Prolactinomas are commonly treated with dopamine receptor agonists (DAs), such as bromocriptine (BRC) and cabergoline (CAB). These findings highlight the role of p300 in regulating DRD2 transcription in DA-resistant prolactinomas. Combining Tan IIA with BRC may offer a promising strategy to overcome DA resistance.
The elevated expression level of GPX4 in oral cancer biopsies was also found to correlate with a poor prognosis. Together, these results provide evidence that TFP selectively induces GPX4-mediated, autophagy-dependent ferroptosis, thereby exerting anti-cancer effects against oral cancer and preventable death.
7 days ago
Journal
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GPX4 (Glutathione Peroxidase 4) • SLC7A11 (Solute Carrier Family 7 Member 11)
P1, N=12, Completed, Helsinki University Central Hospital | Recruiting --> Completed | Trial completion date: Dec 2024 --> Mar 2024 | Trial primary completion date: Dec 2024 --> Mar 2024
14 days ago
Trial completion • Trial completion date • Trial primary completion date
P2, N=705, Recruiting, Intra-Cellular Therapies, Inc. | Trial completion date: Jan 2027 --> Jun 2027 | Trial primary completion date: Dec 2026 --> Jun 2027
27 days ago
Trial completion date • Trial primary completion date
Based on a clinical staged small molecular hClpP activator ONC201, a class of novel hClpP agonists with a [1,8]naphthyridinone scaffold were designed, synthesized and evaluated in a series of biochemical and biological assays. Mechanism studies for the representative compound F20 indicated that it can potently bind to and activate hClpP, efficiently promote the degradation of hClpP substrates, robustly induce ATF4/CHOP regulated integrated stress responses, strongly inhibit cell growth and effectively induce apoptosis in a subset of cancer cell lines. F20 showed good PK profiles when dosed by intravenous injection and exhibited moderate oral bioavailability in mice.
The calmodulin-inhibitors trifluoperazine and ophiobolin A mediated delayed activation of ADAM10, which apparently did not depend on intracellular Ca2+ in the case of trifluoperazine...Finally, ADAM10 activation was observed after the entry of Ca2+ through certain channels, such as canonical members of transient receptor potential (TRP) channels. Therefore, the opening of particular channels for Ca2+ entry points and subsequent Ca2+ flux as well as the temporal aspects of the consequent increase in Ca2+ levels, must be considered for future therapeutic options involving the increasing or decreasing ADAM10 activity.
Importantly, B2R-D2R complexes were detected in human prolactinomas and nonfunctioning pituitary adenomas (NFPA), but not in mixed (prolactin + growth hormone) secreting adenomas. These results suggest that overexpression of B2R in resistant prolactinomas may promote the formation of B2R-D2R complexes, with B2R precluding D2R signaling, thus generating resistance to D2R agonists.
We verify the structure using mutagenesis and confirm that the conformation corresponds to the active state of the receptor. Subsequent study of TrkB interaction with the antidepressant drug fluoxetine, and the antipsychotic drug chlorpromazine, provides a clear self-consistent model, describing the mechanism by which fluoxetine activates the receptor by binding to its transmembrane domain.
2 months ago
Journal
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NTRK2 (Neurotrophic tyrosine kinase, receptor, type 2)
ARI de-sensitizes Fao cells to stress signaling, while OLA has the opposite effect. These findings contribute to our understanding of the metabolic risks associated with prolonged AAP use and may inform future therapeutic strategies.
2 months ago
Journal
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STAT3 (Signal Transducer And Activator Of Transcription 3)
Our results indicate that serum IL-2, IL-8, IL-10, and TNF-α levels may be involved in the pathophysiological mechanisms of schizophrenia and correlate with the effects of olanzapine.
Previous studies have shown that chlorpromazine (CPZ) can inhibit YAP1 expression...Collectively, our findings indicate that FOXP3 competitively binds TEAD4 to regulate YAP1 localization in the nucleus and cytoplasm to suppress NPC progression. Consequently, FOXP3 may be a prognostic indicator for HNSCC.
Cabergoline has a stronger affinity for the D2R receptor and longer half-life than L-Dopa, leading to lactotroph apoptosis, tumor shrinkage, and rapid and maintained normalization of PRL levels, with a better side-effect profile. Patients with DHPR deficiency need to be actively monitored for symptomatic hyperprolactinemia, as L-Dopa monotherapy is insufficient to suppress PRL secretion, leading to lactotroph hypertrophy and proliferation over time and development of prolactinomas in later life.