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Thumrongsiri, Nutthanit; Dana, Paweena; Bawab, Rand; Tanyapanyachon, Prattana; Treetidnipa, Chaichana; Saengkrit, Nattika; Sathornsumetee, Sith
Biomedicine & pharmacotherapy, June 2022, 2022-Jun, 2022-06-00, 20220601, 2022-06-01, Volume: 150Journal Article
Primary central nervous system lymphoma (PCNSL) is a form of extranodal non-Hodgkin’s B-cell lymphoma limited to the CNS. The treatment of PCNSL is ineffective partly due to the blood-brain barrier (BBB) restriction of delivery of many drugs including anti-CD20 (Rituximab; RTX) which is a standard treatment for systemic B-cell lymphomas. In this study, liposome with tween-80 surface modification was fabricated and conjugated with RTX for enhancing BBB penetration to target lymphoma cells in the CNS. Physicochemical characterizations of Lip/RTX were performed and spherical shape liposomes with narrow size distribution were demonstrated by TEM. An average diameter of Lip/RTX was 168.57 ± 1.57 nm with the percentage of RTX conjugation at 90.94. Cell internalization monitored by flow cytometry confirmed that conjugation of RTX promoted liposome entry into Raji cells expressing CD20. Antitumor activity of Lip/RTX was comparable to free RTX indicating that RTX moieties on liposome remained their therapeutic function. In addition, Lip/RTX inhibited tumor aggressiveness by limiting cell migration and invasion. Systemic administration of Lip/RTX significantly prolonged survival of mice harboring intracranial lymphoma xenografts. Taken together, Lip/RTX presents a new potential treatment for patients with PCNSL. Display omitted •Liposomal rituximab (Lip/RTX) was fabricated for precision treatment of primary CNS lymphoma.•Conjugation of RTX promoted liposome cell entry in Raji cells expressing CD20.•Lip/RTX retained therapeutic activity when compared with free RTX.•Lip/RTX inhibited tumor cell invasion via suppressing MMP-9 activity.•Lip/RTX significantly prolonged survival of mice bearing human PCNSL xenografts
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