Back to Search
Start Over
Peripheral tuberculin purified protein derivative specific T cell immunoreactivity dynamics in non-muscle invasive bladder cancer patients receiving bacillus Calmette-Guerin instillation treatment.
- Source :
-
Frontiers in oncology [Front Oncol] 2022 Oct 27; Vol. 12, pp. 927410. Date of Electronic Publication: 2022 Oct 27 (Print Publication: 2022). - Publication Year :
- 2022
-
Abstract
- Intravesical bacillus Calmette-Guerin (BCG) instillation is recommended as an adjuvant therapy for intermediate-risk and high-risk non-muscle invasive bladder cancer (NMIBC) after transurethral resection of bladder tumor (TURBt) with nearly 70% reoccurrence. In the present study, we investigated the dynamics of peripheral purified protein derivative (PPD)-specific immune responses along the treatment. Intravesical BCG instillation caused a significant increase in peripheral PPD-specific IFN-γ release of NMIBC patients, when compared to those receiving chemo-drug instillation. Through a follow-up study, we detected rapid increase in PPD-specific IFN-γ, IL-2, and IL-17A producing CD4 <superscript>+</superscript> and CD8 <superscript>+</superscript> T cells in the induction phase. Interestingly, the frequencies of PPD-specific IFN-γ and IL-2 producing CD4 <superscript>+</superscript> and CD8 <superscript>+</superscript> T cells decreased dramatically after induction treatment and were restored after BCG re-instillation, whereas IL-17A-producing T cells remained at the maintenance phase. However, we only observed that the percentages of peripheral CD8 <superscript>+</superscript> T cells were significantly higher in BCG responder patients than those in BCG refractory patients at the baseline with the potential of predicting the recurrence. A more dramatic increase in PPD-specific IFN-γ and IL-2 producing CD4 <superscript>+</superscript> and CD8 <superscript>+</superscript> T cells after one and two dose BCG instillations was observed in refractory NMIBC patients. Therefore, regional BCG instillation induced transient peripheral PPD-specific T cell responses, which could be restored through repetitive BCG instillation. Higher proportions of peripheral CD8 <superscript>+</superscript> T cells at baseline were associated with better responses to BCG instillation for the prevention of recurrence of bladder cancer.<br />Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.<br /> (Copyright © 2022 Duan, Xia, Xu, Chen, Ding, Wang, Sun, Yao, Zhang, Wu, Ji, Wang, Qian, Wang and Shen.)
Details
- Language :
- English
- ISSN :
- 2234-943X
- Volume :
- 12
- Database :
- MEDLINE
- Journal :
- Frontiers in oncology
- Publication Type :
- Academic Journal
- Accession number :
- 36387134
- Full Text :
- https://doi.org/10.3389/fonc.2022.927410