Publications by authors named "Yataro Daigo"

Article Synopsis
  • * Results showed that a higher PRS was more strongly related to EGFR-positive LUAD cases (OR=8.63) than to EGFR-negative cases (OR=3.50), indicating a significant association based on mutation status.
  • * These findings imply that genetic susceptibility to LUAD differs in never-smoking East Asian women depending on whether the cancer has specific mutations, which could affect public health strategies and clinical practices.*
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Epidemiological studies suggest that poor nutrition during pregnancy predisposes offspring to the development of lifestyle-related noncommunicable diseases and psychiatric disorders later in life. However, the molecular mechanisms underlying this predisposition are not well understood. In our previous study, using rats as model animals, we showed that behavioral impairments are induced by prenatal undernutrition.

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Immune checkpoint inhibitors (ICIs) have been widely used as standard therapies for various cancers. However, in 20-30% of cases, ICIs can lead to immune-related adverse events (irAEs), which sometimes require discontinuation of treatment. Due to the increased risk of irAEs, patients with pre-existing autoimmune diseases (AI) are often advised against receiving ICIs.

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  • * The newly developed multi-ancestry PRS showed a strong correlation with LUAD risk, indicating that individuals in the highest PRS percentile had significantly increased risk compared to those in the lowest.
  • * Findings suggest that those in the highest risk category have a lifetime risk of about 6.69%, and they reach the average population's 10-year risk for LUAD by age 41, highlighting the importance of multi-ancestry PRS for better risk assessment in this group.
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  • The study evaluated the use of eSource direct data capture (DDC) in clinical trials, aiming to improve efficiency in an oncology trial in Japan by analyzing data entry times and site visits.
  • Results showed no difference in speed of data entry between DDC and traditional methods, but DDC allowed for finalizing data four days sooner, and reduced time spent on site for data verification.
  • Overall, the study suggests that implementing eSource DDC can enhance efficiency, particularly depending on the study’s structure and the volume of data collected.
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Despite advances in treatment and early detection, breast cancer remains one of the most common types of cancer and is the second leading cause of cancer death after lung cancer in women. Therefore, there is an urgent need to develop new biomarkers and therapeutic targets for the treatment of breast cancer. Based on gene expression profiles and subsequent screening performed in a preliminary study, kinesin family member 20B (KIF20B) was selected as a candidate target molecule, because it was highly and frequently expressed in all subtypes of breast cancer and barely detected in normal tissues.

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Background/aim: Immunohistochemical (IHC) staining has been routinely used to distinguish adenocarcinoma (ADC) and squamous cell carcinoma (SCC) of the lungs; however, it is challenging to obtain an accurate diagnosis, especially for cases with discrepancies between IHC and hematoxylin and eosin (H&E) staining results. This study aimed to clarify the clinicopathological characteristics of these discrepant cases.

Patients And Methods: Tissue microarray specimens from 321 patients with ADC and SCC were used for H&E and IHC staining of thyroid transcription factor 1 (TTF-1), Napsin A, cytokeratin 5/6 (CK5/6), p40, and p63.

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Tumor-promoting carcinoma-associated fibroblasts (CAFs), abundant in the mammary tumor microenvironment (TME), maintain transforming growth factor-β (TGF-β)-Smad2/3 signaling activation and the myofibroblastic state, the hallmark of activated fibroblasts. How myofibroblastic CAFs (myCAFs) arise in the TME and which epigenetic and metabolic alterations underlie activated fibroblastic phenotypes remain, however, poorly understood. We herein show global histone deacetylation in myCAFs present in tumors to be significantly associated with poorer outcomes in breast cancer patients.

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Background: The molecular pathology of diffuse large B cell lymphoma (DLBCL) has been extensively studied. Among DLBCL subtypes, the prognosis of CD5-positive DLBCL is worse than that of CD5-negative DLBCL, considering the central nervous system relapse and poor response to R-CHOP therapy. However, the molecular mechanisms underlying the tumorigenesis and progression of CD5-positive DLBCL remain unknown.

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Programmed cell death-ligand 1 (PD-L1) on tumor cells can be degraded to soluble form (sPD-L1) and enter circulation, however, the clinical significances of sPD-L1 in peripheral blood remains to be elucidated in non-small-cell lung cancer (NSCLC). We monitored plasma sPD-L1 levels during perioperative periods and evaluated PD-L1-positive cells in tumor tissues in patients with operable NSCLC. Then the correlation between preoperative plasma sPD-L1 levels and relapse-free survival (RFS) was analyzed retrospectively.

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Article Synopsis
  • CAFs are key players in breast cancer progression, and a specific experimental CAF line (exp-CAF) shows enhanced tumor-promoting abilities.
  • The transcription factor RUNX3 is found to be highly expressed in exp-CAFs compared to regular fibroblasts, and its expression is more prevalent in cancerous tissue of breast cancer patients.
  • Reducing RUNX3 levels in exp-CAFs led to decreased tumor growth and reduced cancer cell proliferation, indicating that RUNX3 may drive CAF functions that support tumor development and new blood vessel formation.
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  • Lung adenocarcinoma is the most prevalent form of lung cancer, and existing known genetic risk factors account for only a small portion of its heritability.
  • A comprehensive genome-wide association study involving nearly 22,000 cases and over 150,000 controls identified 12 new genetic variants linked to the disease, raising the count to 28 variants across 25 distinct locations in the genome.
  • The study emphasized that these genetic markers are particularly significant in East Asian populations, especially among never-smokers, and indicates that further research could inform better prevention and treatment strategies tailored to these populations.
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Epidermal growth factor receptor (EGFR)-mutated (mt) lung adenocarcinoma (LA) is refractory to immune checkpoint inhibitors (ICIs). However, the mechanisms have not been fully elucidated. CD8 T cell infiltration was significantly lower in EGFR-mt than in EGFR-wild-type LA, which was associated with suppression of chemokine expression.

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Background: Telomere dysfunction has been reported to be directly involved in carcinogenesis owing to chromosomal instability and immortalization; however, the clinicopathological significance of telomeres remains controversial. We have shown that telomere shortening occurs in normal-appearing duct cells at initiation and then continues during the progression of pancreatic cancer. In this study, we determined the clinicopathological and prognostic value of telomere length (TL) in cancer progression.

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Previous studies have investigated the usefulness of microRNA (miRNA/miR) expression data for the early detection of colorectal cancer (CRC). However, limited data are available regarding miRNAs that detect CRC before clinical diagnoses. Accordingly, the present study investigated the early detectability of CRC by miRNAs using the preserved serum samples of the cohort participants affected with CRC within 2 years of study enrollment.

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Oral cancer is a leading cause of cancer‑related death worldwide. Current treatment for oral cancer includes surgery, radiotherapy, and chemotherapy; however, their effectiveness is still limited. To identify a new prognostic biomarker and therapeutic target for oral cancer, the Opa interacting protein 5 (OIP5), which plays an essential role in the proper segregation of chromosomes, was examined.

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Since oral cancer (OC) is highly malignant and the efficacy of standard treatments is limited, the development of new therapeutics is urgently awaited. To identify potential molecular targets for new OC diagnosis and therapies, we screened oncoantigens by gene expression profile and focused on Holliday junction recognition protein (HJURP), a mammalian centromere‑specific chaperone. HJURP was found to be highly expressed in the majority of OC cell lines and tissues as compared to normal oral epithelial cells.

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Recent evidence indicates that RNA-dependent RNA polymerase (RdRP) activity of human telomerase reverse transcriptase (hTERT) regulates expression of target genes and is directly involved in tumor formation in a telomere-independent manner. Non-canonical function of hTERT has been considered as a therapeutic target for cancer therapy. We have previously shown that hTERT phosphorylation at threonine 249 (p-hTERT), which promotes RdRP activity, is an indicator of an aggressive phenotype and poor prognosis in liver and pancreatic cancers, using two cohorts with small sample sizes with polyclonal p-hTERT antibody.

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There are no universal tools to predict the necessity of high-dose opioid use for cancer-related pain. Early recognition and interventions for intractable cancer pain could minimize the distress of palliative patients. We sought to identify the clinical factors associated with high-dose opioid use in advanced cancer patients to recognize palliative patients who would develop intractable cancer pain, as early as possible.

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Programmed cell death-ligand 1 (PD-L1) expression on tumor cells is induced by interferon-gamma, suggesting the induction of an anti-tumor immune response. In turn, binding of PD-L1 to programmed cell death 1 (PD-1) triggers an immune checkpoint pathway that contributes to tumor growth. Though it remains to be elucidated, the clinical significance of PD-L1 expression might vary with tumor progression in non-small-cell lung cancer (NSCLC).

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The overwhelming majority of participants in current genetic studies are of European ancestry. To elucidate disease biology in the East Asian population, we conducted a genome-wide association study (GWAS) with 212,453 Japanese individuals across 42 diseases. We detected 320 independent signals in 276 loci for 27 diseases, with 25 novel loci (P < 9.

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The aim of the present study was to identify novel prognostic biomarkers and therapeutic targets for breast cancer; thus, genes that are frequently overexpressed in several types of breast cancer were screened. Kinesin family member 20A (KIF20A) was identified as a candidate molecule during this process. Immunohistochemical staining performed using tissue microarrays from 257 samples of different breast cancer subtypes revealed that KIF20A was expressed in 195 (75.

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Ovarian cancer is the second-most lethal gynecological malignancy and the seventh-commonest cause of cancer-related death in women around the world. Most of the ovarian cancer patients are diagnosed at advanced stages and suffer from recurrence after primary cytoreductive surgery and standard first-line chemotherapy. Thus, the successful management of ovarian cancer patients requires the identification of factors that contribute to progression and relapse.

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The mortality of colorectal cancer is expected to increase in some countries including the United States, which necessitates the identification of new molecules that help in prognosis assessment and survival improvement. In this brief report, we evaluated the potential of interleukin-34 (IL-34) as a prognostic factor in colorectal cancer. IL-34 was reported for the first time in 2008 as a novel cytokine that controls the biology of the myeloid cell lineage.

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