Investigating the Effect of Intraperitoneal Administration of Exosome in Preventing Early Anastomotic Leakage in Rectal Cancer Patients Who Undergo Low Anterior Resection

The goal of this clinical trial is to assess the safety and efficacy of Human Placenta Mesenchymal Stem Cells Derived Exosomes in preventing early anastomosis leak in patients undergoing low anterior resection for rectal cancer. The main question it aims to answer are
Do Mesenchymal Stem Cell-Derived Exosomes prevent early anastomosis leak in patients undergoing low anterior resection for rectal cancer?
If there is a comparison group: Researchers will compare Mesenchymal Stem Cells Derived Exosomes to placebo to see if it can prevent early anastomotic leakage.
Participants will receive intraperitoneal Mesenchymal Stem Cells Derived Exosomes at the end of their surgery.

Start Date01 Aug 2024

Sponsor / Collaborator

Tehran University of Medical Sciences

NCT05808400 / RecruitingEarly Phase 1IIT

Clinical Study of the Safety and Efficacy of Umbilical Cord Mesenchymal Stem Cell Exosomes in Treating Chronic Cough After COVID-19 Infection

This clinical trial aims to evaluate the safety and effectiveness of umbilical cord mesenchymal stem cell (UCMSC)-derived extracellular vesicle nebulization inhalation therapy for the treatment of chronic cough after COVID-19 infection. The main objective is to assess whether UCMSC-derived exosome nebulization inhalation therapy alleviates chronic cough after COVID-19.
Participants will be asked to complete a questionnaire to help researchers evaluate their cough severity and to record their scores before nebulization inhalation of UCMSC-derived exosomes. Participants will receive either continuous nebulized inhalation of UCMSC-derived exosomes for 5 days, twice daily, or no treatment. Researchers will compare the experimental and control groups to evaluate the safety and efficacy of UCMSC-derived exosomes for the treatment of chronic cough after COVID-19 infection.

Start Date15 Feb 2023

Sponsor / Collaborator

Huazhong University of Science & Technology

NCT05669144 / RecruitingPhase 1/2IIT

Co-transplantation of Mesenchymal Stem Cell Derived Exosomes and Autologous Mitochondria for Patients Candidate for CABG Surgery With EF< 25% (Clinical Trial Phase ])

Heart failure (HF) and acute myocardial infarction that often follows are among the main causes of disability and death worldwide. As such, new treatments and biological drugs are needed to protect the heart against the harmful effects of ischemia and also reperfusion injury (IRI), preserve cardiac function, reduce the zone of myocardial infarction (MI), and improve patient outcomes. In this regard, it has been shown that mitochondrial dysfunction has a key role in the pathogenesis of heart ischemia, cardiomyopathy, and reperfusion injury. in this study which includes 4 groups of intervention, we try to minimize the damage by transplantation of mitochondria and administration of MSC-derived exosomes. MSC-derived exosomes limit inflammatory damage while fresh autologous exosomes limit oxidative stress.

Start Date20 Apr 2022

Sponsor / Collaborator

Tehran University of Medical Sciences

100 Clinical Results associated with MSC-derived exosomes(Tehran University of Medical Sciences)

100 Translational Medicine associated with MSC-derived exosomes(Tehran University of Medical Sciences)

100 Patents (Medical) associated with MSC-derived exosomes(Tehran University of Medical Sciences)

Literatures (Medical) associated with MSC-derived exosomes(Tehran University of Medical Sciences)

01 Aug 2024·Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica

[Preparation of hybrid exosomes based on bovine milk exosomes and liposomes and pharmacodynamic study of sinomenine loaded exosomes in treatment of rheumatoid arthritis].

Article

Author: Sun, Xin ; Yang, Jing ; He, Yu-Xin ; Wen, Wu-Long ; Wang, Rui ; Yu, Zhou-Bo ; Liu, Ming ; Ren, Peng-Fei ; Liang, Xiao ; Zhang, Wei-Ye

This study investigates the therapeutic effect of hybrid exosomes loaded with sinomenine(SIN) obtained by membrane fusion of milk exosomes with liposomes in collagen-induced arthritis(CIA) rats. Exosomes were isolated from fresh bovine milk by sucrose density gradient centrifugation, while liposomes were prepared using the emulsion solvent evaporation-low temperature curing method. Hybrid exosomes were characterized after membrane fusion through co-incubation: The morphology was detected by transmission electron microscopy, the particle size and potential by nanoparticle size potentiostat, and the expressions of surface characteristic proteins CD63 and TSG101 before and after fusion by Western blot(WB). The drug loading capacity and encapsulation rate of sinomenine were measured after the loading of sinomenine on exosomes by ultrasonic method. The CIA rat model was induced by collagen antibody. The efficacy experiment consisted of the control group, model group, SIN group, SIN-liposome group, SIN-milk exosome group, SIN-hybrid exosome group and positive drug(dexamethasone) group. The changes in body mass of rats during administration were recorded. Besides, the foot swelling, immune organ index, arthritis index, microcirculation index, synovial histopathology, and serum inflammatory factor levels detected by enzyme-linked immunosorbent assay were observed for pharmacodynamical study. Under transmission electron microscopy, both hybrid exosomes and milk exosomes showed saucer-like appearance. After co-incubation, the exosome particle size increased from(97.92±3.42)nm to(132.70±4.07)nm, and the Zeta potential changed from(-2.01±0.33)mV to(-17.90±2.13)mV. WB assay showed that CD63 and TSG101 proteins were normally expressed in milk exosomes and hybrid exosomes. The encapsulation rate of milk exosomes was 31.64%±2.48%, with a drug loading of 2.35%±0.52%, while the hybrid exosomes exhibited an encapsulation rate of 48.21%±3.12% and drug loading of 3.17%±0.36%, as determined by the microplate reader. Pharmacodynamic results showed that compared with the model group, the general condition, swelling degree of foot, arthritis index and immune organ index of all drug administration groups were significantly improved(P<0.05, P<0.01); microvascular comprehensive score and vascular resistance were significantly decreased(P<0.05, P<0.01); serum levels of TNF-α, IL-1β and IL-6 inflammatory factors were significantly decreased(P<0.01); and the lesions of synovial tissue were improved to some extent. Meanwhile, compared with the SIN group, SIN-liposome group and SIN-milk exosome group, the SIN-hybrid exosome group had a more stable and durable drug effect. The hybrid exosomes obtained by co-incubation of milk-derived exosomes with liposomes successfully improved the drug carrying capacity of exosomes and biocompatibility of liposomes. The hybrid exosomes loaded with sinomenine have good efficacy on CIA model rats, and can effectively solve the problems of TCM such as sinomenine, which have good efficacy but short biological half-life. The study provides new insights for the development of TCM and the treatment of diseases such as rheumatoid arthritis.

03 Jul 2024·Ultrastructural Pathology

The potential therapeutic effects of exosomes derived from bone marrow mesenchymal stem cells on ileum injury of a rat sepsis model (histological and immunohistochemical study)

Article

Author: Elnegris, Heba M. ; El-Roghy, Eman S. ; Abdelrahman, Abeer A.

Sepsis denotes a serious high mortality concern. The study was designed to evaluate the effect of mesenchymal stem cell exosomes (MSC-exosomes) on the evolution of the animal model of sepsis. In this study, 36 rats were distributed into three groups, (I) controls, (II) LPS-treated, and (III) LPS+MSC-EVs. Sepsis was simulated by administering E. coli-LPS to the laboratory animals. Group III was given MSC-exosomes four hours after the LPS injection. Forty-eight hours later rats were sacrificed. Ileum samples were excised, and processed for the histological assessment, immunohistochemical identification of CD44, and inducible nitric oxide synthase (iNOS). Ileum homogenate was used to estimate tumor necrosis factor α (TNF α) besides Cyclooxygenase-2 (COX 2). PCR was used for the detection of interleukin 1α (IL‑1α), and interleukin 17 (IL‑17). Statistical and morphometrical analysis was done. The LPS-treated group showed increased TNF-α, IL‑1α, IL‑17, and decreased COX 2. LPS administration led to cytoplasmic vacuolization of enterocytes, an increase in the vasculature, and cellular infiltrations invaded the lamina propria. There was a significant rise in goblet cells and the proportion of collagen fibers. Ultrastructurally, the enterocytes displayed nuclear irregularity, rough endoplasmic reticulum (rER) dilatation, and increased mitochondria number. Sepsis induces a significant increase in iNOS and a decrease in CD44 immune expressions. LPS+MSC-EVs group restored normal ileum structure and revealed a significant elevation in CD44 and a reduction in iNOS immunoreactions. LPS-sepsis induced an obvious ileum inflammatory deterioration ameliorated by MSC-exosomes, mostly through their antioxidant, anti-inflammatory, and anti-apoptotic properties.

01 Aug 2020·Arthroscopy: The Journal of Arthroscopic & Related SurgeryQ1 · MEDICINE

Intra-Articular Injections of Mesenchymal Stem Cell Exosomes and Hyaluronic Acid Improve Structural and Mechanical Properties of Repaired Cartilage in a Rabbit Model

Q1 · MEDICINE

Article

Author: Wong, Keng Lin ; Lai, Ruenn Chai ; Wang, Ming ; Lim, Sai Kiang ; Toh, Wei Seong ; Lee, Eng Hin ; Zhang, Shipin ; Ren, Xiafei ; Afizah, Hassan ; Hui, James Hoi Po

PURPOSETo compare the efficacy of mesenchymal stem cell (MSC) exosomes with hyaluronic acid (HA) against HA alone for functional cartilage regeneration in a rabbit osteochondral defect model.METHODSCritical-size osteochondral defects (4.5-mm diameter and 1.5-mm depth) were created on the trochlear grooves in the knees of 18 rabbits and were randomly allocated to 2 treatment groups: (1) exosomes and HA combination and (2) HA alone. Three 1-mL injections of either exosomes and HA or HA alone were administered intra-articularly immediately after surgery and thereafter at 7 and 14 days after surgery. At 6 and 12 weeks, gross evaluation, histologic and immunohistochemical analysis, and scoring were performed. The functional biomechanical competence of the repaired cartilage also was evaluated.RESULTSCompared with defects treated with HA, defects treated with exosomes and HA showed significant improvements in macroscopic scores (P = .032; P = .001) and histologic scores (P = .005; P < .001) at 6 and 12 weeks, respectively. Defects treated with exosomes and HA also demonstrated improvements in mechanical properties compared with HA-treated defects, with significantly greater Young's moduli (P < .05) and stiffness (P < .05) at 6 and 12 weeks. By 12 weeks, the newly-repaired tissues in defects treated with exosomes and HA composed mainly of hyaline cartilage that are mechanically and structurally superior to that of HA-treated defects and demonstrated mechanical properties that approximated that of adjacent native cartilage (P > .05). In contrast, HA-treated defects showed some repair at 6 weeks, but this was not sustained, as evidenced by significant deterioration of histologic scores (P = .002) and a plateau in mechanical properties from 6 to 12 weeks.CONCLUSIONSThis study shows that the combination of MSC exosomes and HA administered at a clinically acceptable frequency of 3 intra-articular injections can promote sustained and functional cartilage repair in a rabbit post-traumatic cartilage defect model, when compared with HA alone.CLINICAL RELEVANCEHuman MSC exosomes and HA administered in combination promote functional cartilage repair and may represent a promising cell-free therapy for cartilage repair in patients.

100 Deals associated with MSC-derived exosomes(Tehran University of Medical Sciences)

R&D Status

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Indication	Highest Phase	Country/Location	Organization	Date
Myocardial Infarction	Phase 2	IR	Tehran University of Medical Sciences	20 Apr 2022
Myocardial Stunning	Phase 2	IR	Tehran University of Medical Sciences	20 Apr 2022
Anastomotic Leaks	Phase 1	IR	Tehran University of Medical Sciences	01 Aug 2024
Rectal Cancer	Phase 1	IR	Tehran University of Medical Sciences	01 Aug 2024

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