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Change in Cell Death Markers During (177)Lu-mAb Radioimmunotherapy-Induced Rejection of Syngeneic Rat Colon Carcinoma.
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- Elgström, Erika (författare)
- Lund University,Lunds universitet,Bröstcancer-genetik,Sektion I,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Breastcancer-genetics,Section I,Department of Clinical Sciences, Lund,Faculty of Medicine
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- Ljungberg, Otto (författare)
- Lund University,Lunds universitet,Patologi, Malmö,Forskargrupper vid Lunds universitet,Pathology, Malmö,Lund University Research Groups
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- Eriksson, Sophie (författare)
- Lund University,Lunds universitet,Bröstcancer-genetik,Sektion I,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Breastcancer-genetics,Section I,Department of Clinical Sciences, Lund,Faculty of Medicine
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- (creator_code:org_t)
- Mary Ann Liebert Inc, 2014
- 2014
- Engelska.
- Ingår i: Cancer Biotherapy & Radiopharmaceuticals. - : Mary Ann Liebert Inc. - 1557-8852 .- 1084-9785. ; 29:4, s. 143-152
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- Abstract Purpose: To monitor cell death in tumors during the rejection process after treatment with an antibody radiolabeled with a β-emitter. Methods: Tumors during rejection after treatment with (177)Lu-labeled antibody BR96 and after administration of unlabeled BR96 were compared with untreated tumors from the same immunocompetent syngeneic rat tumor model. Cell death was monitored with the terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay and immunohistochemical staining of activated caspase-3 and γH2AX. These data were evaluated together with histopathological morphology, BR96-binding antigen expression, and (177)Lu radioactivity distribution imaged by digital autoradiography. Results: The untreated tumors showed staining for all the markers, mainly in and around the necrotic areas. One to 2 days p.i. large areas were stained with anti-γH2AX, followed by a slight decrease. Staining of activated caspase-3 was intense and extensive 1-2 days p.i., while found in and around necrotic areas 3-8 days p.i. TUNEL staining was similar to activated caspase-3 staining 1-2 days p.i. but more extensive than activated caspase-3 staining 3-4 days p.i. Digital autoradiography revealed activity concentration in granulation tissue from 1 day p.i. Conclusion: Following radioimmunotherapy in an immunocompetent syngeneic colon carcinoma model, tumor cells did not only die through caspase-3-dependent apoptosis, but also by other mechanisms.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cancer and Oncology (hsv//eng)
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- Elgström, Erika
- Ljungberg, Otto
- Eriksson, Sophie
- Örbom, Anders
- Strand, Sven-Eri ...
- Ohlsson, Tomas G
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- Nilsson, Rune
- Tennvall, Jan
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