Fbln5-flox Mouse

Fbln5, also known as fibulin 5, is an extracellular matrix (ECM) glycoprotein. It plays crucial roles in maintaining the stability of ECM structures, regulating cell proliferation, and is involved in interactions with components of the basement membrane and extracellular matrix proteins [5,6]. It has been implicated in many biological processes related to vascular and other tissues, and its study via genetic models can provide insights into its functions.

Fbln5 is significantly related to the poor prognosis of gastric cancer (GC) patients, with high FBLN5 mRNA levels associated with a poor prognosis and high expression levels correlated with INFc and N3 lymph node metastasis. It is an independent risk factor for GC patient prognosis [1]. In high-grade serous ovarian carcinoma, decreased FBLN5 expression is associated with unfavorable prognosis, and its overexpression inhibits migration, invasion, and proliferation of ovarian cancer cells [5]. In carotid atherosclerosis, low FBLN5 expression in plaque tissues is related to plaque stability, and it may act mainly through the maintenance of the cellular matrix and reactive oxygen species production [6]. In renal clear cell carcinoma in children and young adults, FBLN5 expression was significantly reduced in tumor tissue compared to normal adjacent tissue, and high expression was associated with a favorable prognosis [4]. Mutations in FBLN5 are related to FBLN5-related cutis laxa syndrome, which is characterized by loose skin, emphysema, and other symptoms [2], and also to demyelinating Charcot-Marie-Tooth neuropathy, with patients having a later age of diagnosis and distinct clinical features [3].

In conclusion, Fbln5 is essential for maintaining the stability of ECM and has a significant impact on multiple biological processes and disease conditions. Its study, especially through gene knockout or conditional knockout models (although not explicitly detailed in provided references), could potentially further clarify its functions in these disease areas such as cancer, connective tissue disorders, and neurological diseases.