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Stromal cells engineered to express T cell factors induce robust CLL cell proliferation in vitro and in PDX co-transplantations allowing the identification of RAF inhibitors as anti-proliferative drugs

E. Hoferkova, V. Seda, S. Kadakova, J. Verner, T. Loja, K. Matulova, H. Skuhrova Francova, E. Ondrouskova, D. Filip, N. Blavet, M. Boudny, G. Mladonicka Pavlasova, J. Vecera, L. Ondrisova, P. Pavelkova, K. Hlavac, L. Kostalova, A. Michaelou, S....

. 2024 ; 38 (8) : 1699-1711. [pub] 20240614

Jazyk angličtina Země Anglie, Velká Británie

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc24019530

Grantová podpora
NU23-08-00448 Ministerstvo Zdravotnictví Ceské Republiky (Ministry of Health of the Czech Republic)

E-zdroje Online Plný text

NLK ProQuest Central od 2000-01-01 do Před 1 rokem
Open Access Digital Library od 1997-01-01
Nursing & Allied Health Database (ProQuest) od 2000-01-01 do Před 1 rokem
Health & Medicine (ProQuest) od 2000-01-01 do Před 1 rokem
Public Health Database (ProQuest) od 2000-01-01 do Před 1 rokem

Odkazy

PubMed 38877102
DOI 10.1038/s41375-024-02284-w
Knihovny.cz E-zdroje

Several in vitro models have been developed to mimic chronic lymphocytic leukemia (CLL) proliferation in immune niches; however, they typically do not induce robust proliferation. We prepared a novel model based on mimicking T-cell signals in vitro and in patient-derived xenografts (PDXs). Six supportive cell lines were prepared by engineering HS5 stromal cells with stable expression of human CD40L, IL4, IL21, and their combinations. Co-culture with HS5 expressing CD40L and IL4 in combination led to mild CLL cell proliferation (median 7% at day 7), while the HS5 expressing CD40L, IL4, and IL21 led to unprecedented proliferation rate (median 44%). The co-cultures mimicked the gene expression fingerprint of lymph node CLL cells (MYC, NFκB, and E2F signatures) and revealed novel vulnerabilities in CLL-T-cell-induced proliferation. Drug testing in co-cultures revealed for the first time that pan-RAF inhibitors fully block CLL proliferation. The co-culture model can be downscaled to five microliter volume for large drug screening purposes or upscaled to CLL PDXs by HS5-CD40L-IL4 ± IL21 co-transplantation. Co-transplanting NSG mice with purified CLL cells and HS5-CD40L-IL4 or HS5-CD40L-IL4-IL21 cells on collagen-based scaffold led to 47% or 82% engraftment efficacy, respectively, with ~20% of PDXs being clonally related to CLL, potentially overcoming the need to co-transplant autologous T-cells in PDXs.

Citace poskytuje Crossref.org

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