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Spatiotemporal local and abscopal cell death and immune responses to histotripsy focused ultrasound tumor ablation

ABSTRACT: Histotripsy is a novel focused ultrasound tumor ablation modality with potent immunostimulatory effects. To measure the spatiotemporal kinetics of local and abscopal responses to histotripsy, C57BL/6 mice bearing bilateral flank B16 melanoma or Hepa1-6 hepatocellular carcinoma tumors were treated with unilateral sham or partial histotripsy. Treated and Controltralateral untreated (abscopal) tumors were analyzed using multicolor immunofluorescence, digital spatial profiling, RNA sequencing (RNASeq), and flow cytometry.

ORGANISM(S): Mus musculus

PROVIDER: GSE221448 | GEO | 2023/01/12

REPOSITORIES: GEO

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Gene expression profie at single cell level of lung cells in healthy rats and rats with pulmonary hypertension treated with sham-stimulation or ultrasound

Project description:Focused ultrasound of the spleen is an emerging therapeutic modality and recent reports have shown efficacy in reducing inflammation. We used scRNA seq to identify the gene expression changes in lungs of healthy animals, animals with pulmonary hypertension treated with focused ultrasound of the spleen or sham stimulation.

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Single-cell sequencing of brain macrophages after focused-ultrasound blood-brain barrier opening

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2023-06-17 | GSE198707 | GEO

Dynamic Ultrasound Molecular Targeted Imaging of Senescencein Evaluation of Lapatinib Resistance in HER2 Positive Breast Cancer

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Immunomodulation of Intracranial Melanoma in Response to Blood-Tumor Barrier Opening with Focused Ultrasound - Bulk RNA seq

Project description:Activating microbubbles (MBs) with focused ultrasound (FUS) for blood-brain (BBB) and blood-tumor barrier (BTB) opening permits targeted therapeutic delivery. While the effects of FUS-mediated BBB opening have been investigated for normal brain tissue, no such studies exist for intracranial tumors. As this technology advances into clinical immunotherapy trials, it will be crucial to understand how FUS modulates the tumor immune microenvironment. Here, bulk RNA sequencing revealed that FUS BTB/BBB opening (1 MHz, 0.5 MPa peak-negative pressure) of intracranial B16F1cOVA tumors increases the expression of genes related to proinflammatory cytokine and chemokine signaling, pattern recognition receptor signaling, and antigen processing and presentation. Flow cytometry revealed increased maturation (i.e. CD86) of dendritic cells (DCs) in the meninges and altered antigen loading of DCs in both the tumor and meninges. For DCs in tumor draining lymph nodes, FUS had no effect on maturation and elicited only a trend towards increased presentation of tumor-derived peptide by MHC. Neither tumor endothelial cell adhesion molecule expression nor homing of activated T cells was affected by FUS. In conclusion, FUS-mediated BTB/BBB opening elicits signatures of inflammation; however, the response is mild, transient, and unlikely to elicit a systemic response independent of administration of immune adjuvants.

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Effect of HIFU on Murine Neuroblastoma Tumors

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Transcriptomic profiling of diabetic rats treated with peripherical focused ultrasound (pFUS)

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| PRJNA808966 | ENA

Transcription profiling of human leukemia U937 cells treated with the combination of Sonazoid and ultrasound

Project description:Echo-contrast agents enhance the echogenicity of ultrasound and have been clinically used for diagonosis in current medical fields. Here, the combined effects of Sonazoid, an echo-contrast agent, and ultrasound on the gene expression in human lymphoma U937 cells were investigated using an Affymetrix GeneChip system. The cells were treated with Sonazoid (0.05%; Sonazoid only), ultrasound (0.3 W/cm2 for 1 min; ultrasound only) and the combination of Sonazoid and ultrasound (0.05% Sonazoid plus ultrasound 0.3 W/cm2 for 1 min; Sonazoid + Ultrasound) and followed by incubation for 3 h at 37Â°C. The percentage of DNA fragmentation 6 h after treatment was 5.8 Â± 1.0 (mean Â± SD, n = 3), 6.0 Â± 0.4, 13.5 Â± 1.0, and 18.3 Â± 2.3 in cells treated with control, Sonazoid only, ultrasound only and Sonazoid + Ultrasound, respectively. Of approximately 47,000 probe sets analyzed, probe sets that were differentially expressed by a factor 2.0 or greater were 40, 184 and 144 in cells treated with Sonazoid only, ultrasound only and Sonazoid + Ultrasound, respectively. Experiment Overall Design: U937 cells, a human lymphoma cell line, were treated with Sonazoid (0.05%), ultrasound (0.3 W/cm2 for 1 min) and the combination of Sonazoid and ultrasound (0.05% Sonazoid plus ultrasound 0.3 W/cm2 for 1 min) and followed by incubation for 3 h at 37Â°C. Non-treated cells were served as control. Total RNA samples were prepared from the cells. Gene expression was analyzed by an Affymetrix GeneChipÂ® system with a Human Genome U133-plus 2.0 array for analysis of over 47,000 transcripts. Sample preparation for array hybridization was carried out as described in the manufacturerâ??s instructions.

2009-05-27 | E-GEOD-16118 | biostudies-arrayexpress

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2017-09-01 | E-MTAB-5251 | biostudies-arrayexpress

Identification of genes responsive to the combination of Sonazoid and ultrasound in human leukemia U937 cells

2009-05-16 | GSE16118 | GEO

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