Safety and Preliminary Efficacy of Allogeneic Endothelial Progenitor Cells (EPCs) in Patients With Acute Ischemic Stroke

Prior treatment

• History of previous intracranial hemorrhage (within 1 year), arteriovenous malformations, arterial entrapment, aneurysm (≥3 mm in maximum diameter), epilepsy, and history of brain tumor;

Other illness

• Disease progression or fluctuation in the subject after the first visit to the screening enrollment, which in the judgment of the investigator has a poor prognosis and will not benefit from this clinical study;
• Those who have bleeding conversion as assessed by imaging after thrombolysis and/or thrombolysis;

Lab values

• Abnormalities in major organ function
  • 7\. severe respiratory disease that, as assessed by the investigator, may have an impact on the subject's determination of test results (active tuberculosis, chronic obstructive pulmonary disease, interstitial lung disease, severe or critical pneumonia); 8. Uncontrolled hypertension (systolic blood pressure ≥180 mmHg or diastolic blood pressure ≥110 mmHg) after treatment, which in the judgment of the investigator carries a high risk of bleeding and has a poor prognosis; 9. Those with malignant tumors or a history of malignant tumors; 10. Have an autoimmune disease or are undergoing immunotherapy; 11. Being pregnant or breastfeeding; 12. Allergic to multiple drugs (≥2) or allergic to human albumin; 13. have been alcohol- or drug-dependent in the 6 months prior to the onset of illness or have had an episode of acute alcoholism in the 24 h prior to the onset of illness or have had an episode of Those with acute alcohol intoxication within 24 h; 14. History of psychiatric illness or severe cognitive impairment that may affect the evaluation of neurologic function; 15. Positive for Hepatitis B surface antigen, positive for Hepatitis C virus antibody, positive for syphilis serum antibody or positive for HIV antibody; 16. Being enrolled in a clinical study of another drug; 17. Patients who, in the opinion of the investigator, are not suitable for participation in this study.

Other

• Impaired consciousness (NIHSS score Ia ≥ 2);

• 1.Able to provide consent to study or consent is obtained from the patient's legal representative
• 2.Male or females,aged 18 to 80 years
• 3\. Subjects with acute ischemic stroke:1) Onset time ≤ 7 days; 2) Imaging confirmed infarction in the blood-supplying area of the internal carotid artery; 3) treated with thrombolysis and/or thrombolysis, or without the above treatment;
• 4.Subjects with NIHSS score between≥6 points and≤24 points at the time of screening
• 5.Eligible patients of childbearing potential(both men and women)if sexually active must agree to use a reliable method of contraception with their partners