Generating Anti-Angiogenic Tumor-Associated Neutrophils

Abstract

Source: Pylaeva, E., et al. Transfer of Manipulated Tumor-associated Neutrophils into Tumor-Bearing Mice to Study their Angiogenic Potential In Vivo. J. Vis. Exp. (2019).

This video demonstrates an assay to generate anti-angiogenic tumor-associated neutrophils (TANs). Upon taking a murine melanoma tumor containing pro-angiogenic TANs, the single cells are isolated using fluorescence-activated cell sorting (FACS) and treated with an inhibitor of nicotinamide phosphoribosyl transferase (NAMPT) to reduce the capacity to stimulate angiogenesis.

Protocol

All procedures involving sample collection have been performed in accordance with the institute's IRB guidelines.

NOTE: The overall scheme of the protocol is shown in the Figure 1.

1. Preparation of B16F10 melanoma cell line

1. Prepare mycoplasma-negative cells grown to a 90% confluent monolayer (approximately 10 x 10⁶ cells/T75 flask) in complete Iscove's Modified Dulbecco's Medium (IMDMc: IMDM + 10% Fetal Bovine Serum (FBS) + 1% penicillin-streptomycin).
2. Remove the medium, and rinse the cells with phosphate buffered saline (PBS). A....

Results

Figure 1. The scheme of the protocol. Step 1. Preparation of B16F10 melanoma cell line; 2. Allogenic tumor model in mice; 3. Isolation of TANs from the tumors; 4. Inhibition of NAMPT in TANs in vitro; 5. Estimation of angiogenic properties of TANs in the ao.......

Materials

List of materials used in this article

Name	Company	Catalog Number	Comments
15 ml tubes	Sarstedt AG & Co., Nümbrecht, Germany	6,25,54,502
50 ml tubes	Cellstar, Greiner Bio One International GmbH, Frickenhausen, Germany	227261
5ml / 10ml / 25ml sterile tipps for the automatic pipette	Cellstar, Greiner Bio One International GmbH, Frickenhausen, Germany	6006180 / 607180 / 760180
6 well flat-bottom cell culture plates	Sarstedt AG & Co., Nümbrecht, Germany	8,33,920
96 well flat-bottom cell culture plates	Cellstar, Greiner Bio One International GmbH, Frickenhausen, Germany	655180
96 well U-bottom cell culture plates	Cellstar, Greiner Bio One International GmbH, Frickenhausen, Germany	65018
anti-mouse CD11b	BD Pharmigen, Becton Dickinson, Franklin Lakes, U.S.	553312	clone M1/70, APC-conjugated, 0.2mg/mL
anti-mouse Ly6G	BioLegend, California, U.S.	127608	clone 1A8, PE-conjugated, 0.2mg/mL
BD FACS AriaII	BD Biosciences, Becton Dickinson, Franklin Lakes, U.S.		cell sorter
Caliper	Vogel Germany, Kevelaer, Germany
Casy cell counter	Innovatis, Roche Innovatis AG, Bielefeld, Germany
Cell Trics 50µm / 100 µm sterile filters	Sysmex Partec GmbH, Goerlitz, Germany	04-004-2327 / 04-004-2328
Centrifuge Rotina 420 R	Andreas Hettich, Tuttlingen, Germany	4706
Collagenase D	Sigma-Aldrich/Merck, Darmstadt, Germany	11088858001
DAPI (4',6-Diamidino-2-Phenylindole, Dilactate)	BioLegend, California, U.S.	422801	Stock: 5mg/ml
Dispase I	Sigma-Aldrich/Merck, Darmstadt, Germany	D4818-2MG
DMEM	Gibco, Life Technologies/Thermo Fisher Scientific, Massachusetts, U.S.	41966-029	DMEM complete: DMEM + 10% FBS + 1% penicillin-streptomycin
DMSO (Dimethylsufoxide)	WAK-Chemie Medical GmbH, Steinbach, Germany	WAK-DMSO-10	CryoSure-DMSO
DNase I	Sigma-Aldrich/Merck, Darmstadt, Germany	DN25-100MG
DPBS	Gibco, Life Technologies/Thermo Fisher Scientific, Massachusetts, U.S.	14190-094
Endothelial cell growth medium	PromoCell, Heidelberg, Germany	c-22010
FBS (Fetal Bovine Serum)	Biochrom, Berlin, Germany	S0115
Fc-block (Anti-mouse CD16/32)	BD Pharmingen, Becton Dickinson,Becton Dickinson, Franklin Lakes, U.S.	553142	clone 2.4G2, Stock: 0.5mg/mL
FK 866 hydrochloride	Axon Medchem, Groningen, Netherlands	Axon 1546	Stock: 100 mM
Goat Anti-Rabbit IgG H&L	Abcam, Cambridge, U.K.	ab97075	Cy3-conjugated, Stock: 0.5 mg/mL
Heracell 240i CO2 Incubator	Thermo Fisher Scientific, Waltham, U.S.	51026334
IMDM	Gibco, Life Technologies/Thermo Fisher Scientific, Massachusetts, U.S.	12440-053	IMDM complete: IMDM + 10% FBS + 1% penicillin-streptomycin
Isis GT420 shaver	B. Braun Asculap, Suhl, Germany	90200714
Matrigel Matrix basement membrane	Corning Life Sciences, Amsterdam, Netherlands	7205011
Monoclonal Anti-Actin, α-Smooth Muscle	Sigma-Aldrich/Merck, Darmstadt, Germany	F3777	FITC-conjugated, no information about stock concentration
Needles 0.4 mm x 16 mm	BD Microlance, Becton Dicson, Becton Dickinson, Franklin Lakes, U.S.	302200
Neomount	Merck, Darmstadt, Germany	HX67590916
Normal goat serum	Jackson ImmunoResearch Laboratories, West Grove, U.S.	005-000-121
Penicillin Streptomycin	Gibco, Life Technologies/Thermo Fisher Scientific, Massachusetts, U.S.	15140-122
Pipetus automatic pipette	Hirschmann Laborgeräte, Eberstadt, Germany	9907200
ProLong Gold Antifade Mountant with DAPI	Invitrogen, Thermo Fisher Scientific, Massachusetts, U.S.	P36935
rabbit anti mouse Laminin gamma 1 chain	Immundiagnostik, Bensheim, Germany	AP1001.1	No information about stock concentration
StemPro Accutase	Gibco, Life Technologies/Thermo Fisher Scientific, Massachusetts, U.S.	A1105-01
Sterile disposal scalpel (no. 15)	MedWare, Naples, U.S.	120920
Syringes 1 ml	BD Plastipak, Becton Dickinson, Franklin Lakes, U.S.	303172
Syringes 10 ml	BD Discardit II, Becton Dickinson, Franklin Lakes, U.S.	309110
T75 sterile cell culture flasks	Sarstedt AG & Co., Nümbrecht, Germany	83,39,11,302