Role of phosphoinositide 3-kinase in innate immunity

K Hazeki, K Nigorikawa, O Hazeki - Biological and Pharmaceutical …, 2007 - jstage.jst.go.jp
Recent advances in our understanding of the molecular basis of mammalian host immune
responses to microbial invasion suggest that the first line of defense against microbes is the …

Cas9‐Geminin and Cdt1‐fused anti‐CRISPR protein synergistically increase editing accuracy

…, K Kishi, E Matsugi, Y Inoue, K Nigorikawa… - FEBS …, 2023 - Wiley Online Library
Genome editing with CRISPR‐Cas9, particularly for therapeutic purposes, should be
accomplished via the homology‐directed repair (HDR) pathway, which exhibits greater precision …

PIKfyve accelerates phagosome acidification through activation of TRPML1 while arrests aberrant vacuolation independent of the Ca2+ channel

Y Isobe, K Nigorikawa, G Tsurumi… - The journal of …, 2019 - academic.oup.com
PIKfyve phosphorylates PtdIns(3)P to PtdIns(3, 5)P 2 . One of the best characterized effector
downstream of PtdIns(3, 5)P 2 is a lysosomal Ca 2+ channel, TRPML1. Although it has been …

Specific role of phosphoinositide 3-kinase p110α in the regulation of phagocytosis and pinocytosis in macrophages

…, Y Takaba, Y Ishikawa, K Nigorikawa… - Biochemical …, 2009 - portlandpress.com
PI3K (phosphoinositide 3-kinase) α has been implicated in phagocytosis and fluid-phase
pinocytosis in macrophages. The subtype-specific role of PI3K in these processes is poorly …

Opposite effects of wortmannin and 2-(4-morpholinyl)-8-phenyl-1 (4H)-benzopyran-4-one hydrochloride on Toll-like receptor-mediated nitric oxide production …

K Hazeki, S Kinoshita, T Matsumura, K Nigorikawa… - Molecular …, 2006 - ASPET
A number of previous studies have suggested the involvement of phosphoinositide 3-kinase
(PI3K) in Toll-like receptor (TLR) signaling. However, there have also been a number of …

Critical roles of the p110β subtype of phosphoinositide 3-kinase in lipopolysaccharide-induced Akt activation and negative regulation of nitrite production in RAW …

…, K Hazeki, M Hoshi, K Nigorikawa… - The Journal of …, 2008 - journals.aai.org
It has been suggested that PI3K participates in TLR signaling. However, identifying specific
roles for individual PI3K subtypes in signaling has remained elusive. In macrophages from …

Protein kinase Cδ binds TIRAP/Mal to participate in TLR signaling

…, N Sukenobu, K Yoshikawa, K Nigorikawa… - Molecular …, 2007 - Elsevier
Toll-like receptor (TLR) family members recognize specific molecular patterns within
pathogens. Signaling through TLRs results in a proximal event that involves direct binding of …

A naphthoquinone derivative, shikonin, has insulin-like actions by inhibiting both phosphatase and tensin homolog deleted on chromosome 10 and tyrosine …

K Nigorikawa, K Yoshikawa, T Sasaki, E Iida… - Molecular …, 2006 - ASPET
The 1,4-naphthoquinone derivative, shikonin, has been shown to increase glucose uptake by
adipocytes and myocytes with minor effects on protein tyrosine phosphorylation in the cells …

Phosphorylation of TMEM55B by Erk/MAPK regulates lysosomal positioning

S Takemasu, K Nigorikawa, M Yamada… - The journal of …, 2019 - academic.oup.com
TMEM55B is first identified as phosphatidylinositol-4,5-P 2 4-phosphatases (PtdIns-4,5-P 2 4-phosphatases)
that catalyse dephosphorylation of PtdIns-4,5-P 2 to PtdIns-5-P. We …

IRAK-4-dependent degradation of IRAK-1 is a negative feedback signal for TLR-mediated NF-κB activation

M Kubo-Murai, K Hazeki, K Nigorikawa… - Journal of …, 2008 - academic.oup.com
The activation of interleukin 1 receptor-associated kinase (IRAK)-1 is a key event in the
transmission of signals from Toll-like receptors (TLRs). The catalytic activity of the protein kinase …