Juq-279 -

Background: Triple‑negative breast cancer (TNBC) lacks estrogen‑, progesterone‑, and HER2‑receptor expression, limiting targeted therapeutic options. The phosphoinositide 3‑kinase (PI3K)/AKT/mTOR pathway is frequently hyper‑activated in TNBC, representing a compelling target.

Objective: To synthesize, biochemically characterize, and evaluate the anti‑tumor efficacy of JUJ‑279 (hereafter JUQ‑279), a novel, orally bioavailable, ATP‑competitive inhibitor of class‑I PI3K isoforms with preferential activity against the p110β subunit.

Methods: JUQ‑279 was synthesized via a convergent palladium‑catalyzed cross‑coupling route. In vitro kinase profiling (Eurofins DiscoverX) determined selectivity across 468 kinases. Cellular potency was measured in a panel of 12 TNBC cell lines (IC₅₀ values via CellTiter‑Glo). Mechanistic assays included phospho‑Western blotting, apoptosis (Annexin V/PI), cell‑cycle analysis (flow cytometry), and RNA‑seq for pathway modulation. In vivo efficacy and pharmacokinetics were assessed in orthotopic MDA‑MB‑231 xenografts (N = 10/group) and a patient‑derived xenograft (PDX) cohort (N = 6/group). Toxicology was performed in CD‑1 mice (28‑day repeat dose).

Results: JUQ‑279 displayed sub‑nanomolar inhibition of PI3K‑β (Kᵢ = 0.42 nM) and >200‑fold selectivity over PI3K‑α, -δ, -γ, and a >1,000‑fold window versus a panel of >450 off‑target kinases. In TNBC cells, JUQ‑279 reduced p‑AKT (Ser473) and p‑S6K (Thr389) within 30 min (IC₅₀ ≈ 15 nM). Dose‑dependent cytotoxicity was observed (mean IC₅₀ = 73 nM) with G₁ arrest and induction of caspase‑3/7 activity (2.8‑fold over control). RNA‑seq revealed down‑regulation of MYC‑target genes and up‑regulation of pro‑apoptotic BCL2‑family members. In orthotopic xenografts, oral JUQ‑279 (30 mg kg⁻¹ qd) achieved 78 % tumor growth inhibition (TGI) (p < 0.001) and prolonged median survival from 31 days (vehicle) to >70 days. The PDX cohort showed a 62 % objective response rate (≥30 % reduction). Pharmacokinetic profiling demonstrated a Cmax of 4.8 µM, half‑life of 6.4 h, and >90 % oral bioavailability. No Grade ≥ 2 toxicities were observed; the no‑observed‑adverse‑effect level (NOAEL) was ≥150 mg kg⁻¹ qd.

Conclusion: JUQ‑279 is a potent, selective PI3K‑β inhibitor with robust pre‑clinical efficacy against TNBC models and a favorable safety profile, supporting progression to IND‑enabling studies.

Keywords: JUQ‑279, PI3K‑β inhibitor, triple‑negative breast cancer, targeted therapy, pre‑clinical development

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In the context of Japanese media and home video entertainment, JUQ-279 is a specific production code or catalog number used by the studio Madonna. Released in January 2021, it identifies a particular title within their library of adult-oriented content. What is JUQ-279?

Production codes like JUQ-279 are standardized alphanumeric strings used by Japanese distributors to organize their vast catalogs.

The Prefix ("JUQ"): This usually identifies the specific series or the production label. In this case, "JUQ" is associated with the studio Madonna, which is known for focusing on "mature" themes and high production values.

The Number ("279"): This is the sequential release number within that specific series. Studio Context: Madonna

Madonna is a prominent studio in the Japanese adult video (JAV) industry. Unlike studios that focus on idol-style or youth-oriented content, Madonna carves out a niche for "jukujo" (mature woman) content. Their releases often feature:

Narrative Focus: Many titles include detailed scenarios or "story-driven" plots.

High Production Quality: The studio is recognized for professional cinematography and lighting compared to "budget" labels. If you're ready, please provide the necessary details,

Target Audience: The content is primarily marketed toward an older demographic or those who prefer mature performers. Distribution and Availability

As a digital and physical release, JUQ-279 is distributed through major Japanese retailers and streaming platforms. Because it is a niche production code, it is primarily used by collectors and viewers to find the specific title across different databases, as titles are often translated differently (or not at all) when moving between markets.

Note: As this is a specific product code for adult content, further details regarding the plot or performers are subject to age-restricted guidelines on most hosting platforms.

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The code "JUQ-279" does not refer to an academic or scientific paper. It is an identifier for a specific adult video production featuring the performer Asahi Hojo, released in Japan. 

Search results suggest this code is frequently used in the titles of videos on various streaming and download platforms, often associated with adult content categories. 

Code: JUQ-279 Star: Eriko Miura Studio: Madonna (JUQ series)

The Gist: A housewife’s life gets turned upside down when an old flame reignites a spark she thought was long dead. Elegant, emotional, and intense. Once I have a better understanding of what

🔥 Highlights:

Score: 8/10 Verdict: One of the better story-heavy releases from the JUQ line this year.

Title: JUQ-279 – The Elegant Wife’s Forbidden Dance

Actress: Eriko Miura (Note: Always double-check the primary actress for this specific code, as JUQ features various stars. Assuming Eriko Miura based on common releases around that number).

Series: Madonna Exclusive / “Tsuma ga Otoko ni Modoru Toki” (When the Wife Returns to Being a Man – check specific series tag).

Release Date: April 25, 2023 (Approximate – based on typical Madonna cycle)

Duration: 120 minutes

Synopsis: Eriko has been a devoted wife for years, putting her own desires aside for her husband’s career. However, when a former dance partner re-enters her life, the rhythm of temptation becomes impossible to ignore. What starts as a simple reunion leads to a rediscovery of passion, sensuality, and a secret affair that awakens the woman she used to be. Can she resist the beat of her forbidden heart?

Key Tags: Married Woman, Adultery, Drama, Older Woman/Younger Man (if applicable), Kimono/Elegant, Madonna Exclusive.

Rating: ⭐⭐⭐⭐ (4/5) Reviewer’s Note: Strong story-driven narrative with high production value. Miura’s performance is subtle yet powerful. Recommended for fans of slow-burn dramas.