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Generation of Multivirus-specific T Cells to Prevent/treat Viral Infections after Allogeneic Hematopoietic Stem Cell Transplant
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Published on: May 27, 2011

Immunological prevention of a multigene cancer syndrome

Stefania Croci1, Giordano Nicoletti, Lorena Landuzzi

  • 1Cancer Research Section, Department of Experimental Pathology, University of Bologna, Bologna, Italy.

Cancer Research
|November 19, 2004
PubMed

Insights

Prophylactic vaccines targeting HER-2/neu prevented aggressive cancers in mice. This powerful immune response, involving T cells and antibodies, halted multistep carcinogenesis, demonstrating vaccine potential against complex cancers.

Area of Science:

  • Oncology
  • Immunology
  • Cancer Genetics

Background:

  • Human tumors arise from combined oncogene and oncosuppressor gene alterations.
  • Transgenic mice models are crucial for studying cancer development and prevention.

Purpose of the Study:

  • To evaluate the efficacy of prophylactic vaccines in HER-2/neu transgenic mice with p53 wild-type/null background.
  • To investigate the immune mechanisms underlying vaccine-induced tumor prevention.

Main Methods:

  • Utilized HER-2/neu transgenic mice prone to aggressive cancers.
  • Administered a vaccine composed of allogeneic mammary carcinoma cells expressing HER-2/neu and interleukin 12.
  • Assessed tumor onset, immune responses (cytokines, antibodies), and p53 gene status.

Main Results:

  • Vaccination provided long-term protection against tumor development.
  • Tumor prevention was mediated by T cell-derived cytokines (gamma-interferon) and anti-HER-2/neu antibodies.
  • HER-2/neu expression decreased in target tissues, and wild-type p53 loss was prevented.

Conclusions:

  • A vaccine targeting a single oncoprotein can elicit a robust immune response.
  • This immune response effectively halts multistep carcinogenesis in multiple tissues.
  • Prophylactic vaccination shows promise for preventing complex, aggressive cancers.

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