Name: an oncogenic hepatocyte-induced orthotopic mouse model of hepatocellular cancer arising in the setting of hepatic inflammation and fibrosis
Uploaded: 2019-09-12T13:00:00
Description: Watch this Scientific Journal Video about An Oncogenic Hepatocyte-Induced Orthotopic Mouse Model of Hepatocellular Cancer Arising in the Setting of Hepatic Inflammation and Fibrosis at JoVE.com

This work is supported by NIH/NCI R01 CA164335-01A1 (K. F. Staveley-O&#8217;Carroll, PI) and NIH/NCI R01CA208396 (Mark Kester, Guangfu Li, Kevin F. Staveley-O&#8217;Carroll).

NOTE: All the procedure including animal subjects have been approved by the IACUC at the University of Missouri. All mice received humane care according to the criteria outlined in the &#34;Guide for the Care and Use of Laboratory Animals&#34;. The following procedure for cell isolation and inoculation should be performed in a hood. All performers should wear the standard personal protective equipment for handling of the mice and tissue.
1. Induction of Liver Fibrosis and Cirrhosis with IP Injec...

<ol>
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With this protocol, we have established a reliable and reproducible murine model of HCC that mimics human HCC initiation and progression. Clinically, many risk factors successively induce liver injury, liver fibrosis, cirrhosis and the final stage of HCC. In our protocol, IP injection of CCl4 is used to first produce liver fibrosis in wild type mice, which allows the subsequent oncogenic hepatocytes to form the tumors in the setting of liver fibrosis. We found that tumor formation occurred most successfully in...

Hepatocellular cancer (HCC) is the most rapidly increasing type of cancer in the United States (US)1,2,3. Every year, approximately 850,000 new cases are diagnosed4,5 and 700,000 patients die from this lethal disease6,7,8,9,10, making it the second-highest cause of cancer-related death worldwide. Management of HCC includes surgical resection, transplantation, ablation, chemoembolization, or systemic therapies, such as sorafenib11. Early diagnosis and management with surgical resection or transplantation have the highest overall survival benefit4. Unfortunately, the majority of patients present at a later stage and require management with ablation, chemoembolization or sorafenib12. Sorafenib, a receptor tyrosine kinase inhibitor (RTKI), was approved by the Food and Drug Administration in 2008 as the only systemic drug therapy available for treating unresectable HCC. Although the drug only provides a modest increase in overall survival, from 7.9 to 10.7 months13, it provided a new therapeutic strategy that could be utilized to manage HCC.
Manipulating the immune system to eliminate established cancers is a rapidly growing field in cancer research14. Immune checkpoint studies have considerably advanced immunotherapeutic drug development in cancer treatment15,16. The FDA approved the use of antibodies (Abs) against cytotoxic T-lymphocyte antigen 4 (CTLA-4), programmed cell death protein 1 (PD-1), and its ligand PD-L1 for the treatment of melanoma, lung cancer, head and neck cancer, and bladder cancer17,18,19,20. Clinical trials of monotherapy or combination therapy using one or multiple antibodies against PD-1, PD-L1, or CTLA-4 for the treatment of advanced HCC are ongoing21,22,23, and some trials have shown favorable results. In 2017, the FDA granted accelerated approval for anti-PD-1 antibody to treat HCC patients, who are resistance to sorafenib, but the overall response rate of this therapy is only 14.3%. Other strategies have not been translated into clinical practice at this time24,25. Overcoming tumor-induced profound immune tolerance to improve immune checkpoint therapy26; predicting efficacy of immune checkpoint therapy; preventing immune-related adverse events; optimizing administration route, dosage, and frequency; and finding effective combinations of therapies27,28,29 all remain extremely challenging tasks.
There are several conventional approaches used to induce HCC in mouse models currently and are utilized depending on the investigator&#39;s particular research question30. Chemically-induced HCC mouse models with genotoxic compounds mimic injury-induced malignancy. Xenograft models through either ectopic or orthotopic implantation of HCC cell lines are suitable for drug screening. A number of genetically modified mice have been engineered to investigate the pathophysiology of HCC. Transgenic mice expressing viral genes, oncogenes and/or growth factors allow the identification of pathways involved in hepatocarcinogenesis. Due to inherent limitations, these models do not recapitulate the typical immune characteristics seen in human HCC, which has significantly impeded elucidation of the underlying mechanisms and development of innovative immunotherapeutic strategies14,15. We recently created a clinically relevant murine model. This novel model not only mimics human HCC initiation and progression but also reflects most typical features of human disease including immune dysfunction. We have characterized its biological and immunological characteristics. Leveraging this novel model, we have explored various immunotherapeutic strategies to treat HCC31,32,33,34,35,36,37. This unique platform allows us to study mechanisms of tumor-induced immunotolerance and to develop proof-of-concept therapeutic strategies for HCC toward eventual clinical translation.

<table border="0" cellpadding="0" cellspacing="0" style="width:848px;" width="847">
	<colgroup>
		<col />
		<col />
		<col />
		<col />
	</colgroup>
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:215px;">Anesthesia machine</td>
			<td style="width:123px;">VETEQUIP</td>
			<td style="width:344px;">IMPAC6</td>
			<td style="width:167px;">anesthesia machine for surgery</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Butterfly needle</td>
			<td>BD</td>
			<td>8122963</td>
			<td>Needle used for liver perfusion</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">C57BL/6 mice</td>
			<td>Jackson Lab</td>
			<td>000664&#160;</td>
			<td>mice used in prototol</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Carprofen</td>
			<td>CRESCENT CHEMICAL</td>
			<td>20402</td>
			<td>carprofen for pain release</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Cell Strainer&#160;</td>
			<td>CORNING</td>
			<td>REF 431751</td>
			<td>Cell strainer, 70&#181;m, for hepatocytes isolation</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Centrifuge</td>
			<td>Beckman Coulter</td>
			<td>Allegra X-30R</td>
			<td>centrifuge for cell isolation</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Clips&#160;</td>
			<td>Teleflex Medical</td>
			<td>REF 523700</td>
			<td>Titanium Clips for spleen</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Microscope</td>
			<td>Zeiss</td>
			<td>Primovert&#160;</td>
			<td>microscope for cell observation</td>
		</tr>
		<tr height="24">
			<td height="24" style="height:24px;">Mtd2 mice</td>
			<td>N/A</td>
			<td></td>
			<td>Gift from Dr. William A Held at roswell Park Cancer Institute in 2002, maintained in our lab</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Needle</td>
			<td>BD</td>
			<td>REF 305109</td>
			<td>BD precisionglide needle, 27G x 1/2 (0.4mm x 13mm)</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Suture</td>
			<td>ETHICON</td>
			<td>J303H</td>
			<td>coated VICRYL suture</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">SV40 T Ag antibody</td>
			<td>Abcam</td>
			<td>ab16879</td>
			<td>anti-SV40 T-antigen antibody for IHC</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Syringe</td>
			<td>BD</td>
			<td>REF 309626</td>
			<td>1 mL TB syringe for cell injection</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Trypan blue</td>
			<td>SIGMA</td>
			<td>T 8154</td>
			<td>Trypan blue solution for cell viability test</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Wound clips</td>
			<td>Reflex</td>
			<td>reflex9, Part. No. 201-1000</td>
			<td>stainless steel wound clips for wound close</td>
		</tr>
	</tbody>
</table>

an oncogenic hepatocyte-induced orthotopic mouse model of hepatocellular cancer arising in the setting of hepatic inflammation and fibrosis

The absence of a clinically relevant animal model addressing the typical immune characteristics of hepatocellular cancer (HCC) has significantly impeded elucidation of the underlying mechanisms and development of innovative immunotherapeutic strategies. To develop an ideal animal model recapitulating human HCC, immunocompetent male C57BL/6J mice first receive a carbon tetrachloride (CCl4) injection to induce liver fibrosis, then receive histologically-normal oncogenic hepatocytes from young male SV40 T antigen (TAg)-transgenic mice (MTD2) by intra-splenic (ISPL) inoculation. Androgen generated in recipient male mice at puberty initiates TAg expression under control of a liver-specific promoter. As a result, the transferred hepatocytes become cancer cells and form tumor masses in the setting of liver fibrosis/cirrhosis. This novel model mimics human HCC initiation and progression in the context of liver fibrosis/cirrhosis and reflects the most typical features of human HCC including immune dysfunction.

Oncogenic hepatocytes isolated from TAg-transgenic mice (Figure 2) were seeded in the liver of wild type mice by intra-splenic injection (Figure 3). The transplanted hepatocytes successfully and reliably grew orthotopic HCC tumors (Figure 4) with tumor specific antigen SV40 TAg (Figure 5) in the setting of hepatic inflammation and fibrosis (Figure 1).
<img alt="Figure 1" class=...

Watch this Scientific Journal Video about An Oncogenic Hepatocyte-Induced Orthotopic Mouse Model of Hepatocellular Cancer Arising in the Setting of Hepatic Inflammation and Fibrosis at JoVE.com

An Oncogenic Hepatocyte-Induced Orthotopic Mouse Model of Hepatocellular Cancer Arising in the Setting of Hepatic Inflammation and Fibrosis (Video) | JoVE

Here, we describe the development of a clinically relevant murine model of liver cancer recapitulating the typical immune features of hepatocellular cancer (HCC).

An Oncogenic Hepatocyte-Induced Orthotopic Mouse Model of Hepatocellular Cancer Arising in the Setting of Hepatic Inflammation and Fibrosis

The absence of a clinically relevant animal model addressing the typical immune characteristics of hepatocellular cancer (HCC) has significantly impeded ...

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Fluorescent Orthotopic Mouse Model of Pancreatic Cancer

Fluorescent Orthotopic Mouse Model of Pancreatic Cancer (Video) | JoVE

Pancreatic cancer remains one of the cancers for which survival has not improved substantially in the last few decades. Only 7% of diagnosed patients will ...

Isolation of Circulating Tumor Cells in an Orthotopic Mouse Model of Colorectal Cancer

Isolation of Circulating Tumor Cells in an Orthotopic Mouse Model of Colorectal Cancer (Video) | JoVE

Despite the advantages of easy applicability and cost-effectiveness, subcutaneous mouse models have severe limitations and do not accurately simulate ...

Immunophenotyping of Orthotopic Homograft (Syngeneic) of Murine Primary KPC Pancreatic Ductal Adenocarcinoma by Flow Cytometry

Immunophenotyping of Orthotopic Homograft Syngeneic of Murine Primary KPC Pancreatic Ductal Adenocarcinoma by Flow Cytometry (Video) | JoVE

Homograft (syngeneic) tumors are the workhorse of today&#39;s immuno-oncology (I/O) preclinical research. The tumor microenvironment (TME), particularly ...

Murine Model of Metastatic Liver Tumors in the Setting of Ischemia Reperfusion Injury

Murine Model of Metastatic Liver Tumors in the Setting of Ischemia Reperfusion Injury (Video) | JoVE

Liver ischemia and reperfusion (I/R) injury, a common clinical challenge, remains an inevitable pathophysiological process that has been shown to induce ...

Studying Triple Negative Breast Cancer Using Orthotopic Breast Cancer Model

Studying Triple Negative Breast Cancer Using Orthotopic Breast Cancer Model (Video) | JoVE

Triple-negative breast cancer (TNBC) is an aggressive breast cancer subtype with limited therapeutic options. When compared to patients with less ...

Ultrasound-Guided Orthotopic Implantation of Murine Pancreatic Ductal Adenocarcinoma

Ultrasound-Guided Orthotopic Implantation of Murine Pancreatic Ductal Adenocarcinoma (Video) | JoVE

The recent success of immune checkpoint blockade in melanoma and lung adenocarcinoma has galvanized the field of immuno-oncology as well as revealed the ...

Generation of Orthotopic Pancreatic Tumors and Ex vivo Characterization of Tumor-Infiltrating T Cell Cytotoxicity

Generation of Orthotopic Pancreatic Tumors and Ex vivo Characterization of Tumor-Infiltrating T Cell Cytotoxicity (Video) | JoVE

In vivo models of pancreatic cancer provide invaluable tools for studying disease dynamics, immune infiltration and new therapeutic strategies. The ...

Mapping the Structure-Function Relationships of Disordered Oncogenic Transcription Factors Using Transcriptomic Analysis

Mapping the Structure-Function Relationships of Disordered Oncogenic Transcription Factors Using Transcriptomic Analysis (Video) | JoVE

Many cancers are characterized by chromosomal translocations which result in the expression of oncogenic fusion transcription factors. Typically, these ...

In Vitro Evaluation of Oncogenic Transformation in Human Mammary Epithelial Cells

In Vitro Evaluation of Oncogenic Transformation in Human Mammary Epithelial Cells (Video) | JoVE

Tumorigenesis is a multi-step process in which cells acquire capabilities&#160;that allow their growth, survival, and dissemination under hostile ...

An Orthotopic Resectional Mouse Model of Pancreatic Cancer

An Orthotopic Resectional Mouse Model of Pancreatic Cancer (Video) | JoVE

There is a lack of satisfactory animal models to study adjuvant and/or neoadjuvant therapy in patients being considered for surgery of pancreatic cancer ...