Limits...
Development of a High-Throughput Molecular Imaging-Based Orthotopic Hepatocellular Carcinoma Model.

Hwang GL, van den Bosch MA, Kim YI, Katzenberg R, Willmann JK, Paulmurugan R, Gambhir SS, Hofmann L - Cureus (2015)

Bottom Line: In six animals, serial PET, BLI, and ultrasound imaging were performed at 10-time points in 28 days.The first metastases were detected by PET after Day 24.        We have successfully developed and validated a novel orthotopic HCC small animal model that permits longitudinal assessment of change in tumor size using molecular imaging techniques.This model permits high-throughput in vivo evaluation of image-guided therapies.

View Article: PubMed Central - HTML - PubMed

Affiliation: Radiology, Stanford University School of Medicine.

ABSTRACT
We have developed a novel orthotopic rat hepatocellular (HCC) model and have assessed the ability to use bioluminescence imaging (BLI), positron emission tomography (PET), and ultrasound for early tumor detection and monitoring of disease progression.  Briefly, rat HCC cells were stably transfected with click beetle red as a reporter gene for BLI. Tumor cells were injected under direct visualization into the left or middle lobe of the liver in 37 rats. In six animals, serial PET, BLI, and ultrasound imaging were performed at 10-time points in 28 days. The remainder of the animals underwent PET imaging at 14 days. Tumor implantation was successful in 34 of 37 animals (91.9%). In the six animals that underwent serial imaging, tumor formation was first detected with BLI on Day 4 with continued increase through Day 21, and hypermetabolic activity on PET was first noted on Days 14-15 with continued increase through Day 28. PET activity was seen on Day 14 in the 28 other animals that demonstrated tumor development. Anatomic tumor formation was detected with ultrasound at Days 10-12 with continued growth through Day 28. The first metastases were detected by PET after Day 24.        We have successfully developed and validated a novel orthotopic HCC small animal model that permits longitudinal assessment of change in tumor size using molecular imaging techniques. BLI is the most sensitive imaging method for detection of early tumor formation and growth. This model permits high-throughput in vivo evaluation of image-guided therapies.

No MeSH data available.


Related in: MedlinePlus

Quantitative representation of tumor volume from ultrasound. Serial estimates of tumor volume (mm3) were calculated from high-frequency ultrasound measurements in three dimensions, taken on Days 3, 9, 14, 16, 20, 23, and 27. Graph represents log of estimated volumes. Gray line represents average of log values; vertical bars represent standard error. No appreciable tumor was seen on Day 3 for all animals.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4494575&req=5

FIG10: Quantitative representation of tumor volume from ultrasound. Serial estimates of tumor volume (mm3) were calculated from high-frequency ultrasound measurements in three dimensions, taken on Days 3, 9, 14, 16, 20, 23, and 27. Graph represents log of estimated volumes. Gray line represents average of log values; vertical bars represent standard error. No appreciable tumor was seen on Day 3 for all animals.

Mentions: On Days 10-12, a discrete hypoechoic liver tumor was observed in all five serially imaged animals by high-frequency ultrasound with a mean maximum tumor diameter of 2.7 mm (range: 2.1-4.6). The tumors grew to a mean maximum of 11.3 mm (range 10.5-12.2) by Day 28 (Figures 9-10).


Development of a High-Throughput Molecular Imaging-Based Orthotopic Hepatocellular Carcinoma Model.

Hwang GL, van den Bosch MA, Kim YI, Katzenberg R, Willmann JK, Paulmurugan R, Gambhir SS, Hofmann L - Cureus (2015)

Quantitative representation of tumor volume from ultrasound. Serial estimates of tumor volume (mm3) were calculated from high-frequency ultrasound measurements in three dimensions, taken on Days 3, 9, 14, 16, 20, 23, and 27. Graph represents log of estimated volumes. Gray line represents average of log values; vertical bars represent standard error. No appreciable tumor was seen on Day 3 for all animals.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4494575&req=5

FIG10: Quantitative representation of tumor volume from ultrasound. Serial estimates of tumor volume (mm3) were calculated from high-frequency ultrasound measurements in three dimensions, taken on Days 3, 9, 14, 16, 20, 23, and 27. Graph represents log of estimated volumes. Gray line represents average of log values; vertical bars represent standard error. No appreciable tumor was seen on Day 3 for all animals.
Mentions: On Days 10-12, a discrete hypoechoic liver tumor was observed in all five serially imaged animals by high-frequency ultrasound with a mean maximum tumor diameter of 2.7 mm (range: 2.1-4.6). The tumors grew to a mean maximum of 11.3 mm (range 10.5-12.2) by Day 28 (Figures 9-10).

Bottom Line: In six animals, serial PET, BLI, and ultrasound imaging were performed at 10-time points in 28 days.The first metastases were detected by PET after Day 24.        We have successfully developed and validated a novel orthotopic HCC small animal model that permits longitudinal assessment of change in tumor size using molecular imaging techniques.This model permits high-throughput in vivo evaluation of image-guided therapies.

View Article: PubMed Central - HTML - PubMed

Affiliation: Radiology, Stanford University School of Medicine.

ABSTRACT
We have developed a novel orthotopic rat hepatocellular (HCC) model and have assessed the ability to use bioluminescence imaging (BLI), positron emission tomography (PET), and ultrasound for early tumor detection and monitoring of disease progression.  Briefly, rat HCC cells were stably transfected with click beetle red as a reporter gene for BLI. Tumor cells were injected under direct visualization into the left or middle lobe of the liver in 37 rats. In six animals, serial PET, BLI, and ultrasound imaging were performed at 10-time points in 28 days. The remainder of the animals underwent PET imaging at 14 days. Tumor implantation was successful in 34 of 37 animals (91.9%). In the six animals that underwent serial imaging, tumor formation was first detected with BLI on Day 4 with continued increase through Day 21, and hypermetabolic activity on PET was first noted on Days 14-15 with continued increase through Day 28. PET activity was seen on Day 14 in the 28 other animals that demonstrated tumor development. Anatomic tumor formation was detected with ultrasound at Days 10-12 with continued growth through Day 28. The first metastases were detected by PET after Day 24.        We have successfully developed and validated a novel orthotopic HCC small animal model that permits longitudinal assessment of change in tumor size using molecular imaging techniques. BLI is the most sensitive imaging method for detection of early tumor formation and growth. This model permits high-throughput in vivo evaluation of image-guided therapies.

No MeSH data available.


Related in: MedlinePlus