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The line is dependent on IL-2 for growth and can be used to measure IL-2 activity in a very rapid and sensitive assay.

The cells are commonly used for characterization of lymphokines and cytokines.

The HT-2 cell line was derived in 1979 by J. Watson at the University of Auckland from a culture of C57BL spleen cells activated by sheep erythrocytes in the presence of IL-2.

This cell line was originally deposited as derived from the BALB/c strain of mice. Recent testing at ATCC and by the NIST Mouse STR Consortium using mouse STR technology has shown that the STR profile has more alleles in common with a C57BL mouse strain rather than BALB/c.

Reference: https://www.ncbi.nlm.nih.gov/pubmed/31220119

In addition to IL-2, substantial proliferation is seen in the presence of interleukin 4 (interleukin-4, IL-4, also known as BSF-1).

Kupper T, et al. Growth of an interleukin-2/interleukin 4-dependent T cell line induced by granulocyte-macrophage colony-stimulating factor (GM-CSF). J. Immunol. 138: 4288-4292, 1987. PubMed: 2953804

Ho SN, et al. Differential bioassay of interleukin-2 and interleukin-4. J. Immunol. Methods 98: 99-104, 1987. PubMed: 3494085

Lee F, et al. Isolation and characterization of a mouse interleukin cDNa clone that expresses B-cell stimulatory factor 1 activities and T-cell and mast-cell-stimulating activities. Proc. Natl. Acad. Sci. USA 83: 2061-2065, 1986. PubMed: 3083412

Watson J. Continuous proliferation of murine antigen-specific helper T lymphocytes in culture. J. Exp. Med. 150: 1510-1519, 1979. PubMed: 92524

. . J. Biol. Response Modif. 4: 96-109, 1985.

Kupper T, et al. Autocrine growth of T cells independent of interleukin 2: identification of interleukin 4 (IL 4, BSF-1) as an autocrine growth factor for a cloned antigen-specific helper T cell. J. Immunol. 138: 4280-4287, 1987. PubMed: 2953803

Woods A, et al. Granulocyte-macrophage colony stimulating factor produced by cloned L3T4a+, class II-restricted T cells induces HT-2 cells to proliferate. J. Immunol. 138: 4293-4297, 1987. PubMed: 2953805

Kotanides H, Reich NC. Interleukin-4-induced STAT6 recognizes and activates a target site in the promoter of the interleukin-4 receptor gene. J. Biol. Chem. 271: 25555-25561, 1996. PubMed: 8810328