Background
Methods
Animals
Primary cell isolation and culture
NK cell isolation and culture
Astrocyte isolation
Primary astrocyte isolation
Collection and characterization of exosomes
Exosome tracing in vivo and in vitro
Exosome tracing in vivo
Exosome tracing in vitro
Evaluation of the antidepressant activity of exosomes in vivo
Chronic mild stress (CMS) establishment and behavioral tests
Exosome treatment
Groups | Materials | Modes | Dosage | Frequency | Numbers |
---|---|---|---|---|---|
Stress | Normal saline | i.v. | 200 μL | One time | 5 |
Fluoxetine | Fluoxetine | i.g. | 10 mg/kg | Three times/week | 5 |
Exo (unstress) | Exosomes from NK cells of unstressed mice | i.v. | 66.42 μg | One time | 5 |
Exo (stress) | Exosomes from NK cells of stressed mice | i.v. | 66.42 μg | One time | 5 |
NK (unstress) | NK cells of unstressed mice | i.v. | 1 × 106 cells | One time | 5 |
Unstress | Normal saline | i.v. | 200 μL | One time | 5 |
MiR-207 depletion exosome treatment
Groups | Materials | Modes | Dosage | Frequency | Numbers |
---|---|---|---|---|---|
Stress | Normal saline | i.v. | 200 μL | One time | 5 |
Exo (inhibitor NC) | Exosomes from NK cells transfected with negative control inhibitor | i.v. | 66.42 μg | One time | 5 |
Exo (miR-207 inhibitor) | Exosomes from NK cells transfected with miR-207 inhibitor | i.v. | 66.42 μg | One time | 5 |
Unstress | Normal saline | i.v. | 200 μL | One time | 5 |
Evaluation of the antidepressant activity of miR-207 in vivo
Groups | Materials | Modes | Dosage | Frequency | Numbers |
---|---|---|---|---|---|
Stress | Normal saline | i.v. | 200 μL | One time | 6 |
miR-207 agomir | miR-207 agomir | Intracranial injection | 10 μL | One time | 6 |
Exosomes | Exosomes from unstressed mice | i.v. | 66.42 μg | One time | 6 |
Unstress | Normal saline | i.v. | 200 μL | One time | 6 |
Exosome treatment in vitro
MiRNA array analysis
Luciferase reporter assay
Enzyme-linked immunosorbent assay (ELISA)
Immunofluorescence and immunohistochemical staining
MiRNA mimic or inhibitor transfection
Western blot analysis
MiRNA and mRNA qPCR assays
MiRNA qPCR assay
mRNA qPCR assay
Type | Sequence (5′ to 3′) | Manufacturer |
---|---|---|
miR-207 primer | F 5′-TTTGCTTCTCCTGGCTCTCC-3′ R 5′-TATCCTTGTTCACGAGTCCTTCAC-3′ | GenePharma, Shanghai, China |
Tril primer | F 5′-CTATGTATGCCGTTGGGGTAGG-3′ F 5′-AGCTTTTCACTTATTTCGCCCAT-3′ | General Biosystems, Anhui, China |
GAPDH primer | F 5′-CACTGAGCATCTCCCTCACA-3′ R 5′-GATTGAGCCTGCTTCACCTC-3′ | General Biosystems, Anhui, China |
miR-207 mimic/agomir | Sense 5′-GCUUCUCCUGGCUCUCCUCCCUC-3′ Antisense 5′-GGGAGGAGAGCCAGGAGAAGCUU-3′ | GenePharma, Shanghai, China |
miR-207 mimic NC | Sense 5′-UUCUCCGAACGUGUCACGUTT-3′ Antisense 5′-ACGUGACACGUUCGGAGAATT-3′ | GenePharma, Shanghai, China |
miR-207 inhibitor | 5′-GAGGGAGGAGAGCCAGGAGAAGC-3′ | ABM, USA |
miR-207 inhibitor NC | 5′-CAGUACUUUUGUGUAGUACAA-3′ | ABM, USA |
U6 | F 5′-CAGCACATATACTAAAATTGGAACG-3′ R 5′-ACGAATTTGCGTGTCATCC-3′ | GenePharma, Shanghai, China |