{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T21:12:48Z","timestamp":1791925968489,"version":"4.3.4"},"reference-count":83,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,2,9]],"date-time":"2026-02-09T00:00:00Z","timestamp":1770595200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004281","name":"Narodowe Centrum Nauki","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004281","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["frontierspartnerships.org"],"crossmark-restriction":true},"short-container-title":["Acta Biochim. Pol."],"abstract":"<jats:p>\n                    Adeno-associated virus (AAV) vectors have become a cornerstone of\n                    <jats:italic>in vivo<\/jats:italic>\n                    gene delivery. However, although the endothelium is the first cellular interface encountered after systemic delivery, native AAV serotypes exhibit poor endothelial transduction, favoring hepatocytes, muscle cells and, neurons instead. This limitation represents a major barrier to gene therapies targeting cardiovascular, neurovascular, and inflammatory diseases. This review summarizes recent advances in redirecting AAV tropism toward endothelial cells (ECs) through genetic capsid engineering, peptide display, and non-genetic surface modification. We highlight the previously underrecognized endothelial tropism of the AAV4 serotype, attributed to its unique recognition of O-linked sialic acids. We also describe multiple approaches to capsid retargeting, including the incorporation of EC-binding peptides that enable cell entry into specific vascular beds, as well as genetic engineering strategies that reduce heparan sulfate proteoglycan (HSPG) binding and hepatocyte transduction while enhancing intracellular trafficking in ECs. In addition, we discuss polymer-coating approaches that allow receptor-specific targeting of ECs with reduced recognition by immune cells. Together, these strategies represent promising avenues for enhancing vascular tropism and transduction efficiency of modified AAVs, moving the field closer to precise vascular gene therapies.\n                  <\/jats:p>","DOI":"10.3389\/abp.2026.15740","type":"journal-article","created":{"date-parts":[[2026,2,9]],"date-time":"2026-02-09T10:11:09Z","timestamp":1770631869000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":4,"title":["Advances in endothelial cell targeting by AAV vectors"],"prefix":"10.3389","volume":"73","author":[{"given":"Milena","family":"Cichon","sequence":"first","affiliation":[{"name":"Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University","place":["Krak\u00f3w, Poland"]},{"name":"Doctoral School of Exact and Natural Sciences, Jagiellonian University","place":["Krak\u00f3w, Poland"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alicja","family":"Jozkowicz","sequence":"additional","affiliation":[{"name":"Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University","place":["Krak\u00f3w, Poland"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Grochot-Przeczek","sequence":"additional","affiliation":[{"name":"Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University","place":["Krak\u00f3w, Poland"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,2,9]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"247","DOI":"10.1186\/1556-276X-9-247","article-title":"Dendrimers: synthesis, applications, and properties","volume":"9","author":"Abbasi","year":"2014","journal-title":"Nanoscale Res. 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