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  1. Article: Should clinical complications affect USDA pain categories? Concur with Covelli.

    Portnoy, Lisa / Bur, Monica

    Lab animal

    2007  Volume 36, Issue 10, Page(s) 13–14

    MeSH term(s) Animal Care Committees ; Animal Husbandry/legislation & jurisprudence ; Animal Welfare/legislation & jurisprudence ; Animals ; Animals, Laboratory/injuries ; Disease Models, Animal ; Laboratory Animal Science/legislation & jurisprudence ; Pain/classification ; Pain/etiology ; Pain/physiopathology ; Rabbits ; Research Design ; Tibial Fractures/complications ; Tibial Fractures/physiopathology ; Tibial Fractures/rehabilitation
    Language English
    Publishing date 2007-11
    Publishing country United States
    Document type Journal Article
    ISSN 0093-7355
    ISSN 0093-7355
    DOI 10.1038/laban1107-13b
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Rhodamine-RCA in vivo labeling guided laser capture microdissection of cancer functional angiogenic vessels in a murine squamous cell carcinoma mouse model

    Bur Monica / Trimble Cameron / Xie Jianwu / Hunter Finie / Li King CP

    Molecular Cancer, Vol 5, Iss 1, p

    2006  Volume 5

    Abstract: Abstract Background Cancer growth, invasion and metastasis are highly related to tumor-associated neovasculature. The presence and progression of endothelial cells in cancer is chaotic, unorganized, and angiogenic vessels are less functional. Therefore, ... ...

    Abstract Abstract Background Cancer growth, invasion and metastasis are highly related to tumor-associated neovasculature. The presence and progression of endothelial cells in cancer is chaotic, unorganized, and angiogenic vessels are less functional. Therefore, not all markers appearing on the chaotic endothelial cells are accessible if a drug is given through the vascular route. Identifying endothelial cell markers from functional cancer angiogenic vessels will indicate the accessibility and potential efficacy of vascular targeted therapies. Results In order to quickly and effectively identify endothelial cell markers on the functional and accessible tumor vessels, we developed a novel technique by which tumor angiogenic vessels are labeled in vivo followed by Laser Capture Microdissection of microscopically isolated endothelial cells for genomic screening. Female C3H mice (N = 5) with established SCCVII tumors were treated with Rhodamine-RCA lectin by tail vein injection, and after fluorescence microscopy showed a successful vasculature staining, LCM was then performed on frozen section tissue using the PixCell II instrument with CapSure HS caps under the Rhodamine filter. By this approach, the fluorescent angiogenic endothelial cells were successfully picked up. As a result, the total RNA concentration increased from an average of 33.4 ng/ul +/- 24.3 (mean +/- S.D.) to 1913.4 ng/ul +/- 164. Relatively pure RNA was retrieved from both endothelial and epithelial cells as indicated by the 260/280 ratios (range 2.22–2.47). RT-PCR and gene electrophoresis successfully detected CD31 and Beta-Actin molecules with minimal Keratin 19 expression, which served as the negative control. Conclusion Our present study demonstrates that in vivo Rhodamine RCA angiogenic vessel labeling provided a practical approach to effectively guide functional endothelial cell isolation by laser capture microdissection with fluorescent microscopy, resulting in high quality RNA and pure samples of endothelial cells pooled for detecting genomic expression.
    Keywords Neoplasms. Tumors. Oncology. Including cancer and carcinogens ; RC254-282 ; Internal medicine ; RC31-1245 ; Medicine ; R ; DOAJ:Oncology ; DOAJ:Medicine (General) ; DOAJ:Health Sciences
    Subject code 610
    Language English
    Publishing date 2006-02-01T00:00:00Z
    Publisher BioMed Central
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Rhodamine-RCA in vivo labeling guided laser capture microdissection of cancer functional angiogenic vessels in a murine squamous cell carcinoma mouse model.

    Hunter, Finie / Xie, Jianwu / Trimble, Cameron / Bur, Monica / Li, King C P

    Molecular cancer

    2006  Volume 5, Page(s) 5

    Abstract: Background: Cancer growth, invasion and metastasis are highly related to tumor-associated neovasculature. The presence and progression of endothelial cells in cancer is chaotic, unorganized, and angiogenic vessels are less functional. Therefore, not all ...

    Abstract Background: Cancer growth, invasion and metastasis are highly related to tumor-associated neovasculature. The presence and progression of endothelial cells in cancer is chaotic, unorganized, and angiogenic vessels are less functional. Therefore, not all markers appearing on the chaotic endothelial cells are accessible if a drug is given through the vascular route. Identifying endothelial cell markers from functional cancer angiogenic vessels will indicate the accessibility and potential efficacy of vascular targeted therapies.
    Results: In order to quickly and effectively identify endothelial cell markers on the functional and accessible tumor vessels, we developed a novel technique by which tumor angiogenic vessels are labeled in vivo followed by Laser Capture Microdissection of microscopically isolated endothelial cells for genomic screening. Female C3H mice (N = 5) with established SCCVII tumors were treated with Rhodamine-RCA lectin by tail vein injection, and after fluorescence microscopy showed a successful vasculature staining, LCM was then performed on frozen section tissue using the PixCell II instrument with CapSure HS caps under the Rhodamine filter. By this approach, the fluorescent angiogenic endothelial cells were successfully picked up. As a result, the total RNA concentration increased from an average of 33.4 ng/ul +/- 24.3 (mean +/- S.D.) to 1913.4 ng/ul +/- 164. Relatively pure RNA was retrieved from both endothelial and epithelial cells as indicated by the 260/280 ratios (range 2.22-2.47). RT-PCR and gene electrophoresis successfully detected CD31 and Beta-Actin molecules with minimal Keratin 19 expression, which served as the negative control.
    Conclusion: Our present study demonstrates that in vivo Rhodamine RCA angiogenic vessel labeling provided a practical approach to effectively guide functional endothelial cell isolation by laser capture microdissection with fluorescent microscopy, resulting in high quality RNA and pure samples of endothelial cells pooled for detecting genomic expression.
    MeSH term(s) Animals ; Base Sequence ; Blood Vessels/metabolism ; Blood Vessels/pathology ; Carcinoma, Squamous Cell/blood supply ; Carcinoma, Squamous Cell/genetics ; Carcinoma, Squamous Cell/pathology ; Cell Line, Tumor ; Cell Separation ; Endothelial Cells/metabolism ; Endothelial Cells/pathology ; Female ; Fluorescent Dyes ; Lasers ; Mice ; Mice, Inbred C3H ; Microdissection/methods ; Molecular Sequence Data ; Neoplasm Transplantation ; Neovascularization, Pathologic/pathology ; Plant Lectins ; Rhodamines ; Staining and Labeling
    Chemical Substances Fluorescent Dyes ; Plant Lectins ; Rhodamines ; Ricinus communis agglutinin-1
    Language English
    Publishing date 2006-02-03
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Intramural
    ISSN 1476-4598
    ISSN (online) 1476-4598
    DOI 10.1186/1476-4598-5-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Synthesis, in vitro, and in vivo characterization of an integrin alpha(v)beta(3)-targeted molecular probe for optical imaging of tumor.

    Burnett, Christopher A / Xie, Jianwu / Quijano, Jade / Shen, Zhimin / Hunter, Finie / Bur, Monica / Li, King C P / Danthi, S Narasimhan

    Bioorganic & medicinal chemistry

    2005  Volume 13, Issue 11, Page(s) 3763–3771

    Abstract: Integrin alpha(v)beta(3) is a widely-recognized target for the development of targeted molecular probes for imaging pathological conditions. alpha(v)beta(3) is a cell-surface receptor protein that is upregulated in various pathological conditions ... ...

    Abstract Integrin alpha(v)beta(3) is a widely-recognized target for the development of targeted molecular probes for imaging pathological conditions. alpha(v)beta(3) is a cell-surface receptor protein that is upregulated in various pathological conditions including osteoporosis, rheumatoid arthritis, macular degeneration, and cancer. The synthesis of an alpha(v)beta(3)-targeted optical probe 7 from compound 1, and its in vitro and in vivo characterization is described. A series of aliphatic carbamate derivatives of the potent non-peptide integrin antagonist 1 was synthesized and the binding affinity to alpha(v)beta(3) was determined in both enzyme linked immunosorbent assay (ELISA) and cell adhesion inhibition assays. The hydrophobic carbamate-linked appendages improved the binding affinity of the parent compound for alpha(v)beta(3) by 2-20 times. A Boc-protected neopentyl derivative in the series is shown to have the best binding affinity to alpha(v)beta(3) (IC(50)=0.72 nM) when compared to compound 1 as well as to c-RGDfV. Optical probe 7 utilizes the neopentyl linker and demonstrates increased binding affinity and significant tumor cell uptake in vitro as well as specific tumor accumulation and retention in vivo. These results illustrate the potential of employing integrin-targeted molecular probes based on 1 to image a multitude of diseases associated with alpha(v)beta(3) overexpression.
    MeSH term(s) Animals ; Cell Adhesion ; Enzyme-Linked Immunosorbent Assay ; Humans ; Integrin alphaVbeta3/chemistry ; Magnetic Resonance Spectroscopy ; Mass Spectrometry ; Microscopy, Fluorescence ; Molecular Probes ; Neoplasm Transplantation ; Neoplasms/pathology ; Spectrophotometry, Infrared ; Tumor Cells, Cultured
    Chemical Substances Integrin alphaVbeta3 ; Molecular Probes
    Language English
    Publishing date 2005-06-01
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 1161284-8
    ISSN 1464-3391 ; 0968-0896
    ISSN (online) 1464-3391
    ISSN 0968-0896
    DOI 10.1016/j.bmc.2005.03.024
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Pulsed high-intensity focused ultrasound enhances systemic administration of naked DNA in squamous cell carcinoma model: initial experience.

    Dittmar, Kristin M / Xie, Jianwu / Hunter, Finie / Trimble, Cameron / Bur, Monica / Frenkel, Victor / Li, King C P

    Radiology

    2005  Volume 235, Issue 2, Page(s) 541–546

    Abstract: Purpose: To determine whether exposures to pulsed high-intensity focused ultrasound can enhance local delivery and expression of a reporter gene, administered with systemic injection of naked DNA, in tumors in mice.: Materials and methods: The study ... ...

    Abstract Purpose: To determine whether exposures to pulsed high-intensity focused ultrasound can enhance local delivery and expression of a reporter gene, administered with systemic injection of naked DNA, in tumors in mice.
    Materials and methods: The study was performed according to an approved animal protocol and in compliance with guidelines of the institutional animal care and use committee. Squamous cell carcinoma (SCC7) tumors were induced subcutaneously in both flanks of female C3H mice (n = 3) and allowed to grow to average size of 0.4 cm(3). In each mouse, one tumor was exposed to pulsed high-intensity focused ultrasound while a second tumor served as a control. Immediately after ultrasound exposure, a solution containing a cytomegalovirus-green fluorescent protein (GFP) reporter gene construct was injected intravenously via the tail vein. The mouse was sacrificed 24 hours later. Tissue specimens were viewed with fluorescence microscopy to determine the presence of GFP expression, and Western blot analysis was performed, at which signal intensities of expressed GFP were quantitated. A paired Student t test was used to compare mean values in controls with those in treated tumors. Histologic analyses were performed with specific techniques (hematoxylin-eosin staining, terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end labeling) to determine whether tumor cells had been damaged by ultrasound exposure.
    Results: GFP expression was present in all sections of tumors that received ultrasound exposure but not in control tumors. Results of signal intensity measurement at Western blot analysis showed expressed GFP to be nine times greater in ultrasound-exposed tumors (160.2 +/- 24.5 [standard deviation]) than in controls (17.4 +/- 11.8) (P = .004, paired Student t test). Comparison of histologic sections from treated tumors with those from controls revealed no destructive effects from ultrasound exposure.
    Conclusion: Local exposure to pulsed high-intensity focused ultrasound in tumors can enhance the delivery and expression of systemically injected naked DNA.
    MeSH term(s) Animals ; Blotting, Western ; Carcinoma, Squamous Cell/genetics ; Carcinoma, Squamous Cell/pathology ; Cell Line, Tumor ; Cytomegalovirus/genetics ; DNA, Recombinant/administration & dosage ; Female ; Gene Expression/physiology ; Gene Transfer Techniques ; Genes, Reporter/genetics ; Genetic Therapy ; Green Fluorescent Proteins/genetics ; In Situ Nick-End Labeling ; Injections, Intravenous ; Mice ; Mice, Inbred C3H ; Microscopy, Fluorescence ; Neoplasms, Experimental/genetics ; Neoplasms, Experimental/pathology ; Soft Tissue Neoplasms/genetics ; Soft Tissue Neoplasms/pathology ; Subcutaneous Tissue/pathology ; Ultrasonic Therapy
    Chemical Substances DNA, Recombinant ; Green Fluorescent Proteins (147336-22-9)
    Language English
    Publishing date 2005-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 80324-8
    ISSN 1527-1315 ; 0033-8419
    ISSN (online) 1527-1315
    ISSN 0033-8419
    DOI 10.1148/radiol.2352040254
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Pulsed-high intensity focused ultrasound and low temperature-sensitive liposomes for enhanced targeted drug delivery and antitumor effect.

    Dromi, Sergio / Frenkel, Victor / Luk, Alfred / Traughber, Bryan / Angstadt, Mary / Bur, Monica / Poff, Jason / Xie, Jianwu / Libutti, Steven K / Li, King C P / Wood, Bradford J

    Clinical cancer research : an official journal of the American Association for Cancer Research

    2007  Volume 13, Issue 9, Page(s) 2722–2727

    Abstract: Purpose: To determine if pulsed-high intensity focused ultrasound (HIFU) could effectively serve as a source of hyperthermia with thermosensitive liposomes to enhance delivery and efficacy of doxorubicin in tumors.: Experimental design: Comparisons ... ...

    Abstract Purpose: To determine if pulsed-high intensity focused ultrasound (HIFU) could effectively serve as a source of hyperthermia with thermosensitive liposomes to enhance delivery and efficacy of doxorubicin in tumors.
    Experimental design: Comparisons in vitro and in vivo were carried out between non-thermosensitive liposomes (NTSL) and low temperature-sensitive liposomes (LTSL). Liposomes were incubated in vitro over a range of temperatures and durations, and the amount of doxorubicin released was measured. For in vivo experiments, liposomes and free doxorubicin were injected i.v. in mice followed by pulsed-HIFU exposures in s.c. murine adenocarcinoma tumors at 0 and 24 h after administration. Combinations of the exposures and drug formulations were evaluated for doxorubicin concentration and growth inhibition in the tumors.
    Results: In vitro incubations simulating the pulsed-HIFU thermal dose (42 degrees C for 2 min) triggered release of 50% of doxorubicin from the LTSLs; however, no detectable release from the NTSLs was observed. Similarly, in vivo experiments showed that pulsed-HIFU exposures combined with the LTSLs resulted in more rapid delivery of doxorubicin as well as significantly higher i.t. concentration when compared with LTSLs alone or NTSLs, with or without exposures. Combining the exposures with the LTSLs also significantly reduced tumor growth compared with all other groups.
    Conclusions: Combining low-temperature heat-sensitive liposomes with noninvasive and nondestructive pulsed-HIFU exposures enhanced the delivery of doxorubicin and, consequently, its antitumor effects. This combination therapy could potentially produce viable clinical strategies for improved targeting and delivery of drugs for treatment of cancer and other diseases.
    MeSH term(s) Animals ; Cell Line, Tumor ; Doxorubicin/administration & dosage ; Drug Delivery Systems/methods ; Hyperthermia, Induced/methods ; Liposomes ; Mice ; Neoplasms/drug therapy ; Temperature ; Ultrasonics
    Chemical Substances Liposomes ; Doxorubicin (80168379AG)
    Language English
    Publishing date 2007-05-02
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Intramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 1225457-5
    ISSN 1557-3265 ; 1078-0432
    ISSN (online) 1557-3265
    ISSN 1078-0432
    DOI 10.1158/1078-0432.CCR-06-2443
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Magnetic resonance imaging and confocal microscopy studies of magnetically labeled endothelial progenitor cells trafficking to sites of tumor angiogenesis.

    Arbab, Ali S / Pandit, Sunil D / Anderson, Stasia A / Yocum, Gene T / Bur, Monica / Frenkel, Victor / Khuu, Hanh M / Read, Elizabeth J / Frank, Joseph A

    Stem cells (Dayton, Ohio)

    2006  Volume 24, Issue 3, Page(s) 671–678

    Abstract: Unlabelled: AC133 cells, a subpopulation of CD34+ hematopoietic stem cells, can transform into endothelial cells that may integrate into the neovasculature of tumors or ischemic tissue. Most current imaging modalities do not allow monitoring of early ... ...

    Abstract Unlabelled: AC133 cells, a subpopulation of CD34+ hematopoietic stem cells, can transform into endothelial cells that may integrate into the neovasculature of tumors or ischemic tissue. Most current imaging modalities do not allow monitoring of early migration and incorporation of endothelial progenitor cells (EPCs) into tumor neovasculature. The goals of this study were to use magnetic resonance imaging (MRI) to track the migration and incorporation of intravenously injected, magnetically labeled EPCs into the blood vessels in a rapidly growing flank tumor model and to determine whether the pattern of EPC incorporation is related to the time of injection or tumor size.
    Materials and methods: EPCs labeled with ferumoxide-protamine sulfate (FePro) complexes were injected into mice bearing xenografted glioma, and MRI was obtained at different stages of tumor development and size.
    Results: Migration and incorporation of labeled EPCs into tumor neovasculature were detected as low signal intensity on MRI at the tumor periphery as early as 3 days after EPC administration in preformed tumors. However, low signal intensities were not observed in tumors implanted at the time of EPC administration until tumor size reached 1 cm at 12 to 14 days. Prussian blue staining showed iron-positive cells at the sites corresponding to low signal intensity on MRI. Confocal microscopy showed incorporation into the neovasculature, and immunohistochemistry clearly demonstrated the transformation of the administered EPCs into endothelial cells.
    Conclusion: MRI demonstrated the incorporation of FePro-labeled human CD34+/AC133+ EPCs into the neovasculature of implanted flank tumors.
    MeSH term(s) AC133 Antigen ; Animals ; Antigens, CD ; Antigens, CD34 ; Cell Line ; Cell Movement ; Contrast Media/pharmacology ; Dextrans ; Female ; Ferrosoferric Oxide ; Glioma/metabolism ; Glioma/pathology ; Glycoproteins ; Hematopoietic Stem Cells/metabolism ; Hematopoietic Stem Cells/pathology ; Humans ; Iron/pharmacology ; Magnetic Resonance Angiography/methods ; Magnetite Nanoparticles ; Mice ; Mice, Inbred BALB C ; Mice, Nude ; Microscopy, Confocal/methods ; Neoplasms, Experimental/metabolism ; Neoplasms, Experimental/pathology ; Neovascularization, Pathologic/metabolism ; Neovascularization, Pathologic/pathology ; Oxides/pharmacology ; Peptides
    Chemical Substances AC133 Antigen ; Antigens, CD ; Antigens, CD34 ; Contrast Media ; Dextrans ; Glycoproteins ; Magnetite Nanoparticles ; Oxides ; PROM1 protein, human ; Peptides ; Prom1 protein, mouse ; Iron (E1UOL152H7) ; ferumoxides (G6N3J05W84) ; Ferrosoferric Oxide (XM0M87F357)
    Language English
    Publishing date 2006-03
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Intramural
    ZDB-ID 1143556-2
    ISSN 1549-4918 ; 1066-5099
    ISSN (online) 1549-4918
    ISSN 1066-5099
    DOI 10.1634/stemcells.2005-0017
    Database MEDical Literature Analysis and Retrieval System OnLINE

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