PolySciTech (www.polyscitech.com) provides a wide array of PEG-PLA copolymers under the polyvivo brand name. Recently this type of copolymer has been utilized to delivery NuBCP-9 anti-cancer peptide to cancer cells triggering apoptosis. Read more: Kumar, Manoj, Dikshi Gupta, Gurpal Singh, Sapna Sharma, Madhusudan Bhatt, C. K. Prashant, A. K. Dinda, Surender Kharbanda, Donald Kufe, and Harpal Singh. "Novel polymeric nanoparticles for intracellular delivery of peptide cargos: antitumor efficacy of the Bcl-2 conversion peptide NuBCP-9." Cancer research (2014): canres-2015.