Recent developments of transgenic and xenograft mouse models of pancreatic cancer for translational research

2010 ◽  
Vol 6 (1) ◽  
pp. 33-48 ◽  
Author(s):  
Ute Schütte ◽  
Savita Bisht ◽  
Peter Brossart ◽  
Georg Feldmann
Keyword(s):  
Pancreatic Cancer ◽  
Translational Research ◽  
Mouse Models ◽  
Recent Developments

scholarly journals The gut microbiome of laboratory mice: considerations and best practices for translational research

2021 ◽  
Author(s):  
Aaron C. Ericsson ◽  
Craig L. Franklin
Keyword(s):  
Human Physiology ◽  
Best Practices ◽  
Gut Microbiota ◽  
Translational Research ◽  
Mouse Models ◽  
Gut Microbiome ◽  
Predictive Power ◽  
Environmental Influences ◽  
Pharmacological Intervention ◽  
Laboratory Mice

AbstractJust as the gut microbiota (GM) is now recognized as an integral mediator of environmental influences on human physiology, susceptibility to disease, and response to pharmacological intervention, so too does the GM of laboratory mice affect the phenotype of research using mouse models. Multiple experimental factors have been shown to affect the composition of the GM in research mice, as well as the model phenotype, suggesting that the GM represents a major component in experimental reproducibility. Moreover, several recent studies suggest that manipulation of the GM of laboratory mice can substantially improve the predictive power or translatability of data generated in mouse models to the human conditions under investigation. This review provides readers with information related to these various factors and practices, and recommendations regarding methods by which issues with poor reproducibility or translatability can be transformed into discoveries.

scholarly journals 453 Novel combination immunotherapy for boosting and priming immune responses in pancreatic cancer: strong anti-tumour effects with interleukin-15 and CD40 agonist treatment

2020 ◽  
Vol 8 (Suppl 3) ◽  
pp. A480-A480
Author(s):  
Jonas Van Audenaerde ◽  
Elly Marcq ◽  
Bianca von Scheidt ◽  
Ashleigh Davey ◽  
Amanda Oliver ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
T Cells ◽  
Dendritic Cells ◽  
Natural Killer ◽  
Mouse Models ◽  
Cd8 T Cells ◽  
Tumour Growth ◽  
Immune Memory ◽  
Combination Immunotherapy ◽  
Interleukin 15

BackgroundWith the poorest 5-year survival of all cancers, improving treatment for pancreatic cancer is one of the biggest challenges in cancer research. In this era of combination immunotherapies, we sought to explore the potential of combining both priming and activation of the immune system. To achieve this, we combined a CD40 agonist with interleukin-15 and tested its potential in pancreatic cancer.MethodsTwo different mouse models of pancreatic cancer were used to assess the potential of this combination regimen. Therefore, effects on tumour growth kinetics and survival were charted. Differential effects on immune signatures was investigated using RNA sequencing. Functional immune subset involvement was tested using different immune depletion experiments and multicolour flow cytometry in different relevant immune sites. Immune memory was checked using re-challenge experiments.ResultsWe demonstrated profound reduction in tumour growth and increased survival of mice with the majority of mice being cured when both agents were combined, including an unprecedented dose reduction of CD40 agonist without losing any efficacy (fig 1). RNA sequencing analysis showed involvement of natural killer cell and T cell mediated anti-tumour responses and the importance of antigen-presenting cell pathways. This combination resulted in enhanced infiltration of tumours by both cytotoxic T cells and natural killer cells, as well as a striking increase in the ratio of CD8+ T cells over T regulatory cells. We also observed a significant increase in numbers of dendritic cells in tumour draining lymph nodes, particularly CD103+ dendritic cells with cross-presentation potential. A critical role for CD8+ T cells and involvement of natural killer cells in the anti-tumour effect was highlighted. Importantly, strong immune memory was established, with an increase in memory CD8+ T cells only when both interleukin-15 and the CD40 agonist were combined.Abstract 453 Figure 1Tumour kinetics and survival in Panc02 (left) and KPC (right) pancreatic cancer mouse modelsConclusionsWe demonstrated profound synergistic anti-tumour effects upon combination of CD40 agonist and interleukin-15 treatment in mouse models of pancreatic cancer. This preclinical data supports initiation of a first-in-human clinical trial with this combination immunotherapy strategy in pancreatic cancer.

scholarly journals Experimental Models for Studying HPV-Positive and HPV-Negative Penile Cancer: New Tools for An Old Disease

Cancers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 460
Author(s):  
Beatriz Medeiros-Fonseca ◽  
Antonio Cubilla ◽  
Haissa Brito ◽  
Tânia Martins ◽  
Rui Medeiros ◽  
...  
Keyword(s):  
Mouse Models ◽  
Cell Lines ◽  
Penile Cancer ◽  
Hpv Infection ◽  
Experimental Models ◽  
In Vivo Models ◽  
Recent Developments ◽  
Key Aspects

Penile cancer is an uncommon malignancy that occurs most frequently in developing countries. Two pathways for penile carcinogenesis are currently recognized: one driven by human papillomavirus (HPV) infection and another HPV-independent route, associated with chronic inflammation. Progress on the clinical management of this disease has been slow, partly due to the lack of preclinical models for translational research. However, exciting recent developments are changing this landscape, with new in vitro and in vivo models becoming available. These include mouse models for HPV+ and HPV− penile cancer and multiple cell lines representing HPV− lesions. The present review addresses these new advances, summarizing available models, comparing their characteristics and potential uses and discussing areas that require further improvement. Recent breakthroughs achieved using these models are also discussed, particularly those developments pertaining to HPV-driven cancer. Two key aspects that still require improvement are the establishment of cell lines that can represent HPV+ penile carcinomas and the development of mouse models to study metastatic disease. Overall, the growing array of in vitro and in vivo models for penile cancer provides new and useful tools for researchers in the field and is expected to accelerate pre-clinical research on this disease.

scholarly journals Establishing an immunocompromised porcine model of human cancer for novel therapy development with pancreatic adenocarcinoma and irreversible electroporation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Alissa Hendricks-Wenger ◽  
Kenneth N. Aycock ◽  
Margaret A. Nagai-Singer ◽  
Sheryl Coutermarsh-Ott ◽  
Melvin F. Lorenzo ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Electrical Properties ◽  
Pancreatic Adenocarcinoma ◽  
Mouse Models ◽  
Tumor Tissue ◽  
Irreversible Electroporation ◽  
Human Pancreatic Cancer ◽  
Large Animal Model ◽  
Preclinical Model ◽  
Large Animal

AbstractNew therapies to treat pancreatic cancer are direly needed. However, efficacious interventions lack a strong preclinical model that can recapitulate patients’ anatomy and physiology. Likewise, the availability of human primary malignant tissue for ex vivo studies is limited. These are significant limitations in the biomedical device field. We have developed RAG2/IL2RG deficient pigs using CRISPR/Cas9 as a large animal model with the novel application of cancer xenograft studies of human pancreatic adenocarcinoma. In this proof-of-concept study, these pigs were successfully generated using on-demand genetic modifications in embryos, circumventing the need for breeding and husbandry. Human Panc01 cells injected subcutaneously into the ears of RAG2/IL2RG deficient pigs demonstrated 100% engraftment with growth rates similar to those typically observed in mouse models. Histopathology revealed no immune cell infiltration and tumor morphology was highly consistent with the mouse models. The electrical properties and response to irreversible electroporation of the tumor tissue were found to be similar to excised human pancreatic cancer tumors. The ample tumor tissue produced enabled improved accuracy and modeling of the electrical properties of tumor tissue. Together, this suggests that this model will be useful and capable of bridging the gap of translating therapies from the bench to clinical application.

TIMP1 expression underlies sex disparity in liver metastasis and survival in pancreatic cancer

2021 ◽  
Vol 218 (11) ◽  
Author(s):  
Chris D. Hermann ◽  
Benjamin Schoeps ◽  
Celina Eckfeld ◽  
Enkhtsetseg Munkhbaatar ◽  
Lukas Kniep ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Liver Metastasis ◽  
Mouse Models ◽  
Pancreatic Tumors ◽  
Primary Tumors ◽  
Increased Risk ◽  
Metastasis Development ◽  
Male Specific ◽  
Sex Disparity ◽  
Timp1 Expression

Sex disparity in cancer is so far inadequately considered, and components of its basis are rather unknown. We reveal that male versus female pancreatic cancer (PC) patients and mice show shortened survival, more frequent liver metastasis, and elevated hepatic metastasis-promoting gene expression. Tissue inhibitor of metalloproteinases 1 (TIMP1) was the secreted factor with the strongest male-biased expression in patient-derived pancreatic tumors. Male-specific up-regulation of systemic TIMP1 was demonstrated in PC mouse models and patients. Using TIMP1-competent and TIMP1-deficient PC mouse models, we established a causal role of TIMP1 in determining shortened survival and increased liver metastasis in males. Observing TIMP1 expression as a risk parameter in males led to identification of a subpopulation exhibiting increased TIMP1 levels (T1HI males) in both primary tumors and blood. T1HI males showed increased risk for liver metastasis development not only in PC but also in colorectal cancer and melanoma. This study reveals a lifestyle-independent sex disparity in liver metastasis and may open new avenues toward precision medicine.

Intraductal delivery of cytotoxic adenoviruses to the pancreas induces tumor regression in mouse models of pancreatic cancer

Pancreatology ◽  
2012 ◽  
Vol 12 (6) ◽  
pp. 539
Author(s):  
A. José ◽  
L. Sobrevals ◽  
M. Huch ◽  
J.M. Camacho Sánchez ◽  
N. Andreu ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Mouse Models ◽  
Tumor Regression

scholarly journals Mouse models of human cancer and the need for more translational research

2008 ◽  
Author(s):  
Martin Fenner
Keyword(s):  
Mouse Model ◽  
Translational Research ◽  
Synovial Sarcoma ◽  
Mouse Models ◽  
Human Disease ◽  
Human Cancer ◽  
Neuropsychiatric Disorders ◽  
International Congress

One of the opening lectures this Saturday of the International Congress of Genetics was held by Mario Capecchi. His talked was entitled Modeling human disease in the mouse: from cancer to neuropsychiatric disorders. In the first half he described his mouse model of synovial sarcoma. ...

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