React Components on the Server

I've been playing around with React for a while now but still can't wrap my head around on how to integrate it with an existing node/express/handlebars app.

For example, if I had a feed component which required json data to be fetched from AWS - how do I handle this.

var VideoFeed = require('./component/VideoFeed');

app.use('/', function(res, req) { 
    DataService.getVideoFeed().then(function(data) {
        res.render('home', {videoComponent: React.renderToString(<VideoFeed feed={data} />);
    });
});

Home

<!DOCTYPE html>
<body>
    Some sample text.  Here's the Video Feed
    {{videoComponent}}
</body>
</html>