Hiroyuki Harada

ORCID: 0000-0002-8078-0195
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About
Contact & Profiles
Research Areas
  • Oral and Maxillofacial Pathology
  • Salivary Gland Tumors Diagnosis and Treatment
  • Cancer Diagnosis and Treatment
  • Bone Tumor Diagnosis and Treatments
  • Head and Neck Cancer Studies
  • Lymphatic System and Diseases
  • Ear and Head Tumors
  • Glycosylation and Glycoproteins Research
  • Lymphatic Disorders and Treatments
  • Monoclonal and Polyclonal Antibodies Research
  • Tumors and Oncological Cases
  • Head and Neck Surgical Oncology
  • Cancer Immunotherapy and Biomarkers
  • Reconstructive Surgery and Microvascular Techniques
  • Vascular Malformations and Hemangiomas
  • Oral Health Pathology and Treatment
  • HER2/EGFR in Cancer Research
  • Sarcoma Diagnosis and Treatment
  • Cancer Cells and Metastasis
  • Lymphoma Diagnosis and Treatment
  • Soft tissue tumor case studies
  • Cancer and Skin Lesions
  • Lung Cancer Treatments and Mutations
  • Immunotherapy and Immune Responses
  • Veterinary Oncology Research

Tokyo Medical and Dental University
2016-2025

The University of Tokyo
2018-2023

Health Sciences University of Hokkaido
2021

Universitas Jember
2018-2019

Prefectural University of Hiroshima
2018

Kobe City Medical Center General Hospital
2013-2014

Kobe City Nishi-Kobe Medical Center
2014

Tokyo University of Science
2009-2011

Universidade do Oeste Paulista
2010

Sophia University
2009

Calcifying cystic odontogenic tumors (CCOTs) are benign that form abnormally keratinized ghost cells. Mutations in CTNNB1, which encodes beta-catenin, have been implicated the development of these tumors, but a causal relationship has not definitively established. Thus, mutational hot spots 50 cancer genes were examined by targeted next-generation sequencing 11 samples CCOT. other genes, observed 10 cases. These mutations constitutively activate beta-catenin signaling abolishing...

10.1371/journal.pone.0180224 article EN cc-by PLoS ONE 2017-06-28

Podoplanin (PDPN) is known to be expressed in normal tissues, including lymphatic endothelial cells, renal podocytes, and type I lung alveolar cells. Monoclonal antibodies (mAbs) against human, mouse, rat, rabbit, dog, cat, bovine PDPN have already been established; however, mAbs pig (pPDPN) are lacking. In the present study, mice were immunized with pPDPN-overexpressing Chinese hamster ovary (CHO)-K1 cells (CHO/pPDPN), hybridomas producing pPDPN identified by flow cytometric screening. One...

10.1089/mab.2018.0048 article EN Monoclonal Antibodies in Immunodiagnosis and Immunotherapy 2019-02-01

Monoclonal antibodies (mAbs) against not only human, mouse, and rat but also rabbit, dog, cat, bovine, pig, horse podoplanins (PDPNs) have been established in our previous studies. PDPN is used as a lymphatic endothelial cell marker pathological diagnoses. However, mAbs Tasmanian devil (tasPDPN), which are useful for immunohistochemical analysis, remain to be developed. Herein, mice were immunized with tasPDPN-overexpressing Chinese hamster ovary (CHO)-K1 (CHO/tasPDPN) cells, hybridomas...

10.1016/j.bbrep.2019.100631 article EN cc-by Biochemistry and Biophysics Reports 2019-04-01

CD133, also known as prominin-1, was first described a cell surface marker on early progenitor and hematopoietic stem cells. It is five-domain transmembrane protein composed of an N-terminal extracellular tail, two small cytoplasmic loops, large loops containing seven potential glycosylation sites, short C-terminal intracellular tail. CD133 has been used to identify cancer cells derived from primary solid tumors prognostic gliomas. Herein, we developed novel anti-CD133 monoclonal antibodies...

10.1089/mab.2017.0031 article EN Monoclonal Antibodies in Immunodiagnosis and Immunotherapy 2017-10-01

Abstract Background Oral lichen planus (OLP) is a chronic inflammatory oral mucosa disease that recognized as an potentially malignant disorder. However, the nature of OLP remains unclear. Methods We designed this study to examine demographic and clinical characteristics patients with evaluate associated transformation rate. A total 565 histopathological diagnosis who presented at our department between 2001 2017 were retrospectively studied. Patients had features lichenoid lesions (OLLs)...

10.1186/s12903-021-01652-7 article EN cc-by BMC Oral Health 2021-06-10

Podoplanin (PDPN) is expressed in several normal tissues, such as lymphatic endothelial cells, podocytes of renal glomerulus, and type I alveolar cells lung. PDPN activates platelet aggregation by binding to C-type lectin-like receptor-2 (CLEC-2) on platelet. Although monoclonal antibodies (mAbs) against human PDPN, mouse rat rabbit dog bovine have been established, anticat (cPDPN) mAbs not developed. In this study, we immunized mice with Chinese hamster ovary (CHO)-K1 cell lines expressing...

10.1089/mab.2017.0027 article EN Monoclonal Antibodies in Immunodiagnosis and Immunotherapy 2017-07-24

Abstract The aims of this study were to evaluate in vivo the biological responses implants composed biodegradable anodized WE43 (containing magnesium yttrium, rare earth elements and zirconium; Elektron SynerMag®) alloy, monolithic alloy poly‐ l ‐lactic acid (PLLA), which are commonly used materials clinic settings, effectiveness as bone screws. osteosynthesis was evaluated using a fracture model involving tibia beagle dogs. For implants, radiological, histological evaluation revealed that...

10.1002/jbm.b.33470 article EN Journal of Biomedical Materials Research Part B Applied Biomaterials 2015-06-22

Podoplanin (PDPN), also known as T1alpha, has been used a lung type I alveolar cell marker in the pathophysiological condition. Although we have established several monoclonal antibodies (mAbs) against mammalian PDPNs, mAbs tiger PDPN (tigPDPN), which are useful for immunohistochemical analysis, remain to be developed. In this study, immunized mice with tigPDPN-overexpressing Chinese hamster ovary (CHO)-K1 cells (CHO/tigPDPN) and screened hybridomas producing tigPDPN using flow cytometry....

10.1089/mab.2019.0003 article EN Monoclonal Antibodies in Immunodiagnosis and Immunotherapy 2019-04-01

Recent studies have shown that Notch signaling is involved in many types of cancers, including oral squamous cell carcinomas (OSCCs). However, the role tumor microenvironment not yet fully understood. In this study, we investigated roles NOTCH3 cancer associated fibroblasts (CAFs) OSCCs. Immunohistochemical study 93 human tongue OSCC cases indicated about one third OSCCs showed expression CAFs, and significantly correlated with tumor-size. vitro lines, especially HO1-N-1 cells stimulated...

10.1371/journal.pone.0154112 article EN cc-by PLoS ONE 2016-04-28

Monoclonal antibodies (mAbs) against human, mouse, rat, rabbit, dog, cat, and bovine podoplanin (PDPN), a lymphatic endothelial cell marker, have been established in our previous studies. However, mAbs horse PDPN (horPDPN), which are useful for immunohistochemical analysis, remain to be developed. In the present study, mice were immunized with horPDPN-overexpressing Chinese hamster ovary (CHO)-K1 cells (CHO/horPDPN), hybridomas producing horPDPN screened using flow cytometry. One of mAbs,...

10.1016/j.bbrep.2019.01.009 article EN cc-by Biochemistry and Biophysics Reports 2019-02-02

CD44 is widely expressed on the surface of most tissues and all hematopoietic cells, regulates many genes associated with cell adhesion, migration, proliferation, differentiation, survival. has also been studied as a therapeutic target in several cancers. Previously, an anti‑CD44 monoclonal antibody (mAb), C44Mab‑5 (IgG1, kappa) was established by immunizing mice CD44‑overexpressing Chinese hamster ovary (CHO)-K1 cells. recognized isoforms, showed high sensitivity for flow cytometry...

10.3892/or.2020.7735 article EN cc-by Oncology Reports 2020-08-14

Abstract The distribution of cells expressing SARS‐CoV‐2 entry factor angiotensin‐converting enzyme 2 (ACE2) and transmembrane serine protease (TMPRSS2) in human oral tissues were tested. investigation was conducted with normal flesh tissue paraffin‐embedded specimens. ACE2 TMPRSS2 expression detected all subjects the mucosa keratinized stratified squamous epithelia tongue non‐keratinized lip cheek. It found that is expressed cytoplasm on cell membrane mainly stratum granulosum while...

10.1111/joa.13391 article EN cc-by Journal of Anatomy 2021-01-09

The development of protein-specific antibodies is essential for understanding a wide variety biological phenomena. Parasitic and viral infections cancers are known to occur within California sea lion (Zalophus californianus) populations. However, sensitive specific monoclonal (mAbs) the pathophysiological analysis tissues have not yet been developed. A type I transmembrane glycoprotein, podoplanin (PDPN), diagnostic marker lymphatic endothelial cells. We previously developed several...

10.1089/mab.2021.0011 article EN Monoclonal Antibodies in Immunodiagnosis and Immunotherapy 2021-05-27

Podocalyxin (PODXL) overexpression is associated with progression, metastasis, and poor outcomes in cancers. We recently produced the novel anti-PODXL monoclonal antibody (mAb) PcMab-47 (IgG1, kappa). Herein, we engineered into 47-mG2a, a mouse IgG2a-type mAb, to add antibody-dependent cellular cytotoxicity (ADCC). further developed 47-mG2a-f, core fucose-deficient type of 47-mG2a augment its ADCC. Immunohistochemical analysis oral cancer tissues using revealed that latter stained squamous...

10.18632/oncotarget.25132 article EN Oncotarget 2018-04-27

The multicellular spheroid model partly mimics tumor microenvironments in vivo and has been reported plenty of studies regarding radiosensitivity. However, clear isolation quiescent proliferating cells live conditions quite difficult owing to technical limitations; therefore, comprehensive characterization could not be done thus far. In this study, we succeeded separately isolating different cell types using a fluorescent ubiquitination‐based cycle indicator (Fucci) determining their...

10.1111/cas.13178 article EN cc-by-nc-nd Cancer Science 2017-01-30

Podoplanin (PDPN) has been utilized as a lymphatic endothelial cell marker especially in pathological diagnoses. Therefore, sensitive and specific monoclonal antibodies (mAbs) targeting PDPN are needed for immunohistochemical analyses using formalin-fixed paraffin-embedded tissues. Recently, anti-PDPN mAbs against many species, such human, mouse, rat, rabbit, dog, cat, bovine, pig, horse were established our studies. However, anticetacean (whale) (wPDPN) not yet. In this study, we immunized...

10.1089/mab.2019.0013 article EN Monoclonal Antibodies in Immunodiagnosis and Immunotherapy 2019-06-01

Sensitive and specific monoclonal antibodies (mAbs) against not only human but also mouse, rat, rabbit, dog, cat, bovine, pig, horse podoplanins (PDPNs) have been established in our previous studies. However, anti-goat PDPN (gPDPN) has yet. utilized as a lymphatic endothelial cell marker especially pathological diagnoses; therefore, mAbs for immunohistochemical analyses using formalin-fixed paraffin-embedded tissues are needed. Although we recently demonstrated that an anti-bovine mAb,...

10.1016/j.heliyon.2019.e02063 article EN cc-by Heliyon 2019-07-01

Podoplanin (PDPN) is a type I transmembrane glycoprotein that expressed in normal tissues, including renal corpuscles and lung alveolar cells. Monoclonal antibodies (mAbs) against human, mouse, rat, rabbit, dog, cat, bovine PDPNs have already been established; however, antipig PDPN (pPDPN) mAbs not. We therefore immunized mice with pPDPN-overexpressing Chinese hamster ovary (CHO)-K1 cells (CHO/pPDPN), screened hybridomas, which are producing anti-pPDPN mAbs. One of mAbs, PMab-210 (an IgG1,...

10.1089/mab.2018.0038 article EN Monoclonal Antibodies in Immunodiagnosis and Immunotherapy 2019-01-25

BRD4, a member of the bromodomain and extra-terminal domain (BET) protein family, plays role in organization super-enhancers transcriptional activation oncogenes cancer is recognized as promising target for therapy. microRNAs (miRNAs), endogenous small noncoding RNAs, cause mRNA degradation or inhibit translation their genes by binding to complementary sequences. miRNA mimics simultaneously targeting several tumor-promoting BRD4 may be useful therapeutic agents tumor-suppressive miRNAs...

10.1016/j.ymthe.2020.04.001 article EN cc-by-nc-nd Molecular Therapy 2020-04-11

HER3 belongs to the epidermal growth factor receptor (EGFR) family and is known form an active heterodimer with other three members EGFR, HER2, HER4. overexpressed in lung, breast, colon, prostate, gastric cancers. In present study, we developed validated anti‑HER3 monoclonal antibody (mAb), H3Mab‑17 (IgG2a, kappa), by immunizing mice HER3‑overexpressed CHO‑K1 cells (CHO/HER3). was found react specifically endogenous colorectal carcinoma cell lines, using flow cytometry. The KD for CHO/HER3...

10.3892/or.2021.8124 article EN cc-by-nc-nd Oncology Reports 2021-06-28
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