BACKGROUND The prognostic effect of tumor infiltrating CD8+ cytotoxic lymphocytes (CTLs) in breast cancer is controversial. We analyzed the association between CD8+ CTLs and survival of untreated node-negative breast cancer patients. MATERIAL AND METHODS CD8+ CTLs infiltrate was evaluated by immunostaining in a cohort of 332 node-negative breast cancer patients with a median follow-up of 152 ...

CD8(+) cytotoxic T lymphocytes (CTLs) have potent antitumor activity and therefore are leading candidates for use in tumor immunotherapy. The application of CTLs for clinical use has been limited by the susceptibility of ex vivo-expanded CTLs to become dysfunctional in response to immunosuppressive microenvironments. Here, we developed a microRNA-targeting (miRNA-targeting) approach that augmen...

We previously showed (E. Clave et al., J. Immunother., 22: 1-6, 1999; J. Molldrem et al., Blood, 88: 2450-2457, 1996) that PR1, a human-lymphocyte-antigen (HLA)-A2.1-restricted peptide from proteinase 3, could be used to elicit CTLs from normal individuals. These CTLs showed HLA-restricted cytotoxicity and colony inhibition of myeloid leukemia cells that overexpress proteinase 3. In this study,...

In previous work, we observed that H-2k-restricted herpes simplex virus (HSV)-specific cytotoxic T lymphocytes (CTLs) were effectively able to lyse transfected target cells expressing HSV glycoprotein C (gC), but not cells expressing gB, gD or gE. To confirm and extend our observations on the specificity of anti-HSV CTLs, recombinant adenovirus (Ad) vectors able to express HSV-1 gB or gC (AdgB2...

Background: Vaccines based on virus-like particles are effective against Human Papilloma Virus (HPV) infection; however, they have not shown a therapeutic effect against HPV-associated diseases. New immunotherapy strategies based on immune responses against tumor antigens can positively affect the clearance of HPV-associated lesions. Objective: To generate two therapeutic fusion DNA vaccines (o...

You have accessJournal of UrologyKidney Cancer: Basic Research & Pathophysiology II (PD49)1 Sep 2021PD49-10 EFFECT OF CYTOTOXIC T LYMPHOCYTE REGENERATED FROM IPS CELLS IN PRECLINICAL MODELS RENAL CELL CARCINOMA Soki Kashima, Takuya Maeda, Kyoko Masuda, Seiji Nagano, Takamitsu Inoue, Takashi Kobayashi, Koji Terada, Yasutoshi Agata, Kazuyuki Numakura, Mitsuru Saito, Shintaro Narita, Masaki Yasuka...

Understanding the role of cytotoxic T lymphocytes (CTLs) in controlling HIV-1 infection is vital for vaccine design. However, it is difficult to assess the importance of CTLs in natural infection. Different human leukocyte antigen (HLA) class I alleles are associated with different rates of progression to AIDS, indicating that CTLs play a protective role. Yet virus clearance rates following ant...

The mechanisms by which cytotoxic T lymphocytes (CTLs) enter and are retained in nonlymphoid tissue are not well characterized. With a transgenic mouse expressing the NKG2D ligand retinoic acid early transcript 1ε (RAE1ε) in β-islet cells of the pancreas, we found that RAE1 expression was sufficient to induce the recruitment of adoptively transferred CTLs to islets. This was dependent on NKG2D ...

It is widely assumed that the development of memory CD8 T cells requires the escape of CTLs from programmed cell death. We show in this study that although serine protease inhibitor 6 (Spi6) is required to protect clonal bursts of CTLs from granzyme B-induced programmed cell death, it is not required for the development of memory cells. This conclusion is reached because memory cell precursors ...