An Exploratory Clinical Study on the Safety and Efficacy of Autologous NK Cells in the Treatment of Pulmonary Nodules

Inclusion Criteria: 1. Subjects voluntarily sign the informed consent form, understand this clinical study, and are willing to follow and able to complete all trial procedures; 2. 18-70 years old, male or female; 3. Subjects with lung nodules confirmed by imaging examination must meet the following conditions: Multiple high-risk nodules have been surgically removed and confirmed to be malignant lesions, and the remaining high-risk nodules (refer to the standards in Appendix 12) cannot be surgically removed again, and are not suitable for other effective treatments or have failed other treatments; 4. If the subject is unable to complete the puncture or the puncture fails, the subject must be diagnosed as a malignant nodule through PET-CT imaging examination. Exclusion Criteria: 1. Subjects who are known to have allergic reactions, hypersensitivity reactions, intolerances or contraindications to any component of KN5001, or subjects with a history of severe allergic reactions; 2. Subjects with the following genetic syndromes: Fanconi syndrome, Kostmann syndrome, Shwachman syndrome or any known bone marrow failure syndrome; 3. Subjects with active or uncontrolled infections requiring parenteral antibiotics; Evidence of a serious active viral or bacterial infection or an uncontrolled systemic fungal infection; 4. Subjects with heart failure of grade III or IV according to the New York Heart Association (NYHA) cardiac function classification standard (see Appendix 1); 5. Subjects with a history of epilepsy or other central nervous system diseases; 6. Subjects with a history of malignant tumors, excluding patients with cured skin or cervical carcinoma in situ and patients with inactive tumors; 7. Subjects with a significant bleeding tendency, such as gastrointestinal bleeding, coagulopathy, hypersplenism, etc.; 8. Subjects with unstable angina, symptomatic congestive heart failure, or myocardial infarction in the past 6 months; 9. Females who are pregnant, lactating, or planning a pregnancy within six months; 10. Subjects who have received other clinical trial treatment within 3 months; 11. Any situation judged by the investigators that may increase the risk of the subjects or interfere with the clinical trial outcome.