Open Access

The role of immune cell subpopulations in the growth and rejection of TC‑1/A9 tumors in novel mouse strains differing in the H2‑D haplotype and NKC domain

  • Authors:
    • Marie Indrová
    • Joanna Rossowska
    • Elzbieta Pajtasz‑Piasecka
    • Romana Mikyšková
    • Jan Richter
    • Jozef Rosina
    • Radislav Sedlacek
    • Anna Fišerová
  • View Affiliations

  • Published online on: January 10, 2018     https://doi.org/10.3892/ol.2018.7763
  • Pages: 3594-3601
  • Copyright: © Indrová et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The present study aimed to elucidate the role of cluster of differentiation (CD)8+, CD4+, natural killer (NK), and myeloid (CD11b+) cells in the course of the growth and rejection of experimental major histocompatibility complex (MHC) class I‑deficient, HPV16 E6/E7‑associated TC‑1/A9 tumors in mice. Stable mouse lines (F30) generated by inbreeding of Balb/c and C57BL/6 strains, which were characterized by H‑2Db+d‑NK1.1neg (B6‑neg) and H‑2Db‑d+NK1.1high (Balb‑high) phenotypes, were used for the present study. The novel strains spontaneously regressed tumors in 70‑90% of cases. Ex vivo histological analysis of the tumor microenvironment in cryosections showed an indirect correlation between the growth of the transplanted tumor (progressor vs. regressor mice) and the proportion of immunocompetent cell infiltration in the tumors. The regressor mice exhibited a higher infiltration of tumors with CD4+ and CD8+ cells, and in Balb‑high with NK cells as well, compared with the progressors. All tumor transplants also indicated a huge infiltration of CD11b+ cells, but this infiltration was not dependent on the stage of the TC‑1/A9 tumor development. Depletion of individual cell subpopulations in vivo exhibited different effects on the tumor development in the two strains. Elimination of CD8‑positive cells enhanced growth of TC‑1/A9 tumor transplants in both hybrid stains, whereas CD4+ cell depletion affected rejection of TC‑1/A9 tumors in the B6‑neg mice only. Depletion of NK cells with anti‑asialo GM1 antibody in the Balb‑high strain led to enhancement of tumor growth, which was more pronounced after depletion of the NK1.1+ subpopulation. On the other hand, depletion of NK cells with anti‑asialo GM1 in B6‑neg mice did not affect the regression of TC‑1/A9 tumor transplants, but increased the CD11b+ cell infiltration. In summary, these results indicate that co‑operation of particular subsets of immunocompetent cells is essential for the rejection of TC‑1/A9 tumor transplants. In B6‑neg mice, the co‑operative action of CD8+ and CD4+ cells is required, whereas in Balb‑high mice, the synergy of CD8+ and NK1.1+ cells is of major importance.
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March-2018
Volume 15 Issue 3

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Spandidos Publications style
Indrová M, Rossowska J, Pajtasz‑Piasecka E, Mikyšková R, Richter J, Rosina J, Sedlacek R and Fišerová A: The role of immune cell subpopulations in the growth and rejection of TC‑1/A9 tumors in novel mouse strains differing in the H2‑D haplotype and NKC domain. Oncol Lett 15: 3594-3601, 2018
APA
Indrová, M., Rossowska, J., Pajtasz‑Piasecka, E., Mikyšková, R., Richter, J., Rosina, J. ... Fišerová, A. (2018). The role of immune cell subpopulations in the growth and rejection of TC‑1/A9 tumors in novel mouse strains differing in the H2‑D haplotype and NKC domain. Oncology Letters, 15, 3594-3601. https://doi.org/10.3892/ol.2018.7763
MLA
Indrová, M., Rossowska, J., Pajtasz‑Piasecka, E., Mikyšková, R., Richter, J., Rosina, J., Sedlacek, R., Fišerová, A."The role of immune cell subpopulations in the growth and rejection of TC‑1/A9 tumors in novel mouse strains differing in the H2‑D haplotype and NKC domain". Oncology Letters 15.3 (2018): 3594-3601.
Chicago
Indrová, M., Rossowska, J., Pajtasz‑Piasecka, E., Mikyšková, R., Richter, J., Rosina, J., Sedlacek, R., Fišerová, A."The role of immune cell subpopulations in the growth and rejection of TC‑1/A9 tumors in novel mouse strains differing in the H2‑D haplotype and NKC domain". Oncology Letters 15, no. 3 (2018): 3594-3601. https://doi.org/10.3892/ol.2018.7763