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But the specific mechanisms that connect complement activation and deposit formation in AMD patients are unknown, which limits the development of efficient therapies to reduce or stop disease progression. We have previously demonstrated that C3 blockage prevents the formation of sub-RPE deposits in a mouse model of\n                    <jats:italic>EFEMP1<\/jats:italic>\n                    -associated macular degeneration. In this study, we have used double mutant\n                    <jats:italic>Efemp1<\/jats:italic>\n                    <jats:sup>R345W\/R345W<\/jats:sup>\n                    :\n                    <jats:italic>C5<\/jats:italic>\n                    <jats:sup>-\/-<\/jats:sup>\n                    mice to investigate the role of C5 in the formation of sub-RPE deposits in vivo and in vitro. The data revealed that the genetic ablation of C5 does not eliminate the formation of sub-RPE deposits. Contrarily, the absence of C5 in RPE cultures promotes complement dysregulation that results in increased activation of C3, which likely contributes to deposit formation even in the absence of EFEMP1-R345W mutant protein. The results also suggest that genetic ablation of C5 alters the extracellular matrix turnover through an effect on matrix metalloproteinases in RPE cell cultures. These results confirm that C3 rather than C5 could be an effective therapeutic target to treat early AMD.\n                  <\/jats:p>","DOI":"10.1038\/s41598-021-89978-8","type":"journal-article","created":{"date-parts":[[2021,5,17]],"date-time":"2021-05-17T06:04:53Z","timestamp":1621231493000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Complement C5 is not critical for the formation of sub-RPE deposits in Efemp1 mutant mice"],"prefix":"10.1038","volume":"11","author":[{"given":"Donita L.","family":"Garland","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eric A.","family":"Pierce","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rosario","family":"Fernandez-Godino","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,5,17]]},"reference":[{"key":"89978_CR1","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1016\/j.ajo.2012.10.018","volume":"155","author":"JW Miller","year":"2013","unstructured":"Miller, J. 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