Map2k6-flox Mouse

Map2k6, also known as Mitogen-activated protein kinase kinase 6 (Mkk6), is a key kinase in the mitogen-activated protein kinase (MAPK) pathway. It plays important roles in various biological processes. Phosphorylation signaling mediated by Map2k6 is involved in chromatin protein modifications, which is crucial for epigenetic regulation [1].

In somatic cell reprogramming, Map2k6 acts as a chromatin relaxer, enhancing the reprogramming process. Its function in heterochromatin loosening and reprogramming depends on its kinase activity but not on its well-known target, P38. It phosphorylates Gatad2b, which in turn elevates histone acetylation levels, loosens heterochromatin, and promotes pluripotency gene expression [1].

In Polycystic Ovary Syndrome (PCOS), circASPH promotes KGN cells proliferation through the miR-375/MAP2K6 axis, and circ_0005925 promotes granulosa cell growth by targeting miR-324-3p to upregulate MAP2K6, suggesting its role in PCOS development [2,5].

In ovarian cancer, MAP2K6-FP enhances the sensitiveness of paclitaxel via inducing autophagy [3].

In nasopharyngeal carcinoma, high expression of MAP2K6 is associated with radiation resistance and adverse prognosis [4].

In hepatocellular carcinoma, APEX1 promotes the oncogenicity via regulation of MAP2K6 [6].

In chondrocytes, circRNA-MSR regulates LPS-induced injury through the miR-643/MAP2K6 signaling pathway [7].

In gut stem cells, mTORC1-induced activation of Map2k6 leads to stem cell aging via the p38 MAPK-p53 pathway [8]. Also, down-regulation of lncRNA MAGI2-AS3 delays cell senescence through suppression of the ROS/MAP2K6/p38 signaling pathway [9].

In conclusion, Map2k6 is involved in a wide range of biological processes and disease conditions. Studies using various models, though not specifically KO/CKO mouse models in the provided references, have revealed its significance in processes like reprogramming, cell proliferation, apoptosis, and in diseases such as PCOS, ovarian cancer, nasopharyngeal carcinoma, hepatocellular carcinoma, and in cell aging and injury. Understanding Map2k6's functions provides insights into the underlying mechanisms of these biological processes and diseases, potentially guiding the development of new therapeutic strategies.