Laminin subunit beta-1 mRNA (LAMB1 mRNA) (LAMB1 mRNA)

Laminin subunit beta-1 (LAMB1) mRNA is the transcript responsible for the synthesis of the beta-1 polypeptide chain, a critical component of several laminin heterotrimers, including laminin-411 (alpha-4, beta-1, gamma-1) and laminin-511 (alpha-5, beta-1, gamma-1) (UniProt P07942). These laminins are essential for the structural integrity of the vascular basement membrane and play significant roles in cell adhesion, signaling, and migration. In high-grade gliomas like glioblastoma multiforme, laminin-411 is markedly upregulated in tumor-associated blood vessels, where it facilitates tumor-induced angiogenesis and the invasion of malignant cells into the brain parenchyma (Ljubimova et al., 2004, PubMed 15150592). Therapeutic strategies targeting LAMB1 mRNA utilize antisense oligonucleotides (ASOs) or RNA interference to selectively reduce the levels of the beta-1 protein, thereby disrupting the assembly of these pro-angiogenic laminin isoforms (Ding et al., 2010, PubMed 20538982). Experimental delivery systems, such as the nanoconjugate Polycefin, have been developed to transport these ASOs across the blood-brain barrier, demonstrating the ability to inhibit tumor growth and vascularization in preclinical models (Fujita et al., 2006, PubMed 16432175). This target represents a novel approach in precision medicine, aiming to modulate the tumor microenvironment by silencing specific extracellular matrix components at the genetic level.

Other names

Laminin-411 beta-1 mRNALaminin B1 mRNALAMB1Laminin-8 beta chain mRNALaminin-10 beta chain mRNA

Antisense-mediated mRNA degradation and translation inhibition leading to reduced protein expression of laminin-411 and laminin-511 isoforms.