Summary
Mouse bladder wall injection is a useful approach to orthotopically study bladder stem cell and cancer biology. This delicate microsurgical method can be mastered with careful technique and practice.
Abstract
Mouse bladder wall injection is a useful technique to orthotopically study bladder phenomena, including stem cell, smooth muscle, and cancer biology. Before starting injections, the surgical area must be cleaned with soap and water and antiseptic solution. Surgical equipment must be sterilized before use and between each animal. Each mouse is placed under inhaled isoflurane anesthesia (2-5% for induction, 1-3% for maintenance) and its bladder exposed by making a midline abdominal incision with scissors. If the bladder is full, it is partially decompressed by gentle squeezing between two fingers. The cell suspension of interest is intramurally injected into the wall of the bladder dome using a 29 or 30 gauge needle and 1 cc or smaller syringe. The wound is then closed using wound clips and the mouse allowed to recover on a warming pad. Bladder wall injection is a delicate microsurgical technique that can be mastered with practice.
Protocol
Discussion
Mouse bladder wall injection allows for the implantation of specific cells into defined areas of the bladder wall. This technique has wide applications for mouse models of bladder cancer, smooth muscle, and stem cell biology. By definition, mouse bladder wall injection facilitates introduction of bladder cancer or stem cells into an orthotopic location so that their growth and differentiation can be studied in a physiologically relevant anatomic context. In fact, Dinney et al. first described this technique in order to s…
Declarações
The authors have nothing to disclose.
Acknowledgements
We gratefully acknowledge the support of a Pilot grant from the Stanford Pediatric Research Fund and K08DK087895-01 from the NIDDK.
Materials
| Name of the reagent | Company | Catalogue number |
| Isoflurane (Aerrane) | Baxter | NDC 10019-773-60 |
| 29 or 30 gauge needles | Hamilton | 7803-06 or 7803-07 |
| 100 microliter syringe | Hamilton | 7656-01 |
Referências
- Dinney, C. P., Fishbeck, R., Singh, R. K., Eve, B., Pathak, S., Brown, N., Xie, B., Fan, D., Bucana, C., Fidler, I. J., Killion, J. J. Isolation and Characterization of Metastatic Variants from Human Transitional Cell Carcinoma Passaged by Orthotopic Implantation in Athymic Nude Mice. The Journal of Urology. 154, 1532-1538 (1995).
- Singh, A. V., Franke, A. A., Blackburn, G. L., Zhou, J. Soy Phytochemicals Prevent Orthotopic Growth and Metastasis of Bladder Cancer in Mice by Alterations of Cancer Cell Proliferation and Apoptosis and Tumor Angiogenesis. Cancer Res. 66, 1851-1858 (2006).
- Yanagiuchi, A., Miyake, H., Nomi, M., Takenaka, A., Fujisawa, M. Modulation of the Microenvironment by Growth Factors Regulates the In Vivo Growth of Skeletal Myoblasts. BJU International. 103, 1569-1573 (2009).
- Miyake, H., Hara, I., Yamanaka, K., Gohji, K., Arakawa, S., Kamidono, S. Overexpression of Bcl-2 Enhances Metastatic Potential of Human Bladder Cancer Cells. British Journal of Cancer. 79, 1651-1656 (1999).
- Chancellor, M. B., Yokoyama, T., Tirney, S., Mattes, C. E., Ozawa, H., Yoshimura, N., Groat, W. C. d. e., Huard, J. Preliminary Results of Myoblast Injection into the Urethra and Bladder Wall: a Possible method for the Treatment of Stress Urinary Incontinence and Impaired Detrusor Contractility. Neurourol Urodyn. 19, 279-287 (2000).
- Dinney, C. P., Tanguay, S., Bucana, C. D., Eve, B. Y., Fidler, I. J. Intravesical Liposomal Muramyl Tripeptide Phosphatidylethanolamine Treatment of Human Bladder Carcinoma Growing in Nude Mice. J Interferon Cytokine Res. 15, 585-592 (1995).
- Mohamedali, K. A., Kedary, D., Sweeney, P., Kamaty, A., Davisy, D. W., Evey, B. Y., Huangy, S., Thorpez, P. E., Dinney, C. P., Rosenblum, M. G. The Vascular-targeting Fusion toxin VEGF121/rGel Inhibits the Growth of Orthotopic Human Bladder Carcinoma Tumors. Neoplasia. 7, 912-920 (2005).
- Slaton, J. W., Perrotte, P., Inoue, K., Dinney, C. P., Fidler, I. J. Interferon-α-mediated Down-Regulation of Angiogenesis-related Genes and Therapy of Bladder Cancer Are Dependent on Optimization of Biological Dose and Schedule. Clinical Cancer Research. 5, 2726-2734 (1999).
- Yokoyama, T., Huard, J., Pruchnic, R., Yoshimura, N., Qu, Z., Cao, B., De Groat, W. C., Kumon, H., Chancellor, M. B. Muscle-Derived Cell Transplantation and Differentiation into Lower Urinary Tract Smooth Muscle. Urology. 57, 826-831 (2001).
- Chan, E., Patel, A., Heston, W., Larchian, W. Mouse Orthotopic Models for Bladder Cancer Research. BJU International. 104, 1286-1291 (1988).
- Russell, P. J., Jelbart, M., Wills, E., Singh, S., Wass, J., Witherspoon, J., Raghavan, D. Establishment and characterization of a new human bladder cancer cell line showing features of squamous and glandular differentiation. Int. J. Cancer. 41, 74-74 (1988).
- Ahlering, T. E., Dubeau, L., Jones, P. A. A new in vivo model to study invasion and metastasis of human bladder carcinoma. Cancer Res. 41, 6660-6660 (1987).
- Heaney, J. A., Omellas, E. P., Daly, J. J., Lin, J. C., Rout, G. R. In vivo growth of human bladder cancer cell lines. Invest. Urol. 15, 380-380 (1978).
- Hadaschik, B., Black, P., Sea, J., Metwalli, A., Fazli, L., Dinney, C., Gleave, M., So, A. A validated mouse model for orthotopic bladder cancer using transurethral tumor inoculation and bioluminescence imaging. BJU International. 100, 1377-1384 (2007).
