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Ullah A, Jiao W, Shen B. The role of proinflammatory cytokines and CXC chemokines (CXCL1-CXCL16) in the progression of prostate cancer: insights on their therapeutic management. Cell Mol Biol Lett 2024; 29:73. [PMID: 38745115 PMCID: PMC11094955 DOI: 10.1186/s11658-024-00591-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 05/06/2024] [Indexed: 05/16/2024] Open
Abstract
Reproductive cancers are malignancies that develop in the reproductive organs. One of the leading cancers affecting the male reproductive system on a global scale is prostate cancer (PCa). The negative consequences of PCa metastases endure and are severe, significantly affecting mortality and life quality for those who are affected. The association between inflammation and PCa has captured interest for a while. Inflammatory cells, cytokines, CXC chemokines, signaling pathways, and other elements make up the tumor microenvironment (TME), which is characterized by inflammation. Inflammatory cytokines and CXC chemokines are especially crucial for PCa development and prognosis. Cytokines (interleukins) and CXC chemokines such as IL-1, IL-6, IL-7, IL-17, TGF-β, TNF-α, CXCL1-CXCL6, and CXCL8-CXCL16 are thought to be responsible for the pleiotropic effects of PCa, which include inflammation, progression, angiogenesis, leukocyte infiltration in advanced PCa, and therapeutic resistance. The inflammatory cytokine and CXC chemokines systems are also promising candidates for PCa suppression and immunotherapy. Therefore, the purpose of this work is to provide insight on how the spectra of inflammatory cytokines and CXC chemokines evolve as PCa develops and spreads. We also discussed recent developments in our awareness of the diverse molecular signaling pathways of these circulating cytokines and CXC chemokines, as well as their associated receptors, which may one day serve as PCa-targeted therapies. Moreover, the current status and potential of theranostic PCa therapies based on cytokines, CXC chemokines, and CXC receptors (CXCRs) are examined.
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Affiliation(s)
- Amin Ullah
- Joint Laboratory of Artificial Intelligence for Critical Care Medicine, Department of Critical Care Medicine and Institutes for Systems Genetics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Wang Jiao
- Joint Laboratory of Artificial Intelligence for Critical Care Medicine, Department of Critical Care Medicine and Institutes for Systems Genetics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Bairong Shen
- Joint Laboratory of Artificial Intelligence for Critical Care Medicine, Department of Critical Care Medicine and Institutes for Systems Genetics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, China.
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2
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Aebisher D, Przygórzewska A, Myśliwiec A, Dynarowicz K, Krupka-Olek M, Bożek A, Kawczyk-Krupka A, Bartusik-Aebisher D. Current Photodynamic Therapy for Glioma Treatment: An Update. Biomedicines 2024; 12:375. [PMID: 38397977 PMCID: PMC10886821 DOI: 10.3390/biomedicines12020375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/02/2024] [Accepted: 02/03/2024] [Indexed: 02/25/2024] Open
Abstract
Research on the development of photodynamic therapy for the treatment of brain tumors has shown promise in the treatment of this highly aggressive form of brain cancer. Analysis of both in vivo studies and clinical studies shows that photodynamic therapy can provide significant benefits, such as an improved median rate of survival. The use of photodynamic therapy is characterized by relatively few side effects, which is a significant advantage compared to conventional treatment methods such as often-used brain tumor surgery, advanced radiotherapy, and classic chemotherapy. Continued research in this area could bring significant advances, influencing future standards of treatment for this difficult and deadly disease.
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Affiliation(s)
- David Aebisher
- Department of Photomedicine and Physical Chemistry, Medical College of the Rzeszów University, 35-959 Rzeszów, Poland
| | - Agnieszka Przygórzewska
- English Division Science Club, Medical College of the Rzeszów University, 35-025 Rzeszów, Poland;
| | - Angelika Myśliwiec
- Center for Innovative Research in Medical and Natural Sciences, Medical College of the Rzeszów University, 35-310 Rzeszów, Poland; (A.M.); (K.D.)
| | - Klaudia Dynarowicz
- Center for Innovative Research in Medical and Natural Sciences, Medical College of the Rzeszów University, 35-310 Rzeszów, Poland; (A.M.); (K.D.)
| | - Magdalena Krupka-Olek
- Clinical Department of Internal Medicine, Dermatology and Allergology, Medical University of Silesia in Katowice, M. Sklodowskiej-Curie 10, 41-800 Zabrze, Poland; (M.K.-O.); (A.B.)
| | - Andrzej Bożek
- Clinical Department of Internal Medicine, Dermatology and Allergology, Medical University of Silesia in Katowice, M. Sklodowskiej-Curie 10, 41-800 Zabrze, Poland; (M.K.-O.); (A.B.)
| | - Aleksandra Kawczyk-Krupka
- Department of Internal Medicine, Angiology and Physical Medicine, Center for Laser Diagnostics and Therapy, Medical University of Silesia in Katowice, Batorego 15 Street, 41-902 Bytom, Poland
| | - Dorota Bartusik-Aebisher
- Department of Biochemistry and General Chemistry, Medical College of the Rzeszów University, 35-025 Rzeszów, Poland;
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Hsia T, Small JL, Yekula A, Batool SM, Escobedo AK, Ekanayake E, You DG, Lee H, Carter BS, Balaj L. Systematic Review of Photodynamic Therapy in Gliomas. Cancers (Basel) 2023; 15:3918. [PMID: 37568734 PMCID: PMC10417382 DOI: 10.3390/cancers15153918] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/27/2023] [Accepted: 07/29/2023] [Indexed: 08/13/2023] Open
Abstract
Over the last 20 years, gliomas have made up over 89% of malignant CNS tumor cases in the American population (NIH SEER). Within this, glioblastoma is the most common subtype, comprising 57% of all glioma cases. Being highly aggressive, this deadly disease is known for its high genetic and phenotypic heterogeneity, rendering a complicated disease course. The current standard of care consists of maximally safe tumor resection concurrent with chemoradiotherapy. However, despite advances in technology and therapeutic modalities, rates of disease recurrence are still high and survivability remains low. Given the delicate nature of the tumor location, remaining margins following resection often initiate disease recurrence. Photodynamic therapy (PDT) is a therapeutic modality that, following the administration of a non-toxic photosensitizer, induces tumor-specific anti-cancer effects after localized, wavelength-specific illumination. Its effect against malignant glioma has been studied extensively over the last 30 years, in pre-clinical and clinical trials. Here, we provide a comprehensive review of the three generations of photosensitizers alongside their mechanisms of action, limitations, and future directions.
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Affiliation(s)
- Tiffaney Hsia
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Julia L. Small
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA 02114, USA
- Chan Medical School, University of Massachusetts, Worcester, MA 01605, USA
| | - Anudeep Yekula
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA 02114, USA
- Department of Neurosurgery, University of Minnesota, Minneapolis, MN 554414, USA
| | - Syeda M. Batool
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Ana K. Escobedo
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Emil Ekanayake
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Dong Gil You
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Hakho Lee
- Center for Systems Biology, Massachusetts General Hospital Research Institute, Boston, MA 02114, USA
- Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Bob S. Carter
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA 02114, USA
- Harvard Medical School, Boston, MA 02215, USA
| | - Leonora Balaj
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA 02114, USA
- Harvard Medical School, Boston, MA 02215, USA
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Yu R, Maswikiti EP, Yu Y, Gao L, Ma C, Ma H, Deng X, Wang N, Wang B, Chen H. Advances in the Application of Preclinical Models in Photodynamic Therapy for Tumor: A Narrative Review. Pharmaceutics 2023; 15:pharmaceutics15010197. [PMID: 36678826 PMCID: PMC9867105 DOI: 10.3390/pharmaceutics15010197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/29/2022] [Accepted: 01/01/2023] [Indexed: 01/09/2023] Open
Abstract
Photodynamic therapy (PDT) is a non-invasive laser light local treatment that has been utilized in the management of a wide variety of solid tumors. Moreover, the evaluation of efficacy, adverse reactions, the development of new photosensitizers and the latest therapeutic regimens are inseparable from the preliminary exploration in preclinical studies. Therefore, our aim was to better comprehend the characteristics and limitations of these models and to provide a reference for related research. METHODS We searched the databases, including PubMed, Web of Science and Scopus for the past 25 years of original research articles on the feasibility of PDT in tumor treatment based on preclinical experiments and animal models. We provided insights into inclusion and exclusion criteria and ultimately selected 40 articles for data synthesis. RESULTS After summarizing and comparing the methods and results of these studies, the experimental model selection map was drawn. There are 7 main preclinical models, which are used for different research objectives according to their characteristics. CONCLUSIONS Based on this narrative review, preclinical experimental models are crucial to the development and promotion of PDT for tumors. The traditional animal models have some limitations, and the emergence of organoids may be a promising new insight.
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Affiliation(s)
- Rong Yu
- The Second Clinical College of Medicine, Lanzhou University, Lanzhou 730030, China
| | | | - Yang Yu
- The Second Clinical College of Medicine, Lanzhou University, Lanzhou 730030, China
| | - Lei Gao
- The Second Clinical College of Medicine, Lanzhou University, Lanzhou 730030, China
| | - Chenhui Ma
- The Second Clinical College of Medicine, Lanzhou University, Lanzhou 730030, China
| | - Huanhuan Ma
- The Second Clinical College of Medicine, Lanzhou University, Lanzhou 730030, China
| | - Xiaobo Deng
- The Second Clinical College of Medicine, Lanzhou University, Lanzhou 730030, China
| | - Na Wang
- The Second Clinical College of Medicine, Lanzhou University, Lanzhou 730030, China
| | - Bofang Wang
- The Second Clinical College of Medicine, Lanzhou University, Lanzhou 730030, China
| | - Hao Chen
- Department of Surgical Oncology, Second Hospital of Lanzhou University, Lanzhou 730030, China
- Key Laboratory of Digestive System Tumor of Gansu Province, Second Hospital of Lanzhou University, Lanzhou 730030, China
- Correspondence: ; Tel.: +86-0931-5190550
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Interstitial Photodynamic Therapy Using 5-ALA for Malignant Glioma Recurrences. Cancers (Basel) 2021; 13:cancers13081767. [PMID: 33917116 PMCID: PMC8067827 DOI: 10.3390/cancers13081767] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/26/2021] [Accepted: 03/29/2021] [Indexed: 12/15/2022] Open
Abstract
Interstitial photodynamic therapy (iPDT) using 5-aminolevulinic acid (5-ALA)-induced protoporphyrin IX (PpIX) as a cytotoxic photosensitizer could be a feasible treatment option for malignant gliomas. In a monocentric cohort of consecutive patients treated between 2006 and 2018, a risk profile analysis of salvage iPDT for local malignant glioma recurrences and associated outcome measures are presented here. It was considered indicated in patients with circumscribed biopsy-proven malignant glioma recurrences after standard therapy, if not deemed eligible for safe complete resection. A 3D treatment-planning software was used to determine the number and suitable positions of the cylindrical diffusing fibers placed stereotactically to ensure optimal interstitial irradiation of the target volume. Outcome measurements included the risk profile of the procedure, estimated time-to-treatment-failure (TTF), post-recurrence survival (PRS) and prognostic factors. Forty-seven patients were treated, of which 44 (median age, 49.4 years, range, 33.4-87.0 years, 27 males) could be retrospectively evaluated. Recurrent gliomas included 37 glioblastomas (WHO grade IV) and 7 anaplastic astrocytomas (WHO grade III). Thirty (68.2%) tumors were O-6-methylguanine-DNA methyltransferase (MGMT)-methylated, 29 (65.9%)-isocitrate dehydrogenase (IDH)-wildtype. Twenty-six (59.1%) patients were treated for their first, 9 (20.5%)-for their second, 9 (20.5%)-for the third or further recurrence. The median iPDT target volume was 3.34 cm3 (range, 0.50-22.8 cm3). Severe neurologic deterioration lasted for more than six weeks in one patient only. The median TTF was 7.1 (95% confidence interval (CI), 4.4-9.8) months and the median PRS was 13.0 (95% CI, 9.2-16.8) months. The 2- and 5-year PRS rates were 25.0% and 4.5%, respectively. The treatment response was heterogeneous and not significantly associated with patient characteristics, treatment-related factors or molecular markers. The promising outcome and acceptable risk profile deserve further prospective evaluation particularly to identify mechanisms and prognostic factors of favorable treatment response.
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Müller P, Abdel Gaber SA, Zimmermann W, Wittig R, Stepp H. ABCG2 influence on the efficiency of photodynamic therapy in glioblastoma cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 210:111963. [PMID: 32795847 DOI: 10.1016/j.jphotobiol.2020.111963] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 07/12/2020] [Accepted: 07/14/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Photodynamic therapy with 5-aminolevulinic acid (5-ALA PDT) is a promising novel therapeutic approach in the therapy of malignant brain tumors. 5-ALA occurs as a natural precursor of protoporphyrin IX (PpIX), a tumor-selective photosensitizer. The ATP-binding cassette transporter ABCG2 plays a physiologically significant role in porphyrin efflux from living cells. ABCG2 is also associated with stemness properties. Here we investigate the role of ABCG2 on the susceptibility of glioblastoma cells to 5-ALA PDT. METHODS Accumulation of PpIX in doxycycline-inducible U251MG glioblastoma cells with or without induction of ABCG2 expression or ABCG2 inhibition by KO143 was analyzed using flow cytometry. In U251MG cells, ABCG2 was inducible by doxycycline after stable transfection with a tet-on expression plasmid. U251MG cells with high expression of ABCG2 were enriched and used for further experiments (sU251MG-V). PDT was performed on monolayer cell cultures by irradiation with laser light at 635 nm. RESULTS Elevated levels of ABCG2 in doxycycline induced sU251MG-V cells led to a diminished accumulation of PpIX and higher light doses were needed to reduce cell viability. By inhibiting the ABCG2 transporter with the efficient and non-toxic ABCG2 inhibitor KO143, PpIX accumulation and PDT efficiency could be strongly enhanced. CONCLUSION Glioblastoma cells with high ABCG2 expression accumulate less photosensitizer and require higher light doses to be eliminated. Inhibition of ABCG2 during photosensitizer accumulation and irradiation promises to restore full susceptibility of this crucial tumor cell population to photodynamic treatment.
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Affiliation(s)
- Patricia Müller
- Laser Forschungslabor, LIFE Center, University Hospital, LMU Munich, Fraunhoferstr. 20, 82152 Planegg, Germany; Labor für Tumorimmunologie, LIFE Center, University Hospital, LMU Munich, Fraunhoferstr. 20, 82152, Planegg, Germany.
| | - Sara A Abdel Gaber
- Laser Forschungslabor, LIFE Center, University Hospital, LMU Munich, Fraunhoferstr. 20, 82152 Planegg, Germany; Nanomedicine Department, Institute of Nanoscience and Nanotechnology, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt.
| | - Wolfgang Zimmermann
- Labor für Tumorimmunologie, LIFE Center, University Hospital, LMU Munich, Fraunhoferstr. 20, 82152, Planegg, Germany; Department of Urology, University Hospital, LMU Munich, Fraunhoferstr. 20, 82152 Planegg, Germany
| | - Rainer Wittig
- Institut für Lasertechnologien in der Medizin und Messtechnik an der Universität Ulm, Helmholtzstr. 12, 89081 Ulm, Germany
| | - Herbert Stepp
- Laser Forschungslabor, LIFE Center, University Hospital, LMU Munich, Fraunhoferstr. 20, 82152 Planegg, Germany; Department of Urology, University Hospital, LMU Munich, Fraunhoferstr. 20, 82152 Planegg, Germany
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7
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Ryan AT, Pulukuri AJ, Davaritouchaee M, Abbasi A, Hendricksen AT, Opp LK, Burt AJ, Nielsen AE, Mancini RJ. Comparing the immunogenicity of glycosidase-directed resiquimod prodrugs mediated by cancer cell metabolism. Acta Pharmacol Sin 2020; 41:995-1004. [PMID: 32451412 PMCID: PMC7470892 DOI: 10.1038/s41401-020-0432-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 04/26/2020] [Indexed: 12/16/2022] Open
Abstract
We have recently developed an enzyme-directed immunostimulant (EDI) prodrug motif, which is metabolized to active immunostimulant by cancer cells and, following drug efflux, activates nearby immune cells, resulting in immunogenicity. In this study, we synthesized several EDI prodrugs featuring an imidazoquinoline immunostimulant resiquimod (a Toll-like receptor 7/8 agonist) covalently modified with glycosidase enzyme-directing groups selected from substrates of β-glucuronidase, α-mannosidase, or β-galactosidase. We compared the glycosidase-dependent immunogenicity elicited by each EDI in RAW-Blue macrophages following conversion to active immunostimulant by complementary glycosidase. At a cellular level, we examined EDI metabolism across three cancer cell lines (B16 melanoma, TC2 prostate, and 4T1 breast cancer). Comparing the relative immunogenicity elicited by each EDI/cancer cell combination, we found that B16 cells produced the highest EDI prodrug immunogenicity, achieving >95% of that elicited by unmodified resiquimod, followed by TC2 and 4T1 cells (40% and 30%, respectively). Immunogenicity elicited was comparable for a given cell type and independent of the glycosidase substrate in the EDIs or differences in functional glycosidase activity between cell lines. Measuring drug efflux of the immunostimulant payload and efflux protein expression revealed that EDI/cancer cell-mediated immunogenicity was governed by efflux potential of the cancer cells. We determined that, following EDI conversion, immunostimulant efflux occurred through both P-glycoprotein-dependent and P-glycoprotein-independent transport mechanisms. Overall, this study highlights the broad ability of EDIs to couple immunogenicity to the metabolism of many cancers that exhibit drug efflux and suggests that designing future generations of EDIs with immunostimulant payloads that are optimized for drug efflux could be particularly beneficial.
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Mi Y, Guo N, Luan J, Cheng J, Hu Z, Jiang P, Jin W, Gao X. The Emerging Role of Myeloid-Derived Suppressor Cells in the Glioma Immune Suppressive Microenvironment. Front Immunol 2020; 11:737. [PMID: 32391020 PMCID: PMC7193311 DOI: 10.3389/fimmu.2020.00737] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 03/31/2020] [Indexed: 12/16/2022] Open
Abstract
Myeloid-derived suppressor cells (MDSCs) are a heterogeneous group of myeloid progenitor and precursor cells at different stages of differentiation, which play an important role in tumor immunosuppression. Glioma is the most common and deadliest primary malignant tumor of the brain, and ample evidence supports key contributions of MDSCs to the immunosuppressive tumor microenvironment, which is a key factor stimulating glioma progression. In this review, we summarize the source and characterization of MDSCs, discuss their immunosuppressive functions, and current approaches that target MDSCs for tumor control. Overall, the review provides insights into the roles of MDSC immunosuppression in the glioma microenvironment and suggests that MDSC control is a powerful cellular therapeutic target for currently incurable glioma tumors.
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Affiliation(s)
- Yajing Mi
- Shaanxi Key Laboratory of Brain Disorders, Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, China
| | - Na Guo
- Shaanxi Key Laboratory of Brain Disorders, Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, China
| | - Jing Luan
- Shaanxi Key Laboratory of Brain Disorders, Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, China
| | - Jianghong Cheng
- Shaanxi Key Laboratory of Brain Disorders, Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, China
| | - Zhifang Hu
- Shaanxi Key Laboratory of Brain Disorders, Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, China
| | - Pengtao Jiang
- Shaanxi Key Laboratory of Brain Disorders, Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, China
| | - Weilin Jin
- Shaanxi Key Laboratory of Brain Disorders, Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, China.,Key Lab for Thin Film and Microfabrication Technology, Department of Instrument Science and Engineering, School of Electronic Information and Electronic Engineering, Institute of Nano Biomedicine and Engineering, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Xingchun Gao
- Shaanxi Key Laboratory of Brain Disorders, Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, China.,Key Lab for Thin Film and Microfabrication Technology, Department of Instrument Science and Engineering, School of Electronic Information and Electronic Engineering, Institute of Nano Biomedicine and Engineering, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
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9
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Anbil S, Pigula M, Huang HC, Mallidi S, Broekgaarden M, Baglo Y, De Silva P, Simeone DM, Mino-Kenudson M, Maytin EV, Rizvi I, Hasan T. Vitamin D Receptor Activation and Photodynamic Priming Enables Durable Low-dose Chemotherapy. Mol Cancer Ther 2020; 19:1308-1319. [PMID: 32220968 DOI: 10.1158/1535-7163.mct-19-0791] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 12/08/2019] [Accepted: 03/12/2020] [Indexed: 12/18/2022]
Abstract
Patients with cancer often confront the decision of whether to continue high-dose chemotherapy at the expense of cumulative toxicities. Reducing the dose of chemotherapy regimens while preserving efficacy is sorely needed to preserve the performance status of these vulnerable patients, yet has not been prioritized. Here, we introduce a dual pronged approach to modulate the microenvironment of desmoplastic pancreatic tumors and enable significant dose deescalation of the FDA-approved chemotherapeutic nanoliposomal irinotecan (nal-IRI) without compromising tumor control. We demonstrate that light-based photodynamic priming (PDP) coupled with vitamin D3 receptor (VDR) activation within fibroblasts increases intratumoral nal-IRI accumulation and suppresses protumorigenic CXCL12/CXCR7 crosstalk. Combined photodynamic and biochemical modulation of the tumor microenvironment enables a 75% dose reduction of nal-IRI while maintaining treatment efficacy, resulting in improved tolerability. Modifying the disease landscape to increase the susceptibility of cancer, via preferentially modulating fibroblasts, represents a promising and relatively underexplored strategy to enable dose deescalation. The approach presented here, using a combination of three clinically available therapies with nonoverlapping toxicities, can be rapidly translated with minimal modification to treatment workflow, and challenges the notion that significant improvements in chemotherapy efficacy can only be achieved at the expense of increased toxicity.
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Affiliation(s)
- Sriram Anbil
- Long School of Medicine, UT Health San Antonio, San Antonio, Texas.,Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Michael Pigula
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Huang-Chiao Huang
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Srivalleesha Mallidi
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Mans Broekgaarden
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Yan Baglo
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Pushpamali De Silva
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Diane M Simeone
- Department of Surgery, Langone School of Medicine, New York University, New York, New York
| | - Mari Mino-Kenudson
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Edward V Maytin
- Department of Dermatology and Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio
| | - Imran Rizvi
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Tayyaba Hasan
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts. .,Division of Health Sciences and Technology, Harvard University and Massachusetts Institute of Technology, Cambridge, MA
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10
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Using Light for Therapy of Glioblastoma Multiforme (GBM). Brain Sci 2020; 10:brainsci10020075. [PMID: 32024010 PMCID: PMC7071600 DOI: 10.3390/brainsci10020075] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/16/2020] [Accepted: 01/27/2020] [Indexed: 12/22/2022] Open
Abstract
: Glioblastoma multiforme (GBM) is the most malignant form of primary brain tumour with extremely poor prognosis. The current standard of care for newly diagnosed GBM includes maximal surgical resection followed by radiotherapy and adjuvant chemotherapy. The introduction of this protocol has improved overall survival, however recurrence is essentially inevitable. The key reason for that is that the surgical treatment fails to eradicate GBM cells completely, and adjacent parenchyma remains infiltrated by scattered GBM cells which become the source of recurrence. This stimulates interest to any supplementary methods which could help to destroy residual GBM cells and fight the infiltration. Photodynamic therapy (PDT) relies on photo-toxic effects induced by specific molecules (photosensitisers) upon absorption of photons from a light source. Such toxic effects are not specific to a particular molecular fingerprint of GBM, but rather depend on selective accumulation of the photosensitiser inside tumour cells or, perhaps their greater sensitivity to the effects, triggered by light. This gives hope that it might be possible to preferentially damage infiltrating GBM cells within the areas which cannot be surgically removed and further improve the chances of survival if an efficient photosensitiser and hardware for light delivery into the brain tissue are developed. So far, clinical trials with PDT were performed with one specific type of photosensitiser, protoporphyrin IX, which tends to accumulate in the cytoplasm of the GBM cells. In this review we discuss the idea that other types of molecules which build up in mitochondria could be explored as photosensitisers and used for PDT of these aggressive brain tumours.
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11
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Preclinical and Clinical Evidence of Immune Responses Triggered in Oncologic Photodynamic Therapy: Clinical Recommendations. J Clin Med 2020; 9:jcm9020333. [PMID: 31991650 PMCID: PMC7074240 DOI: 10.3390/jcm9020333] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 01/17/2020] [Accepted: 01/21/2020] [Indexed: 12/12/2022] Open
Abstract
Photodynamic therapy (PDT) is an anticancer strategy utilizing light-mediated activation of a photosensitizer (PS) which has accumulated in tumor and/or surrounding vasculature. Upon activation, the PS mediates tumor destruction through the generation of reactive oxygen species and tumor-associated vasculature damage, generally resulting in high tumor cure rates. In addition, a PDT-induced immune response against the tumor has been documented in several studies. However, some contradictory results have been reported as well. With the aim of improving the understanding and awareness of the immunological events triggered by PDT, this review focuses on the immunological effects post-PDT, described in preclinical and clinical studies. The reviewed preclinical evidence indicates that PDT is able to elicit a local inflammatory response in the treated site, which can develop into systemic antitumor immunity, providing long-term tumor growth control. Nevertheless, this aspect of PDT has barely been explored in clinical studies. It is clear that further understanding of these events can impact the design of more potent PDT treatments. Based on the available preclinical knowledge, recommendations are given to guide future clinical research to gain valuable information on the immune response induced by PDT. Such insights directly obtained from cancer patients can only improve the success of PDT treatment, either alone or in combination with immunomodulatory approaches.
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Shi L, Buchner A, Pohla H, Pongratz T, Rühm A, Zimmermann W, Gederaas OA, Zhang L, Wang X, Stepp H, Sroka R. Methadone enhances the effectiveness of 5-aminolevulinic acid-based photodynamic therapy for squamous cell carcinoma and glioblastoma in vitro. JOURNAL OF BIOPHOTONICS 2019; 12:e201800468. [PMID: 31140754 DOI: 10.1002/jbio.201800468] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 05/11/2019] [Accepted: 05/27/2019] [Indexed: 06/09/2023]
Abstract
Although having shown promising clinical outcomes, the effectiveness of 5-aminolevulinic acid-based photodynamic therapy (ALA-PDT) for squamous cell carcinoma (SCC) and glioblastoma remains to be improved. The analgesic drug methadone is able to sensitize various tumors to chemotherapy. In this in vitro study, the influence of methadone to the effectiveness of ALA-PDT for SCC (FADU) and glioblastoma (A172) was investigated on the protoporphyrin IX (PpIX) fluorescence, survival rates, apoptosis, and cell cycle phase, each with or without the presence of methadone. The production of PpIX was increased by methadone in FADU cells while it was decreased in A172 cells. The survival rates of both cell lines treated by ALA-PDT were significantly reduced by the combination with methadone (P < .05). Methadone also significantly increased the percentage of apoptotic cells and improved the effect of ALA-PDT on the cell cycle phase arrest in the G0/G1 phase (P < .05). This study demonstrates the potential of methadone to influence the cytotoxic effect of ALA-PDT for both SCC and glioblastoma cell lines.
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Affiliation(s)
- Lei Shi
- Laser-Forschungslabor, LIFE Center, University Hospital, LMU Munich, Munich, Germany
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Alexander Buchner
- Labor für Tumorimmunologie, LIFE Center, University Hospital, LMU Munich, Munich, Germany
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Heike Pohla
- Labor für Tumorimmunologie, LIFE Center, University Hospital, LMU Munich, Munich, Germany
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Thomas Pongratz
- Laser-Forschungslabor, LIFE Center, University Hospital, LMU Munich, Munich, Germany
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Adrian Rühm
- Laser-Forschungslabor, LIFE Center, University Hospital, LMU Munich, Munich, Germany
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Wolfgang Zimmermann
- Labor für Tumorimmunologie, LIFE Center, University Hospital, LMU Munich, Munich, Germany
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Odrun A Gederaas
- Department of Chemistry, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
- Odrun Arna Gederaas, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
| | - Linglin Zhang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Xiuli Wang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Herbert Stepp
- Laser-Forschungslabor, LIFE Center, University Hospital, LMU Munich, Munich, Germany
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Ronald Sroka
- Laser-Forschungslabor, LIFE Center, University Hospital, LMU Munich, Munich, Germany
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
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Shibata S, Shinozaki N, Suganami A, Ikegami S, Kinoshita Y, Hasegawa R, Kentaro H, Okamoto Y, Aoki I, Tamura Y, Iwadate Y. Photo-immune therapy with liposomally formulated phospholipid-conjugated indocyanine green induces specific antitumor responses with heat shock protein-70 expression in a glioblastoma model. Oncotarget 2019; 10:175-183. [PMID: 30719212 PMCID: PMC6349435 DOI: 10.18632/oncotarget.26544] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 11/26/2018] [Indexed: 11/25/2022] Open
Abstract
Glioblastoma (GBM) is the most common malignant brain tumor, and infiltrates into the surrounding normal brain tissue. Induction of a tumor-specific immune response is one of the best methods to obtain tumor-specific cytotoxicity. Photodynamic therapy (PDT) is known to effectively induce an antitumor immune response. We have developed a clinically translatable nanoparticle, liposomally formulated phospholipid-conjugated indocyanine green (LP-iDOPE), applicable for PDT. This nanoparticle accumulates in tumor tissues by the enhanced permeability and retention effect, and releases heat and singlet oxygen to injure cancer cells when activated by near infrared (NIR) light. We assessed the effectiveness of the LP-iDOPE system in brain using the rat 9L glioblastoma model. Treatment with LP-iDOPE and NIR irradiation resulted in significant tumor growth suppression and prolongation of survival. Histopathological examination showed induction of both apoptosis and necrosis and accumulation of CD8+ T-cells and macrophages/microglia accompanied by marked expressions of heat shock protein-70 (HSP70), which was not induced by mild hyperthermia alone at 45° C or an interleukin-2-mediated immune reaction. Notably, the efficacy was lost in immunocompromised nude rats. These results collectively show that the novel nanoparticle LP-iDOPE in combination with NIR irradiation can efficiently induce a tumor-specific immune reaction for malignant gliomas possibly by inducing HSP70 expression which is known to activate antigen-presenting cells through toll-like receptor signaling.
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Affiliation(s)
- Sayaka Shibata
- National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan.,Department of Neurological Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Natsuki Shinozaki
- Department of Neurological Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Akiko Suganami
- Department of Bioinformatics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Shiro Ikegami
- Department of Neurological Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yuki Kinoshita
- Department of Neurological Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | | | | | - Yoshiharu Okamoto
- Department of Veterinary Clinical Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Ichio Aoki
- National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan
| | - Yutaka Tamura
- Department of Bioinformatics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yasuo Iwadate
- Department of Neurological Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
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14
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Stepp H, Stummer W. 5‐ALA in the management of malignant glioma. Lasers Surg Med 2018; 50:399-419. [DOI: 10.1002/lsm.22933] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/06/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Herbert Stepp
- LIFE Center and Department of UrologyUniversity Hospital of MunichFeodor‐Lynen‐Str. 1981377MunichGermany
| | - Walter Stummer
- Department of NeurosurgeryUniversity Clinic MünsterAlbert‐Schweitzer‐Campus 1, Gebäude A148149MünsterGermany
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15
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Ahn SH, Ahn JH, Ryu DR, Lee J, Cho MS, Choi YH. Effect of Necrosis on the miRNA-mRNA Regulatory Network in CRT-MG Human Astroglioma Cells. Cancer Res Treat 2017; 50:382-397. [PMID: 28546527 PMCID: PMC5912152 DOI: 10.4143/crt.2016.551] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 04/25/2017] [Indexed: 12/14/2022] Open
Abstract
Purpose Glioblastoma multiforme (GBM) is the most common adult primary intracranial tumor. The remarkable features of GBM include central necrosis. MicroRNAs (miRNAs) have been considered as diagnostic/prognostic biomarkers for many cancers, including glioblastoma. However, the effect of necrosis on the miRNA expression profile and predicted miRNA-mRNA regulatory information remain unclear. The purpose of this study is to examine the effect of necrotic cells on the modulation of miRNA and mRNA expression profiles and miRNA-mRNA network in CRT-MG cells. Materials and Methods We used human astroglioma cells, CRT-MG, treated with necrotic CRT-MG cells to examine the effect of necrosis on the modulation of miRNA and mRNA by next-generation sequencing. For preparation of necrotic cells, CRT-MGcellswere frozen and thawed through cycle of liquid nitrogen–water bath. The putative miRNA-mRNA regulatory relationshipwas inferred through target information, using miRDB. Results The necrotic cells induced dysregulation of 106 miRNAs and 887 mRNAs. Among them, 11 miRNAs that had a negative correlation value of p < 0.05 by the hypergeometric test were screened, and their target mRNAs were analyzed by Gene Ontology enrichment analysis. Using the Kyoto Encyclopedia of Genes and Genomes database, we also found several necrotic cell treatment-activated pathways that were modulated by relevant gene targets of differentially expressed miRNAs. Conclusion Our result demonstrated that dysregulation of miRNA and mRNA expression profiles occurs when GBM cells are exposed to necrotic cells, suggesting that several miRNAs may have the potential to be used as biomarkers for predicting GBM progression and pathogenesis.
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Affiliation(s)
- So-Hee Ahn
- Department of Physiology, Ewha Womans University School of Medicine,Seoul, Korea.,Tissue Injury Defense Research Center, Ewha Womans University School of Medicine,Seoul, Korea
| | - Jung-Hyuck Ahn
- Tissue Injury Defense Research Center, Ewha Womans University School of Medicine,Seoul, Korea.,Department of Biochemistry, Ewha Womans University School of Medicine,Seoul, Korea
| | - Dong-Ryeol Ryu
- Tissue Injury Defense Research Center, Ewha Womans University School of Medicine,Seoul, Korea.,Department of Internal medicine, Ewha Womans University School of Medicine,Seoul, Korea
| | - Jisoo Lee
- Department of Internal medicine, Ewha Womans University School of Medicine,Seoul, Korea
| | - Min-Sun Cho
- Department of Pathology, Ewha Womans University School of Medicine,Seoul, Korea
| | - Youn-Hee Choi
- Department of Physiology, Ewha Womans University School of Medicine,Seoul, Korea.,Tissue Injury Defense Research Center, Ewha Womans University School of Medicine,Seoul, Korea
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17
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Liu J, Jiang G, Yang A, Yang G, Yang W, Fang Y. Molecular mechanism of prostate cancer cell apoptosis induced by busulfan via adjustment of androgen receptor phosphatization. Am J Transl Res 2016; 8:4881-4891. [PMID: 27904688 PMCID: PMC5126330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 02/29/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To probe killing effect of busulfan to prostate cancer cell without androgen and the influence of androgen receptor phosphatization and analyze its molecular mechanism. METHODS prostate cancer cell line 22RV1, LAPC4 and LNCaP treated with busulfan under androgen-free condition underwent CCK-8 examination to probe killing ability of the medicine. Flow cytometry was used to check the influence of busulfan on apoptosis rate of prostate cancer cell line LAPC4. Expression level of androgen receptor (AR), Src and Ack1 and change in phosphatization of AR after busulfan treatment were measured by RT-PCR and Western blotting. Finally, influence o proliferation ability and apoptosis of LAPC4 were measured using EGF-busulfan co-processing. RESULTS Significant dose-dependency was observed as killing ability rises with higher busulfan concentration (p<0.05). Significant improvement in prostate cancer cell inhibition ability of busulfan was also observed with prolonging of time (p<0.05). Then we discovered, as indicated by flow cytometry, that busulfan inhibits prostate cancer cell LAPC4 proliferation by strengthening its apoptosis (p<0.05), which showed significant dose- and time-dependency. Detection of AR expression and phosphatization level showed no significant influence on mRNA and protein expression level of AR made by busulfan. However, decline of phosphatization level at AR Y534 site was positively related to busulfan treatment time. Busulfan was found to be inhibitory to Src kinase induced by EGF and level of resulting AR phosphatization in our further probe into the mechanism of busulfan influence on phosphatization level at AR Y534 site. Nude mice experiment indicated that busulfan was inhibitory to protein expression of AR downstream target gene prostate specific antigen (PSA) and human tissue kallikrein2 (hk-2), thus inhibited in vivo tumorigenic ability of prostate cancer cells. CONCLUSION Busulfan was significantly inhibitory to prostate cancer cell proliferation by inhibiting phosphatization of Src kinase at AR Y534 site.
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Affiliation(s)
- Jun Liu
- Department of Clinical Laboratory, Zhejiang Xiaoshan HospitalHangzhou, Zhejiang 311201, China
| | - Guojun Jiang
- Department of Pharmacy, Zhejiang Xiaoshan HospitalHangzhou, Zhejiang 311201, China
| | - Aiping Yang
- Department of Clinical Laboratory, Zhejiang Xiaoshan HospitalHangzhou, Zhejiang 311201, China
| | - Guohui Yang
- Department of Clinical Laboratory, Zhejiang Xiaoshan HospitalHangzhou, Zhejiang 311201, China
| | - Wenjuan Yang
- Department of Clinical Laboratory, Zhejiang Xiaoshan HospitalHangzhou, Zhejiang 311201, China
| | - Yi Fang
- Department of Urology, Zhejiang Xiaoshan HospitalHangzhou, Zhejiang 311201, China
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18
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Pogue BW, Elliott JT, Kanick SC, Davis SC, Samkoe KS, Maytin EV, Pereira SP, Hasan T. Revisiting photodynamic therapy dosimetry: reductionist & surrogate approaches to facilitate clinical success. Phys Med Biol 2016; 61:R57-89. [PMID: 26961864 DOI: 10.1088/0031-9155/61/7/r57] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Photodynamic therapy (PDT) can be a highly complex treatment, with many parameters influencing treatment efficacy. The extent to which dosimetry is used to monitor and standardize treatment delivery varies widely, ranging from measurement of a single surrogate marker to comprehensive approaches that aim to measure or estimate as many relevant parameters as possible. Today, most clinical PDT treatments are still administered with little more than application of a prescribed drug dose and timed light delivery, and thus the role of patient-specific dosimetry has not reached widespread clinical adoption. This disconnect is at least partly due to the inherent conflict between the need to measure and understand multiple parameters in vivo in order to optimize treatment, and the need for expedience in the clinic and in the regulatory and commercialization process. Thus, a methodical approach to selecting primary dosimetry metrics is required at each stage of translation of a treatment procedure, moving from complex measurements to understand PDT mechanisms in pre-clinical and early phase I trials, towards the identification and application of essential dose-limiting and/or surrogate measurements in phase II/III trials. If successful, identifying the essential and/or reliable surrogate dosimetry measurements should help facilitate increased adoption of clinical PDT. In this paper, examples of essential dosimetry points and surrogate dosimetry tools that may be implemented in phase II/III trials are discussed. For example, the treatment efficacy as limited by light penetration in interstitial PDT may be predicted by the amount of contrast uptake in CT, and so this could be utilized as a surrogate dosimetry measurement to prescribe light doses based upon pre-treatment contrast. Success of clinical ALA-based skin lesion treatment is predicted almost uniquely by the explicit or implicit measurements of photosensitizer and photobleaching, yet the individualization of treatment based upon each patients measured bleaching needs to be attempted. In the case of ALA, lack of PpIX is more likely an indicator that alternative PpIX production methods must be implemented. Parsimonious dosimetry, using surrogate measurements that are clinically acceptable, might strategically help to advance PDT in a medical world that is increasingly cost and time sensitive. Careful attention to methodologies that can identify and advance the most critical dosimetric measurements, either direct or surrogate, are needed to ensure successful incorporation of PDT into niche clinical procedures.
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Affiliation(s)
- Brian W Pogue
- Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA. Department of Surgery, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
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19
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Weijer R, Broekgaarden M, van Golen RF, Bulle E, Nieuwenhuis E, Jongejan A, Moerland PD, van Kampen AHC, van Gulik TM, Heger M. Low-power photodynamic therapy induces survival signaling in perihilar cholangiocarcinoma cells. BMC Cancer 2015; 15:1014. [PMID: 26705830 PMCID: PMC4691291 DOI: 10.1186/s12885-015-1994-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 12/11/2015] [Indexed: 12/21/2022] Open
Abstract
Background Photodynamic therapy (PDT) of solid cancers comprises the administration of a photosensitizer followed by illumination of the photosensitizer-replete tumor with laser light. This induces a state of local oxidative stress, culminating in the destruction of tumor tissue and microvasculature and induction of an anti-tumor immune response. However, some tumor types, including perihilar cholangiocarcinoma, are relatively refractory to PDT, which may be attributable to the activation of survival pathways in tumor cells following PDT (i.e., activator protein 1 (AP-1)-, nuclear factor of kappa light polypeptide gene enhancer in B-cells (NF-κB)-, hypoxia-inducible factor 1-alpha (HIF-1α)-, nuclear factor (erythroid-derived 2)-like 2 (NFE2L2)-, and unfolded protein response-mediated pathways). Methods To assess the activation of survival pathways after PDT, human perihilar cholangiocarcinoma (SK-ChA-1) cells were subjected to PDT with zinc phthalocyanine (ZnPC)-encapsulating liposomes. Following 30-minute incubation with liposomes, the cells were either left untreated or treated at low (50 mW) or high (500 mW) laser power (cumulative light dose of 15 J/cm2). Cells were harvested 90 min post-PDT and whole genome expression analysis was performed using Illumina HumanHT-12 v4 expression beadchips. The data were interpreted in the context of the survival pathways. In addition, the safety of ZnPC-encapsulating liposomes was tested both in vitro and in vivo. Results PDT-treated SK-ChA-1 cells exhibited activation of the hypoxia-induced stress response via HIF-1α and initiation of the pro-inflammatory response via NF-кB. PDT at low laser power in particular caused extensive survival signaling, as evidenced by the significant upregulation of HIF-1- (P < 0.001) and NF-кB-related (P < 0.001) genes. Low-power PDT was less lethal to SK-ChA-1 cells 90 min post-PDT, confirmed by annexin V/propidium iodide staining. In vitro toxicogenomics and toxicological testing in chicken embryos and mice revealed that the ZnPC-encapsulating liposomes are non-toxic. Conclusions PDT-treated perihilar cholangiocarcinoma cells exhibit extensive survival signaling that may translate to a suboptimal therapeutic response and possibly tumor recurrence. These findings encourage the development of photosensitizer delivery systems with co-encapsulated inhibitors of survival pathways. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-1994-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ruud Weijer
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105, AZ, Amsterdam, The Netherlands.
| | - Mans Broekgaarden
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105, AZ, Amsterdam, The Netherlands.
| | - Rowan F van Golen
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105, AZ, Amsterdam, The Netherlands.
| | - Esther Bulle
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105, AZ, Amsterdam, The Netherlands.
| | - Esther Nieuwenhuis
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105, AZ, Amsterdam, The Netherlands.
| | - Aldo Jongejan
- Bioinformatics Laboratory, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105, AZ, Amsterdam, The Netherlands.
| | - Perry D Moerland
- Bioinformatics Laboratory, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105, AZ, Amsterdam, The Netherlands.
| | - Antoine H C van Kampen
- Bioinformatics Laboratory, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105, AZ, Amsterdam, The Netherlands.
| | - Thomas M van Gulik
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105, AZ, Amsterdam, The Netherlands.
| | - Michal Heger
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105, AZ, Amsterdam, The Netherlands.
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Abstract
Photodynamic therapy (PDT) combines visible light and photosensitizing dyes. Different animal models have been used to test PDT for cancer, infectious disease and cardiovascular disease. Mouse models of tumours include subcutaneous, orthotopic, syngeneic, xenograft, autochthonous and genetically modified. Photodynamic therapy (PDT) employs non-toxic dyes called photosensitizers (PSs), which absorb visible light to give the excited singlet state, followed by the long-lived triplet state that can undergo photochemistry. In the presence of ambient oxygen, reactive oxygen species (ROS), such as singlet oxygen and hydroxyl radicals are formed that are able to kill cancer cells, inactivate microbial pathogens and destroy unwanted tissue. Although there are already several clinically approved PSs for various disease indications, many studies around the world are using animal models to investigate the further utility of PDT. The present review will cover the main groups of animal models that have been described in the literature. Cancer comprises the single biggest group of models including syngeneic mouse/rat tumours that can either be subcutaneous or orthotopic and allow the study of anti-tumour immune response; human tumours that need to be implanted in immunosuppressed hosts; carcinogen-induced tumours; and mice that have been genetically engineered to develop cancer (often by pathways similar to those in patients). Infections are the second biggest class of animal models and the anatomical sites include wounds, burns, oral cavity, ears, eyes, nose etc. Responsible pathogens can include Gram-positive and Gram-negative bacteria, fungi, viruses and parasites. A smaller and diverse group of miscellaneous animal models have been reported that allow PDT to be tested in ophthalmology, atherosclerosis, atrial fibrillation, dermatology and wound healing. Successful studies using animal models of PDT are blazing the trail for tomorrow's clinical approvals.
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Siu A, Volotskova O, Cheng X, Khalsa SS, Bian K, Murad F, Keidar M, Sherman JH. Differential Effects of Cold Atmospheric Plasma in the Treatment of Malignant Glioma. PLoS One 2015; 10:e0126313. [PMID: 26083405 PMCID: PMC4471333 DOI: 10.1371/journal.pone.0126313] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 03/31/2015] [Indexed: 11/19/2022] Open
Abstract
Objective Cold atmospheric plasma (CAP) has recently been shown to selectively target cancer cells with minimal effects on normal cells. We systematically assessed the effects of CAP in the treatment of glioblastoma. Methods Three glioma cell lines, normal astrocytes, and endothelial cell lines were treated with CAP. The effects of CAP were then characterized for viability, cytotoxicity/apoptosis, and cell cycle effects. Statistical significance was determined with student's t-test. Results CAP treatment decreases viability of glioma cells in a dose dependent manner, with the ID50 between 90-120 seconds for all glioma cell lines. Treatment with CAP for more than 120 seconds resulted in viability less than 35% at 24-hours posttreatment, with a steady decline to less than 20% at 72-hours. In contrast, the effect of CAP on the viability of NHA and HUVEC was minimal, and importantly not significant at 90 to 120 seconds, with up to 85% of the cells remained viable at 72-hours post-treatment. CAP treatment produces both cytotoxic and apoptotic effects with some variability between cell lines. CAP treatment resulted in a G2/M-phase cell cycle pause in all three cell lines. Conclusions This preliminary study determined a multi-focal effect of CAP on glioma cells in vitro, which was not observed in the non-tumor cell lines. The decreased viability depended on the treatment duration and cell line, but overall was explained by the induction of cytotoxicity, apoptosis, and G2/M pause. Future studies will aim at further characterization with more complex pre-clinical models.
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Affiliation(s)
- Alan Siu
- Department of Neurological Surgery, George Washington University, Washington, DC, United States of America
| | - Olga Volotskova
- Department of Mechanical and Aerospace Engineering, George Washington University, Washington, DC, United States of America
| | - Xiaoqian Cheng
- Department of Mechanical and Aerospace Engineering, George Washington University, Washington, DC, United States of America
| | - Siri S. Khalsa
- George Washington University School of Medicine and Health Sciences, Washington, DC, United States of America
| | - Ka Bian
- Department of Biochemistry and Molecular Biology, George Washington University, School of Medicine, Washington, DC, United States of America
| | - Ferid Murad
- Department of Biochemistry and Molecular Biology, George Washington University, School of Medicine, Washington, DC, United States of America
| | - Michael Keidar
- Department of Mechanical and Aerospace Engineering, George Washington University, Washington, DC, United States of America
| | - Jonathan H. Sherman
- Department of Neurological Surgery, George Washington University, Washington, DC, United States of America
- * E-mail:
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Sharabi S, Last D, Guez D, Daniels D, Hjouj MI, Salomon S, Maor E, Mardor Y. Dynamic effects of point source electroporation on the rat brain tissue. Bioelectrochemistry 2014; 99:30-9. [PMID: 24976141 DOI: 10.1016/j.bioelechem.2014.06.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 04/22/2014] [Accepted: 06/08/2014] [Indexed: 12/18/2022]
Abstract
In spite of aggressive therapy, existing treatments offer poor prognosis for glioblastoma multiforme due to tumor infiltration into the surrounding brain as well as poor blood-brain barrier penetration of most therapeutic agents. In this paper we present a novel approach for a minimally invasive treatment and a non-invasive response assessment methodology consisting of applying intracranial point-source electroporation and assessing treatment effect volumes using magnetic resonance imaging. Using a unique setup of a single intracranial electrode and an external surface electrode we treated rats' brains with various electroporation protocols and applied magnetic resonance imaging to study the dependence of the physiological effects on electroporation treatment parameters. The extent of blood-brain barrier disruption and later volumes of permanent brain tissue damage were found to correlate significantly with the treatment voltages (r(2)=0.99, p<0.001) and the number of treatment pulses (r(2)=0.94, p<0.002). Blood-brain barrier disruption depicted 3.2±0.3 times larger volumes than the final permanent damage volumes (p<0.0001). These results indicate that it may be beneficial to use more than one modality of electroporation when planning a treatment for brain tumors.
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Affiliation(s)
- Shirley Sharabi
- The Advanced Technology Center, Sheba Medical Center, Ramat-Gan 52621, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - David Last
- The Advanced Technology Center, Sheba Medical Center, Ramat-Gan 52621, Israel
| | - David Guez
- The Advanced Technology Center, Sheba Medical Center, Ramat-Gan 52621, Israel
| | - Dianne Daniels
- The Advanced Technology Center, Sheba Medical Center, Ramat-Gan 52621, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Mohammad Ibrahim Hjouj
- Center for Bioengineering in the Service of Humanity and Society, School of Computer Science and Engineering, Hebrew University, Jerusalem, Israel; The Medical Imaging Department, Al Quds University, Abu Dis Jerusalem, Israel
| | - Sharona Salomon
- The Advanced Technology Center, Sheba Medical Center, Ramat-Gan 52621, Israel
| | - Elad Maor
- Leviev Heart Center, Sheba Medical Center, Ramat-Gan 52621, Israel; Pinchas Borenstein Talpiot Medical Leadership Program, Sheba Medical Center, Ramat-Gan 52621, Israel
| | - Yael Mardor
- The Advanced Technology Center, Sheba Medical Center, Ramat-Gan 52621, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
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Larisch P, Verwanger T, Linecker M, Krammer B. The interrelation between a pro-inflammatory milieu and fluorescence diagnosis or photodynamic therapy of human skin cell lines. Photodiagnosis Photodyn Ther 2014; 11:91-103. [DOI: 10.1016/j.pdpdt.2014.01.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 01/13/2014] [Accepted: 01/16/2014] [Indexed: 01/03/2023]
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Cornelius JF, Slotty PJ, El Khatib M, Giannakis A, Senger B, Steiger HJ. Enhancing the effect of 5-aminolevulinic acid based photodynamic therapy in human meningioma cells. Photodiagnosis Photodyn Ther 2014; 11:1-6. [DOI: 10.1016/j.pdpdt.2014.01.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 01/09/2014] [Accepted: 01/13/2014] [Indexed: 12/11/2022]
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Infanger DW, Cho Y, Lopez BS, Mohanan S, Liu SC, Gursel D, Boockvar JA, Fischbach C. Glioblastoma stem cells are regulated by interleukin-8 signaling in a tumoral perivascular niche. Cancer Res 2013; 73:7079-89. [PMID: 24121485 DOI: 10.1158/0008-5472.can-13-1355] [Citation(s) in RCA: 136] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Glioblastoma multiforme contains a subpopulation of cancer stem-like cells (CSC) believed to underlie tumorigenesis and therapeutic resistance. Recent studies have localized CSCs in this disease adjacent to endothelial cells (EC) in what has been termed a perivascular niche, spurring investigation into the role of EC-CSC interactions in glioblastoma multiforme pathobiology. However, these studies have been limited by a lack of in vitro models of three-dimensional disease that can recapitulate the relevant conditions of the niche. In this study, we engineered a scaffold-based culture system enabling brain endothelial cells to form vascular networks. Using this system, we showed that vascular assembly induces CSC maintenance and growth in vitro and accelerates tumor growth in vivo through paracrine interleukin (IL)-8 signaling. Relative to conventional monolayers, endothelial cells cultured in this three-dimensional system not only secreted enhanced levels of IL-8 but also induced CSCs to upregulate the IL-8 cognate receptors CXCR1 and CXCR2, which collectively enhanced CSC migration, growth, and stemness properties. CXCR2 silencing in CSCs abolished the tumor-promoting effects of endothelial cells in vivo, confirming a critical role for this signaling pathway in GMB pathogenesis. Together, our results reveal synergistic interactions between endothelial cells and CSCs that promote the malignant properties of CSCs in an IL-8-dependent manner. Furthermore, our findings underscore the relevance of tissue-engineered cell culture platforms to fully analyze signaling mechanisms in the tumor microenvironment.
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Affiliation(s)
- David W Infanger
- Authors' Affiliations: Departments of Biomedical Engineering and Comparative Biomedical Sciences, Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, New York; Department of Veterinary Medicine, Colorado State University, Fort Collins, Colorado; and Laboratory for Translational Stem Cell Research, Weill Cornell Brain Tumor Center, Department of Neurological Surgery, Weill Cornell Medical College, New York
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Gil-Araujo B, Toledo Lobo MV, Gutiérrez-Salmerón M, Gutiérrez-Pitalúa J, Ropero S, Angulo JC, Chiloeches A, Lasa M. Dual specificity phosphatase 1 expression inversely correlates with NF-κB activity and expression in prostate cancer and promotes apoptosis through a p38 MAPK dependent mechanism. Mol Oncol 2013; 8:27-38. [PMID: 24080497 DOI: 10.1016/j.molonc.2013.08.012] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 08/28/2013] [Accepted: 08/29/2013] [Indexed: 12/13/2022] Open
Abstract
Dual specificity phosphatase 1 (DUSP1) and the transcription factor NF-κB are implicated in prostate cancer since their expression levels are altered along this disease, although there are no evidences up to date demonstrating a crosstalk between them. In this report, we show for the first time that DUSP1 over-expression in DU145 cells promotes apoptosis and decreases NF-κB activity by blocking p65/NF-κB nuclear translocation. Moreover, although DUSP1 impairs TNF-α-induced p38 MAPK and JNK activation, only the specific inhibition of p38 MAPK exerts the same effects than DUSP1 over-expression on both apoptosis and NF-κB activity. Consistently, DUSP1 promotes apoptosis and decreases NF-κB activity in cells in which p38 MAPK is induced by TNF-α treatment. These results demonstrate that p38 MAPK is specifically involved in DUSP1-mediated effects on both apoptosis and NF-κB activity. Interestingly, we show an inverse correlation between DUSP1 expression and activation of both p65/NF-κB and p38 MAPK in human prostate tissue specimens. Thus, most of apparently normal glands, benign prostatic hyperplasia and low-grade prostatic intraepithelial neoplasia samples show high DUSP1 expression and low levels of both nuclear p65/NF-κB and activated p38 MAPK. By contrast, DUSP1 expression levels are low or even absent in high-grade prostatic intraepithelial neoplasia and prostatic adenocarcinoma samples, whereas nuclear p65/NF-κB and activated p38 MAPK are highly expressed in the same samples. Overall, our results provide evidence for a role of DUSP1 in the apoptosis of prostate cancer cells, through a mechanism involving the inhibition of p38 MAPK and NF-κB. Furthermore, our findings suggest that the ratio between DUSP1 and p65/NF-κB expression levels, rather than the individual expression of both molecules, is a better marker for diagnostic purposes in prostate cancer.
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Affiliation(s)
- Beatriz Gil-Araujo
- Departamento de Bioquímica, Facultad de Medicina, Universidad Autónoma de Madrid (UAM), Instituto de Investigaciones Biomédicas Alberto Sols CSIC-UAM, Arturo Duperier 4, 28029 Madrid, Spain
| | - María-Val Toledo Lobo
- Departamento de Biología Celular y Genética, Universidad de Alcalá, Madrid, Spain; IRYCIS, Instituto de Investigaciones Sanitarias Ramón y Cajal, Madrid, Spain
| | - María Gutiérrez-Salmerón
- Departamento de Bioquímica, Facultad de Medicina, Universidad Autónoma de Madrid (UAM), Instituto de Investigaciones Biomédicas Alberto Sols CSIC-UAM, Arturo Duperier 4, 28029 Madrid, Spain
| | - Julia Gutiérrez-Pitalúa
- Departamento de Bioquímica, Facultad de Medicina, Universidad Autónoma de Madrid (UAM), Instituto de Investigaciones Biomédicas Alberto Sols CSIC-UAM, Arturo Duperier 4, 28029 Madrid, Spain
| | - Santiago Ropero
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad de Alcalá, Madrid, Spain
| | - Javier C Angulo
- Servicio de Urología, Hospital Universitario de Getafe, Madrid, Spain
| | - Antonio Chiloeches
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad de Alcalá, Madrid, Spain
| | - Marina Lasa
- Departamento de Bioquímica, Facultad de Medicina, Universidad Autónoma de Madrid (UAM), Instituto de Investigaciones Biomédicas Alberto Sols CSIC-UAM, Arturo Duperier 4, 28029 Madrid, Spain.
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Korbelik M, Zhang W, Saw KM, Szulc ZM, Bielawska A, Separovic D. Cationic ceramides and analogues, LCL30 and LCL85, as adjuvants to photodynamic therapy of tumors. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2013; 126:72-7. [PMID: 23911762 DOI: 10.1016/j.jphotobiol.2013.06.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 06/01/2013] [Accepted: 06/22/2013] [Indexed: 11/18/2022]
Abstract
Photodynamic therapy (PDT) is known to alter the expression of various genes in treated cells. This prompted us to examine the activity of genes encoding two important enzymes in sphingolipid (SL) metabolism, dihydroceramide desaturase (DES) and sphingosine kinase (SPHK), in mouse SCCVII tumor cells treated by PDT using either the porphyrin-based photosensitizer Photofrin or silicon phthalocyanine Pc4. The results revealed that PDT induced an upregulation in the expression of two major isoforms of both genes (DES1 and DES2 as well as SPHK1 and SPHK2). While the changes were generally moderate (2-3-fold gains), the increase in DES2 expression was more pronounced and it was much greater with Photofrin-PDT than with Pc4-PDT (over 23-fold vs. less than 5-fold). Combining either Photofrin-PDT or Pc4-PDT with the cationic C16-ceramide LCL30 (20mg/kg i.p.) for treatment of subcutaneously growing SCCVII tumors rendered important differences in the therapy outcome. Photofrin-PDT, used at a dose that attained good initial response but no tumor cures, produced 50% cures when combined with a single LCL30 treatment. In contrast, the same LCL30 treatment combined with Pc4-PDT had no significant effect on tumor response. The optimal timing of LCL30 injection was immediately after Photofrin-PDT. The therapeutic benefit was lost when LCL30 was given in two 20mg/kg injections encompassing intervals before and after PDT. LCL85, the cationic B13 ceramide analogue and SL-modulating agent, also increased cure rates of Photofrin-PDT treated tumors, but the therapeutic benefit was less pronounced than with LCL30. These results with LCL30 and LCL85, and our previous findings for LCL29 (another SL analogue), assert the potential of SLs for use as adjuvants to augment the efficacy of PDT-mediated tumor destruction.
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Barathan M, Mariappan V, Shankar EM, Abdullah BJJ, Goh KL, Vadivelu J. Hypericin-photodynamic therapy leads to interleukin-6 secretion by HepG2 cells and their apoptosis via recruitment of BH3 interacting-domain death agonist and caspases. Cell Death Dis 2013; 4:e697. [PMID: 23807226 PMCID: PMC3702308 DOI: 10.1038/cddis.2013.219] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Photodynamic therapy (PDT) has emerged as a capable therapeutic modality for the treatment of cancer. PDT is a targeted cancer therapy that reportedly leads to tumor cell apoptosis and/or necrosis by facilitating the secretion of certain pro-inflammatory cytokines and expression of multiple apoptotic mediators in the tumor microenvironment. In addition, PDT also triggers oxidative stress that directs tumor cell killing and activation of inflammatory responses. However, the cellular and molecular mechanisms underlying the role of PDT in facilitating tumor cell apoptosis remain ambiguous. Here, we investigated the ability of PDT in association with hypericin (HY) to induce tumor cell apoptosis by facilitating the induction of reactive oxygen species (ROS) and secretion of Th1/Th2/Th17 cytokines in human hepatocellular liver carcinoma cell line (HepG2) cells. To discover if any apoptotic mediators were implicated in the enhancement of cell death of HY-PDT-treated tumor cells, selected gene profiling in response to HY-PDT treatment was implemented. Experimental results showed that interleukin (IL)-6 was significantly increased in all HY-PDT-treated cells, especially in 1 μg/ml HY-PDT, resulting in cell death. In addition, quantitative real-time PCR analysis revealed that the expression of apoptotic genes, such as BH3-interacting-domain death agonist (BID), cytochrome complex (CYT-C) and caspases (CASP3, 6, 7, 8 and 9) was remarkably higher in HY-PDT-treated HepG2 cells than the untreated HepG2 cells, entailing that tumor destruction of immune-mediated cell death occurs only in PDT-treated tumor cells. Hence, we showed that HY-PDT treatment induces apoptosis in HepG2 cells by facilitating cytotoxic ROS, and potentially recruits IL-6 and apoptosis mediators, providing additional hints for the existence of alternative mechanisms of anti-tumor immunity in hepatocellular carcinoma, which contribute to long-term suppression of tumor growth following PDT.
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Affiliation(s)
- M Barathan
- Tropical Infectious Disease Research and Education Center (TIDREC), Department of Medical Microbiology, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Pluquet O, Dejeans N, Bouchecareilh M, Lhomond S, Pineau R, Higa A, Delugin M, Combe C, Loriot S, Cubel G, Dugot-Senant N, Vital A, Loiseau H, Gosline SJC, Taouji S, Hallett M, Sarkaria JN, Anderson K, Wu W, Rodriguez FJ, Rosenbaum J, Saltel F, Fernandez-Zapico ME, Chevet E. Posttranscriptional regulation of PER1 underlies the oncogenic function of IREα. Cancer Res 2013; 73:4732-43. [PMID: 23752693 DOI: 10.1158/0008-5472.can-12-3989] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Growing evidence supports a role for the unfolded protein response (UPR) in carcinogenesis; however, the precise molecular mechanisms underlying this phenomenon remain elusive. Herein, we identified the circadian clock PER1 mRNA as a novel substrate of the endoribonuclease activity of the UPR sensor IRE1α. Analysis of the mechanism shows that IRE1α endoribonuclease activity decreased PER1 mRNA in tumor cells without affecting PER1 gene transcription. Inhibition of IRE1α signaling using either siRNA-mediated silencing or a dominant-negative strategy prevented PER1 mRNA decay, reduced tumorigenesis, and increased survival, features that were reversed upon PER1 silencing. Clinically, patients showing reduced survival have lower levels of PER1 mRNA expression and increased splicing of XBP1, a known IRE-α substrate, thereby pointing toward an increased IRE1α activity in these patients. Hence, we describe a novel mechanism connecting the UPR and circadian clock components in tumor cells, thereby highlighting the importance of this interplay in tumor development.
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Affiliation(s)
- Olivier Pluquet
- Inserm U1053, University of Bordeaux, 146 rue Leo Saignat, 33076 Bordeaux Cedex, France
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Merchant S, Korbelik M. Upregulation of genes for C-reactive protein and related pentraxin/complement proteins in photodynamic therapy-treated human tumor cells: enrolment of PI3K/Akt and AP-1. Immunobiology 2013; 218:869-74. [PMID: 23182717 DOI: 10.1016/j.imbio.2012.10.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 09/21/2012] [Accepted: 10/17/2012] [Indexed: 11/25/2022]
Abstract
Treatment of mouse tumors by photodynamic therapy (PDT) was reported to trigger the production of serum amyloid P component (SAP), a prototypic acute phase reactant in the mouse, that occurs in the targeted tumor as well as distant sites dominated by host's liver. It was also shown that the SAP gene becomes upregulated and protein produced in mouse tumor cells treated by PDT in vitro. Present study revealed that, in addition to SAP, increased expression of genes encoding related pentraxin and complement proteins, including PTX3, C1q and ficolin B, can be found in mouse LLC tumor cells treated by PDT. Since in humans C-reactive protein (CRP) is more important acute phase reactant than SAP, the expression of gene encoding this pentraxin protein was examined in human lung tumor A549 cells treated by PDT. The results demonstrated a PDT dose-dependent upregulation of CRP gene, as well as of PTX3 and ficolin 1 genes in these cells. Investigation into the signal transduction process underlying PDT-induced human CRP gene upregulation using specific inhibitors of critical signaling elements revealed critical role played by PI3K/Akt pathway. Downstream DNA transcription factor largely responsible for this increased CRP gene expression is AP-1 with possible cooperation of HIF-1. It was suggested that cells sensing to have sustained a mortal injury from PDT can turn on molecular programs ensuring that the disposal of their corpses (facilitated by CRP and related pentraxin and complement components) is swift and efficient.
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Johansson A, Faber F, Kniebühler G, Stepp H, Sroka R, Egensperger R, Beyer W, Kreth FW. Protoporphyrin IX fluorescence and photobleaching during interstitial photodynamic therapy of malignant gliomas for early treatment prognosis. Lasers Surg Med 2013; 45:225-34. [PMID: 23533060 DOI: 10.1002/lsm.22126] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2013] [Indexed: 02/03/2023]
Abstract
BACKGROUND AND OBJECTIVE Interstitial photodynamic therapy (iPDT) of non-resectable recurrent glioblastoma using 5-aminolevulinic acid (ALA)-induced protoporphyrin IX (PpIX) has shown a promising outcome. It remained unclear, however, to what extent inter- and intra-tumoural differences of PpIX concentrations influence the efficacy of iPDT. In the current pilot study, we analysed PpIX concentrations quantitatively and assessed PpIX induced fluorescence and photobleaching intraoperatively. MATERIALS AND METHODS Five patients harbouring non-resectable glioblastomas were included. ALA (20 or 30 mg/kg body weight) was given 5-8 hours before treatment. Stereotactic biopsies were taken throughout the tumour volume for both histological analysis and determination of PpIX concentrations, which were measured by chemical extraction. Cylindrical light diffusors were stereotactically implanted. Prior to and after irradiation, fluorescence measurements were performed. Outcome measurement was based on clinical and neuro-radiological follow up. RESULTS In three patients, a strong PpIX fluorescence was seen before treatment, which was completely photobleached after iPDT. High concentrations of PpIX could be detected in viable tumour parts of these patients (mean PpIX uptake per tumour: 1.4-3.0 µM). In the other two patients, however, no or only low PpIX uptake (0-0.6 µM) could be detected. The patients with strong PpIX uptake showed treatment response and long-term clinical stabilisation (no progression in 29, 30 and 36 months), early treatment failure was seen in the remaining two patients (death after 3 and 9 months). CONCLUSIONS Intra-tumoural PpIX concentrations exhibited pronounced inter- and intra-tumoural variations in glioblastoma, which are directly linked to variable degrees of fluorescence intensity. High intra-tumoural PpIX concentrations with strong fluorescence intensity and complete photobleaching after iPDT seem to be associated with favourable outcome. Real-time monitoring of PpIX fluorescence intensity and photobleaching turned out to be feasible and safe and might be employed for early treatment prognosis of iPDT.
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Affiliation(s)
- Ann Johansson
- Laser-Forschungslabor, University Hospital of Munich, Marchioninistraße 23, 81377 Munich, Germany
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Zheng Y, Le V, Cheng Z, Xie S, Li H, Tian J, Liu J. Development of rapid and highly sensitive HSPA1A promoter-driven luciferase reporter system for assessing oxidative stress associated with low-dose photodynamic therapy. Cell Stress Chaperones 2013; 18:203-13. [PMID: 23160804 PMCID: PMC3581624 DOI: 10.1007/s12192-012-0374-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 09/07/2012] [Indexed: 12/11/2022] Open
Abstract
Photodynamic therapy (PDT) is a regulatory-approved modality for treating a variety of malignant tumors. It induces tumor tissue damage via photosensitizer-mediated oxidative cytotoxicity. The heat shock protein 70 (HSP70-1) is a stress protein encoded by the HSPA1A gene and is significantly induced by oxidative stress associated with PDT. The aim of this study was to identify the functional region of the HSPA1A promoter that responds to PDT-induced oxidative stress and uses the stress responsiveness of HSPA1A expression to establish a rapid and cost-effective photocytotoxic assessment bioassay to evaluate the photodynamic potential of photosensitizers. By constructing luciferase vectors with a variety of hspa1a promoter fractions and examining their relative luciferase activity, we demonstrated that the DNA sequence from -218 to +87 of the HSPA1A gene could be used as a functional promoter to detect the PDT-induced oxidative stress. The maximal relative luciferase activity level of HSPA1A (HSP70-1) induced by hypericin-PDT was nearly nine times that of the control. Our results suggest that the novel reporter gene assay using a functional region of the HSP70A1A promoter has significant advantages for the detection of photoactivity in terms of both speed and sensitivity, when compared with a cell viability test based on ATP quantification and ROS levels. Furthermore, phthalocyanine zinc and methylene blue both induced significantly elevated levels of relative luciferase activity in a dose-dependent manner.
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Affiliation(s)
- Yuanhong Zheng
- />State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, #268, 130 Meilong Road, Shanghai, 200237 People’s Republic of China
| | - Vanminh Le
- />State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, #268, 130 Meilong Road, Shanghai, 200237 People’s Republic of China
| | - Zhuoan Cheng
- />State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, #268, 130 Meilong Road, Shanghai, 200237 People’s Republic of China
| | - Sheng Xie
- />State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, #268, 130 Meilong Road, Shanghai, 200237 People’s Republic of China
| | - Hegeng Li
- />Department of Oncology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, National Clinical Research Centre for Traditional Chinese Medicine and Oncology, 725, South Wanping Road, Shanghai, 200032 People’s Republic of China
| | - Jianhui Tian
- />Department of Oncology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, National Clinical Research Centre for Traditional Chinese Medicine and Oncology, 725, South Wanping Road, Shanghai, 200032 People’s Republic of China
| | - Jianwen Liu
- />State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, #268, 130 Meilong Road, Shanghai, 200237 People’s Republic of China
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Kushibiki T, Hirasawa T, Okawa S, Ishihara M. Responses of Cancer Cells Induced by Photodynamic Therapy. JOURNAL OF HEALTHCARE ENGINEERING 2013; 4:87-108. [DOI: 10.1260/2040-2295.4.1.87] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Comprehensive analysis of alterations in the miRNome in response to photodynamic treatment. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2013; 120:74-81. [PMID: 23466801 DOI: 10.1016/j.jphotobiol.2013.01.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 01/23/2013] [Accepted: 01/24/2013] [Indexed: 01/03/2023]
Abstract
Photodynamic therapy (PDT) is a local tumour treatment accepted for a number of indications. PDT operates via the cellular stress response through the production of reactive oxygen species and subsequent cellular damage, resulting in cell death. Although PDT-induced signalling and cytotoxicity mechanisms have been investigated, the effect of PDT on microRNA (miRNA) expression is largely unknown. Therefore, we conducted a comprehensive microarray-based analysis of the miRNome of human epidermoid carcinoma cells (A431) following in vitro photodynamic treatment using polyvinylpyrrolidone hypericin (PVPH) as a photosensitiser and nearly homogeneous apoptosis-inducing conditions. Using microarray analysis we found eight miRNAs to be significantly differentially expressed 5h post treatment compared with the baseline levels and three miRNAs with more than 2-fold differential expression that could be detected in 1 or 2 biological replicates. The verification of these results by quantitative RT-PCR including a detailed time-course revealed an up to 15-fold transient over-expression of miR-634, miR-1246, miR-1290 and miR-487b compared with the basal level. For these miRNAs, in silico mRNA target prediction yielded numerous target transcripts involved in the regulation of cell stress, apoptosis, cell adherence and proliferation. This study provides the first comprehensive miRNome analysis after PDT treatment and may help to develop novel miRNA-based therapeutic approaches to further increase the efficiency of PDT.
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In vitro analysis of photosensitizer accumulation for assessment of applicability of fluorescence diagnosis of squamous cell carcinoma of epidermolysis bullosa patients. BIOMED RESEARCH INTERNATIONAL 2012; 2013:521281. [PMID: 23509735 PMCID: PMC3591193 DOI: 10.1155/2013/521281] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Revised: 08/28/2012] [Accepted: 08/28/2012] [Indexed: 01/04/2023]
Abstract
Epidermolysis bullosa (EB) is a group of inherited skin disorders characterized by blistering following mechanical trauma. Chronic wounds of EB patients often lead to tumors such as squamous cell carcinoma (SCC). Early diagnosis may prevent its invasive growth--frequently the reason of premature mortality of EB-patients. Early detection of tumors is achieved by fluorescence diagnosis (FD), where photosensitizers localize selectively in tumors and fluoresce upon illumination. Excessive accumulation of photosensitizers in inflamed areas, as occasionally found at chronic wounds and tumors due to inflammatory processes, leads to false-positive results in FD. This study analyzed accumulation kinetics of the photosensitizers hypericin and endogenous protoporphyrin IX (PpIX) in different skin cell lines including the three EB subtypes under normal and proinflammatory conditions (stimulated with TNF-alpha). The aim was to assess the applicability of FD of SCC in EB. All cell lines accumulate hypericin or PpIX mostly increasing with incubation time, but with different kinetics. SCC cells of recessive dystrophic EB (RDEB) accumulate less hypericin or PpIX than nonmalignant RDEB cells. Nevertheless, tumor selectivity in vivo might be existent. Non-EB cell lines are more active concerning photosensitizer enrichment. Proinflammatory conditions of skin cell lines seem to have no major influence on photosensitizer accumulation.
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Tracy EC, Bowman MJ, Henderson BW, Baumann H. Interleukin-1α is the major alarmin of lung epithelial cells released during photodynamic therapy to induce inflammatory mediators in fibroblasts. Br J Cancer 2012; 107:1534-46. [PMID: 22996613 PMCID: PMC3493767 DOI: 10.1038/bjc.2012.429] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Background: Photodynamic therapy (PDT) causes tissue damage that initiates a local inflammatory response. Post-PDT reactions are considered to assist in mobilising the immune system thereby affecting tumour recurrence. The initiating process of the PDT-dependent tissue reaction remains to be determined. Methods: Primary cultures of human lung cells were established. The photoreaction mediated by pyropheophorbide-a, at specific subcellular sites and levels resulting in the release of alarmins by epithelial cells (Eps), was defined by immunoblot analyses and expression profiling. The activity of Ep-derived factors to stimulate expression of proinflammatory mediators, including IL-6, and to enhance neutrophil binding by fibroblasts (Fbs) was determined by functional bioassays. Results: Epithelial cells release IL-1β as the primary Fb-stimulatory activity under basal conditions. Intracellular IL-1α, externalised following photoreaction, accounts for most of the PDT-mediated Fb activation. Expression of IL-1 is subject to increase or loss during oncogenic transformation resulting in altered alarmin functions mobilisable by PDT. Photoreaction by a cell surface-bound photosensitiser (PS) is 10-fold more effective than PSs localised to mitochondria or lysosomes. High-dose intracellular, but not cell surface, photoreaction inactivates IL-1 and reduces Fb stimulation. Conclusion: These in vitro data suggest that the subcellular site and intensity of photoreaction influence the magnitude of the stromal cell response to the local damage and, in part, support the relationship of PDT dose and level of post-PDT inflammatory response observed in vivo.
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Affiliation(s)
- E C Tracy
- Departments of Molecular and Cellular Biology, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
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Lauber K, Ernst A, Orth M, Herrmann M, Belka C. Dying cell clearance and its impact on the outcome of tumor radiotherapy. Front Oncol 2012; 2:116. [PMID: 22973558 PMCID: PMC3438527 DOI: 10.3389/fonc.2012.00116] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Accepted: 08/27/2012] [Indexed: 12/29/2022] Open
Abstract
The induction of tumor cell death is one of the major goals of radiotherapy and has been considered to be the central determinant of its therapeutic outcome for a long time. However, accumulating evidence suggests that the success of radiotherapy does not only derive from direct cytotoxic effects on the tumor cells alone, but instead might also depend – at least in part – on innate as well as adaptive immune responses, which can particularly target tumor cells that survive local irradiation. The clearance of dying tumor cells by phagocytic cells of the innate immune system represents a crucial step in this scenario. Dendritic cells and macrophages, which engulf, process and present dying tumor cell material to adaptive immune cells, can trigger, skew, or inhibit adaptive immune responses, respectively. In this review we summarize the current knowledge of different forms of cell death induced by ionizing radiation, the multi-step process of dying cell clearance, and its immunological consequences with special regard toward the potential exploitation of these mechanisms for the improvement of tumor radiotherapy.
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Affiliation(s)
- Kirsten Lauber
- Department of Radiotherapy and Radiation Oncology, Ludwig Maximilian University of Munich Munich, Germany
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Kim YW, Bae SM, Battogtokh G, Bang HJ, Ahn WS. Synergistic anti-tumor effects of combination of photodynamic therapy and arsenic compound in cervical cancer cells: in vivo and in vitro studies. PLoS One 2012; 7:e38583. [PMID: 22715393 PMCID: PMC3371011 DOI: 10.1371/journal.pone.0038583] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Accepted: 05/07/2012] [Indexed: 01/28/2023] Open
Abstract
The effects of As(4)O(6) as adjuvant on photodynamic therapy (PDT) were studied. As(4)O(6) is considered to have anticancer activity via several biological actions, such as free radical production and inhibition of VEGF expression. PDT or As(4)O(6) significantly inhibited TC-1 cell proliferation in a dose-dependent manner (P<0.05) by MTT assay. The anti-proliferative effect of the combination treatment was significantly higher than in TC-1 cells treated with either photodynamic therapy or As(4)O(6) alone (62.4 and 52.5% decrease compared to vehicle-only treated TC-1 cells, respectively, P<0.05). In addition, cell proliferation in combination of photodynamic therapy and As(4)O(6) treatment significantly decreased by 77.4% (P<0.05). Cell survival pathway (Naip1, Tert and Aip1) and p53-dependent pathway (Bax, p21(Cip1), Fas, Gadd45, IGFBP-3 and Mdm-2) were markedly increased by combination treatment of photodynamic therapy and As(4)O(6). In addition, the immune response in the NEAT pathway (Ly-12, CD178 and IL-2) was also modulated after combination treatment, suggesting improved antitumor effects by controlling unwanted growth-stimulatory pathways. The combination effect apparently reflected concordance with in vitro data, in restricting tumor growth in vivo and in relation to some common signaling pathways to those observed in vitro. These findings suggest the benefit of combinatory treatment with photodynamic therapy and As(4)O(6) for inhibition of cervical cancer cell growth.
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Affiliation(s)
- Yong-Wan Kim
- Catholic Research Institutes of Medical Science, The Catholic University of Korea, Seoul, Korea
| | - Su Mi Bae
- Catholic Research Institutes of Medical Science, The Catholic University of Korea, Seoul, Korea
| | - Gantumur Battogtokh
- Catholic Research Institutes of Medical Science, The Catholic University of Korea, Seoul, Korea
| | - Hyo Joo Bang
- Catholic Research Institutes of Medical Science, The Catholic University of Korea, Seoul, Korea
| | - Woong Shick Ahn
- Department of Obstetrics and Gynecology, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Uzdensky A, Kristiansen B, Moan J, Juzeniene A. Dynamics of signaling, cytoskeleton and cell cycle regulation proteins in glioblastoma cells after sub-lethal photodynamic treatment: antibody microarray study. Biochim Biophys Acta Gen Subj 2012; 1820:795-803. [PMID: 22484521 DOI: 10.1016/j.bbagen.2012.03.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Revised: 03/08/2012] [Accepted: 03/09/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND Photodynamic therapy (PDT) that induces oxidative stress and cell death is used for tumor destruction in oncology. To characterize early molecular events in photosensitized glioblastoma cells, we studied expression of 224 proteins after sublethal PDT that doesn't kill but wounds cells. METHODS Cultured glioblastoma D54Mg cells were photosensitized with 5-aminolevulinic acid so that cell survival was 95-100%. At following 0.5-5.5h protein expression and phosphorylation was assayed using proteomic antibody microarrays. RESULTS Within the first post-treatment hour we observed phosphorylation of protein kinase Raf, adhesion-related kinases FAK and Pyk2, and microtubule-associated protein tau. Protein kinase Cγ and microtubule-associated protein MAP-1B were overexpressed. Dystrophin, calponin, and vinculin, components of the actin cytoskeleton scaffold, microtubule-associated proteins MAP2 and CNP, cytokeratins 4 and 7 were down-regulated that indicated changes in adhesion and cell shape. Down-regulation of cyclins A, D1 and D3, c-Myc, checkpoint proteins chk1/2 and up-regulation of Smad4 could arrest the cell cycle. Overexpression of Bcl-xL and down-regulation of caspase 9 demonstrated anti-apoptotic response. At 2h post-treatment protein expression changed lesser but at 5.5h levels of PKCγ and β-synuclein and phosphorylation of Raf, FAK, Pyk2, and tau increased again. CONCLUSIONS Sub-lethal PDT induces complex response of glioblastoma cells including changes in activity and expression of proteins involved in adhesion-mediated signaling, signal transduction, cytoskeleton remodeling, cell cycle regulation and anti-apoptotic processes. GENERAL SIGNIFICANCE Multiple reactions of various cellular subsystems including adhesion, cytoskeleton, signal transduction, cell cycle, and apoptosis are integrated into the general cell response to a sublethal impact.
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Affiliation(s)
- Anatoly Uzdensky
- Department of Biophysics, Southern Federal University, Stachky 194/1, 344090, Rostov-on-Don, Russia.
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