Interleukin 24 (IL-24) is a protein in the interleukin family, a type of cytokine signaling molecule in the immune system. In humans, this protein is encoded by the IL24gene.
IL-24 is a cytokine belonging to the IL-10 family of cytokines that signals through two heterodimeric receptors: IL-20R1/IL-20R2 and IL-22R1/IL-20R2. This interleukin is also known as melanoma differentiation-associated 7 (mda-7) due to its discovery as a tumour suppressing protein. IL-24 appears to control cell survival and proliferation by inducing rapid activation of particular transcription factors called STAT1 and STAT3. This cytokine is predominantly released by activated monocytes, macrophages and T helper 2 (Th2) cells[5] and acts on skin, lung, and reproductive tissues. IL-24 performs important roles in wound healing, arthritis, psoriasis and cancer.[6][7][8] Several studies have shown that cell death occurs in cancer cells/cell lines following exposure to IL-24.[9][10] The gene for IL-24 is located on chromosome 1 in humans.[11]
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^Poindexter NJ, Walch ET, Chada S, Grimm EA (September 2005). "Cytokine induction of interleukin-24 in human peripheral blood mononuclear cells". Journal of Leukocyte Biology. 78 (3): 745–52. doi:10.1189/jlb.0205116. PMID16000394. S2CID1329942.
^Sauane M, Lebedeva IV, Su ZZ, Choo HT, Randolph A, Valerie K, et al. (May 2004). "Melanoma differentiation associated gene-7/interleukin-24 promotes tumor cell-specific apoptosis through both secretory and nonsecretory pathways". Cancer Research. 64 (9): 2988–93. doi:10.1158/0008-5472.CAN-04-0200. PMID15126330.