Preclinical Models of Multiple Myeloma

“Preclinical Models of Multiple Myeloma” Introduction and Background Multiple myeloma is a clonal B cell malignancy characterized by the accumulation of terminally differentiated, antibody-producing plasma cells in the bone marrow that is invasive and drug resistant. Patients are generally asymptomatic until very late state disease. There are few preclinical models […]

MM.1S: A Model for Multiple Myeloma

Mean Total Tumor Burden BLI Signal In SCID beige mice, the median tumor volume doubling time is ~2 days (Figure 3), and median time to morbidity/mortality endpoint is 35-45 days. To further optimize the MM.1S-pMMP-LucNeo model, we characterized growth in the NSG mouse strain which shows more aggressive disease onset […]

Image Analysis at MI Bioresearch

Analysis of biomedical imaging data is no less a task than the image acquisition itself. Due to the complex nature of such data and variability across different subjects, information extraction has largely remained a time-consuming process. Vendors of imaging instruments and specialty software offer a variety of tools; however, a user still needs to work […]

Preclinical Success to Clinical Failure: Do We Have a Model Problem or an Endpoint Problem?

As the AACR (American Association for Cancer Research) Annual Meeting is fast approaching, many industry and academic scientists are busy preparing talks and posters for what they hope will be the next new wave in cancer therapy or the next “new and improved” preclinical model. However, while these may be long shots, it’s the scientific […]

Colo-205 as a Translational Imaging Model for Colorectal Cancer

As mentioned in our HT-29 Model Spotlight last October, colorectal cancer (CRC) is the second leading cause of cancer-related deaths in the United States for men and women combined. The death rate from CRC has been declining over the past several decades and there are now more than one million CRC survivors in the United […]

PC-3M-Luc-C6 – A Model for Prostate Carcinoma

Orthotopic Modeling In an effort to address this unmet need, MI Bioresearch has developed an orthotopic and a metastatic prostate model, PC-3M-Luc-C6. This cell line has been transfected with luciferase, which allows for disease and response monitoring through bioluminescence imaging (BLI). The orthotopic model is implanted directly into the prostate […]

Measuring Extracellular pH Within Tumors Using CEST MRI

pH is one of the key microenvironmental factors in the development of tumors. Tumor cells are often viewed as high lactate and H+ producers.1 Extracellular acidosis represents a threat to cell survival by modifying the intracellular pH (pHi), wherein a 0.1 pHi variation can disrupt multiple biological functions.2 Measurements of tumor extracellular pH (pHe) may […]

Longitudinal Evaluation of Orthotopic Lung Tumors With Imaging

Clinical imaging technologies have been vital for detecting and following disease progression/regression for many years, as examples, Computed Tomography (CT) can measure tumor volume over time and Positron Emission Tomography (PET) can measure metabolic activity within the tumors. At MI Bioresearch we have been utilizing preclinical imaging technologies for over […]

786-O (pMMP-LucNeo) – A Model for Renal Cell Carcinoma

In an effort to address this unmet need, MI Bioresearch has developed an orthotopic RCC model, 786-O (pMMP-LucNeo) through implantation into the sub-renal capsule. This cell line has been transfected with luciferase, which allows for disease and response monitoring through bioluminescence imaging (BLI). In 786-O tumor bearing mice, we evaluated […]

Leveraging the Clinical Power of MRI in Preclinical Liver Tumor Imaging

The liver is an ideal organ for magnetic resonance imaging (MRI) due to its size, plus the inherent contrast it enables compared to other tissues and lesions; this results from the high iron content which acts as a natural MRI contrast agent. For such reasons, liver tumor MRI is a major area of clinical and […]

Approaches for Preclinical Evaluation of Ovarian Cancer

As many patients with ovarian cancer develop peritoneal ascites, one standard preclinical method is to deliver these cell lines intraperitoneally (IP) to mimic this disease state. With our luciferase expressing lines we are able to track and monitor disease establishment and progression with BLI and report out quantitative measurements of […]

Evaluation of the Immune Response Following Treatment with Anti-CTLA-4 Antibody, Radiation Therapy, or the Combination in Murine Model of Breast Cancer

Breast cancers are considered poorly immunogenic tumors, however, several approaches utilizing immunotherapies are being undertaken in the clinic to evaluate their potential for improving outcomes. Radiation therapy (RT) is a highly utilized clinical treatment modality in breast cancer. Radiation is known to modify the tumor microenvironment, induce cytokines and chemokines, and has been shown to […]

Access the Power of Focal Beam Radiation Using Xstrahl’s SARRP

Xstrahl’s SARRP (Small Animal Radiation Research Platform), incorporates CT imaging with precise radiation delivery to enable researchers to pinpoint an exact anatomical target. This small animal irradiator can then deliver single or multiple beams of radiation to the target with the upmost accuracy, matching the clinical techniques used in oncology […]

Comparison of Bioluminescence and MR Imaging to Evaluate Orthotopic Glioma Models

Glioblastoma multiforme (GBM) (also called glioblastoma) is a fast-growing glioma that develops from star-shaped glial cells (astrocytes and oligodendrocytes) that support the health of the nerve cells within the brain. These tumors are usually highly malignant because the cells reproduce quickly and they are supported by a large network of blood vessels. GBM is the […]

PET Quantification of Receptor Occupancy

The use of PET imaging to detect and quantify receptor occupancy (RO) has become a translational standard in CNS discovery and clinical trials. For example, 18F radiolabeling of targeted small molecules enables a PET tracer-based PD biomarker. The tracer can be used for dynamic, non-invasive quantification of percentage RO. For relevant targets, rodent models can […]

GL261: Syngeneic Murine Glioma Model

GL261 is one of the most frequently used syngeneic murine glioma models available. We capitalize on our state-of-the-art imaging capabilities to further interrogate the pharmacology of this model by utilizing a GL261 cell line that expresses luciferase (GL261-luc2, Caliper Life Sciences). This allows for longitudinal, in vivo visualization of the […]

Precision Imaging of Antibody Biodistribution in vivo With Zirconium-89 PET

Zirconium-89 (89Zr) has revolutionized discovery and translation of Ab (and Ab fragment) therapeutics via PET biodistribution imaging.  With standard, straightforward labeling chemistry, 89Zr provides unprecedented specificity and sensitivity of PET Ab detection (to pM levels).  At MI Bioresearch we use 89Zr PET as a platform assay for in vivo quantification of: Ab targeting precision Off […]

Quantifying in vivo Biodistribution and Kinetics of Your Biologic or Nanomaterial

With the ability to provide non-invasive, three dimensional, longitudinal, and quantitative data—PET, SPECT, and fluorescence imaging (FMT) enable translational imaging of: Biodistribution Targeting Kinetics Clearance Pathways In vivo biodistribution imaging applications are now critical assays for biologics characterization for discovery screening, lead candidate selection/optimization and safety. At MI Bioresearch (MI) we combine highly sensitive PET, SPECT, […]