retinal permeability

PB2, a tris(2-carboxyethyl)phosphine (TCEP) analogue, enhances the survival of retinal ganglion cells (RGCs) following axotomy in vitro. Even at nanomolar and picomolar concentrations, PB2 demonstrates pronounced efficacy in promoting RGC survival. Notably, PB2 exhibits superior permeability compared to TCEP. Serving as a potent reducing agent, PB2 provides robust neuroprotection for RGCs[1].

Angiogenesis inhibitor BT2 is a novel inhibitor of angiogenesis and vascular permeability, inhibiting ERK phosphorylation and the expression of FosB/ΔFosB, VCAM-1, and many genes involved in proliferation, migration, angiogenesis, and inflammation, interacting with MEK1, suppressing retinal CD31, pERK, VCAM-1, and VEGF-A165 expression.

PB1 is a highly-effective intracellular disulfide reducing agent with notable attributes such as excellent cell permeability, the capacity to generate a substantial intracellular concentration gradient, and remarkable stability. It serves as a borane-protected TCEP (tris(2-carboxyethyl)phosphine) analogue. PB1 demonstrates the potential to enhance the survival of retinal ganglion cells following axotomy in vitro at concentrations in the nanomolar and picomolar range. Consequently, PB1 has proven instrumental in the study of neuroprotective properties[1][2][3].

Abicipar pegol (AGN-150998, MP0112), an anti-VEGF DARPin molecule, represents a novel class of small ankyrin repeat domain-containing proteins designed for high specificity and affinity targeting. This compound is adept at inhibiting angiogenesis and vascular permeability. It has seen applicative use in ocular inflammation-related disease studies through intravitreal injections, notably decreasing mean retinal thickness and leakage area [1] [2].

PKC-IN-4 (compound 7l) is a highly potent and orally active inhibitor of atypical protein kinase C (aPKC), exhibiting an IC 50 value of 0.52 μM. In vitro studies have demonstrated that PKC-IN-4 effectively suppresses NF-κB activity induced by TNF-α. Moreover, this compound effectively impedes the permeability of the retinal vasculature, induced by both VEGF and TNFα. [1]

SPHINX31 is a potent inhibitor of serine/arginine-rich protein kinase 1 (SRPK1; IC50: 5.9 nM).