Characterization of a B16-F10 melanoma model locally implanted into the ear pinnae of C57BL/6 mice

Potez, Marine Therese Charlette; Trappetti, Verdiana; Bouchet, Audrey Michele; Fernandez-Palomo, Cristian; Güç, Esra; Kilarski, Witold W.; Hlushchuk, Ruslan; Laissue, Jean; Djonov, Valentin Georgiev (2018). Characterization of a B16-F10 melanoma model locally implanted into the ear pinnae of C57BL/6 mice. PLoS ONE, 13(11), e0206693. Public Library of Science 10.1371/journal.pone.0206693

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The common experimental use of B16-F10 melanoma cells focuses on exploring their metastatic potential following intravenous injection into mice. In this study, B16-F10 cells are used to develop a primary tumor model by implanting them directly into the ears of C57BL/6J mice. The model represents a reproducible and easily traceable tool for local tumor growth and for making additional in vivo observations, due to the localization of the tumors. This model is relatively simple and involves (i) surgical opening of the ear skin, (ii) removal of a square-piece of cartilage followed by (iii) the implantation of tumor cells with fibrin gel. The remodeling of the fibrin gel within the cartilage chamber, accompanying tumor proliferation, results in the formation of blood vessels, lymphatics and tissue matrix that can be readily distinguished from the pre-existing skin structures. Moreover, this method avoids the injection-enforced artificial spread of cells into the pre-existing lymphatic vessels. The tumors have a highly reproducible exponential growth pattern with a tumor doubling time of around 1.8 days, reaching an average volume of 85mm3 16 days after implantation. The melanomas are densely cellular with proliferative indices of between 60 and 80%. The induced angiogenesis and lymphangiogenesis resulted in the development of well-vascularized tumors. Different populations of immunologically active cells were also present in the tumor; the population of macrophages decreases with time while the population of T cells remained quasi constant. The B16-F10 tumors in the ear frequently metastasized to the cervical lymph nodes, reaching an incidence of 75% by day 16. This newly introduced B16-F10 melanoma model in the ear is a powerful tool that provides a new opportunity to study the local tumor growth and metastasis, the associated angiogenesis, lymphangiogenesis and tumor immune responses. It could potentially be used to test different treatment strategies.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Anatomy
04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Anatomy > Topographical and Clinical Anatomy
09 Interdisciplinary Units > Microscopy Imaging Center MIC

Graduate School:

Graduate School for Cellular and Biomedical Sciences (GCB)

UniBE Contributor:

Potez, Marine Therese Charlette; Trappetti, Verdiana; Bouchet, Audrey Michele; Fernandez-Palomo, Cristian; Hlushchuk, Ruslan; Laissue, Jean and Djonov, Valentin Georgiev

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1932-6203

Publisher:

Public Library of Science

Language:

English

Submitter:

David Christian Haberthür

Date Deposited:

21 Nov 2018 13:44

Last Modified:

19 Feb 2019 10:49

Publisher DOI:

10.1371/journal.pone.0206693

PubMed ID:

30395629

BORIS DOI:

10.7892/boris.121353

URI:

https://boris.unibe.ch/id/eprint/121353

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