Longyan Biotechnology (Shanghai) Co., Ltd.

Primary objective: To evaluate the dose tolerance and safety of single/multiple subcutaneous injections of different doses of LP-001 in healthy subjects; Secondary objectives: 1) To evaluate the pharmacokinetic characteristics of single/multiple injections of different doses of LP-001 injection in healthy subjects; 2) To evaluate the immunogenicity of single/multiple injections of different doses of LP-001 injection in healthy subjects; 3) To evaluate the pharmacodynamic characteristics of single/multiple injections of different doses of LP-001 injection in healthy subjects. Exploratory objectives and evaluation indicators: To explore and analyze the PK/PD correlation after single and multiple injections of different doses of LP-001 injection in healthy subjects.