Potentiating effect of beta-glucans on photodynamic therapy of implanted cancer cells in mice
Open accessAbstract
Photodynamic therapy (PDT) combines a drug or photosensitizer with a specific type of light to kill cancer cells. The cellular damage induced by PDT leads to activation of the DNA damage repair, which is an important factor for modulating tumor sensitivity to this treatment. beta-Glucans are natural polysaccharides that bind complement receptor 3 on the effector cells, thereby activating them to kill tumor cells during PDT. The hypothesis of the present study was that adjuvant therapy with beta-glucans would increase the efficacy of PDT. C57BL/6 female mice were subcutaneously implanted with Lewis lung carcinoma cells. Ten days after implantation, the mice were administered intravenously sodium porfimer (10 mg/kg) 24 h prior to laser irradiation, with or without oral administration of beta-glucan (400 microg/d/mouse, 5 days) from either barley, baker's yeast, or marine brown algae that contains the storage glucan, laminarin. Tumor volume and necrotic area in excised tumors were measured. The expression of proliferating cell nuclear antigen (PCNA) was determined as an indicator of the activity of the DNA damage repair system. PDT in combination with each beta-glucan significantly reduced tumor growth (P < 0.05, n = 10) and expression of PCNA (P < 0.001, n = 9), and increased necrosis in tumor tissues (P < 0.001, n = 9). Furthermore, each structurally different
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Fermentation of laminaran by intestinal bacteria could suppress risk of colorectal cancer.
“These results suggest that the fermentation of laminaran by intestinal bacteria could suppress the risk of colorectal cancer [87,88].”
From Anticancer and Cancer Preventive Properties of Marine Polysaccharides: Some Results and Prospects (2013) · cites this paper as [87]
Laminarans noticeably inhibited formation of putrefactive and harmful compounds such as indoles, p-cresol, ammonia, phenol, and sulfide produced by fecal microflora.
“Laminarans noticeably inhibited the formation of putrefactive and harmful compounds, such as indoles, p-cresol, ammonia, phenol, and sulfide, produced by the fecal microflora.”
From Anticancer and Cancer Preventive Properties of Marine Polysaccharides: Some Results and Prospects (2013) · cites this paper as [87]
Polysaccharides were fermented into propionic and butyric acids by intestinal microbiota, similar to prebiotics.
“Polysaccharides were fermented into propionic and butyric acids by intestinal microbiota, similar to the effects of prebiotics.”
From Anticancer and Cancer Preventive Properties of Marine Polysaccharides: Some Results and Prospects (2013) · cites this paper as [87]
In both experiments (laminaran and alginic acid), intestinal bacterial flora of rats was changed.
“In both experiments (with laminaran and with alginic acid) the intestinal bacterial flora of rats was changed.”
From Anticancer and Cancer Preventive Properties of Marine Polysaccharides: Some Results and Prospects (2013) · cites this paper as [87]
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Research works printed but not linked: 1
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Anticancer and Cancer Preventive Properties of Marine Polysaccharides: Some Results and Prospects
Fedorov, S., Ermakova, S., Zvyagintseva, T., & Stonik, V. (2013) · Marine Drugs · doi:10.3390/md11124876 · Cited by 189 · see citing works
- Authors
- Akramiene, D., Aleksandraviciene, C., Grazeliene, G., Zalinkevicius, R., Suziedelis, K., Didziapetriene, J., Simonsen, U., Stankevicius, E., & Kevelaitis, E.
- Affiliations
- Department of Physiology, Kaunas University of Medicine
- Vilnius University (LT)
- Institute of Oncology, Vilnius University
- Institute of Endocrinology, Kaunas University of Medicine
- Aarhus University (DK)
- ORCID
- Simonsen, Ulf
- Venue
- The Tohoku Journal of Experimental Medicine
- Publisher
- Tohoku University Medical Press
- Published
- 2010
- Volume
- 220
- Issue
- 4
- Pages
- 299-306
- ISSN
- 0040-8727 (ISSN-L)
- 1349-3329
- OpenAlex
- W2076616337
- Cited by
- 17
- References
- 47
- Citations by year
- 2025: 1 · 2021: 1 · 2020: 2 · 2018: 1 · 2017: 1 · 2016: 1 · 2014: 1 · 2013: 3 · 2012: 2
- FWCI
- 2.40
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- The Tohoku Journal of Experimental Medicine (publishedVersion)
- PubMed (publishedVersion)
- Lithuanian University of Health Sciences (submittedVersion)
- Topics
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Photodynamic Therapy Research Studies
- Physical Sciences › Engineering › Biomedical Engineering › Nanoplatforms for cancer theranostics
- Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
- Keywords
- β-glucan, photodynamic therapy, Lewis lung carcinoma, complement receptor 3, DNA repair, proliferating cell nuclear antigen, laminarin, barley β-glucan, tumor necrosis, adjuvant therapy, tumor growth inhibition
- MeSH terms
- Animals, Combined Modality Therapy, Female, Lasers, Mice, Inbred C57BL, Neoplasms, Photochemotherapy, Xenograft Model Antitumor Assays, beta-Glucans, Mice
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