Scara5-flox Mouse

Scavenger receptor class A member 5 (SCARA5) is a gene that has been implicated in multiple biological processes and disease conditions. While its exact normal cellular functions are still being elucidated, it is believed to play important roles in pathways related to cell growth, migration, and invasion. Its dysregulation has been associated with the development and progression of various cancers, suggesting its significance in tumorigenesis [1,2,3,4,5,6,7,8,9].

In gastric cancer, SCARA5 expression is downregulated due to promoter methylation, and its overexpression suppresses tumor growth, migration, and invasion both in vitro and in xenograft models by inhibiting epithelial-mesenchymal transition (EMT) and inactivating MMP-2 and MMP-9 [1]. In colorectal cancer, bone marrow stromal cell-derived exosomes containing SCARA5 inhibit cancer cell growth and motility, and knockdown of SCARA5 in these exosomes promotes cell proliferation and movement. Exosomal SCARA5 also suppresses tumor growth in mouse xenografts by inactivating the PI3K/Akt pathway [3]. In bladder cancer, SCARA5 expression is downregulated, and its overexpression reduces cell viability, colony formation, invasion, and migration. It is a downstream factor of the PCAT29/miR-141 axis [4]. In oral squamous cell carcinoma, SCARA5 overexpression inhibits cell proliferation, induces apoptosis, and represses EMT by inactivating the STAT3 and PI3K/AKT signaling pathways [5]. In esophageal squamous cell carcinoma, SCARA5 is decreased, and its overexpression suppresses cell cycle, metastasis, and invasion by inducing ferroptosis through combining with ferritin light chain [6]. In nasopharyngeal carcinoma, SCARA5 is downregulated by promoter methylation, and its overexpression inhibits cell migration, invasion, and proliferation, and enhances sensitivity to chemotherapy [7]. In melanoma, decreased SCARA5 expression is associated with poor prognosis, and it is related to the level of immune infiltration [9].

In conclusion, SCARA5 is involved in multiple cancer-related biological processes such as cell growth, migration, invasion, and apoptosis. Its dysregulation contributes to the development and progression of various cancers. Research using in vivo models like xenograft mouse models has been crucial in understanding the role of SCARA5 in these disease conditions, providing insights into its potential as a biomarker and therapeutic target for cancer treatment.