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Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models
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| Zeitschriftentitel: | Clinical Cancer Research |
|---|---|
| Personen und Körperschaften: | , , , , , , , |
| In: | Clinical Cancer Research, 13, 2007, 19, S. 5935-5941 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Association for Cancer Research (AACR)
|
| Schlagwörter: |
| author_facet |
Mocanu, Joseph D. Yip, Kenneth W. Skliarenko, Julia Shi, Wei Busson, Pierre Lo, Kwok-Wai Bastianutto, Carlo Liu, Fei-Fei Mocanu, Joseph D. Yip, Kenneth W. Skliarenko, Julia Shi, Wei Busson, Pierre Lo, Kwok-Wai Bastianutto, Carlo Liu, Fei-Fei |
|---|---|
| author |
Mocanu, Joseph D. Yip, Kenneth W. Skliarenko, Julia Shi, Wei Busson, Pierre Lo, Kwok-Wai Bastianutto, Carlo Liu, Fei-Fei |
| spellingShingle |
Mocanu, Joseph D. Yip, Kenneth W. Skliarenko, Julia Shi, Wei Busson, Pierre Lo, Kwok-Wai Bastianutto, Carlo Liu, Fei-Fei Clinical Cancer Research Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models Cancer Research Oncology |
| author_sort |
mocanu, joseph d. |
| spelling |
Mocanu, Joseph D. Yip, Kenneth W. Skliarenko, Julia Shi, Wei Busson, Pierre Lo, Kwok-Wai Bastianutto, Carlo Liu, Fei-Fei 1078-0432 1557-3265 American Association for Cancer Research (AACR) Cancer Research Oncology http://dx.doi.org/10.1158/1078-0432.ccr-06-3085 <jats:title>Abstract</jats:title> <jats:p>Purpose: The tumor microenvironment is complex and heterogeneous, populated by tortuous irregular vasculature, hypoxic cells, and necrotic regions. These factors can all contribute to the biodistribution difficulties encountered by most cancer therapeutic agents. Antisense oligodeoxynucleotides (ASO) are a class of therapeutics where limited information is available about their distribution within a solid tumor environment.</jats:p> <jats:p>Experimental Design: To assess ASO distribution, a fluorescein-labeled phosphorothionated ASO based on the G3139 mismatch control was injected systemically (i.v.) into tumor-bearing severe combined immunodeficient mice. Hoechst 33342 was injected i.v. to visualize active vasculature. Unstained sections were imaged through tiled fluorescence stereomicroscopy and then quantitated using novel algorithms. Tumor sections from four human tumor models were examined (CaSki, DU-145, C666-1, and C15) for hypoxia, apoptosis/necrosis, and morphology.</jats:p> <jats:p>Results: For all four tumors, ASO accumulated within regions of hypoxia, necrosis, and apoptosis. Scatter plots of ASO versus active vasculature generated for each individual tumor revealed a consistent pattern of distribution of the ASO within each model. In C666-1 xenografts, the slopes of these scatter plots were significantly reduced from 0.41 to 0.16 when pretreated with the antivascular agent ZD6126 48 h before ASO injection. This was accompanied by the formation of large disseminated necrotic regions in the tumor, along with a 13.1 mmHg reduction in interstitial fluid pressure.</jats:p> <jats:p>Conclusions: These data suggest the possibility that these algorithms might offer a generalizable and objective methodology to describe the distribution of molecular therapeutic agents within a tumor microenvironment and to quantitatively assess distribution changes in response to combination therapies.</jats:p> Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models Clinical Cancer Research |
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10.1158/1078-0432.ccr-06-3085 |
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American Association for Cancer Research (AACR), 2007 |
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American Association for Cancer Research (AACR), 2007 |
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1078-0432 1557-3265 |
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1078-0432 1557-3265 |
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2007 |
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Clinical Cancer Research |
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| title |
Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models |
| title_unstemmed |
Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models |
| title_full |
Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models |
| title_fullStr |
Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models |
| title_full_unstemmed |
Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models |
| title_short |
Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models |
| title_sort |
imaging and modulating antisense microdistribution in solid human xenograft tumor models |
| topic |
Cancer Research Oncology |
| url |
http://dx.doi.org/10.1158/1078-0432.ccr-06-3085 |
| publishDate |
2007 |
| physical |
5935-5941 |
| description |
<jats:title>Abstract</jats:title>
<jats:p>Purpose: The tumor microenvironment is complex and heterogeneous, populated by tortuous irregular vasculature, hypoxic cells, and necrotic regions. These factors can all contribute to the biodistribution difficulties encountered by most cancer therapeutic agents. Antisense oligodeoxynucleotides (ASO) are a class of therapeutics where limited information is available about their distribution within a solid tumor environment.</jats:p>
<jats:p>Experimental Design: To assess ASO distribution, a fluorescein-labeled phosphorothionated ASO based on the G3139 mismatch control was injected systemically (i.v.) into tumor-bearing severe combined immunodeficient mice. Hoechst 33342 was injected i.v. to visualize active vasculature. Unstained sections were imaged through tiled fluorescence stereomicroscopy and then quantitated using novel algorithms. Tumor sections from four human tumor models were examined (CaSki, DU-145, C666-1, and C15) for hypoxia, apoptosis/necrosis, and morphology.</jats:p>
<jats:p>Results: For all four tumors, ASO accumulated within regions of hypoxia, necrosis, and apoptosis. Scatter plots of ASO versus active vasculature generated for each individual tumor revealed a consistent pattern of distribution of the ASO within each model. In C666-1 xenografts, the slopes of these scatter plots were significantly reduced from 0.41 to 0.16 when pretreated with the antivascular agent ZD6126 48 h before ASO injection. This was accompanied by the formation of large disseminated necrotic regions in the tumor, along with a 13.1 mmHg reduction in interstitial fluid pressure.</jats:p>
<jats:p>Conclusions: These data suggest the possibility that these algorithms might offer a generalizable and objective methodology to describe the distribution of molecular therapeutic agents within a tumor microenvironment and to quantitatively assess distribution changes in response to combination therapies.</jats:p> |
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| author | Mocanu, Joseph D., Yip, Kenneth W., Skliarenko, Julia, Shi, Wei, Busson, Pierre, Lo, Kwok-Wai, Bastianutto, Carlo, Liu, Fei-Fei |
| author_facet | Mocanu, Joseph D., Yip, Kenneth W., Skliarenko, Julia, Shi, Wei, Busson, Pierre, Lo, Kwok-Wai, Bastianutto, Carlo, Liu, Fei-Fei, Mocanu, Joseph D., Yip, Kenneth W., Skliarenko, Julia, Shi, Wei, Busson, Pierre, Lo, Kwok-Wai, Bastianutto, Carlo, Liu, Fei-Fei |
| author_sort | mocanu, joseph d. |
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| description | <jats:title>Abstract</jats:title> <jats:p>Purpose: The tumor microenvironment is complex and heterogeneous, populated by tortuous irregular vasculature, hypoxic cells, and necrotic regions. These factors can all contribute to the biodistribution difficulties encountered by most cancer therapeutic agents. Antisense oligodeoxynucleotides (ASO) are a class of therapeutics where limited information is available about their distribution within a solid tumor environment.</jats:p> <jats:p>Experimental Design: To assess ASO distribution, a fluorescein-labeled phosphorothionated ASO based on the G3139 mismatch control was injected systemically (i.v.) into tumor-bearing severe combined immunodeficient mice. Hoechst 33342 was injected i.v. to visualize active vasculature. Unstained sections were imaged through tiled fluorescence stereomicroscopy and then quantitated using novel algorithms. Tumor sections from four human tumor models were examined (CaSki, DU-145, C666-1, and C15) for hypoxia, apoptosis/necrosis, and morphology.</jats:p> <jats:p>Results: For all four tumors, ASO accumulated within regions of hypoxia, necrosis, and apoptosis. Scatter plots of ASO versus active vasculature generated for each individual tumor revealed a consistent pattern of distribution of the ASO within each model. In C666-1 xenografts, the slopes of these scatter plots were significantly reduced from 0.41 to 0.16 when pretreated with the antivascular agent ZD6126 48 h before ASO injection. This was accompanied by the formation of large disseminated necrotic regions in the tumor, along with a 13.1 mmHg reduction in interstitial fluid pressure.</jats:p> <jats:p>Conclusions: These data suggest the possibility that these algorithms might offer a generalizable and objective methodology to describe the distribution of molecular therapeutic agents within a tumor microenvironment and to quantitatively assess distribution changes in response to combination therapies.</jats:p> |
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| imprint | American Association for Cancer Research (AACR), 2007 |
| imprint_str_mv | American Association for Cancer Research (AACR), 2007 |
| institution | DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161, DE-Gla1, DE-Zi4 |
| issn | 1078-0432, 1557-3265 |
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| last_indexed | 2024-03-01T14:22:41.417Z |
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| spelling | Mocanu, Joseph D. Yip, Kenneth W. Skliarenko, Julia Shi, Wei Busson, Pierre Lo, Kwok-Wai Bastianutto, Carlo Liu, Fei-Fei 1078-0432 1557-3265 American Association for Cancer Research (AACR) Cancer Research Oncology http://dx.doi.org/10.1158/1078-0432.ccr-06-3085 <jats:title>Abstract</jats:title> <jats:p>Purpose: The tumor microenvironment is complex and heterogeneous, populated by tortuous irregular vasculature, hypoxic cells, and necrotic regions. These factors can all contribute to the biodistribution difficulties encountered by most cancer therapeutic agents. Antisense oligodeoxynucleotides (ASO) are a class of therapeutics where limited information is available about their distribution within a solid tumor environment.</jats:p> <jats:p>Experimental Design: To assess ASO distribution, a fluorescein-labeled phosphorothionated ASO based on the G3139 mismatch control was injected systemically (i.v.) into tumor-bearing severe combined immunodeficient mice. Hoechst 33342 was injected i.v. to visualize active vasculature. Unstained sections were imaged through tiled fluorescence stereomicroscopy and then quantitated using novel algorithms. Tumor sections from four human tumor models were examined (CaSki, DU-145, C666-1, and C15) for hypoxia, apoptosis/necrosis, and morphology.</jats:p> <jats:p>Results: For all four tumors, ASO accumulated within regions of hypoxia, necrosis, and apoptosis. Scatter plots of ASO versus active vasculature generated for each individual tumor revealed a consistent pattern of distribution of the ASO within each model. In C666-1 xenografts, the slopes of these scatter plots were significantly reduced from 0.41 to 0.16 when pretreated with the antivascular agent ZD6126 48 h before ASO injection. This was accompanied by the formation of large disseminated necrotic regions in the tumor, along with a 13.1 mmHg reduction in interstitial fluid pressure.</jats:p> <jats:p>Conclusions: These data suggest the possibility that these algorithms might offer a generalizable and objective methodology to describe the distribution of molecular therapeutic agents within a tumor microenvironment and to quantitatively assess distribution changes in response to combination therapies.</jats:p> Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models Clinical Cancer Research |
| spellingShingle | Mocanu, Joseph D., Yip, Kenneth W., Skliarenko, Julia, Shi, Wei, Busson, Pierre, Lo, Kwok-Wai, Bastianutto, Carlo, Liu, Fei-Fei, Clinical Cancer Research, Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models, Cancer Research, Oncology |
| title | Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models |
| title_full | Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models |
| title_fullStr | Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models |
| title_full_unstemmed | Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models |
| title_short | Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models |
| title_sort | imaging and modulating antisense microdistribution in solid human xenograft tumor models |
| title_unstemmed | Imaging and Modulating Antisense Microdistribution in Solid Human Xenograft Tumor Models |
| topic | Cancer Research, Oncology |
| url | http://dx.doi.org/10.1158/1078-0432.ccr-06-3085 |