I doubt whether NCCS, Pune will have 4T1 cell line. As far as I know, NCCS cell repository primarily serves as a resource for cell lines developed or modified by researchers within India. This includes cell lines that have undergone quality control and are secured, maintained, and supplied to researchers as per demand. 4T1 cell line is a commonly used cell line and it is typically sourced from commercial providers like ATCC.
For 4T1 cell line, you may want to refer to the below post.