Tag Archives: in vitro

Self-Assembled Verteporfin Nanoparticles for Photodynamic and Light-Independent Therapy in Glioblastoma

September 28, 2024 by Modulight Content
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Published in: Advanced NanoBioMed Research Authors: John A. Quinlan, Kaylin Baumiller, Anandita Gaur, Wen-An Chiou, Robert W. Robey, Michael M. Gottesman, Huang-Chiao Huang  Published in: Advanced NanoBioMed Research Authors: John A. Quinlan, Kaylin Baumiller, Anandita Gaur, Wen-An Chiou, Robert W. Robey, Michael M. Gottesman, Huang-Chiao Huang A nanosuspension of verteporfin, termed NanoVP, that requires no carriers is developed, permitting delivery of VP alone in an aqueous solution. NanoVP is produced by solvent–antisolvent precipitation, with dimethyl sulfoxide as the preferable solvent. The paper describes the characterization of NanoVP, including bioavailability and anticancer capacity in glioblastoma with ML6600 laser irradiation, as well as potontial of NanoVP for light-independent therapy.   Read Continue reading →

Modulight Spotlights: LASER-SHARP RESEARCH – September 2024

September 23, 2024 by Modulight Content
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 Modulight Spotlights: LASER-SHARP RESEARCH – September 2024 University of Maryland and Modulight have published together a new research study about the mechanisms of cancer drug resistance. Drug resistance is a leading cause of treatment failure and often has dramatic consequences for survival of cancer patients. Cancer cells have developed various ways to protect themselves from drugs. When several clinically used photoactive drugs were studied, it was shown that some of them were being actively pumped out by cancer cells, thus likely limiting the full therapeutic potential Continue reading →

Screening of photosensitizers-ATP binding cassette (ABC) transporter interactions in vitro

September 20, 2024 by Modulight Content
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Published in: Cancer Drug Resistance Authors: Shruti Vig1, Payal Srivastava1,#, Idrisa Rahman1,2,#, Renee Jaranson1, Anika Dasgupta1, Robert Perttilä3, Petteri Uusimaa3, Huang-Chiao Huang1  Published in: Cancer Drug Resistance Authors: Shruti Vig1, Payal Srivastava1,#, Idrisa Rahman1,2,#, Renee Jaranson1, Anika Dasgupta1, Robert Perttilä3, Petteri Uusimaa3, Huang-Chiao Huang1 University of Maryland and Modulight have published together a new research study about the mechanisms of cancer drug resistance. Drug resistance is a leading cause of treatment failure and often has dramatic consequences for survival of cancer patients. Cancer cells have developed various ways to protect themselves from drugs. When several clinically used photoactive drugs were studied, it was shown that some of them were being actively pumped out by cancer cells, thus likely limiting the full therapeutic potential of these Continue reading →

Modulight Spotlights: LASER-SHARP RESEARCH – June 2024

June 12, 2024 by Modulight Content
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 Modulight Spotlights: LASER-SHARP RESEARCH – June 2024 A promising new therapy against viruses was developed at University of Manitoba and Theralase Technologies. Infectious agents are a global problem, causing millions of deaths every year. The study evaluated antiviral effectiveness of a cancer drug (Ruvidar), which is currently in clinical development for bladder cancer. When this drug was activated with green laser using Modulight’s ML6600, it resulted in a rapid elimination of many different human viruses. Impressively, it was >99% effective at low doses in inactivating human coronavirus, influenza Continue reading →

Ru(II) Oligothienyl Complexes with Fluorinated Ligands: Photophysical, Electrochemical, and Photobiological Properties

May 10, 2024 by Modulight Content
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Published in: Inorganic Chemistry Authors: Houston D. Cole, Abbas Vali, John A. Roque III, Ge Shi, Alisher Talgatov, Gurleen Kaur, Antonio Francés-Monerris, Marta E. Alberto, Colin G. Cameron, Sherri A. McFarland  Published in: Inorganic Chemistry Authors: Houston D. Cole, Abbas Vali, John A. Roque III, Ge Shi, Alisher Talgatov, Gurleen Kaur, Antonio Francés-Monerris, Marta E. Alberto, Colin G. Cameron, Sherri A. McFarland A series of Ru(II) complexes were characterized and assessed for phototherapy effects toward cancer cells. Also activity in hypoxia was evaluated, with some of the compounds retaining partial activity in hypoxia. ML8500 was used for dosimetry studies, assessing impact of irradiance on the phototoxicity of Ru-4T with several different wavelengths. LEDs were used for Continue reading →

Near‐infrared photoimmunotherapy targeting PD‐L1: Improved efficacy by preconditioning the tumor microenvironment

April 26, 2024 by Modulight Content
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Published in: Cancer Science Authors: Fuyuki F. Inagaki, Makoto Kano, Aki Furusawa, Takuya Kato, Ryuhei Okada, Hiroshi Fukushima, Seiichiro Takao, Shuhei Okuyama, Peter L. Choyke, Hisataka Kobayashi  Published in: Cancer Science Authors: Fuyuki F. Inagaki, Makoto Kano, Aki Furusawa, Takuya Kato, Ryuhei Okada, Hiroshi Fukushima, Seiichiro Takao, Shuhei Okuyama, Peter L. Choyke, Hisataka Kobayashi In this study, the efficacy of PD-L1-targeted NIR-PIT (photoimmunotherapy) with ML7710 was assessed in immune-competent tumor mouse models. PIT showed a significant therapeutic effect on the tumor models with high PD-L1 expression. Furthermore, it induced an abscopal effect on distant tumors and long-term immunological memory. Combination with interferon-gamma improved the treatment efficacy by increasing PD-L1 expression leading to more Continue reading →

Near-infrared photoimmunotherapy targeting Nectin-4 in a preclinical model of bladder cancer

March 31, 2024 by Modulight Content
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Published in: Cancer Letters Authors: Hiroshi Fukushima, Seiichiro Takao, Aki Furusawa, Vladimir Valera Romero, Sandeep Gurram, Takuya Kato, Shuhei Okuyama, Makoto Kano, Peter L. Choyke, Hisataka Kobayashi  Published in: Cancer Letters Authors: Hiroshi Fukushima, Seiichiro Takao, Aki Furusawa, Vladimir Valera Romero, Sandeep Gurram, Takuya Kato, Shuhei Okuyama, Makoto Kano, Peter L. Choyke, Hisataka Kobayashi Enfortumab vedotin (EV), an antibody-drug conjugate (ADC) that targets Nectin-4, has shown promising results in the treatment of bladder cancer. The study investigated use of Nectin-4 targeting photoimmunotherapy in preclinical bladder cancer models. ML7710 was used as light source for activating the therapy in vitro and in vivo.   Read the article here

Phototruncation cell tracking with near-infrared photoimmunotherapy using heptamethine cyanine dye to visualise migratory dynamics of immune cells

March 14, 2024 by Modulight Content
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Published in: eBioMedicine Authors: Hiroshi Fukushima, Aki Furusawa, Seiichiro Takao, Siddharth S. Matikonda, Makoto Kano, Shuhei Okuyama, Hiroshi Yamamoto, Peter L. Choyke, Martin J. Schnermann, Hisataka Kobayashi  Published in: eBioMedicine Authors: Hiroshi Fukushima, Aki Furusawa, Seiichiro Takao, Siddharth S. Matikonda, Makoto Kano, Shuhei Okuyama, Hiroshi Yamamoto, Peter L. Choyke, Martin J. Schnermann, Hisataka Kobayashi A new method called phototruncation-assisted cell tracking (PACT) can be used to noninvasively track migration of immune cells to understand anti-cancer immunity mechanisms. PACT is based on irreversible photo-induced truncation reaction, transforming Cy7 into Cy5 when exposed to NIR light (780 nm). PACT was used in this study to monitor spatiotemporal migration of immune cells between tumor and Continue reading →

Development of thermosensitive liposomes with the help of ML8500

March 13, 2024 by Modulight Content
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Background The proper delivery and release of therapeutic drugs to a specific site or cell type is one of the main challenges in the treatment of diseases. Liposomes, which are vesicles composed of lipids, serve as carriers for drug delivery thanks to their long circulation time. This results to reduced toxicity in healthy tissues and improved therapeutic efficacy of encapsulated drugs. However, conventional liposomes can often be even too stabile, leading to insufficient drug release at the target site. Light activation can offer a solution Continue reading →Customer case Pharmaceutical Nanotechnology Group at University of Helsinki is specialized in top-level pharmaceutical research. Led by Professor Timo Laaksonen, the group focuses on controlled drug release and delivery using modern methods and materials. Particular interest lies in using light to both monitor nanomaterial behavior and to trigger e.g. drug release processes. Modulight products: ML8500, ML6600, MLAKIT   Prof. Timo Laaksonen Dr. Tatu Lajunen Laser use: Light-triggered drug release studies from light-activated liposomes. ML8500 with 808 nm wavelength was used to induce the release of calcein from liposomes under Continue reading →

Photoimmuno-antimicrobial therapy for Staphylococcus aureus implant infection

March 8, 2024 by Modulight Content
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Published in: PLoS One Authors: Bruce van Dijk, Sabrina Oliveira, J. Fred F. Hooning van Duyvenbode, F. Ruben H. A. Nurmohamed, Vida Mashayekhi, Irati Beltrán Hernández, Jos van Strijp, Lisanne de Vor, Piet C. Aerts, H. Charles Vogely, Harrie Weinans, Bart C. H. van der Wal  Published in: PLoS One Authors: Bruce van Dijk, Sabrina Oliveira, J. Fred F. Hooning van Duyvenbode, F. Ruben H. A. Nurmohamed, Vida Mashayekhi, Irati Beltrán Hernández, Jos van Strijp, Lisanne de Vor, Piet C. Aerts, H. Charles Vogely, Harrie Weinans, Bart C. H. van der Wal Photoimmuno-antimicrobial therapy (PIAT) was develop to treat implant infections that cause high morbidity and mortality worldwide. Antibody targeting Wall Teichoic Acid surface components of both S. aureus and its biofilm was conjugated to a photosensitizer IRDye700DX and used as Continue reading →