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Park HC, Li D, Liang R, Adrales G, Li X. Multifunctional Ablative Gastrointestinal Imaging Capsule (MAGIC) for Esophagus Surveillance and Interventions. BME FRONTIERS 2024; 5:0041. [PMID: 38577399 PMCID: PMC10993155 DOI: 10.34133/bmef.0041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 03/04/2024] [Indexed: 04/06/2024] Open
Abstract
Objective and Impact Statement: A clinically viable technology for comprehensive esophagus surveillance and potential treatment is lacking. Here, we report a novel multifunctional ablative gastrointestinal imaging capsule (MAGIC) technology platform to address this clinical need. The MAGIC technology could also facilitate the clinical translation and adoption of the tethered capsule endomicroscopy (TCE) technology. Introduction: Recently developed optical coherence tomography (OCT) TCE technologies have shown a promising potential for surveillance of Barrett's esophagus and esophageal cancer in awake patients without the need for sedation. However, it remains challenging with the current TCE technology for detecting early lesions and clinical adoption due to its suboptimal resolution, imaging contrast, and lack of visual guidance during imaging. Methods: Our technology reported here integrates dual-wavelength OCT imaging (operating at 800 and 1300 nm), an ultracompact endoscope camera, and an ablation laser, aiming to enable comprehensive surveillance, guidance, and potential ablative treatment of the esophagus. Results: The MAGIC has been successfully developed with its multimodality imaging and ablation capabilities demonstrated by imaging swine esophagus ex vivo and in vivo. The 800-nm OCT imaging offers exceptional resolution and contrast for the superficial layers, well suited for detecting subtle changes associated with early neoplasia. The 1300-nm OCT imaging provides deeper penetration, essential for assessing lesion invasion. The built-in miniature camera affords a conventional endoscopic view for assisting capsule deployment and laser ablation. Conclusion: By offering complementary and clinically viable functions in a single device, the reported technology represents an effective solution for endoscopic screening, diagnosis, and potential ablation treatment of the esophagus of a patient in an office setting.
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Affiliation(s)
- Hyeon-Cheol Park
- Department of Biomedical Engineering,
Johns Hopkins University, Baltimore, MD 21205, USA
| | - Dawei Li
- Department of Biomedical Engineering,
Johns Hopkins University, Baltimore, MD 21205, USA
- Department of College of Future Technology,
Peking University, Beijing, 100871, China
| | - Rongguang Liang
- College of Optical Sciences,
University of Arizona, Tucson, AZ 85721, USA
| | - Gina Adrales
- Department of Surgery,
Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Xingde Li
- Department of Biomedical Engineering,
Johns Hopkins University, Baltimore, MD 21205, USA
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2
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Ryu DS, Kim JW, Lee H, Eo SJ, Kim SH, Noh JH, Kim Y, Kang S, Na K, Park JH, Kim DH. Localized Photodynamic Therapy Using a Chlorin e6-Embedded Silicone-Covered Self-Expandable Metallic Stent as a Palliative Treatment for Malignant Esophageal Strictures. ACS Biomater Sci Eng 2024; 10:1869-1879. [PMID: 38291563 DOI: 10.1021/acsbiomaterials.3c01211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Localized photodynamic therapy (PDT) uses a polymeric-photosensitizer (PS)-embedded, covered self-expandable metallic stent (SEMS). PDT is minimally invasive and a noteworthy potential alternative for treating esophageal strictures, where surgery is not a viable option. However, preclinical evidence is insufficient, and optimized irradiation energy dose ranges for localized PDT are unclear. Herein, we validated the irradiation energy doses of the SEMS (embedded in a PS using chlorin e6 [Ce6] and covered in silicone) and PDT-induced tissue changes in a rat esophagus. Cytotoxicity and phototoxicity in the Ce6-embedded SEMS piece with laser irradiation were significantly higher than that of the silicone-covered SEMS with or without laser and the Ce6-embedded silicone-covered SEMS without laser groups (all p < 0.001). Moreover, surface morphology, atomic changes, and homogeneous coverage of the Ce6-embedded silicone-covered membrane were confirmed. The ablation range of the porcine liver was proportionally increased with the irradiation dose (all p < 0.001). The ablation region was identified at different irradiation energy doses of 50, 100, 200, and 400 J/cm2. The in vivo study in the rat esophagus comprised a control group and 100, 200, and 400 J/cm2 energy-dose groups. Finally, histology and immunohistochemistry (TUNEL and Ki67) confirmed that the optimized Ce6-embedded silicone-covered SEMS with selected irradiation energy doses (200 and 400 J/cm2) effectively damaged the esophageal tissue without ductal perforation. The polymeric PS-embedded silicone-covered SEMS can be easily placed via a minimally invasive approach and represents a promising new approach for the palliative treatment of malignant esophageal strictures.
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Affiliation(s)
- Dae Sung Ryu
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Ji Won Kim
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Hyeonseung Lee
- Department of Biotechnology, Department of Biomedical-Chemical Engineering, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do 14662, Republic of Korea
| | - Seong Jin Eo
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Song Hee Kim
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Jin Hee Noh
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Yuri Kim
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Seokin Kang
- Department of Internal Medicine, Ilsan Paik Hospital, Inje University College of Medicine, 170, Juhwa-ro, Ilsanseo-gu, Goyang, Gyeonggi-do 10380, Republic of Korea
| | - Kun Na
- Department of Biotechnology, Department of Biomedical-Chemical Engineering, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do 14662, Republic of Korea
| | - Jung-Hoon Park
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
- Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Do Hoon Kim
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
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3
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Aebisher D, Woźnicki P, Dynarowicz K, Kawczyk-Krupka A, Cieślar G, Bartusik-Aebisher D. Photodynamic Therapy and Immunological View in Gastrointestinal Tumors. Cancers (Basel) 2023; 16:66. [PMID: 38201494 PMCID: PMC10777986 DOI: 10.3390/cancers16010066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 12/13/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024] Open
Abstract
Gastrointestinal cancers are a specific group of oncological diseases in which the location and nature of growth are of key importance for clinical symptoms and prognosis. At the same time, as research shows, they pose a serious threat to a patient's life, especially at an advanced stage of development. The type of therapy used depends on the anatomical location of the cancer, its type, and the degree of progression. One of the modern forms of therapy used to treat gastrointestinal cancers is PDT, which has been approved for the treatment of esophageal cancer in the United States. Despite the increasingly rapid clinical use of this treatment method, the exact immunological mechanisms it induces in cancer cells has not yet been fully elucidated. This article presents a review of the current understanding of the mode of action of photodynamic therapy on cells of various gastrointestinal cancers with an emphasis on colorectal cancer. The types of cell death induced by PDT include apoptosis, necrosis, and pyroptosis. Anticancer effects are also a result of the destruction of tumor vasculature and activation of the immune system. Many reports exist that concern the mechanism of apoptosis induction, of which the mitochondrial pathway is most often emphasized. Photodynamic therapy may also have a beneficial effect on such aspects of cancer as the ability to develop metastases or contribute to reducing resistance to known pharmacological agents.
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Affiliation(s)
- David Aebisher
- Department of Photomedicine and Physical Chemistry, Medical College of the University of Rzeszów, 35-959 Rzeszów, Poland
| | - Paweł Woźnicki
- Students English Division Science Club, Medical College of the University of Rzeszów, 35-959 Rzeszów, Poland
| | - Klaudia Dynarowicz
- Center for Innovative Research in Medical and Natural Sciences, Medical College of the University of Rzeszów, 35-310 Rzeszów, Poland;
| | - Aleksandra Kawczyk-Krupka
- Department of Internal Medicine, Angiology and Physical Medicine, Center for Laser Diagnostics and Therapy, Medical University of Silesia, Batorego 15 Street, 41-902 Bytom, Poland; (A.K.-K.); (G.C.)
| | - Grzegorz Cieślar
- Department of Internal Medicine, Angiology and Physical Medicine, Center for Laser Diagnostics and Therapy, Medical University of Silesia, Batorego 15 Street, 41-902 Bytom, Poland; (A.K.-K.); (G.C.)
| | - Dorota Bartusik-Aebisher
- Department of Biochemistry and General Chemistry, Medical College of the University of Rzeszów, 35-959 Rzeszów, Poland;
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Kim SE, Schlottmann F, Masrur MA. Management of Long-Segment Barrett's Esophagus. J Laparoendosc Adv Surg Tech A 2023; 33:1201-1210. [PMID: 37796531 DOI: 10.1089/lap.2023.0321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023] Open
Abstract
Background: Gastroesophageal reflux disease is a common gastrointestinal disorder with one of its most feared complications being Barrett's esophagus (BE). Currently, most of the recommendations of BE management are driven by the level of dysplasia. However, the length of BE might also be related to the risk of dysplasia/malignant transformation. We aimed to determine the appropriate management of BE based on its length. Materials and Methods: A systematic literature review was conducted with searches made on PubMed, Embase, and Cochrane databases. Long-segment BE (LSBE) was defined as 3 cm or longer and short-segment BE (SSBE) as under 3 cm. Studies evaluating the behavior and management of SSBE and/or LSBE were included for analysis. Results: LSBE have greater risk of dysplasia or progression to esophageal adenocarcinoma compared to SSBE. Despite this greater risk, LSBE and SSBE are currently managed similarly based on the presence and degree of dysplasia. Endoscopic and ablative techniques may have higher level of success and less complications in SSBE, compared to LSBE. Decreasing time interval between surveillance may be a viable option for managing LSBE. Conclusions: Although many algorithms of monitoring and treatment of BE remain the same regardless of segment length, current evidence suggests that more aggressive management for LSBE might be needed due to its higher risk of malignant progression.
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Affiliation(s)
- Sarah E Kim
- Department of Surgery, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Francisco Schlottmann
- Department of Surgery, University of Illinois at Chicago, Chicago, Illinois, USA
- Department of Surgery, Hospital Alemán of Buenos Aires, Buenos Aires, Argentina
| | - Mario A Masrur
- Department of Surgery, University of Illinois at Chicago, Chicago, Illinois, USA
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5
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Gounella R, Granado TC, Hideo Ando Junior O, Luporini DL, Gazziro M, Carmo JP. Endoscope Capsules: The Present Situation and Future Outlooks. Bioengineering (Basel) 2023; 10:1347. [PMID: 38135938 PMCID: PMC10741108 DOI: 10.3390/bioengineering10121347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/04/2023] [Accepted: 11/20/2023] [Indexed: 12/24/2023] Open
Abstract
This paper presents new perspectives on photonic technologies for capsule endoscopy. It first presents a review of conventional endoscopy (upper endoscopy and colonoscopy), followed by capsule endoscopy (CE), as well as their techniques, advantages, and drawbacks. The technologies for CEs presented in this paper include integration with the existing endoscopic systems that are commercially available. Such technologies include narrow-band imaging (NBI), photodynamic therapy (PDT), confocal laser endomicroscopy (CLE), optical coherence tomography (OCT), and spectroscopy in order to improve the performance of the gastrointestinal (GI) tract examination. In the context of NBI, two optical filters were designed and fabricated for integration into endoscopic capsules, allowing for the visualization of light centered at the 415 nm and 540 nm wavelengths. These optical filters are based on the principle of Fabry-Perot and were made of thin films of titanium dioxide (TiO2) and silicon dioxide (SiO2). Moreover, strategies and solutions for the adaptation of ECs for PDT are also discussed.
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Affiliation(s)
- Rodrigo Gounella
- Group of Metamaterials Microwaves and Optics (GMeta), Department of Electrical Engineering (SEL), University of São Paulo (USP), Avenida Trabalhador São-Carlense, Nr. 400, Parque Industrial Arnold Schimidt, São Carlos 13566-590, Brazil; (T.C.G.); (J.P.C.)
| | - Talita Conte Granado
- Group of Metamaterials Microwaves and Optics (GMeta), Department of Electrical Engineering (SEL), University of São Paulo (USP), Avenida Trabalhador São-Carlense, Nr. 400, Parque Industrial Arnold Schimidt, São Carlos 13566-590, Brazil; (T.C.G.); (J.P.C.)
| | - Oswaldo Hideo Ando Junior
- Academic Unit of Cabo de Santo Agostinho (UACSA), Federal Rural University of Pernambuco (UFRPE), Cabo de Santo Agostinho 54518-430, Brazil;
| | - Daniel Luís Luporini
- Clinica Endoscopia São Carlos, Rua Paulino Botelho de Abreu Sampaio, 958, Centro, São Carlos 13561-060, Brazil;
| | - Mario Gazziro
- Information Engineering Group, Department of Engineering and Social Sciences (CECS), Federal University of ABC (UFABC), Av. dos Estados, 5001, Santo André 09210-580, Brazil;
| | - João Paulo Carmo
- Group of Metamaterials Microwaves and Optics (GMeta), Department of Electrical Engineering (SEL), University of São Paulo (USP), Avenida Trabalhador São-Carlense, Nr. 400, Parque Industrial Arnold Schimidt, São Carlos 13566-590, Brazil; (T.C.G.); (J.P.C.)
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6
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Bhattacharya D, Mukhopadhyay M, Shivam K, Tripathy S, Patra R, Pramanik A. Recent developments in photodynamic therapy and its application against multidrug resistant cancers. Biomed Mater 2023; 18:062005. [PMID: 37827172 DOI: 10.1088/1748-605x/ad02d4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 10/12/2023] [Indexed: 10/14/2023]
Abstract
Recently, photodynamic therapy (PDT) has received a lot of attention for its potential use in cancer treatment. It enables the therapy of a multifocal disease with the least amount of tissue damage. The most widely used prodrug is 5-aminolevulinic acid, which undergoes heme pathway conversion to protoporphyrin IX, which acts as a photosensitizer (PS). Additionally, hematoporphyrin, bacteriochlorin, and phthalocyanine are also studied for their therapeutic potential in cancer. Unfortunately, not every patient who receives PDT experiences a full recovery. Resistance to different anticancer treatments is commonly observed. A few of the resistance mechanisms by which cancer cells escape therapeutics are genetic factors, drug-drug interactions, impaired DNA repair pathways, mutations related to inhibition of apoptosis, epigenetic pathways, etc. Recently, much research has been conducted to develop a new generation of PS based on nanomaterials that could be used to overcome cancer cells' multidrug resistance (MDR). Various metal-based, polymeric, lipidic nanoparticles (NPs), dendrimers, etc, have been utilized in the PDT application against cancer. This article discusses the detailed mechanism by which cancer cells evolve towards MDR as well as recent advances in PDT-based NPs for use against multidrug-resistant cancers.
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Affiliation(s)
- Debalina Bhattacharya
- Department of Microbiology, Maulana Azad College, Kolkata, West Bengal 700013, India
| | - Mainak Mukhopadhyay
- Department of Biotechnology, JIS University, Kolkata, West Bengal 700109, India
| | - Kumar Shivam
- Amity Institute of Click Chemistry Research & Studies, Amity University, Noida 201301, India
| | - Satyajit Tripathy
- Department of Pharmacology, University of Free State, Bloemfontein, Free State, 9301, South Africa
- Amity Institute of Allied Health Science, Amity University, Noida 201301, India
| | - Ranjan Patra
- Amity Institute of Click Chemistry Research & Studies, Amity University, Noida 201301, India
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Arindam Pramanik
- School of Medicine, University of Leeds, Leeds, LS9 7TF, United Kingdom
- Amity Institute of Biotechnology, Amity University, Noida 201301, India
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Sheikh M, Roshandel G, McCormack V, Malekzadeh R. Current Status and Future Prospects for Esophageal Cancer. Cancers (Basel) 2023; 15:765. [PMID: 36765722 PMCID: PMC9913274 DOI: 10.3390/cancers15030765] [Citation(s) in RCA: 35] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 01/10/2023] [Accepted: 01/20/2023] [Indexed: 01/28/2023] Open
Abstract
Esophageal cancer (EC) is the ninth most common cancer and the sixth leading cause of cancer deaths worldwide. Esophageal squamous cell carcinoma (ESCC) and esophageal adenocarcinoma (EAC) are the two main histological subtypes with distinct epidemiological and clinical features. While the global incidence of ESCC is declining, the incidence of EAC is increasing in many countries. Decades of epidemiologic research have identified distinct environmental exposures for ESCC and EAC subtypes. Recent advances in understanding the genomic aspects of EC have advanced our understanding of EC causes and led to using specific genomic alterations in EC tumors as biomarkers for early diagnosis, treatment, and prognosis of this cancer. Nevertheless, the prognosis of EC is still poor, with a five-year survival rate of less than 20%. Currently, there are significant challenges for early detection and secondary prevention for both ESCC and EAC subtypes, but Cytosponge™ is shifting this position for EAC. Primary prevention remains the preferred strategy for reducing the global burden of EC. In this review, we will summarize recent advances, current status, and future prospects of the studies related to epidemiology, time trends, environmental risk factors, prevention, early diagnosis, and treatment for both EC subtypes.
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Affiliation(s)
- Mahdi Sheikh
- Genomic Epidemiology Branch, International Agency for Research on Cancer (IARC/WHO), 69007 Lyon, France
| | - Gholamreza Roshandel
- Golestan Research Center of Gastroenterology and Hepatology, Golestan University of Medical Sciences, Gorgan 49341-74515, Iran
| | - Valerie McCormack
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer (IARC/WHO), 69007 Lyon, France
| | - Reza Malekzadeh
- Digestive Oncology Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran 14117-13135, Iran
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8
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Bartusik-Aebisher D, Osuchowski M, Adamczyk M, Stopa J, Cieślar G, Kawczyk-Krupka A, Aebisher D. Advancements in photodynamic therapy of esophageal cancer. Front Oncol 2022; 12:1024576. [PMID: 36465381 PMCID: PMC9713848 DOI: 10.3389/fonc.2022.1024576] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 10/24/2022] [Indexed: 12/02/2023] Open
Abstract
The poor prognosis of patients with esophageal cancer leads to the constant search for new ways of treatment of this disease. One of the methods used in high-grade dysplasia, superficial invasive carcinoma, and sometimes palliative care is photodynamic therapy (PDT). This method has come a long way from the first experimental studies to registration in the treatment of esophageal cancer and is constantly being improved and refined. This review describes esophageal cancer, current treatment methods, the introduction to PDT, the photosensitizers (PSs) used in esophageal carcinoma PDT, PDT in squamous cell carcinoma (SCC) of the esophagus, and PDT in invasive adenocarcinoma of the esophagus. For this review, research and review articles from PubMed and Web of Science databases were used. The keywords used were "photodynamic therapy in esophageal cancer" in the years 2000-2020. The total number of papers returned was 1,000. After the review was divided into topic blocks and the searched publications were analyzed, 117 articles were selected.
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Affiliation(s)
- Dorota Bartusik-Aebisher
- Department of Biochemistry and General Chemistry, Medical College of The University of Rzeszów, Rzeszów, Poland
| | | | - Marta Adamczyk
- Medical Faculty, Medical University of Warsaw, Warsaw, Poland
| | - Joanna Stopa
- Medical College of The University of Rzeszów, Rzeszów, Poland
| | - Grzegorz Cieślar
- Department of Internal Medicine, Angiology, and Physical Medicine, Center for Laser Diagnostics and Therapy, Medical University of Silesia in Katowice, Bytom, Poland
| | - Aleksandra Kawczyk-Krupka
- Department of Internal Medicine, Angiology, and Physical Medicine, Center for Laser Diagnostics and Therapy, Medical University of Silesia in Katowice, Bytom, Poland
| | - David Aebisher
- Department of Photomedicine and Physical Chemistry, Medical College of The University of Rzeszów, Rzeszów, Poland
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9
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Zheng W, Zhou Z, Lv Q, Song X, Zhang W, Cui H. Oxygen‐generated Hierarchical‐Structured AuNRs@MnO
2
@SiO
2
Nanocarrier for Enhanced NIR‐ and H
2
O
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‐Responsive Mild‐hyperthermia Photodynamic/photothermal Combined Tumor Therapy. ADVANCED THERAPEUTICS 2022. [DOI: 10.1002/adtp.202200108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wen‐Jie Zheng
- School of Life Sciences Zhengzhou University Science Avenue 100# Zhengzhou 450001 China
| | - Ze‐Lei Zhou
- School of Life Sciences Zhengzhou University Science Avenue 100# Zhengzhou 450001 China
| | - Qi‐Yan Lv
- School of Life Sciences Zhengzhou University Science Avenue 100# Zhengzhou 450001 China
| | - Xiaojie Song
- School of Life Sciences Zhengzhou University Science Avenue 100# Zhengzhou 450001 China
| | - Wen‐Xing Zhang
- School of Life Sciences Zhengzhou University Science Avenue 100# Zhengzhou 450001 China
| | - Hui‐Fang Cui
- School of Life Sciences Zhengzhou University Science Avenue 100# Zhengzhou 450001 China
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10
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Paiji C, Sedarat A. Endoscopic Management of Esophageal Cancer. Cancers (Basel) 2022; 14:cancers14153583. [PMID: 35892840 PMCID: PMC9329770 DOI: 10.3390/cancers14153583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 07/18/2022] [Accepted: 07/20/2022] [Indexed: 02/04/2023] Open
Abstract
Advances in technology and improved understanding of the pathobiology of esophageal cancer have allowed endoscopy to serve a growing role in the management of this disease. Precursor lesions can be detected using enhanced diagnostic modalities and eradicated with ablation therapy. Furthermore, evolution in endoscopic resection has provided larger specimens for improved diagnostic accuracy and offer potential for cure of early esophageal cancer. In patients with advanced esophageal cancer, endoluminal therapy can improve symptom burden and provide therapeutic options for complications such as leaks, perforations, and fistulas. The purpose of this review article is to highlight the role of endoscopy in the diagnosis, treatment, and palliation of esophageal cancer.
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11
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Singlet Oxygen, Photodynamic Therapy, and Mechanisms of Cancer Cell Death. JOURNAL OF ONCOLOGY 2022; 2022:7211485. [PMID: 35794980 PMCID: PMC9252714 DOI: 10.1155/2022/7211485] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 05/07/2022] [Accepted: 05/11/2022] [Indexed: 01/06/2023]
Abstract
Photodynamic therapy (PDT) can be developed into an important arsenal against cancer; it is a minimally invasive therapy, which is used in the treatment or/and palliation of a variety of cancers and benign diseases. The removal of cancerous tissue is achieved with the use of photosensitizer and a light source, which excites the photosensitizer. This excitation causes the photosensitizer to generate singlet oxygen and other reactive oxygen species. PDT has been used in several types of cancers including nonmelanoma skin cancer, bladder cancer, esophageal cancer, head and neck cancer, and non-small cell lung cancer (NSCLC). Although it is routinely used in nonmelanoma skin cancer, it has not been widely adopted in other solid cancers due to a lack of clinical data showing the superiority of PDT over other forms of treatment. Singlet oxygen used in PDT can alter the activity of the catalase, which induces immunomodulation through HOCl signaling. The singlet oxygen can induce apoptosis through both the extrinsic and intrinsic pathways. The extrinsic pathway of apoptosis starts with the activation of the Fas receptor by singlet oxygen that leads to activation of the caspase-7 and caspase-3. In the case of the intrinsic pathway, disruption caused by singlet oxygen in the mitochondria membrane leads to the release of cytochrome c, which binds with APAF-1 and procaspase-9, forming a complex, which activates caspase-3. Mechanisms of PDT action can vary according to organelles affected. In the plasma membrane, membrane disruption is caused by the oxidative stress leading to the intake of calcium ions, which causes swelling and rupture of cells due to excess intake of water, whereas disruption of lysosome causes the release of the cathepsins B and D, which cleave Bid into tBid, which changes the mitochondrial outer membrane permeability (MOMP). Oxidative stress causes misfolding of protein in the endoplasmic reticulum. When misfolding exceeds the threshold, it triggers unfolding protein response (UPR), which leads to activation of caspase-9 and caspase-3. Finally, the activation of p38 MAPK works as an alternative pathway for the induction of MOMP.
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12
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Lin L, Wang LV. The emerging role of photoacoustic imaging in clinical oncology. Nat Rev Clin Oncol 2022; 19:365-384. [PMID: 35322236 DOI: 10.1038/s41571-022-00615-3] [Citation(s) in RCA: 90] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2022] [Indexed: 12/13/2022]
Abstract
Clinical oncology can benefit substantially from imaging technologies that reveal physiological characteristics with multiscale observations. Complementing conventional imaging modalities, photoacoustic imaging (PAI) offers rapid imaging (for example, cross-sectional imaging in real time or whole-breast scanning in 10-15 s), scalably high levels of spatial resolution, safe operation and adaptable configurations. Most importantly, this novel imaging modality provides informative optical contrast that reveals details on anatomical, functional, molecular and histological features. In this Review, we describe the current state of development of PAI and the emerging roles of this technology in cancer screening, diagnosis and therapy. We comment on the performance of cutting-edge photoacoustic platforms, and discuss their clinical applications and utility in various clinical studies. Notably, the clinical translation of PAI is accelerating in the areas of macroscopic and mesoscopic imaging for patients with breast or skin cancers, as well as in microscopic imaging for histopathology. We also highlight the potential of future developments in technological capabilities and their clinical implications, which we anticipate will lead to PAI becoming a desirable and widely used imaging modality in oncological research and practice.
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Affiliation(s)
- Li Lin
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Lihong V Wang
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, Pasadena, CA, USA. .,Department of Electrical Engineering, California Institute of Technology, Pasadena, CA, USA.
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Some Natural Photosensitizers and Their Medicinal Properties for Use in Photodynamic Therapy. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27041192. [PMID: 35208984 PMCID: PMC8879555 DOI: 10.3390/molecules27041192] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 12/26/2022]
Abstract
Despite significant advances in early diagnosis and treatment, cancer is one of the leading causes of death. Photodynamic therapy (PDT) is a therapy for the treatment of many diseases, including cancer. This therapy uses a combination of a photosensitizer (PS), light irradiation of appropriate length and molecular oxygen. The photodynamic effect kills cancer cells through apoptosis, necrosis, or autophagy of tumor cells. PDT is a promising approach for eliminating various cancers but is not yet as widely applied in therapy as conventional chemotherapy. Currently, natural compounds with photosensitizing properties are being discovered and identified. A reduced toxicity to healthy tissues and a lower incidence of side effects inspires scientists to seek natural PS for PDT. In this review, several groups of compounds with photoactive properties are presented. The use of natural products has been shown to be a fruitful approach in the discovery of novel pharmaceuticals. This review focused on the anticancer activity of furanocoumarins, polyacetylenes, thiophenes, tolyporphins, curcumins, alkaloid and anthraquinones in relation to the light-absorbing properties. Attention will be paid to their phototoxic and anti-cancer effects on various types of cancer.
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14
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Razmienė B, Vojáčková V, Řezníčková E, Malina L, Dambrauskienė V, Kubala M, Bajgar R, Kolářová H, Žukauskaitė A, Arbačiauskienė E, Šačkus A, Kryštof V. Synthesis of N-aryl-2,6-diphenyl-2H-pyrazolo[4,3-c]pyridin-7-amines and their photodynamic properties in the human skin melanoma cell line G361. Bioorg Chem 2021; 119:105570. [PMID: 34953323 DOI: 10.1016/j.bioorg.2021.105570] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 12/10/2021] [Accepted: 12/14/2021] [Indexed: 01/05/2023]
Abstract
A small series of N-aryl-2,6-diphenyl-2H-pyrazolo[4,3-c]pyridin-7-amines was synthesized from easily accessible 1-phenyl-1H-pyrazol-3-ol via 7-iodo-2,6-diphenyl-2H-pyrazolo[4,3-c]pyridine and 7-iodo-4-methyl-2,6-diphenyl-2H-pyrazolo[4,3-c]pyridine intermediates and their subsequent use in palladium catalyzed Buchwald-Hartwig cross-coupling reaction with various anilines. Majority of the compounds were not significantly cytotoxic to melanoma G361 cells in the dark up to 10 µM concentration, but their activity could be increased by irradiation with visible blue light (414 nm). The most active compound 10 possessed EC50 values of 3.5, 1.6 and 0.9 µM in cells irradiated with 1, 5 and 10 J/cm2, respectively. The treatment caused generation of reactive oxygen species in cells and extensive DNA damage, documented by the comet assay and by detection of phosphorylated histone H2A.X, followed by apoptotic cell death. Our results suggest that N-aryl-2,6-diphenyl-2H-pyrazolo[4,3-c]pyridin-7-amines could serve as a potential source of photosensitizing compounds with anticancer activities.
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Affiliation(s)
- Beatričė Razmienė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, Kaunas LT-50254, Lithuania; Institute of Synthetic Chemistry, Kaunas University of Technology, K. Baršausko g. 59, Kaunas LT-51423, Lithuania
| | - Veronika Vojáčková
- Depatment of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc CZ-78371, Czech Republic
| | - Eva Řezníčková
- Depatment of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc CZ-78371, Czech Republic
| | - Lukáš Malina
- Department of Medical Biophysics, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc CZ-77515, Czech Republic
| | - Vaida Dambrauskienė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, Kaunas LT-50254, Lithuania
| | - Martin Kubala
- Department of Experimental Physics, Faculty of Science, Palacký University, 17. listopadu 12, Olomouc CZ-77146, Czech Republic
| | - Robert Bajgar
- Department of Medical Biophysics, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc CZ-77515, Czech Republic
| | - Hana Kolářová
- Department of Medical Biophysics, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc CZ-77515, Czech Republic
| | - Asta Žukauskaitė
- Department of Chemical Biology, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc CZ-78371, Czech Republic.
| | - Eglė Arbačiauskienė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, Kaunas LT-50254, Lithuania.
| | - Algirdas Šačkus
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, Kaunas LT-50254, Lithuania; Institute of Synthetic Chemistry, Kaunas University of Technology, K. Baršausko g. 59, Kaunas LT-51423, Lithuania
| | - Vladimír Kryštof
- Depatment of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc CZ-78371, Czech Republic
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Ventre S, Shahid H. Endoscopic therapies for Barrett's esophagus. Transl Gastroenterol Hepatol 2021; 6:62. [PMID: 34805584 DOI: 10.21037/tgh.2020.02.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 01/23/2020] [Indexed: 11/06/2022] Open
Abstract
The management of Barrett's esophagus (BE) has evolved as newer technologies and novel methods are developed. Endoscopic mucosal resection (EMR) or endoscopic submucosal dissection (ESD) are the initial interventions of choice for nodular BE, with ESD reserved for endoscopists highly trained in the technique and for larger lesions that would warrant en bloc resection. Resection should then be followed by ablative therapy, which remains first line in the treatment of BE with dysplasia. Although there is a myriad of ablation techniques available to the endoscopist, this review has found that radiofrequency ablation (RFA) continues to have the most robust safety and efficacy data to support its use despite a relatively high rate of recurrence. Cryotherapy and Hybrid-APC appear to be safe and effective as RFA alternatives, but further trials are still needed to directly compare their outcomes to RFA and ultimately guide changes in treatment decisions.
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Affiliation(s)
- Scott Ventre
- Department of Medicine, Rutgers-Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Haroon Shahid
- Division of Gastroenterology & Hepatology, Rutgers-Robert Wood Johnson Medical School, New Brunswick, NJ, USA
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16
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Recent advances in understanding prodrug transport through the SLC15 family of proton-coupled transporters. Biochem Soc Trans 2021; 48:337-346. [PMID: 32219385 PMCID: PMC7200629 DOI: 10.1042/bst20180302] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 02/15/2020] [Accepted: 03/04/2020] [Indexed: 12/28/2022]
Abstract
Solute carrier (SLC) transporters play important roles in regulating the movement of small molecules and ions across cellular membranes. In mammals, they play an important role in regulating the uptake of nutrients and vitamins from the diet, and in controlling the distribution of their metabolic intermediates within the cell. Several SLC families also play an important role in drug transport and strategies are being developed to hijack SLC transporters to control and regulate drug transport within the body. Through the addition of amino acid and peptide moieties several novel antiviral and anticancer agents have been developed that hijack the proton-coupled oligopeptide transporters, PepT1 (SCL15A1) and PepT2 (SLC15A2), for improved intestinal absorption and renal retention in the body. A major goal is to understand the rationale behind these successes and expand the library of prodrug molecules that utilise SLC transporters. Recent co-crystal structures of prokaryotic homologues of the human PepT1 and PepT2 transporters have shed important new insights into the mechanism of prodrug recognition. Here, I will review recent developments in our understanding of ligand recognition and binding promiscuity within the SLC15 family, and discuss current models for prodrug recognition.
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17
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Horgan CC, Bergholt MS, Nagelkerke A, Thin MZ, Pence IJ, Kauscher U, Kalber TL, Stuckey DJ, Stevens MM. Integrated photodynamic Raman theranostic system for cancer diagnosis, treatment, and post-treatment molecular monitoring. Theranostics 2021; 11:2006-2019. [PMID: 33408795 PMCID: PMC7778600 DOI: 10.7150/thno.53031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 11/25/2020] [Indexed: 12/16/2022] Open
Abstract
Theranostics, the combination of diagnosis and therapy, has long held promise as a means to achieving personalised precision cancer treatments. However, despite its potential, theranostics has yet to realise significant clinical translation, largely due the complexity and overriding toxicity concerns of existing theranostic nanoparticle strategies. Methods: Here, we present an alternative nanoparticle-free theranostic approach based on simultaneous Raman spectroscopy and photodynamic therapy (PDT) in an integrated clinical platform for cancer theranostics. Results: We detail the compatibility of Raman spectroscopy and PDT for cancer theranostics, whereby Raman spectroscopic diagnosis can be performed on PDT photosensitiser-positive cells and tissues without inadvertent photosensitiser activation/photobleaching or impaired diagnostic capacity. We further demonstrate that our theranostic platform enables in vivo tumour diagnosis, treatment, and post-treatment molecular monitoring in real-time. Conclusion: This system thus achieves effective theranostic performance, providing a promising new avenue towards the clinical realisation of theranostics.
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Affiliation(s)
- Conor C. Horgan
- Department of Materials, Imperial College London, London SW7 2AZ, UK
- Department of Bioengineering, Imperial College London, London SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - Mads S. Bergholt
- Department of Materials, Imperial College London, London SW7 2AZ, UK
- Department of Bioengineering, Imperial College London, London SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - Anika Nagelkerke
- Department of Materials, Imperial College London, London SW7 2AZ, UK
- Department of Bioengineering, Imperial College London, London SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - May Zaw Thin
- Centre for Advanced Biomedical Imaging, University College London, London WC1E 6DD, UK
| | - Isaac J. Pence
- Department of Materials, Imperial College London, London SW7 2AZ, UK
- Department of Bioengineering, Imperial College London, London SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - Ulrike Kauscher
- Department of Materials, Imperial College London, London SW7 2AZ, UK
- Department of Bioengineering, Imperial College London, London SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - Tammy L. Kalber
- Centre for Advanced Biomedical Imaging, University College London, London WC1E 6DD, UK
| | - Daniel J. Stuckey
- Centre for Advanced Biomedical Imaging, University College London, London WC1E 6DD, UK
| | - Molly M. Stevens
- Department of Materials, Imperial College London, London SW7 2AZ, UK
- Department of Bioengineering, Imperial College London, London SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
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18
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Barrabés S, Ng-Choi I, Martínez MÁ, Manzano BR, Jalón FA, Espino G, Feliu L, Planas M, de Llorens R, Massaguer A. A nucleus-directed bombesin derivative for targeted delivery of metallodrugs to cancer cells. J Inorg Biochem 2020; 212:111214. [PMID: 32919249 DOI: 10.1016/j.jinorgbio.2020.111214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/30/2020] [Accepted: 07/31/2020] [Indexed: 11/19/2022]
Abstract
We have synthesized a set of bombesin derivatives with the aim of exploring their tumor targeting properties to deliver metal-based chemotherapeutics into cancer cells. Peptide QRLGNQWAVGHLL-NH2 (BN3) was selected based on its high internalization in gastrin-releasing peptide receptor (GRPR)-overexpressing PC-3 cells. Three metallopeptides were prepared by incorporating the terpyridine Pt(II) complex [PtCl(cptpy)]Cl (1) (cptpy = 4'-(4-carboxyphenyl)-2,2':6,2″-terpyridine) at the N-terminus of BN3 or at the NƐ- or Nα-amino group of an additional Lys residue (1-BN3, Lys-1-BN3 and 1-Lys-BN3, respectively). 1-Lys-BN3 displayed the best cytotoxic activity (IC50: 19.2 ± 1.7 μM) and similar ability to intercalate into DNA than complex 1. Moreover, the polypyridine Ru(II) complex [Ru(bpy)2)(cmbpy)](PF6)2 (2) (bpy = 2,2'-bipyridine; cmbpy = 4-methyl-2,2'-bipyridine-4'-carboxylic acid), with proven activity as photosensitizer, was coupled to BN3 leading to metallopeptide 2-Lys-BN3. Upon photoactivation, 2-Lys-BN3 displayed 2.5-fold higher cytotoxicity against PC-3 cells (IC50: 7.6 ± 1.0 μM) than complex 2. To enhance the accumulation of the drugs into the cell nucleus, the nuclear localization signal (NLS) PKKKRKV was incorporated at the N-terminus of BN3. NLS-BN3 displayed higher cellular internalization along with nuclear biodistribution. Accordingly, metallopeptides 1-NLS-BN3 and 2-NLS-BN3 showed increased cytotoxicity (IC50: 12.0 ± 1.1 μM and 2.3 ± 1.1 μM). Interestingly, the phototoxic index of 2-NLS-BN3 was 8-fold higher than that of complex 2. Next, the selectivity towards cancer cells was explored using 1BR3.G fibroblasts. Higher selectivity indexes were obtained for 1-NLS-BN3 and 2-NLS-BN3 than for the unconjugated complexes. These results prove NLS-BN3 effective for targeted delivery of metallodrugs to GRPR-overexpressing cells and for enhancing the cytotoxic efficacy of metal-based photosensitizers.
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Affiliation(s)
- Sílvia Barrabés
- Departament de Biologia, Universitat de Girona, Maria Aurèlia Capmany 40, 17003 Girona, Spain
| | - Iteng Ng-Choi
- Departament de Química, Universitat de Girona, Maria Aurèlia Capmany 69, 17003 Girona, Spain
| | - María Ángeles Martínez
- Departament de Química, Universitat de Girona, Maria Aurèlia Capmany 69, 17003 Girona, Spain.
| | - Blanca R Manzano
- Universidad de Castilla-La Mancha, Facultad de Ciencias y Tecnologías Químicas-IRICA, Avda. Camilo J. Cela 10, 13071 Ciudad Real, Spain
| | - Félix A Jalón
- Universidad de Castilla-La Mancha, Facultad de Ciencias y Tecnologías Químicas-IRICA, Avda. Camilo J. Cela 10, 13071 Ciudad Real, Spain
| | - Gustavo Espino
- Departamento de Química, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Lidia Feliu
- Departament de Química, Universitat de Girona, Maria Aurèlia Capmany 69, 17003 Girona, Spain.
| | - Marta Planas
- Departament de Química, Universitat de Girona, Maria Aurèlia Capmany 69, 17003 Girona, Spain.
| | - Rafael de Llorens
- Departament de Biologia, Universitat de Girona, Maria Aurèlia Capmany 40, 17003 Girona, Spain
| | - Anna Massaguer
- Departament de Biologia, Universitat de Girona, Maria Aurèlia Capmany 40, 17003 Girona, Spain.
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19
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Panetta JV, Cvetkovic D, Chen X, Chen L, Ma CMC. Radiodynamic therapy using 15-MV radiation combined with 5-aminolevulinic acid and carbamide peroxide for prostate cancer in vivo. Phys Med Biol 2020; 65:165008. [PMID: 32464613 DOI: 10.1088/1361-6560/ab9776] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Photodynamic therapy has been clinically proven to be effective, but its effect is limited to relatively shallow tumors because of its use of visible light. Radiodynamic therapy (RDT) has therefore been investigated as a means to treat deep-seated tumors. In this study, the treatment effect of a novel form of RDT consisting of radiation combined with 5-aminolevulinic acid (5-ALA) and carbamide peroxide was investigated using a mouse model. Male nude mice were injected bilaterally and subcutaneously with human prostate cancer (PC-3) cells and randomized into 8 treatment groups, consisting of various combinations of 15-MV radiotherapy (RT), 5-ALA, and carbamide peroxide. The treatment effect of a single fraction of treatment was measured by calculating tumor growth delay, monitored using weekly MR scans. The ability of the drugs to be delivered to the tumors was qualitatively measured using 18 F-FDG PET/CT scans. RDT was shown to significantly delay the tumor growth for the mouse model and tumor cell line investigated in this work. Tumors treated with RDT showed a decrease in tumor growth of 24 ± 9% and 21 ± 8% at one and two weeks post-treatment, respectively. Peroxide and 5-ALA did not contribute significantly to tumor growth delay when administered alone or separately with RT. Blood perfusion was shown to be able to deliver agents to the tumors investigated in this work, although uptake of 18 F-FDG was shown to be non-uniform.
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20
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Clinical development and potential of photothermal and photodynamic therapies for cancer. Nat Rev Clin Oncol 2020; 17:657-674. [DOI: 10.1038/s41571-020-0410-2] [Citation(s) in RCA: 723] [Impact Index Per Article: 180.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/17/2020] [Indexed: 02/07/2023]
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21
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Shi S, Vissapragada R, Abi Jaoude J, Huang C, Mittal A, Liu E, Zhong J, Kumar V. Evolving role of biomaterials in diagnostic and therapeutic radiation oncology. Bioact Mater 2020; 5:233-240. [PMID: 32123777 PMCID: PMC7036731 DOI: 10.1016/j.bioactmat.2020.01.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 01/24/2020] [Accepted: 01/30/2020] [Indexed: 01/11/2023] Open
Abstract
Radiation therapy to treat cancer has evolved significantly since the discovery of x-rays. Yet, radiation therapy still has room for improvement in reducing side effects and improving control of cancer. Safer and more effective delivery of radiation has led us to novel techniques and use of biomaterials. Biomaterials in combination with radiation and chemotherapy have started to appear in pre-clinical explorations and clinical applications, with many more on the horizon. Biomaterials have revolutionized the field of diagnostic imaging, and now are being cultivated into the field of theranostics, combination therapy, and tissue protection. This review summarizes recent development of biomaterials in radiation therapy in several application areas.
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Affiliation(s)
- Siyu Shi
- Department of Medicine, Stanford School of Medicine, Stanford, CA, 94305, USA
| | - Ravi Vissapragada
- College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia
| | | | - Caroline Huang
- Department of Medicine, Stanford School of Medicine, Stanford, CA, 94305, USA
| | - Anmol Mittal
- Department of Medicine, Rutgers New Jersey Medical School, Newark, NJ, 07102, USA
| | - Elisa Liu
- Department of Medicine, Stanford School of Medicine, Stanford, CA, 94305, USA
| | - Jim Zhong
- Department of Radiation Oncology, Emory University, Atlanta, GA, 30332, USA
| | - Vivek Kumar
- Department of Restorative Dentistry, Rutgers School of Dental Medicine, Newark, NJ, 07103, USA
- Department of Chemical and Materials Engineering, New Jersey Institute of Technology, 07102, USA
- Department of Biomedical Engineering, New Jersey Institute of Technology, 07102, USA
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22
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Kim MM, Darafsheh A. Light Sources and Dosimetry Techniques for Photodynamic Therapy. Photochem Photobiol 2020; 96:280-294. [PMID: 32003006 DOI: 10.1111/php.13219] [Citation(s) in RCA: 164] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 11/29/2019] [Indexed: 12/19/2022]
Abstract
Effective treatment delivery in photodynamic therapy (PDT) requires coordination of the light source, the photosensitizer, and the delivery device appropriate to the target tissue. Lasers, light-emitting diodes (LEDs), and lamps are the main types of light sources utilized for PDT applications. The choice of light source depends on the target location, photosensitizer used, and light dose to be delivered. Geometry of minimally accessible areas also plays a role in deciding light applicator type. Typically, optical fiber-based devices are used to deliver the treatment light close to the target. The optical properties of tissue also affect the distribution of the treatment light. Treatment light undergoes scattering and absorption in tissue. Most tissue will scatter light, but highly pigmented areas will absorb light, especially at short wavelengths. This review will summarize the basic physics of light sources, and describe methods for determining the dose delivered to the patient.
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Affiliation(s)
- Michele M Kim
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA
| | - Arash Darafsheh
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, MO
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24
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Nascimento BO, Laranjo M, Pereira NAM, Dias-Ferreira J, Piñeiro M, Botelho MF, Pinho e Melo TMVD. Ring-Fused Diphenylchlorins as Potent Photosensitizers for Photodynamic Therapy Applications: In Vitro Tumor Cell Biology and in Vivo Chick Embryo Chorioallantoic Membrane Studies. ACS OMEGA 2019; 4:17244-17250. [PMID: 31656898 PMCID: PMC6811853 DOI: 10.1021/acsomega.9b01865] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 08/21/2019] [Indexed: 05/05/2023]
Abstract
Ring-fused diphenylchlorins as potent low-dose photosensitizers for photodynamic therapy of bladder carcinoma and esophageal adenocarcinoma are described. All studied molecules were very active against HT1376 urinary bladder carcinoma and OE19 esophageal adenocarcinoma cell lines, showing IC50 values below 50 nM. The in vivo evaluation of the more promising photosensitizer, using an OE19 tumor/chick embryo chorioallantoic membrane model, showed a tumor weight regression of 33% with a single photodynamic therapy treatment with the photosensitizer dose as low as 37 ng/embryo.
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Affiliation(s)
| | - Mafalda Laranjo
- Biophysics Institute and Institute for Clinical and
Biomedical Research
(iCBR), area of Environment Genetics and Oncobiology (CIMAGO), Faculty
of Medicine and CNC.IBILI Consortium, University of Coimbra, 3004-548 Coimbra, Portugal
| | - Nelson A. M. Pereira
- CQC
and Department of Chemistry, University
of Coimbra, 3004-535 Coimbra, Portugal
| | - João Dias-Ferreira
- Biophysics Institute and Institute for Clinical and
Biomedical Research
(iCBR), area of Environment Genetics and Oncobiology (CIMAGO), Faculty
of Medicine and CNC.IBILI Consortium, University of Coimbra, 3004-548 Coimbra, Portugal
| | - Marta Piñeiro
- CQC
and Department of Chemistry, University
of Coimbra, 3004-535 Coimbra, Portugal
| | - Maria Filomena Botelho
- Biophysics Institute and Institute for Clinical and
Biomedical Research
(iCBR), area of Environment Genetics and Oncobiology (CIMAGO), Faculty
of Medicine and CNC.IBILI Consortium, University of Coimbra, 3004-548 Coimbra, Portugal
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A Basic Study of Photodynamic Therapy with Glucose-Conjugated Chlorin e6 Using Mammary Carcinoma Xenografts. Cancers (Basel) 2019; 11:cancers11050636. [PMID: 31071967 PMCID: PMC6562844 DOI: 10.3390/cancers11050636] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 05/02/2019] [Accepted: 05/06/2019] [Indexed: 12/27/2022] Open
Abstract
By using the Warburg effect—a phenomenon where tumors consume higher glucose levels than normal cells—on cancer cells to enhance the effect of photodynamic therapy (PDT), we developed a new photosensitizer, glucose-conjugated chlorin e6 (G-Ce6). We analyzed the efficacy of PDT with G-Ce6 against canine mammary carcinoma (CMC) in vitro and in vivo. The pharmacokinetics of G-Ce6 at 2, 5, and 20 mg/kg was examined in normal dogs, whereas its intracellular localization, concentration, and photodynamic effects were investigated in vitro using CMC cells (SNP cells). G-Ce6 (10 mg/kg) was administered in vivo at 5 min or 3 h before laser irradiation to SNP tumor-bearing murine models. The in vitro study revealed that G-Ce6 was mainly localized to the lysosomes. Cell viability decreased in a G-Ce6 concentration- and light intensity-dependent manner in the PDT group. Cell death induced by PDT with G-Ce6 was not inhibited by an apoptosis inhibitor. In the in vivo study, 5-min-interval PDT exhibited greater effects than 3-h-interval PDT. The mean maximum blood concentration and half-life of G-Ce6 (2 mg/kg) were 15.19 ± 4.44 μg/mL and 3.02 ± 0.58 h, respectively. Thus, 5-min-interval PDT with G-Ce6 was considered effective against CMC.
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26
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Cholapranee A, Trindade AJ. Challenges in Endoscopic Therapy of Dysplastic Barrett's Esophagus. ACTA ACUST UNITED AC 2019; 17:32-47. [PMID: 30663018 DOI: 10.1007/s11938-019-00215-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
PURPOSE OF REVIEW Barrett's esophagus (BE) is the only known measurable factor associated with esophageal adenocarcinoma. The development of endoscopic eradication therapy (EET) has transformed the way BE is managed. Given the fairly recent development of EET, its role in BE is still evolving. RECENT FINDINGS This paper discusses the challenges that endoscopists face at the preprocedural, intraprocedural, and postprocedural stages of BE management. These include challenges in risk stratification, dysplasia detection, ablation methods and dosimetry, choice of resection technique, and management of refractory disease. Despite the advances in EET in BE, there remain challenges that this review focuses on. Future research into these challenges will optimize ablation techniques and strategies in the future.
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Affiliation(s)
- Aurada Cholapranee
- Division of Gastroenterology, Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, Long Island Jewish Medical Center, 270-05 76th Avenue, New Hyde Park, NY, 11040, USA
| | - Arvind J Trindade
- Division of Gastroenterology, Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, Long Island Jewish Medical Center, 270-05 76th Avenue, New Hyde Park, NY, 11040, USA.
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Pereira LS, Camacho SA, Malfatti-Gasperini AA, Jochelavicius K, Nobre TM, Oliveira ON, Aoki PH. Evidence of photoinduced lipid hydroperoxidation in Langmuir monolayers containing Eosin Y. Colloids Surf B Biointerfaces 2018; 171:682-689. [DOI: 10.1016/j.colsurfb.2018.08.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/20/2018] [Accepted: 08/03/2018] [Indexed: 01/01/2023]
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Shi R, Lin X, Zhang J, Jin H, Wang A, Wei J. Safety evaluation of repeated intravenous infusion of sinoporphyrin with and without PDT in rats. Photochem Photobiol Sci 2018; 15:1366-1376. [PMID: 27714312 DOI: 10.1039/c6pp00276e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Photodynamic therapy (PDT) is a promising antineoplastic modality in the oncology field. We assessed the safety of repeated intravenous administrations of sinoporphyrin, a porphyrin derivative, with and without illumination in rats. Toxicokinetic studies of single and multiple administrations of sinoporphyrin were also carried out. Sprague-Dawley rats were randomly assigned to the dark-toxicity and PDT groups. Animals in the dark toxicity group received an i.v. infusion of sinoporphyrin at 3 doses: 2 mg kg-1, 6 mg kg-1, and 18 mg kg-1. The PDT group included 2 doses of sinoporphyrin (2 mg kg-1 and 18 mg kg-1), and the rats received 60 J of 630 nm laser illumination 24 h after photosensitizer infusion. The treatments were repeated every 7 days for 5 cycles and were followed by a 14-day recovery period. Systematic analyses were conducted at the end of treatment and recovery periods. Blood samples were obtained 5 min, 30 min, 2 h, 8 h, 24 h, 48 h, 72 h, and 96 h after the first and fifth treatments for toxicokinetic studies. Sinoporphyrin-PDT led to the death of one out of 270 rats; the dead animal had been treated with 18 mg kg-1 sinoporphyrin and died at the end of the fifth PDT treatment. Liver injury, the primary toxicity observed in the study, was identified using biochemical tests, necropsy, and histopathology. Elevated white blood cell and neutrophil counts were found in the rats in both the dark toxicity and PDT groups. Skin lesions at the illumination site were obvious in the PDT group. Pigment deposits were detected in multiple organs such as the liver, spleen, lymph nodes, and ovaries in the 6 mg kg-1 and 18 mg kg-1 groups. No other abnormalities were observed. The toxicokinetic parameters of single and multiple sinoporphyrin administrations were calculated and compared. Repeated sinoporphyrin administrations both alone and in combination with laser illumination were tolerable, and all toxicities were transient. The no observed adverse effect level (NOAEL) for repeated sinoporphyrin administration and sinoporphyrin-PDT was 6 mg kg-1 and 2 mg kg-1, respectively. Further studies are warranted.
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Affiliation(s)
- Rui Shi
- New Drug Safety Evaluation Centre, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, China
| | - Xiaoqi Lin
- Beijing Union-Genius Pharmaceutical Technology Development Co., Ltd, Beijing, China.
| | - Jingxuan Zhang
- Beijing Union-Genius Pharmaceutical Technology Development Co., Ltd, Beijing, China.
| | - Hongtao Jin
- New Drug Safety Evaluation Centre, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, China
| | - Aiping Wang
- New Drug Safety Evaluation Centre, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, China and Beijing Union-Genius Pharmaceutical Technology Development Co., Ltd, Beijing, China.
| | - Jinfeng Wei
- New Drug Safety Evaluation Centre, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, China and Beijing Union-Genius Pharmaceutical Technology Development Co., Ltd, Beijing, China.
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Gheewala T, Skwor T, Munirathinam G. Photosensitizers in prostate cancer therapy. Oncotarget 2018; 8:30524-30538. [PMID: 28430624 PMCID: PMC5444762 DOI: 10.18632/oncotarget.15496] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 02/06/2017] [Indexed: 01/17/2023] Open
Abstract
The search for new therapeutics for the treatment of prostate cancer is ongoing with a focus on the balance between the harms and benefits of treatment. New therapies are being constantly developed to offer treatments similar to radical therapies, with limited side effects. Photodynamic therapy (PDT) is a promising strategy in delivering focal treatment in primary as well as post radiotherapy prostate cancer. PDT involves activation of a photosensitizer (PS) by appropriate wavelength of light, generating transient levels of reactive oxygen species (ROS). Several photosensitizers have been developed with a focus on treating prostate cancer like mTHPC, motexafin lutetium, padoporfin and so on. This article will review newly developed photosensitizers under clinical trials for the treatment of prostate cancer, along with the potential advantages and disadvantages in delivering focal therapy.
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Affiliation(s)
- Taher Gheewala
- Department of Biomedical Sciences, University of Illinois, College of Medicine, Rockford, IL, USA
| | - Troy Skwor
- Department of Chemical and Biological Sciences, Rockford University, Rockford, IL, USA
| | - Gnanasekar Munirathinam
- Department of Biomedical Sciences, University of Illinois, College of Medicine, Rockford, IL, USA
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Gheewala T, Skwor T, Munirathinam G. Photodynamic therapy using pheophorbide and 670 nm LEDs exhibits anti-cancer effects in-vitro in androgen dependent prostate cancer. Photodiagnosis Photodyn Ther 2018; 21:130-137. [DOI: 10.1016/j.pdpdt.2017.10.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 09/27/2017] [Accepted: 10/31/2017] [Indexed: 01/10/2023]
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Mohammad-Hadi L, MacRobert AJ, Loizidou M, Yaghini E. Photodynamic therapy in 3D cancer models and the utilisation of nanodelivery systems. NANOSCALE 2018; 10:1570-1581. [PMID: 29308480 DOI: 10.1039/c7nr07739d] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Photodynamic therapy (PDT) is the subject of considerable research in experimental cancer models mainly for the treatment of solid cancerous tumours. Recent studies on the use of nanoparticles as photosensitiser carriers have demonstrated improved PDT efficacy in experimental cancer therapy. Experiments typically employ conventional monolayer cell culture but there is increasing interest in testing PDT using three dimensional (3D) cancer models. 3D cancer models can better mimic in vivo models than 2D cultures by for example enabling cancer cell interactions with a surrounding extracellular matrix which should enable the treatment to be optimised prior to in vivo studies. The aim of this review is to discuss recent research using PDT in different types of 3D cancer models, from spheroids to nano-fibrous scaffolds, using a range of photosensitisers on their own or incorporated in nanoparticles and nanodelivery systems.
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Affiliation(s)
- Layla Mohammad-Hadi
- Division of Surgery and Interventional Science, Department of Nanotechnology, University College London, Royal Free Campus, Rowland Hill St, London NW3 2PE, UK.
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Yan H, Chen Y, Zhang J, Liu W, Chen R. The Role of Free Radicals in the Photodynamic Treatment of Fibrotic Skin Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 923:69-74. [PMID: 27526127 DOI: 10.1007/978-3-319-38810-6_10] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
The first derivatives of gelatin and type I collagen fluorescence spectra were characterized in order to describe the effect of free radicals on pyridinoline (PYD) cross-links. The different gas saturation conditions were used to investigate the effect of different free radicals. An analysis of first derivative fluorescence spectra suggests that PYD cross-link fluorescence emission is composed of three peaks in gelatin, but only two in type I collagen. The PYD cross-link was photo-degraded more than other gases in the presence of O2. This suggests that the singlet oxygen ((1)O2) plays a key role when using photodynamic therapy to treat skin fibrosis disease with Hypocrellin B (HB).
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Affiliation(s)
- Heping Yan
- Key Laboratory of Natural Pharmaceutical & Chemical Biology of Yunnan Province, Honghe University, Mengzi, Yunnan, Province, P. R. China.,School of science, Honghe University, Mengzi, Yunnan, Province, P. R. China
| | - Yashun Chen
- Key Laboratory of Natural Pharmaceutical & Chemical Biology of Yunnan Province, Honghe University, Mengzi, Yunnan, Province, P. R. China.,School of science, Honghe University, Mengzi, Yunnan, Province, P. R. China
| | - Jucheng Zhang
- Key Laboratory of Natural Pharmaceutical & Chemical Biology of Yunnan Province, Honghe University, Mengzi, Yunnan, Province, P. R. China. .,School of science, Honghe University, Mengzi, Yunnan, Province, P. R. China.
| | - Wei Liu
- Key Laboratory of Natural Pharmaceutical & Chemical Biology of Yunnan Province, Honghe University, Mengzi, Yunnan, Province, P. R. China.,School of science, Honghe University, Mengzi, Yunnan, Province, P. R. China
| | - Rui Chen
- Key Laboratory of Natural Pharmaceutical & Chemical Biology of Yunnan Province, Honghe University, Mengzi, Yunnan, Province, P. R. China.,School of science, Honghe University, Mengzi, Yunnan, Province, P. R. China
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Lin HD, Li KT, Duan QQ, Chen Q, Tian S, Chu ESM, Bai DQ. The effect of aloe-emodin-induced photodynamic activity on the apoptosis of human gastric cancer cells: A pilot study. Oncol Lett 2017; 13:3431-3436. [PMID: 28521449 PMCID: PMC5431202 DOI: 10.3892/ol.2017.5915] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Accepted: 02/07/2017] [Indexed: 02/06/2023] Open
Abstract
The aim of the present study was to explore the effect of aloe-emodin (AE)-induced photodynamic activity in human gastric cancer cells. AE was used as a photosensitizer to explore the effect of photodynamic therapy (PDT) in human gastric cancer cells (SGC-7901). An MTT assay was used to detect the effect of AE-induced PDT in optimal concentrations and illumination energy densities in human gastric cancer cells. Following AE-induced PDT, morphological changes of the cells and the rate of cell death were evaluated by TUNEL assay and flow cytometry, respectively. The expression levels of caspase-9 and caspase-3 were determined by western blot analysis. The AE and AE-induced PDT demonstrated a significant inhibitive effect on the proliferation of human gastric cancer cells in dose-dependent and energy-dependent manners. For subsequent experiments, 10 µM AE and 12.8 J/cm2 illumination energy density were used. Typical morphological changes of apoptosis were observed in the cells using a TUNEL assay 12 h subsequent to AE-induced PDT. The percentage of apoptotic cells treated with AE-induced PDT significantly increased when compared with the control group, the 10 µM AE group and the illumination group (P<0.05). Upregulation of caspase-9 and caspase-3 protein levels was also observed following AE-induced PDT. The present study revealed that 10 µM AE-induced PDT had an inhibitory effect on human gastric cancer cells, and it may induce cell apoptosis by upregulating caspase-9 and caspase-3, which indicated that the mitochondrial pathway may be involved. AE-induced PDT has the potential to be a novel therapy for the treatment of human gastric cancer. However, further investigations are required.
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Affiliation(s)
- Hai-Dan Lin
- Department of Rehabilitation, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Kai-Ting Li
- Department of Rehabilitation, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Qin-Qin Duan
- Department of Gastroenterology, Chinese Medicine Hospital of Longquan, Chengdu, Sichuan 610100, P.R. China
| | - Qing Chen
- Department of Rehabilitation, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Shi Tian
- Department of Rehabilitation, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | | | - Ding-Qun Bai
- Department of Rehabilitation, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
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Kuzyniak W, Schmidt J, Glac W, Berkholz J, Steinemann G, Hoffmann B, Ermilov EA, Gürek AG, Ahsen V, Nitzsche B, Höpfner M. Novel zinc phthalocyanine as a promising photosensitizer for photodynamic treatment of esophageal cancer. Int J Oncol 2017; 50:953-963. [PMID: 28098886 DOI: 10.3892/ijo.2017.3854] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 12/19/2016] [Indexed: 12/21/2022] Open
Abstract
Photodynamic therapy (PDT) has gathered much attention in the field of cancer treatment and is increasingly used as an alternative solution for esophageal cancer therapy. However, there is a constant need for improving the effectiveness and tolerability of the applied photosensitizers (PS). Here, we propose tetra-triethyleneoxysulfonyl substituted zinc phthalocyanine (ZnPc) as a promising PS for photodynamic treatment of esophageal cancer. ZnPc-induced phototoxicity was studied in two human esophageal cancer cell lines: OE-33 (adenocarcinoma) and Kyse-140 (squamous cell carcinoma). In vitro studies focused on the uptake and intracellular distribution of the novel ZnPc as well as on its growth inhibitory potential, reactive oxygen species (ROS) formation and the induction of apoptosis. The chicken chorioallantoic membrane assay (CAM assay) and studies on native Wistar rats were employed to determine the antineoplastic and antiangiogenic activity of ZnPc-PDT as well as the tolerability and safety of non-photoactivated ZnPc in vivo. ZnPc was taken up by cancer cells in a dose- and time-dependent manner and showed a homogeneous cytoplasmic distribution. Photoactivation of ZnPc-loaded (1-10 µM) cells led to a dose-dependent growth inhibition of esophageal adenocarcinoma and squamous cell carcinoma cells of >90%. The antiproliferative effect was based on ROS-induced cytotoxicity and the induction of mitochondria-driven apoptosis. In vivo studies on esophageal tumor plaques grown on the CAM revealed pronounced antiangiogenic and antineoplastic effects. ZnPc-PDT caused long-lasting changes in the vascular architecture and a marked reduction of tumor feeding blood vessels. Animal studies confirmed the good tolerability and systemic safety of ZnPc, as no changes in immunological, behavioral and organic parameters could be detected upon treatment with the non-photoactivated ZnPc. Our findings show the extraordinary photoactive potential of the novel ZnPc as a photosensitizer for PDT of esophageal cancer.
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Affiliation(s)
- Weronika Kuzyniak
- Institute of Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Jacob Schmidt
- Institute of Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Wojciech Glac
- Department of Animal and Human Physiology, Faculty of Biology, University of Gdansk, Gdansk, Poland
| | - Janine Berkholz
- Institute of Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Gustav Steinemann
- Institute of Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Björn Hoffmann
- Institute of Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Eugeny A Ermilov
- Federal Institute for Materials Research and Testing (BAM), Division Biophotonics, Berlin, Germany
| | - Ayşe Gül Gürek
- Department of Chemistry, Gebze Technical University, Gebze, Turkey
| | - Vefa Ahsen
- Department of Chemistry, Gebze Technical University, Gebze, Turkey
| | - Bianca Nitzsche
- Institute of Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Michael Höpfner
- Institute of Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
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35
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Shi R, Li C, Jiang Z, Li W, Wang A, Wei J. Preclinical Study of Antineoplastic Sinoporphyrin Sodium-PDT via In Vitro and In Vivo Models. Molecules 2017; 22:molecules22010112. [PMID: 28085075 PMCID: PMC6155726 DOI: 10.3390/molecules22010112] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 12/26/2016] [Accepted: 01/04/2017] [Indexed: 12/17/2022] Open
Abstract
Photodynamic therapy (PDT) investigations have seen stable increases and the development of new photosensitizers is a heated topic. Sinoporphyrin sodium is a new photosensitizer isolated from Photofrin. This article evaluated its anticancer effects by clonogenic assays, MTT assays and xenograft experiments in comparison to Photofrin. The clonogenicity inhibition rates of sinoporphyrin sodium-PDT towards four human cancer cell lines ranged from 85.5% to 94.2% at 0.5 μg/mL under 630 nm irradiation of 30 mW/cm² for 180 s. For MTT assays, the IC50 ranges of Photofrin-PDT and sinoporphyrin sodium-PDT towards human cancer cells were 0.3 μg/mL to 5.5 μg/mL and 0.1 μg/mL to 0.8 μg/mL under the same irradiation conditions, respectively. The IC50 values of Photofrin-PDT and sinoporphyrin sodium-PDT towards human skin cells, HaCaT, were 10 μg/mL and 1.0 μg/mL, respectively. Esophagus carcinoma and hepatoma xenograft models were established to evaluate the in vivo antineoplastic efficacy. A control group, Photofrin-PDT group (20 mg/kg) and sinoporphyrin sodium group at three doses, 0.5 mg/kg, 1 mg/kg and 2 mg/kg, were set. Mice were injected with photosensitizers 24 h before 60 J 630 nm laser irradiation. The tumor weight inhibition ratio of 2 mg/kg sinoporphyrin sodium-PDT reached approximately 90%. Besides, the tumor growths were significantly slowed down by 2 mg/kg sinoporphyrin sodium-PDT, which was equivalent to 20 mg/kg Photofrin-PDT. In sum, sinoporphyrin sodium-PDT showed great anticancer efficacy and with a smaller dose compared with Photofrin. Further investigations are warranted.
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Affiliation(s)
- Rui Shi
- New Drug Safety Evaluation Centre, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Chao Li
- New Drug Safety Evaluation Centre, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Zhihuan Jiang
- New Drug Safety Evaluation Centre, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Wanfang Li
- New Drug Safety Evaluation Centre, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Aiping Wang
- New Drug Safety Evaluation Centre, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Jinfeng Wei
- New Drug Safety Evaluation Centre, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
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Dondi R, Yaghini E, Tewari KM, Wang L, Giuntini F, Loizidou M, MacRobert AJ, Eggleston IM. Flexible synthesis of cationic peptide-porphyrin derivatives for light-triggered drug delivery and photodynamic therapy. Org Biomol Chem 2016; 14:11488-11501. [PMID: 27886311 PMCID: PMC5166568 DOI: 10.1039/c6ob02135b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 11/14/2016] [Indexed: 01/04/2023]
Abstract
Efficient syntheses of cell-penetrating peptide-porphyrin conjugates are described using a variety of bioconjugation chemistries. This provides a flexible means to convert essentially hydrophobic tetrapyrolle photosensitisers into amphiphilic derivatives which are well-suited for use in light-triggered drug delivery by photochemical internalisation (PCI) and targeted photodynamic therapy (PDT).
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Affiliation(s)
- R Dondi
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK.
| | - E Yaghini
- UCL Division of Surgery and Interventional Science, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PF, UK
| | - K M Tewari
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK.
| | - L Wang
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK. and School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - F Giuntini
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK.
| | - M Loizidou
- UCL Division of Surgery and Interventional Science, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PF, UK
| | - A J MacRobert
- UCL Division of Surgery and Interventional Science, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PF, UK
| | - I M Eggleston
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK.
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37
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Mao A. Interventional Therapy of Esophageal Cancer. Gastrointest Tumors 2016; 3:59-68. [PMID: 27904858 DOI: 10.1159/000447512] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 06/08/2016] [Indexed: 12/15/2022] Open
Abstract
Esophageal cancer (EC) is the fourth leading cause of cancer death in China. Despite a lot of advances in diagnosis and therapy, the survival rate of patients with EC is low. There is urgent need for a variety of methods and techniques to improve the survival time and alleviate the lesions of EC. Nowadays, alternative and less invasive approaches to the treatment of ECs are being identified. Here, we review several main interventional methods at different stages of EC, including endoscopic resection, stent placement, arterial infusion, photodynamic therapy, and radiofrequency ablation. This review will focus on the indications, methods, clinical outcomes, and complications of these methods, which may help guide the way forward.
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Affiliation(s)
- Aiwu Mao
- Department of Interventional Radiology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
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38
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The potential of photodynamic therapy (PDT)-Experimental investigations and clinical use. Biomed Pharmacother 2016; 83:912-929. [PMID: 27522005 DOI: 10.1016/j.biopha.2016.07.058] [Citation(s) in RCA: 123] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 07/30/2016] [Accepted: 07/31/2016] [Indexed: 12/13/2022] Open
Abstract
Photodynamic therapy (PDT) is an intensively studied part of medicine based on free radicals. These reactive species, extremely harmful for whole human organism, are used for eradication numerous diseases. Specific structure of ill tissues causes accumulation free radicals inside them without attack remaining healthy tissues. A rapid development of medicine and scientific research has led to extension of PDT towards treatment many diseases such as cancer, herpes, acne and based on antimicrobials. The presented review article is focused on the aforementioned disorders with accurate analysis of the newest available scientific achievements. The discussed cases explicitly indicate on high efficacy of the therapy. In most cases, free radicals turned out to be solution of many afflictions. Photodynamic therapy can be considered as promising treatment with comparable effectiveness but without side effects characteristic for chemotherapy.
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Murray KS, Winter AG, Corradi RB, LaRosa S, Jebiwott S, Somma A, Takaki H, Srimathveeravalli G, Lepherd M, Monette S, Kim K, Scherz A, Coleman JA. Treatment Effects of WST11 Vascular Targeted Photodynamic Therapy for Urothelial Cell Carcinoma in Swine. J Urol 2016; 196:236-43. [PMID: 26860792 PMCID: PMC4914469 DOI: 10.1016/j.juro.2016.01.107] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/25/2016] [Indexed: 12/21/2022]
Abstract
PURPOSE Surgical management of upper tract urothelial carcinoma requires kidney and ureter removal, compromising renal function. Nonsurgical alternatives have potentially prohibitive safety concerns. We examined the feasibility and safety of ablation of the ureter and renal pelvis using endoluminal vascular targeted photodynamic therapy in a porcine model. We also report the efficacy of WST11 vascular targeted photodynamic therapy in a murine model. MATERIALS AND METHODS After receiving approval we performed a total of 28 endoluminal ablations in the ureters and renal pelvis of 18 swine. Intravenous infusion of WST11 (4 mg/kg) followed by 10-minute laser illumination was done via percutaneous access or a retrograde ureteroscopic approach. Animals were followed clinically with laboratory testing, imaging and histology, which were evaluated at several postablation time points. A murine xenograft was created with the 5637 human urothelial cell carcinoma line to determine sensitivity to this therapy. RESULTS At 24 hours 50 mW/cm laser fluence produced superficial necrosis of the ureter. Deeper necrosis penetrating the muscularis propria or adventitia was produced by treatment with 200 mW/cm in the ureter and the renal pelvis. At 4 weeks superficial urothelium had regenerated over the treatment site. No symptomatic obstruction, clinically relevant hydronephrosis or abnormality of laboratory testing was noted up to 4 weeks. Of the mice 80% had no evidence of tumor 19 days after WST11 vascular targeted photodynamic therapy. CONCLUSIONS Urothelial cell carcinoma appears to be sensitive to WST11 vascular targeted photodynamic therapy. The depth of WST11 vascular targeted photodynamic therapy treatment effects can be modulated in a dose dependent manner by titrating light intensity. Moreover, when applied to the porcine upper urinary tract, this treatment modality is feasible via antegrade and retrograde access.
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Affiliation(s)
- Katie S Murray
- Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Ashley G Winter
- Center of Comparative Medicine and Pathology, Memorial Sloan Kettering Cancer Center, New York, New York; Department of Urology, New York Presbyterian Hospital, New York, New York; Weill-Cornell Medical College, New York Presbyterian Hospital, New York, New York; New York Presbyterian Hospital, New York, New York; Rockefeller University, New York, New York
| | - Renato Beluco Corradi
- Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Stephen LaRosa
- Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Sylvia Jebiwott
- Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Alexander Somma
- Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Haruyuki Takaki
- Interventional Radiology Service, Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
| | | | - Michelle Lepherd
- Laboratory of Comparative Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Sebastien Monette
- Laboratory of Comparative Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Kwanghee Kim
- Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Avigdor Scherz
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Jonathan A Coleman
- Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York; Department of Urology, New York Presbyterian Hospital, New York, New York.
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40
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Kimm SY, Tarin TV, Monette S, Srimathveeravalli G, Gerber D, Durack JC, Solomon SB, Scardino PT, Scherz A, Coleman J. Nonthermal Ablation by Using Intravascular Oxygen Radical Generation with WST11: Dynamic Tissue Effects and Implications for Focal Therapy. Radiology 2016; 281:109-18. [PMID: 26986047 DOI: 10.1148/radiol.2016141571] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Purpose To examine the hypothesis that vascular-targeted photodynamic therapy (VTP) with WST11 and clinically relevant parameters can be used to ablate target tissues in a non-tumor-bearing large-animal model while selectively sparing blood vessels and collagen. Materials and Methods By using an institutional animal care and use committee-approved protocol, 68 ablations were performed in the kidneys (cortex and medulla) and livers of 27 adult pigs. Posttreatment evaluation was conducted with contrast material-enhanced computed tomography in the live animals at 24 hours. Immunohistochemistry was evaluated and histologic examination with hematoxylin-eosin staining was performed at 4 hours, 24 hours, and 7 days. Intravenous infusion of WST11 (4 mg per kilogram of body weight) was followed by using near-infrared illumination (753 nm for 20 minutes) through optical fibers prepositioned in target tissues by using a fixed template. Treated areas were scanned, measured, and statistically analyzed by using the Student t test and two-way analysis of variance. Results Focal WST11 VTP treatment in the liver and kidney by using a single optical fiber resulted in well-demarcated cylindrical zones of nonthermal necrosis concentrically oriented around the light-emitting diffuser, with no intervening viable parenchymal cells. The radius of ablated tissue increased from approximately 5 mm at 150 mW to approximately 7 mm at 415 mW (P < .01). Illumination through fiber triads at 1-cm separation resulted in confluent homogeneous necrosis. Patterns of acute injury within 24 hours were consistent with microcirculatory flow arrest and collagen preservation (demonstrated with trichrome staining). In the peripheral ablation zone, blood vessels at least 40 μm in diameter were selectively preserved and remained functional at 7 days. Ablated tissues exhibited progressive fibrosis and chronic inflammatory cell infiltrates. No histologic changes consistent with thermal injury were observed in blood vessels or collagen. The renal hilum and collecting system did not show treatment effect, despite treatment proximity. Conclusion WST11 VTP induces nonthermal tissue ablation in target tissue while preserving critical organ structures and bystander blood vessels within solid organs. (©) RSNA, 2016 Online supplemental material is available for this article.
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Affiliation(s)
- Simon Y Kimm
- From the Urology Service, Department of Surgery (S.Y.K., D.G., P.T.S., J.C.), Tri-Institutional Laboratory of Comparative Pathology, Rockefeller University, Weill Cornell Medical College (S.M.), Radiochemistry and Imaging Sciences Service (G.S.), and Interventional Radiology Service (J.C.D., S.B.S.), Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065; Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, Pa (T.V.T.); and Department of Plant Sciences, Weizmann Institute of Science, Rehovot, Israel (A.S.)
| | - Tatum V Tarin
- From the Urology Service, Department of Surgery (S.Y.K., D.G., P.T.S., J.C.), Tri-Institutional Laboratory of Comparative Pathology, Rockefeller University, Weill Cornell Medical College (S.M.), Radiochemistry and Imaging Sciences Service (G.S.), and Interventional Radiology Service (J.C.D., S.B.S.), Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065; Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, Pa (T.V.T.); and Department of Plant Sciences, Weizmann Institute of Science, Rehovot, Israel (A.S.)
| | - Sébastien Monette
- From the Urology Service, Department of Surgery (S.Y.K., D.G., P.T.S., J.C.), Tri-Institutional Laboratory of Comparative Pathology, Rockefeller University, Weill Cornell Medical College (S.M.), Radiochemistry and Imaging Sciences Service (G.S.), and Interventional Radiology Service (J.C.D., S.B.S.), Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065; Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, Pa (T.V.T.); and Department of Plant Sciences, Weizmann Institute of Science, Rehovot, Israel (A.S.)
| | - Govindarajan Srimathveeravalli
- From the Urology Service, Department of Surgery (S.Y.K., D.G., P.T.S., J.C.), Tri-Institutional Laboratory of Comparative Pathology, Rockefeller University, Weill Cornell Medical College (S.M.), Radiochemistry and Imaging Sciences Service (G.S.), and Interventional Radiology Service (J.C.D., S.B.S.), Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065; Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, Pa (T.V.T.); and Department of Plant Sciences, Weizmann Institute of Science, Rehovot, Israel (A.S.)
| | - Daniel Gerber
- From the Urology Service, Department of Surgery (S.Y.K., D.G., P.T.S., J.C.), Tri-Institutional Laboratory of Comparative Pathology, Rockefeller University, Weill Cornell Medical College (S.M.), Radiochemistry and Imaging Sciences Service (G.S.), and Interventional Radiology Service (J.C.D., S.B.S.), Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065; Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, Pa (T.V.T.); and Department of Plant Sciences, Weizmann Institute of Science, Rehovot, Israel (A.S.)
| | - Jeremy C Durack
- From the Urology Service, Department of Surgery (S.Y.K., D.G., P.T.S., J.C.), Tri-Institutional Laboratory of Comparative Pathology, Rockefeller University, Weill Cornell Medical College (S.M.), Radiochemistry and Imaging Sciences Service (G.S.), and Interventional Radiology Service (J.C.D., S.B.S.), Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065; Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, Pa (T.V.T.); and Department of Plant Sciences, Weizmann Institute of Science, Rehovot, Israel (A.S.)
| | - Stephen B Solomon
- From the Urology Service, Department of Surgery (S.Y.K., D.G., P.T.S., J.C.), Tri-Institutional Laboratory of Comparative Pathology, Rockefeller University, Weill Cornell Medical College (S.M.), Radiochemistry and Imaging Sciences Service (G.S.), and Interventional Radiology Service (J.C.D., S.B.S.), Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065; Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, Pa (T.V.T.); and Department of Plant Sciences, Weizmann Institute of Science, Rehovot, Israel (A.S.)
| | - Peter T Scardino
- From the Urology Service, Department of Surgery (S.Y.K., D.G., P.T.S., J.C.), Tri-Institutional Laboratory of Comparative Pathology, Rockefeller University, Weill Cornell Medical College (S.M.), Radiochemistry and Imaging Sciences Service (G.S.), and Interventional Radiology Service (J.C.D., S.B.S.), Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065; Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, Pa (T.V.T.); and Department of Plant Sciences, Weizmann Institute of Science, Rehovot, Israel (A.S.)
| | - Avigdor Scherz
- From the Urology Service, Department of Surgery (S.Y.K., D.G., P.T.S., J.C.), Tri-Institutional Laboratory of Comparative Pathology, Rockefeller University, Weill Cornell Medical College (S.M.), Radiochemistry and Imaging Sciences Service (G.S.), and Interventional Radiology Service (J.C.D., S.B.S.), Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065; Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, Pa (T.V.T.); and Department of Plant Sciences, Weizmann Institute of Science, Rehovot, Israel (A.S.)
| | - Jonathan Coleman
- From the Urology Service, Department of Surgery (S.Y.K., D.G., P.T.S., J.C.), Tri-Institutional Laboratory of Comparative Pathology, Rockefeller University, Weill Cornell Medical College (S.M.), Radiochemistry and Imaging Sciences Service (G.S.), and Interventional Radiology Service (J.C.D., S.B.S.), Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065; Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, Pa (T.V.T.); and Department of Plant Sciences, Weizmann Institute of Science, Rehovot, Israel (A.S.)
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Tang W, Zhen Z, Wang M, Wang H, Chuang YJ, Zhang W, Wang GD, Todd T, Cowger T, Chen H, Liu L, Li Z, Xie J. Red Blood Cell-Facilitated Photodynamic Therapy for Cancer Treatment. ADVANCED FUNCTIONAL MATERIALS 2016; 26:1757-1768. [PMID: 31749670 PMCID: PMC6867707 DOI: 10.1002/adfm.201504803] [Citation(s) in RCA: 133] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Photodynamic therapy (PDT) is a promising treatment modality for cancer management. So far, most PDT studies have focused on delivery of photosensitizers to tumors. O2, another essential component of PDT, is not artificially delivered but taken from the biological milieu. However, cancer cells demand a large amount of O2 to sustain their growth and that often leads to low O2 levels in tumors. The PDT process may further potentiate the oxygen deficiency, and in turn, adversely affect the PDT efficiency. In the present study, a new technology called red blood cell (RBC)-facilitated PDT, or RBC-PDT, is introduced that can potentially solve the issue. As the name tells, RBC-PDT harnesses erythrocytes, an O2 transporter, as a carrier for photosensitizers. Because photosensitizers are adjacent to a carry-on O2 source, RBC-PDT can efficiently produce 1O2 even under low oxygen conditions. The treatment also benefits from the long circulation of RBCs, which ensures a high intraluminal concentration of photosensitizers during PDT and hence maximizes damage to tumor blood vessels. When tested in U87MG subcutaneous tumor models, RBC-PDT shows impressive tumor suppression (76.7%) that is attributable to the codelivery of O2 and photosensitizers. Overall, RBC-PDT is expected to find wide applications in modern oncology.
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Affiliation(s)
- Wei Tang
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
| | - Zipeng Zhen
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
| | - Mengzhe Wang
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA,
| | - Hui Wang
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA,
| | - Yen-Jun Chuang
- College of Engineering, University of Georgia, Athens, GA 30602, USA
| | - Weizhong Zhang
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
| | - Geoffrey D Wang
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
| | - Trever Todd
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
| | - Taku Cowger
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
| | - Hongmin Chen
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
| | - Lin Liu
- Department of Radiology, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, China
| | - Zibo Li
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA,
| | - Jin Xie
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
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Weijer R, Broekgaarden M, Krekorian M, Alles LK, van Wijk AC, Mackaaij C, Verheij J, van der Wal AC, van Gulik TM, Storm G, Heger M. Inhibition of hypoxia inducible factor 1 and topoisomerase with acriflavine sensitizes perihilar cholangiocarcinomas to photodynamic therapy. Oncotarget 2016; 7:3341-56. [PMID: 26657503 PMCID: PMC4823110 DOI: 10.18632/oncotarget.6490] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 11/16/2015] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Photodynamic therapy (PDT) induces tumor cell death by oxidative stress and hypoxia but also survival signaling through activation of hypoxia-inducible factor 1 (HIF-1). Since perihilar cholangiocarcinomas are relatively recalcitrant to PDT, the aims were to (1) determine the expression levels of HIF-1-associated proteins in human perihilar cholangiocarcinomas, (2) investigate the role of HIF-1 in PDT-treated human perihilar cholangiocarcinoma cells, and (3) determine whether HIF-1 inhibition reduces survival signaling and enhances PDT efficacy. RESULTS Increased expression of VEGF, CD105, CD31/Ki-67, and GLUT-1 was confirmed in human perihilar cholangiocarcinomas. PDT with liposome-delivered zinc phthalocyanine caused HIF-1α stabilization in SK-ChA-1 cells and increased transcription of HIF-1α downstream genes. Acriflavine was taken up by SK-ChA-1 cells and translocated to the nucleus under hypoxic conditions. Importantly, pretreatment of SK-ChA-1 cells with acriflavine enhanced PDT efficacy via inhibition of HIF-1 and topoisomerases I and II. METHODS The expression of VEGF, CD105, CD31/Ki-67, and GLUT-1 was determined by immunohistochemistry in human perihilar cholangiocarcinomas. In addition, the response of human perihilar cholangiocarcinoma (SK-ChA-1) cells to PDT with liposome-delivered zinc phthalocyanine was investigated under both normoxic and hypoxic conditions. Acriflavine, a HIF-1α/HIF-1β dimerization inhibitor and a potential dual topoisomerase I/II inhibitor, was evaluated for its adjuvant effect on PDT efficacy. CONCLUSIONS HIF-1, which is activated in human hilar cholangiocarcinomas, contributes to tumor cell survival following PDT in vitro. Combining PDT with acriflavine pretreatment improves PDT efficacy in cultured cells and therefore warrants further preclinical validation for therapy-recalcitrant perihilar cholangiocarcinomas.
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MESH Headings
- Acriflavine/pharmacology
- Anti-Infective Agents, Local/pharmacology
- Apoptosis
- Bile Duct Neoplasms/metabolism
- Bile Duct Neoplasms/pathology
- Bile Duct Neoplasms/therapy
- Blotting, Western
- Cell Proliferation
- DNA Topoisomerases, Type I/chemistry
- DNA Topoisomerases, Type I/genetics
- DNA Topoisomerases, Type I/metabolism
- Flow Cytometry
- Humans
- Hypoxia
- Hypoxia-Inducible Factor 1, alpha Subunit/antagonists & inhibitors
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Klatskin Tumor/metabolism
- Klatskin Tumor/pathology
- Klatskin Tumor/therapy
- Photochemotherapy
- RNA, Messenger/genetics
- Radiation-Sensitizing Agents/pharmacology
- Real-Time Polymerase Chain Reaction
- Reverse Transcriptase Polymerase Chain Reaction
- Signal Transduction
- Tumor Cells, Cultured
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Affiliation(s)
- Ruud Weijer
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Department of Controlled Drug Delivery, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, 7500 AE Enschede, The Netherlands
| | - Mans Broekgaarden
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Massis Krekorian
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Lindy K. Alles
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Albert C. van Wijk
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Claire Mackaaij
- Department of Pathology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Joanne Verheij
- Department of Pathology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Allard C. van der Wal
- Department of Pathology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Thomas M. van Gulik
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Gert Storm
- Department of Controlled Drug Delivery, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, 7500 AE Enschede, The Netherlands
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, 3584 CG Utrecht, The Netherlands
| | - Michal Heger
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, 3584 CG Utrecht, The Netherlands
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Kozarek RA. Photodynamic therapy in esophageal cancer. GASTROINTESTINAL INTERVENTION 2015. [DOI: 10.18528/gii1400008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Li KT, Duan QQ, Chen Q, He JW, Tian S, Lin HD, Gao Q, Bai DQ. The effect of aloe emodin-encapsulated nanoliposome-mediated r-caspase-3 gene transfection and photodynamic therapy on human gastric cancer cells. Cancer Med 2015; 5:361-9. [PMID: 26686868 PMCID: PMC4735781 DOI: 10.1002/cam4.584] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 09/26/2015] [Accepted: 10/11/2015] [Indexed: 11/11/2022] Open
Abstract
Gastric carcinoma (GC) has high incidence and mortality rates in China. Surgery and chemotherapy are the main treatments. Photodynamic therapy (PDT) has become a new treatment modality, appearing in recent experimental studies and clinical trials in various tumors. This study explores the combined effect of gene transfection with PDT on GC cells using aloe emodin (AE)-encapsulated nanoliposomes, which acted as gene carrier as well as one photosensitizer (PS). AE-encapsulated nanoliposomes (nano-AE) were prepared by reverse evaporation method. Electron microscopy and nano-ZS90 analyzer were used to detect its morphology, size, and wavelength. Western blot was used to detect the expression of the caspase-3 after transfection. MTT assay and flow cytometry were employed to determine the cytotoxic and apoptotic rates, respectively. Hoechst 33342 staining was adopted to detect the morphological changes in death gastric cancer cells. Cellular reactive oxygen species (ROS) contents were measured by DCFH-DA staining. Outcomes demonstrated that the nano-AE has good properties as gene delivery carriers as well as a PS. The group in which the recombinant plasmid of r-caspase-3 was transfected had higher protein expression of the caspase-3 than controls, meanwhile the proliferation rates of the transfected cells were inhibited by the nano-AE-mediated PDT in an energy-dependent manner. In addition, in the transfected cells, the death rate increased to 77.3% as assessed 12 h after PDT (6.4 J/cm(2) ). Hochest 33342 staining also revealed that the death rate increased significantly in the transfected group compared with other groups. Compared to control groups, the production of ROS in nano-AE PDT group had quadrupled in SGC-7901 cells as early as 1 h after PDT, while it is similar to the group of nano-AE transfection and PDT. Nano-AE-mediated r-caspase-3 gene transfection coupled with PDT could inhibit the proliferation rate and increase the apoptotic rate remarkably in human gastric cancer cells.
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Affiliation(s)
- Kai-Ting Li
- Department of Rehabilitation, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qin-Qin Duan
- Department of gastroenterology, Chinese Medicine Hospital of Longquan, Chengdu, China
| | - Qing Chen
- Department of Rehabilitation, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Juan-Wen He
- Department of Rehabilitation, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Si Tian
- Department of Rehabilitation, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hai-Dan Lin
- Department of Rehabilitation, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qing Gao
- Department of gastroenterology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ding-Qun Bai
- Department of Rehabilitation, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Broekgaarden M, Weijer R, van Gulik TM, Hamblin MR, Heger M. Tumor cell survival pathways activated by photodynamic therapy: a molecular basis for pharmacological inhibition strategies. Cancer Metastasis Rev 2015; 34:643-90. [PMID: 26516076 PMCID: PMC4661210 DOI: 10.1007/s10555-015-9588-7] [Citation(s) in RCA: 158] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Photodynamic therapy (PDT) has emerged as a promising alternative to conventional cancer therapies such as surgery, chemotherapy, and radiotherapy. PDT comprises the administration of a photosensitizer, its accumulation in tumor tissue, and subsequent irradiation of the photosensitizer-loaded tumor, leading to the localized photoproduction of reactive oxygen species (ROS). The resulting oxidative damage ultimately culminates in tumor cell death, vascular shutdown, induction of an antitumor immune response, and the consequent destruction of the tumor. However, the ROS produced by PDT also triggers a stress response that, as part of a cell survival mechanism, helps cancer cells to cope with the PDT-induced oxidative stress and cell damage. These survival pathways are mediated by the transcription factors activator protein 1 (AP-1), nuclear factor E2-related factor 2 (NRF2), hypoxia-inducible factor 1 (HIF-1), nuclear factor κB (NF-κB), and those that mediate the proteotoxic stress response. The survival pathways are believed to render some types of cancer recalcitrant to PDT and alter the tumor microenvironment in favor of tumor survival. In this review, the molecular mechanisms are elucidated that occur post-PDT to mediate cancer cell survival, on the basis of which pharmacological interventions are proposed. Specifically, pharmaceutical inhibitors of the molecular regulators of each survival pathway are addressed. The ultimate aim is to facilitate the development of adjuvant intervention strategies to improve PDT efficacy in recalcitrant solid tumors.
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Affiliation(s)
- Mans Broekgaarden
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Ruud Weijer
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Thomas M van Gulik
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, USA
- Department of Dermatology, Harvard Medical School, Boston, MA, USA
- Harvard-MIT Division of Health Sciences & Technology, Cambridge, MA, USA
| | - Michal Heger
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
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Subramanian CR, Triadafilopoulos G. Endoscopic treatments for dysplastic Barrett's esophagus: resection, ablation, what else? World J Surg 2015; 39:597-605. [PMID: 24841804 DOI: 10.1007/s00268-014-2636-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Endoscopic eradication therapy for dysplastic Barrett's esophagus (BE) comprises resection and mucosal ablation techniques. Over the years, these techniques have been tried with success, not only for dysplastic Barrett's epithelium but also for non-dysplastic Barrett's epithelium and early adenocarcinoma. Endoscopic resection is usually carried out for visible lesions, either as endoscopic mucosal resection (EMR), which is practiced widely in Western countries, or as endoscopic submucosal dissection, which is more popular in Japan and throughout Asia. Among ablative techniques are photodynamic therapy, cryotherapy, and radiofrequency ablation (RFA). METHODS We reviewed the published evidence pertaining to endoscopic treatments of dysplastic BE, with emphasis on the various resection and ablative techniques, their safety, efficacy, durability of effect, and tolerability. RESULTS Both resection and ablation procedures performed endoscopically have been proved effective, and safe for treating dysplastic BE and early adenocarcinoma. Among the ablative techniques, RFA has shown to be more effective and safe, and is preferred for most cases. CONCLUSIONS Endoscopic therapies have revolutionized the treatment of BE and have minimized the need for surgical intervention in many patients. Concomitant treatment of acid reflux with proton pump inhibitors and continuous surveillance are essential. Combination techniques such as EMR followed by RFA may be also considered in some cases.
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Maruyama T, Akutsu Y, Suganami A, Tamura Y, Fujito H, Ouchi T, Akanuma N, Isozaki Y, Takeshita N, Hoshino I, Uesato M, Toyota T, Hayashi H, Matsubara H. Treatment of near-infrared photodynamic therapy using a liposomally formulated indocyanine green derivative for squamous cell carcinoma. PLoS One 2015; 10:e0122849. [PMID: 25850029 PMCID: PMC4388603 DOI: 10.1371/journal.pone.0122849] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Accepted: 02/20/2015] [Indexed: 12/04/2022] Open
Abstract
Introduction Photodynamic therapy (PDT) is a less invasive option for cancer treatment that has evolved through recent developments in nanotechnology. We have designed and synthesized a novel liposome system that includes an indocyanine green (ICG) derivative, ICG-C18, in its bilayer. In addition to its use as an optical imager to visualize blood, lymphatic, and bile flow, ICG has also been used as an optical sensitizer. In the present report, we evaluate the use of our novel liposome system, LP-ICG-C18, in PDT for squamous cell carcinoma in an autologous murine model. Materials and Methods An excitation pulse beam (300 μJ/pulse) of a single band (800 nm) was used for sensitization. The cytotoxicity of the photodynamic therapy was evaluated in terms of cellular morphology changes, methyl thiazolyl tetrazolium (MTT) assay results, and terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate-biotin nick end labeling (TUNEL) staining. We tested the enhanced permeability and retention effect of LP-ICG-C18 in tumor-bearing C3H/He mice using a near-infrared fluorescence imaging system and fluorescence microscopy. We also examined the antitumor effect of PDT by measuring tumor volume in tumor-bearing mice. Results Cell death and apoptosis were only observed in the PDT group receiving LP-ICG-C18. LP-ICG-C18 itself had no cytotoxic activity and showed good biocompatibility. LP-ICG-C18 accumulated on the tumor 24 hours after injection and was retained for approximately 3 weeks. Tumor cell apoptosis following PDT with LP-ICG-C18 was also observed under optical microscopy, MTT assay, and TUNEL staining. Conclusion These findings suggest that LP-ICG-C18 may be an effective intervening material in PDT for malignant disease.
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Affiliation(s)
- Tetsuro Maruyama
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yasunori Akutsu
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
- * E-mail:
| | - Akiko Suganami
- Department of Bioinformatics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yutaka Tamura
- Department of Bioinformatics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hiromichi Fujito
- Department of Medical System Engineering, Faculty of Engineering, Chiba University, Chiba, Japan
| | - Tomoki Ouchi
- Division of Nanoscience, Graduate School of Advanced Integration Science, Chiba University, Chiba, Japan
| | - Naoki Akanuma
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yuka Isozaki
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Nobuyoshi Takeshita
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Isamu Hoshino
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masaya Uesato
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Taro Toyota
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Hideki Hayashi
- Center for Frontier Medical Engineering, Chiba University, Chiba, Japan
| | - Hisahiro Matsubara
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
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Clinical outcome of photodynamic therapy in esophageal squamous cell carcinoma. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 141:20-5. [DOI: 10.1016/j.jphotobiol.2014.09.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 08/25/2014] [Accepted: 09/02/2014] [Indexed: 01/30/2023]
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Kozarek RA. WITHDRAWN: Photodynamic therapy in esophageal cancer. GASTROINTESTINAL INTERVENTION 2014. [DOI: 10.1016/j.gii.2014.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ablative therapy for esophageal dysplasia and early malignancy: focus on RFA. BIOMED RESEARCH INTERNATIONAL 2014; 2014:642063. [PMID: 25140320 PMCID: PMC4129136 DOI: 10.1155/2014/642063] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 07/07/2014] [Indexed: 02/07/2023]
Abstract
Ablative therapies have been utilized with increasing frequency for the treatment of Barrett's esophagus with and without dysplasia. Multiple modalities are available for topical ablation of the esophagus, but radiofrequency ablation (RFA) remains the most commonly used. There have been significant advances in technique since the introduction of RFA. The aim of this paper is to review the indications, techniques, outcomes, and most common complications following esophageal ablation with RFA.
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