{"id":1040,"date":"2026-04-11T21:48:47","date_gmt":"2026-04-11T21:48:47","guid":{"rendered":"http:\/\/sips-es.org\/?p=1040"},"modified":"2026-04-11T21:48:47","modified_gmt":"2026-04-11T21:48:47","slug":"of-50hislaczcolonies-isolated-5-gave-a-strong-interaction-and-after-dna-sequence-analysis-and-data-bank-searches-revealed-that-they-encode-the-entire-molecule-of-3-subunit-of-proteasome","status":"publish","type":"post","link":"https:\/\/sips-es.org\/?p=1040","title":{"rendered":"\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of 3 subunit of proteasome (Fig"},"content":{"rendered":"<p>\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of 3 subunit of proteasome (Fig. cotransfection of HeLa cells with pCMV-PAI-1 and pd2EGFP-N1 and prevented degradation of p53 as well as IB, as evidenced both by confocal microscopy and Western immunoblotting. Keywords:Apoptosis, Plasminogen Inhibitor, Proteasome, Protein Stability, Protein-Protein Interactions, Ubiquitylation == Introduction == Plasminogen activator inhibitor type 1 (PAI-1)2plays a regulatory role in fibrinolysis and many other biological processes involving tissue remodeling, cell proliferation, migration, and apoptosis (15). Its synthesis and activity are tightly regulated, and normally PAI-1 is present as a trace protein in plasma. However, under pathological conditions such as cancer, atherosclerosis, diabetes, and severe obesity, PAI-1 levels are dramatically increased both inside of cells and in the extracellular matrix or in blood plasma (6). Interestingly, a number of observations show that either an exogenous source of PAI-1 or cancer cells overexpressing PAI-1 is effectively able to induce apoptosis and control growth of tumor vasculature. Furthermore, the aggressiveness of tumor growth and metastasis can be diminished after transfection with PAI-1 of tumor cell lines such as HT-1080 fibrosarcoma cells (7), murine melanoma (8), PC-3 prostate cancer cell lines (9), or malignant keratinocytes (10). Proapoptotic activity of Benzoylhypaconitine PAI-1 was also evidenced using endothelial cells isolated from the aortas of PAI-1\/mice. Such cells showed decreased spontaneous apoptosis relative to WT cells, but they recovered the proliferative phenotype associated with hyperactivation of Akt after treatment with recombinant PAI-1 (3,11). Inhibition of apoptosis by PAI-1 appears to be independent of the PAI-1\/uPA complex, signaling through uPAR or binding to vitronectin, but has been directly linked with the inhibitory effect of PAI-1 on the activity of caspase-3 but not caspase-8 (12,13). On the other hand, PAI-1 deficiency has been associated with activated caspase-3 in atherosclerotic plaques from apoE\/mice (13). Indeed, PAI-1 forms a high affinity complex with caspase-3, thereby directly inhibiting caspase-3 activity. However, PAI-1 has pleiotropic effects, and the exact mechanism underlying PAI-1 apoptosis regulating function is still not known. This study was designed to search for novel intracellular proteins that interact with PAI-1 in endothelial cells and for Benzoylhypaconitine alternative mechanisms by which PAI-1 may modulate cellular proliferation or apoptosis. We provide evidence that PAI-1, when up-regulated in cells, interacts with proteasome 3 subunit and modulates its proteolytic activity, thus promoting apoptosis. == EXPERIMENTAL PROCEDURES == <a href=\"https:\/\/www.adooq.com\/benzoylhypaconitine.html\">Benzoylhypaconitine<\/a> == == == == == Materials == Wizard Miniprep for plasmid DNA isolation and restriction enzymes was purchased from Promega Corp. (Madison, WI). Rabbit polyclonal antibodies to 20 S proteasome 3 (H-125), mouse monoclonal antibody to <a href=\"http:\/\/en.wikipedia.org\/wiki\/Paris_Commune\">Rabbit polyclonal to ZNF418<\/a> 20 S proteasome 3 (MCP257), rabbit polyclonal antibody Benzoylhypaconitine to 1 1 (FL-241), mouse monoclonal antibody to Benzoylhypaconitine PAI-1 (C-9), rabbit anti-IB antibodies (C-21), mouse monoclonal antibody to green fluorescent protein (GFP; B-2), and HRP-conjugated goat anti-rabbit and goat anti-mouse IgG were from Santa Cruz Biotechnology (Santa Cruz, CA). 20 S proteasome was from Enzo Life Sciences (Plymouth Meeting, PA). Constitutively active PAI-1 mutant was from American Dignostica (Stamford, CT). Rabbit polyclonal antibodies to PAI-1 (for ELISA) and rabbit anti-26 S proteasome S4 subunit were from Calbiochem\/Merck, rabbit anti- actin polyclonal antibodies were from Abcam (Cambridge, UK), AlexaFluor 568-conjugated donkey anti-rabbit antibodies were from Molecular Probes\/Invitrogen, and FITC-conjugated goat anti-mouse antibodies were from Chemicon\/Millipore (Billerica, MA). Protein A\/G was from Pierce\/Thermo Scientific (Rockford, IL), Mowiol was from Calbiochem\/Merck. High binding 96-well microtiter plates were.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-1040","post","type-post","status-publish","format-standard","hentry","category-mboat"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of 3 subunit of proteasome (Fig - Expression of TNF inhibitor in Senescence and Aging<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sips-es.org\/?p=1040\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of 3 subunit of proteasome (Fig - Expression of TNF inhibitor in Senescence and Aging\" \/>\n<meta property=\"og:description\" content=\"\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sips-es.org\/?p=1040\" \/>\n<meta property=\"og:site_name\" content=\"Expression of TNF inhibitor in Senescence and Aging\" \/>\n<meta property=\"article:published_time\" content=\"2026-04-11T21:48:47+00:00\" \/>\n<meta name=\"author\" content=\"webmaster\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"webmaster\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/sips-es.org\\\/?p=1040#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/sips-es.org\\\/?p=1040\"},\"author\":{\"name\":\"webmaster\",\"@id\":\"https:\\\/\\\/sips-es.org\\\/#\\\/schema\\\/person\\\/ba9c02660de1ee9c6abe6b592a373d09\"},\"headline\":\"\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of 3 subunit of proteasome (Fig\",\"datePublished\":\"2026-04-11T21:48:47+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/sips-es.org\\\/?p=1040\"},\"wordCount\":590,\"articleSection\":[\"MBOAT\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/sips-es.org\\\/?p=1040\",\"url\":\"https:\\\/\\\/sips-es.org\\\/?p=1040\",\"name\":\"\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of 3 subunit of proteasome (Fig - Expression of TNF inhibitor in Senescence and Aging\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/sips-es.org\\\/#website\"},\"datePublished\":\"2026-04-11T21:48:47+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/sips-es.org\\\/#\\\/schema\\\/person\\\/ba9c02660de1ee9c6abe6b592a373d09\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/sips-es.org\\\/?p=1040#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/sips-es.org\\\/?p=1040\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/sips-es.org\\\/?p=1040#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/sips-es.org\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of 3 subunit of proteasome (Fig\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/sips-es.org\\\/#website\",\"url\":\"https:\\\/\\\/sips-es.org\\\/\",\"name\":\"Expression of TNF inhibitor in Senescence and Aging\",\"description\":\"Just another WordPress site\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/sips-es.org\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/sips-es.org\\\/#\\\/schema\\\/person\\\/ba9c02660de1ee9c6abe6b592a373d09\",\"name\":\"webmaster\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/b43a6959056f061bfce2b9742be3cc647b70a6a44c84e7d0bcc557ddb9e81d78?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/b43a6959056f061bfce2b9742be3cc647b70a6a44c84e7d0bcc557ddb9e81d78?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/b43a6959056f061bfce2b9742be3cc647b70a6a44c84e7d0bcc557ddb9e81d78?s=96&d=mm&r=g\",\"caption\":\"webmaster\"},\"sameAs\":[\"http:\\\/\\\/sips-es.org\"],\"url\":\"https:\\\/\\\/sips-es.org\\\/?author=1\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of 3 subunit of proteasome (Fig - Expression of TNF inhibitor in Senescence and Aging","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/sips-es.org\/?p=1040","og_locale":"en_US","og_type":"article","og_title":"\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of 3 subunit of proteasome (Fig - Expression of TNF inhibitor in Senescence and Aging","og_description":"\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of&hellip;","og_url":"https:\/\/sips-es.org\/?p=1040","og_site_name":"Expression of TNF inhibitor in Senescence and Aging","article_published_time":"2026-04-11T21:48:47+00:00","author":"webmaster","twitter_card":"summary_large_image","twitter_misc":{"Written by":"webmaster","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/sips-es.org\/?p=1040#article","isPartOf":{"@id":"https:\/\/sips-es.org\/?p=1040"},"author":{"name":"webmaster","@id":"https:\/\/sips-es.org\/#\/schema\/person\/ba9c02660de1ee9c6abe6b592a373d09"},"headline":"\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of 3 subunit of proteasome (Fig","datePublished":"2026-04-11T21:48:47+00:00","mainEntityOfPage":{"@id":"https:\/\/sips-es.org\/?p=1040"},"wordCount":590,"articleSection":["MBOAT"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/sips-es.org\/?p=1040","url":"https:\/\/sips-es.org\/?p=1040","name":"\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of 3 subunit of proteasome (Fig - Expression of TNF inhibitor in Senescence and Aging","isPartOf":{"@id":"https:\/\/sips-es.org\/#website"},"datePublished":"2026-04-11T21:48:47+00:00","author":{"@id":"https:\/\/sips-es.org\/#\/schema\/person\/ba9c02660de1ee9c6abe6b592a373d09"},"breadcrumb":{"@id":"https:\/\/sips-es.org\/?p=1040#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/sips-es.org\/?p=1040"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/sips-es.org\/?p=1040#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/sips-es.org\/"},{"@type":"ListItem","position":2,"name":"\ufeffOf 50His+LacZ+colonies isolated, 5 gave a strong interaction and, after DNA sequence analysis and data bank searches, revealed that they encode the entire molecule of 3 subunit of proteasome (Fig"}]},{"@type":"WebSite","@id":"https:\/\/sips-es.org\/#website","url":"https:\/\/sips-es.org\/","name":"Expression of TNF inhibitor in Senescence and Aging","description":"Just another WordPress site","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/sips-es.org\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/sips-es.org\/#\/schema\/person\/ba9c02660de1ee9c6abe6b592a373d09","name":"webmaster","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/b43a6959056f061bfce2b9742be3cc647b70a6a44c84e7d0bcc557ddb9e81d78?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/b43a6959056f061bfce2b9742be3cc647b70a6a44c84e7d0bcc557ddb9e81d78?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/b43a6959056f061bfce2b9742be3cc647b70a6a44c84e7d0bcc557ddb9e81d78?s=96&d=mm&r=g","caption":"webmaster"},"sameAs":["http:\/\/sips-es.org"],"url":"https:\/\/sips-es.org\/?author=1"}]}},"_links":{"self":[{"href":"https:\/\/sips-es.org\/index.php?rest_route=\/wp\/v2\/posts\/1040","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sips-es.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sips-es.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sips-es.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sips-es.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1040"}],"version-history":[{"count":1,"href":"https:\/\/sips-es.org\/index.php?rest_route=\/wp\/v2\/posts\/1040\/revisions"}],"predecessor-version":[{"id":1041,"href":"https:\/\/sips-es.org\/index.php?rest_route=\/wp\/v2\/posts\/1040\/revisions\/1041"}],"wp:attachment":[{"href":"https:\/\/sips-es.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1040"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sips-es.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1040"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sips-es.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1040"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}