Name: Three-Dimensional, Serum-Free Culture System for Lacrimal Gland Stem Cells (Video) | JoVE Journal
Uploaded: 2022-06-02T13:00:00.000+00:00
Duration: 7 min 49 s
Description: Learn a serum-free culture method for lacrimal gland stem cells using BALB/c mice. This protocol enables long-term expansion and differentiation into acinar and ductal-like cells for tissue regeneration.

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5 minutes

This work was supported by a grant from the National Natural Science Foundation of China (No. 31871413) and two Programs of Guangdong Science and Technology (2017B020230002 and 2016B030231001). We are truly grateful to the researchers who have helped us during the study and to the staff members working in the animal center for their support in animal care.

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The authors declare that they have no competing interests.

There are well-established methods for the isolation and in vitro culture of lacrimal stem cells for lacrimal stem cell culture and LG injury repair. Shatos et al.17 and Ackermannet al.6 successfully cultured and subcultured lacrimal stem cells of rats and mice by 2D culture methods, respectively, making it possible to transplant lacrimal stem cells for the treatment of ADDED. Studies on stem cells18 and mesenchymal stem cells<sup c...

Lacrimal gland stem cells (LGSCs) maintain lacrimal gland (LG) cell renewal and are the source of acinar and ductal cells. Therefore, LGSC transplantation is considered an alternative approach for treating severe inflammatory damage and aqueous-deficient dry eye disease (ADDED)1,2,3. Several culture methods have been applied to enrich LGSCs. Tiwari et al. separated and cultured primary LG cells using collagen I and matrix gel supplemented with several growth factors; however, the LG cells could not be continuously cultured4. Using two-dimensional (2D) culture, mouse LG-derived stem cells were isolated by You et al.5 and Ackermann et al.6, found to express the stem/progenitor cell marker genes, Oct4, Sox2, Nanog, and nestin, and could be subcultured. However, there is no clear indication that these cells can differentiate into acinar or ductal cells, and there is no transplantation experiment to verify the differentiation potential in vivo.
Recently, c-kit+ dim/EpCAM+/Sca1-/CD34-/CD45- cells were isolated from mouse LGs by flow cytometry, found to express LG progenitor cell markers, such as Pax6 and Runx1, and differentiated into ducts and acini in vitro. In mice with ADDED, orthotopic injection with these cells could repair damaged LGs and restore the secretory function of LGs2. However, the number of stem cells isolated by this method was small, and there are no suitable culture conditions for expanding the isolated LGSCs. In summary, an appropriate culture system needs to be established to effectively isolate and culture adult LGSCs with stable and continuous expansion for the study of LGSCs in the treatment of ADDED.
Organoids derived from stem cells or pluripotent stem cells are a group of cells that are histologically similar to the related organs and can maintain their own renewal. After the mouse intestine organoid was successfully cultured by Sato et al. in 20097, organoids from other organs were cultured in succession, based on Sato&#39;s culture system, such as gallbladder8, liver9, pancreas10, stomach11, breast12, lung13, prostate14, and salivary gland15. Due to the high proportion of adult stem cells before cell differentiation in organoid culture, the three-dimensional (3D) organoid culture method is considered optimal for the isolation and culture of adult stem cells of LG.
An adult mouse LGSC culture system was established in the present study by optimizing the 3D, serum-free culture method. It is proven that the LGSCs cultured from both normal and ADDED mice showed a stable capacity of self-renewal and proliferation. After transplantation into the ADDED mouse LGs, LGSCs colonized the impaired LGs and improved tear production. In addition, red fluorescent LGSCs were isolated from ROSA26mT/mG mice and cultured. This work provides a reliable reference for LGSC enrichment in vitro and LGSC autograft in clinical application for ADDED therapy.

<table><tbody><tr><td>&lt;u&gt;&lt;em&gt;Animal(Mouse)&lt;/em&gt;&lt;/u&gt;</td><td></td><td></td><td></td></tr><tr><td>Bal B/C</td><td>Model Animal Research Center of Nanjing University</td><td></td><td></td></tr><tr><td>C57 BL/6J</td><td>Laboratory Animal Center of Sun Yat-sen University</td><td></td><td></td></tr><tr><td>NOD/ShiLtJ</td><td>Model Animal Research Center of Nanjing University</td><td></td><td></td></tr><tr><td>ROSA26&lt;sup&gt;mT/mG&lt;/sup&gt;</td><td>Model Animal Research Center of Nanjing University</td><td></td><td></td></tr><tr><td>&lt;u&gt;&lt;em&gt;Equipment&lt;/em&gt;&lt;/u&gt;</td><td></td><td></td><td></td></tr><tr><td>Analytical balance</td><td>Sartorius</td><td></td><td></td></tr><tr><td>Automatic dehydrator</td><td>Thermo</td><td></td><td></td></tr><tr><td>Blood counting chamber</td><td>BLAU</td><td></td><td></td></tr><tr><td>Cell Counter</td><td>CountStar</td><td></td><td></td></tr><tr><td>CO&lt;sub&gt;2&lt;/sub&gt; constant temperature incubator</td><td>Thermo</td><td></td><td></td></tr><tr><td>ECL Gel imaging system</td><td>GE healthcare</td><td></td><td></td></tr><tr><td>Electric bath for water bath</td><td>Yiheng Technology</td><td></td><td></td></tr><tr><td>Electrophoresis apparatus</td><td>BioRad</td><td></td><td></td></tr><tr><td>Fluorescence quantitative PCR instrument</td><td>Roche</td><td></td><td></td></tr><tr><td>Frozen tissue slicer</td><td>Lecia</td><td></td><td></td></tr><tr><td>Horizontal centrifuge</td><td>CENCE</td><td></td><td></td></tr><tr><td>Inverted fluorescence microscope</td><td>Nikon</td><td></td><td></td></tr><tr><td>Inverted microscope</td><td>Olympus</td><td></td><td></td></tr><tr><td>Laser lamellar scanning micrograph</td><td>Carl Zeiss</td><td></td><td></td></tr><tr><td>Liquid nitrogen container</td><td>Thermo</td><td></td><td></td></tr><tr><td>Low temperature high speed centrifuge</td><td>Eppendorf</td><td></td><td></td></tr><tr><td>Micropipettor</td><td>Gilson</td><td></td><td></td></tr><tr><td>Microwave oven</td><td>Panasonic</td><td></td><td></td></tr><tr><td>Nanodrop ultraviolet spectrophotometer</td><td>Thermo</td><td>measure RNA concentration</td><td></td></tr><tr><td>Paraffin slicing machine</td><td>Thermo</td><td></td><td></td></tr><tr><td>PCR Amplifier</td><td>Eppendorf</td><td></td><td></td></tr><tr><td>pH value tester</td><td>Sartorius</td><td></td><td></td></tr><tr><td>4 &amp;deg;C Refrigerator</td><td>Haier</td><td></td><td></td></tr><tr><td>Thermostatic culture oscillator</td><td>ZHICHENG</td><td></td><td></td></tr><tr><td>Tissue paraffin embedding instrument</td><td>Thermo</td><td></td><td></td></tr><tr><td>&amp;nbsp;-80&amp;deg;C Ultra-low temperature refrigerator</td><td>Thermo</td><td></td><td></td></tr><tr><td>&amp;nbsp;-20&amp;deg;C Ultra-low temperature refrigerator</td><td>Thermo</td><td></td><td></td></tr><tr><td>Ultra pure water purification system</td><td>ELGA</td><td></td><td></td></tr><tr><td>&lt;u&gt;&lt;em&gt;Reagent&lt;/em&gt;&lt;/u&gt;</td><td></td><td></td><td></td></tr><tr><td>&lt;strong&gt;Animal Experiment&lt;/strong&gt;</td><td></td><td></td><td></td></tr><tr><td>HCG</td><td>Sigma</td><td>9002-61-3</td><td></td></tr><tr><td>PMSG</td><td>Sigma</td><td>14158-65-7</td><td></td></tr><tr><td>Pentobarbital Sodium</td><td>Sigma</td><td>57-33-0</td><td></td></tr><tr><td>&lt;strong&gt;Cell Culture&lt;/strong&gt;</td><td></td><td></td><td></td></tr><tr><td>B27</td><td>Gibco</td><td>17504044</td><td></td></tr><tr><td>Collagenase I</td><td>Gibco</td><td>17018029</td><td></td></tr><tr><td>Dispase</td><td>BD</td><td>354235</td><td></td></tr><tr><td>DMEM</td><td>Sigma</td><td>D6429</td><td></td></tr><tr><td>DMEM/F12</td><td>Sigma</td><td>D0697</td><td></td></tr><tr><td>DMSO</td><td>Sigma</td><td>67-68-5</td><td></td></tr><tr><td>EDTA</td><td>Sangon Biotech</td><td>A500895</td><td></td></tr><tr><td>Foetal Bovine Serum</td><td>Gibco</td><td>04-001-1ACS</td><td></td></tr><tr><td>GlutaMax</td><td>Gibco</td><td>35050087</td><td></td></tr><tr><td>Human FGF10</td><td>PeproTech</td><td>100-26</td><td></td></tr><tr><td>Matrigel (Matrix gel)</td><td>BD</td><td>356231</td><td></td></tr><tr><td>Murine Noggin</td><td>PeproTech</td><td>250-38</td><td></td></tr><tr><td>Murine Wnt3A</td><td>PeproTech</td><td>315-20</td><td></td></tr><tr><td>Murine EGF</td><td>PeproTech</td><td>315-09</td><td></td></tr><tr><td>NEAA</td><td>Gibco</td><td>11140050</td><td></td></tr><tr><td>N2</td><td>Gibco</td><td>17502048</td><td></td></tr><tr><td>R-spondin 1</td><td>PeproTech</td><td>120-38</td><td></td></tr><tr><td>Trypsin Inhibitor (TI)</td><td>Sigma</td><td>T6522</td><td>Derived from &lt;em&gt;Glycine max&lt;/em&gt;; can inhibit trypsin, chymotrypsin, and plasminase to a lesser extent. One mg will inhibit 1.0-3.0 mg of trypsin.</td></tr><tr><td>Trypsin</td><td>Sigma</td><td>&amp;nbsp;T4799</td><td></td></tr><tr><td>Y-27632</td><td>Selleck</td><td>S1049</td><td></td></tr><tr><td>&lt;strong&gt;HE staining &amp;amp; Immunostaining&lt;/strong&gt;</td><td></td><td></td><td></td></tr><tr><td>Alexa Fluor 488 donkey anti-Mouse IgG</td><td>Thermo</td><td>A-21202</td><td>Used dilution: IHC) 2 &amp;mu;g/mL, (IF) 0.2 &amp;mu;g/mL</td></tr><tr><td>Alexa Fluor 488 donkey anti-Rabbit IgG</td><td>Thermo</td><td>A-21206</td><td>Used dilution: (IHC) 2 &amp;mu;g/mL, (IF) 2 &amp;mu;g/mL</td></tr><tr><td>Alexa Fluor 568 donkey anti-Mouse IgG</td><td>Thermo</td><td>A-10037</td><td>Used dilution: (IHC) 2 &amp;mu;g/mL, (IF) 2 &amp;mu;g/mL</td></tr><tr><td>Alexa Fluor 568 donkey anti-Rabbit IgG</td><td>Thermo</td><td>A-10042</td><td>Used dilution: (IHC) 2 &amp;mu;g/mL, (IF) 4 &amp;mu;g/mL</td></tr><tr><td>Anti-AQP5 rabbit antibody</td><td>Abcam</td><td>ab104751</td><td>Used dilution: (IHC) 1 &amp;mu;g/mL, (IF) 0.1 &amp;mu;g/mL</td></tr><tr><td>Anti-E-cadherin Rat antibody</td><td>Abcam</td><td>ab11512</td><td>Used dilution: (IF)&amp;nbsp; 5 &amp;mu;g/mL</td></tr><tr><td>Anti-Keratin14 rabbit antibody</td><td>Abcam</td><td>ab181595</td><td>Used dilution: (IHC) 1 &amp;mu;g/mL, (IF) 2 &amp;mu;g/mL</td></tr><tr><td>Anti-Ki67 rabbit antibody</td><td>Abcam</td><td>ab15580</td><td>Used dilution: (IHC) 1 &amp;mu;g/mL, (IF) 1 &amp;mu;g/mL</td></tr><tr><td>Anti-mCherry mouse antibody</td><td>Abcam</td><td>ab125096</td><td>Used dilution: (IHC) 2 &amp;mu;g/mL, (IF) 2 &amp;mu;g/mL</td></tr><tr><td>Anti-mCherry rabbit antibody</td><td>Abcam</td><td>ab167453</td><td>Used dilution: (IF)&amp;nbsp; 2 &amp;mu;g/mL</td></tr><tr><td>C&lt;sub&gt;6&lt;/sub&gt;H&lt;sub&gt;8&lt;/sub&gt;O&lt;sub&gt;7&lt;/sub&gt;</td><td>Sangon Biotech</td><td>A501702-0500</td><td></td></tr><tr><td>Citric Acid</td><td>Sangon Biotech</td><td>201-069-1</td><td></td></tr><tr><td>DAB Kit (20x)</td><td>CWBIO</td><td>CW0125</td><td></td></tr><tr><td>DAPI</td><td>Thermo</td><td>62248</td><td></td></tr><tr><td>Eosin</td><td>BASO</td><td>68115</td><td></td></tr><tr><td>Fluorescent Mounting Medium</td><td>Dako</td><td>S3023</td><td></td></tr><tr><td>Formalin</td><td>Sangon Biotech</td><td>A501912-0500</td><td></td></tr><tr><td>Goat anti-Mouse IgG antibody (HRP)</td><td>Abcam</td><td>ab6789</td><td>Used dilution: 2 &amp;mu;g/mL</td></tr><tr><td>Goat anti-Rabbit IgG antibody(HRP)</td><td>Abcam</td><td>ab6721</td><td>Used dilution: 2 &amp;mu;g/mL</td></tr><tr><td>Hematoxylin</td><td>BASO</td><td>517-28-2</td><td></td></tr><tr><td>Histogel (Embedding hydrogel)</td><td>Thermo</td><td>HG-400-012</td><td></td></tr><tr><td>30% H&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;2&lt;/sub&gt;</td><td>Guangzhou Chemistry</td><td>KD10</td><td></td></tr><tr><td>30% Hydrogen Peroxide Solution</td><td>Guangzhou Chemistry</td><td>7722-84-1</td><td></td></tr><tr><td>Methanol</td><td>Guangzhou Chemistry</td><td>67-56-1</td><td></td></tr><tr><td>Na&lt;sub&gt;3&lt;/sub&gt;C&lt;sub&gt;6&lt;/sub&gt;H&lt;sub&gt;5&lt;/sub&gt;O&lt;sub&gt;7&lt;/sub&gt;.2H&lt;sub&gt;2&lt;/sub&gt;O</td><td>Sangon Biotech</td><td>A501293-0500</td><td></td></tr><tr><td>Neutral balsam</td><td>SHANGHAI YIYANG</td><td>YY-Neutral balsam</td><td></td></tr><tr><td>Non-immunized Goat Serum</td><td>BOSTER</td><td>AR0009</td><td></td></tr><tr><td>Paraffin</td><td>Sangon Biotech</td><td>A601891-0500</td><td></td></tr><tr><td>Paraformaldehyde</td><td>DAMAO</td><td>200-001-8</td><td></td></tr><tr><td>Saccharose</td><td>Guangzhou Chemistry</td><td>57-50-1</td><td></td></tr><tr><td>Sodium citrate tribasic dihydrate</td><td>Sangon Biotech</td><td>200-675-3</td><td></td></tr><tr><td>Sucrose</td><td>Guangzhou Chemistry</td><td>IB11-AR-500G</td><td></td></tr><tr><td>Tissue-Tek O.T.C. Compound</td><td>SAKURA</td><td>SAKURA.4583</td><td></td></tr><tr><td>Triton X-100</td><td>DINGGUO</td><td>9002-93-1</td><td></td></tr><tr><td>Xylene</td><td>Guangzhou Chemistry</td><td>128686-03-3</td><td></td></tr><tr><td>&lt;strong&gt;RT-PCR &amp;amp; qRT-PCR&lt;/strong&gt;</td><td></td><td></td><td></td></tr><tr><td>Agarose</td><td>Sigma</td><td>9012-36-6</td><td></td></tr><tr><td>Alcohol</td><td>Guangzhou Chemistry</td><td>64-17-5</td><td></td></tr><tr><td>Chloroform</td><td>Guangzhou Chemistry</td><td>865-49-6</td><td></td></tr><tr><td>Ethidium Bromide</td><td>Sangon Biotech</td><td>214-984-6</td><td></td></tr><tr><td>Isopropyl Alcohol</td><td>Guangzhou Chemistry</td><td>67-63-0</td><td></td></tr><tr><td>LightCycler 480 SYBR Green I Master Mix</td><td>Roche</td><td>488735200H</td><td></td></tr><tr><td>ReverTra Ace qPCR RT Master Mix</td><td>TOYOBO</td><td>-</td><td></td></tr><tr><td>Taq DNA Polymerase</td><td>TAKARA</td><td>R10T1</td><td></td></tr><tr><td>Goldview (nucleic acid stain)</td><td>BioSharp</td><td>BS357A</td><td></td></tr><tr><td>TRIzol</td><td>Magen</td><td>R4801-02</td><td></td></tr><tr><td>&lt;strong&gt;Vector Construction &amp;amp; Cell Transfection&lt;/strong&gt;</td><td></td><td></td><td></td></tr><tr><td>Agar</td><td>OXID</td><td>-</td><td></td></tr><tr><td>Ampicillin</td><td>Sigma</td><td>69-52-3</td><td></td></tr><tr><td>Chloramphenicol</td><td>Sigma</td><td>56-75-7</td><td></td></tr><tr><td>Endotoxin-free Plasmid Extraction Kit</td><td>Thermo</td><td>A36227</td><td></td></tr><tr><td>Kanamycin</td><td>Sigma</td><td>25389-94-0</td><td></td></tr><tr><td>Lipo3000 Plasmid Transfection Kit</td><td>Thermo</td><td>L3000015</td><td></td></tr><tr><td>LR Reaction Kit</td><td>Thermo</td><td>11791019</td><td></td></tr><tr><td>Plasmid Extraction Kit</td><td>TIANGEN</td><td>DP103</td><td></td></tr><tr><td>Trans5&amp;alpha; Chemically Competent Cell</td><td>TRANSGEN</td><td>CD201-01</td><td></td></tr><tr><td>Trytone</td><td>OXID</td><td>-</td><td></td></tr><tr><td>Yeast Extract</td><td>OXID</td><td>-</td><td></td></tr><tr><td>&lt;strong&gt;Primers and Sequence&lt;/strong&gt;</td><td>&lt;strong&gt;Company&lt;/strong&gt;</td><td></td><td></td></tr><tr><td>&lt;strong&gt;Primer&lt;/strong&gt;: AQP5&lt;br/&gt; &lt;strong&gt;Sequence&lt;/strong&gt;:&lt;br/&gt; F: CATGAACCCAGCCCGATCTT&lt;br/&gt; R: CTTCTGCTCCCATCCCATCC</td><td>Synbio Tech</td><td></td><td></td></tr><tr><td>&lt;strong&gt;Primer&lt;/strong&gt;: &amp;beta;-actin&lt;br/&gt; &lt;strong&gt;Sequence&lt;/strong&gt;:&lt;br/&gt; F: AGATCAAGATCATTGCTCCTCCT&lt;br/&gt; R: AGATCAAGATCATTGCTCCTCCT</td><td>Synbio Tech</td><td></td><td></td></tr><tr><td>&lt;strong&gt;Primer&lt;/strong&gt;: Epcam&lt;br/&gt; &lt;strong&gt;Sequence&lt;/strong&gt;:&lt;br/&gt; F: CATTTGCTCCAAACTGGCGT&lt;br/&gt; R: TGTCCTTGTCGGTTCTTCGG</td><td>Synbio Tech</td><td></td><td></td></tr><tr><td>&lt;strong&gt;Primer&lt;/strong&gt;: Krt5&lt;br/&gt; &lt;strong&gt;Sequence&lt;/strong&gt;:&lt;br/&gt; F: AGCAATGGCGTTCTGGAGG&lt;br/&gt; R: GCTGAAGGTCAGGTAGAGCC</td><td>Synbio Tech</td><td></td><td></td></tr><tr><td>&lt;strong&gt;Primer&lt;/strong&gt;: Krt14&lt;br/&gt; &lt;strong&gt;Sequence&lt;/strong&gt;:&lt;br/&gt; F: CGGACCAAGTTTGAGACGGA&lt;br/&gt; R: GCCACCTCCTCGTGGTTC</td><td>Synbio Tech</td><td></td><td></td></tr><tr><td>&lt;strong&gt;Primer&lt;/strong&gt;: Krt19&lt;br/&gt; &lt;strong&gt;Sequence&lt;/strong&gt;:&lt;br/&gt; F: TCTTTGAAAAACACTGAACCCTG&lt;br/&gt; R: TGGCTCCTCAGGGCAGTAAT</td><td>Synbio Tech</td><td></td><td></td></tr><tr><td>&lt;strong&gt;Primer&lt;/strong&gt;: Ltf&lt;br/&gt; &lt;strong&gt;Sequence&lt;/strong&gt;:&lt;br/&gt; F: CACATGCTGTCGTATCCCGA&lt;br/&gt; R: CGATGCCCTGATGGACGA</td><td>Synbio Tech</td><td></td><td></td></tr><tr><td>&lt;strong&gt;Primer&lt;/strong&gt;: Nestin&lt;br/&gt; &lt;strong&gt;Sequence&lt;/strong&gt;:&lt;br/&gt; F: GGGGCTACAGGAGTGGAAAC&lt;br/&gt; R: GACCTCTAGGGTTCCCGTCT</td><td>Synbio Tech</td><td></td><td></td></tr><tr><td>&lt;strong&gt;Primer&lt;/strong&gt;: P63&lt;br/&gt; &lt;strong&gt;Sequence&lt;/strong&gt;:&lt;br/&gt; F: TCCTATCACGGGAAGGCAGA&lt;br/&gt; R: GTACCATCGCCGTTCTTTGC</td><td>Synbio Tech</td><td></td><td></td></tr><tr><td>&lt;u&gt;&lt;em&gt;Vector&lt;/em&gt;&lt;/u&gt;</td><td></td><td></td><td></td></tr><tr><td>pLX302 lentivirus no-load vector</td><td>Addgene</td><td></td><td></td></tr><tr><td>pENRTY-mCherry</td><td>Xiaofeng Qin laboratory, Sun Yat-sen University</td><td></td><td></td></tr></tbody></table>

three-dimensional, serum-free culture system for lacrimal gland stem cells

Three-Dimensional, Serum-Free Culture System for Lacrimal Gland Stem Cells

Lacrimal gland (LG) stem cell-based therapy is a promising strategy for lacrimal gland diseases. However, the lack of a reliable, serum-free culture method to obtain a sufficient number of LG stem cells (LGSCs) is one obstacle for further research and application. The three-dimensional (3D), serum-free culture method for adult mouse LGSCs is well established and shown here. The LGSCs could be continuously passaged and induced to differentiate to acinar or ductal-like cells.
For the LGSC primary culture, the LGs from 6-8-week-old mice were digested with dispase, collagenase I, and trypsin-EDTA. A total of 1 &#215; 104 single cells were seeded into 80 &#181;L of matrix gel-lacrimal gland stem cell medium (LGSCM) matrix in each well of a 24-well plate, precoated with 20 &#181;L of matrix gel-LGSCM matrix. The mix was solidified after incubation for 20 min at 37 &#176;C, and 600 &#181;L of LGSCM added.
For LGSC maintenance, LGSCs cultured for 7 days were disaggregated into single cells by dispase and trypsin-EDTA. The single cells were implanted and cultured according to the method used in the LGSC primary culture. LGSCs could be passaged over 40 times and continuously express stem/progenitor cell markers Krt14, Krt5, P63, and nestin. LGSCs cultured in LGSCM have self-renewal capacity and can differentiate into acinar or ductal-like cells in vitro and in vivo.

Establish 3D, serum-free culture system 
In this study, LGSCM containing EGF, Wnt3A, FGF10, and Y-27632 for mouse LGSCs was developed, and LGSCs were successfully isolated and cultured by a 3D culture method (Figure 1A). A successful 3D, serum-free culture system of LGSCs from C57BL/6 mice, NOD/ShiLtJ mice, BALB/c mice, and ROSA26mT/mG mice has been established using this method16. For a male mouse, 1.5-2 × 106 cells were obta...

The three-dimensional, serum-free culture method for adult lacrimal gland (LG) stem cells is well established for the induction of LG organoid formation and differentiation into acinar or ductal-like cells.

Lacrimal gland (LG) stem cell-based therapy is a promising strategy for lacrimal gland diseases. However, the lack of a reliable, serum-free culture ...

three-dimensional-serum-free-culture-system-for-lacrimal-gland-stem

Research

JoVE Journal

Biology

The lacrimal gland (LG) is a branching organ that produces the aqueous components of tears necessary for maintaining vision and ocular health. Here we describe murine LG dissection and ex vivo culture techniques to decipher signaling pathways involved in LG development.

Manipulating the Murine Lacrimal Gland

This protocol introduces a simple two-step method for differentiating corneal limbal epithelial stem cells from human pluripotent stem cells under xeno- and feeder cell-free culture conditions. The cell culture methods presented here enable cost-efficient, large-scale production of clinical quality cells applicable to corneal cell therapy use.

Efficient and Scalable Directed Differentiation of Clinically Compatible Corneal Limbal Epithelial Stem Cells from Human Pluripotent Stem Cells

The lacrimal gland (LG) has two cell types expressing α-smooth muscle actin (αSMA): myoepithelial cells (MECs) and pericytes. MECs are of ectodermal origin, found in many glandular tissues, while pericytes are vascular smooth muscle cells of endodermal origin. This protocol isolates MECs and pericytes from murine LGs.

Isolation of Myoepithelial Cells from Adult Murine Lacrimal and Submandibular Glands

This protocol describes an approach to produce hepatospheres from human pluripotent stem cells using a defined culture system and cell self-assembly. This protocol is reproducible in a number of cell lines, cost effective and allows the production of stable human hepatospheres for biomedical application.

Serum Free Production of Three-dimensional Human Hepatospheres from Pluripotent Stem Cells

This protocol describes how to establish, maintain, genetically modify, differentiate, functionally characterize, and transplant lacrimal gland organoids derived from primary mouse and human tissue.

Establishment, Maintenance, Differentiation, Genetic Manipulation, and Transplantation of Mouse and Human Lacrimal Gland Organoids

Here, we present a protocol to isolate and identify the human limbal niche cells.

Isolation and Identification of Limbal Niche Cells

Here, we present a protocol demonstrating the use of hydrogel as a three-dimensional (3D) cell culture framework for adipose-derived stem cell (ADSC) culture and introducing photobiomodulation (PBM) to enhance the proliferation of ADSCs within the 3D culture setting.

Three&#45;Dimensional Cell Culture of Adipose-Derived Stem Cells in a Hydrogel with Photobiomodulation Augmentation

This protocol describes an optimized method for dissociating aged mouse lacrimal glands to obtain viable single cells for single-cell RNA sequencing. Sequential enzymatic digestion and gentle handling preserve cell integrity, yielding high-quality suspensions suitable for cell-type-specific isolation and transcriptomic analysis of aging-associated changes in lacrimal gland populations.

Protocol for Single-Cell Dissociation, RNA Sequencing, and Isolation of Myoepithelial Cells and Fibroblasts from the Aged Lacrimal and Salivary Glands

We describe a chip-based platform for the three-dimensional cultivation of cells in micro-bioreactors. One chip can house up to 10 Mio. cells that can be cultivated under precisely defined conditions with regard to fluid flow, oxygen tension etc. in a sterile, closed circulation loop.

Chip-based Three-dimensional Cell Culture in Perfused Micro-bioreactors

Human platelet lysate is a rich source of growth factors and a potent supplement in cell culture. This protocol presents the process of preparing a large pool of human platelet lysate by starting from platelet rich plasma, performing several freeze-thaw cycles and depleting the platelet fragments.

Preparation of Pooled Human Platelet Lysate (pHPL) as an Efficient Supplement for Animal Serum-Free Human Stem Cell Cultures

Learn a serum-free culture method for lacrimal gland stem cells using BALB/c mice. This protocol enables long-term expansion and differentiation into acinar and ductal-like cells for tissue regeneration.

Three-Dimensional, Serum-Free Culture System for Lacrimal Gland Stem Cells

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