Name: stereotactic adoptive transfer of cytotoxic immune cells in murine models of orthotopic human glioblastoma multiforme xenografts
Uploaded: 2018-09-01T13:00:00
Description: Watch this Scientific Journal Video about Stereotactic Adoptive Transfer of Cytotoxic Immune Cells in Murine Models of Orthotopic Human Glioblastoma Multiforme Xenografts at JoVE.com

The authors thank the staff of the University Hospital animal facility (UTE) of Nantes for animal husbandry and care, the cellular and tissular imaging core facility of Nantes University (MicroPICell) for imaging, and the Cytometry facility (Cytocell) from Nantes for their expert technical assistance. This work was funded by INSERM, CNRS, Universit&#233; de Nantes, Institut National du Cancer (INCa#PLBio2014-155), Ligue Nationale contre le Cancer (AO InterRegional 2017), and the European consortium ERA-Net Transcan2 (Immunoglio). The team is funded by the Fondation pour la Recherche Medicale (DEQ20170839118). This work was realized in the context of the LabEX IGO and the IHU-Cesti programs, supported by the National Research Agency Investissements d'Avenir via the programs ANR-11-LABX-0016-01 and ANR-10-IBHU-005, respectively. The IHU-Cesti project is also supported by Nantes Metropole and the Pays de la Loire Region. The authors thank Chirine Rafia for providing help in correcting the manuscript.

The following procedure involving animal subjects was performed according to institutional guidelines (Agreement #00186.02; regional ethics committee of the Pays de la Loire [France]). Human PBMCs were isolated from the blood collected from informed healthy donors (Etablissement Fran&#231;ais du Sang Nantes, France). All steps are performed under sterile conditions.
1. Non-specific Expansion of Cytotoxic Effector T Lymphocytes
<ol>
	<li>Prepare and irradiate feeder cells at 35 Gy. For the st...

<ol>
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An adoptive transfer of selected native or engineered immune effector cells represents a promising approach to efficiently treat tumors, such as infiltrative brain cancers, taking care of limiting reactivities against non-transformed cells15,16,17,18. However, the central nervous system, which comprises the brain, has a particular immune status, notably due to the existence of the blood-brain b...

GBM (WHO grade IV astrocytoma), is the most frequent and aggressive primary brain cancer in adults. In spite of aggressive treatments that combine surgery and radio-chemotherapy, GBM remains associated with an extremely poor prognosis (median survival of 14.6 months and a 2-year-mortality &#62; 73%)1. This evidences that few efficient therapeutic advances have been validated over the last decade2. Among candidates for the design of more effective therapeutic strategies3,4,5, immunotherapies6 are currently explored to track and eliminate highly invasive and radio/chemo-resistant tumor cells, suspected for their key contribution to rapid and fatal tumor relapse7. Various potential immunological targets were identified and proposed for immunotherapies, involving natural or modified &#945;&#946; or &#978;&#948; T lymphocytes such as GBM-specific tumor antigens or stress-induced molecules8,9,10. The possibility to administrate selected GBM-reactive immune cell effectors represents a unique opportunity to deliver elevated amounts of effector lymphocytes directly into the site of residual malignancy. To support this strategy, we have recently shown that models based on immunodeficient mice carrying orthotopic primary human GBM xenografts faithfully recapitulate the development of brain tumors in GBM patients9,11. Moreover, these models were used to demonstrate the strong antitumor efficiency of adoptively transferred allogeneic human V&#978;9V&#948;2T lymphocytes.
This protocol describes the critical experimental steps for achieving stereotactic immunotherapies of brain tumors, such as GBM, based on the adoptive transfer of allogeneic T lymphocytes. The article shows: (i) the amplification of therapeutic allogeneic immune effector T lymphocytes, such as human V&#978;9V&#948;2T lymphocytes; (ii) the preparation of these effector T lymphocytes for injection; (iii) the procedure for stereotactic administration within the brain, near the tumor. This article also provides insight into the behavior of these cellular effectors after stereotactic injection.
The therapeutic approach presented here is based on the injection of 20 x 106 effector cells per dose for each brain tumor-bearing immunodeficient mouse. An initial in vitro expansion step is required to produce large quantities of immune cells. Therefore, non-specific cell expansions are performed using phytohemagglutinin (PHA-L) and irradiated allogeneic feeder cells: peripheral-blood mononuclear cells (PBMCs) from healthy donors and Epstein Barr Virus (EBV)-transformed B-lymphoblastoid cell lines (BLCLs), derived from PBMCs by in vitro infection with EBV-containing culture supernatant from the Marmoset B95-8 cell line, in the presence of 1 &#181;g/mL cyclosporin-A.
GBM-reactive effector immune cells are compared and selected from in vitro assays9. These effector cells are activated and amplified using standard protocols, according to their nature (e.g., human V&#947;9V&#948;2 T lymphocytes9 or human anti-herpes virus &#945;&#946; T lymphocytes12) with a minimum purity of &#62; 80%, as routinely checked by cytometric analysis. The cell expansion procedure detailed below applies to various human lymphocyte subsets.

<table border="0" cellpadding="0" cellspacing="0" style="width:825px;" width="825">
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">PBMCs</td>
			<td style="width:136px;"></td>
			<td style="width:119px;"></td>
			<td style="width:232px;">from 3 different healthy donors</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">BLCLs</td>
			<td style="width:136px;"></td>
			<td style="width:119px;"></td>
			<td>from 3 different donors</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:339px;">Roswell Park Memorial Institute medium (RPMI)</td>
			<td style="width:136px;">Gibco</td>
			<td>31870-025</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:339px;">FCS</td>
			<td style="width:136px;">Dutscher</td>
			<td style="width:119px;">S1810-500</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">L-glutamine</td>
			<td style="width:136px;">Gibco</td>
			<td style="width:119px;">25030-024</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">penicillin/streptomycin</td>
			<td style="width:136px;">Gibco</td>
			<td style="width:119px;">15140-122</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">IL-2</td>
			<td style="width:136px;">Novartis</td>
			<td style="width:119px;">proleukin</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">PHA-L</td>
			<td style="width:136px;">Sigma</td>
			<td>L4144</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">Stereotaxic frame</td>
			<td>Stoelting Co.</td>
			<td align="right">51600</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">Mouse adaptator for stereotaxic frame&#160;&#160;</td>
			<td>Stoelting Co.</td>
			<td align="right">51624</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">microsyringe pump injector&#160;</td>
			<td style="width:136px;">WPI</td>
			<td style="width:119px;">UMP3-4</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">NanoFil Syringe</td>
			<td style="width:136px;">WPI</td>
			<td style="width:119px;">NF34BV-2</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">NSG mice</td>
			<td style="width:136px;">Charles River</td>
			<td style="width:119px;">NSGSSFE07S</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">Ketamine</td>
			<td style="width:136px;">Merial</td>
			<td style="width:119px;">Imalg&#232;ne 1000</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">Xylazine</td>
			<td style="width:136px;">Bayer</td>
			<td style="width:119px;">Rompur 2%</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">Scissors</td>
			<td style="width:136px;">WPI</td>
			<td style="width:119px;">201758</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">Forceps</td>
			<td style="width:136px;">WPI</td>
			<td style="width:119px;">501215</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">OmniDrill 115/230V</td>
			<td style="width:136px;">WPI</td>
			<td align="right">503598</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">Vicryl 4-0</td>
			<td style="width:136px;">Ethicon</td>
			<td>VCP397H</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:339px;">Xylocaine</td>
			<td style="width:136px;">Astrazeneca</td>
			<td>3634461</td>
			<td></td>
		</tr>
	</tbody>
</table>

stereotactic adoptive transfer of cytotoxic immune cells in murine models of orthotopic human glioblastoma multiforme xenografts

Glioblastoma multiforme (GBM), the most frequent and aggressive primary brain cancer in adults, is generally associated with a poor prognosis, and scarce efficient therapies have been proposed over the last decade. Among the promising candidates for designing novel therapeutic strategies, cellular immunotherapies have been targeted to eliminate highly invasive and chemo-radioresistant tumor cells, likely involved in a rapid and fatal relapse of this cancer. Thus, administration(s) of allogeneic GBM-reactive immune cell effectors, such as human V&#978;9V&#948;2 T lymphocytes, in the vicinity of the tumor would represents a unique opportunity to deliver efficient and highly concentrated therapeutic agents directly into the site of brain malignancies. Here, we present a protocol for the preparation and the stereotaxic administration of allogeneic human lymphocytes in immunodeficient mice carrying orthotopic human primary brain tumors. This study provides a preclinical proof-of-concept for both the feasibility and the antitumor efficacy of these cellular immunotherapies that rely on stereotactic injections of allogeneic human lymphocytes within intrabrain tumor beds.

This study describes the strategy of adoptive transfers of cellular immune effector cells within the brain of tumor-carrying mice, based on stereotactic injections performed directly within the tumor bed.
To minimize any risk of brain injury associated with a large injection volume, the effector cell suspension needs to be concentrated (20 x 106 cells in 15 - 20 &#181;L of PBS). To check whether this cell concentratio...

Watch this Scientific Journal Video about Stereotactic Adoptive Transfer of Cytotoxic Immune Cells in Murine Models of Orthotopic Human Glioblastoma Multiforme Xenografts at JoVE.com

Stereotactic Adoptive Transfer of Cytotoxic Immune Cells in Murine Models of Orthotopic Human Glioblastoma Multiforme Xenografts

Here, we present a protocol for the preparation and the stereotaxic administration of allogeneic human lymphocytes in immunodeficient mice carrying orthotopic human primary brain tumors. This study provides a proof-of-concept for both the feasibility and the antitumor efficacy of intrabrain-delivered cellular immunotherapies.

Glioblastoma multiforme (GBM), the most frequent and aggressive primary brain cancer in adults, is generally associated with a poor prognosis, and scarce ...

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