中文摘要：

JAK/STAT是多种细胞因子和生长因子信号转导的重要途径，参与细胞增殖、分化以及免疫调节等多个过程，在肿瘤中的持续性激活可促进肿瘤的发生发展。目前研究发现在淋巴瘤中有STAT3异常表达和活化，其活化与肿瘤生长、侵袭及转移有关。AG490是JAK2抑制剂，可有效地抑制其下游的STAT的活化，阻断JAK/STAT信号转导通路。既往研究证实AG490能抑制淋巴瘤细胞的增殖，促进其凋亡，可提高某些化疗药物的敏感性。本文就JAK/STAT通路及其阻断剂AG490在淋巴瘤中的研究进展作一综述。

英文摘要：

JAK/STAT includes many types of cell factors. Growth factor signal transduction is an important pathway and widely participates in cell multiplication, differentiation, and immunity adjustment. Aberrant-activated JAK/STAT signaling pathway is involved in carcinogenesis. Recent studies demonstrated that abnormal expression and activation of STAT3 were found in lymphoma. Constitutive activation of STAT3 promotes development, invasion, and metastasis of cancer. AG490, a JAK2 inhibitor, can block the JAK/STAT3 signal pathway and reduce the pathway＇s downstream STAT3 expression. Several studies showed that AG490 can inhibit cell proliferation and promote apoptosis in lymphoma. AG490 combined with chemotherapy drugs could improve sensitivity. In our study, we reviewed the potential role of JAK/STAT signaling pathway and the blocker AG490 in lymphoma.