{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T09:23:12Z","timestamp":1762161792757,"version":"build-2065373602"},"reference-count":48,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2023,7,24]],"date-time":"2023-07-24T00:00:00Z","timestamp":1690156800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (FCT)","doi-asserted-by":"publisher","award":["PTDC\/SAU-INF\/28182\/2017","EXPL\/SAU-INF\/0742\/2021","UIDB\/04138\/2020","2021.07978.BD","UIDB\/04279\/2020","CEECINST\/00070\/2021"],"award-info":[{"award-number":["PTDC\/SAU-INF\/28182\/2017","EXPL\/SAU-INF\/0742\/2021","UIDB\/04138\/2020","2021.07978.BD","UIDB\/04279\/2020","CEECINST\/00070\/2021"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Center for Interdisciplinary Research in Health","award":["PTDC\/SAU-INF\/28182\/2017","EXPL\/SAU-INF\/0742\/2021","UIDB\/04138\/2020","2021.07978.BD","UIDB\/04279\/2020","CEECINST\/00070\/2021"],"award-info":[{"award-number":["PTDC\/SAU-INF\/28182\/2017","EXPL\/SAU-INF\/0742\/2021","UIDB\/04138\/2020","2021.07978.BD","UIDB\/04279\/2020","CEECINST\/00070\/2021"]}]},{"name":"Universidade Cat\u00f3lica Portuguesa","award":["PTDC\/SAU-INF\/28182\/2017","EXPL\/SAU-INF\/0742\/2021","UIDB\/04138\/2020","2021.07978.BD","UIDB\/04279\/2020","CEECINST\/00070\/2021"],"award-info":[{"award-number":["PTDC\/SAU-INF\/28182\/2017","EXPL\/SAU-INF\/0742\/2021","UIDB\/04138\/2020","2021.07978.BD","UIDB\/04279\/2020","CEECINST\/00070\/2021"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Microorganisms"],"abstract":"<jats:p>Tuberculosis (TB) treatment relies primarily on 70-year-old drugs, and prophylaxis suffers from the lack of an effective vaccine. Among the 10 million people exhibiting disease symptoms yearly, 450,000 have multidrug or extensively drug-resistant (MDR or XDR) TB. A greater understanding of host and pathogen interactions will lead to new therapeutic interventions for TB eradication. One of the strategies will be to target the host for better immune bactericidal responses against the TB causative agent Mycobacterium tuberculosis (Mtb). Cathepsins are promising targets due to their manipulation of Mtb with consequences such as decreased proteolytic activity and improved pathogen survival in macrophages. We recently demonstrated that we could overcome this enzymatic blockade by manipulating protease inhibitors such as cystatins. Here, we investigate the role of cystatin F, an inhibitor that we showed previously to be strongly upregulated during Mtb infection. Our results indicate that the silencing of cystatin F using siRNA increase the proteolytic activity of cathepsins S, L, and B, significantly impacting pathogen intracellular killing in macrophages. Taken together, these indicate the targeting of cystatin F as a potential adjuvant therapy for TB, including MDR and XDR-TB.<\/jats:p>","DOI":"10.3390\/microorganisms11071861","type":"journal-article","created":{"date-parts":[[2023,7,24]],"date-time":"2023-07-24T01:08:11Z","timestamp":1690160891000},"page":"1861","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Modulation of Cystatin F in Human Macrophages Impacts Cathepsin-Driven Killing of Multidrug-Resistant Mycobacterium tuberculosis"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3997-9618","authenticated-orcid":false,"given":"Manoj","family":"Mandal","sequence":"first","affiliation":[{"name":"Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9602-1516","authenticated-orcid":false,"given":"David","family":"Pires","sequence":"additional","affiliation":[{"name":"Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal"},{"name":"Center for Interdisciplinary Research in Health, Cat\u00f3lica Medical School, Universidade Cat\u00f3lica Portuguesa, Estrada Oct\u00e1vio Pato, 2635-631 Rio de Mouro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3794-457X","authenticated-orcid":false,"given":"Maria Jo\u00e3o","family":"Catal\u00e3o","sequence":"additional","affiliation":[{"name":"Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal"}]},{"given":"Jos\u00e9 Miguel","family":"Azevedo-Pereira","sequence":"additional","affiliation":[{"name":"Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5934-0198","authenticated-orcid":false,"given":"Elsa","family":"Anes","sequence":"additional","affiliation":[{"name":"Host-Pathogen Interactions Unit, Research Institute for Medicines, iMed-ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,7,24]]},"reference":[{"key":"ref_1","unstructured":"World Health Organization (2022). 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