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一、产品定位
核心特性
温和皂苷水佐剂为高纯度浓缩型皂苷佐剂,也可作为通用免疫增强剂,性状为淡黄色或琥珀色澄清透明液体,主要成分是高纯度免疫活性物,pH值为4.0~6.5。安全无毒可代谢,能够有效诱导机体免疫反应,对T细胞依赖性和非依赖性抗原均具有很强的免疫效果,粘膜免疫反应效果显著。
技术突破
1. 原料创新:通过原材料筛选,建立标准化原料分级体系,批间一致性CV值<3%。
2. 工艺升级:使用皂苷新技术路线,皂苷纯度更高,成本较进口产品降低50%。
二、技术参数
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三、作用机制
免疫激活双通路
1、固有免疫激活:
温和皂苷水佐剂提取自南美皂树 (Quillaja saponaria Molina)的水溶性皂苷成分,属于三萜皂苷类化合物,具有共同的三萜骨架结构。该皂苷能对T细胞依赖性与非依赖性抗原均产生强效佐剂效应,并可显著增强CD8+细胞毒性淋巴细胞反应,提升黏膜抗原免疫应答。
温和皂苷水佐剂能增强免疫器官中免疫细胞的分化和增殖能力,通过增加天然免疫细胞的数量,促进天然免疫细胞的分化和成熟,降低免疫抑制分子的表达,促进免疫效应细胞增殖,从而发挥其免疫增强效应。同时温和皂苷水佐剂与抗原通过胞吞作用方式进入抗原递呈细胞, 在温和皂苷水佐剂介导的内体膜破坏后,裂解的蛋白质抗原可以通过蛋白酶体机制在胞质溶胶中进一步加工成更小的肽片段。降解的肽通过转运蛋白分子易位到内质网中,在内质网中促进它们与新合成的MHC-I分子结合,从而通过高尔基体囊泡迁移到细胞表面。最后,与 MHC-I分子相关的暴露在DC (树突状细胞)表面上的肽表位通过T细胞受体呈递给幼稚的 CD8+T细胞 (交叉呈递)。提供共刺激信号,分泌细胞因子,引起免疫应答。
安全性优势
1. 低毒性设计:脱除高致敏原如多糖、多酚、单宁等杂质 (≥95%去除率)。
2. 大鼠,口服:LD50 口服> 5000 毫克/千克 (鼠) EPA IV级。
3. 大鼠,皮肤:LD50 皮肤>4000 毫克/千克 (大白鼠)
四、已验证应用场景
兽用疫苗
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宠物疫苗
1. 猫杯状病毒 (FCV):抗体阳性率从68%提升至94% (ELISA法)。
2. 犬细小病毒 (CPV):存活率提高40% (攻毒保护实验)。
五、质量优势与合规
质量控制体系
1、原料端:
(1) 重金属控制 (As≤2 ppm,Hg≤0.2 ppm,符合USP<232>)。
(2) 内毒素:≤5 EU/mg。
(3) 农药残留控制 (符合中国药典标准)。
2、生产端:
(1) 全流程可追溯 (批次记录关联原料来源、提取参数)。
(2) 配制工艺保留皂苷活性 (活性回收率>95%)。
六、推荐应用方案
适配疫苗类型
推荐用量:每毫升温和皂苷水佐剂含主要有效成分含量为1.0 mg/mL,根据疫苗免疫动物和免疫剂量推荐添加量如下:
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I. Product Positioning
Core Characteristics
Mild Saponin Aqueous Adjuvant is a highly purified, concentrated saponin adjuvant that can also serve as a universal immune enhancer. It appears as a pale yellow or amber clear transparent liquid, with highly purified immunologically active substances as the main component and a pH value of 4.0–6.5. It is safe, non-toxic and metabolizable, effectively induces immune responses in the body, exhibits strong immune effects against both T-cell-dependent and T-cell-independent antigens, and produces a remarkable mucosal immune response.
Technical Breakthroughs
1. Raw Material Innovation: Through raw material screening, a standardized raw material grading system has been established, with batch-to-batch consistency CV < 3%.
2. Process Upgrading: A new technical route for saponin production is adopted, resulting in higher saponin purity and a 50% cost reduction compared with imported products.
II. Technical Parameters
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III. Mechanism of Action
Dual Pathway Immune Activation
1. Innate Immune Activation
Mild Saponin Aqueous Adjuvant is derived from the water-soluble saponin fraction of Quillaja saponaria Molina, belonging to triterpenoid saponins with a common triterpene skeleton structure. It exerts potent adjuvant effects on both T-cell-dependent and T-cell-independent antigens, significantly enhances CD8⁺ cytotoxic lymphocyte responses, and boosts mucosal antigen immune responses.
Mild Saponin Aqueous Adjuvant enhances the differentiation and proliferation of immune cells in immune organs. By increasing the number of innate immune cells, promoting their differentiation and maturation, reducing the expression of immunosuppressive molecules, and stimulating the proliferation of immune effector cells, it exerts an immune-enhancing effect. Meanwhile, the adjuvant and antigen enter antigen-presenting cells via endocytosis. Following endosomal membrane disruption mediated by the adjuvant, the degraded protein antigens are further processed into smaller peptide fragments in the cytosol through the proteasome pathway. The degraded peptides are translocated into the endoplasmic reticulum via transporter molecules, where they facilitate binding to newly synthesized MHC class I molecules, which then migrate to the cell surface via Golgi vesicles. Finally, peptide epitopes associated with MHC class I molecules exposed on the surface of DCs (dendritic cells) are presented to naive CD8⁺ T cells via the T-cell receptor (cross-presentation), providing co-stimulatory signals, secreting cytokines, and triggering an immune response.
Safety Advantages
1. Low-Toxicity Design: Highly allergenic impurities such as polysaccharides, polyphenols and tannins are removed (removal rate ≥95%).
2. Acute oral toxicity in rats: LD₅₀ > 5000 mg/kg b.w., EPA Toxicity Category IV.
3. Acute dermal toxicity in rats: LD₅₀ > 4000 mg/kg b.w.
IV. Verified Application Scenarios
Veterinary Vaccines
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Pet Vaccines
1. Feline Calicivirus (FCV): Antibody positive rate increased from 68% to 94% (detected by ELISA).
2. Canine Parvovirus (CPV): Survival rate improved by 40% (challenge protection test).
V. Quality Advantages & Compliance
Quality Control System
1. Raw Material Stage
(1) Heavy metal control: As ≤ 2 ppm, Hg ≤ 0.2 ppm, complying with USP <232>.
(2) Endotoxin: ≤ 5 EU/mg.
(3) Pesticide residue control, complying with the standards of the Chinese Pharmacopoeia.
2. Production Stage
(1) Full-process traceability (batch records linked to raw material source and extraction parameters).
(2) Formulation process preserves saponin activity (activity recovery rate > 95%).
VI. Recommended Application Protocol
Compatible Vaccine Types
Recommended Dosage: The content of the main active ingredient in Mild Saponin Aqueous Adjuvant is 1.0 mg/mL. The recommended addition levels vary according to the vaccinated animals and immune dosage as follows:
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| 批号(Lot Number) | 证书类型 | 货号 |
|---|---|---|
| 分析证书 | S1520823 |