Name: a murine orthotopic bladder tumor model and tumor detection system
Uploaded: 2017-01-12T15:00:00.000+00:00
Duration: 6 min 23 s
Description: Watch this Scientific Journal Video about A Murine Orthotopic Bladder Tumor Model and Tumor Detection System at JoVE.com

This work was funded by a grant from the National Medical Research Council of Singapore (NMRC/CIRG/1335/2012) awarded to Professor Kesavan Esuvaranathan.

<ol>
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The authors have nothing to disclose.

Le fasi più critiche nel protocollo sono 1) mantenere correttamente la tumorigenicità della linea cellulare; 2) garantire la secrezione di PSA misurabile prima dell&#39;impianto delle cellule tumorali nei topi; 3) generare una cella singola sospensione per l&#39;impianto in modo da ridurre la variazione della dimensione del tumore; e 4) instillare cellule a bassa velocità per evitare vescico-ureterale reflusso, con conseguente impianto di cellule tumorali nel rene. Dopo passaggio prolunga...

L&#39;obiettivo di questo metodo è quello di generare tumori della vescica murino ortotopiche e di monitorare i tumori impiantati con la massima precisione possibile, in modo che i topi senza l&#39;impianto del tumore non è pensato per essere trattato ad analisi end-point. In generale, il metodo mostrato ridurrà la necessità di un gran numero di topi per analisi sperimentale e garantire una maggiore precisione nel determinare risultati terapeutici. Lo sviluppo di un modello ortotopico per il cancro è importante, in quanto le cellule tumorali impiantare sottocute non ricapitolano l&#39;ambiente della malattia clinica o consentire lo sviluppo di strategie terapeutiche. L&#39;architettura della vescica permette l&#39;instillazione di terapie del cancro della vescica direttamente nella vescica con effetti sistemici minimi. Così, i modelli animali che ricapitolano questo ambiente, come un modello ortotopico, sono importanti per valutare nuove terapie. Le conclusioni tratte da qualsiasi set-up sperimentale sono dependent sulle limitazioni del modello. Numerose tecniche sono state sviluppate per la produzione di tumori della vescica ortotopico nei topi. Questi si affidano danneggiare lo strato glicosaminoglicano della vescica, consentendo cellule tumorali da impiantare. Le tecniche utilizzate comprendono elettrocauterizzazione, che si traduce in un unico punto di danno nella parete della vescica, con conseguente sviluppo del tumore in un sito nella vescica 1,2. Tuttavia, il tasso di successo di impianto tumore, utilizzando elettrocauterizzazione è operatore-dipendente variabili da 10 - 90%, e comprende il pericolo che la parete della vescica viene perforato, portando a sviluppare tumori nella cavità peritoneale. Cauterizzazione chimica viene eseguita utilizzando nitrato d&#39;argento, che danneggia la parete della vescica 3. Analogamente, l&#39;acido è stato usato per danneggiare la parete della vescica 4. Tripsina è stato utilizzato anche per danneggiare la vescica e 5. Questi metodi possono provocare lo sviluppo di più di un tumore nella vescica.Inoltre, vi è il rischio di gravi danni alla vescica se le sostanze chimiche vengono lasciati a contatto con la parete della vescica per troppo tempo. Il metodo sviluppato da Ninalga et al. utilizza il poli-L-lisina carica positiva (PLL) 6 molecole per rivestire la parete della vescica; Questo permette alle cellule tumorali carica negativa ad attaccarsi al livello glicosaminoglicano della vescica. Questo metodo comporta generalmente più di un tumore sviluppare nella vescica, ma tumorale impianto è a 80 - 100% 4,7. Tecnicamente, è anche la procedura più semplice da eseguire. Per garantire che i tumori che si sviluppano sono abbastanza anche in dimensioni, è importante che le cellule tumorali non vengono raggruppati in grandi ciuffi prima dell&#39;impianto. Per valutare l&#39;efficacia terapeutica, è meglio effettuare questo studio su topi con tumori abbastanza di dimensioni simili. Così, un buon sistema di rilevamento che possono quantificare le dimensioni del tumore subito dopo l&#39;impianto è importante. Diverse strategie sono apen usato per valutare i tumori. Questi includono la risonanza magnetica (MRI) 8-10, fluorescenza 11, bioluminescenza 12,13, ultrasuoni 14, e il dosaggio di immunoassorbimento enzimatico (ELISA) 15,16. Mentre MRI e ultrasuoni non richiedono modifiche delle cellule tumorali, vi è la necessità di attrezzature e contrasto sensibili agenti per MRI. I saggi fluorescence-, luminescence-, e basati su ELISA richiedono modifiche delle cellule tumorali per esprimere proteine ​​marker che possono essere rilevati da questi metodi. Per luminescenza, un substrato è necessaria per la rilevazione dell&#39;attività di luciferasi; vi è quindi un passo aggiunto e aumento dei costi. Sia luminescenza e fluorescenza richiedono attrezzature specializzate. Per produrre fluorescenza, proteina fluorescente verde (GFP) ciclizzazione, che viene catalizzata da ossigeno molecolare, è necessaria. Così, l&#39;espressione della GFP può essere variabile all&#39;interno di una massa tumorale seconda accesso ad ossigeno, rendendo questo un indicatore piuttosto affidabile <sup&gt; 17. La modifica della linea di cellule murine cancro alla vescica MB49 a secernere prostatico umano Specific Antigen (PSA) 15,16 come marker surrogato è un&#39;altra strategia. Questi marcatori forniscono anche un mezzo alternativo di conferma presenza del tumore al termine dell&#39;esperimento, rendendoli alternativa alla immunoistochimica. Questo studio riporta il metodo PLL di impianto del tumore ortotopico e presenta un confronto tra sistemi di rilevamento del tumore, cioè ELISA, la fluorescenza, e imaging ad ultrasuoni.

<table><tbody><tr><td>MB49-PSA cells</td><td>N/A</td><td>N/A</td><td>ref (Wu QH, 2004)</td></tr><tr><td>RPMI 1640 media</td><td>HyClone</td><td>SH30027.01&amp;nbsp;</td><td></td></tr><tr><td>Dulbecco&#039;s Modified Eagle&#039;s Medium (DMEM) media</td><td>Biowest</td><td>L0102</td><td></td></tr><tr><td>Fetal Bovine Serum (FBS) South American</td><td>Biowest</td><td>S1810</td><td></td></tr><tr><td>Fetal Bovine Serum (FBS) South American, Premium</td><td>Biowest</td><td>S181B</td><td></td></tr><tr><td>Fetal Bovine Serum (FBS)</td><td>HyClone</td><td>SH30088.03&amp;nbsp;</td><td></td></tr><tr><td>L-glutamine</td><td>Biowest</td><td>X0550</td><td></td></tr><tr><td>Penicillin-Streptomycin</td><td>Biowest</td><td>L0022</td><td></td></tr><tr><td>Hygromycin B</td><td>Invitrogen</td><td>10687-010</td><td></td></tr><tr><td>free PSA (Human) ELISA kit</td><td>Abnova</td><td>KA0209</td><td></td></tr><tr><td>TRIzol Reagent for RNA extraction&amp;nbsp;</td><td>Ambion</td><td>15596026</td><td></td></tr><tr><td>High Capacity cDNA Reverse Transcription Kit with RNase Inhibitor</td><td>Applied Biosystems</td><td>4374967</td><td></td></tr><tr><td>TaqMan Universal PCR Master Mix</td><td>Applied Biosystems</td><td>4304437</td><td></td></tr><tr><td>TaqMan Gene Expression Assay &amp;ndash; Mouse Actb</td><td>Applied Biosystems</td><td>4331182</td><td>Mm00607939_s1</td></tr><tr><td>TaqMan Gene Expression Assay &amp;ndash; Human KLK3</td><td>Applied Biosystems</td><td>4331182</td><td>Hs00426859_g1</td></tr><tr><td>C57BL/6J female mice</td><td>In Vivos</td><td></td><td>4 - 6 wk old</td></tr><tr><td>Anesthesia (75 mg/kg Ketamine and 1 mg/kg Medetomidine)</td><td>Local pharmacy</td><td></td><td></td></tr><tr><td>Reversal drug (1 mg/kg Atipamezole)</td><td>Local pharmacy</td><td></td><td></td></tr><tr><td>Ear punch</td><td>Electron Microscopy Sciences</td><td>72893-01</td><td></td></tr><tr><td>Hartmann&#039;s solution or Compound sodium lactate</td><td>B Braun</td><td></td><td></td></tr><tr><td>Ophthalmic ointment - Duratears sterile ocular lubricant ointment</td><td>Alcon</td><td></td><td></td></tr><tr><td>Heat pack - HotHands handwarmers</td><td>Heatmax Inc</td><td></td><td></td></tr><tr><td>Introcan Certo IV catheter</td><td>B Braun</td><td>4251300</td><td>24 G x 3/4&amp;Prime;</td></tr><tr><td>Aquagel Lubricating jelly</td><td>Local pharmacy</td><td></td><td></td></tr><tr><td>Poly-L-lysine solution, 0.01%,</td><td>Sigma</td><td>P4707</td><td></td></tr><tr><td>cOmplete, Mini, EDTA-free Protease Inhibitor Cocktail</td><td>Roche</td><td>4693159001</td><td></td></tr><tr><td>Quantichrom Creatinine Assay Kit</td><td>BioAssay Systems</td><td>DICT-50&amp;nbsp;</td><td></td></tr><tr><td>Fluorescent dye - VivoTrack 680</td><td>Perkin Elmer</td><td>NEV12000&amp;nbsp;</td><td></td></tr><tr><td>RNAlater-ICE Frozen Tissue Transition Solution</td><td>Ambion</td><td>4427575</td><td></td></tr><tr><td>&lt;strong&gt;Name&lt;/strong&gt;</td><td>&lt;strong&gt;Company&lt;/strong&gt;</td><td>&lt;strong&gt;Catalog number&lt;/strong&gt;</td><td>&lt;strong&gt;Comments&lt;/strong&gt;</td></tr><tr><td>&lt;strong&gt;Equipment and Software&lt;/strong&gt;</td><td></td><td></td><td></td></tr><tr><td>7500 Realtime PCR System</td><td>Applied Biosystems</td><td></td><td></td></tr><tr><td>7500 Software v2.3</td><td>Applied Biosystems</td><td></td><td></td></tr><tr><td>Metabolic Cage</td><td>Tecniplast&amp;nbsp;</td><td>Vertical type rack for 12 cages</td><td></td></tr><tr><td>BD FACSCanto I system&amp;nbsp;</td><td>BD Biosciences</td><td></td><td></td></tr><tr><td>BD FACSDiva software v7</td><td>BD Biosciences</td><td></td><td></td></tr><tr><td>IVIS SpectrumCT &lt;em&gt;in vivo&lt;/em&gt; imaging system&amp;nbsp;</td><td>Caliper Life Sciences&amp;nbsp;</td><td></td><td></td></tr><tr><td>Living Image Software v3.1</td><td>Caliper Life Sciences&amp;nbsp;</td><td></td><td></td></tr><tr><td>Vevo 2100 imaging system&amp;nbsp;</td><td>VisualSonics&amp;nbsp;</td><td></td><td></td></tr></tbody></table>

a murine orthotopic bladder tumor model and tumor detection system

Questo protocollo descrive la generazione di tumori della vescica in topi C57BL / 6J femmina utilizzando la linea cellulare di cancro alla vescica murino MB49, che è stato modificato a secernere prostatico umano specifico (PSA), e la procedura per la conferma di impianto del tumore. In breve, i topi vengono anestetizzati con farmaci iniettabili e sono fatti per porre in posizione di dorsale. L&#39;urina è liberata dalla vescica e 50 ml di poli-L-lisina (PLL) viene lentamente instillato ad una velocità di 10 microlitri / 20 s utilizzando un catetere 24 G IV. Si lascia in vescica per 20 min in tappatura catetere. Il catetere viene rimosso e PLL è lasciata libera entro una leggera pressione sulla vescica. Questa è seguita da instillazione della linea cellulare di cancro alla vescica murino (1 x 10 5 cellule / 50 mL) ad una velocità di 10 ml / 20 s. Il catetere viene tappo per evitare evacuazione prematura. Dopo 1 h, i topi sono fatti rivivere con un farmaco inversione, e la vescica è liberate. Il tasso di instillazione lento è importante,poiché riduce il reflusso vescico-ureterale, che può causare tumori a verificarsi nel tratto urinario superiore e nei reni. La linea cellulare dovrebbe essere ben risospeso per ridurre aggregazione di cellule, come questo può portare a dimensioni tumorali irregolari dopo l&#39;impianto. Questa tecnica induce tumori con elevata efficienza. La crescita del tumore è monitorato da urinario secrezione di PSA. monitoraggio marcatore PSA è più affidabile di ultrasuoni o la fluorescenza per la rilevazione della presenza di tumori nella vescica. I tumori nei topi generalmente raggiungono una dimensione massima che influisce negativamente la salute di circa 3 - 4 settimane, se non trattata. Monitorando la crescita tumorale, è possibile differenziare topi che sono stati curati da quelli che non sono stati impiantati con successo con tumori. Con solo l&#39;analisi end-point, quest&#39;ultimo può essere erroneamente assume che sono stati curati con la terapia.

secrezione di PSA da cellule MB49 è risultata variare con i mezzi di crescita. MB49-PSA viene coltivato in DMEM media, perché questo si traduce in un aumento della secrezione del PSA (Figura 1A). Per determinare la sensibilità del PSA ELISA e PCR in tempo reale, diverso numero di MB49-PSA-secernenti cellule sono state mescolate con cellule parentali MB49. PSA ELISA rileva un minimo di 1 x 10 5 cellule secernenti PSA / 1 x 10 6 cellule (Fi...

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A Murine Orthotopic Bladder Tumor Model and Tumor Detection System

Questo protocollo descrive la generazione di tumori della vescica ortotopico murini in femmine C57BL 6J e il monitoraggio della crescita tumorale /.

Un tumore modello murino ortotopico della vescica e del tumore Detection System

This protocol describes the generation of bladder tumors in female C57BL/6J mice using the murine bladder cancer cell line MB49, which has been modified ...

a-murine-orthotopic-bladder-tumor-model-and-tumor-detection-system

Universidad de Cartagena UDEC

Research

JoVE Journal

Cancer Research

14.6K Views.  National University of Singapore, National University Health System.  Questo protocollo descrive la generazione di tumori della vescica ortotopico murini in femmine C57BL 6J e il monitoraggio della crescita tumorale /. 

Video: A Murine Orthotopic Bladder Tumor Model and Tumor Detection System

Murine Experimental Model of Original Tumor Development and Peritoneal Metastasis via Orthotopic Inoculation with Ovarian Carcinoma Cells

Epithelial ovarian carcinoma (EOC) is associated with a poor prognosis because it shows peritoneal dissemination. To improve the prognosis, it is important to control peritoneal dissemination. However, it is still unclear how tumor cells detach from primary lesions and attach to the mesothelium. The establishment of an appropriate animal model is needed to gain an understanding of the mechanism of peritoneal dissemination in vivo. In the current study, we introduce the process from the local injection of EOC cells into the murine ovarian surface to the development of metastasis, including the peritoneum and distant organs. Female nude mice (BALB/c nu/nu) at 8 weeks of age were used. Under a microscopic field of view, EOC cells (1 x 105 cells/&#181;l of medium-extracellular matrix (ECM)-based hydrogel/unilateral ovary/mouse) were injected into murine ovaries through a retroperitoneal approach from the dorsal flank. This proposed method is a less invasive procedure for the mouse and minimizes damage to the ovary. Here, we describe the methodological steps in the development of the original and metastatic tumor formation of EOC.

Murine Experimental Model of Original Tumor Development and Peritoneal Metastasis via Orthotopic Inoculation with Ovarian Carcinoma Cells

To clarify the multistep process of peritoneal dissemination of ovarian carcinoma, the current study presents a murine experimental model of original tumor development and peritoneal metastasis via orthotopic inoculation with these tumor cells.

Modello murino sperimentale di sviluppo del tumore originale e peritoneale Metastasi<em&gt; via</em&gt; Ortotopico inoculazione con cellule dell&#39;ovaio Carcinoma

Epithelial ovarian carcinoma (EOC) is associated with a poor prognosis because it shows peritoneal dissemination. To improve the prognosis, it is ...

Ricerca

Ricerca sul cancro

An Orthotopic Model of Murine Bladder Cancer

In this straightforward procedure, bladder tumors are established in female C57 mice through the use of catheterization, local cauterization, and subsequent cell adhesion. After their bladders are transurethrally catheterized and drained, animals are again catheterized to permit insertion of a platinum wire into bladders without damaging the urethra or bladder. The catheters are made of Teflon to serve as an insulator for the wire, which will conduct electrical current into the bladder to create a burn injury. An electrocautery unit is used to deliver 2.5W to the exposed end of the wire, burning away extracellular layers and providing attachment sites for carcinoma cells that are delivered in suspension to the bladder through a subsequent catheterization. Cells remain in the bladder for 90 minutes, after which the catheters are removed and the bladders allowed to drain naturally. The development of tumor is monitored via ultrasound. Specific attention is paid to the catheterization technique in the accompanying video.

Bladder tumors are established in female mice in a minimally invasive fashion through catheterization, local cauterization, and subsequent adhesion of carcinoma cells to the burn sites.

Un modello ortotopico di cancro alla vescica Murine

In this straightforward procedure, bladder tumors are established in female C57 mice through the use of catheterization, local cauterization, and ...

Medicina

Magnetic Resonance Imaging Assessment of Carcinogen-induced Murine Bladder Tumors

Murine bladder tumor models are critical for the evaluation of new therapeutic options. Bladder tumors induced with the N-butyl-N-(4-hydroxybutyl) nitrosamine (BBN) carcinogen are advantageous over cell line-based models because they closely replicate the genomic profiles of human tumors, and, unlike cell models and xenografts, they provide a good opportunity for the study of immunotherapies. However, bladder tumor generation is heterogeneous; therefore, an accurate assessment of tumor burden is needed before randomization to experimental treatment. Described here is a BBN mouse model and protocol to evaluate bladder cancer tumor burden in vivo using a fast and reliable magnetic resonance (MR) sequence (true FISP). This method is simple and reliable because, unlike ultrasound, MR is operator-independent and allows for the straightforward post-acquisition image processing and review. Using axial images of the bladder, analysis of regions of interest along the bladder wall and tumor allow for the calculation of bladder wall and tumor area. This measurement correlates with ex vivo bladder weight (rs= 0.37, p = 0.009) and tumor stage (p = 0.0003). In conclusion, BBN generates heterogeneous tumors that are ideal for evaluation of immunotherapies, and MRI can quickly and reliably assess tumor burden prior to randomization to experimental treatment arms.

Murine bladder tumors are induced with the N-butyl-N-(4-hydroxybutyl) nitrosamine carcinogen (BBN). Bladder tumor generation is heterogeneous; therefore, an accurate assessment of tumor burden is needed before randomization to experimental treatment. Here we present a fast, reliable MRI protocol to assess tumor size and stage.

La formazione immagine a risonanza magnetica valutazione dei tumori della vescica murino indotto da agente

Murine bladder tumor models are critical for the evaluation of new therapeutic options. Bladder tumors induced with the N-butyl-N-(4-hydroxybutyl) ...

An Orthotopic Bladder Tumor Model and the Evaluation of Intravesical saRNA Treatment

We present a novel method for treating bladder cancer with intravesically delivered small activating RNA (saRNA) in an orthotopic xenograft mouse bladder tumor model. The mouse model is established by urethral catheterization under inhaled general anesthetic. Chemical burn is then introduced to the bladder mucosa using intravesical silver nitrate solution to disrupt the bladder glycosaminoglycan layer and allows cells to attach. Following several washes with sterile water, human bladder cancer KU-7-luc2-GFP cells are instilled through the catheter into the bladder to dwell for 2 hours. Subsequent growth of bladder tumors is confirmed and monitored by in vivo bladder ultrasound and bioluminescent imaging. The tumors are then treated intravesically with saRNA formulated in lipid nanoparticles (LNPs). Tumor growth is monitored with ultrasound and bioluminescence. All steps of this procedure are demonstrated in the accompanying video.

Establishing an orthotopic bladder tumor model to evaluate antitumor effects of intravesically delivered saRNA and monitoring tumor growth by ultrasound and bioluminescent imaging.

Un modello ortotopico tumore della vescica e la valutazione del trattamento intravescicale sarna

We present a novel method for treating bladder cancer with intravesically delivered small activating RNA (saRNA) in an orthotopic xenograft mouse bladder ...

Culture, Manipulation, and Orthotopic Transplantation of Mouse Bladder Tumor Organoids

The development of advanced tumor models has long been encouraged because current cancer models have shown limitations such as lack of three-dimensional (3D) tumor architecture and low relevance to human cancer. Researchers have recently developed a 3D in vitro cancer model referred to as tumor organoids that can mimic the characteristics of a native tumor in a culture dish. Here, experimental procedures are described in detail for the establishment of bladder tumor organoids from a carcinogen-induced murine bladder tumor, including culture, passage, and maintenance of the resulting 3D tumor organoids in vitro. In addition, protocols to manipulate the established bladder tumor organoid lines for genetic engineering using lentivirus-mediated transduction are described, including optimized conditions for the efficient introduction of new genetic elements into tumor organoids. Finally, the procedure for orthotopic transplantation of bladder tumor organoids into the wall of the murine bladder for further analysis is laid out. The methods described in this article can facilitate the establishment of an in vitro model for bladder cancer for the development of better therapeutic options.

This protocol provides detailed experimental steps to establish a three-dimensional in vitro culture of bladder tumor organoids derived from carcinogen-induced murine bladder cancer. Culture methods including passaging, genetic engineering, and orthotopic transplantation of tumor organoids are described.

Cultura, manipolazione e trapianto ortotopico di organidi tumorali della vescica del topo

The development of advanced tumor models has long been encouraged because current cancer models have shown limitations such as lack of three-dimensional ...

An Orthotopic Bladder Cancer Model for Gene Delivery Studies

Bladder cancer is the second most common cancer of the urogenital tract and novel therapeutic approaches that can reduce recurrence and progression are needed. The tumor microenvironment can significantly influence tumor development and therapy response. It is therefore often desirable to grow tumor cells in the organ from which they originated. This protocol describes an orthotopic model of bladder cancer, in which MB49 murine bladder carcinoma cells are instilled into the bladder via catheterization. Successful tumor cell implantation in this model requires disruption of the protective glycosaminoglycan layer, which can be accomplished by physical or chemical means. In our protocol the bladder is treated with trypsin prior to cell instillation. Catheterization of the bladder can also be used to deliver therapeutics once the tumors are established. This protocol describes the delivery of an adenoviral construct that expresses a luciferase reporter gene. While our protocol has been optimized for short-term studies and focuses on gene delivery, the methodology of mouse bladder catheterization has broad applications.

Implantation of cancer cells into the organ of origin can serve as a useful preclinical model to evaluate novel therapies. MB49 bladder carcinoma cells can be grown within the bladder following intravesical instillation. This protocol demonstrates catheterization of the mouse bladder for the purpose of tumor implantation and adenoviral delivery.

Un ortotopico cancro della vescica Modello di Gene Studi di consegna

Bladder cancer is the second most common cancer of the urogenital tract and novel therapeutic approaches that can reduce recurrence and progression are ...

Minimally Invasive Establishment of Murine Orthotopic Bladder Xenografts

Orthotopic bladder cancer xenografts are the gold standard to study molecular cellular manipulations and new therapeutic agents&#160;in vivo. Suitable cell lines are inoculated either by intravesical instillation (model of nonmuscle invasive growth) or intramural injection into the bladder wall (model of invasive growth). Both procedures are complex and highly time-consuming. Additionally, the superficial model has its shortcomings due to the lack of cell lines that are tumorigenic following instillation. Intramural injection, on the other hand, is marred by the invasiveness of the procedure and the associated morbidity for the host mouse.
With these shortcomings in mind, we modified previous methods to develop a minimally invasive approach for creating orthotopic bladder cancer xenografts. Using ultrasound guidance we have successfully performed percutaneous inoculation of the bladder cancer cell lines UM-UC1, UM-UC3 and UM-UC13 into 50 athymic nude. We have been able to demonstrate that this approach is time efficient, precise and safe. With this technique, initially a space is created under the bladder mucosa with PBS, and tumor cells are then injected into this space in a second step. Tumor growth is monitored at regular intervals with bioluminescence imaging and ultrasound. The average tumor volumes increased steadily in in all but one of our 50 mice over the study period.
In our institution, this novel approach, which allows bladder cancer xenograft inoculation in a minimally-invasive, rapid and highly precise way, has replaced the traditional model.

The established technique to inoculate primary invasive orthotopic bladder cancer xenografts requires laparotomy and mobilization of the bladder. This procedure inflicts significant morbidity on the mice, is technically challenging and time-consuming. We therefore developed a high-precision, percutaneous approach utilizing ultrasound guidance.

Mini-Invasiva Istituzione di murini ortotopico vescica Xenotrapianti

Orthotopic bladder cancer xenografts are the gold standard to study molecular cellular manipulations and new therapeutic agents&#160;in vivo. Suitable ...

Establishing a Murine Superficial Bladder Cancer Model via an Intravesical Cell Administration Technique

This study presents an innovative method for establishing an orthotopic murine bladder tumor model with high efficiency and precise tumor localization. After anesthetizing female C57BL/6J mice in a supine position, a 24 G intravenous needle is inserted into the bladder to evacuate its contents. A 34 G dispensing needle is then introduced through the catheter, rotated five times to create a focal injury to the bladder dome mucosa, and subsequently removed. The MB49 cell suspension is aspirated and connected to a 30 G dispensing needle, which is inserted into the bladder via the catheter. Tumor cells are injected submucosally into the bladder under pressure. This technique results in minimal trauma to the mice, a high tumor take rate, and a fixed tumor location. It is characterized by simplicity and excellent reproducibility. This model provides an ideal experimental platform for developing intravesical therapies for bladder cancer, facilitating the advancement and optimization of treatment strategies for this malignancy.

This protocol describes a unique method for constructing an orthotopic model of superficial bladder cancer.

This study presents an innovative method for establishing an orthotopic murine bladder tumor model with high efficiency and precise tumor localization. ...

Bladder Tumor Organoid Model: A Method for Orthotopic Transplantation of Bladder Organoids into Recipient Murine Bladder

Source: Kim, Y. et al. <a href="https://jove.unicartagenaproxy.elogim.com/video/60469" target="_blank">Culture, Manipulation, and Orthotopic Transplantation of Mouse Bladder Tumor Organoids.</a>&#160;J. Vis. Exp.&#160;(2020)
In this video, we describe the orthotopic transplantation of cultured bladder tumor organoids into the murine bladder to study the role of the organ environment on developing tumors.

Modello di organoide tumorale della vescica: un metodo per il trapianto ortotopico di organoidi della vescica nella vescica murina ricevente

Source: Kim, Y. et al. Culture, Manipulation, and Orthotopic Transplantation of Mouse Bladder Tumor Organoids.&#160;J. Vis. Exp.&#160;(2020)
In this ...

JoVE Encyclopedia of Experiments

Urinary Tract Cancer

In vivo studies

Modeling Orthotopic Bladder Tumor in Mouse Model: A Procedure for Intravesical Administration of Cancer Cells into Murine Bladder

Source: Tham, S. M. et al. <a href="https://jove.unicartagenaproxy.elogim.com/video/55078" target="_blank">A Murine Orthotopic Bladder Tumor Model and Tumor Detection System.</a>&#160;J. Vis. Exp.&#160;(2017)
In this video, we describe the intravesical procedure of delivering cancer cells into the bladder of a mouse model. This procedure helps generate an orthotopic bladder tumor model that can be used to develop therapeutic strategies.

Modellazione del tumore ortotopico della vescica in un modello murino: una procedura per la somministrazione intravescicale di cellule tumorali nella vescica murina

Source: Tham, S. M. et al. A Murine Orthotopic Bladder Tumor Model and Tumor Detection System.&#160;J. Vis. Exp.&#160;(2017)
In this video, we describe ...