SFL-CELL-02: Platelet Repair Decline as the Primary Pathogenic Mechanism of Systemic Lupus Erythematosus

Based on the cellular G₀ fixed framework defined in SFL-CELL-01, this paper systematically elaborates the original platelet dysfunction hypothesis of SLE, the starting core mechanism of the entire SFL theoretical system. The root lesion of systemic lupus erythematosus lies in the permanent ΔGd structural damage of hematopoietic stem cell G₀ architecture inside bone marrow, which forces the body to continuously produce platelets with defective vascular repair modules. Defective platelets cannot complete microvascular tissue repair effectively, leading to continuous unresolved microdamage across systemic tissues. Massive damaged cell fragments accumulate persistently, triggering long-term continuous immune clearance response, while autoantibody generation and chronic low-grade inflammation are merely secondary derived phenomena rather than primary pathogenic drivers. Unified system state equation consistent with all SFL serials G = G₀ + ΔGd(+) − ΔGd(−) Hematopoietic stem cells with intact G₀ structure maintain stable platelet production capacity, where ΔGd(+) only represents mild daily physiological wear that can be fully offset by regular metabolism. Once irreversible ΔGd(−) accumulates in the bone marrow stem cell core module, the structural baseline G of generated platelets drops permanently, forming a self-amplifying pathological cycle: insufficient tissue repair → rising cellular debris load → sustained immune overload → accelerated systemic cell structural loss. This paper reinterprets conventional autoimmune research frameworks without denying objective clinical markers such as autoantibodies, and unifies hematological indicators including MPV and PDW as direct observational evidence of bone marrow G₀ damage. Relevant clinical outcomes of mesenchymal stem cell and PRP targeted therapy further verify that restoring bone marrow G₀ integrity fundamentally eliminates the source of SLE persistent lesions, instead of merely suppressing secondary immune reactions. This pathogenic logic provides a standardized cellular G₀ analysis paradigm, which can be quantitatively measured through the lifespan model proposed in the subsequent SFL-LS serial.