| Autor: |
Esther Osher, Yossi Anis, Ruth Singer-Shapiro, Nataly Urshanski, Tamar Unger, Shira Albeck, Oren Bogin, Gary Weisinger, Fortune Kohen, Avi Valevski, Aviva Fattal-Valevski, Liora Sagi, Michal Weitman, Yulia Shenberger, Nadav Sagiv, Ruth Navon, Meir Wilchek, Naftali Stern |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Molecular Therapy: Methods & Clinical Development, Vol 32, Iss 3, Pp 101300- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2329-0501 |
| DOI: |
10.1016/j.omtm.2024.101300 |
| Popis: |
Tay-Sachs (TS) disease is a neurodegenerative disease resulting from mutations in the gene encoding the α-subunit (HEXA) of lysosomal β-hexosaminidase A (HexA). We report that (1) recombinant HEXA alone increased HexA activity and decreased GM2 content in human TS glial cells and peripheral mononuclear blood cells; 2) a recombinant chimeric protein composed of HEXA linked to two blood-brain barrier (BBB) entry elements, a transferrin receptor binding sequence and granulocyte-colony stimulating factor, associates with HEXB in vitro; reaches human cultured TS cells lysosomes and mouse brain cells, especially neurons, in vivo; lowers GM2 in cultured human TS cells; lowers whole brain GM2 concentration by approximately 40% within 6 weeks, when injected intravenously (IV) to adult TS-mutant mice mimicking the slow course of late-onset TS; and increases forelimbs grip strength. Hence, a chimeric protein equipped with dual BBB entry elements can transport a large protein such as HEXA to the brain, decrease the accumulation of GM2, and improve muscle strength, thereby providing potential treatment for late-onset TS. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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