{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T16:58:38Z","timestamp":1792083518341,"version":"4.4.0"},"reference-count":34,"publisher":"Oxford University Press (OUP)","issue":"5","license":[{"start":{"date-parts":[[2010,5,1]],"date-time":"2010-05-01T00:00:00Z","timestamp":1272672000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2010,5,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Hexavalent chromium (Cr(VI)) compounds are known human carcinogens associated with the incidence of lung cancer. Although a direct correlation between Cr(VI) exposure and lung cancer has been established, several studies aimed at generating animal models for Cr(VI) have yielded inconsistent data that do not affirmatively support findings from epidemiologic studies. Because the lack of a good animal model has hindered the identification of molecular mechanisms involved in Cr(VI) exposure, we developed an in vitro model that facilitates mechanistic studies of Cr(VI)-induced carcinogenesis. We report here that long-term exposure to Cr(VI) leads to the malignant transformation of nontumorigenic human lung epithelial cells. Cr(VI)-transformed cells exhibited loss of contact inhibition, colony formation, and increased rates of cell invasion, migration, and proliferation, as compared with passage-matched control cells. Cr(VI)-transformed cells evaded apoptosis by a mechanism involving S-nitrosylation and stabilization of Bcl-2 protein in a nitric oxide\u2013dependent manner. This study establishes an important in vitro model that facilitates mechanistic studies of Cr(VI)-induced carcinogenesis, and elucidates a novel mechanism that causes apoptosis-resistant malignant transformation of nontumorigenic lung cells in response to a human carcinogen.<\/jats:p>","DOI":"10.1165\/rcmb.2009-0094oc","type":"journal-article","created":{"date-parts":[[2009,6,25]],"date-time":"2009-06-25T22:05:21Z","timestamp":1245967521000},"page":"578-585","source":"Crossref","is-referenced-by-count":31,"title":["Nitric Oxide\u2013Mediated Bcl-2 Stabilization Potentiates Malignant Transformation of Human Lung Epithelial Cells"],"prefix":"10.1093","volume":"42","author":[{"given":"Neelam","family":"Azad","sequence":"first","affiliation":[{"name":"Department of Pharmaceutical Sciences, Hampton University, Hampton, Virginia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anand Krishnan V.","family":"Iyer","sequence":"additional","affiliation":[{"name":"Department of Pharmaceutical Sciences, Hampton University, Hampton, Virginia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liying","family":"Wang","sequence":"additional","affiliation":[{"name":"Pathology and Physiology Research Branch, National Institute for Occupational Safety and Health, Morgantown, West Virginia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yongju","family":"Lu","sequence":"additional","affiliation":[{"name":"Department of Pharmaceutical and Pharmacological Sciences, West Virginia University, Morgantown, West Virginia; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Djordje","family":"Medan","sequence":"additional","affiliation":[{"name":"Department of Pharmaceutical and Pharmacological Sciences, West Virginia University, Morgantown, West Virginia; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vincent","family":"Castranova","sequence":"additional","affiliation":[{"name":"Pathology and Physiology 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