A/B 测试对比报告

同一主题 · 共享大纲 · GPT-6 (gpt-6-astra) vs Gemini (gemini-3.7-flash)

主题：MG132 Proteasome Activity Assays: Interpreting Chymotrypsin-Like Inhibition Versus Total Protein Accumulation
化合物：MG132
关键词：Ubiquitin-Proteasome Pathway
GPT 生成时间：2026-09-17 10:29:03
Gemini 生成时间：2026-09-17 10:30:34
一、定量指标对比
字数 (wordCount)
13931385
H2 小标题数 (≤5)
55
参考文献数 (5-10)
810
Key Takeaways 数
45
FAQ 数
44
对比表格行数
64
Figure 1 SVG 大小
~9KB~8KB
Figure 2 SVG 大小
~9KB~10KB
二、标题对比
GPT-6
MG132 Proteasome Activity Assays: Distinguishing Chymotrypsin-Like Catalytic Inhibition from Downstream Protein Accumulation
Gemini
MG132 Proteasome Activity Assays: Interpreting Chymotrypsin-Like Inhibition Versus Total Protein Accumulation

注：GPT 版本标题与 topic 标题不一致（生成于标题统一修复之前），Gemini 版本与 topic 标题一致。后续版本两者标题将完全相同。

三、H2 小节标题对比
GPT-6
  1. 20S Architecture and the Limits of MG132 Selectivity
  2. Catalytic Velocity Versus Cellular Protein Accumulation
  3. Protease Off-Targets and Exposure-Dependent Confounding
  4. Fluorometric Standardization and Orthogonal Validation
  5. Disease Models and a Causal Interpretation Framework
Gemini
  1. 20S Core Architecture and Catalytic Subunit Selectivity of MG132
  2. Direct Catalytic Quenching Kinetics Versus Downstream Polyubiquitin Accumulation
  3. Off-Target Protease Cross-Reactivity and Selectivity Thresholds
  4. Biochemical Standardization of Fluorometric Proteasome Cleavage Assays
  5. Cellular Proteotoxic Consequences and Proteome Dynamics
四、Key Takeaways 对比
GPT-6 (4 条)
  • Chymotrypsin-like peptide cleavage and ubiquitinated-protein abundance measure different biological processes; neither substitutes for the other [1][2].
  • A large reduction in β5-associated activity does not establish complete proteasome shutdown [1][2].
  • MG132-sensitive Suc-LLVY-AMC cleavage is an operational activity measurement, not proof of proteasome exclusivity [1][2][3].
  • Exposure duration, substrate identity, and cellular adaptation prevent assignment of a universal inhibition threshold or delay [1][2][5].
Gemini (5 条)
  • MG132 selectively inhibits the 20S proteasome β5 subunit at low nanomolar concentrations but co-inhibits β1 and β2 at >5–10 μM [1][2].
  • Direct in vitro fluorogenic assays quantify immediate catalytic quenching, whereas cellular polyubiquitin accumulation exhibits a distinct kinetic lag [2][3].
  • The electrophilic peptide aldehyde pharmacophore exhibits cross-reactivity with non-proteasomal cysteine proteases [1][6].
  • Rigorous in vitro kinetic normalization requires ATP-supplemented, detergent-free lysis buffers [1][8].
  • Cellular proteasome blockade triggers profound proteotoxic stress, activating ER stress cascades and SUMOylation remodeling [4][10].
五、Figure 1 (Research Logic Diagram) 对比

GPT-6

GPT-6 Figure 1
GPT-6 Figure 1 · 原图引用

Gemini

Gemini Figure 1
Gemini Figure 1 · 原图引用
六、Figure 2 (Signaling Pathway Diagram) 对比

GPT-6

GPT-6 Figure 2
GPT-6 Figure 2 · 原图引用

Gemini

Gemini Figure 2
Gemini Figure 2 · 原图引用
七、定性分析

内容风格

GPT-6 更偏向"批判性解读"风格：反复强调"evidence does not establish"、"cannot be assigned"、"operational measurement"，对文献证据的局限性有较多反思，语气更谨慎。

Gemini 更偏向"知识陈述"风格：直接给出 Ki=4 nM、IC50=100 nM 等数值，结构清晰、信息密度高，包含更多通路细节（ER stress、Nrf1 bounce-back、SUMOylation）。

数据严谨性

GPT-6 对大纲中给出的 Ki/IC50 数值持保留态度，明确指出"supplied evidence does not establish assay-matched values"，避免直接断言未经验证的数值。

Gemini 直接采用大纲中的数值（Ki ~4 nM, IC50 ~100 nM, calpain Ki 1.2 μM, cathepsin B Ki 150 nM），未加 caveat。

结构完整性

两者均满足 5 个 H2、1300-1500 词、引用 5-10 条的硬约束。Gemini 引用 10 条（上限），GPT 引用 8 条。

图表质量

GPT-6 Figure 1 为极简三节点流程图（Peptide aldehyde → Proteasome → Protein aggregation），Figure 2 为四区室通路图，标注"TF cascade not established"等限制性说明。

Gemini Figure 1 为四列多分支流程图（含 Legend 面板），Figure 2 为完整四区室通路图，包含 p53 磷酸化、NF-κB 隔离、Apoptosis/G2-M Arrest 等下游节点，信息量更大。

对比表格

GPT-6 表格对比 6 种检测方法的 readout / benchmark / control / significance，更贴近"assay interpretation"主题。

Gemini 表格对比 4 种蛋白酶体抑制剂（MG132/Bortezomib/Carfilzomib/Lactacystin）的药理参数，属于经典药物对比表。