{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,8]],"date-time":"2026-07-08T15:15:41Z","timestamp":1783523741160,"version":"3.55.0"},"reference-count":67,"publisher":"Public Library of Science (PLoS)","issue":"5","license":[{"start":{"date-parts":[[2022,5,20]],"date-time":"2022-05-20T00:00:00Z","timestamp":1653004800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"HEC,Pakistan"},{"DOI":"10.13039\/501100004681","name":"Higher Education Commission, Pakistan","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004681","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:sec id=\"sec001\"><jats:title>Background &amp; aims<\/jats:title><jats:p>Major HCV infections lead to chronic hepatitis, which results in progressive liver disease including fibrosis, cirrhosis and eventually hepatocellular carcinoma (HCC). P2X4 and P2X7 are most widely distributed receptors on hepatocytes.<\/jats:p><\/jats:sec><jats:sec id=\"sec002\"><jats:title>Methods<\/jats:title><jats:p>Full length P2X4 (1.7kb) (<jats:italic>Rattus norvegicus<\/jats:italic>) was sub cloned in mammalian expression vector pcDNA3.1+. Two stable cell lines 293T\/P2X4 (experimental) and 293T\/ NV or null vector (control) were established. Both cell lines were inoculated with high viral titers human HCV sera and control human sera. Successfully infected cells harvested on day 5 and day 9 of post infection were used for further studies.<\/jats:p><\/jats:sec><jats:sec id=\"sec003\"><jats:title>Results<\/jats:title><jats:p>The results revealed a significant increase in gene expression of P2X4 on day 5 and day 9 Post -infection in cells infected with HCV sera compared with cells inoculated with control sera. Quantitative real time PCR analysis revealed that HO-1 was significantly upregulated in presence of P2X4 in HCV infected cells (P2X4\/HCV) when compared with control NV\/HCV cells. A significant decrease was observed in expression of Cu\/ZnSOD in presence of P2X4 in HCV infected cells compared to control NV\/HCV cells. However, expression of both antioxidants was observed unaltered in cells harvested on day 9 post infection. Gene expression of angiotensin II significantly increased in HCV infected cells in presence of P2X4 on day 5 and day 9 of post infection when compared with control NV\/HCV cells. A significant increase in gene expression of TNF-\u03b1 and TGF-\u03b2 was observed in HCV infected cells in presence of P2X4 on day 9 post infection in comparison with control (NV\/HCV cells). However, gene expression of adipokine leptin was not affected in both experimental (P2X4\/HCV) and control (NV\/HCV) groups on day 5 and day 9 of post infection. Extracellular matrix proteins, laminin and elastin genes expression also significantly increased in presence of P2X4 (HCV\/P2X4) on day 9 of post-infection compared to control group NV\/HCV cells.<\/jats:p><\/jats:sec><jats:sec id=\"sec004\"><jats:title>Conclusion<\/jats:title><jats:p>In conclusion, these findings constitute the evidence that P2X4 receptors in the presence of HCV play a significant role in the regulation of key antioxidant enzymes (HO-1, Cu\/ZnSOD), in the induction of proinflammatory. cytokine (TNF-\u03b1), profibrotic cytokine (TGF-\u03b2) vasoactive cytokine (angiotensin II). P2X4 also increases the expression of extracellular matrix proteins (laminin and elastin) in the presence of HCV.<\/jats:p><\/jats:sec>","DOI":"10.1371\/journal.pone.0259727","type":"journal-article","created":{"date-parts":[[2022,5,20]],"date-time":"2022-05-20T17:34:33Z","timestamp":1653068073000},"page":"e0259727","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":7,"title":["P2X4 receptors mediate induction of antioxidants, fibrogenic cytokines and ECM transcripts; in presence of replicating HCV in in vitro setting: An insight into role of P2X4 in fibrosis"],"prefix":"10.1371","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9273-6880","authenticated-orcid":true,"given":"Sobia","family":"Manzoor","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Madiha","family":"Khalid","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Muhammad","family":"Idrees","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2022,5,20]]},"reference":[{"key":"pone.0259727.ref001","doi-asserted-by":"crossref","first-page":"309","DOI":"10.1146\/annurev.med.46.1.309","article-title":"Hepatitis C: an overview.","volume":"46","author":"BN Bhandari","year":"1995","journal-title":"Annual review of medicine."},{"issue":"3","key":"pone.0259727.ref002","first-page":"133","article-title":"Molecular virology of hepatitis C virus","volume":"55","author":"N. 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