Publications

2024/07/22
Paper

The Journal of Dermatology

Involvement of the genus Corynebacterium in the pathogenesis of pigmented intratarsal keratinous cyst

A paper utilizing our 16S rRNA Bacterial Flora Analysis was published by Dr. Miyuki Yoshikawa, Dr. Daiki Rokunohe et al., Hirosaki University Graduate School of Medicine, Department of Dermatology, has published a paper on inflammation and bacterial flora in intratarsal keratinous cysts (IKC), which are pigmented intraocular keratinocysts.
IKC, a benign cystic lesion of the eyelid, usually appears as a yellow to white cyst, but rarely as a brown or gray-blue cyst, affecting the clinical diagnosis. The cause of this phenomenon is not known. The author's research group has observed a localized lymphocytic infiltrate in the melanocyte-rich, melanin-positive area below the cyst wall in pigmented IKC, and has analyzed the bacterial colonies within the cyst for the presence of Corynebacterium species. The etiology of pigmented IKC related to inflammation and bacterial flora was discussed in the paper.
We have performed 16S rRNA Bacterial Flora Analysis using the bacterial colonies in the cysts described in the paper.

2024/07/22
Paper

Pathology International

Solid tumor
Regulatory T-cells activated in metastatic draining lymph nodes possibly suppress cancer immunity in cancer tissues of head and neck squamous cell cancer

A paper utilizing our TCR Repertoire Analysis was published by Dr. Susumu Suzuki et al., Aichi Medical University Research Creation Support Center that suggests regulatory T cells activated in metastatic lymph nodes suppress cancer immunity in head and neck squamous cell carcinoma (HNSCC) cancer tissue.

Since the mechanism by which activated regulatory T cells (Tregs) suppress cancer immunity is unknown, to elucidate this mechanism, the research group performed T cell receptor (TCR) repertoire analysis was performed. We found that the TCR repertoires were biased in cancer tissue and metastatic DLNs (M-DLNs) compared to non-metastatic DLNs, and that the TCR repertoires of Tregs and CD8+ T cells between M-DLNs and cancer tissue were more similar than in other sites. These results suggest that Treg and CD8+ T cells are activated by cancer antigens such as neoantigens and shared antigens in M-DLNs and cancer tissues, and that Tregs suppress CD8+ T cell function in a cancer antigen-specific manner in M-DLNs and cancer tissues. Furthermore, M-DLN may be a source of Tregs and CD8+ T cells that are recruited to cancer tissues. These findings suggest that antigen-specific targeting of Tregs with M-DLN may represent a novel immunotherapeutic strategy for squamous cell carcinoma of the head and neck.

We have performed a TCR Repertoire Analysis using Tregs and conventional T cells in peripheral blood, influx regional lymph nodes (DLNs), and cancer tissues of patients with squamous cell carcinoma of the head and neck (HNSCC) as shown in the article.

2024/07/01
Paper

Cell Stem Cell

Basal immunity
Human iPSC-derived CD4+ Treg-like cells engineered with chimeric antigen receptors control GvHD in a xenograft model

A paper utilizing our TCR Repertoire Analysis was published by Dr. Hisashi Yano, Shin Kaneko Laboratory, CiRA, Kyoto University.
In this paper, they report a success in producing CD4+ Treg-like cells derived from human iPS cells by inducing FOXP3 expression.
Using our TCR Repertoire Analysis, it was confirmed that cells cultured from non-T cell-derived iPS cells reconstitute various TCRα and β genes during their differentiation, constituting a polyclonal TCR repertoire.

2024/05/29
Paper

nature Scientific Reports

Chronic ingestion of soy peptide supplementation reduces aggressive behavior and abnormal fear memory caused by juvenile social isolation

A paper utilizing our Bacterial Flora Analysis was published by Dr. Hideki Tamura, et al., Laboratory of Bifunctional Science, School of Pharmacy and Pharmaceutical Sciences, Hoshi University.
In this paper, they investigated the effects of soy peptides on the composition of the gut microbiota have been examined, suggesting that they may provide evidence that the gut microbiota influences brain function via metabolic, endocrine, immune, and neural pathways.
Our 16S rRNA Bacterial Flora Analysis was performed using mouse feces in the paper.

2024/05/07
Paper

Molecular Brain

Peripheral-central network analysis of cancer cachexia status accompanied by the polarization of hypothalamic microglia with low expression of inhibitory immune checkpoint receptors

A paper utilizing our Bacterial Flora Analysis was published by Dr. Yukari Suda, Dr. Yusuke Hamada et al., Department of Pharmacology, Hoshi University School of Pharmacy and Pharmaceutical Sciences.
In this paper, they investigated to demonstrate the relationship between the induction of cancer cachexia and its effects on the intestinal microbiota.
And they suggest that the release of LPS from the gut microbiota may exacerbate the inflammatory state of the hypothalamus with polarization toward microglia expressing low levels of inhibitory immune checkpoint receptors.
Our 16S rRNA Bacterial Flora Analysis was performed using mouse feces in the paper.

2024/03/21
Paper

Int J Hematol.

Hematological malignancy
Decade-long WT1-specific CTLs induced by WT1 peptide vaccination

A paper utilizing our TCR Repertoire Analysis was published by Dr. Tatsuya Suwabe et al., Department of Hematopoietic Stem Cell Transplantation, Niigata University Medical and Dental Hospital.
In this paper, they investigated how long and to what extent WT1-specific CD8+ cytotoxic T cells (CTL) persisted after WT1 peptide vaccination, and reported that the immune response persisted for more than 10 years even after vaccination was discontinued.
Our TCR Repertoire Analysis was performed using WT1-specific CTLs after mixed lymphocyte peptide culture and revealed the diversity of WT1-specific CTLs 11 years after vaccination.

2024/02/07
Paper

Journal for ImmunoTherapy of Cancer

Solid tumor

Dr. Kosaku Mimura in Department of Gastrointestinal Tract Surgery, Fukushima Medical University School of Medicine has published a paper in "Journal for ImmunoTherapy of Cancer" titled "Combination of oligo-fractionated irradiation with nivolumab can induce immune modulation in gastric cancer".

2023/12/27
Paper

Journal of Clinical Biochemistry and Nutrition

Dr. Naoko Oda in Department of clinical nutrition and Food management, Institute of Biochemical Sciences, Tokushima University Graduate School has published a paper in "Journal of Clinical Biochemistry and Nutrition" titled "Dietary phosphate disturbs of gut microbiome in mice".

2023/11/22
Paper

INTERNATIONAL JOURNAL OF INFECTIOUS DISEASES

Clinical immunity

Dr. Meng Ling Moi in School of International Health, Graduate School of Medicine, the University of Tokyo has published a paper in "INTERNATIONAL JOURNAL OF INFECTIOUS DISEASES" titled "Pre-existing cross-reactive neutralizing activity against SARS-CoV-2 and seasonal coronaviruses prior to the COVID-19 pandemic (2014-2019) with limited immunity against recent emerging SARS-CoV-2 variants, Vietnam".

2023/11/16
Paper

Current issues in molecular biology

Solid tumor

Dr. Takuro Kobayashi in Department of Urology, Graduate School of Medicine, Juntendo University, Tokyo has published a paper in "Current issues in molecular biology" titled "T-Cell Receptor Repertoire as a Predictor of Immune-Related Adverse Events in Renal Cell Carcinoma".

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