J 2024

Deubiquitinase BAP1 is crucial for surface expression of T cell receptor (TCR) complex, T cell-B cell conjugate formation, and T cell activation

RADHAKRISHNAN, Dhwani; Jana KOTULOVA; Lucie HOFMANOVA; Anjana Anilkumar SITHARA; Marcello TURI et al.

Základní údaje

Originální název

Deubiquitinase BAP1 is crucial for surface expression of T cell receptor (TCR) complex, T cell-B cell conjugate formation, and T cell activation

Autoři

RADHAKRISHNAN, Dhwani; Jana KOTULOVA; Lucie HOFMANOVA; Anjana Anilkumar SITHARA; Marcello TURI; David ZIHALA; Michal DURECH; Jan VRANA; Valeria ULERI; Veronika NIEDERLOVA; Ondrej STEPANEK; Zuzana CHYRA; Tomas JELINEK; Roman HAJEK a Matous HRDINKA

Vydání

Journal of Leukocyte Biology, New York, Society for Leukocyte Biology, 2024, 0741-5400

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30201 Cardiac and Cardiovascular systems

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 3.100

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:90242/24:00143941

Organizační jednotka

CIISB III

EID Scopus

Klíčová slova anglicky

BAP1; CRISPR-Cas9 screening; T cell activation; T cell receptor (TCR); T cell-B cell conjugates

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 11. 3. 2026 14:30, Mgr. Eva Dubská

Anotace

V originále

The adaptive immune response critically hinges on the functionality of T cell receptors, governed by complex molecular mechanisms, including ubiquitination. In this study, we delved into the role of in T cell immunity, focusing on T cell-B cell conjugate formation and T cell activation. Using a CRISPR-Cas9 screening approach targeting deubiquitinases genes in Jurkat T cells, we identified BAP1 as a key positive regulator of T cell-B cell conjugate formation. Subsequent investigations into BAP1 knockout cells revealed impaired T cell activation, evidenced by decreased MAPK and NF-kB signaling pathways and reduced CD69 expression upon T cell receptor stimulation. Flow cytometry and qPCR analyses demonstrated that BAP1 deficiency leads to decreased surface expression of T cell receptor complex components and reduced mRNA levels of the co-stimulatory molecule CD28. Notably, the observed phenotypes associated with BAP1 knockout are specific to T cells and fully dependent on BAP1 catalytic activity. In-depth RNA-seq and mass spectrometry analyses further revealed that BAP1 deficiency induces broad mRNA and protein expression changes. Overall, our findings elucidate the vital role of BAP1 in T cell biology, especially in T cell-B cell conjugate formation and T cell activation, offering new insights and directions for future research in immune regulation.

Návaznosti

90242, velká výzkumná infrastruktura
Název: CIISB III