{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,15]],"date-time":"2026-04-15T14:28:19Z","timestamp":1776263299799,"version":"3.50.1"},"reference-count":57,"publisher":"American Society for Microbiology","issue":"11","content-domain":{"domain":["asm.org"],"crossmark-restriction":true},"short-container-title":["J. Virol."],"published-print":{"date-parts":[[1998,11,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p>Adenovirus (Ad) endocytosis via \u03b1<jats:sub>v<\/jats:sub>integrins requires activation of the lipid kinase phosphatidylinositol-3-OH kinase (PI3K). Previous studies have linked PI3K activity to both the Ras and Rho signaling cascades, each of which has the capacity to alter the host cell actin cytoskeleton. Ad interaction with cells also stimulates reorganization of cortical actin filaments and the formation of membrane ruffles (lamellipodia). We demonstrate here that members of the Rho family of small GTP binding proteins, Rac and CDC42, act downstream of PI3K to promote Ad endocytosis. Ad internalization was significantly reduced in cells treated with<jats:italic>Clostridium difficile<\/jats:italic>toxin B and in cells expressing a dominant-negative Rac or CDC42 but not a H-Ras protein. Viral endocytosis was also inhibited by cytochalasin D as well as by expression of effector domain mutants of Rac or CDC42 that impair cytoskeletal function but not JNK\/MAP kinase pathway activation. Thus, Ad endocytosis requires assembly of the actin cytoskeleton, an event initiated by activation of PI3K and, subsequently, Rac and CDC42.<\/jats:p>","DOI":"10.1128\/jvi.72.11.8806-8812.1998","type":"journal-article","created":{"date-parts":[[2019,12,31]],"date-time":"2019-12-31T18:03:30Z","timestamp":1577815410000},"page":"8806-8812","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":190,"title":["Adenovirus Endocytosis Requires Actin Cytoskeleton Reorganization Mediated by Rho Family GTPases"],"prefix":"10.1128","volume":"72","author":[{"given":"Erguang","family":"Li","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dwayne","family":"Stupack","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gary M.","family":"Bokoch","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Glen R.","family":"Nemerow","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"235","reference":[{"key":"B1_20200408120241","doi-asserted-by":"crossref","first-page":"1308","DOI":"10.1126\/science.275.5304.1308","article-title":"Formation of actin stress fibers and focal adhesions enhanced by Rho-kinase","volume":"275","author":"Amano","year":"1997","journal-title":"Science"},{"key":"B2_20200408120241","doi-asserted-by":"crossref","first-page":"27995","DOI":"10.1074\/jbc.270.47.27995","article-title":"Cdc42 and PAK-mediated signaling leads to Jun kinase and p38 mitogen-activated protein kinase activation","volume":"270","author":"Bagrodia","year":"1995","journal-title":"J. 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