solid vehicle attenuated ALA penetration. Optimal use was direct application under occlusion.
Conclusions
Spray congealing is superior to the emulsion-based procedures with respect to encapsulation efficiency of ALA in Witepsol matrices, providing temperature-triggered release, enhanced stability and improved penetration of ALA through keratinised skin. These features could improve ALA delivery to superficial lesions as part of photodynamic therapy.
Collapse
Affiliation(s)
- Rasil Al-Kassas
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, Belfast, UK
| | - Ryan F Donnelly
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, Belfast, UK
| | - Paul A McCarron
- Department of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Co. Londonderry, UK
| |
Collapse
|
37
|
Affiliation(s)
- Paul A McCarron
- Department of Pharmacy & Pharmaceutical Sciences, University of Ulster, Cromore Road, Coleraine, BT52 1SA, UK
| | - Ahmed Moustafa Faheem
- Department of Pharmacy & Pharmaceutical Sciences, University of Ulster, Cromore Road, Coleraine, BT52 1SA, UK
| |
Collapse
|
38
|
Donnelly RF, Singh TRR, Tunney MM, Morrow DIJ, McCarron PA, O'Mahony C, Woolfson AD. Microneedle arrays allow lower microbial penetration than hypodermic needles in vitro. Pharm Res 2009; 26:2513-22. [PMID: 19756972 PMCID: PMC2900181 DOI: 10.1007/s11095-009-9967-2] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2009] [Accepted: 08/25/2009] [Indexed: 11/24/2022]
Abstract
METHODS In this study we determined, for the first time, the ability of microorganisms to traverse microneedle-induced holes using two different in vitro models. RESULTS When employing Silescol membranes, the numbers of Candida albicans, Pseudomonas aeruginosa and Staphylococcus epidermidis crossing the membranes were an order of magnitude lower when the membranes were punctured by microneedles rather than a 21G hypodermic needle. Apart from the movement of C. albicans across hypodermic needle-punctured membranes, where 40.2% of the microbial load on control membranes permeated the barrier over 24 h, the numbers of permeating microorganisms was less than 5% of the original microbial load on control membranes. Experiments employing excised porcine skin and radiolabelled microorganisms showed that the numbers of microorganisms penetrating skin beyond the stratum corneum were approximately an order of magnitude greater than the numbers crossing Silescol membranes in the corresponding experiments. Approximately 10(3) cfu of each microorganism adhered to hypodermic needles during insertion. The numbers of microorganisms adhering to MN arrays were an order of magnitude higher in each case. CONCLUSION We have shown here that microneedle puncture resulted in significantly less microbial penetration than did hypodermic needle puncture and that no microorganisms crossed the viable epidermis in microneedle-punctured skin, in contrast to needle-punctured skin. Given the antimicrobial properties of skin, it is, therefore, likely that application of microneedle arrays to skin in an appropriate manner would not cause either local or systemic infection in normal circumstances in immune-competent patients. In supporting widespread clinical use of microneedle-based delivery systems, appropriate animal studies are now needed to conclusively demonstrate this in vivo. Safety in patients will be enhanced by aseptic or sterile manufacture and by fabricating microneedles from self-disabling materials (e.g. dissolving or biodegradable polymers) to prevent inappropriate or accidental reuse.
Collapse
Affiliation(s)
- Ryan F Donnelly
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, Belfast, BT9 7BL, UK.
| | | | | | | | | | | | | |
Collapse
|
39
|
Al-Kassas R, Donnelly RF, McCarron PA. Aminolevulinic acid-loaded Witepsol microparticles manufactured using a spray congealing procedure: implications for topical photodynamic therapy. J Pharm Pharmacol 2009; 61:1125-35. [PMID: 19703361 DOI: 10.1211/jpp/61.09.0001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVES The aim was to enhance aminolevulinic acid (ALA) stability by incorporation into low-melting microparticles prepared using a spray congealing procedure and to evaluate temperature-triggered release, allowing topical bioavailability following melting at skin temperature. METHODS ALA-loaded Witepsol microparticles were prepared using a novel spray congealing technique. Entrapment efficiency was compared with conventional emulsion-based methods and modelled drug release profiles determined using a membrane separation technique. Raised receiver medium temperature was used to determine triggered release. Bioavailability and lipid-mediated enhancement of ALA penetration were determined in excised murine skin. KEY FINDINGS ALA-loaded Witepsol microparticles were spherical, with a mean diameter of 20 mum. Loading and stability studies demonstrated effective encapsulation, ranging from 91% to 100%, with no evidence of degradation to pyrazine derivatives. ALA release correlated with dissolution medium temperature, triggered at temperatures close to that of skin. Results suggested that molten Witepsol enhanced cutaneous permeation, whereas incorporation of microparticles in a semi-solid vehicle attenuated ALA penetration. Optimal use was direct application under occlusion. CONCLUSIONS Spray congealing is superior to the emulsion-based procedures with respect to encapsulation efficiency of ALA in Witepsol matrices, providing temperature-triggered release, enhanced stability and improved penetration of ALA through keratinised skin. These features could improve ALA delivery to superficial lesions as part of photodynamic therapy.
Collapse
Affiliation(s)
- Rasil Al-Kassas
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, Belfast, UK
| | | | | |
Collapse
|
40
|
Morrow DI, McCarron PA, Woolfson AD, Donnelly RF. Practical Considerations in the Pharmaceutical Analysis of Methyl and Hexyl Ester Derivatives of 5-Aminolevulinic Acid. ACTA ACUST UNITED AC 2009. [DOI: 10.2174/1874065000903010006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
41
|
Singh TRR, McCarron PA, Woolfson AD, Donnelly RF. Physicochemical characterization of poly(ethylene glycol) plasticized poly(methyl vinyl ether-co-maleic acid) films. J Appl Polym Sci 2009. [DOI: 10.1002/app.29523] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
42
|
Cassidy CM, Tunney MM, McCarron PA, Donnelly RF. Drug delivery strategies for photodynamic antimicrobial chemotherapy: From benchtop to clinical practice. Journal of Photochemistry and Photobiology B: Biology 2009; 95:71-80. [DOI: 10.1016/j.jphotobiol.2009.01.005] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2008] [Revised: 01/12/2009] [Accepted: 01/15/2009] [Indexed: 11/15/2022]
|
43
|
Raj Singh TR, McCarron PA, Woolfson AD, Donnelly RF. Investigation of swelling and network parameters of poly(ethylene glycol)-crosslinked poly(methyl vinyl ether-co-maleic acid) hydrogels. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2008.12.019] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
44
|
Donnelly RF, Morrissey A, McCarron PA, Woolfson DA. Microstructured devices for transdermal drug delivery and minimally-invasive patient monitoring. ACTA ACUST UNITED AC 2009; 1:195-200. [PMID: 19075886 DOI: 10.2174/187221107782331656] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Transdermal drug delivery offers certain advantages over conventional oral or parenteral administration. However, the excellent barrier function of the skin, accomplished almost entirely by the stratum corneum, restricts the number of drug substances that can be administered transdermally to those with very specific physicochemical properties. Several approaches have been used to enhance the transport of drugs through the stratum corneum. However, in many cases, only moderate success has been achieved and each approach is associated with significant problems. Microstructured devices, consisting of a plurality of microprojections attached to a support, can be used to painlessly bypass the stratum corneum barrier and thus achieve successful transdermal delivery. Moreover, microprojection devices also enable minimally-invasive sampling and monitoring of biological fluids. Much activity is currently focussed in this area. Accordingly, this article deals with the innovations pertaining to microprojection-based devices for transdermal drug delivery and minimally-invasive monitoring as disclosed in recent patent literature.
Collapse
Affiliation(s)
- Ryan F Donnelly
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, Belfast, UK.
| | | | | | | |
Collapse
|
45
|
Donnelly RF, McCarron PA, Al-Kassas R, Juzeniene A, Juzenas P, Iani V, Woolfson AD, Moan J. Influence of formulation factors on PpIX production and photodynamic action of novel ALA-loaded microparticles. Biopharm Drug Dispos 2009; 30:55-70. [DOI: 10.1002/bdd.645] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
46
|
Abstract
Photodynamic therapy (PDT) is a medical treatment in which a combination of a photosensitizing drug and visible light causes destruction of selected cells. Over the past two decades, photodynamic therapy has enjoyed a period of intense investigation, both in the laboratory and in the clinic. Although still widely considered to be an experimental technique, its status and value within modern clinical practice continues to grow. The PDT field has, to date, been dominated by a small number of pharmaceutical companies and inhabited almost exclusively by clinicians and those involved in fundamental scientific research. True pharmaceutical formulation development has been limited, to some extent, by financial constraints. If PDT is to realise its undoubted potential in clinical practice it is important that awareness of the need for appropriate photosensitizer delivery systems is raised. Accordingly, this article deals with the innovations pertaining to drug delivery systems for photodynamic therapy as disclosed in recent patent literature.
Collapse
Affiliation(s)
- Ryan F Donnelly
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, UK.
| | | | | |
Collapse
|
47
|
Sibani SA, McCarron PA, Woolfson AD, Donnelly RF. Photosensitiser delivery for photodynamic therapy. Part 2: systemic carrier platforms. Expert Opin Drug Deliv 2009; 5:1241-54. [PMID: 18976134 DOI: 10.1517/17425240802444673] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND The treatment of solid tumours and angiogenic ocular diseases by photodynamic therapy (PDT) requires the injection of a photosensitiser (PS) to destroy target cells through a combination of visible light irradiation and molecular oxygen. There is currently great interest in the development of efficient and specific carrier delivery platforms for systemic PDT. OBJECTIVE This article aims to review recent developments in systemic carrier delivery platforms for PDT, with an emphasis on target specificity. METHODS Recent publications, spanning the last five years, concerning delivery carrier platforms for systemic PDT were reviewed, including PS conjugates, dendrimers, micelles, liposomes and nanoparticles. RESULTS/CONCLUSION PS conjugates and supramolecular delivery platforms can improve PDT selectivity by exploiting cellular and physiological specificities of the targeted tissue. Overexpression of receptors in cancer and angiogenic endothelial cells allows their targeting by affinity-based moieties for the selective uptake of PS conjugates and encapsulating delivery carriers, while the abnormal tumour neovascularisation induces a specific accumulation of heavy weighted PS carriers by enhanced permeability and retention (EPR) effect. In addition, polymeric prodrug delivery platforms triggered by the acidic nature of the tumour environment or the expression of proteases can be designed. Promising results obtained with recent systemic carrier platforms will, in due course, be translated into the clinic for highly efficient and selective PDT protocols.
Collapse
Affiliation(s)
- Stéphane A Sibani
- Queens University Belfast, Medical Biology Centre, School of Pharmacy, 97 Lisburn Road, Belfast BT9 7BL, UK
| | | | | | | |
Collapse
|
48
|
Donnelly RF, Morrow DIJ, McCarron PA, David Woolfson A, Morrissey A, Juzenas P, Juzeniene A, Iani V, McCarthy HO, Moan J. Microneedle Arrays Permit Enhanced Intradermal Delivery of a Preformed Photosensitizer. Photochem Photobiol 2009; 85:195-204. [DOI: 10.1111/j.1751-1097.2008.00417.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
49
|
McCarron PA, Marouf WM, Donnelly RF, Scott C. Enhanced surface attachment of protein-type targeting ligands to poly(lactide-co-glycolide) nanoparticles using variable expression of polymeric acid functionality. J Biomed Mater Res A 2008; 87:873-84. [DOI: 10.1002/jbm.a.31835] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
50
|
Donnelly RF, McCarron PA, Morrow DIJ, Sibani SA, Woolfson AD. Photosensitiser delivery for photodynamic therapy. Part 1: Topical carrier platforms. Expert Opin Drug Deliv 2008; 5:757-66. [PMID: 18590460 DOI: 10.1517/17425247.5.7.757] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Photodynamic therapy (PDT) is a medical treatment in which a combination of a photosensitising drug and visible light causes destruction of selected cells. Due to the lack of true selectivity of preformed photosensitisers for neoplastic tissue and their high molecular weights, PDT of superficial skin lesions has traditionally been mediated by topical application of the porphyrin precursor 5-aminolevulinic acid (ALA). OBJECTIVE This article aims to review the traditional formulation-based approaches taken to topical delivery of ALA and discusses the more innovative strategies investigated for enhancement of PDT mediated by topical application of ALA and preformed photosensitisers. METHODS All of the available published print and online literature in this area was reviewed. As drug delivery of agents used in PDT is still something of an emerging field, it was not necessary to go beyond literature from the last 30 years. RESULTS/CONCLUSION PDT of neoplastic skin lesions is currently based almost exclusively on topical application of simple semisolid dosage forms containing ALA or its methyl ester. Until expiry of patents on the current market-leading products, there is unlikely to be a great incentive to engage in design and evaluation of innovative formulations for topical PDT, especially those containing the more difficult-to-deliver preformed photosensitisers.
Collapse
Affiliation(s)
- Ryan F Donnelly
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast, UK.
| | | | | | | | | |
Collapse
|