Name: development and maintenance of a preclinical patient derived tumor xenograft model for the investigation of novel anti-cancer therapies
Uploaded: 2016-09-30T13:00:00
Description: Watch this Scientific Journal Video about Development and Maintenance of a Preclinical Patient Derived Tumor Xenograft Model for the Investigation of Novel Anti-Cancer Therapies at JoVE.com

This work was supported by grant 1R01CA152303-01.

Etik Beyanı: Hasta kaynaklı kolorektal adenokarsinom tümör örnekleri Colorado Çoklu Kurumsal Değerlendirme Kurulu (08-0439) tarafından onaylanmış bir protokol uyarınca Colorado Üniversitesi Hastanesi hastaları rıza elde edilmiştir. Tüm hayvan çalışmaları Colorado Denver Kurumsal Hayvan Bakımı ve Kullanımı Komitesi Üniversitesi tarafından onaylanan hayvan protokol çerçevesinde gerçekleştirildi (IACUC, Protokol # 51412 (06) 1E ve 96813 (04) 1E). 1. Alma ve Hasta Kan...

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PDTX ilaç keşif platformu yeni bileşiklerin klinik etkinliğini öngörmede güvenilmez diğer preklinik modellerin eksiklikleri gelişmiş bir model sunuyor. Önemli olarak, bu modelde, tümörler, biyolojik olarak kararlı, metastatik potansiyelini korumak ve kuşaktan içindeki ilaç tepki gösterirler. Bu modelde, hastanın türevli tümörler, atimik çıplak farelere enjekte geçişli ve daha sonra tedavi değerlendirmesinde kullanılır. içeren başarılı bir PDTX banka için birkaç kritik adımlar vardır:...

Kolorektal kanser (KRK) Amerika Birleşik Devletleri&#39;nde kanser ölümlerinin önemli bir katkıda bulunmaktadır. 2015 yılında, 49.700 ölüm 1 ile ÇHS tahmini 132.700 yeni vaka vardı. lokalize hastalığı olan hastalarda prognoz mükemmel olmasına rağmen, ilerlemiş hastalığı olan hastalarda yeni tedavilerin geliştirilmesinde bu önemli bir öncelik haline kötü sonuçlar var. bakım kemoterapötik rejimleri ve bu hastalığa karşı konuşlandırılmış yeni biyolojik standart olmasına rağmen, genel sağkalım sadece bir artan bir artış olmuştur. Buna göre, bu hastalıkta tümör büyümesini kolaylaştırmak katılan sürücü yollarının anlaşılmasında önemli bir çaba var. Kanser Genom Atlas ağ en son sayıda ana CRC bozukluğunun karıştığı ve bunlar yolları belirlemiştir: WNT, fosfoinositid 3-kinaz (PI3K), RAS, dönüştürücü büyüme faktörü-β (TGF-β) ve TP53 2. Birlikte, araştırmalar ot nitelendirdiCRC büyümeyi güçlendirir onun yollar önemli ölçüde bu hasta popülasyonunda 3-5 sağkalımı iyileştirmeyi amaçlayan yeni tedavilerin gelişimini başlatmıştır. Onkoloji ilaç geliştirilmesinde kullanılması klinik öncesi modellerde, bu yeni bileşiklerin klinik aktivite tahmin bu süreçte temel olmuştur. Çeşitli klinik öncesi modellerde ilaç geliştirme sürecinde kullanılmıştır. Preklinik transgenik hayvan modelleri ve hücre hatları büyük ölçüde insan tümörlerinin karmaşıklığını yansıtacak şekilde yetersizlik, yeni onkoloji tedavilerin klinik etkinliğini belirlemede başarısız olmuştur ölümsüzleştirdi göz önüne alındığında, hasta kaynaklı tümör xenograft (PDTX) modelleri kurulmuştur. Bu modelin en büyük avantajı, tümör heterojen bozulmadan kalır ve yakından menşeli hastanın tümör 6-9 moleküler özelliklerini ve klonalite yansıtır olmasıdır. PDTX modelleri, in vivo bir harikalarını sağlamakpreklinik bir platform yeni ajanlar, ilaç direnci yolları, kombinasyonel stratejileri ve kanser kök hücre biyolojisi 10 incelemek için. PDTX işleminin genel bir bakış, Şekil 1 &#39;de gösterilmiştir. Bu klinik başlar onların aşırı tümör dokusunun bir kısmı, bu araştırma için kullanılan izin vermek için hasta rızası. Sonraki, ameliyatta tümörün bir parça bir patolog tarafından hasılat ve araştırma personeline taşınacak ortama koydu. Bunun hemen ardından, tümör bölümü, küçük parçalar halinde kesilmiş ve deri altından bağışıklık yetersizliği olan farelere transplante edilir. Tümör büyüdükçe sonra, tümör 10 muhafaza edilmesi amacıyla farelerin farklı kuşaklar içine geçirilerek edilir. Tipik haliyle, F3 nesil sonra tümör yeni bileşikler ve / veya kombinasyonel tedaviler değerlendirilir tedavi çalışmaya genişletilebilir. Kullanan Next Gen Dizi (exome Seq, RNA Seq ve SNP dizi) potansiyel öngörü biyolojik belirteçler keşfetmek vardırBelirli bir tedaviden fayda görebilecek hastaların seçiminde yardımcı ed. 1) tek ajan olarak veya kombinasyon halinde yeni tedavilerin etkinliğini değerlendirmek ve 2) öncesinde klinik araştırma duyarlılık veya direnç tahmin biyobelirteçlerini tespit: PDTX modelleri kullanarak kapsayıcı hedefleri şunlardır. Bu yazıda, bir CRC PDTX bankanın başlatılması ve bakım metodoloji sağlamak ve ilaç geliştirme keşfi bu modelin avantajları ve sınırlamaları sağlamaktadır. <img alt="Şekil 1" src="/files/ftp_upload/54393/54393fig1.jpg" /> CRC PDTX Modeli Protokolü Şekil 1. Genel. Hasta edilen tümör cerrahisi alınan hemen deri altından atimik çıplak farelere enjekte edilir. Tümör büyüdükçe kez sonraki nesillere genişletilir ve sonuçta tedavi çalışmaları için genişletilir. Tedavi RESPOnses değerlendirilir ve tahmini biyomarkerlar. Hasta seçiminde yardımcı olabilir belirlenmiştir <a href="https://www.jove.com/files/ftp_upload/54393/54393fig1large.jpg" target="_blank">, bu rakamın büyük halini görmek için lütfen buraya tıklayınız.</a>

<table border="0" cellpadding="0" cellspacing="0" width="915">
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">RPMI or DMEM</td>
			<td style="width:81px;">Corning</td>
			<td style="width:119px;">10-040-CV</td>
			<td style="width:499px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Penicillin-Streptomycin</td>
			<td style="width:81px;">Corning</td>
			<td style="width:119px;">30-002-CI</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Non-essential Amino Acids</td>
			<td style="width:81px;">Corning</td>
			<td style="width:119px;">25-025-CI</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Fetal Bovine Serum</td>
			<td style="width:81px;">Corning</td>
			<td style="width:119px;">35-010-CV</td>
			<td>Thaw in -4 &#176;C, then activate for 30 minutes at 60 &#176;C water bath</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">CPT blood tube</td>
			<td style="width:81px;">BD vacutainer</td>
			<td style="width:119px;">362761</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Microcentrifuge tube</td>
			<td style="width:81px;">Surelock</td>
			<td style="width:119px;">A-7002</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Phospate-Buffered Saline</td>
			<td style="width:81px;">Corning</td>
			<td style="width:119px;">21-040-CV</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Cyrogenic vials</td>
			<td style="width:81px;">Cyroking</td>
			<td style="width:119px;">C0732901</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Plastic tumor cutting dish</td>
			<td style="width:81px;">Trueline</td>
			<td style="width:119px;">TR4001</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Scissors</td>
			<td style="width:81px;">Roboz</td>
			<td style="width:119px;">RS-5881</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Forceps</td>
			<td style="width:81px;">Roboz</td>
			<td style="width:119px;">RS-5135</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">Matrigel (gelatinous protein mixture)</td>
			<td style="width:81px;">Corning</td>
			<td style="width:119px;">354234</td>
			<td>Store at -20 or -80 &#176;C, then thaw on ice, do not leave at room temperature</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">10% Formalin cups</td>
			<td style="width:81px;">Protocol</td>
			<td style="width:119px;">032-059</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:216px;">Liquid Nitrogen Dewar Storage</td>
			<td style="width:81px;">Thermolyne</td>
			<td style="width:119px;">CY50900</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Portable liquid nitrogen dewar</td>
			<td style="width:81px;">Nalgene</td>
			<td style="width:119px;">4150-2000</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Dimethyl Sulfoxide</td>
			<td style="width:81px;">Fischer</td>
			<td style="width:119px;">67-68-5</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Freezing container: Mr Frosty</td>
			<td style="width:81px;">Nalgene</td>
			<td style="width:119px;">5100-0001</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Isopropyl Alcohol</td>
			<td style="width:81px;">Decon</td>
			<td style="width:119px;">64-17-5</td>
			<td></td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:216px;">Trocars</td>
			<td style="width:81px;">Innovative Research of America</td>
			<td style="width:119px;">MP-182</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">Anesthesia machine</td>
			<td style="width:81px;">Patterson Veterinary</td>
			<td style="width:119px;">none</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">Anesthesia box</td>
			<td style="width:81px;">Patterson Veterinary</td>
			<td style="width:119px;">none</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Isoflurane</td>
			<td style="width:81px;">Vet one</td>
			<td style="width:119px;">1038005</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">F-Air Canister</td>
			<td style="width:81px;">Bickford Omnicon</td>
			<td style="width:119px;">80120</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Meloxicam</td>
			<td style="width:81px;">Vet one</td>
			<td style="width:119px;">5182-90C</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Calipers</td>
			<td style="width:81px;">Fowler</td>
			<td style="width:119px;">54-100-167</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Weight scale</td>
			<td style="width:81px;">Ohaus</td>
			<td style="width:119px;">Scout Pro SP601</td>
			<td></td>
		</tr>
	</tbody>
</table>

development and maintenance of a preclinical patient derived tumor xenograft model for the investigation of novel anti-cancer therapies

Patient derived tumor xenograft (PDTX) models provide a necessary platform in facilitating anti-cancer drug development prior to human trials. Human tumor pieces are injected subcutaneously into athymic nude mice (immunocompromised, T cell deficient) to create a bank of tumors and subsequently are passaged into different generations of mice in order to maintain these tumors from patients. Importantly, cellular heterogeneity of the original tumor is closely emulated in this model, which provides a more clinically relevant model for evaluation of drug efficacy studies (single agent and combination), biomarker analysis, resistant pathways and cancer stem cell biology. Some limitations of the PDTX model include the replacement of the human stroma with mouse stroma after the first generation in mice, inability to investigate treatment effects on metastasis due to the subcutaneous injections of the tumors, and the lack of evaluation of immunotherapies due to the use of immunocompromised mice. However, even with these limitations, the PDTX model provides a powerful preclinical platform in the drug discovery process.

CRC PDTX Modelleri ve TCGA Ortak Mutasyonlarının Benzerlikler Biz CRC PDTX bankada ortak mutasyonlar (KRAS, NRAS, BRAF, PIK3CA, APC, CTNNB1 ve TP53) yüzdesi CRC hasta popülasyonunda görülen mutasyon sıklığı temsilcisi olup olmadığını araştırdık. Şekil 2A (TCGA) ve B (CRC PDTX Bankası) &#39;de gösterildiği gibi, bu genlerdeki mutasyonların sıklı...

Watch this Scientific Journal Video about Development and Maintenance of a Preclinical Patient Derived Tumor Xenograft Model for the Investigation of Novel Anti-Cancer Therapies at JoVE.com

Development and Maintenance of a Preclinical Patient Derived Tumor Xenograft Model for the Investigation of Novel Anti-Cancer Therapies

deri altı klinik öncesi modelde hasta kaynaklı tümörler kullanarak yeni tedavilerin, öngörü biyomarker keşif ve ilaca dirençli yolların etkinliğini incelemek için mükemmel bir yoldur. Bu model, ilaç geliştirme sürecinde, klinik araştırma önce birçok yeni anti-kanser terapisi kaderini belirlemede önemlidir.

Bir Klinik öncesi Hasta Türetilmiş Tümör Roman Anti-Kanser Tedaviler Soruşturma Xenograftlarında Modeli Geliştirilmesi ve Bakımı

Patient derived tumor xenograft (PDTX) models provide a necessary platform in facilitating anti-cancer drug development prior to human trials. Human tumor ...

The overall goal of this subcutaneous Patient Derived Tumor Xenograft procedure is to the study the efficacy of novel therapies predictive biomarker discovery and drug resistant pathways in tumors. This method can help answer key questions in the oncology field about whether a particular drug exhibits activity against a specific tumor type. The main advantage of this technique is that Patient Derived Tumor Xenographs maintain the molecular, genetic and histologist heterogeneity typical of the tumors of origin, making the model more clinically relevant.Demonstrating the procedure will be Stacey Bagby, a professional research assistant and certified veterinary technician from our laboratory. After collecting one to two milliliters of blood in a blood cell separation tube containing sodium citrate, centrifuge the samples and transfer the peripheral blood mononuclear cell layer into a 1.5 milliliter micro-centrifuge tube. Fill the tube to the top with sterile PBS.Then, spin down the cells again. Followed by a quick wash with one milliliter of PBS, being careful not to disturb the PMBC pellet. Then, use a pipette to transfer the plasma from the blood cell collection tube to a 1.5 milliliter sterile cryogenic vial, and store the plasma and the PBMC pellet at negative 80 degrees Celsius.Transfer the human tumor tissue to the animal facility in a sterile cup containing complete medium and place the cup in a laminar flow hood. As soon as possible, after harvesting, transfer the tissue into a sterile plastic cutting dish in a small amount of the retrieval medium. Then, using autoclave sterilized small scissors and forceps, cut the tissue into approximately three by three by three milliliter pieces and place 10 to 12 pieces into an autoclave sterilized 1.5 milliliter micro-centrifuge tube containing 300 microliters of gelatinous protein mixture solution on ice for the implantation.For flash frozen storage, transfer the appropriate number of tumor pieces into a new 1.5 milliliter micro-centrifuge tube and place the vial in a liquid nitrogen doer. Then, place in a minus 80 degrees Celsius freezer. For formal infixing and paraffin embedding, place three small tumor pieces into a 10 milliliter 10%formalin cup for 24 hours.After the tissues are processed into paraffin embedded blocks, transfer any remaining tissue pieces into a cryogenic tube. Then, add one milliliter of complete medium supplemented with 10%DMSO to the tissue and store the tubes on ice until they can be transferred into an isopropyl alcohol freezing container. And put that container in a minus 80 degrees Celsius freezer.To inject the tumor tissue, load the pieces of tumor stored in the gelatinous protein mixture solution into autoclaved 12-gauge trocars, taking care that each tumor piece is completely inserted into the trocar. Next, confirm a lack of response to toe pinch in a six to eight week old athymic, nude mouse and transfer the mouse onto a clean field in a sterile laminar flow hood. Deliver the F0 tumor subcutaneously to the dorsal neck region and to each side of the mouse's flank, followed by the subcutaneous administration of analgesia distal to one of the flank sites of tumor injection.Then, place the mouse back in its cage with monitoring until it is fully recovered. Monitor the growth and health of the xenograph-implanted mice at least once per week, recording the tumor sizes, tumor generation, date of tumor injection, and health of the mice in an appropriate tracking system. When a tumor reaches approximately 1, 500 to 2, 000 cubic millimeters in size, use autoclaved scissors and forceps to excise the tumor and passage the F1 tumor into the next generation of five animals, as just demonstrated, taking care to collect flash frozen formalin and viable tumor samples as demonstrated for each tumor.When the remaining mice from the F0 tumor group exhibit tumors approximately 1, 500 to 2, 000 cubic millimeters in size, collect these tumors as just demonstrated for collection. When the stage F15 tumor generation is reached, use the earliest generation of viable tumor pieces available in liquid nitrogen storage for the next series of tumor injections. When the desired tumor is very large, 1, 500 to 2, 000 cubic millimeters, follow the procedures above to collect the tumor to expand it into the desired amount of mice.Dose the mice with the drug and weigh and measure them twice per week. Randomize the mice into treatment groups with 10 tumors per group, and a group tumor volume average of 100 to 300 cubic millimeters within a few standard deviations of each other. Then, sort the mice into the appropriate groups for treatment.Dual color fluorescence in situ hybridization for the human and mouse caught one DNA demonstrates that the human stromal cells in the F0 tumor are replaced by the mouse stromal cells in the F1 tumor. Whereas, all of the human-derived hepatocyte growth factor in the F0 generation is replaced with mouse hepatocyte growth factor in F1 generation, the vascular endothelial growth factor ligand consists of both human and mouse protein in the F1 generation. The treatment of different generations of the same tumor does not change the treatment response.With the resistance or sensitivity of the tumor appearing to be tumor strain rather than tumor generation specific. Further, the frequency of mutations in these commonly mutated genes is very similar between the cancer genome atlas and the colorectal patient-derived tumor xenograph bank. Suggesting that the common mutations observed in the colorectal patient population are well represented in the colorectal patient-derived xenotransplant model.Once mastered, this technique can be completed in one to two hours, if performed properly. While attempting this procedure, it is important to have a cohesive clinical team for identifying and obtaining consent from the cancer patients and for the removal and grossing of the tumor tissue. Following this procedure, other methods, like the investigation of anti-cancer compounds as single or combination agents, can be performed to answer additional questions about the viability of these strategies for patients with a particular tumor type.After its development, this technique paved the way for researchers in the field of oncology to explore novel cancer therapeutics, tumor heterogeneity, treatment resistant mechanisms, cancer stem cell biology, and tumor stromal interactions. After watching this video, you should have a good understanding on how to develop and maintain a patient derived tumor xenograph model for evaluating novel cancer therapeutics.

Research

JoVE Journal

Cancer Research

Labeling of Breast Cancer Patient-derived Xenografts with Traceable Reporters for Tumor Growth and Metastasis Studies

Tümör Büyüme ve metastaz Çalışmaları İzlenebilir Muhabirleri ile Meme Kanseri Hasta kaynaklı ksenogratflarının Etiketleme

The use of preclinical models to study tumor biology and response to treatment is central to cancer research. Long-established human cell lines, and many ...

Kanser Araştırmaları

A Syngeneic Mouse Model of Metastatic Renal Cell Carcinoma for Quantitative and Longitudinal Assessment of Preclinical Therapies

Preklinik Tedaviler Nicel ve Boyuna Değerlendirme A sinjeneik Fare Modeli Yapmış Bir Renal Hücreli Karsinom

Renal cell carcinoma (RCC) affects &#62; 60,000 people in the United States annually, and ~ 30% of RCC patients have multiple metastases at the time of ...

Tumor Engraftment in a Xenograft Mouse Model of Human Mantle Cell Lymphoma

Tümör Engraftment insan Mantle hücreli lenfoma, Xenograft fare modeli

B lymphocytes are key players in immune cell circulation and they mainly home to and reside in lymphoid organs. While normal B cells only proliferate when ...

Establishment of a Primary Culture of Patient-derived Soft Tissue Sarcoma

Hasta elde edilen yumuşak doku sarkomu birincil kültürünün kurulması

Soft tissue sarcomas (STS) represent a spectrum of heterogeneous malignancies with a difficult diagnosis, classification, and management. To date, more ...

Digital Polymerase Chain Reaction Assay for the Genetic Variation in a Sporadic Familial Adenomatous Polyposis Patient Using the Chip-in-a-tube Format

Dijital polimeraz zincir reaksiyonu tahlil için tüp içinde çip biçimini kullanarak bir sporadik ailesel Adenomatous poliposis hastada genetik varyasyon

The quantitative analysis of human genetic variation is crucial for understanding the molecular characteristics of serious medical conditions, such as ...

Investigation of Genetic Dependencies Using CRISPR-Cas9-based Competition Assays

CRISPR-Cas9-tabanlı rekabet deneyleri kullanarak genetik bağımlılıkları incelenmesi

Gene perturbation studies have been extensively used to investigate the role of individual genes in AML pathogenesis. For achieving complete gene ...

Patient-derived Orthotopic Xenograft Models for Human Urothelial Cell Carcinoma and Colorectal Cancer Tumor Growth and Spontaneous Metastasis

Insan Üromotorial Hücre Karsinomu ve kolorektal kanser tümörü büyüme ve spontan Metasrik için hasta türevi Ortootopik xenograft modelleri

Cancer patients have poor prognoses when lymph node (LN) involvement is present in both high-grade urothelial cell carcinoma (HG-UCC) of the bladder and ...

Patient-derived Heterogeneous Xenograft Model of Pancreatic Cancer Using Zebrafish Larvae as Hosts for Comparative Drug Assessment

Karşılaştırmalı Ilaç değerlendirmesi için ev sahipleri olarak zebrafish larvaları kullanarak pankreas kanserinin hasta türevi heterojen xenograft modeli

Patient-derived tumor xenograft (PDX) and cell-derived tumor xenograft (CDX) are important techniques for preclinical assessment, medication guidance and ...

A Melanoma Patient-Derived Xenograft Model

Bir melanom hasta-türetilen xenograft model

Accumulating evidence suggests that molecular and biological properties differ in melanoma cells grown in traditional two-dimensional tissue culture ...

Establishment of Gastric Cancer Patient-derived Xenograft Models and Primary Cell Lines

Mide kanseri hasta-türetilen xenograft modelleri ve primer hücre hatları kurulması

The use of preclinical models to advance our understanding of tumor biology and investigate the efficacy of therapeutic agents is key to cancer research. ...