Long Non-coding RNA GAS5 Regulates T Cell Functions via miR21-Mediated Signaling in People Living With HIV

Copyright © 2021 Nguyen, Nguyen, Zhao, Schank, Dang, Cao, Khanal, Chand Thakuri, Lu, Zhang, Li, Morrison, Wu, El Gazzar, Ning, Wang, Moorman and Yao..

T cells are critical for the control of viral infections and T cell responses are regulated by a dynamic network of non-coding RNAs, including microRNAs (miR) and long non-coding RNAs (lncRNA). Here we show that an activation-induced decline of lncRNA growth arrest-specific transcript 5 (GAS5) activates DNA damage response (DDR), and regulates cellular functions and apoptosis in CD4 T cells derived from people living with HIV (PLHIV) via upregulation of miR-21. Notably, GAS5-miR21-mediated DDR and T cell dysfunction are observed in PLHIV on antiretroviral therapy (ART), who often exhibit immune activation due to low-grade inflammation despite robust virologic control. We found that GAS5 negatively regulates miR-21 expression, which in turn controls critical signaling pathways involved in DNA damage and cellular response. The sustained stimulation of T cells decreased GAS5, increased miR-21 and, as a result, caused dysfunction and apoptosis in CD4 T cells. Importantly, this inflammation-driven T cell over-activation and aberrant apoptosis in ART-controlled PLHIV and healthy subjects (HS) could be reversed by antagonizing the GAS5-miR-21 axis. Also, mutation of the miR-21 binding site on exon 4 of GAS5 gene to generate a GAS5 mutant abolished its ability to regulate miR-21 expression as well as T cell activation and apoptosis markers compared to the wild-type GAS5 transcript. Our data suggest that GAS5 regulates TCR-mediated activation and apoptosis in CD4 T cells during HIV infection through miR-21-mediated signaling. However, GAS5 effects on T cell exhaustion during HIV infection may be mediated by a mechanism beyond the GAS5-miR-21-mediated signaling. These results indicate that targeting the GAS5-miR-21 axis may improve activity and longevity of CD4 T cells in ART-treated PLHIV. This approach may also be useful for targeting other infectious or inflammatory diseases associated with T cell over-activation, exhaustion, and premature immune aging.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:12

Enthalten in:

Frontiers in immunology - 12(2021) vom: 27., Seite 601298

Sprache:

Englisch

Beteiligte Personen:

Nguyen, Lam Ngoc Thao [VerfasserIn]
Nguyen, Lam Nhat [VerfasserIn]
Zhao, Juan [VerfasserIn]
Schank, Madison [VerfasserIn]
Dang, Xindi [VerfasserIn]
Cao, Dechao [VerfasserIn]
Khanal, Sushant [VerfasserIn]
Chand Thakuri, Bal Krishna [VerfasserIn]
Lu, Zeyuan [VerfasserIn]
Zhang, Jinyu [VerfasserIn]
Li, Zhengke [VerfasserIn]
Morrison, Zheng D [VerfasserIn]
Wu, Xiao Y [VerfasserIn]
El Gazzar, Mohamed [VerfasserIn]
Ning, Shunbin [VerfasserIn]
Wang, Ling [VerfasserIn]
Moorman, Jonathan P [VerfasserIn]
Yao, Zhi Q [VerfasserIn]

Links:

Volltext

Themen:

GAS5 long non-coding RNA, human
Gas5
HIV
Journal Article
LncRNA
MIRN21 microRNA, human
MiR-21
MicroRNAs
RNA, Long Noncoding
Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, Non-P.H.S.
T cell dysregulation

Anmerkungen:

Date Completed 23.06.2021

Date Revised 14.03.2023

published: Electronic-eCollection

Citation Status MEDLINE

doi:

10.3389/fimmu.2021.601298

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM323328342