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Liu J, Yan G, Chen Q, Zeng Q, Wang X. Modified 5-aminolevulinic acid photodynamic therapy (M-PDT) inhibits cutaneous squamous cell carcinoma cell proliferation via targeting PP2A/PP5-mediated MAPK signaling pathway. Int J Biochem Cell Biol 2021; 137:106036. [PMID: 34217813 DOI: 10.1016/j.biocel.2021.106036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/15/2021] [Accepted: 06/29/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND We previously demonstrated that M-PDT is painless and effective in precancerous skin diseases treatment. However, whether M-PDT is effective in cSCC and the underlying inhibitory mechanism remains enigmatic. OBJECTIVE We aims to unveil the effect of M-PDT on cSCC cell proliferation and the regulatory effect of M-PDT on MAPK signaling. METHODS The proliferation and migration of cSCC cells were revealed by CCK8 assay, tumor sphere formation assay and scratch assay respectively. The expression of MAPKs was examined by western blot. The activity of PP2A and PP5 was regulated by inhibitor and recombinant adenoviruses. RESULTS Here, we show that M-PDT inhibits cSCC cell proliferation by activating p-JNK, p-p38 and inhibiting p-Erk1/2, as well as activation of PP2A and inactivation of PP5. Furthermore, pharmacological inhibition of PP2A conferred resistance to M-PDT's suppression on p-Erk1/2 and attenuated inhibitory effects of M-PDT on cell proliferation whereas overexpression of wild-type PP2A showed the contrary results. Pharmacological inhibition of PP5 potentiated M-PDT's elevation on p-JNK and strengthened inhibitory effects of M-PDT on cell proliferation whereas overexpression of wild-type PP5 exhibited the contrary results. CONCLUSION Our findings indicate that M-PDT inhibits cSCC cell proliferation via targeting PP2A/PP5-mediated MAPK signaling pathway.
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Affiliation(s)
- Jia Liu
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Guorong Yan
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Qi Chen
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Qingyu Zeng
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China.
| | - Xiuli Wang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China.
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Liu C, Wang Z, Hu X, Ito H, Takahashi K, Nakajima M, Tanaka T, Zhu P, Li XK. 5-aminolevulinic acid combined with sodium ferrous citrate ameliorated lupus nephritis in a mouse chronic graft-versus-host disease model. Int Immunopharmacol 2021; 96:107626. [PMID: 33862551 DOI: 10.1016/j.intimp.2021.107626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/11/2021] [Accepted: 03/28/2021] [Indexed: 12/24/2022]
Abstract
Systemic lupus erythematosus (SLE) is a systemic autoimmune disease characterized by the abnormal activation of immune cells and hypersecretion of autoantibodies and causes irreversible chronic damage, such as lupus nephritis. Chronic graft-versus-host-disease (cGvHD) in mice induced by the injection of parental mouse lymphocytes into F1 hybrids leads to a disease similar to SLE. 5-aminolevulinic acid (5-ALA) is a key progenitor of heme, and its combination with sodium ferrous citrate (SFC) can up-regulate the heme oxygenase (HO-1) expression, resulting in an anti-inflammatory effect. While HO-1 had been reported to be involved in T cell activation and can limit immune-based tissue damage through Treg suppression, which promotes effector response. Thus, we hypothesized that treatment with 5-ALA/SFC could ameliorate lupus nephritis in a mouse cGvHD model. Our results showed that 5-ALA/SFC-treatment significantly decreased the anti-double-stranded DNA (ds-DNA) autoantibodies, blood urea nitrogen (BUN) and creatinine (Cre) levels, reduced kidney inflammatory dendritic cells (DCs) and B cell activation, and increased the regulatory T cells (Tregs) at nine weeks. Furthermore, 5-ALA/SFC suppressed mRNA expression of TNF-α, IL-1β, IFN-γ and markers on DCs. In addition, we also found that 5-ALA/SFC treatment increased the HO-1 expression on donor-derived DCs and Tregs concurrently, increased the number of Tregs, and reduced the population of activated DCs, B cells and CD8+ T cells at three weeks (early stage of the disease). We thus identified a novel role of 5-ALA/SFC for therapeutically improving the symptoms of lupus nephritis in a mouse cGvHD model and expanded the current understanding of how this immunoregulatory agent can be used to generate beneficial immune responses and treat autoimmune disease.
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Affiliation(s)
- Chi Liu
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Zhidan Wang
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Xin Hu
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | | | | | | | | | - Ping Zhu
- Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xiao-Kang Li
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan; Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
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3
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Dadario NB, Khatri D, Reichman N, Nwagwu CD, D'Amico RS. 5-Aminolevulinic Acid-Shedding Light on Where to Focus. World Neurosurg 2021; 150:9-16. [PMID: 33684574 DOI: 10.1016/j.wneu.2021.02.118] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 02/24/2021] [Accepted: 02/26/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND Surgical management of gliomas is predicated on "safe maximal resection" across all histopathologic grades because progression-free survival and overall survival are positively affected by the increasing extent of resection. Administration of the prodrug 5-aminolevulinic acid (5-ALA) induces tumor fluorescence with high specificity and sensitivity for malignant high-grade glioma (HGG). Fluorescence-guided surgery (FGS) using 5-ALA improves the extent of resection in the contrast-enhancing and nonenhancing tumor components in HGG. It has also shown preliminary usefulness in other central nervous system tumors, but with certain limitations. METHODS We review and discuss the state of 5-ALA FGS for central nervous system tumors and identify the limitations in its use as a guide for future clinical optimization. RESULTS 5-ALA FGS provides maximum clinical benefits in the treatment of newly diagnosed glioblastoma. 5-ALA fluorescence specificity is limited in low-grade glioma, recurrent HGG, and non-glial tumors. Several promising intraoperative adjuncts to 5-ALA FGS have been developed to expand its indications and improve the clinical efficacy and usefulness of 5-ALA FGS. CONCLUSIONS 5-ALA FGS improves the clinical outcomes in HGG. However, further optimization of the diagnostic performance and clinical use of 5-ALA FGS is necessary for low-grade glioma and recurrent HGG tumors. Neurosurgical oncology will benefit from the novel use of advanced technologies and intraoperative visualization techniques outlined in this review, such as machine learning, hand-held fibe-optic probes, augmented reality, and three-dimensional exoscope assistance, to optimize the clinical usefulness and operative outcomes of 5-ALA FGS.
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Affiliation(s)
- Nicholas B Dadario
- Department of Neurological Surgery, Lenox Hill Hospital/Northwell Health, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, New York, New York, USA; Rutgers Robert Wood Johnson School of Medicine, Rutgers University, New Brunswick, New Jersey, USA
| | - Deepak Khatri
- Department of Neurological Surgery, Lenox Hill Hospital/Northwell Health, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, New York, New York, USA
| | - Noah Reichman
- Department of Neurological Surgery, Lenox Hill Hospital/Northwell Health, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, New York, New York, USA
| | - Chibueze D Nwagwu
- Department of Neurological Surgery, Lenox Hill Hospital/Northwell Health, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, New York, New York, USA
| | - Randy S D'Amico
- Department of Neurological Surgery, Lenox Hill Hospital/Northwell Health, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, New York, New York, USA.
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4
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Sakurai Y, Ngwe Tun MM, Kurosaki Y, Sakura T, Inaoka DK, Fujine K, Kita K, Morita K, Yasuda J. 5-amino levulinic acid inhibits SARS-CoV-2 infection in vitro. Biochem Biophys Res Commun 2021; 545:203-207. [PMID: 33571909 PMCID: PMC7846235 DOI: 10.1016/j.bbrc.2021.01.091] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 01/25/2021] [Indexed: 12/18/2022]
Abstract
The current COVID-19 pandemic requires urgent development of effective therapeutics. 5-amino levulinic acid (5-ALA) is a naturally synthesized amino acid and has been used for multiple purposes including as an anticancer therapy and as a dietary supplement due to its high bioavailability. In this study, we demonstrated that 5-ALA treatment potently inhibited infection of SARS-CoV-2, a causative agent of COVID-19, in cell culture. The antiviral effects could be detected in both human and non-human cells, without significant cytotoxicity. Therefore, 5-ALA is worth to be further investigated as an antiviral drug candidate for COVID-19.
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Affiliation(s)
- Yasuteru Sakurai
- Department of Emerging Infectious Diseases, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, 852-8523, Japan; National Research Center for the Control and Prevention of Infectious Diseases, Nagasaki University, Nagasaki, 852-8521, Japan.
| | - Mya Myat Ngwe Tun
- Department of Virology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, 852-8523, Japan
| | - Yohei Kurosaki
- Department of Emerging Infectious Diseases, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, 852-8523, Japan; National Research Center for the Control and Prevention of Infectious Diseases, Nagasaki University, Nagasaki, 852-8521, Japan
| | - Takaya Sakura
- Department of Molecular Infection Dynamics, Shionogi Global Infectious Diseases Division, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, 852-8523, Japan
| | - Daniel Ken Inaoka
- Department of Molecular Infection Dynamics, Shionogi Global Infectious Diseases Division, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, 852-8523, Japan; School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, 852-8523, Japan
| | - Kiyotaka Fujine
- Pharmaceutical Research Department, Global Pharmaceutical R&D Division, Neopharma Japan Co., Ltd, Tokyo, 102-0071, Japan
| | - Kiyoshi Kita
- School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, 852-8523, Japan; Department of Host - Defense Biochemistry, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, 852-8523, Japan.
| | - Kouichi Morita
- Department of Virology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, 852-8523, Japan.
| | - Jiro Yasuda
- Department of Emerging Infectious Diseases, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, 852-8523, Japan; National Research Center for the Control and Prevention of Infectious Diseases, Nagasaki University, Nagasaki, 852-8521, Japan.
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Wang Z, Ma K, Liu C, Hu X, Que W, Ito H, Takahashi K, Nakajima M, Tanaka T, Ren K, Guo WZ, Yi SQ, Li XK. 5-Aminolevulinic acid combined with sodium ferrous citrate (5-ALA/SFC) ameliorated liver injury in a murine acute graft-versus-host disease model by reducing inflammation responses through PGC1-α activation. Drug Discov Ther 2021; 14:304-312. [PMID: 33390570 DOI: 10.5582/ddt.2020.03112] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Acute graft-versus-host disease (aGvHD) remains lethal as a life-threatening complication after allogeneic hematopoietic stem cell transplantation (HSCT). Inflammatory responses play an important role in aGvHD. 5-Aminolevulinic acid combined with sodium ferrous citrate (5-ALA/SFC) has been widely reported to have a major effect on the anti-inflammatory response; however, these effects in aGvHD models have never been reported. In this study, a murine aGvHD model was developed by transferring spleen cells from donor B6/N (H-2kb) mice into recipient B6D2F1 (H-2kb/d) mice. In addition to evaluating manifestations in aGvHD mice, we analyzed the serum ALT/AST levels, liver pathological changes, infiltrating cells and mRNA expression of inflammation-related cytokines and chemokines. 5-ALA/SFC treatment significantly ameliorated liver injury due to aGvHD and decreased the population of liver-infiltrating T cells, resulting in a reduced expression of pro-inflammatory cytokines and chemokines. Furthermore, the mRNA expression proliferator-activated receptor-γcoactivator (PGC-1α) was enhanced, which might explain why 5-ALA/SFC treatment downregulates inflammatory signaling pathways. Our results indicated that 5-ALA/SFC can ameliorate liver injury induced by aGvHD through the activation of PGC-1α and modulation of the liver mRNA expression of inflammatory-related cytokines and chemokines. This may be a novel strategy for treating this disease.
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Affiliation(s)
- Zhidan Wang
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
- Laboratory of Functional Morphology Graduate School of Human Health Sciences Tokyo Metropolitan University, Tokyo, Japan
| | - Kuai Ma
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Chi Liu
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Xin Hu
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Weitao Que
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | | | | | | | | | - Ke Ren
- Project Division for Healthcare Innovation, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
| | - Wen-Zhi Guo
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Shuang-Qin Yi
- Laboratory of Functional Morphology Graduate School of Human Health Sciences Tokyo Metropolitan University, Tokyo, Japan
| | - Xiao-Kang Li
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
- Project Division for Healthcare Innovation, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Fujiwara H, Takahara N, Tateishi K, Tanaka M, Kanai S, Kato H, Nakatsuka T, Yamamoto K, Kogure H, Arita J, Nakai Y, Kasuga M, Ushiku T, Hasegawa K, Koike K. 5-Aminolevulinic acid-mediated photodynamic activity in patient-derived cholangiocarcinoma organoids. Surg Oncol 2020; 35:484-490. [PMID: 33126085 DOI: 10.1016/j.suronc.2020.10.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/21/2020] [Accepted: 10/19/2020] [Indexed: 01/03/2023]
Abstract
BACKGROUND Accurate diagnosis of the disease extension of cholangiocarcinoma (CCA) is often difficult in clinical practice. The diagnostic yield of conventional pre-operative imaging or endoscopic procedures is sometimes insufficient for the evaluation of longitudinal spreading of CCA. Here we investigated the usefulness of 5-aminolevulinic acid (5-ALA) for the pre- or intra-operative diagnosis of CCA, using patient-derived organoids. METHODS Four CCA- and two adjacent tissue-derived organoids were established. After 5-ALA treatment, we assessed their photodynamic activity using fluorescence microscopy. RESULTS CCA organoids established from different patients showed diverse morphology in contrast to monolayer structures of non-tumor organoids, and had the ability to form subcutaneous tumors in immunodeficient mice. CCA organoids demonstrated remarkably high photodynamic activity based on higher accumulation of protoporphyrin IX as a metabolite of 5-ALA compared to non-tumor organoids (40-71% vs. < 4%, respectively). Importantly, cancer cell-specific high photodynamic activity distinguished the organoids originated from biliary stenotic lesions from those of non-stenotic lesions in a CCA patient. The high photodynamic activity did not depend on the expression profile of heme biosynthesis genes. CONCLUSIONS Distinct 5-ALA-based photodynamic activity could have diagnostic potential for the discrimination of CCA from non-tumor tissues.
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Affiliation(s)
- Hiroaki Fujiwara
- Division of Gastroenterology, The Institute for Adult Diseases, Asahi Life Foundation, 2-2-6 Bakurocho, Chuo-ku, Tokyo, 103-0002, Japan; Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
| | - Naminatsu Takahara
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Keisuke Tateishi
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Mariko Tanaka
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Sachiko Kanai
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Hiroyuki Kato
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Takuma Nakatsuka
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Keisuke Yamamoto
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Hirofumi Kogure
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Junichi Arita
- Hepato-Biliary-Pancreatic Division, Department of Surgery, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Yousuke Nakai
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Masato Kasuga
- Division of Research, The Institute for Adult Diseases, Asahi Life Foundation, 2-2-6 Bakurocho, Chuo-ku, Tokyo, 103-0002, Japan
| | - Tetsuo Ushiku
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Kiyoshi Hasegawa
- Hepato-Biliary-Pancreatic Division, Department of Surgery, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Kazuhiko Koike
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
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7
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Wang Y, Zu M, Ma X, Jia D, Lu Y, Zhang T, Xue P, Kang Y, Xu Z. Glutathione-Responsive Multifunctional "Trojan Horse" Nanogel as a Nanotheranostic for Combined Chemotherapy and Photodynamic Anticancer Therapy. ACS Appl Mater Interfaces 2020; 12:50896-50908. [PMID: 33107728 DOI: 10.1021/acsami.0c15781] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
It remains a great challenge to design a multifunctional and robust nanoplatform for stimuli-responsive drug delivery toward a lesion, which tactfully integrates multiple molecules with therapeutic and diagnostic characteristics. Herein, we reported a facile and ingenious cross-linked nanogel (DSA) based on the chemical cross-link of drugs as a straightforward strategy to overcome the instability of the assembly. In DSA, doxorubicin (DOX) and 5-aminolevulinic acid (ALA) were cross-linked with a disulfide linker for realizing synergistic anticancer therapy. The stability of DSA was adjusted via balancing the hydrophobic/hydrophilic property with hydrophilic NH2-PEG1k. After regulating the coordination of the DOX part and ALA moiety, the drug-loaded nanogel exhibited superior chemotherapeutic efficacies. Additionally, the DSA could selectively biosynthesize fluorescent protoporphyrin IX (PpIX) in tumor cells, which could be applied for a real-time imaging probe of accurate cancer diagnosis. Besides, the in situ synthesized PpIX in mitochondria could serve as a photosensitizer to convert oxygen into toxic reactive oxygen species under a near infrared ray at 660 nm irradiation, leading to an excellent tumor-killing efficacy. This work proposed a unique strategy for designing a series of prodrug nanogels as a universal drug delivery platform for realizing precise disease therapy and diagnostics.
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MESH Headings
- Animals
- Antibiotics, Antineoplastic/chemistry
- Antibiotics, Antineoplastic/pharmacology
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Cell Survival/drug effects
- Doxorubicin/chemistry
- Doxorubicin/pharmacology
- Drug Screening Assays, Antitumor
- Female
- Glutathione/analysis
- Glutathione/metabolism
- Hydrophobic and Hydrophilic Interactions
- Levulinic Acids/chemistry
- Levulinic Acids/pharmacology
- Mammary Neoplasms, Experimental/drug therapy
- Mammary Neoplasms, Experimental/metabolism
- Mammary Neoplasms, Experimental/pathology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred Strains
- Molecular Structure
- Nanogels/chemistry
- Particle Size
- Photochemotherapy
- Rats
- Rats, Sprague-Dawley
- Surface Properties
- Theranostic Nanomedicine
- Aminolevulinic Acid
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Affiliation(s)
- Yajun Wang
- School of Materials and Energy & Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Southwest University, Chongqing 400715, P. R. China
| | - Menghang Zu
- School of Materials and Energy & Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Southwest University, Chongqing 400715, P. R. China
| | - Xianbin Ma
- School of Materials and Energy & Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Southwest University, Chongqing 400715, P. R. China
| | - Die Jia
- School of Materials and Energy & Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Southwest University, Chongqing 400715, P. R. China
| | - Yi Lu
- School of Materials and Energy & Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Southwest University, Chongqing 400715, P. R. China
| | - Tian Zhang
- School of Materials and Energy & Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Southwest University, Chongqing 400715, P. R. China
| | - Peng Xue
- School of Materials and Energy & Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Southwest University, Chongqing 400715, P. R. China
| | - Yuejun Kang
- School of Materials and Energy & Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Southwest University, Chongqing 400715, P. R. China
| | - Zhigang Xu
- School of Materials and Energy & Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Southwest University, Chongqing 400715, P. R. China
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8
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Hijioka M, Kitamura K, Yanagisawa D, Nishimura K, Takata K, Inden M, Kitamura Y. Neuroprotective effects of 5-aminolevulinic acid against neurodegeneration in rat models of Parkinson's disease and stroke. J Pharmacol Sci 2020; 144:183-187. [PMID: 32807663 DOI: 10.1016/j.jphs.2020.07.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 06/28/2020] [Accepted: 07/22/2020] [Indexed: 11/21/2022] Open
Abstract
Oxidative stress is associated with the progression of the neurodegenerative diseases Parkinson's disease (PD) and cerebral ischemia. Recently, 5-aminolevulinic acid (5-ALA), an intermediate in the porphyrin synthesis pathway, was reported to exert antioxidative effects on macrophages and cardiomyocytes. Here, we demonstrated the neuroprotective effects of 5-ALA using rat models of PD and ischemia as well as in vitro in SH-SY5Y cells. 5-ALA partially prevented neurodegeneration in each condition. These results suggest that 5-ALA has a potential for promising therapeutic agent to protect against neurodegeneration exacerbated by oxidative stress.
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Affiliation(s)
- Masanori Hijioka
- Laboratory of Pharmacology and Neurobiology, College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga, 525-8577, Japan
| | - Kanori Kitamura
- Laboratory of Pharmacology and Neurobiology, College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga, 525-8577, Japan
| | - Daijiro Yanagisawa
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu, Shiga, 520-2192, Japan
| | - Kaneyasu Nishimura
- Division of Integrated Pharmaceutical Sciences, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8414, Japan
| | - Kazuyuki Takata
- Division of Integrated Pharmaceutical Sciences, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8414, Japan
| | - Masatoshi Inden
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu, Gifu, 501-1196, Japan
| | - Yoshihisa Kitamura
- Laboratory of Pharmacology and Neurobiology, College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga, 525-8577, Japan.
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9
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Wen S, Wang W, Liu R, He P. Amylase-Protected Ag Nanodots for in vivo Fluorescence Imaging and Photodynamic Therapy of Tumors. Int J Nanomedicine 2020; 15:3405-3414. [PMID: 32523340 PMCID: PMC7234966 DOI: 10.2147/ijn.s233214] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 02/21/2020] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Fluorescent metallic nanodots (NDs) have become a promising nanoprobe for a wide range of biomedical applications. Because Ag NDs have a high tendency to be oxidized, their synthesis and storage are a big challenge. Thus, the method for preparing stable Ag NDs is urgently needed. Surface modification and functionalization can enrich the capability of Ag NDs. METHODS In this work, fluorescent Ag NDs were synthesized in deoxygenated water by using porcine pancreatic α-amylase (PPA) as the stabilizing/capping agent. The absorption and fluorescence of PPA-protected Ag NDs (PPA@AgNDs) were measured with a spectrophotometer and a spectrofluorometer, respectively. The morphology of PPA@AgNDs was characterized by high-angle annular dark-field (HAADF) scanning transmission electron microscopy (STEM). The biocompatibility of PPA@AgNDs was evaluated by tetrazolium (MTT)-based assay. PolyLys-Cys-SH (sequence: KKKKKKC) peptides were conjugated to PPA@AgNDs via heterobifunctional crosslinkers. PolyLys-Cys-linked PPA@AgNDs absorbed 5-aminolevulinic acid (ALA) by electrostatic interaction at physiological pH. The capability of tumor targeting was evaluated by intravenously injecting PPA@AgND-ALA into 4T1 breast cancer xenograft mouse models. Photodynamic therapy (PDT) against tumors was performed under 635 nm laser irradiation. RESULTS PPA@AgNDs emitted at 640 nm with quantum yield of 2.1%. The Ag NDs exhibited strong photostability over a long period and a fluorescence lifetime of 5.1 ns. PPA@AgNDs easily entered the cells to stain the nuclei, showing the capabilities of living cell imaging with negligible cytotoxicity. ALA-loaded PPA@AgNDs (PPA@AgND-ALA) presented the superiority of passive tumor targeting via the enhanced permeability and retention (EPR) effect. Tumors were visualized in the near-infrared (NIR) region with reduced background noise. ALA molecules released from PPA@AgND-ALA was converted into the photosensitizer (PS) of protoporphyrin IX (PpIX) intracellularly and intratumorally, which greatly improved the PDT efficacy. CONCLUSION Our approach opens a new way to design a novel theranostic nanoplatform of PPA@AgND-ALA for effective tumor targeting and fluorescence image-guided PDT.
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Affiliation(s)
- Shuguang Wen
- Department of Hematology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an710061, People’s Republic of China
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou450052, People’s Republic of China
- Basic Medical College, Henan University, Kaifeng475000, People’s Republic of China
| | - Weili Wang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou215123, People’s Republic of China
| | - Ruimin Liu
- Basic Medical College, Henan University, Kaifeng475000, People’s Republic of China
| | - Pengcheng He
- Department of Hematology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an710061, People’s Republic of China
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10
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Chi YF, Qin JJ, Li Z, Ge Q, Zeng WH. Enhanced anti-tumor efficacy of 5-aminolevulinic acid-gold nanoparticles-mediated photodynamic therapy in cutaneous squamous cell carcinoma cells. Braz J Med Biol Res 2020; 53:e8457. [PMID: 32348428 PMCID: PMC7205413 DOI: 10.1590/1414-431x20208457] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 02/05/2020] [Indexed: 01/29/2023] Open
Abstract
The objective of this study was to investigate whether the conjugation of gold nanoparticles (GNPs) to 5-aminolevulinic acid (5-ALA) could enhance the anti-tumor efficiency of photodynamic therapy (PDT) in epidermoid carcinoma cells. The mRNA and protein expression levels were determined by quantitative real-time PCR and western blot, respectively. Cell viability, apoptosis, invasion, and migration were determined by MTT assay, flow cytometry, transwell invasion assay, and migration assay, respectively. Singlet oxygen generation was detected by the singlet oxygen sensor green reagent assay. Our results showed that PDT with 5-ALA and GNPs-conjugated 5-ALA (5-ALA-GNPs) significantly suppressed cell viability, increased cell apoptosis and singlet oxygen generation in both HaCat and A431 cells, and PDT with 5-ALA and 5-ALA-GNPs had more profound effects in A431 cells than that in HaCat cells. More importantly, 5-ALA-GNPs treatment potentiated the effects of PDT on cell viability, cell apoptosis, and singlet oxygen generation in A431 cells compared to 5-ALA treatment. Further in vitro assays showed that PDT with 5-ALA-GNPs significantly decreased expression of STAT3 and Bcl-2 and increased expression of Bax in A431 cells compared with PDT with 5-ALA. In addition, 5-ALA-GNPs treatment enhanced the inhibitory effects of PDT on cell invasion and migration and Wnt/β-catenin signaling activities in A431 cells compared to 5-ALA treatment. In conclusion, our results suggested that GNPs conjugated to 5-ALA significantly enhanced the anti-tumor efficacy of PDT in A431 cells, which may represent a better strategy to improve the outcomes of patients with cutaneous squamous cell carcinoma.
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Affiliation(s)
- Yu-fei Chi
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi’an, China
| | - Jing-jing Qin
- Department of Dermatology, Forest Industry Worker Hospital of Shaanxi Province, Xi'an, China
| | - Zhi Li
- Department of Dermatology, Qingdao Municipal Hospital, Qingdao, China
| | - Qin Ge
- Department of Dermatology, Jingmen No.1 People's Hospital, Jingmen, China
| | - Wei-hui Zeng
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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11
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Wang X, Tian Y, Liao X, Tang Y, Ni Q, Sun J, Zhao Y, Zhang J, Teng Z, Lu G. Enhancing selective photosensitizer accumulation and oxygen supply for high-efficacy photodynamic therapy toward glioma by 5-aminolevulinic acid loaded nanoplatform. J Colloid Interface Sci 2020; 565:483-493. [PMID: 31982715 DOI: 10.1016/j.jcis.2020.01.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 12/23/2019] [Accepted: 01/06/2020] [Indexed: 12/12/2022]
Abstract
The complex biology of glioma compromises therapeutic efficacy and results in poor prognosis. Photodynamic therapy (PDT) has emerged as a promising modality for localized tumor ablation with limited damage to healthy brain tissues. However, low photosensitizer concentration and hypoxic microenvironment in glioma tissue hamper the practical applications of PDT. To address the challenges, biocompatible periodic mesoporous organosilica coated Prussian blue nanoparticles (PB@PMOs) are constructed to load a biosafe prodrug 5-aminolevulinic acid (5-ALA), which is pronouncedly converted to protoporphyrin IX (PpIX) in malignant cells. PB@PMO-5-ALA induces a higher accumulation of PpIX in glioma cells compared to free 5-ALA. Meanwhile, the PB@PMOs, with a mean edge length of 81 nm and good biocompatibility, effectively decompose hydrogen peroxide to oxygen in a temperature-responsive manner. Oxygen supply further contributes to the promotion of 5-ALA-PDT. Thus, the photodynamic effect of PB@PMO-5-ALA is significantly improved, imposing augmented cytotoxicity to glioma U87MG cells. Furthermore, ex vivo fluorescence imaging elucidates the tumor PpIX increases by 75% in PB@PMO-5-ALA treated mice than that in 5-ALA treated ones post 12 h injection. Magnetic resonance imaging (MRI) and iron staining strongly demonstrate the accumulation of PB@PMO-5-ALA in glioma tissues with negative contrast enhancement and blue staining deposits, respectively. The nanoparticle accumulation and high PpIX level collaboratively enhance PDT efficacy through PB@PMO-5-ALA, which efficiently suppresses tumor growth, providing a promising option with safety for local glioma ablation.
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Affiliation(s)
- Xiaofen Wang
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, PR China
| | - Ying Tian
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, PR China
| | - Xiang Liao
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, PR China
| | - Yuxia Tang
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, PR China
| | - Qianqian Ni
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, PR China
| | - Jing Sun
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, PR China
| | - Ying Zhao
- Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, Jiangsu, PR China
| | - Junjie Zhang
- Key Laboratory for Organic Electronics and Information Displays, Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Centre for Advanced Materials, Nanjing University of Posts & Telecommunications, Nanjing 210023, Jiangsu, PR China
| | - Zhaogang Teng
- Key Laboratory for Organic Electronics and Information Displays, Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Centre for Advanced Materials, Nanjing University of Posts & Telecommunications, Nanjing 210023, Jiangsu, PR China; State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University School of Chemistry and Chemical Engineering, Nanjing 210093, Jiangsu, PR China.
| | - Guangming Lu
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, PR China.
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12
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Greco G, Di Piazza S, Chan J, Zotti M, Hanna R, Gheno E, Zekiy AO, Pasquale C, De Angelis N, Amaroli A. Newly formulated 5% 5-aminolevulinic acid photodynamic therapy on Candida albicans. Photodiagnosis Photodyn Ther 2020; 29:101575. [PMID: 31614222 DOI: 10.1016/j.pdpdt.2019.10.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 09/16/2019] [Accepted: 10/07/2019] [Indexed: 01/10/2023]
Abstract
BACKGROUND A large number of systemic diseases can be linked to oral candida pathogenicity. The global trend of invasive candidiasis has increased progressively and is often accentuated by increasing Candida albicans resistance to the most common antifungal medications. Photodynamic therapy (PDT) is a promising therapeutic approach for oral microbial infections. A new formulation of 5-aminolevulinic acid (5%ALA) in a thermosetting gel (t) (5%ALA-PTt) was patented and recently has become available on the market. However, its antimicrobial properties, whether mediated or not by PDT, are not yet known. In this work we characterised them. METHODS We isolated a strain of C. albicans from plaques on the oral mucus membrane of an infected patient. Colonies of this strain were exposed for 1 24 h, to 5%ALA-PTt, 5%ALA-PTt buffered to pH 6.5 (the pH of the oral mucosa) (5%ALA-PTtb) or not exposed (control). The 1 h-exposed samples were also irradiated at a wavelength of 630 nm with 0.14 watts (W) and 0.37 W/cm2 for 7 min at a distance of <1 mm. RESULTS AND CONCLUSION The 5% ALA-PTt preparation was shown to be effective in reducing the growth of biofilm and inoculum of C. albicans. This effect seems to be linked to the intrinsic characteristics of 5%ALA-TPt, such acidic pH and the induction of free radical production. This outcome was significantly enhanced by the effect of PDT at relatively short incubation and irradiation times, which resulted in growth inhibition of both treated biofilm and inoculum by ∼80% and ∼95%, respectively.
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Affiliation(s)
- Giuseppe Greco
- Laboratory of Mycology, Department of Earth, Environmental and Life Sciences, University of Genoa, Genoa, Italy.
| | - Simone Di Piazza
- Laboratory of Mycology, Department of Earth, Environmental and Life Sciences, University of Genoa, Genoa, Italy
| | - Jiemei Chan
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences, University of Genoa, Genoa, Italy
| | - Mirca Zotti
- Laboratory of Mycology, Department of Earth, Environmental and Life Sciences, University of Genoa, Genoa, Italy
| | - Reem Hanna
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences, University of Genoa, Genoa, Italy; Department of Oral Surgery, Dental Institute, King's College Hospital NHS Foundation Trust, Denmark Hill, London, SE5 9RS, UK
| | - Ezio Gheno
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences, University of Genoa, Genoa, Italy; Dental Clinical Research Center, Dentistry School, Fluminense Federal University, Rua São Paulo, 28, Campus do Valonguinho Centro, Niterói, RJ, 24020 150, Brazil
| | - Angelina O Zekiy
- Department of Orthopedic Dentistry, Sechenov First Moscow State Medical University, Trubetzkaya St., 8, Bd. 2, 119991, Moscow, Russian Federation
| | - Claudio Pasquale
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences, University of Genoa, Genoa, Italy
| | - Nicola De Angelis
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences, University of Genoa, Genoa, Italy; Faculty of Dentistry, University of Technologi MARA, Sungai Buloh Campus, Jalan Hospital, 47000 Sungai Buloh, Selangor, Malaysia
| | - Andrea Amaroli
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences, University of Genoa, Genoa, Italy; Department of Orthopedic Dentistry, Sechenov First Moscow State Medical University, Trubetzkaya St., 8, Bd. 2, 119991, Moscow, Russian Federation.
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13
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Wang X, Jin J, Li W, Wang Q, Han Y, Liu H. Differential in vitro sensitivity of oral precancerous and squamous cell carcinoma cell lines to 5-aminolevulinic acid-mediated photodynamic therapy. Photodiagnosis Photodyn Ther 2020; 29:101554. [PMID: 31479802 DOI: 10.1016/j.pdpdt.2019.08.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 08/16/2019] [Accepted: 08/30/2019] [Indexed: 12/22/2022]
Abstract
OBJECTIVES The clinical effect of 5-aminolevulinic acid-mediated photodynamic therapy (ALA-PDT) may be correlated with the degree of dysplasia of cancer tissues, but much is still unknown regarding the differences in its effectiveness, especially in oral cancer and precancerous lesions. The aim of this study is to compare the effects of ALA-PDT on a human oral precancerous cell line (DOK) and an oral squamous cell carcinoma cell line (CAL-27). METHODS First, we explored the dose- and time-dependent responses of DOK and CAL-27 cells to ALA-PDT. DOK and CAL-27 cells were incubated with various concentrations of ALA (from 0.25 to 2 mM), followed by PDT using laser irradiation at 635 nm. The resulting photocytotoxicity was assessed in both cell lines using MTT assays. Further, apoptosis was assessed using flow cytometry, reactive oxygen species (ROS) generation was evaluated with 2,7-dichlorofluorescein diacetate (DCFH2-DA), and the response to treatment was examined via RT-qPCR and Western blotting to measure the mRNA and protein expression levels of matrix metallopeptidase 2 (MMP-2) and MMP-9. RESULTS ALA-PDT inhibited the proliferation of DOK and CAL-27 cells in a dose- and time-dependent manner. Dose-effect and inhibition-time relationships were also found. The rates of DOK and CAL-27 cell apoptosis when the ALA dose was 1 mM were 30.66 ± 3.10% and 75.40 ± 1.29%, respectively (P < 0.01). Following PDT, compared with DOK cells, the ROS level in CAL-27 cells was significantly increased and was correlated with an increase in the ALA concentration. Mechanistically, both the mRNA and protein expression levels of MMP-2 and MMP-9 were found to be regulated in both cell types after ALA-PDT. CONCLUSION ALA-PDT effectively killed DOK and CAL-27 cells in a dose- and time-dependent manner in vitro. However, under the same conditions, the susceptibilities of these cell lines to ALA-PDT were different. Further studies are necessary to confirm whether this difference is present in clinical oral cancer and precancerous lesions.
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Affiliation(s)
- Xing Wang
- Department of Oral Medicine, Peking University School and Hospital of Stomatology, Beijing 100081, PR China
| | - Jianqiu Jin
- Department of Oral Medicine, Peking University School and Hospital of Stomatology, Beijing 100081, PR China
| | - Wenwen Li
- Department of Oral Medicine, Peking University School and Hospital of Stomatology, Beijing 100081, PR China
| | - Qian Wang
- Department of Oral Medicine, Peking University School and Hospital of Stomatology, Beijing 100081, PR China
| | - Ying Han
- Department of Oral Medicine, Peking University School and Hospital of Stomatology, Beijing 100081, PR China.
| | - Hongwei Liu
- Department of Oral Medicine, Peking University School and Hospital of Stomatology, Beijing 100081, PR China.
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El-Amier Y, Elhindi K, El-Hendawy S, Al-Rashed S, Abd-ElGawad A. Antioxidant System and Biomolecules Alteration in Pisum sativum under Heavy Metal Stress and Possible Alleviation by 5-Aminolevulinic Acid. Molecules 2019; 24:E4194. [PMID: 31752309 PMCID: PMC6891517 DOI: 10.3390/molecules24224194] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 11/17/2019] [Accepted: 11/18/2019] [Indexed: 01/03/2023] Open
Abstract
Environmental pollution is the most serious problem that affects crop productivity worldwide. Pisum sativum is a leguminous plant that is cultivated on a large scale in the Nile Delta of Egypt as a winter crop, and many of the cultivated fields irrigated with drainage water that contained many pollutants including heavy metals. The present research aimed to investigate the impact of Cd and Ni on the biochemical and physiological processes in P. sativum and evaluate the potential alleviation of their toxicity by 5-aminolevulinic acid (ALA). Seedlings of P. sativum were grown in Hoagland solution treated with CdCl2 or NiCl2 for 72 h in the growth chamber. Hydrogen peroxide, lipid peroxidation, protein carbonylation, reduced glutathione, oxidized glutathione, proline, phenolics, antioxidant enzymes, as well as Cd and Ni concentrations were measured at 0, 12, 24, 36, 48, 72 h. An experiment of alleviation was conducted where ALA was added to the growth solution at a concentration of 200 µM coupled with 100 µM of either CdCl2 or NiCl2. Hydrogen peroxide, lipid peroxidation, protein carbonylation, reduced glutathione, oxidized glutathione, proline, and phenolics were induced due to the toxicity of Cd and Ni. The activities of antioxidant enzymes [NADH-oxidase (EC: 1.6.3.1), ascorbate peroxidase (EC: 1.11.1.11), glutathione reductase (EC: 1.6.4.2), superoxide dismutase (EC: 1.15.1.1), and catalase (EC: 1.11.1.6)] were induced under the treatments of both metals. On the other hand, the soluble protein decreased gradually depending upon the time of exposure to the heavy metals. The concentration of Cd and Ni in the leaves treated plants increased in time of exposure dependent manner, while their contents remained within the acceptable limits. The addition of ALA decreased the oxidative stress in treated P. sativum plants. The results revealed the significance of using ALA in the cultivation of P. sativum might improve its tolerance against heavy metal stress.
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Affiliation(s)
- Yasser El-Amier
- Department of Botany, Faculty of Science, Mansoura University, Mansoura 35516, Egypt;
| | - Khalid Elhindi
- Plant Production Department, College of Food & Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia; (K.E.); (S.E.-H.)
- Vegetable and Floriculture Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt
| | - Salah El-Hendawy
- Plant Production Department, College of Food & Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia; (K.E.); (S.E.-H.)
| | - Sarah Al-Rashed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia;
| | - Ahmed Abd-ElGawad
- Department of Botany, Faculty of Science, Mansoura University, Mansoura 35516, Egypt;
- Plant Production Department, College of Food & Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia; (K.E.); (S.E.-H.)
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Li K, Dong W, Qiu L, Liu Q, Lv G, Peng Y, Xie M, Lin J. A new GSH-responsive prodrug of 5-aminolevulinic acid for photodiagnosis and photodynamic therapy of tumors. Eur J Med Chem 2019; 181:111582. [PMID: 31398615 DOI: 10.1016/j.ejmech.2019.111582] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 07/30/2019] [Accepted: 07/31/2019] [Indexed: 10/26/2022]
Abstract
5-Aminolevulinic acid (5-ALA) and its two ester derivatives (5-ALA-OMe and 5-ALA-OHex) have been approved for photodiagnosis and photodynamic therapy (PDT) of tumors in the clinical. However, their pharmacological activities are limited by their instability under physiological conditions and lack of tumor selectivity. With the aim to overcome these shortcomings, a glutathione-responsive 5-ALA derivative (SA) was designed based on the fact that many types of tumor cells have higher intracellular glutathione level than normal cells. SA was synthesized by masking the 5-amion group of 5-ALA methyl ester (5-ALA-OMe) with a self-immolative disulfide linker. Compared with 5-ALA and 5-ALA-OMe, SA exhibited higher stability under physiological conditions, and it can efficiently release the parent compound 5-ALA-OMe in response to glutathione. In tumor cells, SA displayed excellent protoporphyrin IX (PpIX) production activity at low concentrations while 5-ALA and 5-ALA-OMe were ineffective at the same concentration. The SA-induced PpIX production was positively correlated with the intracellular glutathione level, and SA exhibited enhanced phototoxicity due to its excellent PpIX generation activity. This study indicates that modification of the amino group in 5-ALA derivatives with a self-immolative disulfide linker is an effective strategy to improve their chemical stability and pharmacological activities, and SA is a potential photosensitizer for photodiagnosis and PDT of tumors.
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Affiliation(s)
- Ke Li
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, 214063, PR China; The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, 210029, PR China
| | - Wenyi Dong
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, 214063, PR China; School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, PR China
| | - Ling Qiu
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, 214063, PR China
| | - Qingzhu Liu
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, 214063, PR China
| | - Gaochao Lv
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, 214063, PR China
| | - Ying Peng
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, 214063, PR China
| | - Minhao Xie
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, 214063, PR China; The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, 210029, PR China.
| | - Jianguo Lin
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, 214063, PR China.
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Liu C, Fujino M, Zhu S, Isaka Y, Ito H, Takahashi K, Nakajima M, Tanaka T, Zhu P, Li X. 5-ALA/SFC enhances HO-1 expression through the MAPK/Nrf2 antioxidant pathway and attenuates murine tubular epithelial cell apoptosis. FEBS Open Bio 2019; 9:1928-1938. [PMID: 31495071 PMCID: PMC6823284 DOI: 10.1002/2211-5463.12729] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/16/2019] [Accepted: 09/03/2019] [Indexed: 12/15/2022] Open
Abstract
Cyclosporin A (CsA) is a common immunosuppressant, but its use is limited as it can cause chronic kidney injury. Oxidative stress and apoptosis play a key role in CsA-induced nephrotoxicity. This study investigated the protective effect of 5-aminolevulinic acid and iron (5-ALA/SFC) on CsA-induced injury in murine proximal tubular epithelial cells (mProx24). 5-ALA/SFC significantly inhibited apoptosis in CsA-treated mProx24 cells with increases in heme oxygenase (HO)-1, nuclear factor E2-related factor 2 (Nrf2), and p38, and Erk-1/2 phosphorylation. Moreover, 5-ALA/SFC suppressed production of reactive oxygen species in CsA-exposed cells and inhibition of HO-1 suppressed the protective effects of 5-ALA/SFC. In summary, 5-ALA/SFC may have potential for development into a treatment for the anti-nephrotoxic/apoptotic effects of CsA.
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Affiliation(s)
- Chi Liu
- Division of Transplantation ImmunologyNational Research Institute for Child Health and DevelopmentTokyoJapan
| | - Masayuki Fujino
- Division of Transplantation ImmunologyNational Research Institute for Child Health and DevelopmentTokyoJapan
- AIDS Research CenterNational Institute of Infectious DiseasesTokyoJapan
| | - Shuoji Zhu
- Guangdong Cardiovascular InstituteGuangdong Academy of Medical SciencesGuangdong Provincial People's HospitalGuangzhouChina
| | - Yoshitaka Isaka
- Department of NephrologyOsaka University Graduate School of MedicineJapan
| | | | | | | | | | - Ping Zhu
- Guangdong Cardiovascular InstituteGuangdong Academy of Medical SciencesGuangdong Provincial People's HospitalGuangzhouChina
| | - Xiao‐Kang Li
- Division of Transplantation ImmunologyNational Research Institute for Child Health and DevelopmentTokyoJapan
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Chelakkot VS, Som J, Yoshioka E, Rice CP, Rutihinda SG, Hirasawa K. Systemic MEK inhibition enhances the efficacy of 5-aminolevulinic acid-photodynamic therapy. Br J Cancer 2019; 121:758-767. [PMID: 31551581 PMCID: PMC6889170 DOI: 10.1038/s41416-019-0586-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 09/04/2019] [Accepted: 09/06/2019] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Protoporphyrin IX (PpIX) gets accumulated preferentially in 5-aminolevulinic acid (5-ALA)-treated cancer cells. Photodynamic therapy (PDT) utilises the accumulated PpIX to trigger cell death by light-induced generation of reactive oxygen species (ROS). We previously demonstrated that oncogenic Ras/MEK decreases PpIX accumulation in cancer cells. Here, we investigated whether combined therapy with a MEK inhibitor would improve 5-ALA-PDT efficacy. METHODS Cancer cells and mice models of cancer were treated with 5-ALA-PDT, MEK inhibitor or both MEK inhibitor and 5-ALA-PDT, and treatment efficacies were evaluated. RESULTS Ras/MEK negatively regulates the cellular sensitivity to 5-ALA-PDT as cancer cells pre-treated with a MEK inhibitor were killed more efficiently by 5-ALA-PDT. MEK inhibition promoted 5-ALA-PDT-induced ROS generation and programmed cell death. Furthermore, the combination of 5-ALA-PDT and a systemic MEK inhibitor significantly suppressed tumour growth compared with either monotherapy in mouse models of cancer. Remarkably, 44% of mice bearing human colon tumours showed a complete response with the combined treatment. CONCLUSION We demonstrate a novel strategy to promote 5-ALA-PDT efficacy by targeting a cell signalling pathway regulating its sensitivity. This preclinical study provides a strong basis for utilising MEK inhibitors, which are approved for treating cancers, to enhance 5-ALA-PDT efficacy in the clinic.
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Affiliation(s)
- Vipin Shankar Chelakkot
- Division of BioMedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, A1B 3V6, Canada
| | - Jayoti Som
- Division of BioMedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, A1B 3V6, Canada
| | - Ema Yoshioka
- Division of BioMedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, A1B 3V6, Canada
| | - Chantel P Rice
- Division of BioMedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, A1B 3V6, Canada
| | - Suzette G Rutihinda
- Division of BioMedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, A1B 3V6, Canada
| | - Kensuke Hirasawa
- Division of BioMedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, A1B 3V6, Canada.
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Wu SK, Santos MA, Marcus SL, Hynynen K. MR-guided Focused Ultrasound Facilitates Sonodynamic Therapy with 5-Aminolevulinic Acid in a Rat Glioma Model. Sci Rep 2019; 9:10465. [PMID: 31320671 PMCID: PMC6639400 DOI: 10.1038/s41598-019-46832-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 07/03/2019] [Indexed: 11/25/2022] Open
Abstract
Glioblastoma multiforme (GBM) continues to have a dismal prognosis and significant efforts are being made to develop more effective treatment methods. Sonodynamic therapy (SDT) is an emerging modality for cancer treatment which combines ultrasound with sonosensitizers to produce a localized cytotoxic effect. It has long been known that ultrasound exposure can cause both thermal and non-thermal bioeffects and it remains an open question to what degree does temperature impact the efficacy of SDT. In order to optimize the ultrasound parameters of SDT, transcranial MRI-guided focused ultrasound (MRgFUS) and real-time MRI thermometry were used to monitor the therapy in a rat brain tumor model. Experiments were performed using a C6 intracranial glioma tumor model in 37 male Sprague Dawley rats. Treatments were performed about 7 days following tumor implantation when the tumor reached 1-3 mm in diameter as determined by MRI. 5-aminolevulinic acid (5-ALA) was injected at a dose of 60 mg/kg six hours before sonication. MRgFUS at 1.06 MHz was delivered continuously at an in situ spatial-peak temporal-average intensity of 5.5 W/cm2 for 20 min. MR thermometry was acquired to monitor the temperature change in the brain during sonication. The tumor growth response for animals receiving 5-ALA alone, FUS alone, 5-ALA + FUS and a sham control group were evaluated with MRI every week following treatment. During 20 min of MRgFUS at 5.5 W/cm2, the temperature within the targeted brain tumor was elevated from 32.3 ± 0.5 °C and 37.2 ± 0.7 °C to 33.2 ± 0.9 °C and 38.4 ± 1.1 °C, respectively. Both the tumor growth inhibition and survival were significantly improved in the 5-ALA + FUS group with 32 °C or 37 °C as the starting core body (rectal) temperature. 5-ALA alone and FUS alone did not improve survival. These promising results indicate that relatively low power continuous wave transcranial MRgFUS in conjunction with 5-ALA can produce an inhibitory effect on rat brain tumor growth in the absence of thermal dose. Further investigation of the ultrasound parameters is needed to improve the therapeutic efficacy of MRgFUS and 5-ALA.
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Affiliation(s)
- Sheng-Kai Wu
- Physical Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada.
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada.
| | - Marc A Santos
- Physical Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Stuart L Marcus
- Sun Pharmaceutical Industries Inc., Princeton, New Jersey, United States
| | - Kullervo Hynynen
- Physical Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada.
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada.
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada.
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Xie J, Wang S, Li Z, Ao C, Wang J, Wang L, Peng X, Zeng K. 5-aminolevulinic acid photodynamic therapy reduces HPV viral load via autophagy and apoptosis by modulating Ras/Raf/MEK/ERK and PI3K/AKT pathways in HeLa cells. J Photochem Photobiol B 2019; 194:46-55. [PMID: 30925276 DOI: 10.1016/j.jphotobiol.2019.03.012] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/11/2019] [Accepted: 03/20/2019] [Indexed: 01/09/2023]
Abstract
Human papillomavirus (HPV) infection is linked to several diseases, the most prominent of which are cervical cancer and genital condyloma acuminatum. Previous studies have suggested an effective role for 5-aminolevulinic acid photodynamic therapy (ALA-PDT) against various cancers by the induction of autophagy and apoptosis. However, few reports have focused on the effectiveness of ALA-PDT on HPV related disorders. To identify the role of ALA-PDT in the context of HPV infection, we initially investigated 111 patients suffering from genital condyloma acuminatum. HPV viral load detected before and after ALA-PDT treatment was compared during this procedure; a significant difference was noted. HeLa (HPV18) cells were exposed to ALA-PDT in vitro to further explore the underlying mechanisms. Western blot analysis showed that ALA-PDT induces LC3II and p62 expression, along with the up regulation of caspase-3 and cleaved caspase-3. Our study also demonstrated that ALA-PDT treatment inhibits the proliferation of HeLa cells in a dose dependent manner and effectively reduces HPV viral load via autophagy and apoptosis by regulating the Ras/Raf/MEK/ERK and PI3K/AKT/mTOR pathways. Hydroxychloroquine (HCQ), although it inhibited autophagy degradation, functioned to activate reactive oxygen species (ROS) levels of ALA-PDT to enhance the observed effect. These findings suggest strategies for the improvement of PDT efficacy in patients.
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Affiliation(s)
- Jiajia Xie
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Sijia Wang
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Zhijia Li
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Chunping Ao
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Jingying Wang
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Li Wang
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Xiaoming Peng
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Kang Zeng
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
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Liu C, Zhu P, Fujino M, Isaka Y, Ito H, Takahashi K, Nakajima M, Tanaka T, Zhuang J, Li XK. 5-aminolaevulinic acid (ALA), enhances heme oxygenase (HO)-1 expression and attenuates tubulointerstitial fibrosis and renal apoptosis in chronic cyclosporine nephropathy. Biochem Biophys Res Commun 2019; 508:583-589. [PMID: 30514440 DOI: 10.1016/j.bbrc.2018.11.175] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 11/27/2018] [Indexed: 12/27/2022]
Abstract
BACKGROUND Cyclosporine-A (CsA) is an immunosuppressant indicated for various immunological diseases; however, it can induce chronic kidney injury. Oxidative stress and apoptosis play a crucial role in CsA-induced nephrotoxicity. The present study evaluated the protective effect of combining 5-aminolaevulinic acid with iron (5-ALA/SFC), a precursor of heme synthesis, to enhance HO-1 activity against CsA-induced chronic nephrotoxicity. METHODS Mice were divided into three groups: the control group (using olive oil as a vehicle), CsA-only group, and CsA+5-ALA/SFC group. After 28 days, the mice were sacrificed, and blood and kidney samples were collected. In addition to histological and biochemical examination, the mRNA expression of proinflammatory and profibrotic cytokines was assessed. RESULTS Renal function in the 5-ALA/SFC treatment group as assessed by the serum creatinine and serum urea nitrogen levels was superior to that of the CsA-only treatment group, demonstrating that 5-ALA/SFC significantly attenuated CsA-induced kidney tissue inflammation, fibrosis, apoptosis, and tubular atrophy, as well as reducing the mRNA level of TNF-α, IL-6, TGF-β1, and iNOS while increasing HO-1. CONCLUSION The activity of 5-ALA/SFC has important implications for clarifying the mechanism of HO-1 activity in CsA-induced nephrotoxicity and may provide a favorable basis for clinical therapy.
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Affiliation(s)
- Chi Liu
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Ping Zhu
- Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.
| | - Masayuki Fujino
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan; AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yoshitaka Isaka
- Department of Geriatric Medicine and Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
| | | | | | | | | | - Jian Zhuang
- Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xiao-Kang Li
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan.
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Liu T, Ma X, Ouyang T, Chen H, Xiao Y, Huang Y, Liu J, Xu M. Efficacy of 5-aminolevulinic acid-based photodynamic therapy against keloid compromised by downregulation of SIRT1-SIRT3-SOD2-mROS dependent autophagy pathway. Redox Biol 2019; 20:195-203. [PMID: 30368039 PMCID: PMC6205077 DOI: 10.1016/j.redox.2018.10.011] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 10/09/2018] [Accepted: 10/15/2018] [Indexed: 01/02/2023] Open
Abstract
Keloids exhibit cancer-like properties without spontaneous regression and usually recur post excision. Although photodynamic therapy (PDT) is a promising treatment, details of the mechanisms remain to be elucidated. In this study, we investigated mechanisms involved in 5-Aminolevulinic Acid (5-ALA)-based PDT against keloid. Found that 5-ALA-PDT induced superoxide anion-dependent autophagic cell death. Application of autophagy inhibitor 3-Methyladenine (3-MA) significantly prevented the effect that 5-ALA-PDT induced keloid-derived fibroblasts death, but Z-VAK-FMK (apoptotic inhibitor) did not. Interestingly, 5-ALA-PDT promoted the SIRT3 protein expression and the activity of mitochondrial superoxide dismutase 2 (SOD2), but SIRT1 protein expression level was decreased. SOD2 as a key enzyme can decrease mitochondrial ROS (mROS) level, Deacetylation of SOD2 by SIRT3 regulates SOD2 enzymatic activity has been identified. Then we explored SOD2 acetylation level with immunoprecipitation, found that 5-ALA-PDT significantly increased the acetylation levels of SOD2. In order to confirm deacetylation of SOD2 regulated by SIRT3, 3-TYP (SIRT3 inhibitor) was used. Found that inhibition of SIRT3 by 3-TYP significantly increased the level of SOD2 acetylation level compared with control group or 5-ALA-PDT group. To explore the connection of SIRT1 and SIRT3, cells were treated with EX527(SIRT1 inhibitor) or SRT1720 (SIRT1 activator), and EX527 increased SIRT3 protein level, however, SRT1720 displayed the opposite effect in the present or absence of 5-ALA-PDT. Moreover SIRT1-inhibited cells are more resistant to 5-ALA-PDT and showing decreased ROS accumulation. These results may demonstrate that 5-ALA-PDT induced SIRT1 protein level decreased, which promoted the effect of SIRT3 increased activity of SOD2 that can reduce mROS level, and then compromised 5-ALA-PDT induced autophagic cell death.
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Affiliation(s)
- Tao Liu
- Department of Plastic and Reconstructive Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, People's Republic of China
| | - Xiaorong Ma
- Department of Plastic and Reconstructive Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, People's Republic of China
| | - Tianxiang Ouyang
- Department of Plastic and Reconstructive Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, People's Republic of China.
| | - Huiping Chen
- Department of Plastic and Reconstructive Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, People's Republic of China
| | - Yan Xiao
- Department of Plastic and Reconstructive Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, People's Republic of China
| | - Yingying Huang
- Department of Plastic and Reconstructive Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, People's Republic of China
| | - Jun Liu
- Department of Plastic and Reconstructive Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, People's Republic of China
| | - Miao Xu
- Department of Plastic and Reconstructive Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, People's Republic of China
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Sugiyama Y, Hiraiwa Y, Hagiya Y, Nakajima M, Tanaka T, Ogura SI. 5-Aminolevulinic acid regulates the immune response in LPS-stimulated RAW 264.7 macrophages. BMC Immunol 2018; 19:41. [PMID: 30567499 PMCID: PMC6300011 DOI: 10.1186/s12865-018-0277-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 11/29/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Macrophages are crucial players in a variety of inflammatory responses to environmental cues. However, it has been widely reported that macrophages cause chronic inflammation and are involved in a variety of diseases, such as obesity, diabetes, metabolic syndrome, and cancer. In this study, we report the suppressive effect of 5-aminolevulinic acid (ALA), via the HO-1-related system, on the immune response of the LPS-stimulated mouse macrophage cell line RAW264.7. RESULTS RAW264.7 cells were treated with LPS with or without ALA, and proinflammatory mediator expression levels and phagocytic ability were assessed. ALA treatment resulted in the attenuation of iNOS and NO expression and the downregulation of proinflammatory cytokines (TNF-α, cyclooxygenase2, IL-1β, IL-6). In addition, ALA treatment did not affect the phagocytic ability of macrophages. To our knowledge, this study is the first to investigate the effect of ALA on macrophage function. Our findings suggest that ALA may have high potential as a novel anti-inflammatory agent. CONCLUSIONS In the present study, we showed that exogenous addition of ALA induces HO-1 and leads to the downregulation of NO and some proinflammatory cytokines. These findings support ALA as a promising anti-inflammatory agent.
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Affiliation(s)
- Yuta Sugiyama
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Kanagawa Japan
| | - Yukari Hiraiwa
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Kanagawa Japan
| | - Yuichiro Hagiya
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Kanagawa Japan
| | | | - Tohru Tanaka
- SBI Pharma CO., LTD., Roppongi, Tokyo, 106-6020 Japan
| | - Shun-ichiro Ogura
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Kanagawa Japan
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Schwake M, Nemes A, Dondrop J, Schroeteler J, Schipmann S, Senner V, Stummer W, Ewelt C. In-Vitro Use of 5-ALA for Photodynamic Therapy in Pediatric Brain Tumors. Neurosurgery 2018; 83:1328-1337. [PMID: 29538709 DOI: 10.1093/neuros/nyy054] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 02/01/2018] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Light irradiation (635 nm) of cells containing protoporphyrin IX (PPIX) after 5- aminolevulinic acid (5-ALA) pretreatment causes cell death via different pathways including apoptosis and necrosis, as previously demonstrated for malignant glioma cells. OBJECTIVE To elucidate whether various malignant pediatric brain tumors, which have been shown to accumulate PPIX, would also be susceptible to photodynamic therapy (PDT). METHODS Medulloblastoma (DAOY, UW228), pNET (PFSK-1), and rhabdoid tumor (BT16) cell lines were incubated with 5-ALA in variable concentrations for 4 h. Consequently, cells were irradiated by 635 nm diode laser light. After 12 h, cell viability was measured by WST-1 testing and these results were compared to control cells incubated with 5-ALA without irradiation or irradiation only without prior incubation with 5-ALA. RESULTS We demonstrated significant cell death in malignant pediatric tumor cells after incubation with 5-ALA and laser irradiation in comparison to control groups. In all cell lines, we noticed significant cell death above a 5-ALA concentration of 50 μg/ml (P < .05). Neither 5-ALA incubation alone nor irradiation alone caused cell death. DAOY and PFSK cell lines were more susceptible than UW228 and BT16 cells. CONCLUSION We conclude that PDT causes cell death with higher PPIX concentrations after exposure to 5-ALA in vitro in accordance to similar studies with glioma cells. This indicates that PDT might be feasible for eliminating brain tumor cells in malignant pediatric brain tumors. Additionally, we noticed a dependency between fluorescence intensity and death rates.
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Affiliation(s)
- Michael Schwake
- Department of Neurosurgery, University Hospital Muenster, Muenster, Germany
| | - Andrei Nemes
- Institute of Neuropathology, University Hospital Muenster, Muenster, Germany
| | - Jana Dondrop
- Department of Neurosurgery, University Hospital Muenster, Muenster, Germany
| | | | | | - Volker Senner
- Department of Neurosurgery, University Hospital Muenster, Muenster, Germany
| | - Walter Stummer
- Department of Neurosurgery, University Hospital Muenster, Muenster, Germany
| | - Christian Ewelt
- Department of Neurosurgery, University Hospital Muenster, Muenster, Germany
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Zhou T, Battah S, Mazzacuva F, Hider RC, Dobbin P, MacRobert AJ. Design of Bifunctional Dendritic 5-Aminolevulinic Acid and Hydroxypyridinone Conjugates for Photodynamic Therapy. Bioconjug Chem 2018; 29:3411-3428. [PMID: 30249090 DOI: 10.1021/acs.bioconjchem.8b00574] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Iron chelators have recently attracted interest in the field of photodynamic therapy (PDT) owing to their role in enhancement of intracellular protoporphyrin IX (PpIX) generation induced by 5-aminolevulinic acid (ALA) via the biosynthetic heme cycle. Although ALA is widely used in PDT, cellular uptake of ALA is limited by its hydrophilicity. In order to improve ALA delivery and enhance the PpIX production, several dendrimers incorporating both ALA and 3-hydroxy-4-pyridinone (HPO) were synthesized. The ability of the dendrimers to enter cells and be metabolized to the PpIX photosensitizer was studied in several human cancer cell lines. The dendrimers were found to be significantly more efficient than ALA alone in PpIX production. The higher intracellular PpIX levels showed a clear correlation with enhanced cellular phototoxicity following light exposure. Dendritic derivatives are therefore capable of efficiently delivering both ALA and HPO, which act synergistically to amplify in vitro PpIX levels and enhance PDT efficacy.
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Affiliation(s)
- Tao Zhou
- School of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou , Zhejiang 310035 , P.R. China
| | - Sinan Battah
- School of Biological Sciences , University of Essex , Wivenhoe Park , Colchester CO4 3SQ , U.K
- Division of Surgery and Interventional Science , University College London , Charles Bell House, 43-45 Foley Street , London W1W 7TS , U.K
| | - Francesca Mazzacuva
- Division of Pharmaceutical Sciences , King's College London , 150 Stamford Street , London SE1 9NH , U.K
| | - Robert C Hider
- Division of Pharmaceutical Sciences , King's College London , 150 Stamford Street , London SE1 9NH , U.K
| | - Paul Dobbin
- School of Biological Sciences , University of Essex , Wivenhoe Park , Colchester CO4 3SQ , U.K
| | - Alexander J MacRobert
- Division of Surgery and Interventional Science , University College London , Charles Bell House, 43-45 Foley Street , London W1W 7TS , U.K
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Gonçalvez KDO, Vieira DP, Courrol LC. Study of THP-1 Macrophage Viability after Sonodynamic Therapy Using Methyl Ester of 5-Aminolevulinic Acid Gold Nanoparticles. Ultrasound Med Biol 2018; 44:2009-2017. [PMID: 29936026 DOI: 10.1016/j.ultrasmedbio.2018.05.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 05/03/2018] [Accepted: 05/11/2018] [Indexed: 06/08/2023]
Abstract
Sonodynamic therapy (SDT) is emerging as new atherosclerosis treatment. The use of gold nanoparticles (AuNPs) as the vehicle for a sensitizer delivery improves reactive oxygen species formation. In this study, methyl ester of aminolevulinic acid (MALA) gold nanoparticles (MALA:AuNPs) functionalized with polyethylene glycol (PEG) were synthesized by photoreduction and characterized by ultraviolet/visible optical absorption, zeta potential and electron microscopy. The reactive oxygen species generation induced by ultrasound irradiation of MALA:AuNPs solutions was studied by observing the decrease in the 1,3-diphenylisobenzofuran emission band. The potential use of MALA:AuNPs as sensitizer for sonodynamic therapy was investigated on THP-1 macrophages. The cytotoxicity test was also described. The findings suggested that ultrasound combined with MALA:AuNPs provides impressive results in in vitro studies. Sonodynamic therapy with MALA:AuNPs through 2 minutes of ultrasound exposure (1 MHz and 1 W/cm2) culminated with total macrophage reduction. Thus, sonodynamic therapy combined with MALA:AuNPs has potential as a treatment for atherosclerosis.
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Affiliation(s)
- Karina de Oliveira Gonçalvez
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Departamento de Física, Universidade Federal de São Paulo, Diadema, São Paulo, Brazil
| | - Daniel Perez Vieira
- Centro de Biotecnologia, Instituto de Pesquisas Energéticas e Nucleares, São Paulo, São Paulo, Brazil
| | - Lilia Coronato Courrol
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Departamento de Física, Universidade Federal de São Paulo, Diadema, São Paulo, Brazil.
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Zheng DW, Fan JX, Liu XH, Dong X, Pan P, Xu L, Zhang XZ. A Simply Modified Lymphocyte for Systematic Cancer Therapy. Adv Mater 2018; 30:e1801622. [PMID: 29926990 DOI: 10.1002/adma.201801622] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 05/12/2018] [Indexed: 06/08/2023]
Abstract
Cytotherapy has received considerable attention in the field of cancer therapy, and various chemical or genetic methods have been applied to remold natural cells for improved therapeutic outcome of cytotherapy. A simple method to modify lymphocytes for cancer treatment by using a clinically used molecule, δ-aminolevulinic acid (δ-ALA), is reported here. After incubation with this molecule, tumor-targeted lymphocytes spontaneously synthesize anti-neoplastic drug protoporphyrin X (PpIX), and specifically accumulate in cancer tissue. Under periodic 630 nm laser irradiation, lymphocytes generate vesicle-like apoptotic body (Ab) containing the above-produced PpIX, and the facilitated delivery of PpIX from Ab makes an excellent therapeutic effect for Ras-mutated cancer cells under a second irradiation. Importantly, a microfluidic device is further fabricated to simplify cell sorting and drug synthesis with a one-step operation, which could promote generalization of this strategy. In vitro and in vivo studies confirm the success of such an easy-operated and global-regulated strategy for cancer therapy.
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Affiliation(s)
- Di-Wei Zheng
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China
| | - Jin-Xuan Fan
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China
| | - Xin-Hua Liu
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China
| | - Xue Dong
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China
| | - Pei Pan
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China
| | - Lu Xu
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China
| | - Xian-Zheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China
- The Institute for Advanced Studies, Wuhan University, Wuhan, 430072, P. R. China
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Kaneko T, Tominaga M, Kouzaki R, Hanyu A, Ueshima K, Yamada H, Suga M, Yamashita T, Okimoto T, Uto Y. Radiosensitizing Effect of 5-Aminolevulinic Acid and Protoporphyrin IX on Carbon-ion Beam Irradiation. Anticancer Res 2018; 38:4313-4317. [PMID: 29970567 DOI: 10.21873/anticanres.12730] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Carbon-ion beam is one of the most advanced radiations used for cancer treatment. However, there are tumors that are difficult to suppress with carbon-ion beam alone, thus necessitating development of drugs that can enhance its therapeutic effect. In this regard, the radiosensitizing effect of 5-aminolevulinic acid (ALA) and protoporphyrin IX (PpIX), that is a metabolic intermediate of ALA, on carbon-ion beam was investigated. MATERIALS AND METHODS Radiosensitizing activity, mitochondrial ROS and DNA double-strand break production of ALA and PpIX were evaluated by irradiation with 1.0 or 1.5-Gy carbon-ion beam to mouse mammary EMT6 tumor cells. RESULTS Combination of carbon-ion beam and ALA or PpIX showed a significant enhancement of its cytotoxic activity through a significant increase in ROS production in mitochondria. Furthermore, the combined activity of carbon-ion beam and ALA resulted in a significant increase in DNA double-strand breakage. CONCLUSION ALA selectively accumulates in the mitochondria and PpIX synthesized from ALA reacts with carbon-ion beam to produce ROS that exert antitumor activity.
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Affiliation(s)
- Tomoko Kaneko
- SAGA Heavy Ion Medical Accelerator in Tosu, Tosu, Japan
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima, Japan
| | - Masahide Tominaga
- Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Risa Kouzaki
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima, Japan
| | - Ayaka Hanyu
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima, Japan
| | - Kazuki Ueshima
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima, Japan
| | - Hisatsugu Yamada
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima, Japan
| | - Masaki Suga
- Hyogo Ion Beam Medical Center, Tatsuno, Japan
| | | | | | - Yoshihiro Uto
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima, Japan
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Roberts DW, Olson JD, Evans LT, Kolste KK, Kanick SC, Fan X, Bravo JJ, Wilson BC, Leblond F, Marois M, Paulsen KD. Red-light excitation of protoporphyrin IX fluorescence for subsurface tumor detection. J Neurosurg 2018; 128:1690-1697. [PMID: 28777025 PMCID: PMC5797501 DOI: 10.3171/2017.1.jns162061] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
OBJECTIVE The objective of this study was to detect 5-aminolevulinic acid (ALA)-induced tumor fluorescence from glioma below the surface of the surgical field by using red-light illumination. METHODS To overcome the shallow tissue penetration of blue light, which maximally excites the ALA-induced fluorophore protoporphyrin IX (PpIX) but is also strongly absorbed by hemoglobin and oxyhemoglobin, a system was developed to illuminate the surgical field with red light (620-640 nm) matching a secondary, smaller absorption peak of PpIX and detecting the fluorescence emission through a 650-nm longpass filter. This wide-field spectroscopic imaging system was used in conjunction with conventional blue-light fluorescence for comparison in 29 patients undergoing craniotomy for resection of high-grade glioma, low-grade glioma, meningioma, or metastasis. RESULTS Although, as expected, red-light excitation is less sensitive to PpIX in exposed tumor, it did reveal tumor at a depth up to 5 mm below the resection bed in 22 of 24 patients who also exhibited PpIX fluorescence under blue-light excitation during the course of surgery. CONCLUSIONS Red-light excitation of tumor-associated PpIX fluorescence below the surface of the surgical field can be achieved intraoperatively and enables detection of subsurface tumor that is not visualized under conventional blue-light excitation. Clinical trial registration no.: NCT02191488 (clinicaltrials.gov).
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Affiliation(s)
- David W. Roberts
- Section of Neurosurgery, Dartmouth-Hitchcock Medical Center, Lebanon
- Geisel School of Medicine, Dartmouth College, Hanover, New Hampshire
- Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Lebanon
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire
| | - Jonathan D. Olson
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire
| | - Linton T. Evans
- Section of Neurosurgery, Dartmouth-Hitchcock Medical Center, Lebanon
| | - Kolbein K. Kolste
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire
| | - Stephen C. Kanick
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire
| | - Xiaoyao Fan
- Section of Neurosurgery, Dartmouth-Hitchcock Medical Center, Lebanon
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire
| | - Jaime J. Bravo
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire
| | - Brian C. Wilson
- Princess Margaret Cancer Centre/University Health Network and Department of Medical Biophysics, University of Toronto, Ontario
| | - Frederic Leblond
- Department of Engineering Physics, Polytechnique Montreal, Quebec
- Centre de Recherche du Centre Hospitalier de l’Université de Montréal, Quebec, Canada
| | - Mikael Marois
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire
| | - Keith D. Paulsen
- Section of Neurosurgery, Dartmouth-Hitchcock Medical Center, Lebanon
- Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Lebanon
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire
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Yoneda T, Nonoguchi N, Ikeda N, Yagi R, Kawabata S, Furuse M, Hirose Y, Kuwabara H, Tamura Y, Kajimoto Y, Kuroiwa T. Spectral Radiance of Protoporphyrin IX Fluorescence and Its Histopathological Implications in 5-Aminolevulinic Acid-Guided Surgery for Glioblastoma. Photomed Laser Surg 2018; 36:266-272. [PMID: 29480754 DOI: 10.1089/pho.2017.4384] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE This study is intended to objectively clarify the relationship between the fluorescence intensity emitted by protoporphyrin IX (PpIX), which is a metabolite of 5-aminolevulinic acid (ALA), and histological findings during glioblastoma surgery. BACKGROUND ALA is widely used for the intraoperative detection of tumors. There are several reports about the fluorescence of PpIX and the histological findings of tumors, but judgments about the fluorescence intensity depend largely on the subjective sense of each surgeon. METHODS We quantified the PpIX fluorescence intensity emitted from tissue specimens using a spectroradiometer and evaluated the relationship between a spectral radiance of 635 nm and the histopathological features of surgical specimens of glioblastoma. Surgical samples from glioblastoma patients consist of a strongly fluorescent area (SFA) or vaguely fluorescent area (VFA). Hematoxylin and eosin staining, immunohistochemical Ki-67, and CD31 staining were performed to evaluate the cell density, MIB-1 index, and vascularity, respectively. The fluorescence intensities of each sample were compared with each histopathological parameter. RESULTS Cell density, MIB-1 index, and total vascular area were significantly correlated with PpIX fluorescence radiance. 87.5% of SFA were judged to be tumor bulk consisting mostly of tumor cells and 12.5% peritumoral invaded brain. In the VFA, 100% of specimens were judged to be peritumoral invaded brain. CONCLUSIONS ALA-induced PpIX fluorescence has quantitatively correlated well with histopathological malignant features both in SFA and VFA. These findings suggest that not only SFA but also VFA should be removed to the highest extent that does not cause neurological symptoms.
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Affiliation(s)
- Takashi Yoneda
- 1 Department of Neurosurgery, Osaka Medical College , Takatsuki, Japan
| | - Naosuke Nonoguchi
- 1 Department of Neurosurgery, Osaka Medical College , Takatsuki, Japan
| | - Naokado Ikeda
- 1 Department of Neurosurgery, Osaka Medical College , Takatsuki, Japan
| | - Ryokichi Yagi
- 1 Department of Neurosurgery, Osaka Medical College , Takatsuki, Japan
| | - Shinji Kawabata
- 1 Department of Neurosurgery, Osaka Medical College , Takatsuki, Japan
| | - Motomasa Furuse
- 1 Department of Neurosurgery, Osaka Medical College , Takatsuki, Japan
| | - Yoshinobu Hirose
- 2 Department of Pathology, Osaka Medical College , Takatsuki, Japan
| | - Hiroko Kuwabara
- 2 Department of Pathology, Osaka Medical College , Takatsuki, Japan
| | - Yoji Tamura
- 1 Department of Neurosurgery, Osaka Medical College , Takatsuki, Japan
| | | | - Toshihiko Kuroiwa
- 1 Department of Neurosurgery, Osaka Medical College , Takatsuki, Japan
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Matsuda F, Ikeda N, Kajimoto Y, Nonoguchi N, Takeuchi K, Fukumura M, Kawabata S, Furuse M, Sugano T, Sato T, Saito K, Kuroiwa T. Neurosurgical microscopic solid laser-based light inhibits photobleaching during fluorescence-guided brain tumor removal with 5-aminolevulinic acid. Photodiagnosis Photodyn Ther 2017; 20:120-124. [PMID: 28935534 DOI: 10.1016/j.pdpdt.2017.09.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 09/07/2017] [Accepted: 09/17/2017] [Indexed: 11/19/2022]
Abstract
BACKGROUND Fluorescence image guided surgery (FIGS) with 5-aminolevulinic acid for malignant gliomas improves surgical outcome. One of the problems during FIGS is photobleaching under surgical microscopic white light. A solid laser-based white light source for neurosurgery that we developed does not include light with a wavelength of around 405nm, which is strongly absorbed by protoporphyrin IX. In the present study, we examined the efficacy of this light source to prevent the photobleaching of protoporphyrin IX-induced fluorescence. METHODS Filter papers transfused with protoporphyrin IX solution and a coronally sectioned F98 glioma rat model pretreated with 50mg/kg 5-aminolevulinic acid were continuously exposed to white light. One group was exposed to conventional xenon-based white light and another group was exposed to laser-based white light. Fluorescence at a wavelength of 635nm was measured with a radiospectrometer (in vitro study) and the relative fluorescence brightness was also measured in digital images (in vivo study) under excitation from violet blue light emitted from diodes every 5min. RESULTS AND CONCLUSION Estimated time for 50% photobleaching was prolonged about two times in the laser-based white light exposure group compared with that in the xenon-based white light exposure group (9.1/18.7min). In the brain tumor rat model, it was also prolonged about 2.7 times (15.1/40.7min). A laser-based white light source may inhibit photobleaching during FIGS for malignant gliomas. This light source for neurosurgical microscopy has the potential to prolong the prognosis of malignant glioma patients.
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Affiliation(s)
- Fumitaka Matsuda
- Department of Neurosurgery and Endovascular Neurosurgery, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka 569-8686, Japan
| | - Naokado Ikeda
- Department of Neurosurgery and Endovascular Neurosurgery, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka 569-8686, Japan.
| | - Yoshinaga Kajimoto
- Department of Neurosurgery and Endovascular Neurosurgery, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka 569-8686, Japan
| | - Naosuke Nonoguchi
- Department of Neurosurgery and Endovascular Neurosurgery, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka 569-8686, Japan
| | - Koji Takeuchi
- Department of Neurosurgery and Endovascular Neurosurgery, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka 569-8686, Japan
| | - Masao Fukumura
- Department of Neurosurgery and Endovascular Neurosurgery, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka 569-8686, Japan
| | - Shinji Kawabata
- Department of Neurosurgery and Endovascular Neurosurgery, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka 569-8686, Japan
| | - Motomasa Furuse
- Department of Neurosurgery and Endovascular Neurosurgery, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka 569-8686, Japan
| | - Tetsuo Sugano
- Mitsubishi Electric Engineering Co., Ltd., 1 Baba-Zusho, Nagaokakyo, Kyoto 617-8550, Japan
| | - Taku Sato
- Department of Neurosurgery, Fukushima Medical University, 1 Hikarigaoka, Fukushima-shi, Fukushima 960-1295, Japan
| | - Kiyoshi Saito
- Department of Neurosurgery, Fukushima Medical University, 1 Hikarigaoka, Fukushima-shi, Fukushima 960-1295, Japan
| | - Toshihiko Kuroiwa
- Department of Neurosurgery and Endovascular Neurosurgery, Osaka Medical College, 2-7 Daigaku-Machi, Takatsuki, Osaka 569-8686, Japan
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Cornelius JF, Eismann L, Ebbert L, Senger B, Petridis AK, Kamp MA, Sorg RV, Steiger HJ. 5-Aminolevulinic acid-based photodynamic therapy of chordoma: In vitro experiments on a human tumor cell line. Photodiagnosis Photodyn Ther 2017; 20:111-115. [PMID: 28951177 DOI: 10.1016/j.pdpdt.2017.09.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 08/14/2017] [Accepted: 09/17/2017] [Indexed: 11/27/2022]
Abstract
BACKGROUND Chordomas are very rare tumors of the skull base and the sacrum. They show infiltrating and destructive growth and are known to be chemo- and radio-resistant. After surgical resection, the recurrence rate is high and overall survival limited. As current adjuvant treatments are ineffective, new treatment concepts are urgently needed. 5-aminolevulinic acid-based photodynamic therapy (5-ALA based PDT) showed promising results for malignant gliomas. However, it is unknown so far, whether chordomas accumulate protoporphyrin IX (PPIX) after application of 5-ALA and whether they are sensitive to subsequent 5-ALA based PDT. METHODS The immortalized human chordoma cells U-CH2 were used as in vitro model. After incubation for 4h or 6h with different 5-ALA concentrations, PPIX accumulation was determined by flow cytometry. To assess sensitivity to PDT, chordoma cells were incubated at 30.000cells/well (high cell density) or 15.000cells/well (low cell density) with graded doses of 5-ALA (0-50μg/ml) in 96-well plates and subsequently exposed to laser light of 635nm wavelength (18.75J/cm2). Cell survival was measured 24h after exposure to laser light using the WST-1 assay. RESULTS U-CH2 cells dose-dependently accumulated PPIX (ANOVA; p<0.0001). PPIX fluorescence was significantly higher, when cells were incubated with 5-ALA for 6h compared to 4h at higher 5-ALA concentrations (ANOVA/Bonferroni; p≤0.05 for≥30μg/ml 5-ALA). For both cell densities, a 5-ALA dose-dependent decline in viability was observed (ANOVA; p<0.0001). Viability was significantly lower at higher 5-ALA concentrations, when 30.000 cells/wells were treated compared to 15.000cells/well (ANOVA/Bonferroni; p≤0.001 for≥30μg/ml 5-ALA). LD50 was 30.25μg/ml 5-ALA. CONCLUSION The human UCH-2 cell line was a very useful in vitro model to study different effects of 5-ALA based PDT. For the first time, it could be shown that human chordoma cells may be destroyed by 5-ALA/PDT.
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Affiliation(s)
- Jan F Cornelius
- Department of Neurosurgery, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225, Düsseldorf, Germany.
| | - Lennert Eismann
- Department of Neurosurgery, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225, Düsseldorf, Germany; Neuro-oncological Research Laboratory, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Lara Ebbert
- Institute for Transplantation Diagnostics and Cell Therapeutics, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Brigitte Senger
- Department of Neurosurgery, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225, Düsseldorf, Germany; Neuro-oncological Research Laboratory, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Athanasios K Petridis
- Department of Neurosurgery, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Marcel Alexander Kamp
- Department of Neurosurgery, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Rüdiger V Sorg
- Institute for Transplantation Diagnostics and Cell Therapeutics, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Hans Jakob Steiger
- Department of Neurosurgery, Medical Faculty, Heinrich Heine University, Moorenstrasse 5, 40225, Düsseldorf, Germany
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Niu K, Ma X, Liang G, Ma H, Jia Z, Liu W, Yu Q. 5-Aminolevulinic acid modulates antioxidant defense systems and mitigates drought-induced damage in Kentucky bluegrass seedlings. Protoplasma 2017; 254:2083-2094. [PMID: 28321653 DOI: 10.1007/s00709-017-1101-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 03/07/2017] [Indexed: 05/22/2023]
Abstract
Drought stress occurs frequently and severely as a result of global climate change, and it exerts serious effects on plants. 5-Aminolevulinic acid (5-ALA) plays a crucial role in conferring abiotic stress tolerance in plants. To enhance the drought tolerance of turfgrass and investigate the effects of 5-ALA on antioxidant metabolism and gene expression under drought stress conditions, exogenous 5-ALA was applied by foliar spraying before Kentucky bluegrass (Poa pratensis L.) seedlings were exposed to drought [induced by 10% polyethylene glycol (PEG)] stress for 20 days. 5-ALA pretreatment increased turf quality (TQ) and leaf relative water content (RWC) while reducing reactive oxygen species (ROS) production including H2O2 content and O2•- generation rate, lipoxygenase (LOX) activity, and malondialdehyde (MDA) content under drought stress. 5-ALA pretreatment maintained ascorbate (AsA) and glutathione (GSH) contents and the ASA/DHA and GSH/GSSG ratios at high levels, and it enhanced the activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), glutathione peroxidase (GPX), dehydroascorbate reductase (DHAR), and glutathione reductase (GR), which are crucial for scavenging drought-induced ROS. In addition, 5-ALA upregulated the relative expression levels of Cu/ZnSOD, APX, GPX, and DHAR but downregulated those of CAT and GR under drought stress. These results indicated that the application of 5-ALA might improve turfgrass quality and promote drought tolerance in Kentucky bluegrass through reducing oxidative damage and increasing non-enzyme antioxidant levels and antioxidant enzyme activity at transcriptional and posttranscriptional levels.
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Affiliation(s)
- Kuiju Niu
- Key Laboratory of Grassland Ecosystem of Ministry of Education, College of Grassland Science, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Xiang Ma
- Academy of Animal Sciences and Veterinary, Qinghai University, Xining, 810016, People's Republic of China
| | - Guoling Liang
- Academy of Animal Sciences and Veterinary, Qinghai University, Xining, 810016, People's Republic of China
| | - Huiling Ma
- Key Laboratory of Grassland Ecosystem of Ministry of Education, College of Grassland Science, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China.
| | - Zhifeng Jia
- Academy of Animal Sciences and Veterinary, Qinghai University, Xining, 810016, People's Republic of China
| | - Wenhui Liu
- Academy of Animal Sciences and Veterinary, Qinghai University, Xining, 810016, People's Republic of China
| | - Qianqian Yu
- College of Horticulture, South China Agricultural University, Guangzhou, 510642, People's Republic of China
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Takase N, Inden M, Sekine SI, Ishii Y, Yonemitsu H, Iwashita W, Kurita H, Taketani Y, Hozumi I. Neuroprotective effect of 5-aminolevulinic acid against low inorganic phosphate in neuroblastoma SH-SY5Y cells. Sci Rep 2017; 7:5768. [PMID: 28720798 PMCID: PMC5515920 DOI: 10.1038/s41598-017-06406-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 06/13/2017] [Indexed: 12/17/2022] Open
Abstract
PiT-1 (encoded by SLC20A1) and PiT-2 (encoded by SLC20A2) are type-III sodium-dependent phosphate cotransporters (NaPiTs). Recently, SLC20A2 mutations have been found in patients with idiopathic basal ganglia calcification (IBGC), and were predicted to bring about an inability to transport Pi from the extracellular environment. Here we investigated the effect of low Pi loading on the human neuroblastoma SH-SY5Y and the human glioblastoma A172 cell lines. The results show a different sensitivity to low Pi loading and differential regulation of type-III NaPiTs in these cells. We also examined whether 5-aminolevulinic acid (5-ALA) inhibited low Pi loading-induced neurotoxicity in SH-SY5Y cells. Concomitant application of 5-ALA with low Pi loading markedly attenuated low Pi-induced cell death and mitochondrial dysfunction via the induction of HO-1 by p38 MAPK. The findings provide us with novel viewpoints to understand the pathophysiology of IBGC, and give a new insight into the clinical prevention and treatment of IBGC.
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Affiliation(s)
- Naoko Takase
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, Japan
| | - Masatoshi Inden
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, Japan
| | - Shin-Ichiro Sekine
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, Japan
| | - Yumi Ishii
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, Japan
| | - Hiroko Yonemitsu
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, Japan
| | - Wakana Iwashita
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, Japan
| | - Hisaka Kurita
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, Japan
| | - Yutaka Taketani
- Department of Clinical Nutrition and Food Management, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Isao Hozumi
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, Japan.
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Wang W, Tabu K, Hagiya Y, Sugiyama Y, Kokubu Y, Murota Y, Ogura SI, Taga T. Enhancement of 5-aminolevulinic acid-based fluorescence detection of side population-defined glioma stem cells by iron chelation. Sci Rep 2017; 7:42070. [PMID: 28169355 PMCID: PMC5294410 DOI: 10.1038/srep42070] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 01/05/2017] [Indexed: 01/20/2023] Open
Abstract
Cancer stem cells (CSCs) are dominantly responsible for tumor progression and chemo/radio-resistance, resulting in tumor recurrence. 5-aminolevulinic acid (ALA) is metabolized to fluorescent protoporphyrin IX (PpIX) specifically in tumor cells, and therefore clinically used as a reagent for photodynamic diagnosis (PDD) and therapy (PDT) of cancers including gliomas. However, it remains to be clarified whether this method could be effective for CSC detection. Here, using flow cytometry-based analysis, we show that side population (SP)-defined C6 glioma CSCs (GSCs) displayed much less 5-ALA-derived PpIX fluorescence than non-GSCs. Among the C6 GSCs, cells with ultralow PpIX fluorescence exhibited dramatically higher tumorigenicity when transplanted into the immune-deficient mouse brain. We further demonstrated that the low PpIX accumulation in the C6 GSCs was enhanced by deferoxamine (DFO)-mediated iron chelation, not by reserpine-mediated inhibition of PpIX-effluxing ABCG2. Finally, we found that the expression level of the gene for heme oxygenase-1 (HO-1), a heme degradation enzyme, was high in C6 GSCs, which was further up-regulated when treated with 5-ALA. Our results provide important new insights into 5-ALA-based PDD of gliomas, particularly photodetection of SP-defined GSCs by iron chelation based on their ALA-PpIX-Heme metabolism.
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Affiliation(s)
- Wenqian Wang
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, 1138510, Japan
| | - Kouichi Tabu
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, 1138510, Japan
| | - Yuichiro Hagiya
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259-B102, Nagatsuta-cho, Midori-ku, Yokohama, 2268501, Japan
| | - Yuta Sugiyama
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259-B102, Nagatsuta-cho, Midori-ku, Yokohama, 2268501, Japan
| | - Yasuhiro Kokubu
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, 1138510, Japan
| | - Yoshitaka Murota
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, 1138510, Japan
| | - Shun-ichiro Ogura
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259-B102, Nagatsuta-cho, Midori-ku, Yokohama, 2268501, Japan
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 B-47, Nagatsuta-cho, Midori-ku, Yokohama, 2268501, Japan
| | - Tetsuya Taga
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Bunkyo-ku, Tokyo, 1138510, Japan
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Qidwai A, Khan S, Md S, Fazil M, Baboota S, Narang JK, Ali J. Nanostructured lipid carrier in photodynamic therapy for the treatment of basal-cell carcinoma. Drug Deliv 2016; 23:1476-85. [PMID: 26978275 DOI: 10.3109/10717544.2016.1165310] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Accepted: 03/09/2016] [Indexed: 11/13/2022] Open
Abstract
Topical photodynamic therapy (PDT) is a promising alternative for malignant skin diseases such as basal-cell carcinoma (BCC), due to its simplicity, enhanced patient compliance, and localization of the residual photosensitivity to the site of application. However, insufficient photosensitizer penetration into the skin is the major issue of concern with topical PDT. Therefore, the aim of the present study was to enable penetration of photosensitizer to the different strata of the skin using a lipid nanocarrier system. We have attempted to develop a nanostructured lipid carrier (NLC) for the topical delivery of second-generation photosensitizer, 5-amino levulinic acid (5-ALA), whose hydrophilicity and charge characteristic limit its percutaneous absorption. The microemulsion technique was used for preparing 5-ALA-loaded NLC. The mean particle size, polydispersity index, and entrapment efficiency of the optimized NLC of 5-ALA were found to be 185.2 ± 1.20, 0.156 ± 0.02, and 76.8 ± 2.58%, respectively. The results of in vitro release and in vitro skin permeation studies showed controlled drug release and enhanced penetration into the skin, respectively. Confocal laser scanning microscopy and cell line studies respectively demonstrated that encapsulation of 5-ALA in NLC enhanced its ability to reach deeper skin layers and consequently, increased cytotoxicity.
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Affiliation(s)
- Afreen Qidwai
- a Department of Pharmaceutics , Faculty of Pharmacy, Jamia Hamdard , New Delhi , India
| | - Saba Khan
- a Department of Pharmaceutics , Faculty of Pharmacy, Jamia Hamdard , New Delhi , India
| | - Shadab Md
- b Department of Pharmaceutical Technology , School of Pharmacy, International Medical University (IMU) , Kuala Lumpur , Malaysia , and
| | - Mohammad Fazil
- a Department of Pharmaceutics , Faculty of Pharmacy, Jamia Hamdard , New Delhi , India
| | - Sanjula Baboota
- a Department of Pharmaceutics , Faculty of Pharmacy, Jamia Hamdard , New Delhi , India
| | - Jasjeet K Narang
- a Department of Pharmaceutics , Faculty of Pharmacy, Jamia Hamdard , New Delhi , India
- c Department of Pharmaceutics , Khalsa College of Pharmacy , Amritsar , India
| | - Javed Ali
- a Department of Pharmaceutics , Faculty of Pharmacy, Jamia Hamdard , New Delhi , India
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Pattanayak GK, Tripathy BC. Modulation of biosynthesis of photosynthetic pigments and light-harvesting complex in wild-type and gun5 mutant of Arabidopsis thaliana during impaired chloroplast development. Protoplasma 2016; 253:747-752. [PMID: 27001427 DOI: 10.1007/s00709-016-0958-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Accepted: 02/29/2016] [Indexed: 05/26/2023]
Abstract
Plants in response to different environmental cues need to modulate the expression of nuclear and chloroplast genomes that are in constant communication. To understand the signals that are responsible for inter-organellar communication, levulinic acid (LA), an inhibitor of 5-aminolevulinic acid dehydratase, was used to suppress the synthesis of pyrrole-derived tetrapyrroles chlorophylls. Although, it does not specifically inhibit carotenoid biosynthesis enzymes, LA reduced the carotenoid contents during photomorphogenesis of etiolated Arabidopsis seedlings. The expression of nuclear genes involved in carotenoid biosynthesis, i.e., geranylgeranyl diphosphate synthase, phytoene synthase, and phytoene desaturase, was downregulated in LA-treated seedlings. Similarly, the transcript abundance of nuclear genes, i.e., Lhcb1, PsbO, and RcbS, coding for chloroplastic proteins was severely attenuated in LA-treated samples. In contrast, LA treatment did not affect the transcript abundance of chalcone synthase, a marker gene for cytoplasm, and β-ATP synthase, a marker gene for mitochondria. This demonstrates the retrograde signaling from chloroplast to nucleus to suppress chloroplastic proteins during impaired chloroplast development. However, under identical conditions in LA-treated tetrapyrrole-deficient gun5 mutant, retrograde signal continued. The tetrapyrrole biosynthesis inhibitor LA suppressed formation of all tetrapyrroles both in WT and gun5. This rules out the role of tetrapyrroles as signaling molecules in WT and gun5. The removal of LA from the Arabidopsis seedlings restored the chlorophyll and carotenoid contents and expression of nuclear genes coding for chloroplastic proteins involved in chloroplast biogenesis. Therefore, LA could be used to modulate chloroplast biogenesis at a desired phase of chloroplast development.
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Affiliation(s)
- Gopal K Pattanayak
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Baishnab C Tripathy
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
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Afolayan OT, Webb CC, Cannon JL. Evaluation of a Porcine Gastric Mucin and RNase A Assay for the Discrimination of Infectious and Non-infectious GI.1 and GII.4 Norovirus Following Thermal, Ethanol, or Levulinic Acid Plus Sodium Dodecyl Sulfate Treatments. Food Environ Virol 2016; 8:70-78. [PMID: 26514820 DOI: 10.1007/s12560-015-9219-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 10/24/2015] [Indexed: 06/05/2023]
Abstract
Human noroviruses (NoVs) are a major source of foodborne illnesses worldwide. Since human NoVs cannot be cultured in vitro, methods that discriminate infectious from non-infectious NoVs are needed. The purpose of this study was to evaluate binding of NoV genotypes GI.1 and GII.4 to histo-blood group antigens expressed in porcine gastric mucin (PGM) as a surrogate for detecting infectious virus following thermal (99 °C/5 min), 70% ethanol or 0.5% levulinic acid (LV) plus 0.01 or 0.1% sodium dodecyl sulfate (SDS) sanitizer treatments and to determine the limit of detection of GI.1 and GII.4 binding to PGM. Treated and control virus samples were applied to 96-well plates coated with 1 µg/ml PGM followed by RNase A (5 ng/µl) treatment for degradation of exposed RNA. Average log genome copies per ml (gc/ml) reductions and relative differences (RD) in quantification cycle (Cq) values after thermal treatment were 1.77/5.62 and 1.71/7.25 (RNase A) and 1.73/5.50 and 1.56/6.58 (no RNase A) for GI.1 and GII.4, respectively. Treatment of NoVs with 70% EtOH resulted in 0.05/0.16 (GI.1) and 3.54/10.19 (GII.4) log reductions in gc/ml and average RD in Cq value, respectively. LV (0.5%) combined with 0.1 % SDS provided a greater decrease of GI.1 and GII.4 NoVs with 8.97 and 8.13 average RD in Cq values obtained, respectively than 0.5% LV/0.01 % SDS. Virus recovery after PGM binding was variable with GII.4 > GI.1. PGM binding is a promising surrogate for identifying infectious and non-infectious NoVs after capsid destruction, however, results vary depending on virus strain and inactivation method.
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Affiliation(s)
- Olamide T Afolayan
- Department of Food Science and Technology, Center for Food Safety, University of Georgia, 1109 Experiment Street, Griffin, GA, 30223, USA
| | - Cathy C Webb
- Department of Food Science and Technology, Center for Food Safety, University of Georgia, 1109 Experiment Street, Griffin, GA, 30223, USA.
| | - Jennifer L Cannon
- Department of Food Science and Technology, Center for Food Safety, University of Georgia, 1109 Experiment Street, Griffin, GA, 30223, USA.
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Gill RA, Ali B, Islam F, Farooq MA, Gill MB, Mwamba TM, Zhou W. Physiological and molecular analyses of black and yellow seeded Brassica napus regulated by 5-aminolivulinic acid under chromium stress. Plant Physiol Biochem 2015; 94:130-43. [PMID: 26079286 DOI: 10.1016/j.plaphy.2015.06.001] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 06/01/2015] [Accepted: 06/01/2015] [Indexed: 05/20/2023]
Abstract
Brassica napus L. is a promising oilseed crop among the oil producing species. So, it is prime concern to screen the metal tolerant genotypes in order to increase the oilseed rape production through the utilization of pollutant soil regimes. Nowadays, use of plant growth regulators against abiotic stress is one of the major objectives of researchers. In this study, an attempt was carried out to analyze the pivotal role of exogenously applied 5-amenolevulinic acid (ALA) on alleviating chromium (Cr)-toxicity in black and yellow seeded B. napus. Plants of two cultivars (ZS 758 - a black seed type, and Zheda 622 - a yellow seed type) were treated with 400 μM Cr with or without 15 and 30 mg/L ALA. Results showed that exogenously applied ALA improved the plant growth and increased ALA contents; however, it decreased the Cr concentration in B. napus leaves under Cr-toxicity. Moreover, exogenous ALA reduced oxidative stress by up-regulating antioxidant enzyme activities and their related gene expression. Further, results suggested that stress responsive protein's transcript level such as HSP90-1 and MT-1 were increased under Cr stress alone in both cultivars. Exogenously applied ALA further enhanced the expression rate in both genotypes and obviously results were found in favor of cultivar ZS 758. The ultrastructural changes were observed more obvious in yellow seeded than black seeded cultivar; however, exogenously applied ALA helped the plants to recover their cell turgidity under Cr stress. The present study describes a detailed molecular mechanism how ALA regulates the plant growth by improving antioxidant machinery and related transcript levels, cellular modification as well as stress related genes expression under Cr-toxicity.
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Affiliation(s)
- Rafaqat A Gill
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China
| | - Basharat Ali
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China
| | - Faisal Islam
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China
| | - Muhammad A Farooq
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China
| | - Muhammad B Gill
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China
| | - Theodore M Mwamba
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China
| | - Weijun Zhou
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China.
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Berezina N, Yada B. Improvement of the poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) production by dual feeding with levulinic acid and sodium propionate in Cupriavidus necator. N Biotechnol 2015; 33:231-6. [PMID: 26141376 DOI: 10.1016/j.nbt.2015.06.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 05/29/2015] [Accepted: 06/22/2015] [Indexed: 11/17/2022]
Abstract
In the context of increasing volatility of oil prices, replacement of petroleum based plastics by bioplastics is a topic of increasing interest. Poly(hydroxyalkanoate)s (PHAs) are among the most promising families in this field. Controlling composition of the polymer on the monomeric level remains a pivotal issue. This control is even more difficult to achieve when the polymer is not synthesized by chemists, but produced by nature, in this case, bacteria. In this study mechanism and role of two 3-hydroxyvalerate (3-HV) inducing substrates on the production of PHBV with high, 80%, 3-HV content were evaluated. It was found that levulinic acid contributes to biomass and bio-polymer content enhancement, whereas sodium propionate mainly contributes to 3-HV enhancement. Optimized proportions of feeding substrates at 1 g/L and 2.5 g/L, respectively for levulinic acid and sodium propionate allowed a 100% productivity enhancement, at 3.9 mg/L/hour, for the production of PHBV with 80% 3-HV.
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Affiliation(s)
- Nathalie Berezina
- Materia Nova R&D Centre, rue des Foudriers 1, 7822 Ghislenghien, Belgium.
| | - Bopha Yada
- Materia Nova R&D Centre, rue des Foudriers 1, 7822 Ghislenghien, Belgium.
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40
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Habe H, Sato S, Morita T, Fukuoka T, Kirimura K, Kitamoto D. Bacterial production of short-chain organic acids and trehalose from levulinic acid: a potential cellulose-derived building block as a feedstock for microbial production. Bioresour Technol 2015; 177:381-6. [PMID: 25479689 DOI: 10.1016/j.biortech.2014.11.048] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Revised: 11/10/2014] [Accepted: 11/11/2014] [Indexed: 05/21/2023]
Abstract
Levulinic acid (LA) is a platform chemical derived from cellulosic biomass, and the expansion of LA utilization as a feedstock is important for production of a wide variety of chemicals. To investigate the potential of LA as a substrate for microbial conversion to chemicals, we isolated and identified LA-utilizing bacteria. Among the six isolated strains, Pseudomonas sp. LA18T and Rhodococcus hoagie LA6W degraded up to 70 g/L LA in a high-cell-density system. The maximal accumulation of acetic acid by strain LA18T and propionic acid by strain LA6W was 13.6 g/L and 9.1 g/L, respectively, after a 4-day incubation. Another isolate, Burkholderia stabilis LA20W, produced trehalose extracellularly in the presence of 40 g/L LA to approximately 2 g/L. These abilities to produce useful compounds supported the potential of microbial LA conversion for future development and cellulosic biomass utilization.
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Affiliation(s)
- Hiroshi Habe
- Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5-2, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
| | - Shun Sato
- Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5-2, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Tomotake Morita
- Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5-2, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Tokuma Fukuoka
- Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5-2, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Kohtaro Kirimura
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, Tokyo 169-8555, Japan
| | - Dai Kitamoto
- Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5-2, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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Zhang S, Winestrand S, Chen L, Li D, Jönsson LJ, Hong F. Tolerance of the nanocellulose-producing bacterium Gluconacetobacter xylinus to lignocellulose-derived acids and aldehydes. J Agric Food Chem 2014; 62:9792-9. [PMID: 25186182 DOI: 10.1021/jf502623s] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Lignocellulosic biomass serves as a potential alternative feedstock for production of bacterial nanocellulose (BNC), a high-value-added product of bacteria such as Gluconacetobacter xylinus. The tolerance of G. xylinus to lignocellulose-derived inhibitors (formic acid, acetic acid, levulinic acid, furfural, and 5-hydroxymethylfurfural) was investigated. Whereas 100 mM formic acid completely suppressed the metabolism of G. xylinus, 250 mM of either acetic acid or levulinic acid still allowed glucose metabolism and BNC production to occur. Complete suppression of glucose utilization and BNC production was observed after inclusion of 20 and 30 mM furfural and 5-hydroxymethylfurfural, respectively. The bacterium oxidized furfural and 5-hydroxymethylfurfural to furoic acid and 5-hydroxymethyl-2-furoic acid, respectively. The highest yields observed were 88% for furoic acid/furfural and 76% for 5-hydroxymethyl-2-furoic acid/5-hydroxymethylfurfural. These results are the first demonstration of the capability of G. xylinus to tolerate lignocellulose-derived inhibitors and to convert furan aldehydes.
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Affiliation(s)
- Shuo Zhang
- China-Sweden Associated Research Laboratory in Industrial Biotechnology and ‡Group of Microbiological Engineering and Industrial Biotechnology, College of Chemistry, Chemical Engineering and Biotechnology, and #School of Environmental Science and Engineering, Donghua University , Shanghai 201620, China
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Wang BY, Hong J, Ciancio SG, Zhao T, Doyle MP. A novel formulation effective in killing oral biofilm bacteria. J Int Acad Periodontol 2012; 14:56-61. [PMID: 22908534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
OBJECTIVE To determine if a novel formulation is effective in killing oral biofilm streptococci in vitro and in vivo. METHODS Efficacy of 0.5% levulinic acid and 0.05% sodium dodecyl sulfate (SDS) in killing Streptococcus gordonii CH1, Streptococcus gordonii DL1, Streptococcus mitis NCTC10712, Streptococcus oralis KS32AR, Streptococcus mutans BM71, and Streptococcus mutans GS5 in their biofilm form was measured in vitro, using microtiter plates and subsequent counts on Mitis-Salivarius agar plates. The safety and efficacy in vivo were evaluated using a mouse model. RESULTS Our anti-microbial formulation completely eliminated all the biofilm streptococcal species tested within 30 seconds (a reduction of 10(7) CFU/ml), whereas the positive control Listerine only demonstrated moderate reduction in vitro. Application of the formulation twice a day for 7 days in the murine oral cavity resulted in significantly more reduction of established S. gordonii DL1 oral biofilm bacteria than Listerine. The formulation did not cause any adverse effect in the murine oral cavity within a 2-week period. CONCLUSIONS We have demonstrated that the novel mouth rinse exhibits high efficacy in killing oral bacteria in their biofilm forms, results in no adverse effect in vivo, and contains alcohol-free components.
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Affiliation(s)
- Bing-Yan Wang
- Department of Periodontics, School of Dentistry, University of Texas Health Science Center at Houston, Houston, TX 77030, USA.
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Ortega YR, Torres MP, Tatum JM. Efficacy of levulinic acid-sodium dodecyl sulfate against Encephalitozoon intestinalis, Escherichia coli O157:H7, and Cryptosporidium parvum. J Food Prot 2011; 74:140-4. [PMID: 21219777 DOI: 10.4315/0362-028x.jfp-10-104] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Foodborne parasites are characterized as being highly resistant to sanitizers used by the food industry. In 2009, a study reported the effectiveness of levulinic acid in combination with sodium dodecyl sulfate (SDS) in killing foodborne bacteria. Because of their innocuous properties, we studied the effects of levulinic acid and SDS at various concentrations appropriate for use in foods, on the viability of Cryptosporidium parvum and Encephalitozoon intestinalis. The viability of Cryptosporidium and E. intestinalis was determined by in vitro cultivation using the HCT-8 and RK-13 cell lines, respectively. Two Escherichia coli O157:H7 isolates were also used in the present study: strain 932 (a human isolate from a 1992 Oregon meat outbreak) and strain E 0018 (isolated from calf feces). Different concentrations and combinations of levulinic acid and SDS were tested for their ability to reduce infectivity of C. parvum oocysts (10(5)), E. intestinalis spores (10(6)), and E. coli O157:H7 (10(7)/ml) when in suspension. Microsporidian spores were treated for 30 and 60 min at 20 ± 2°C. None of the combinations of levulinic acid and SDS were effective at inactivating the spores or oocysts. When Cryptosporidium oocysts were treated with higher concentrations (3% levulinic acid-2% SDS and 2% levulinic acid-1% SDS) for 30, 60, and 120 min, viability was unaffected. E. coli O157:H7, used as a control, was highly sensitive to the various concentrations and exposure times tested. SDS and levulinic acid alone had very limited effect on E. coli O157:H7 viability, but in combination they were highly effective at 30 and 60 min of incubation. In conclusion, Cryptosporidium and microsporidia are not inactivated when treated for various periods of time with 2% levulinic acid-1% SDS or 3% levulinic acid-2% SDS at 20°C, suggesting that this novel sanitizer cannot be used to eliminate parasitic contaminants in foods.
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Affiliation(s)
- Ynes R Ortega
- Center for Food Safety, University of Georgia, Griffin, Georgia 30223, USA.
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Guan W, Huang L, Fan X. Acids in combination with sodium dodecyl sulfate caused quality deterioration of fresh-cut iceberg lettuce during storage in modified atmosphere package. J Food Sci 2010; 75:S435-40. [PMID: 21535517 DOI: 10.1111/j.1750-3841.2010.01786.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Recent studies showed that sodium acid sulfate (SAS) and levulinic acid (LA) in combination with sodium dodecyl sulfate (SDS) was effective in inactivating human pathogens on Romaine lettuce. The present study investigated the effects of LA and SAS in combination with SDS (as compared with citric acid and chlorine) on the inactivation of E. coli O157:H7 and sensory quality of fresh-cut Iceberg lettuce in modified atmosphere packages during storage at 4 °C. Results showed that LA (0.5% to 3%) and SAS (0.25% to 0.75%) with 0.05% SDS caused detrimental effects on visual quality and texture of lettuce. LA- and SAS-treated samples were sensorially unacceptable due to development of sogginess and softening after 7 and 14 d storage. It appears that the combined treatments caused an increase in the respiration rate of fresh-cut lettuce as indicated by higher CO(2) and lower O(2) in modified atmosphere packages. On the positive side, the acid treatments inhibited cut edge browning of lettuce pieces developed during storage. LA (0.5%), SAS (0.25%), and citric acid (approximately 0.25%) in combination with SDS reduced population of E. coli OH157:H7 by 0.41, 0.87, and 0.58 log CFU/g, respectively, while chlorine achieved a reduction of 0.94 log CFU/g without damage to the lettuce. Therefore, compared to chlorine, LA and SAS in combination with SDS have limited commercial value for fresh-cut Iceberg lettuce due to quality deterioration during storage.
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Affiliation(s)
- Wenqiang Guan
- Tianjin Key Laboratory of Postharvest Physiology and Storage of Agricultural Products, National Engineering and Technology Research Center for Preservation of Agriculture Products, Tianjin 300384, China
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45
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Zhao T, Zhao P, Doyle MP. Inactivation of Salmonella and Escherichia coli O157:H7 on lettuce and poultry skin by combinations of levulinic acid and sodium dodecyl sulfate. J Food Prot 2009; 72:928-36. [PMID: 19517717 DOI: 10.4315/0362-028x-72.5.928] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Four organic acids (lactic acid, acetic acid, caprylic acid, and levulinic acid) and sodium dodecyl sulfate (SDS) were evaluated individually or in combination for their ability to inactivate Salmonella and Escherichia coli O157:H7. Results from pure culture assays in water with the treatment chemical revealed that 0.5% organic acid and 0.05 to 1% SDS, when used individually, reduced pathogen cell numbers by < or = 2 log CFU/ml within 20 min at 21 degrees C. The combination of any of these organic acids at 0.5% with 0.05% SDS resulted in > 7 log CFU/ml inactivation of Salmonella and E. coli O157:H7 within 10 s at 21 degrees C. A combination of levulinic acid and SDS was evaluated at different concentrations for pathogen reduction on lettuce at 21 degrees C, on poultry (wings and skin) at 8 degrees C, and in water containing chicken feces or feathers at 21 degrees C. Results revealed that treatment of lettuce with a combination of 3% levulinic acid plus 1% SDS for < 20 s reduced both Salmonella and E. coli O157:H7 populations by > 6.7 log CFU/g on lettuce. Salmonella and aerobic bacterial populations on chicken wings were reduced by > 5 log CFU/g by treatment with 3% levulinic acid plus 2% SDS for 1 min. Treating water heavily contaminated with chicken feces with 3% levulinic acid plus 2% SDS reduced Salmonella populations by > 7 log CFU/ml within 20 s. The use of levulinic acid plus SDS as a wash solution may have practical application for killing foodborne enteric pathogens on fresh produce and uncooked poultry.
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Affiliation(s)
- Tong Zhao
- Center for Food Safety, University of Georgia, 1109 Experiment Street, Griffin, Georgia 30223, USA
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He XM, Zhou J, Cheng Y, Fan J. [Purification and production of the extracellular 5-aminolevulinate from recombiniant Escherichia coli expressing yeast ALAS]. Sheng Wu Gong Cheng Xue Bao 2007; 23:520-4. [PMID: 17578005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Aminolevulinic acid (ALA) is biosynthesized by the enzyme ALA synthase (ALAS). The ALA production has been studied using the overproducing ALAS from several bacteria in Escherchia coil, respectively. However, ALAS from eucaryote expressed in E. coli for producing ALA in the culture is not known. The extracellular ALA production and cell growth were investageted respectively using the recombinant E. coli overproducing Saccharomyces cerevisiae ALAS in shake-flask fermentations. The ALAS activity from the cell extract was assayed. The extracellular ALA was purified by the national-made large-dimension resins and confirmed by the capillary electrophoresis measurements. At 12h after induction at 37 degrees C, the extracellular ALA production was up to 162mg per liter LB culture at initial pH 6.5 with exogenous levulinate, succinate and and glycine at the concentration of 20 mmol/L respectively. The purity of ALA after purification is up to 90%.
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Affiliation(s)
- Xiao-Mei He
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
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48
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Tangprasittipap A, Prasertsan P, Choorit W, Sasaki K. Biosynthesis of intracellular 5-aminolevulinic acid by a newly identified halotolerant Rhodobacter sphaeroides. Biotechnol Lett 2007; 29:773-8. [PMID: 17245554 DOI: 10.1007/s10529-006-9303-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2006] [Revised: 12/14/2006] [Accepted: 12/18/2006] [Indexed: 11/26/2022]
Abstract
Of 23 strains of halotolerant (up to 12% w/v NaCl) photosynthetic bacteria isolated from various sources, one isolate, SH5, accumulated intracellular 5-aminolevulinic acid (ALA) at 0.45 microg/g dry cell wt (DCW) growing aerobically in the dark. The strain was identified as Rhodobacter sphaeroides using 16S rDNA sequencing. Biosynthesis of ALA was enhanced to 14 microg/g DCW using modified glutamate/glucose (50 mM) medium with the addition of 10 mM levulinic acid after 24 h cultivation. Addition of 30 microM Fe(2+) to this medium increased the yield to 226 microg/g DCW.
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Affiliation(s)
- Amornrat Tangprasittipap
- Department of Industrial Biotechnology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand
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Rilk-van Gessel R, Kayser H. Porphobilinogen synthase from the butterfly, Pieris brassicae: purification and comparative characterization. J Insect Sci 2007; 7:1-13. [PMID: 20302542 PMCID: PMC2999460 DOI: 10.1673/031.007.6201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2007] [Accepted: 05/09/2007] [Indexed: 05/29/2023]
Abstract
Porphobilinogen represents a key building block of tetrapyrroles serving as functional ligands of many vitally important proteins. Here we report the first purification of porphobilinogen synthase (PBGS) from whole insects by sequentially employing two modes of native electrophoresis on polyacrylamide gels subsequent to more conventional procedures. Using adults of Pieris brassicae L. (Lepidoptera: Pieridae) we achieved approximately 10,000-fold purification with final yields of up to 25% of electrophoretically pure PBGS with a specific activity of approximately 160 micromol PBG h(-1) mg(-1) at 37 degrees C and an affinity of 0.36 mM to its substrate 5-aminolevulinic acid. Enzyme activity was inhibited by the substrate mimics, levulinic acid and succinylacetone, and by chelating agents. PBGS behaved as a relatively heat-stable octameric complex of 292.3 kDa composed of 36.5 kDa subunits. Most general features of this insect PBGS were comparable to those published for other animal PBGS enzymes, while remarkable differences were found to the reported recombinant Drosophila enzyme. Moreover, rabbit antiserum directed against purified Pieris PBGS revealed significant immunological differences among insect PBGS enzymes from a wide range of orders contrasting to the overall evolutionary conserved features of this enzyme.
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Affiliation(s)
- Roland Rilk-van Gessel
- Department of General Zoology and Endocrinology (Biology I), University of Ulm, Albert-Einstein-Allee 11, D-89069 Ulm, Germany
| | - Hartmut Kayser
- Department of General Zoology and Endocrinology (Biology I), University of Ulm, Albert-Einstein-Allee 11, D-89069 Ulm, Germany
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Abstract
Public health officials and tobacco researchers have raised concerns about the possible contributions of additives to the toxicity of cigarettes. However, little attention has been given to the process whereby additives promote initiation and addiction. Levulinic acid is a known cigarette additive. Review of internal tobacco industry documents indicates that levulinic acid was used to increase nicotine yields while enhancing perceptions of smoothness and mildness. Levulinic acid reduces the pH of cigarette smoke and desensitizes the upper respiratory tract, increasing the potential for cigarette smoke to be inhaled deeper into the lungs. Levulinic acid also may enhance the binding of nicotine to neurons that ordinarily would be unresponsive to nicotine. These findings held particular interest in the internal development of ultralight and so-called reduced-exposure cigarette prototypes. Industry studies found significantly increased peak plasma nicotine levels in smokers of ultralight cigarettes following addition of levulinic acid. Further, internal studies observed changes in mainstream and sidestream smoke composition that may present increased health risks. The use of levulinic acid illustrates the need for regulatory authority over tobacco products as well as better understanding of the role of additives in cigarettes and other tobacco products.
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Affiliation(s)
- Lois Keithly
- Massachusetts Department of Public Health Tobacco Control Program, Boston, MA 02108, USA.
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