The DOI matches its Crossref record.
Characterization of Photofrin photobleaching for singlet oxygen dose estimation during photodynamic therapy of MLL cells in vitro
Abstract
A singlet oxygen dose model is developed for PDT with Photofrin. The model is based on photosensitizer photobleaching kinetics, and incorporates both singlet oxygen and non-singlet oxygen mediated bleaching mechanisms. To test our model, in vitro experiments were performed in which MatLyLu (MLL) cells were incubated in Photofrin and then irradiated with 532 nm light. Photofrin fluorescence was monitored during treatment and, at selected fluence levels, cell viability was determined using a colony formation assay. Cell survival correlated well to calculated singlet oxygen dose, independent of initial Photofrin concentration or oxygenation. About 2 x 10(8) molecules of singlet oxygen per cell were required to reduce the surviving fraction by 1/e. Analysis of the photobleaching kinetics suggests that the lifetime of singlet oxygen in cells is 0.048 +/- 0.005 micros. The generation of fluorescent photoproducts was not a result of singlet oxygen reactions exclusively, and therefore did not yield additional information to aid in quantifying singlet oxygen dose.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Photodynamic therapy of cancer: An update
Agostinis, P., Berg, K., Cengel, K. A., Foster, T. H., Girotti, A. W., Gollnick, S. O., Hahn, S. M., Hamblin, M. R., Juzeniene, A., Kessel, D., et al. (2011) · CA: A Cancer Journal for Clinicians · doi:10.3322/caac.20114 · Cited by 5,145
Redox Signaling by Reactive Electrophiles and Oxidants
Parvez, S., Long, M. J. C., Poganik, J. R., & Aye, Y. (2018) · Chemical Reviews · doi:10.1021/acs.chemrev.7b00698 · Cited by 359
Current Challenges and Opportunities of Photodynamic Therapy against Cancer
Huis in ‘t Veld, R. V., Heuts, J., Ma, S., Cruz, L. J., Ossendorp, F. A., & Jager, M. J. (2023) · Pharmaceutics · doi:10.3390/pharmaceutics15020330 · Cited by 159
Ultrasound-activated nanomaterials for sonodynamic cancer theranostics
Wu, N., Fan, C.-H., & Yeh, C.-K. (2022) · Drug Discovery Today · doi:10.1016/j.drudis.2022.02.025 · Cited by 49
Metadata
- Authors
- Dysart, J. S., & Patterson, M. S.
- Venue
- Physics in Medicine and Biology
- Publisher
- IOP Publishing
- Published
- 2005-05-18
- Volume
- 50
- Issue
- 11
- Pages
- 2597-2616
- ISSN
- 0031-9155 (ISSN-L)
- 1361-6560
- OpenAlex
- W2011383446
- Cited by
- 225
- References
- 0
- FWCI
- 4.69
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Characterization of Photofrin photobleaching for singlet oxygen dose estimation during photodynamic therapy of MLL cells in vitro. https://app.cochat.ai/papers/10.1088/0031-9155/50/11/011
- The paper
- Dysart, J. S., & Patterson, M. S. (2005). Characterization of Photofrin photobleaching for singlet oxygen dose estimation during photodynamic therapy of MLL cells in vitro. Physics in Medicine and Biology. https://doi.org/10.1088/0031-9155/50/11/011
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
