Mamoru Ueda

Effects of ipsc-derived mesenchymal stem cell evs on bone formation

Honoka Maekawa, Mamoru Ueda, Yusuke Nishiguchi, Junichiro Jo et autres

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GPX4 and FSP1 Coinhibition Uncovers a Therapeutic Vulnerability in Oral Squamous Cell Carcinoma

Hiroki Ishikawa, Mamoru Ueda, Norifumi Takasugi, Tamaki Nakanishi et autres

ABSTRACT Background Ferroptosis, an iron‐dependent form of regulated cell death driven by lipid peroxidation, has recently emerged as a therapeutic vulnerability in resistant cancers. While glutathione peroxidase 4 (GPX4) has been established as a central ferroptosis suppressor, ferroptosis suppressor protein 1 has …

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Affine super Yangians and non-rectangular W-superalgebras

Mamoru Ueda

Abstract We construct four edge contractions for the affine super Yangian of type A . As an application, by using these edge contractions, we give a homomorphism from the affine super Yangian of type A to the universal enveloping algebra of the …

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Bone regeneration using three‐dimensional spheroids derived from dedifferentiated fat cells

Mamoru Ueda, Kenichirou Yasui, Hidetoshi Morikuni, Yoshiya Hashimoto et autres

Abstract Aim Dedifferentiated fat (DFAT) cells, similar to mesenchymal stem cells (MSCs), are gaining attention owing to their minimally invasive nature. We aimed to evaluate the effects of 3D DFAT spheroids on bone regeneration by implantation into rat skull defects. Methods Adipose …

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Two homomorphisms from the affine Yangian associated with $$\widehat{\mathfrak {sl}}(n)$$ to the affine Yangian associated with $$\widehat{\mathfrak {sl}}(n+1)$$

Mamoru Ueda

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Optimized human dedifferentiated fat cells from the buccal fat pad-derived osteoinductive extracellular vesicles promote osteoblast differentiation

Yusuke Nishiguchi, Mamoru Ueda, Hirohito Kubo, Jun‐ichiro Jo et autres

Background/purpose: Bone reconstruction in the maxillofacial region typically relies on autologous bone grafting, which presents challenges, including donor site complications and graft limitations. Recent advances in tissue engineering have identified highly pure and proliferative dedifferentiated fat cells (DFATs) as promising alternatives. Herein, …

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Affine Yangians and some cosets of non-rectangular $W$-algebras

Mamoru Ueda

We construct a homomorphism from the affine Yangian associated with $\widehat{\mathfrak{sl}}(q_u-q_{u+1})$ to the universal enveloping algebra of a $W$-algebra associated with $\mathfrak{gl}(\sum_{s=1}^lq_s)$ and a nilpotent element of type $(1^{q_1-q_2},2^{q_2-q_3},\dots,(l-1)^{q_{l-1}-q_l},l^{q_l})$ by using the coproduct and evaluation map for the affine Yangian and the …

Two Homomorphisms from the affine Yangian associated with $\widehat{\mathfrak{sl}}(n)$ to the affine Yangian associated with $\widehat{\mathfrak{sl}}(n+1)$

Mamoru Ueda

We construct a homomorphism from the affine Yangian $Y_{\hbar,\varepsilon+\hbar}(\widehat{\mathfrak{sl}}(n))$ to the affine Yangian $Y_{\hbar,\varepsilon}(\widehat{\mathfrak{sl}}(n+1))$ which is different from the one in arXiv:2312.09933. By using this homomorphism, we give a homomorphism from $Y_{\hbar,\varepsilon}(\widehat{\mathfrak{sl}}(n))\otimes Y_{\hbar,\varepsilon+n\hbar}(\widehat{\mathfrak{sl}}(m))$ to $Y_{\hbar,\varepsilon}(\widehat{\mathfrak{sl}}(m+n))$. As an application, we construct a homomorphism …

A peripheral osteoma of the mandibular coronoid process

Yusuke Nishiguchi, Masahiro Watanabe, Shoji Ikebe, Komachi Hase et autres

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Notes on a homomorphism from the affine Yangian associated with $\hat{\mathfrak{sl}}(n)$ to the affine Yangian associated with $\widehat{\mathfrak{sl}}(n+1)$

Mamoru Ueda

In the previous paper, we constructed a homomorphism from the affine Yangian associated with $\widehat{\mathfrak{sl}}(n)$ to the standard degreewise completion of the affine Yangian associated with $\widehat{\mathfrak{sl}}(n+1)$. In this article, by using this homomorphism, we construct homomorphisms from the affine Yangian to …

A homomorphism from the affine Yangian $Y_{\hbar,\varepsilon}(\widehat{\mathfrak{sl}}(n))$ to the affine Yangian $Y_{\hbar,\varepsilon}(\widehat{\mathfrak{sl}}(n+1))$

Mamoru Ueda

We construct a homomorphism from the affine Yangian $Y_{\hbar,\varepsilon}(\widehat{\mathfrak{sl}}(n))$ to the affine Yangian $Y_{\hbar,\varepsilon}(\widehat{\mathfrak{sl}}(n+1))$. We also give the relationship between this homomorphism and the one from the affine Yangian $Y_{\hbar,\varepsilon}(\widehat{\mathfrak{sl}}(n))$ to the universal enveloping algebra of the rectangular algebra $\mathcal{W}^k(\mathfrak{gl}(2n),(2^n))$ constructed by …

Guay's affine Yangians and non-rectangular $W$-algebras

Mamoru Ueda

We construct a non-trivial homomorphism from the Guay's affine Yangian to the universal enveloping algebra of non-rectangular $W$-algebras of type $A$. In order to construct the homomorphism, we extend the Guay's affine Yangian and its coproduct.