J 2020

Organoids as a personalized medicine tool for ultra-rare mutations in cystic fibrosis: The case of S955P and 1717-2A > G

SILVA, I. A.L ., Tereza DOUSOVA, S. RAMALHO, R. CENTEIO, L. A. CLARKE et. al.

Basic information

Original name

Organoids as a personalized medicine tool for ultra-rare mutations in cystic fibrosis: The case of S955P and 1717-2A > G

Authors

SILVA, I. A.L . (620 Portugal), Tereza DOUSOVA (203 Czech Republic), S. RAMALHO (620 Portugal), R. CENTEIO (620 Portugal), L. A. CLARKE (620 Portugal), V. RAILEAN (620 Portugal), H. M. BOTELHO (620 Portugal), Andrea HOLUBOVA (203 Czech Republic), Iveta VALÁŠKOVÁ (203 Czech Republic, belonging to the institution), J. T. YEH (840 United States of America), T. C. HWANG (840 United States of America), C. M. FARINHA (620 Portugal), K. KUNZELMANN (276 Germany) and M. D. AMARAL (620 Portugal, guarantor)

Edition

Biochimica et Biophysica Acta - Molecular Basis of Disease, Amsterdam, ELSEVIER SCIENCE BV, 2020, 0925-4439

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10601 Cell biology

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 5.187

RIV identification code

RIV/00216224:14110/20:00116370

Organization unit

Faculty of Medicine

UT WoS

000561985900013

Keywords in English

CFTR modulators; Theranostics; Rare mutations; Intestinal organoids; Precision medicine

Tags

Tags

International impact, Reviewed
Změněno: 9/9/2020 08:08, Mgr. Tereza Miškechová

Abstract

V originále

Background: For most of the > 2000 CFTR gene variants reported, neither the associated disease liability nor the underlying basic defect are known, and yet these are essential for disease prognosis and CFTR-based therapeutics. Here we aimed to characterize two ultra-rare mutations - 1717-2A > G (c.1585-2A > G) and S955P (p.Ser955Pro) - as case studies for personalized medicine. Methods: Patient-derived rectal biopsies and intestinal organoids from two individuals with each of these mutations and F508del (p.Phe508del) in the other allele were used to assess CFTR function, response to modulators and RNA splicing pattern. In parallel, we used cellular models to further characterize S955P independently of F508del and to assess its response to CFTR modulators. Results: Results in both rectal biopsies and intestinal organoids from both patients evidence residual CFTR function. Further characterization shows that 1717-2A > G leads to alternative splicing generating < 1% normal CFTR mRNA and that S955P affects CFTR gating. Finally, studies in organoids predict that both patients are responders to VX-770 alone and even more to VX-770 combined with VX-809 or VX-661, although to different levels. Conclusion: This study demonstrates the high potential of personalized medicine through theranostics to extend the label of approved drugs to patients with rare mutations.