Abstract: The present disclosure provides polypeptides comprising an N-terminal portion(s) of Apolipoprotein B100 (ApoB100), or functional derivatives thereof, particularly polypeptides may be capable of, e.g., inhibiting scavenger receptor-B1 (SR-B1) and/or activin receptor-like kinase 1 (ALK1). Further provided are related polynucleotides, vectors, and pharmaceutical compositions. Methods for blocking endothelial cell uptake and/or transcytosis of lipoproteins comprising chylomicrons, low-density lipoprotein (LDL), very-low-density lipoprotein (VLDL), and/or lipoprotein (a) (Lp(a)) and treating atherosclerosis using the polypeptides and/or pharmaceutical compositions are also provided.

Abstract: MicroRNAs can be used to decrease expression of apolipoprotein B (apoB), increase expression of apolipoprotein A (apoA), and decrease expression of NCOR1. Use of these microRNAs can simultaneously reduce LDL and increase HDL in circulation and have applications in prevention and treatment of atherosclerosis, hyperlipidemia, and cardiovascular disease as well as other disorders associated with high apoB and/or low apoAI levels.

Abstract: The present invention is directed to a composition and method for the treatment of hyperlipidemias by targeting Microsomal triglyceride transfer protein (MTP). In particular, the present invention is directed to a combination of at least one MTP inhibitor and at least one lipid-lowering agent, both in an amount effective to treat hyperlipidemias.

Abstract: The present invention is directed to a composition and method for the treatment of hyperlipidemias by targeting Microsomal triglyceride transfer protein (MTP). In particular, the present invention is directed to a combination of at least one MTP inhibitor and at least one lipid-lowering agent, both in an amount effective to treat hyperlipidemias.

Abstract: The present invention is directed to methods for assaying microsomal triglyceride transfer protein (MTP) which are amenable to automation and high throughput screening. The assays may be used to measure MTP activity in cell and tissue homogenates as well as purified MTP. Also provided are methods of measuring levels of lipids transferred by MTP. The methods provided by the present invention have the advantages of ease, rapidity, sensitivity, avoidance of the use of radioactivity, versatility in studying different lipid transfer activities by purified and cellular MTP and the ability to measure inhibitory activity. In addition, methods of identifying compounds that modulate the lipid transfer activity of MTP are provided. Kits for measuring the lipid transfer activity of MTP as well as net transfer of lipid by MTP are provided by the present invention.

Abstract: Methods of identifying compositions which inhibit lipid and lipoprotein secretion are provided using in vitro assays measuring inhibition of the binding of microsomal triglyceride transfer protein to a specific microsomal triglyceride binding site on apolipoprotein B and lipid complexes.