Role of interleukin-32 in the pathogenesis of endometriosis: in vitro, human and transgenic mouse data

Autor: Byung Moon Kang, Seung-Ho Heo, Kang-Hyun Kim, Chung-Hoon Kim, Mi-Young Lee, Hee Dong Chae, Young Sang Oh, Sung-Hoon Kim
Rok vydání: 2017
Předmět:
Zdroj: Human reproduction (Oxford, England). 33(5)
ISSN: 1460-2350
Popis: Study question Does interleukin-32 (IL-32) play a role in the pathogenesis of endometriosis? Summary answer IL-32 might be involved in the pathogenesis of endometriosis through increased viability, proliferation and invasion of endometrial cells. What is known already Endometriosis is characterized as a chronic inflammatory disease and several proinflammatory cytokines are suggested to be involved in its pathogenesis and pathophysiology. IL-32, recognized as a new proinflammatory cytokine and a strong inducer of other proinflammatory cytokines, has been shown to serve as a key modulator in several chronic inflammatory diseases. Study design, size, duration This study included comparison of IL-32 levels in the peritoneal fluids between women with and without endometriosis, in-vitro experiments using Ishikawa cells and endometrial stromal cells (ESCs), and experiments on IL-32 transgenic mice and wild-type mice with induced endometriosis. Participants/materials, setting, methods IL-32 levels in the peritoneal fluids were measured using enzyme-linked immunosorbent assays. Cell viability, expression of proliferating cell nuclear antigen (PCNA), and cellular invasiveness were analyzed following in-vitro treatment of Ishikawa cells and ESCs with recombinant IL-32 alpha (α) and gamma (γ). Ectopic endometriotic lesions were compared between IL-32 transgenic mice and wild-type mice after autologous endometrial transplantation with immunohistochemistry for Ki-67 antigen and PCNA. Main results and the role of chance The peritoneal fluid concentration of IL-32 was significantly higher in patients with advanced stage endometriosis compared with the controls. In-vitro treatment with IL-32 α and γ caused significant increases in cellular viability, PCNA expression, and invasiveness in Ishikawa cells and ESCs. The IL-32 transgenic mice had a significantly larger size of the ectopic endometrial lesions with higher expression of Ki-67 antigen and PCNA compared with wild-type mice. Large scale data N/A. Limitations, reasons for caution It is still unclear whether IL-32 is a main regulator, or one of several downstream proinflammatory cytokines, causing establishment and/or progression of endometriosis. Wider implications of the findings Further investigation on IL-32 signaling pathways may contribute to development a more effective treatment of endometriosis. Study funding/competing interest(s) This research was supported by a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea (Grant number: HI16C1682). None of the authors has anything to disclose.
Databáze: OpenAIRE