Gwyneth Paltrow, Matt Damon and other stars team up for cancer telethon

Gwyneth Paltrow attends the screening of "End of Watch" on Aug. 19, 2012, in East Hampton, N.Y.

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(CBS/AP) An A-list cast of celebrities is joining a telethon to raise money and awareness to fight cancer.

Gwyneth Paltrow, Julia Roberts, Matt Damon, Samuel L. Jackson and Emma Stone are among the stars participating in the third Stand Up to Cancer telethon, the organization announced Wednesday.

Pictures: Gwyneth Paltrow

Others taking part include Jessica Biel, Katie Couric, Jeremy Renner, Seth Rogan, Masi Oka, Simon Baker and Rashida Jones.

Paltrow also is an executive producer for the fundraiser that will be carried commercial-free from 8-9 p.m. EDT Sept. 7 on the four major broadcast networks, CBS, ABC, Fox and NBC, and more than a dozen cable channels.

Musical performances by Taylor Swift, Coldplay, Alicia Keys and Tim McGraw are planned, and more than 25 movie, TV and sports stars will be on hand to take phone pledges, said executive producer Joel Gallen.

Laura Ziskin, founder of Stand Up to Cancer and producer of its first two telethons in 2008 and 2010, lost her seven-year fight against breast cancer last year. The "Spider-Man" movie producer was 61.

Ziskin represents "tremendous shoes to fill," Gallen said. "I can't really replace Laura, but I'm coming from a different point of view, from a respectful point of view, and continuing the mission she was on."

The experiences of several patients who are part of Stand Up to Cancer trials will be explored in mini-documentaries that show the progress made in just a few years of effort, Gallen said.

The organization said it has awarded about $120 million in grant commitments to multidisciplinary research "Dream Teams" and to scientists seeking innovative approaches to end cancer's role as the world's leading cause of death.

Cable channels carrying the telethon are BIO, Encore, HBO, Showtime, HBO Latino, ION Television, LMN, Logo, MLB Network, mun2, Palladia, Starz, TBS, Smithsonian and VH1.