CD44v10 expression in the mouse and functional activity in delayed type hypersensitivity

Area of Science:

• Immunology
• Molecular Biology
• Cancer Research

Background:

• CD44 exon v10 (CD44v10) expression is altered during cancer metastasis.
• This variant isoform's specific functions and expression patterns require further investigation.

Purpose of the Study:

• To generate a CD44v10-specific monoclonal antibody for research.
• To define the expression pattern and functional role of CD44v10 in mice.

Main Methods:

• Monoclonal antibody generation against murine CD44v10.
• Analysis of CD44v10 expression in various mouse tissues and developmental stages.
• In vivo functional studies using anti-CD44v10, including wound healing and delayed type hypersensitivity (DTH) models.
• Investigation of lymphocyte-monocyte interactions and cell adhesion in transfected tumor lines.

Main Results:

• CD44v10 expression was found in specific epithelial layers, bone marrow, and activated lymphocytes in mice, with expression beginning late in gestation.
• Anti-CD44v10 treatment inhibited edema and granuloma formation in DTH responses but did not affect wound healing.
• Lymphocyte-monocyte interactions were inhibited by anti-CD44v10, and CD44v10-transfected tumor cells showed no distinct adhesion patterns.
• Data suggest CD44v10 involvement in cell migration, potentially as a receptor for cytokine/chemokine signaling.

Conclusions:

• CD44v10 plays a role in immune responses, specifically inhibiting edema and granuloma formation in DTH.
• CD44v10 may regulate cell migration by interacting with cytokine/chemokine signaling pathways.
• Further research is warranted to elucidate the precise mechanisms of CD44v10 in cell migration and immune modulation.