Shantou University 1 article published in JoVE Developmental Biology Preparation of Plasma Membrane Vesicles from Bone Marrow Mesenchymal Stem Cells for Potential Cytoplasm Replacement Therapy Li-qun Xu1, Mei-jia Lin1, Yun-pan Li1, Shuang Li1, Shao-jun Chen1, Chi-ju Wei1 1Multidisciplinary Research Center, Shantou University Age-related diseases are associated with multiple defects in components of the cytoplasm. Here, we present a protocol to prepare plasma membrane vesicles from bone marrow mesenchymal stem cells. This technique could potentially be used as a means of cytoplasm replacement therapy to ameliorate or even reverse age-associated phenotypes.