{"id":438200,"date":"2023-02-26T15:00:00","date_gmt":"2023-02-26T14:00:00","guid":{"rendered":"https:\/\/innovationorigins.com\/?post_type=laio&amp;p=438200"},"modified":"2023-02-26T15:00:00","modified_gmt":"2023-02-26T14:00:00","slug":"nieuwe-therapie-voor-zeldzame-leukemie","status":"publish","type":"laio","link":"https:\/\/ioplus.nl\/archive\/nl\/laio\/nieuwe-therapie-voor-zeldzame-leukemie\/","title":{"rendered":"Nieuwe therapie voor zeldzame leukemie"},"content":{"rendered":"\n<p>Onderzoekers van de Universiteit van Helsinki, het HUS Comprehensive Cancer Center en de Universiteit van Kopenhagen hebben een potenti\u00eble nieuwe gerichte therapieoptie ontwikkeld voor de behandeling van twee zeldzame subtypes (erythro\u00efd of megakaryoblastisch) van acute myelo\u00efde leukemie met behulp van BCL-XL eiwitremmers. Dit zou mogelijk de resultaten voor pati\u00ebnten kunnen verbeteren als het succes wordt aangetoond in klinische proeven, aldus de universiteit <a href=\"https:\/\/www.helsinki.fi\/en\/hilife-helsinki-institute-life-science\/news\/new-promising-targeted-drug-rare-leukemia\">in een persbericht.<\/a><\/p>\n\n\n\n<p>Leukemie is een vorm van kanker die de bloedcellen aantast. Het ontstaat wanneer het lichaam te veel onrijpe witte bloedcellen produceert, die de rode bloedcellen en bloedplaatjes verdringen die essentieel zijn voor het functioneren van het lichaam. Leukemie kan worden onderverdeeld in vier hoofdcategorie\u00ebn &#8211; acute lymfoblastische leukemie (ALL), chronische lymfoblastische leukemie (CLL), acute myelo\u00efde leukemie (AML) en chronische myelo\u00efde leukemie (CML). <\/p>\n\n\n\n<p>AML is de meest voorkomende vorm van acute leukemie bij volwassenen. Momenteel zijn er weinig behandelingsmogelijkheden voor pati\u00ebnten met erythro\u00efde of megakaryoblastische leukemie, twee zeldzame subtypes van de ziekte die moeilijk te behandelen zijn. Dit komt doordat de kwaadaardige cellen lijken op bloedstamcellen die rode bloedcellen of bloedplaatjes produceren.<\/p>\n\n\n<div class=\"vlp-link-container vlp-layout-basic wp-block-visual-link-preview-link\"><a href=\"https:\/\/ioplus.nl\/archive\/nl\/moeilijk-te-behandelen-kankersoorten-worden-behandelbaar-door-ambagon-therapeutics\/\" class=\"vlp-link\" title=\"Moeilijk te behandelen kankersoorten worden behandelbaar door Ambagon Therapeutics\"><\/a><div class=\"vlp-layout-zone-side\"><div class=\"vlp-block-2 vlp-link-image\"><\/div><\/div><div class=\"vlp-layout-zone-main\"><div class=\"vlp-block-0 vlp-link-title\">Moeilijk te behandelen kankersoorten worden behandelbaar door Ambagon Therapeutics<\/div><div class=\"vlp-block-1 vlp-link-summary\">Ziekteverwekkende eiwitten spelen een rol in het veroorzaken van diverse ziektes. Biotechbedrijf Ambagon Therapeutics, spin-off van de Technische Universiteit Eindhoven, ontwikkelt nieuwe therapie\u00ebn.<\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\">Venetoclax<\/h2>\n\n\n\n<p>Venetoclax is een nieuwe gerichte therapie voor de behandeling van acute myelo\u00efde leukemie (AML). Venetoclax werkt door kankercellen gevoelig te maken voor geprogrammeerde celdood. Uit een nieuwe studie blijkt nu echter dat venetoclax niet effectief lijkt te zijn tegen erythro\u00efde en megakaryoblastische leukemie\u00ebn. In het laboratorium onderzochten de onderzoekers een brede selectie van farmaceutische middelen die specifiek werkzaam zouden kunnen zijn tegen erythro\u00efde of megakaryoblastische leukemiecellen. <\/p>\n\n\n\n<p>Van de meer dan 500 onderzochte middelen waren met name BCL-XL eiwitremmers effectief in het doden van kankercellen ge\u00efsoleerd uit deze typen leukemie. BCL-XL-eiwitten hebben een soortgelijke functie als BCL-2, het doelwit van venetoclax. Momenteel worden BCL-XL-remmers niet gebruikt om pati\u00ebnten te behandelen, maar hun werkzaamheid en veiligheid worden momenteel onderzocht in klinische proeven. <\/p>\n\n\n\n<p>&#8220;De introductie van venetoclax heeft de prognose van AML-pati\u00ebnten aanzienlijk verbeterd. Ons onderzoek geeft echter aan dat venetoclax waarschijnlijk niet optimaal werkt tegen de subtypes van AML waarop wij ons richten&#8221;, aldus arts-onderzoeker Olli Dufva.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Verbeteren<\/h2>\n\n\n\n<p>De laboratoriumresultaten leveren het bewijs dat pati\u00ebnten met erythro\u00efde of megakaryoblastische acute leukemie een veelbelovende groep vormen voor onderzoek naar de werkzaamheid van BCL-XL-remmers bij klinisch gebruik,&#8221; zei postdoctoraal onderzoeker Heikki Kuusanm\u00e4ki. &#8220;Deze bevinding kan in de toekomst de prognose van deze zeer zeldzame en moeilijk te behandelen leukemie\u00ebn verbeteren,&#8221; zei professor Translationele Hematologie Satu Mustjoki van de Universiteit van Helsinki en het HUS Comprehensive Cancer Center.<\/p>\n\n\n\n<p><a href=\"data:text\/html;charset=utf-8,%3Ch1%3ENew%20Targeted%20Therapy%20for%20Rare%20Leukemias%3C%2Fh1%3E%0A%20%20%3CP%3EResearchers%20from%20the%20University%20of%20Helsinki%2C%20HUS%20Comprehensive%20Cancer%20Center%20and%20the%20University%20of%20Copenhagen%20have%20identified%20a%20potential%20new%20targeted%20therapy%20option%20for%20treating%20two%20rare%20subtypes%20(erythroid%20or%20megakaryoblastic)of%20acute%20myeloid%20leukemia%20using%20BCL-XL%20protein%20inhibitors.%20This%20could%20potentially%20improve%20patient%20outcomes%20if%20proven%20successful%20in%20clinical%20trials.%3C%2FP%3E%0A%20%20%3CP%3E%20%20%20%20%3Cp%3ELeukemia%20is%20a%20type%20of%20cancer%20that%20affects%20the%20blood%20cells.%20It%20occurs%20when%20the%20body%20produces%20too%20many%20immature%20white%20blood%20cells%2C%20which%20crowd%20out%20the%20red%20blood%20cells%20and%20platelets%20that%20are%20essential%20for%20the%20body%20to%20function.%20Leukemia%20can%20be%20divided%20into%20four%20main%20categories%20%E2%80%93%20acute%20lymphoblastic%20leukemia%20(ALL)%2C%20chronic%20lymphoblastic%20leukemia%20(CLL)%2C%20acute%20myeloid%20leukemia%20(AML)%20and%20chronic%20myeloid%20leukemia%20(CML).%20AML%20is%20the%20most%20common%20type%20of%20acute%20leukemia%20in%20adults.%3C%2Fp%3E%0A%20%20%20%20%0A%20%20%20%20%3Cp%3ECurrently%2C%20few%20treatment%20options%20are%20available%20to%20patients%20with%20erythroid%20or%20megakaryoblastic%20leukemias%2C%20two%20rare%20subtypes%20of%20the%20disease%20that%20are%20difficult%20to%20treat.%20This%20is%20due%20to%20the%20malignant%20cells%20resembling%20blood%20stem%20cells%20that%20produce%20red%20blood%20cells%20or%20platelets.%3C%2Fp%3E%0A%20%20%20%20%0A%20%20%20%20%3Ch2%3EVenetoclax%3C%2Fh2%3E%0A%20%20%20%20%3Cp%3EVenetoclax%20is%20a%20new%20targeted%20therapy%20option%20for%20the%20treatment%20of%20acute%20myeloid%20leukemia%20(AML).%20Venetoclax%20works%20by%20sensitising%20cancer%20cells%20to%20programmed%20cell%20death.%20However%2C%20a%20new%20study%20now%20shows%20that%20venetoclax%20does%20not%20appear%20to%20be%20effective%20against%20erythroid%20and%20megakaryoblastic%20leukemias.%3C%2Fp%3E%0A%20%20%20%20%0A%20%20%20%20%3Ch2%3EScreening%20for%20New%20Treatment%20Options%3C%2Fh2%3E%0A%20%20%20%20%3Cp%3EIn%20the%20laboratory%2C%20the%20researchers%20screened%20a%20wide%20selection%20of%20pharmaceutical%20agents%20that%20could%20be%20effective%20specifically%20against%20erythroid%20or%20megakaryoblastic%20leukemia%20cells.%20Among%20the%20more%20than%20500%20agents%20analysed%2C%20BCL-XL%20protein%20inhibitors%20in%20particular%20were%20effective%20in%20killing%20cancer%20cells%20isolated%20from%20these%20types%20of%20leukemia.%3C%2Fp%3E%0A%20%20%20%20%0A%20%20%20%20%3Cp%3EBCL-XL%20proteins%20have%20a%20similar%20function%20as%20BCL-2%2C%20which%20is%20the%20target%20of%20venetoclax.%20At%20the%20moment%2C%20BCL-XL%20inhibitors%20are%20not%20used%20to%20treat%20patients%2C%20but%20their%20efficacy%20and%20safety%20are%20currently%20being%20investigated%20in%20clinical%20trials.%3C%2Fp%3E%0A%20%20%20%20%0A%20%20%20%20%3Cp%3E%22The%20introduction%20of%20venetoclax%20has%20significantly%20improved%20the%20prognosis%20of%20AML%20patients.%20However%2C%20our%20research%20indicates%20that%20venetoclax%20is%20unlikely%20to%20function%20optimally%20against%20the%20subtypes%20of%20AML%20in%20our%20focus%2C%22%20said%20physician-scientist%20Olli%20Dufva.%3C%2Fp%3E%0A%20%20%20%20%0A%20%20%20%20%3Ch2%3EPotential%20Benefits%3C%2Fh2%3E%0A%20%20%20%20%3Cp%3EThe%20laboratory%20findings%20provide%20evidence%20that%20patients%20with%20erythroid%20or%20megakaryoblastic%20acute%20leukemia%20would%20be%20a%20promising%20group%20for%20investigating%20the%20efficacy%20of%20BCL-XL%20inhibitors%20in%20clinical%20use%2C%22%20said%20postdoctoral%20researcher%20Heikki%20Kuusanm%C3%A4ki.%3C%2Fp%3E%0A%20%20%20%20%0A%20%20%20%20%3Cp%3E%22This%20finding%20may%20in%20the%20future%20improve%20the%20prognosis%20of%20these%20very%20rare%20and%20difficult-to-treat%20leukemias%2C%22%20said%20Professor%20of%20Translational%20Haematology%20Satu%20Mustjoki%20from%20the%20University%20of%20Helsinki%20and%20HUS%20Comprehensive%20Cancer%20Center.%3C%2Fp%3E%0A%20%20%20%20%0A%20%20%20%20%3Ch2%3EResearch%20Funding%3C%2Fh2%3E%0A%20%20%20%20%3Cp%3EThe%20study%20was%20funded%20by%20the%20Academy%20of%20Finland%2C%20Cancer%20Foundation%20Finland%2C%20the%20Finnish%20Cancer%20Institute%2C%20Sigrid%20Jus%C3%A9lius%20Foundation%20and%20the%20Finnish%20Medical%20Foundation.%20The%20study%20was%20carried%20out%20under%20the%20iCAN%20Digital%20Precision%20Cancer%20Medicine%20Flagship%20funded%20by%20the%20Academy%20of%20Finland.%3C%2Fp%3E%0A%20%20%20%20%0A%20%20%20%20%3Cp%3EBCL-XL%20inhibitors%20have%20shown%20promise%20as%20a%20potential%20treatment%20for%20erythroid%20and%20megakaryoblastic%20leukemias%2C%20two%20rare%20subtypes%20of%20acute%20myeloid%20leukemia.%20The%20research%20conducted%20by%20University%20of%20Helsinki%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